阅读说明：本技术 一种基于lng冷能利用技术的数据机房综合能源管理系统 (Data computer lab comprehensive energy management system based on LNG cold energy utilization technique ) 是由 王瑜 吴露露 成峰 向滕 鲍俊 许鑫洁 于 2019-10-25 设计创作，主要内容包括：一种基于LNG冷能利用技术的数据机房综合能源管理系统,属于数据中心环境控制领域。本发明充分利用LNG冷能为机柜提供冷量,解决了LNG冷能浪费和数据机房制冷成本高的问题。主要部件包括LNG储存罐,分水器,进水泵,进水截止阀,二级进水泵,排水泵,R404换热器,乙二醇换热器,冷媒储存罐,蓄冷池,发电机,LNG气化器,蓄电池。本发明将LNG冷能直接利用和储存备用相结合,R404和乙二醇两种冷媒用于机柜散热,冷媒在数据机房机柜中释放冷能,散热完成后通过管道流入换热器或蓄冷池冷却,同时利用LNG冷能发电,保障数据机房电力系统供应的稳定。(A comprehensive energy management system of a data machine room based on an LNG cold energy utilization technology belongs to the field of data center environment control. The invention fully utilizes the LNG cold energy to provide cold energy for the cabinet, and solves the problems of LNG cold energy waste and high refrigeration cost of the data machine room. The main components include an LNG storage tank, a water separator, a water inlet pump, a water inlet stop valve, a secondary water inlet pump, a drainage pump, an R404 heat exchanger, a glycol heat exchanger, a refrigerant storage tank, a cold storage tank, a generator, an LNG gasifier and a storage battery. The LNG cold energy is directly utilized and stored for standby, two refrigerants, namely R404 and ethylene glycol, are used for heat dissipation of the cabinet, the refrigerants release cold energy in the cabinet of the data machine room, flow into the heat exchanger or the cold storage pool for cooling through the pipeline after heat dissipation is finished, and meanwhile, the LNG cold energy is utilized for power generation, so that the stability of the power supply of the data machine room power system is guaranteed.)

1. The utility model provides a data computer lab comprehensive energy management system based on LNG cold energy utilizes technique which characterized in that:

the LNG storage tank is composed of an LNG storage tank (1), a water inlet pump (2), a water inlet stop valve (3), a first water divider (4), a first branch heat exchanger (5), a first branch R404a storage tank (6), a first branch first water inlet pump (7), a first branch first water inlet stop valve (8), a second three-way valve (9), a second water divider (10), a first cabinet first water inlet pump (11), a first cabinet water inlet stop valve (12), a first cabinet first secondary water pump (13), a first cabinet first branch water inlet stop valve (14), a first cabinet first branch heat exchanger (15), a first cabinet first branch server (16), a first cabinet first tertiary drainage pump (17), a first cabinet first branch drainage stop valve (18), a first cabinet second secondary water inlet pump (19), a first cabinet second branch water inlet stop valve (20), a first cabinet second branch heat exchanger (21), A first cabinet second branch server (22), a first cabinet second third-level drainage pump (23), a first cabinet second branch drainage stop valve (24), a first cabinet third second-level inlet pump (25), a first cabinet third-branch inlet stop valve (26), a first cabinet third-branch heat exchanger (27), a first cabinet third-branch server (28), a first cabinet third-level drainage pump (29), a first cabinet third-branch drainage stop valve (30), a second three-way valve (31), a first branch first drainage stop valve (32), a first branch first drainage pump (33), a water collector (34), a second cabinet first inlet pump (35), a second cabinet inlet stop valve (36), a second cabinet first secondary water pump (37), a second cabinet first branch inlet stop valve (38), a second cabinet first branch heat exchanger (39), A second cabinet first branch server (40), a second cabinet first third-level drainage pump (41), a second cabinet first branch drainage stop valve (42), a second cabinet second-level inlet pump (43), a second cabinet second branch inlet stop valve (44), a second cabinet second branch heat exchanger (45), a second cabinet second branch server (46), a second cabinet second third-level drainage pump (47), a second cabinet second branch drainage stop valve (48), a second cabinet third-level inlet pump (49), a second cabinet third branch inlet stop valve (50), a second cabinet third branch heat exchanger (51), a second cabinet third branch server (52), a second cabinet third-level drainage pump (53), a second cabinet third branch drainage stop valve (54), a third cabinet first inlet pump (55), a third cabinet inlet stop valve (56), A third cabinet first secondary water pump (57), a third cabinet first branch water inlet stop valve (58), a third cabinet first branch heat exchanger (59), a third cabinet first branch server (60), a third cabinet first tertiary water discharge pump (61), a third cabinet first branch water discharge stop valve (62), a third cabinet second secondary water inlet pump (63), a third cabinet second branch water inlet stop valve (64), a third cabinet second branch heat exchanger (65), a third cabinet second branch server (66), a third cabinet second tertiary water discharge pump (67), a third cabinet second branch water discharge stop valve (68), a third cabinet third secondary water inlet pump (69), a third cabinet third branch water inlet stop valve (70), a third cabinet third branch heat exchanger (71), a third cabinet third branch server (72), a third cabinet tertiary water discharge pump (73), A third cabinet third branch water drainage stop valve (74), a first branch second water drainage stop valve (75), a first branch second water drainage stop valve (76), a first branch third water drainage stop valve (77), a first branch third water drainage stop valve (78), a second branch first water inlet pump (79), a second branch first water inlet stop valve (80), a second branch heat exchanger (81), a second branch R404a storage tank (82), a second branch second water inlet pump (83), a second branch second water inlet stop valve (84), a second branch first water drainage stop valve (85), a second branch first water drainage pump (86), an ice storage tank (87), a second branch second water drainage stop valve (88), a second branch second water drainage pump (89), a second branch third water drainage stop valve (90), a second branch third water drainage stop valve (91), a third branch water inlet pump (92), a third branch stop valve (93), The system comprises a first gasifier (94), a generator (95), a storage battery (96), a third branch water discharge pump (97), a third branch water discharge stop valve (98), a second branch fourth water discharge stop valve (99), a second branch fourth water discharge pump (100), a first cabinet (101), a second cabinet (102), a third cabinet (103), a third three-way valve (104), a second gasifier (105), an urban pipe network interface (106), a first branch second R404a storage tank (107), a first branch second water inlet pump (108) and a first branch second water inlet stop valve (109);

the system comprises a first cabinet first secondary water pump (13), a first cabinet first branch water inlet stop valve (14), a first cabinet first branch heat exchanger (15), a first cabinet first branch server (16), a first cabinet first tertiary drainage pump (17), a first cabinet first branch drainage stop valve (18), a first cabinet second secondary water inlet pump (19), a first cabinet second branch water inlet stop valve (20), a first cabinet second branch heat exchanger (21), a first cabinet second branch server (22), a first cabinet second tertiary drainage pump (23), a first cabinet second branch drainage stop valve (24), a first cabinet third secondary water inlet pump (25), a first cabinet third branch water inlet stop valve (26), a first cabinet third branch heat exchanger (27), a first cabinet third branch server (28), a first cabinet third tertiary drainage pump (29), The third branch drainage stop valve (30) of the first cabinet is positioned in the first cabinet (101);

a second cabinet first secondary water pump (37), a second cabinet first branch water inlet stop valve (38), a second cabinet first branch heat exchanger (39), a second cabinet first branch server (40), a second cabinet first tertiary water discharge pump (41), a second cabinet first branch water discharge stop valve (42), a second cabinet second secondary water inlet pump (43), a second cabinet second branch water inlet stop valve (44), a second cabinet second branch heat exchanger (45), a second cabinet second branch server (46), a second cabinet second tertiary water discharge pump (47), a second cabinet second branch water discharge stop valve (48), a second cabinet third secondary water inlet pump (49), a second cabinet third branch water inlet stop valve (50), a second cabinet third branch heat exchanger (51), a second cabinet third branch server (52), a second cabinet third tertiary water discharge pump (53), The third branch drainage stop valve (54) of the second cabinet is positioned in the second cabinet (102);

a third cabinet first secondary water pump (57), a third cabinet first branch water inlet stop valve (58), a third cabinet first branch heat exchanger (59), a third cabinet first branch server (60), a third cabinet first tertiary water discharge pump (61), a third cabinet first branch water discharge stop valve (62), a third cabinet second secondary water inlet pump (63), a third cabinet second branch water inlet stop valve (64), a third cabinet second branch heat exchanger (65), a third cabinet second branch server (66), a third cabinet second tertiary water discharge pump (67), a third cabinet second branch water discharge stop valve (68), a third cabinet third secondary water inlet pump (69), a third cabinet third branch water inlet stop valve (70), a third cabinet third branch heat exchanger (71), a third cabinet third branch server (72), a third cabinet tertiary water discharge pump (73), The third branch drainage stop valve (74) of the third cabinet is positioned inside the third cabinet (103);

the first three-way valve (9) is provided with two inlets and an outlet, and the two inlets respectively correspond to the outlets of the first branch heat exchanger (5) and the second branch fourth drainage stop valve (99); the first machine cabinet first water inlet pump (11) is provided with an inlet and three outlets, and the three outlets respectively correspond to the first machine cabinet first secondary water inlet pump (13), the first machine cabinet second secondary water inlet pump (19) and the first machine cabinet third secondary water inlet pump (25); the second three-way valve (31) is provided with nine inlets and two outlets, the two outlets are respectively corresponding to the inlet of the first branch first drainage stop valve (32) and the inlet of the first branch second drainage pump (75), and the nine inlets are respectively corresponding to the first cabinet first branch drainage stop valve (18), the first cabinet second branch drainage stop valve (24), the first cabinet third branch drainage stop valve (30), the second cabinet first branch drainage stop valve (42), the second cabinet second branch drainage stop valve (48), the second cabinet third branch drainage stop valve (54), the third cabinet first branch drainage stop valve (62), the third cabinet second branch drainage stop valve (68) and the third cabinet third branch drainage stop valve (74); the first water inlet pump (35) of the second cabinet is provided with an inlet and three outlets, and the three outlets respectively correspond to a first secondary water inlet pump (37) of the second cabinet, a second secondary water inlet pump (43) of the second cabinet and a third secondary water inlet pump (49) of the second cabinet; the first water inlet pump (55) of the third cabinet is provided with an inlet and three outlets, and the three outlets respectively correspond to the first secondary water inlet pump (57) of the third cabinet, the second secondary water inlet pump (63) of the third cabinet and the third secondary water inlet pump (69) of the third cabinet; the third three-way valve (104) is provided with two inlets and an outlet, and the two inlets respectively correspond to the second branch third drainage stop valve (91) and the first branch third drainage stop valve (78);

a first outlet of the LNG storage tank (1) is connected with an inlet of a water inlet pump (2), an outlet of the water inlet pump (2) is connected with an inlet of a water inlet stop valve (3), the water inlet stop valve (3) is connected with an inlet of a first water distributor (4), a first outlet of the first water distributor (4) is connected with an inlet of a first branch heat exchanger (5), an outlet of a first branch R404a storage tank (6) is connected with an inlet of a first branch first water inlet pump (7), an outlet of the first branch first water inlet pump (7) is connected with an inlet of a first branch first water inlet stop valve (8), an outlet of the first branch first water inlet stop valve (8) is connected with an inlet of the first branch heat exchanger (5), a first outlet of the first branch heat exchanger (5) is connected with a first inlet of a first three-way valve (9), and a first outlet of the first three-way valve (9) is connected with an inlet of a second water distributor (10);

a first outlet of the second water separator (10) is connected with an inlet of a first machine cabinet first water inlet pump (11), an outlet of the first machine cabinet first water inlet pump (11) is connected with an inlet of a first machine cabinet water inlet stop valve (12), a first outlet of the first machine cabinet water inlet stop valve (12) is connected with an inlet of a first machine cabinet first secondary water pump (13), an outlet of the first machine cabinet first secondary water pump (13) is connected with an inlet of a first machine cabinet first branch water inlet stop valve (14), an outlet of the first machine cabinet first branch water inlet stop valve (14) is connected with an inlet of a first machine cabinet first branch heat exchanger (15), an outlet of the first machine cabinet first branch heat exchanger (15) is connected with an inlet of a first machine cabinet third-level drainage pump (17), and an outlet of the first machine cabinet first third-level drainage pump (17) is connected with an inlet of the first machine cabinet first branch drainage stop valve (18); an outlet of the first machine cabinet branch drainage stop valve (18) is connected with an inlet of a second three-way valve (31), a first outlet of the second three-way valve (31) is connected with an inlet of a first branch first drainage stop valve (32), an outlet of the first branch first drainage stop valve (32) is connected with an inlet of a first branch first drainage pump (33), an outlet of the first branch first drainage pump (33) is connected with an inlet of a water collector (34), and an outlet of the water collector (34) is connected with a first branch heat exchanger (5);

the second outlet of the first cabinet water inlet stop valve (12) is connected with the inlet of a first cabinet second secondary water inlet pump (19), the outlet of the first cabinet second secondary water inlet pump (19) is connected with the inlet of a first cabinet second branch water inlet stop valve (20), the outlet of the first cabinet second branch water inlet stop valve (20) is connected with the inlet of a first cabinet second branch heat exchanger (21), the outlet of the first cabinet second branch heat exchanger (21) is connected with the inlet of a first cabinet second tertiary drainage pump (23), and the outlet of the first cabinet second tertiary drainage pump (23) is connected with the inlet of a first cabinet second branch drainage stop valve (24); the outlet of the second branch drainage stop valve (24) of the first cabinet is connected with the inlet of a second three-way valve (31);

a third outlet of the first cabinet water inlet stop valve (12) is connected with an inlet of a first cabinet third secondary water inlet pump (25), an outlet of the first cabinet third secondary water inlet pump (25) is connected with an inlet of a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) is connected with an inlet of a first cabinet third branch heat exchanger (27), an outlet of the first cabinet third branch heat exchanger (27) is connected with an inlet of a first cabinet third-level drainage pump (29), and an outlet of the first cabinet third-level drainage pump (29) is connected with an inlet of a first cabinet third branch drainage stop valve (30); the outlet of the second branch drainage stop valve (27) of the first cabinet is connected with the inlet of a second three-way valve (31);

a second outlet of the second water separator (10) is connected with an inlet of a first water inlet pump (35) of a second cabinet, an outlet of the first water inlet pump (35) of the second cabinet is connected with an inlet of a water inlet stop valve (36) of the second cabinet, a first outlet of the water inlet stop valve (36) of the second cabinet is connected with an inlet of a first secondary water pump (37) of the second cabinet, an outlet of the first secondary water pump (37) of the second cabinet is connected with an inlet of a first branch water inlet stop valve (38) of the second cabinet, an outlet of the first branch water inlet stop valve (38) of the second cabinet is connected with an inlet of a first branch heat exchanger (39) of the second cabinet, an outlet of the first branch heat exchanger (39) of the second cabinet is connected with an inlet of a third-level drain pump (41) of the second cabinet, and an outlet of the first-level drain pump (41) of the second cabinet is connected with an inlet of a first branch drain stop valve (42) of the second; the outlet of the first branch drainage stop valve (42) of the second cabinet is connected with the inlet of a second three-way valve (31);

a second outlet of the second cabinet water inlet stop valve (36) is connected with an inlet of a second cabinet second secondary water inlet pump (43), an outlet of the second cabinet second secondary water inlet pump (43) is connected with an inlet of a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) is connected with an inlet of a second cabinet second branch heat exchanger (45), an outlet of the second cabinet second branch heat exchanger (45) is connected with an inlet of a second cabinet second tertiary drainage pump (47), and an outlet of the second cabinet second tertiary drainage pump (47) is connected with an inlet of the second cabinet second branch drainage stop valve (44); the outlet of a second branch drainage stop valve (44) of the second cabinet is connected with the inlet of a second three-way valve (31);

a third outlet of the second cabinet water inlet stop valve (36) is connected with an inlet of a second cabinet third secondary water inlet pump (49), an outlet of the second cabinet third secondary water inlet pump (49) is connected with an inlet of a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) is connected with an inlet of a second cabinet third branch heat exchanger (51), an outlet of the second cabinet third branch heat exchanger (51) is connected with an inlet of a second cabinet third-level drainage pump (53), and an outlet of the second cabinet third-level drainage pump (53) is connected with an inlet of a second cabinet third branch drainage stop valve (54); an outlet of a third branch drainage stop valve (54) of the second cabinet is connected with an inlet of a second three-way valve (31);

a third outlet of the second water separator (10) is connected with an inlet of a first water inlet pump (55) of a third cabinet, an outlet of the first water inlet pump (55) of the third cabinet is connected with an inlet of a water inlet stop valve (56) of the third cabinet, a first outlet of the water inlet stop valve (56) of the third cabinet is connected with an inlet of a first secondary water pump (57) of the third cabinet, an outlet of the first secondary water pump (57) of the third cabinet is connected with an inlet of a first branch water inlet stop valve (58) of the third cabinet, an outlet of the first branch water inlet stop valve (58) of the third cabinet is connected with an inlet of a first branch heat exchanger (59) of the third cabinet, an outlet of the first branch heat exchanger (59) of the third cabinet is connected with an inlet of a third level drain pump (61) of the third cabinet, and an outlet of the first level drain pump (61) of the third cabinet is connected with an inlet of a first branch drain stop valve (62) of the third cabinet; the outlet of the first branch drainage stop valve (62) of the third cabinet is connected with the inlet of a second three-way valve (31);

a second outlet of the third cabinet water inlet stop valve (56) is connected with an inlet of a second secondary water inlet pump (63) of the third cabinet, an outlet of the second secondary water inlet pump (63) of the third cabinet is connected with an inlet of a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet is connected with an inlet of a second branch heat exchanger (65) of the third cabinet, an outlet of the second branch heat exchanger (65) of the third cabinet is connected with an inlet of a second tertiary drain pump (67) of the third cabinet, and an outlet of the second tertiary drain pump (67) of the third cabinet is connected with an inlet of a second branch drain stop valve (68) of the third cabinet; the outlet of the second branch drainage stop valve (68) of the third cabinet is connected with the inlet of a second three-way valve (31);

a third outlet of the third cabinet water inlet stop valve (56) is connected with an inlet of a third cabinet third secondary water inlet pump (69), an outlet of the third cabinet third secondary water inlet pump (69) is connected with an inlet of a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) is connected with an inlet of a third cabinet third branch heat exchanger (71), an outlet of the third cabinet third branch heat exchanger (71) is connected with an inlet of a third cabinet third-level drainage pump (73), and an outlet of the third cabinet third-level drainage pump (73) is connected with an inlet of a third cabinet third branch drainage stop valve (74); the outlet of a third branch drainage stop valve (74) of the third cabinet is connected with the inlet of a second three-way valve (31);

a first outlet of a second three-way valve (31) is connected with an inlet of a first branch first drainage stop valve (32), a second outlet of the second three-way valve (31) is connected with an inlet of a first branch second drainage valve (75), an outlet of the first branch second drainage valve (75) is connected with an inlet of a first branch second drainage stop valve (76), an outlet of the first branch second drainage stop valve (76) is connected with an inlet of a first branch second R404a storage tank (107), an outlet of the first branch second R404a storage tank (107) is connected with an inlet of a first branch second water inlet pump (108), an outlet of the first branch second water inlet pump (108) is connected with an inlet of a first branch second water inlet stop valve (109), and an outlet of the first branch second water inlet stop valve (109) is connected with an inlet of an ice storage pool (87);

the second outlet of the first water separator (4) is connected with the inlet of a second branch first water inlet pump (79), the outlet of the second branch first water inlet pump (79) is connected with the inlet of a second branch first water inlet stop valve (80), the outlet of the second branch first water inlet stop valve (80) is connected with the inlet of a second branch heat exchanger (81), the outlet of a second branch R404a storage tank (82) is connected with the inlet of a second branch second water inlet pump (83), the outlet of the second water inlet pump (83) is connected with the inlet of a second branch second water inlet stop valve (84), the outlet of the second branch second water inlet stop valve (84) is connected with the inlet of the second branch heat exchanger (81), the first outlet of the second branch heat exchanger (81) is connected with the inlet of a second branch first water discharge stop valve (85), the outlet of the second branch first water discharge stop valve (85) is connected with the inlet of a second branch first water discharge pump (86), an outlet of the second branch first drain pump (86) is connected with an inlet of an ice storage pool (87), a first outlet of the ice storage pool (87) is connected with an inlet of a second branch second drain pump (89), an outlet of the second branch second drain pump (89) is connected with an inlet of a second branch second drain stop valve (88), an outlet of the second branch second drain stop valve (88) is connected with an inlet of a second branch heat exchanger (81), a second outlet of the second branch heat exchanger (81) is connected with an inlet of a second branch third drain pump (90), an outlet of the second branch third drain pump (90) is connected with an inlet of a second branch third drain stop valve (91), and an outlet of the second branch third drain stop valve (91) is connected with an inlet of a third three-way valve (104);

a second outlet of the ice storage tank (80) is connected with an inlet of a second branch fourth drainage pump (100), an outlet of the second branch fourth drainage pump (100) is connected with an inlet of a second branch fourth drainage stop valve (99), and an outlet of the second branch fourth drainage stop valve (99) is connected with an inlet of a first three-way valve (9);

a second outlet of the LNG storage tank (1) is connected with an inlet of a third branch water inlet pump (92), an outlet of the third branch water inlet pump (92) is connected with an inlet of a third branch water inlet stop valve (93), an outlet of the third branch water inlet stop valve (93) is connected with an inlet of a first gasifier (94), an outlet of the first gasifier (94) is connected with an inlet of a generator (95), and a first outlet of the generator (95) is connected with an inlet of a storage battery (96); a second outlet of the generator (95) is connected with an inlet of a third branch water discharge pump (97), an outlet of the third branch water discharge pump (97) is connected with an inlet of a third branch water discharge stop valve (98), and an outlet of the third branch water discharge stop valve (98) is connected with an inlet of an urban pipe network interface (106);

a second outlet of the first branch heat exchanger (5) is connected with an inlet of a first branch third drainage pump (77), an outlet of the first branch third drainage pump (77) is connected with an inlet of a first branch third drainage stop valve (78), and an outlet of the first branch third drainage stop valve (78) is connected with an inlet of a third three-way valve (104);

an outlet of the third three-way valve (104) is connected with an inlet of the second gasifier (105), and an outlet of the second gasifier (105) is connected with an inlet of the city pipe network interface (106);

a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21) and a first cabinet third branch heat exchanger (27) are respectively covered above a first cabinet first branch server (16), a first cabinet second branch server (22) and a first cabinet third branch server (28), the heat exchangers are in one-to-one correspondence with the servers, a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45) and a second cabinet third branch heat exchanger (51) are respectively covered above a second cabinet first branch server (40), a second cabinet second branch server (46) and a second cabinet third branch server (52), and the heat exchangers are in one-to-one correspondence with the servers; the third cabinet first branch heat exchanger (59), the third cabinet second branch heat exchanger (65) and the third cabinet third branch heat exchanger (71) respectively cover the third cabinet first branch server (60), the third cabinet second branch server (66) and the third cabinet third branch server (72), and the heat exchangers are in one-to-one correspondence with the servers.

2. The LNG cold energy utilization technology-based data room integrated energy management system according to claim 1, comprising the following processes:

LNG directly cools off server:

when the system starts to operate, LNG stored in an LNG storage tank (1) flows into a water inlet stop valve (3) after being driven by a water inlet pump (2), flows into a first water divider (4) from an outlet of the water inlet stop valve (3), flows into a first branch heat exchanger (5) from the LNG after passing through the first water divider (4), at the moment, a valve of a first water inlet stop valve (80) of a second branch connected with a second outlet of the first water divider (4) is closed, a valve of a first inlet of a first three-way valve (9) is opened, at the moment, the valve of a second inlet of the first three-way valve (9) is closed, R404a stored in a first branch first R404a storage tank (6) enters a first branch first water inlet stop valve (8) after being driven by a first branch first water inlet pump (7), flows to the first branch heat exchanger (5) from an outlet of the first branch first water inlet stop valve (8), and exchanges heat with R404a in the heat exchanger (5), LNG after heat exchange enters a first branch third water discharge stop valve (78) after being driven by a first branch third water discharge pump (77), the flow of the LNG is regulated by the first branch third water discharge stop valve (78), the LNG enters a third three-way valve (104), the LNG flows to a second gasifier (105) from an outlet of the third three-way valve (104), the LNG is gasified by the second gasifier (105) and then sent to an urban pipe network interface (106), R404a absorbs cold and then flows into a second water divider (10) through a first three-way valve (9), R404a flows into a first cabinet water inlet stop valve (12) after being driven by a first cabinet first water inlet pump (11), and the LNG flows into three branches of a first cabinet (101) after the flow of the LNG is regulated by the first cabinet water inlet stop valve (12);

r404a of a first branch in a first cabinet (101) is driven by a first cabinet first secondary water pump (13) and then flows into a first cabinet first branch water inlet stop valve (14), an outlet of the first cabinet first branch water inlet stop valve (14) flows into a first cabinet first branch heat exchanger (15), R404a in the first cabinet first branch heat exchanger (15) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet first branch server (16) through a wall surface, R404a after heat exchange enters a first cabinet first branch water drainage stop valve (18) after being driven by a first cabinet first tertiary drainage pump (17) through an outlet of the first cabinet first branch heat exchanger (15), and flows into a second three-way valve (31) after flow is regulated by the first cabinet first branch water drainage stop valve (18);

r404a of a second branch in the first cabinet (101) is driven by a first cabinet second secondary water inlet pump (19) and then flows into a first cabinet second branch water inlet stop valve (20), an outlet of the first cabinet second branch water inlet stop valve (20) flows into a first cabinet second branch heat exchanger (21), R404a in the first cabinet second branch heat exchanger (21) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet second branch server (22) through a wall surface, R404a after heat exchange enters a first cabinet second branch water drainage stop valve (24) after being driven by an outlet of the first cabinet second branch heat exchanger (21) through a first cabinet second tertiary drainage pump (23), and flows into a second three-way valve (31) after flow regulation by the first cabinet second branch water drainage stop valve (24);

r404a of a third branch in the first cabinet (101) is driven by a first cabinet third secondary water inlet pump (25) and then flows into a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) flows into a first cabinet third branch heat exchanger (27), R404a in the first cabinet third branch heat exchanger (27) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet third branch server (28) through a wall surface, R404a after heat exchange enters a first cabinet third branch water drainage stop valve (30) after being driven by an outlet of the first cabinet third branch heat exchanger (27) through a first cabinet third tertiary drainage pump (29), and flows into a second three-way valve (31) after flow regulation by the first cabinet third branch water drainage stop valve (30); LNG and R404a exchange heat in the heat exchanger (5), the cold energy absorbed by R404a flows through a first three-way valve (9) and enters a second water divider (10), R404a is driven by a first water inlet pump (35) of a second cabinet and then flows into a second cabinet water inlet stop valve (36), and the flow of the cold energy is regulated by the second cabinet water inlet stop valve (36) and then flows into three branches of the second cabinet (102);

r404a of a first branch in the second cabinet (102) is driven by a second cabinet first secondary water pump (37) and then flows into a second cabinet first branch water inlet stop valve (38), an outlet of the second cabinet first branch water inlet stop valve (38) flows into a second cabinet first branch heat exchanger (39), R404a in the second cabinet first branch heat exchanger (39) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet first branch server (40) through a wall surface, R404a after heat exchange enters a second cabinet first branch water drainage stop valve (42) after being driven by an outlet of the second cabinet first branch heat exchanger (39) through a second cabinet first tertiary drainage pump (41), and flows into a second three-way valve (31) after flow is regulated by the second cabinet first branch water drainage stop valve (42);

r404a of a second branch in the second cabinet (102) is driven by a second cabinet second secondary water inlet pump (43) and then flows into a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) flows into a second cabinet second branch heat exchanger (45), R404a in the second cabinet second branch heat exchanger (45) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet second branch server (46) through a wall surface, R404a after heat exchange enters a second cabinet second branch water drainage stop valve (44) after being driven by an outlet of the second cabinet second branch heat exchanger (45) through a second cabinet second tertiary drainage pump (47), and flows into a second three-way valve (31) after flow regulation by the second cabinet second branch water drainage stop valve (44); r404a of a third branch in the second cabinet (102) is driven by a second cabinet third secondary water inlet pump (49) and then flows into a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) flows into a second cabinet third branch heat exchanger (51), R404a in the second cabinet third branch heat exchanger (51) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet third branch server (52) through a wall surface, R404a after heat exchange enters a second cabinet third branch water drain stop valve (54) after being driven by an outlet of the second cabinet third branch heat exchanger (51) through a second cabinet third tertiary drain pump (53), and flows into a second three-way valve (31) after flow regulation by the second cabinet third branch water drain stop valve (54);

LNG and R404a exchange heat in the heat exchanger (5), the cold energy absorbed by R404a flows through a first three-way valve (9) and enters a second water divider (10), R404a is driven by a first water inlet pump (55) of a third cabinet and then flows into a third cabinet water inlet stop valve (56), and the flow of the cold energy is regulated by the third cabinet water inlet stop valve (56) and then flows into three branches of the third cabinet (103);

r404a of a first branch in a third cabinet (103) is driven by a third cabinet first secondary water pump (57) and then flows into a third cabinet first branch water inlet stop valve (58), an outlet of the third cabinet first branch water inlet stop valve (58) flows into a third cabinet first branch heat exchanger (59), R404a in the third cabinet first branch heat exchanger (59) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet first branch server (60) through a wall surface, R404a after heat exchange enters a third cabinet first branch water drainage stop valve (62) after being driven by an outlet of the third cabinet first branch heat exchanger (59) through a third cabinet first tertiary drainage pump (61), and flows into a second three-way valve (31) after flow is regulated by the third cabinet first branch water drainage stop valve (62);

r404a of a second branch in the third cabinet (103) is driven by a second-stage water inlet pump (63) of the third cabinet to flow into a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet flows into a second branch heat exchanger (65) of the third cabinet, R404a in the second branch heat exchanger (65) of the third cabinet exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second branch server (66) of the third cabinet through a wall surface, and the R404a after heat exchange enters a second branch water drain stop valve (68) of the third cabinet after being driven by a second third-stage drain pump (67) of the third cabinet through an outlet of the second branch heat exchanger (65) of the third cabinet, and flows into a second three-way valve (31) after flow is regulated by the second branch water drain stop valve (68) of the third cabinet;

r404a of a third branch in the third cabinet (103) is driven by a third cabinet third secondary water inlet pump (69) and then flows into a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) flows into a third cabinet third branch heat exchanger (71), R404a in the third cabinet third branch heat exchanger (71) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet third branch server (72) through a wall surface, R404a after heat exchange enters a third cabinet third branch water drain stop valve (74) after being driven by an outlet of the third cabinet third branch heat exchanger (71) through a third cabinet third tertiary drain pump (73), and flows into a second three-way valve (31) after flow regulation by the third cabinet third branch water drain stop valve (74);

a part of R404a after heat exchange flows into a first branch first drainage stop valve (32) through a first outlet of a second three-way valve (31), flows into a first branch first drainage pump (33) after the flow is regulated by the first branch first drainage stop valve (32), flows into a water collector (34) after being driven by the first branch first drainage pump (33), flows into a first branch heat exchanger (5) through an outlet of the water collector (34), the other part of R404a after heat exchange flows into a first branch second drainage pump (75) through a second outlet of the second three-way valve (31), flows into a first branch second drainage stop valve (76) after being driven by the first branch second drainage pump (75), flows into a first branch second drainage stop valve (76) after the flow is regulated by an outlet of the first branch second drainage stop valve (76), and then flows into a first branch second R404a storage tank (107), and at the moment, a valve of the first branch second water inlet stop valve (109) is closed, r404a is stored in a first branch second R404a storage tank (107);

LNG ice-storage cooling server:

LNG flows into a first water inlet stop valve (80) of a second branch after being driven by a first water inlet pump (79) of the second branch after passing through a first water distributor (4), at the moment, a valve of a second three-way valve (9) on the first branch is closed, the first water inlet stop valve (80) of the second branch is opened, the flow is regulated by the first water inlet stop valve (80) of the second branch and then flows into a heat exchanger (81) of the second branch, R404a stored in a storage tank (82) of the R404a of the second branch flows into a second water inlet stop valve (84) of the second branch after being driven by a second water inlet pump (83) of the second branch, the LNG flows into the heat exchanger (81) of the second branch after being subjected to heat exchange with the R404a, the R404a flows into the first water outlet stop valve (85) of the second branch from an outlet of the heat exchanger (81) of the second branch after being subjected to heat exchange, and then flows into an ice storage tank (86) of the first water outlet stop valve (85) of the second branch after being subjected to heat exchange, and then flows into an ice Water in the ice storage pool (87) absorbs cold energy and then is condensed into ice, R404a in the ice storage pool (87) flows into a second branch second drainage stop valve (88) through a second branch second drainage pump (89) and flows into a second branch heat exchanger (81) after the flow is regulated by the second branch second drainage stop valve (88);

when the first branch LNG cannot be normally used or the LNG cold energy is less, a valve of a second branch first water inlet stop valve (80) is closed, a valve of a first branch second water inlet stop valve (109) is opened, R404a stored in a first branch second R404a storage tank (107) is driven by a first branch second water inlet pump (108) and then flows into the first branch second water inlet stop valve (109), the flow is regulated by the first branch second water inlet stop valve (109) and then flows into an ice storage tank (87), ice in the ice storage tank (87) is used as a cold source to release the cold energy to R404a, at the moment, a valve at a second inlet of a first three-way valve (9) is opened, a valve at a first inlet of the first three-way valve (9) is closed, R404a is driven by a second branch fourth water discharge pump (100) and then flows into a second branch fourth water discharge stop valve (99), and the flow is regulated by the second branch fourth water discharge stop valve (99) and then flows into the first three-way valve (9), the R404a flows through a first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a first cabinet first water inlet pump (11) and then flows into a first cabinet water inlet stop valve (12), and the flow of the R404 is regulated by the first cabinet water inlet stop valve (12) and then flows into three branches in the first cabinet (101);

r404a of a first branch in a first cabinet (101) is driven by a first cabinet first secondary water pump (13) and then flows into a first cabinet first branch water inlet stop valve (14), an outlet of the first cabinet first branch water inlet stop valve (14) flows into a first cabinet first branch heat exchanger (15), R404a in the first cabinet first branch heat exchanger (15) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet first branch server (16) through a wall surface, R404a after heat exchange enters a first cabinet first branch water drainage stop valve (18) after being driven by a first cabinet first tertiary drainage pump (17) through an outlet of the first cabinet first branch heat exchanger (15), and flows into a second three-way valve (31) after flow is regulated by the first cabinet first branch water drainage stop valve (18); r404a of a second branch in the first cabinet (101) is driven by a first cabinet second secondary water inlet pump (19) and then flows into a first cabinet second branch water inlet stop valve (20), an outlet of the first cabinet second branch water inlet stop valve (20) flows into a first cabinet second branch heat exchanger (21), R404a in the first cabinet second branch heat exchanger (21) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet second branch server (22) through a wall surface, R404a after heat exchange enters a first cabinet second branch water drainage stop valve (24) after being driven by an outlet of the first cabinet second branch heat exchanger (21) through a first cabinet second tertiary drainage pump (23), and flows into a second three-way valve (31) after flow regulation by the first cabinet second branch water drainage stop valve (24); r404a of a third branch in the first cabinet (101) is driven by a first cabinet third secondary water inlet pump (25) and then flows into a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) flows into a first cabinet third branch heat exchanger (27), R404a in the first cabinet third branch heat exchanger (27) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet third branch server (28) through a wall surface, R404a after heat exchange enters a first cabinet third branch water drainage stop valve (30) after being driven by an outlet of the first cabinet third branch heat exchanger (27) through a first cabinet third tertiary drainage pump (29), and flows into a second three-way valve (31) after flow regulation by the first cabinet third branch water drainage stop valve (30);

the R404a is driven by a second branch fourth drainage stop valve (100) and then enters a second branch fourth drainage stop valve (99), the flow of the R404a is regulated by the second branch fourth drainage stop valve (99) and then flows into a first three-way valve (9), the R404a flows through the first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a second cabinet first water inlet pump (35) and then flows into a second cabinet water inlet stop valve (36), and the flow of the R404 is regulated by the second cabinet water inlet stop valve (36) and then flows into three branches of a second cabinet (102);

r404a of a first branch in the second cabinet (102) is driven by a second cabinet first secondary water pump (37) and then flows into a second cabinet first branch water inlet stop valve (38), an outlet of the second cabinet first branch water inlet stop valve (38) flows into a second cabinet first branch heat exchanger (39), R404a in the second cabinet first branch heat exchanger (39) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet first branch server (40) through a wall surface, R404a after heat exchange enters a second cabinet first branch water drainage stop valve (42) after being driven by an outlet of the second cabinet first branch heat exchanger (39) through a second cabinet first tertiary drainage pump (41), and flows into a second three-way valve (31) after flow is regulated by the second cabinet first branch water drainage stop valve (42);

r404a of a second branch in the second cabinet (102) is driven by a second cabinet second secondary water inlet pump (43) and then flows into a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) flows into a second cabinet second branch heat exchanger (45), R404a in the second cabinet second branch heat exchanger (45) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet second branch server (46) through a wall surface, R404a after heat exchange enters a second cabinet second branch water drainage stop valve (44) after being driven by an outlet of the second cabinet second branch heat exchanger (45) through a second cabinet second tertiary drainage pump (47), and flows into a second three-way valve (31) after flow regulation by the second cabinet second branch water drainage stop valve (44); r404a of a third branch in the second cabinet (102) is driven by a second cabinet third secondary water inlet pump (49) and then flows into a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) flows into a second cabinet third branch heat exchanger (51), R404a in the second cabinet third branch heat exchanger (51) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet third branch server (52) through a wall surface, R404a after heat exchange enters a second cabinet third branch water drain stop valve (54) after being driven by an outlet of the second cabinet third branch heat exchanger (51) through a second cabinet third tertiary drain pump (53), and flows into a second three-way valve (31) after flow regulation by the second cabinet third branch water drain stop valve (54); the R404a is driven by a second branch fourth drainage stop valve (100) and then enters a second branch fourth drainage stop valve (99), the flow of the R404a is regulated by the second branch fourth drainage stop valve (99) and then flows into a first three-way valve (9), the R404a flows through the first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a third cabinet first water inlet pump (55) and then flows into a third cabinet water inlet stop valve (56), and the flow of the R404 is regulated by the third cabinet water inlet stop valve (56) and then flows into three branches of a third cabinet (103);

r404a of a first branch in a third cabinet (103) is driven by a third cabinet first secondary water pump (57) and then flows into a third cabinet first branch water inlet stop valve (58), an outlet of the third cabinet first branch water inlet stop valve (58) flows into a third cabinet first branch heat exchanger (59), R404a in the third cabinet first branch heat exchanger (59) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet first branch server (60) through a wall surface, R404a after heat exchange enters a third cabinet first branch water drainage stop valve (62) after being driven by an outlet of the third cabinet first branch heat exchanger (59) through a third cabinet first tertiary drainage pump (61), and flows into a second three-way valve (31) after flow is regulated by the third cabinet first branch water drainage stop valve (62);

r404a of a second branch in the third cabinet (103) is driven by a second-stage water inlet pump (63) of the third cabinet to flow into a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet flows into a second branch heat exchanger (65) of the third cabinet, R404a in the second branch heat exchanger (65) of the third cabinet exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second branch server (66) of the third cabinet through a wall surface, and the R404a after heat exchange enters a second branch water drain stop valve (68) of the third cabinet after being driven by a second third-stage drain pump (67) of the third cabinet through an outlet of the second branch heat exchanger (65) of the third cabinet, and flows into a second three-way valve (31) after flow is regulated by the second branch water drain stop valve (68) of the third cabinet; r404a of a third branch in the third cabinet (103) is driven by a third cabinet third secondary water inlet pump (69) and then flows into a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) flows into a third cabinet third branch heat exchanger (71), R404a in the third cabinet third branch heat exchanger (71) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet third branch server (72) through a wall surface, R404a after heat exchange enters a third cabinet third branch water drain stop valve (74) after being driven by an outlet of the third cabinet third branch heat exchanger (71) through a third cabinet third tertiary drain pump (73), and flows into a second three-way valve (31) after flow regulation by the third cabinet third branch water drain stop valve (74);

r404a after heat exchange in the first cabinet (101), the second cabinet (102) and the third cabinet (103) flows into the second three-way valve (31) through outlets of a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21), a first cabinet third branch heat exchanger (27), a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45), a second cabinet third branch heat exchanger (51), a third cabinet first branch heat exchanger (59), a third cabinet second branch heat exchanger (65) and a third cabinet third branch heat exchanger (71) and is driven by a second outlet of the second three-way valve (31) through a first branch second drainage pump (75), flows into the first branch second drainage stop valve (76) and flows to the first branch second R404a storage tank (107) from the outlet of the first branch second drainage stop valve (76);

LNG after heat exchange of the second branch heat exchanger (81) enters a second branch third water discharge stop valve (91) driven by a second branch third water discharge pump (90), and enters a third three-way valve (104) after the flow is regulated by a second water discharge stop valve (84); flows to the second gasifier (105) from the outlet of the third three-way valve (104), and is gasified by the second gasifier (105) and then is introduced into the city pipe network interface (106);

LNG power generation:

the LNG stored in the LNG storage tank (1) enters a third branch water inlet stop valve (93) after being driven by a third branch water inlet pump (92), enters a first gasifier (94) after the flow is regulated by the third branch water inlet stop valve (93), a part of LNG enters a generator (95) after being gasified by the first gasifier (94), enters a storage battery (96) after being generated by the generator (95) to store electric quantity, and when a normal power supply system of a machine room is interrupted, the storage battery (96) supplies power to enable a data machine room to maintain normal work; and the other part of LNG gasified by the first gasifier (94) enters a third branch drainage stop valve (98) after being driven by a third branch drainage pump (97), and is sent to an urban pipe network interface (106) after the flow is regulated by the third branch drainage stop valve (98).

3. The LNG cold energy utilization technology-based data room comprehensive energy management system of claim 1, wherein: the heat exchanger is a U-shaped shell-and-tube heat exchanger with good low temperature resistance.

4. The LNG cold energy utilization technology-based data room comprehensive energy management system of claim 1, wherein: ethylene glycol aqueous solution is stored in a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21), a first cabinet third branch heat exchanger (27), a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45), a second cabinet third branch server (52), a third cabinet first branch heat exchanger (59), a third cabinet second branch heat exchanger (65) and a third cabinet third branch heat exchanger (71).

5. The LNG cold energy utilization technology-based data room comprehensive energy management system of claim 1, wherein: the ice storage tank (80) adopts an internal ice melting type coil system, the coil is snakelike or cylindrical, the coil is made of steel or plastic, and the storage tank is made of steel.

6. The LNG cold energy utilization technology-based data room comprehensive energy management system of claim 1, wherein: the gasifier (83) adopts an air-temperature gasifier.

7. The LNG cold energy utilization technology-based data room comprehensive energy management system of claim 1, wherein: the first branch first R404a tank (6), the second branch R404a tank (82), and the first branch second R404a tank (107) store R404 a.

Technical Field

The invention relates to a comprehensive energy management system of a data machine room based on an LNG cold energy utilization technology, and belongs to the field of data center environment control.

Background

In recent years, with the rapid development of information technology, the number of global data rooms is increasing, and meanwhile, the problems of dramatic increase of heat dissipation capacity and increase of energy consumption of the data rooms are brought, and how to solve the problems is a serious challenge at present. The LNG is concerned about by virtue of the advantages of high efficiency, energy conservation, cleanness, environmental protection, convenient transportation and the like, the LNG releases a large amount of high-grade cold energy in the gasification process, the cold energy can be effectively utilized in various modes to supply cold for a data machine room, and meanwhile, the vaporized LNG can also provide partial power, so that the LNG has remarkable economic benefit.

At present, the heat of server operation is the thermal main source of computer lab, and the forced air cooling is the radiating main mode of server, and the air cooling energy consumption of traditional single air conditioner is big, and the expense is high, and difficult deep inside local high temperature problem of solving of rack moreover causes the refrigeration inequality easily, the extravagant scheduling problem of cold energy. In the liquid cooling system, because liquid specific heat capacity is big, coefficient of heat conductivity is big, has better radiating effect than air-cooled cooling system to can effectively reduce the energy consumption, but traditional liquid cooling system does not have fixed cold source, is difficult to last stable for the server heat dissipation. LNG is as an ideal cold source, some scholars have proposed to apply it in the data computer lab heat dissipation field, for example patent 201620302875.1 adopts a data computer lab trigeminy to supply the system, through the natural gas as main fuel, the electric power that produces is used for data computer lab cooling, and the exhaust waste heat after the system generates electricity supplies cold, heat to the user through waste heat recovery device, and its defect lies in that the cooling mode is cabinet level cooling, and cold volume does not deepen the inside server of cabinet, can't solve the inside server temperature that still exists of cabinet and gather. Patent 201711437176.3 supplies LNG cold energy to the inside use of data computer lab rack, has increased the ice-storage pond simultaneously, stores cold energy up, as the stand-by power supply of data computer lab, and its defect is not considered to be used for the electricity generation with LNG cold energy, but uses gas turbine alone to generate electricity, and the system is more complicated, and is not energy-conserving enough.

The invention fully considers the LNG to be used for refrigeration and emergency power generation in the data machine room. When the system normally operates, LNG cold energy and a primary refrigerant exchange heat and then enter the cabinet to exchange heat with a heat exchanger attached to the surface of the server for two-stage heat exchange, so that heat generated by the server of the data machine room can be accurately taken away; meanwhile, LNG enters into the other branch to exchange heat with the refrigerant, the refrigerant enters into the ice storage pool to store cold energy in an ice storage mode, and when the LNG of the first branch cannot be normally used or is insufficient in supply, the cold energy can be continuously supplied for heat dissipation of the server. In addition, a large amount of cold energy is released during LNG gasification, LNG cold energy is used for generating power, then the LNG cold energy enters the storage battery to store electric energy, when the data machine room is powered off, the UPS immediately returns the electric energy in the storage battery to the generator through the method of switching the inverter, power is supplied through the generator, and the operation safety of the machine room is ensured.

Disclosure of Invention

The invention aims to provide a comprehensive energy management system of a data machine room based on an LNG cold energy utilization technology.

The system comprises an LNG storage tank (1), a water inlet pump (2), a water inlet stop valve (3), a first water divider (4), a first branch heat exchanger (5), a first branch R404a storage tank (6), a first branch first water inlet pump (7), a first branch first water inlet stop valve (8), a second three-way valve (9), a second water divider (10), a first cabinet first water inlet pump (11), a first cabinet water inlet stop valve (12), a first cabinet first secondary water pump (13), a first cabinet first branch water inlet stop valve (14), a first cabinet first branch heat exchanger (15), a first cabinet first branch server (16), a first cabinet first tertiary water discharge pump (17), a first cabinet first branch water discharge stop valve (18), a first cabinet second secondary water inlet pump (19), a first cabinet second branch water inlet stop valve (20), A first cabinet second branch heat exchanger (21), a first cabinet second branch server (22), a first cabinet second third-level drainage pump (23), a first cabinet second branch drainage stop valve (24), a first cabinet third-level water inlet pump (25), a first cabinet third branch water inlet stop valve (26), a first cabinet third branch heat exchanger (27), a first cabinet third branch server (28), a first cabinet third-level drainage pump (29), a first cabinet third branch drainage stop valve (30), a second three-way valve (31), a first branch first drainage stop valve (32), a first branch first drainage pump (33), a water collector (34), a second cabinet first water inlet pump (35), a second cabinet water inlet stop valve (36), a second cabinet first branch water inlet stop valve (38), a second cabinet first branch heat exchanger (39), A second cabinet first branch server (40), a second cabinet first third-level drainage pump (41), a second cabinet first branch drainage stop valve (42), a second cabinet second-level inlet pump (43), a second cabinet second branch inlet stop valve (44), a second cabinet second branch heat exchanger (45), a second cabinet second branch server (46), a second cabinet second third-level drainage pump (47), a second cabinet second branch drainage stop valve (48), a second cabinet third-level inlet pump (49), a second cabinet third branch inlet stop valve (50), a second cabinet third branch heat exchanger (51), a second cabinet third branch server (52), a second cabinet third-level drainage pump (53), a second cabinet third branch drainage stop valve (54), a third cabinet first inlet pump (55), a third cabinet inlet stop valve (56), A third cabinet first secondary water pump (57), a third cabinet first branch water inlet stop valve (58), a third cabinet first branch heat exchanger (59), a third cabinet first branch server (60), a third cabinet first tertiary water discharge valve (61), a third cabinet first branch water discharge stop valve (62), a third cabinet second secondary water inlet pump (63), a third cabinet second branch water inlet stop valve (64), a third cabinet second branch heat exchanger (65), a third cabinet second branch server (66), a third cabinet second tertiary water discharge pump (67), a third cabinet second branch water discharge stop valve (68), a third cabinet third secondary water inlet pump (69), a third cabinet third branch water inlet stop valve (70), a third cabinet third branch heat exchanger (71), a third cabinet third branch server (72), A third cabinet third-level drainage pump (73), a third cabinet third branch drainage stop valve (74), a first branch second drainage pump (75), a first branch second drainage stop valve (76), a first branch third drainage pump (77), a first branch third drainage stop valve (78), a second branch first water inlet pump (79), a second branch first water inlet stop valve (80), a second branch heat exchanger (81), a second branch R404a storage tank (82), a second branch second water inlet pump (83), a second branch second water inlet stop valve (84), a second branch first drainage stop valve (85), a second branch first drainage pump (86), an ice storage tank (87), a second branch second drainage stop valve (88), a second branch second drainage pump (89), a second branch third drainage pump (90), a second branch third drainage stop valve (91), A third branch water inlet pump (92), a third branch water inlet stop valve (93), a first gasifier (94), a generator (95), a storage battery (96), a third branch water discharge valve (97), a third branch water discharge stop valve (98), a second branch fourth water discharge stop valve (99), a second branch fourth water discharge pump (100), a first cabinet (101), a second cabinet (102), a third cabinet (103), a third three-way valve (104), a second gasifier (105), an urban pipe network interface (106), a first branch second R404a storage tank (107), a first branch second water inlet pump (108) and a first branch second water inlet stop valve (109);

the system comprises a first cabinet first secondary water pump (13), a first cabinet first branch water inlet stop valve (14), a first cabinet first branch heat exchanger (15), a first cabinet first branch server (16), a first cabinet first tertiary drainage pump (17), a first cabinet first branch drainage stop valve (18), a first cabinet second secondary water inlet pump (19), a first cabinet second branch water inlet stop valve (20), a first cabinet second branch heat exchanger (21), a first cabinet second branch server (22), a first cabinet second tertiary drainage pump (23), a first cabinet second branch drainage stop valve (24), a first cabinet third secondary water inlet pump (25), a first cabinet third branch water inlet stop valve (26), a first cabinet third branch heat exchanger (27), a first cabinet third branch server (28), a first cabinet third tertiary drainage pump (29), The third branch drainage stop valve (30) of the first cabinet is positioned in the first cabinet (101);

a second cabinet first secondary water pump (37), a second cabinet first branch water inlet stop valve (38), a second cabinet first branch heat exchanger (39), a second cabinet first branch server (40), a second cabinet first tertiary water discharge pump (41), a second cabinet first branch water discharge stop valve (42), a second cabinet second secondary water inlet pump (43), a second cabinet second branch water inlet stop valve (44), a second cabinet second branch heat exchanger (45), a second cabinet second branch server (46), a second cabinet second tertiary water discharge pump (47), a second cabinet second branch water discharge stop valve (48), a second cabinet third secondary water inlet pump (49), a second cabinet third branch water inlet stop valve (50), a second cabinet third branch heat exchanger (51), a second cabinet third branch server (52), a second cabinet third tertiary water discharge pump (53), The third branch drainage stop valve (54) of the second cabinet is positioned in the second cabinet (102);

a third cabinet first secondary water pump (57), a third cabinet first branch water inlet stop valve (58), a third cabinet first branch heat exchanger (59), a third cabinet first branch server (60), a third cabinet first tertiary water discharge pump (61), a third cabinet first branch water discharge stop valve (62), a third cabinet second secondary water inlet pump (63), a third cabinet second branch water inlet stop valve (64), a third cabinet second branch heat exchanger (65), a third cabinet second branch server (66), a third cabinet second tertiary water discharge pump (67), a third cabinet second branch water discharge stop valve (68), a third cabinet third secondary water inlet pump (69), a third cabinet third branch water inlet stop valve (70), a third cabinet third branch heat exchanger (71), a third cabinet third branch server (72), a third cabinet tertiary water discharge pump (73), The third branch drainage stop valve (74) of the third cabinet is positioned inside the third cabinet (103);

the first three-way valve (9) is provided with two inlets and an outlet, and the two inlets respectively correspond to the outlets of the first branch heat exchanger (5) and the second branch fourth drainage stop valve (99); the first machine cabinet first water inlet pump (11) is provided with an inlet and three outlets, and the three outlets respectively correspond to the first machine cabinet first secondary water inlet pump (13), the first machine cabinet second secondary water inlet pump (19) and the first machine cabinet third secondary water inlet pump (25); the second three-way valve (31) is provided with nine inlets and two outlets, the two outlets are respectively corresponding to the inlet of the first branch first drainage stop valve (32) and the inlet of the first branch second drainage pump (75), and the nine inlets are respectively corresponding to the first cabinet first branch drainage stop valve (18), the first cabinet second branch drainage stop valve (24), the first cabinet third branch drainage stop valve (30), the second cabinet first branch drainage stop valve (42), the second cabinet second branch drainage stop valve (48), the second cabinet third branch drainage stop valve (54), the third cabinet first branch drainage stop valve (62), the third cabinet second branch drainage stop valve (68) and the third cabinet third branch drainage stop valve (74); the first water inlet pump (35) of the second cabinet is provided with an inlet and three outlets, and the three outlets respectively correspond to a first secondary water inlet pump (37) of the second cabinet, a second secondary water inlet pump (43) of the second cabinet and a third secondary water inlet pump (49) of the second cabinet; the first water inlet pump (55) of the third cabinet is provided with an inlet and three outlets, and the three outlets respectively correspond to the first secondary water inlet pump (57) of the third cabinet, the second secondary water inlet pump (63) of the third cabinet and the third secondary water inlet pump (69) of the third cabinet; the third three-way valve (104) is provided with two inlets and an outlet, and the two inlets respectively correspond to the second branch third drainage stop valve (91) and the first branch third drainage stop valve (78);

a first outlet of the LNG storage tank (1) is connected with an inlet of a water inlet pump (2), an outlet of the water inlet pump (2) is connected with an inlet of a water inlet stop valve (3), the water inlet stop valve (3) is connected with an inlet of a first water distributor (4), a first outlet of the first water distributor (4) is connected with an inlet of a first branch heat exchanger (5), an outlet of a first branch R404a storage tank (6) is connected with an inlet of a first branch first water inlet pump (7), an outlet of the first branch first water inlet pump (7) is connected with an inlet of a first branch first water inlet stop valve (8), an outlet of the first branch first water inlet stop valve (8) is connected with an inlet of the first branch heat exchanger (5), a first outlet of the first branch heat exchanger (5) is connected with a first inlet of a first three-way valve (9), and a first outlet of the first three-way valve (9) is connected with an inlet of a second water distributor (10);

a first outlet of the second water separator (10) is connected with an inlet of a first machine cabinet first water inlet pump (11), an outlet of the first machine cabinet first water inlet pump (11) is connected with an inlet of a first machine cabinet water inlet stop valve (12), a first outlet of the first machine cabinet water inlet stop valve (12) is connected with an inlet of a first machine cabinet first secondary water pump (13), an outlet of the first machine cabinet first secondary water pump (13) is connected with an inlet of a first machine cabinet first branch water inlet stop valve (14), an outlet of the first machine cabinet first branch water inlet stop valve (14) is connected with an inlet of a first machine cabinet first branch heat exchanger (15), an outlet of the first machine cabinet first branch heat exchanger (15) is connected with an inlet of a first machine cabinet third-level drainage pump (17), and an outlet of the first machine cabinet first third-level drainage pump (17) is connected with an inlet of the first machine cabinet first branch drainage stop valve (18); an outlet of the first machine cabinet branch drainage stop valve (18) is connected with an inlet of a second three-way valve (31), a first outlet of the second three-way valve (31) is connected with an inlet of a first branch first drainage stop valve (32), an outlet of the first branch first drainage stop valve (32) is connected with an inlet of a first branch first drainage pump (33), an outlet of the first branch first drainage pump (33) is connected with an inlet of a water collector (34), and an outlet of the water collector (34) is connected with a first branch heat exchanger (5);

the second outlet of the first cabinet water inlet stop valve (12) is connected with the inlet of a first cabinet second secondary water inlet pump (19), the outlet of the first cabinet second secondary water inlet pump (19) is connected with the inlet of a first cabinet second branch water inlet stop valve (20), the outlet of the first cabinet second branch water inlet stop valve (20) is connected with the inlet of a first cabinet second branch heat exchanger (21), the outlet of the first cabinet second branch heat exchanger (21) is connected with the inlet of a first cabinet second tertiary drainage pump (23), and the outlet of the first cabinet second tertiary drainage pump (23) is connected with the inlet of a first cabinet second branch drainage stop valve (24); the outlet of the second branch drainage stop valve (24) of the first cabinet is connected with the inlet of a second three-way valve (31);

a third outlet of the first cabinet water inlet stop valve (12) is connected with an inlet of a first cabinet third secondary water inlet pump (25), an outlet of the first cabinet third secondary water inlet pump (25) is connected with an inlet of a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) is connected with an inlet of a first cabinet third branch heat exchanger (27), an outlet of the first cabinet third branch heat exchanger (27) is connected with an inlet of a first cabinet third-level drainage pump (29), and an outlet of the first cabinet third-level drainage pump (29) is connected with an inlet of a first cabinet third branch drainage stop valve (30); the outlet of the second branch drainage stop valve (27) of the first cabinet is connected with the inlet of a second three-way valve (31);

a second outlet of the second water separator (10) is connected with an inlet of a first water inlet pump (35) of a second cabinet, an outlet of the first water inlet pump (35) of the second cabinet is connected with an inlet of a water inlet stop valve (36) of the second cabinet, a first outlet of the water inlet stop valve (36) of the second cabinet is connected with an inlet of a first secondary water pump (37) of the second cabinet, an outlet of the first secondary water pump (37) of the second cabinet is connected with an inlet of a first branch water inlet stop valve (38) of the second cabinet, an outlet of the first branch water inlet stop valve (38) of the second cabinet is connected with an inlet of a first branch heat exchanger (39) of the second cabinet, an outlet of the first branch heat exchanger (39) of the second cabinet is connected with an inlet of a third-level drain pump (41) of the second cabinet, and an outlet of the first-level drain pump (41) of the second cabinet is connected with an inlet of a first branch drain stop valve (42) of the second; the outlet of the first branch drainage stop valve (42) of the second cabinet is connected with the inlet of a second three-way valve (31);

a second outlet of the second cabinet water inlet stop valve (36) is connected with an inlet of a second cabinet second secondary water inlet pump (43), an outlet of the second cabinet second secondary water inlet pump (43) is connected with an inlet of a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) is connected with an inlet of a second cabinet second branch heat exchanger (45), an outlet of the second cabinet second branch heat exchanger (45) is connected with an inlet of a second cabinet second tertiary drainage pump (47), and an outlet of the second cabinet second tertiary drainage pump (47) is connected with an inlet of the second cabinet second branch drainage stop valve (44); the outlet of a second branch drainage stop valve (44) of the second cabinet is connected with the inlet of a second three-way valve (31);

a third outlet of the second cabinet water inlet stop valve (36) is connected with an inlet of a second cabinet third secondary water inlet pump (49), an outlet of the second cabinet third secondary water inlet pump (49) is connected with an inlet of a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) is connected with an inlet of a second cabinet third branch heat exchanger (51), an outlet of the second cabinet third branch heat exchanger (51) is connected with an inlet of a second cabinet third-level drainage pump (53), and an outlet of the second cabinet third-level drainage pump (53) is connected with an inlet of a second cabinet third branch drainage stop valve (54); an outlet of a third branch drainage stop valve (54) of the second cabinet is connected with an inlet of a second three-way valve (31);

a third outlet of the second water separator (10) is connected with an inlet of a first water inlet pump (55) of a third cabinet, an outlet of the first water inlet pump (55) of the third cabinet is connected with an inlet of a water inlet stop valve (56) of the third cabinet, a first outlet of the water inlet stop valve (56) of the third cabinet is connected with an inlet of a first secondary water pump (57) of the third cabinet, an outlet of the first secondary water pump (57) of the third cabinet is connected with an inlet of a first branch water inlet stop valve (58) of the third cabinet, an outlet of the first branch water inlet stop valve (58) of the third cabinet is connected with an inlet of a first branch heat exchanger (59) of the third cabinet, an outlet of the first branch heat exchanger (59) of the third cabinet is connected with an inlet of a third level drain pump (61) of the third cabinet, and an outlet of the first level drain pump (61) of the third cabinet is connected with an inlet of a first branch drain stop valve (62) of the third cabinet; the outlet of the first branch drainage stop valve (62) of the third cabinet is connected with the inlet of a second three-way valve (31);

a second outlet of the third cabinet water inlet stop valve (56) is connected with an inlet of a second secondary water inlet pump (63) of the third cabinet, an outlet of the second secondary water inlet pump (63) of the third cabinet is connected with an inlet of a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet is connected with an inlet of a second branch heat exchanger (65) of the third cabinet, an outlet of the second branch heat exchanger (65) of the third cabinet is connected with an inlet of a second tertiary drain pump (67) of the third cabinet, and an outlet of the second tertiary drain pump (67) of the third cabinet is connected with an inlet of a second branch drain stop valve (68) of the third cabinet; the outlet of the second branch drainage stop valve (68) of the third cabinet is connected with the inlet of a second three-way valve (31);

a third outlet of the third cabinet water inlet stop valve (56) is connected with an inlet of a third cabinet third secondary water inlet pump (69), an outlet of the third cabinet third secondary water inlet pump (69) is connected with an inlet of a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) is connected with an inlet of a third cabinet third branch heat exchanger (71), an outlet of the third cabinet third branch heat exchanger (71) is connected with an inlet of a third cabinet third-level drainage pump (73), and an outlet of the third cabinet third-level drainage pump (73) is connected with an inlet of a third cabinet third branch drainage stop valve (74); the outlet of a third branch drainage stop valve (74) of the third cabinet is connected with the inlet of a second three-way valve (31);

a first outlet of a second three-way valve (31) is connected with an inlet of a first branch first drainage stop valve (32), a second outlet of the second three-way valve (31) is connected with an inlet of a first branch second drainage valve (75), an outlet of the first branch second drainage valve (75) is connected with an inlet of a first branch second drainage stop valve (76), an outlet of the first branch second drainage stop valve (76) is connected with an inlet of a first branch second R404a storage tank (107), an outlet of the first branch second R404a storage tank (107) is connected with an inlet of a first branch second water inlet pump (108), an outlet of the first branch second water inlet pump (108) is connected with an inlet of a first branch second water inlet stop valve (109), and an outlet of the first branch second water inlet stop valve (109) is connected with an inlet of an ice storage pool (87);

the second outlet of the first water separator (4) is connected with the inlet of a second branch first water inlet pump (79), the outlet of the second branch first water inlet pump (79) is connected with the inlet of a second branch first water inlet stop valve (80), the outlet of the second branch first water inlet stop valve (80) is connected with the inlet of a second branch heat exchanger (81), the outlet of a second branch R404a storage tank (82) is connected with the inlet of a second branch second water inlet pump (83), the outlet of the second water inlet pump (83) is connected with the inlet of a second branch second water inlet stop valve (84), the outlet of the second branch second water inlet stop valve (84) is connected with the inlet of the second branch heat exchanger (81), the first outlet of the second branch heat exchanger (81) is connected with the inlet of a second branch first water discharge stop valve (85), the outlet of the second branch first water discharge stop valve (85) is connected with the inlet of a second branch first water discharge pump (86), an outlet of the second branch first drain pump (86) is connected with an inlet of an ice storage pool (87), a first outlet of the ice storage pool (87) is connected with an inlet of a second branch second drain pump (89), an outlet of the second branch second drain pump (89) is connected with an inlet of a second branch second drain stop valve (88), an outlet of the second branch second drain stop valve (88) is connected with an inlet of a second branch heat exchanger (81), a second outlet of the second branch heat exchanger (81) is connected with an inlet of a second branch third drain pump (90), an outlet of the second branch third drain pump (90) is connected with an inlet of a second branch third drain stop valve (91), and an outlet of the second branch third drain stop valve (91) is connected with an inlet of a third three-way valve (104);

a second outlet of the ice storage tank (80) is connected with an inlet of a second branch fourth drainage pump (100), an outlet of the second branch fourth drainage pump (100) is connected with an inlet of a second branch fourth drainage stop valve (99), and an outlet of the second branch fourth drainage stop valve (99) is connected with an inlet of a first three-way valve (9);

a second outlet of the LNG storage tank (1) is connected with an inlet of a third branch water inlet pump (92), an outlet of the third branch water inlet pump (92) is connected with an inlet of a third branch water inlet stop valve (93), an outlet of the third branch water inlet stop valve (93) is connected with an inlet of a first gasifier (94), an outlet of the first gasifier (94) is connected with an inlet of a generator (95), and a first outlet of the generator (95) is connected with an inlet of a storage battery (96); a second outlet of the generator (95) is connected with an inlet of a third branch water discharge pump (97), an outlet of the third branch water discharge pump (97) is connected with an inlet of a third branch water discharge stop valve (98), and an outlet of the third branch water discharge stop valve (98) is connected with an inlet of an urban pipe network interface (106);

a second outlet of the first branch heat exchanger (5) is connected with an inlet of a first branch third drainage pump (77), an outlet of the first branch third drainage pump (77) is connected with an inlet of a first branch third drainage stop valve (78), and an outlet of the first branch third drainage stop valve (78) is connected with an inlet of a third three-way valve (104);

an outlet of the third three-way valve (104) is connected with an inlet of the second gasifier (105), and an outlet of the second gasifier (105) is connected with an inlet of the city pipe network interface (106);

a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21) and a first cabinet third branch heat exchanger (27) are respectively covered above a first cabinet first branch server (16), a first cabinet second branch server (22) and a first cabinet third branch server (28), the heat exchangers are in one-to-one correspondence with the servers, a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45) and a second cabinet third branch heat exchanger (51) are respectively covered above a second cabinet first branch server (40), a second cabinet second branch server (46) and a second cabinet third branch server (52), and the heat exchangers are in one-to-one correspondence with the servers; the third cabinet first branch heat exchanger (59), the third cabinet second branch heat exchanger (65) and the third cabinet third branch heat exchanger (71) respectively cover the third cabinet first branch server (60), the third cabinet second branch server (66) and the third cabinet third branch server (72), and the heat exchangers are in one-to-one correspondence with the servers.

The system comprises the following operation processes:

LNG directly cools off server:

when the system starts to operate, LNG stored in an LNG storage tank (1) flows into a water inlet stop valve (3) after being driven by a water inlet pump (2), flows into a first water divider (4) from an outlet of the water inlet stop valve (3), flows into a first branch heat exchanger (5) from the LNG after passing through the first water divider (4), at the moment, a valve of a first water inlet stop valve (80) of a second branch connected with a second outlet of the first water divider (4) is closed, a valve of a first inlet of a first three-way valve (9) is opened, at the moment, the valve of a second inlet of the first three-way valve (9) is closed, R404a stored in a first branch first R404a storage tank (6) enters a first branch first water inlet stop valve (8) after being driven by a first branch first water inlet pump (7), flows to the first branch heat exchanger (5) from an outlet of the first branch first water inlet stop valve (8), and exchanges heat with R404a in the heat exchanger (5), LNG after heat exchange enters a first branch third water discharge stop valve (78) after being driven by a first branch third water discharge pump (77), the flow of the LNG is regulated by the first branch third water discharge stop valve (78), the LNG enters a third three-way valve (104), the LNG flows to a second gasifier (105) from an outlet of the third three-way valve (104), the LNG is gasified by the second gasifier (105) and then sent to an urban pipe network interface (106), R404a absorbs cold and then flows into a second water divider (10) through a first three-way valve (9), R404a flows into a first cabinet water inlet stop valve (12) after being driven by a first cabinet first water inlet pump (11), and the LNG flows into three branches of a first cabinet (101) after the flow of the LNG is regulated by the first cabinet water inlet stop valve (12);

r404a of a first branch in a first cabinet (101) is driven by a first cabinet first secondary water pump (13) and then flows into a first cabinet first branch water inlet stop valve (14), an outlet of the first cabinet first branch water inlet stop valve (14) flows into a first cabinet first branch heat exchanger (15), R404a in the first cabinet first branch heat exchanger (15) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet first branch server (16) through a wall surface, R404a after heat exchange enters a first cabinet first branch water drainage stop valve (18) after being driven by a first cabinet first tertiary drainage pump (17) through an outlet of the first cabinet first branch heat exchanger (15), and flows into a second three-way valve (31) after flow is regulated by the first cabinet first branch water drainage stop valve (18);

r404a of a second branch in the first cabinet (101) is driven by a first cabinet second secondary water inlet pump (19) and then flows into a first cabinet second branch water inlet stop valve (20), an outlet of the first cabinet second branch water inlet stop valve (20) flows into a first cabinet second branch heat exchanger (21), R404a in the first cabinet second branch heat exchanger (21) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet second branch server (22) through a wall surface, R404a after heat exchange enters a first cabinet second branch water drainage stop valve (24) after being driven by an outlet of the first cabinet second branch heat exchanger (21) through a first cabinet second tertiary drainage pump (23), and flows into a second three-way valve (31) after flow regulation by the first cabinet second branch water drainage stop valve (24);

r404a of a third branch in the first cabinet (101) is driven by a first cabinet third secondary water inlet pump (25) and then flows into a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) flows into a first cabinet third branch heat exchanger (27), R404a in the first cabinet third branch heat exchanger (27) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet third branch server (28) through a wall surface, R404a after heat exchange enters a first cabinet third branch water drainage stop valve (30) after being driven by an outlet of the first cabinet third branch heat exchanger (27) through a first cabinet third tertiary drainage pump (29), and flows into a second three-way valve (31) after flow regulation by the first cabinet third branch water drainage stop valve (30); LNG and R404a exchange heat in the heat exchanger (5), the cold energy absorbed by R404a flows through a first three-way valve (9) and enters a second water divider (10), R404a is driven by a first water inlet pump (35) of a second cabinet and then flows into a second cabinet water inlet stop valve (36), and the flow of the cold energy is regulated by the second cabinet water inlet stop valve (36) and then flows into three branches of the second cabinet (102);

r404a of a first branch in the second cabinet (102) is driven by a second cabinet first secondary water pump (37) and then flows into a second cabinet first branch water inlet stop valve (38), an outlet of the second cabinet first branch water inlet stop valve (38) flows into a second cabinet first branch heat exchanger (39), R404a in the second cabinet first branch heat exchanger (39) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet first branch server (40) through a wall surface, R404a after heat exchange enters a second cabinet first branch water drainage stop valve (42) after being driven by an outlet of the second cabinet first branch heat exchanger (39) through a second cabinet first tertiary drainage pump (41), and flows into a second three-way valve (31) after flow is regulated by the second cabinet first branch water drainage stop valve (42);

r404a of a second branch in the second cabinet (102) is driven by a second cabinet second secondary water inlet pump (43) and then flows into a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) flows into a second cabinet second branch heat exchanger (45), R404a in the second cabinet second branch heat exchanger (45) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet second branch server (46) through a wall surface, R404a after heat exchange enters a second cabinet second branch water drainage stop valve (44) after being driven by an outlet of the second cabinet second branch heat exchanger (45) through a second cabinet second tertiary drainage pump (47), and flows into a second three-way valve (31) after flow regulation by the second cabinet second branch water drainage stop valve (44); r404a of a third branch in the second cabinet (102) is driven by a second cabinet third secondary water inlet pump (49) and then flows into a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) flows into a second cabinet third branch heat exchanger (51), R404a in the second cabinet third branch heat exchanger (51) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet third branch server (52) through a wall surface, R404a after heat exchange enters a second cabinet third branch water drain stop valve (54) after being driven by an outlet of the second cabinet third branch heat exchanger (51) through a second cabinet third tertiary drain pump (53), and flows into a second three-way valve (31) after flow regulation by the second cabinet third branch water drain stop valve (54);

LNG and R404a exchange heat in the heat exchanger (5), the cold energy absorbed by R404a flows through a first three-way valve (9) and enters a second water divider (10), R404a is driven by a first water inlet pump (55) of a third cabinet and then flows into a third cabinet water inlet stop valve (56), and the flow of the cold energy is regulated by the third cabinet water inlet stop valve (56) and then flows into three branches of the third cabinet (103);

r404a of a first branch in a third cabinet (103) is driven by a third cabinet first secondary water pump (57) and then flows into a third cabinet first branch water inlet stop valve (58), an outlet of the third cabinet first branch water inlet stop valve (58) flows into a third cabinet first branch heat exchanger (59), R404a in the third cabinet first branch heat exchanger (59) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet first branch server (60) through a wall surface, R404a after heat exchange enters a third cabinet first branch water drainage stop valve (62) after being driven by an outlet of the third cabinet first branch heat exchanger (59) through a third cabinet first tertiary drainage pump (61), and flows into a second three-way valve (31) after flow is regulated by the third cabinet first branch water drainage stop valve (62);

r404a of a second branch in the third cabinet (103) is driven by a second-stage water inlet pump (63) of the third cabinet to flow into a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet flows into a second branch heat exchanger (65) of the third cabinet, R404a in the second branch heat exchanger (65) of the third cabinet exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second branch server (66) of the third cabinet through a wall surface, and the R404a after heat exchange enters a second branch water drain stop valve (68) of the third cabinet after being driven by a second third-stage drain pump (67) of the third cabinet through an outlet of the second branch heat exchanger (65) of the third cabinet, and flows into a second three-way valve (31) after flow is regulated by the second branch water drain stop valve (68) of the third cabinet;

r404a of a third branch in the third cabinet (103) is driven by a third cabinet third secondary water inlet pump (69) and then flows into a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) flows into a third cabinet third branch heat exchanger (71), R404a in the third cabinet third branch heat exchanger (71) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet third branch server (72) through a wall surface, R404a after heat exchange enters a third cabinet third branch water drain stop valve (74) after being driven by an outlet of the third cabinet third branch heat exchanger (71) through a third cabinet third tertiary drain pump (73), and flows into a second three-way valve (31) after flow regulation by the third cabinet third branch water drain stop valve (74);

a part of R404a after heat exchange flows into a first branch first drainage stop valve (32) through a first outlet of a second three-way valve (31), flows into a first branch first drainage pump (33) after the flow is regulated by the first branch first drainage stop valve (32), flows into a water collector (34) after being driven by the first branch first drainage pump (33), flows into a first branch heat exchanger (5) through an outlet of the water collector (34), the other part of R404a after heat exchange flows into a first branch second drainage pump (75) through a second outlet of the second three-way valve (31), flows into a first branch second drainage stop valve (76) after being driven by the first branch second drainage pump (75), flows into a first branch second drainage stop valve (76) after the flow is regulated by an outlet of the first branch second drainage stop valve (76), and then flows into a first branch second R404a storage tank (107), and at the moment, a valve of the first branch second water inlet stop valve (109) is closed, r404a is stored in a first branch second R404a storage tank (107);

LNG ice-storage cooling server:

LNG flows into a first water inlet stop valve (80) of a second branch after being driven by a first water inlet pump (79) of the second branch after passing through a first water distributor (4), at the moment, a valve of a second three-way valve (9) on the first branch is closed, the first water inlet stop valve (80) of the second branch is opened, the flow is regulated by the first water inlet stop valve (80) of the second branch and then flows into a heat exchanger (81) of the second branch, R404a stored in a storage tank (82) of the R404a of the second branch flows into a second water inlet stop valve (84) of the second branch after being driven by a second water inlet pump (83) of the second branch, the LNG flows into the heat exchanger (81) of the second branch after being subjected to heat exchange with the R404a, the R404a flows into the first water outlet stop valve (85) of the second branch from an outlet of the heat exchanger (81) of the second branch after being subjected to heat exchange, and then flows into an ice storage tank (86) of the first water outlet stop valve (85) of the second branch after being subjected to heat exchange, and then flows into an ice Water in the ice storage pool (87) absorbs cold energy and then is condensed into ice, R404a in the ice storage pool (87) flows into a second branch second drainage stop valve (88) through a second branch second drainage pump (89) and flows into a second branch heat exchanger (81) after the flow is regulated by the second branch second drainage stop valve (88);

when the first branch LNG cannot be normally used or the LNG cold energy is less, a valve of a second branch first water inlet stop valve (80) is closed, a valve of a first branch second water inlet stop valve (109) is opened, R404a stored in a first branch second R404a storage tank (107) is driven by a first branch second water inlet pump (108) and then flows into the first branch second water inlet stop valve (109), the flow is regulated by the first branch second water inlet stop valve (109) and then flows into an ice storage tank (87), ice in the ice storage tank (87) is used as a cold source to release the cold energy to R404a, at the moment, a valve at a second inlet of a first three-way valve (9) is opened, a valve at a first inlet of the first three-way valve (9) is closed, R404a is driven by a second branch fourth water discharge pump (100) and then flows into a second branch fourth water discharge stop valve (99), and the flow is regulated by the second branch fourth water discharge stop valve (99) and then flows into the first three-way valve (9), the R404a flows through a first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a first cabinet first water inlet pump (11) and then flows into a first cabinet water inlet stop valve (12), and the flow of the R404 is regulated by the first cabinet water inlet stop valve (12) and then flows into three branches in the first cabinet (101);

r404a of a first branch in a first cabinet (101) is driven by a first cabinet first secondary water pump (13) and then flows into a first cabinet first branch water inlet stop valve (14), an outlet of the first cabinet first branch water inlet stop valve (14) flows into a first cabinet first branch heat exchanger (15), R404a in the first cabinet first branch heat exchanger (15) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet first branch server (16) through a wall surface, R404a after heat exchange enters a first cabinet first branch water drainage stop valve (18) after being driven by a first cabinet first tertiary drainage pump (17) through an outlet of the first cabinet first branch heat exchanger (15), and flows into a second three-way valve (31) after flow is regulated by the first cabinet first branch water drainage stop valve (18); r404a of a second branch in the first cabinet (101) is driven by a first cabinet second secondary water inlet pump (19) and then flows into a first cabinet second branch water inlet stop valve (20), an outlet of the first cabinet second branch water inlet stop valve (20) flows into a first cabinet second branch heat exchanger (21), R404a in the first cabinet second branch heat exchanger (21) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet second branch server (22) through a wall surface, R404a after heat exchange enters a first cabinet second branch water drainage stop valve (24) after being driven by an outlet of the first cabinet second branch heat exchanger (21) through a first cabinet second tertiary drainage pump (23), and flows into a second three-way valve (31) after flow regulation by the first cabinet second branch water drainage stop valve (24); r404a of a third branch in the first cabinet (101) is driven by a first cabinet third secondary water inlet pump (25) and then flows into a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) flows into a first cabinet third branch heat exchanger (27), R404a in the first cabinet third branch heat exchanger (27) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet third branch server (28) through a wall surface, R404a after heat exchange enters a first cabinet third branch water drainage stop valve (30) after being driven by an outlet of the first cabinet third branch heat exchanger (27) through a first cabinet third tertiary drainage pump (29), and flows into a second three-way valve (31) after flow regulation by the first cabinet third branch water drainage stop valve (30);

the R404a is driven by a second branch fourth drainage stop valve (100) and then enters a second branch fourth drainage stop valve (99), the flow of the R404a is regulated by the second branch fourth drainage stop valve (99) and then flows into a first three-way valve (9), the R404a flows through the first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a second cabinet first water inlet pump (35) and then flows into a second cabinet water inlet stop valve (36), and the flow of the R404 is regulated by the second cabinet water inlet stop valve (36) and then flows into three branches of a second cabinet (102);

r404a of a first branch in the second cabinet (102) is driven by a second cabinet first secondary water pump (37) and then flows into a second cabinet first branch water inlet stop valve (38), an outlet of the second cabinet first branch water inlet stop valve (38) flows into a second cabinet first branch heat exchanger (39), R404a in the second cabinet first branch heat exchanger (39) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet first branch server (40) through a wall surface, R404a after heat exchange enters a second cabinet first branch water drainage stop valve (42) after being driven by an outlet of the second cabinet first branch heat exchanger (39) through a second cabinet first tertiary drainage pump (41), and flows into a second three-way valve (31) after flow is regulated by the second cabinet first branch water drainage stop valve (42);

r404a of a second branch in the second cabinet (102) is driven by a second cabinet second secondary water inlet pump (43) and then flows into a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) flows into a second cabinet second branch heat exchanger (45), R404a in the second cabinet second branch heat exchanger (45) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet second branch server (46) through a wall surface, R404a after heat exchange enters a second cabinet second branch water drainage stop valve (44) after being driven by an outlet of the second cabinet second branch heat exchanger (45) through a second cabinet second tertiary drainage pump (47), and flows into a second three-way valve (31) after flow regulation by the second cabinet second branch water drainage stop valve (44); r404a of a third branch in the second cabinet (102) is driven by a second cabinet third secondary water inlet pump (49) and then flows into a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) flows into a second cabinet third branch heat exchanger (51), R404a in the second cabinet third branch heat exchanger (51) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet third branch server (52) through a wall surface, R404a after heat exchange enters a second cabinet third branch water drain stop valve (54) after being driven by an outlet of the second cabinet third branch heat exchanger (51) through a second cabinet third tertiary drain pump (53), and flows into a second three-way valve (31) after flow regulation by the second cabinet third branch water drain stop valve (54); the R404a is driven by a second branch fourth drainage stop valve (100) and then enters a second branch fourth drainage stop valve (99), the flow of the R404a is regulated by the second branch fourth drainage stop valve (99) and then flows into a first three-way valve (9), the R404a flows through the first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a third cabinet first water inlet pump (55) and then flows into a third cabinet water inlet stop valve (56), and the flow of the R404 is regulated by the third cabinet water inlet stop valve (56) and then flows into three branches of a third cabinet (103);

r404a of a first branch in a third cabinet (103) is driven by a third cabinet first secondary water pump (57) and then flows into a third cabinet first branch water inlet stop valve (58), an outlet of the third cabinet first branch water inlet stop valve (58) flows into a third cabinet first branch heat exchanger (59), R404a in the third cabinet first branch heat exchanger (59) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet first branch server (60) through a wall surface, R404a after heat exchange enters a third cabinet first branch water drainage stop valve (62) after being driven by an outlet of the third cabinet first branch heat exchanger (59) through a third cabinet first tertiary drainage pump (61), and flows into a second three-way valve (31) after flow is regulated by the third cabinet first branch water drainage stop valve (62);

r404a of a second branch in the third cabinet (103) is driven by a second-stage water inlet pump (63) of the third cabinet to flow into a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet flows into a second branch heat exchanger (65) of the third cabinet, R404a in the second branch heat exchanger (65) of the third cabinet exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second branch server (66) of the third cabinet through a wall surface, and the R404a after heat exchange enters a second branch water drain stop valve (68) of the third cabinet after being driven by a second third-stage drain pump (67) of the third cabinet through an outlet of the second branch heat exchanger (65) of the third cabinet, and flows into a second three-way valve (31) after flow is regulated by the second branch water drain stop valve (68) of the third cabinet; r404a of a third branch in the third cabinet (103) is driven by a third cabinet third secondary water inlet pump (69) and then flows into a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) flows into a third cabinet third branch heat exchanger (71), R404a in the third cabinet third branch heat exchanger (71) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet third branch server (72) through a wall surface, R404a after heat exchange enters a third cabinet third branch water drain stop valve (74) after being driven by an outlet of the third cabinet third branch heat exchanger (71) through a third cabinet third tertiary drain pump (73), and flows into a second three-way valve (31) after flow regulation by the third cabinet third branch water drain stop valve (74);

r404a after heat exchange in the first cabinet (101), the second cabinet (102) and the third cabinet (103) flows into the second three-way valve (31) through outlets of a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21), a first cabinet third branch heat exchanger (27), a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45), a second cabinet third branch heat exchanger (51), a third cabinet first branch heat exchanger (59), a third cabinet second branch heat exchanger (65) and a third cabinet third branch heat exchanger (71) and is driven by a second outlet of the second three-way valve (31) through a first branch second drainage pump (75), flows into the first branch second drainage stop valve (76) and flows to the first branch second R404a storage tank (107) from the outlet of the first branch second drainage stop valve (76);

LNG after heat exchange of the second branch heat exchanger (81) enters a second branch third water discharge stop valve (91) driven by a second branch third water discharge pump (90), and enters a third three-way valve (104) after the flow is regulated by a second water discharge stop valve (84); flows to the second gasifier (105) from the outlet of the third three-way valve (104), and is gasified by the second gasifier (105) and then is introduced into the city pipe network interface (106);

LNG power generation:

the LNG stored in the LNG storage tank (1) enters a third branch water inlet stop valve (93) after being driven by a third branch water inlet pump (92), enters a first gasifier (94) after the flow is regulated by the third branch water inlet stop valve (93), a part of LNG enters a generator (95) after being gasified by the first gasifier (94), enters a storage battery (96) after being generated by the generator (95) to store electric quantity, and when a normal power supply system of a machine room is interrupted, the storage battery (96) supplies power to enable a data machine room to maintain normal work; and the other part of LNG gasified by the first gasifier (94) enters a third branch drainage stop valve (98) after being driven by a third branch drainage pump (97), and is sent to an urban pipe network interface (106) after the flow is regulated by the third branch drainage stop valve (98).

The heat exchangers in the system are all U-shaped shell-and-tube heat exchangers with good low temperature resistance. Ethylene glycol aqueous solution is stored in a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21), a first cabinet third branch heat exchanger (27), a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45), a second cabinet third branch server (52), a third cabinet first branch heat exchanger (59), a third cabinet second branch heat exchanger (65) and a third cabinet third branch heat exchanger (71). The ice storage tank (80) adopts an internal ice melting type coil system, the coil is snakelike or cylindrical, the coil is made of steel or plastic, and the storage tank is made of steel. The gasifier (83) adopts an air-temperature gasifier. The first branch first R404a tank (6), the second branch R404a tank (82), and the first branch second R404a tank (107) store R404 a.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Reference designations in FIG. 1: the system comprises an LNG storage tank, a water inlet pump 2, a water inlet stop valve 3, a water inlet stop valve 4, a first water divider 5, a first branch heat exchanger 6, a first branch R404a storage tank 7, a first branch first water inlet pump 8, a first branch first water inlet stop valve 9, a second three-way valve 10, a second water divider 11, a first cabinet first water inlet pump 12, a first cabinet water inlet stop valve 13, a first cabinet first secondary water pump 14, a first cabinet first branch water inlet stop valve 15, a first cabinet first branch heat exchanger 16, a first cabinet first branch server 17, a first cabinet first tertiary drainage pump 18, a first cabinet first branch drainage stop valve 19, a first cabinet second secondary water inlet pump 20, a first cabinet second branch water inlet stop valve 21, a first cabinet second branch heat exchanger 22, a first cabinet second branch server 18, a first cabinet drainage stop valve 19, a first cabinet second secondary water inlet pump 20, a first cabinet second branch water inlet stop valve 21, a first cabinet second branch heat exchanger 22, a first cabinet, 23. The system comprises a first cabinet, a second tertiary drainage pump, 24, a first cabinet, a second branch drainage stop valve, 25, a first cabinet, a third secondary water inlet pump, 26, a first cabinet, a third branch water inlet stop valve, 27, a first cabinet, a third branch heat exchanger, 28, a first cabinet, a third branch server, 29, a first cabinet, a third tertiary drainage pump, 30, a first cabinet, a third branch drainage stop valve, 31, a second three-way valve, 32, a first branch first drainage stop valve, 33, a first branch first drainage pump, 34, a water collector, 35, a second cabinet, a first water inlet pump, 36, a second cabinet water inlet stop valve, 37, a second cabinet, a first secondary water inlet pump, 38, a second cabinet, a first branch water inlet stop valve, 39, a second cabinet, a first branch heat exchanger, 40, a second cabinet, a first branch server, 41, a second cabinet, a first tertiary drainage pump, 42, a second cabinet, a first branch water inlet stop valve, 38, a first branch water inlet stop valve, a second cabinet, 43 second cabinet second secondary water inlet pump, 44 second cabinet second branch water inlet stop valve, 45 second cabinet second branch heat exchanger, 46 second cabinet second branch server, 47 second cabinet second tertiary water discharge pump, 48 second cabinet second branch water discharge stop valve, 49 second cabinet third secondary water inlet pump, 50 second cabinet third branch water inlet stop valve, 51 second cabinet third branch heat exchanger, 52 second cabinet third branch server, 53 second cabinet third tertiary water discharge pump, 54 second cabinet third branch water discharge stop valve, 55 third cabinet first water inlet pump, 56 third cabinet water inlet stop valve, 57 third cabinet first secondary water pump, 58 third cabinet first branch water inlet stop valve, 59 third cabinet first branch heat exchanger, 60 third cabinet first branch server, 61 third cabinet first tertiary water discharge pump, 60 third cabinet first branch water discharge pump, 62. A third cabinet first branch water drainage stop valve, 63, a third cabinet second secondary water inlet pump, 64, a third cabinet second branch water inlet stop valve, 65, a third cabinet second branch heat exchanger, 66, a third cabinet second branch server, 67, a third cabinet second tertiary drain pump, 68, a third cabinet second branch water drainage stop valve, 69, a third cabinet third secondary water inlet pump, 70, a third cabinet third branch water inlet stop valve, 71, a third cabinet third branch heat exchanger, 72, a third cabinet third branch server, 73, a third cabinet third tertiary drain pump, 74, a third cabinet third branch water drainage stop valve, 75, a first branch second drain pump, 76, a first branch second drain stop valve, 77, a first branch third drain pump, 78, a first branch third drain stop valve, 79, a second branch first water inlet pump, 80, a second branch first water inlet stop valve, 80, a first branch first water inlet stop valve, 76, a first branch second drain stop valve, 77, a first branch third drain stop valve, 78, a first branch third drain stop valve, 79, a second branch first water, 81. The system comprises a second branch heat exchanger, 82, a second branch R404a storage tank, 83, a second branch second water inlet pump, 84, a second branch second water inlet stop valve, 85, a second branch first water discharge stop valve, 86, a second branch first water discharge pump, 87, an ice storage tank, 88, a second branch second water discharge stop valve, 89, a second branch second water discharge pump, 90, a second branch third water discharge pump, 91, a second branch third water discharge stop valve, 92, a third branch water inlet pump, 93, a third branch water inlet stop valve, 94, a first gasifier, 95, a generator, 96, a storage battery, 97, a third branch water discharge pump, 98, a third branch water discharge stop valve, 99, a second branch fourth water discharge stop valve, 100, a second branch fourth water discharge pump, 101, a first cabinet, 102, a second cabinet, 103, a third cabinet, 104, 105, a second gasifier three-way valve, a third water discharge stop valve, a third water discharge stop valve, a fourth water, 106. Urban pipe network interface, 107, first branch, second R404a storage tank, 108, first branch, second water inlet pump, 109, first branch, second water inlet stop valve.

Detailed Description

As shown in fig. 1, a data room comprehensive energy management system based on LNG cold energy utilization technology mainly includes an LNG storage tank 1, a water inlet pump 2, a water inlet stop valve 3, a first water splitter 4, a first branch heat exchanger 5, a first branch R404a storage tank 6, a first branch first water inlet pump 7, a first branch first water inlet stop valve 8, a second three-way valve 9, a second water splitter 10, a first cabinet first water inlet pump 11, a first cabinet water inlet stop valve 12, a first cabinet first secondary water pump 13, a first cabinet first branch water inlet stop valve 14, a first cabinet first branch heat exchanger 15, a first cabinet first branch server 16, a first cabinet first tertiary water discharge pump 17, a first cabinet first branch water discharge stop valve 18, a first cabinet second secondary water inlet pump 19, a first cabinet second branch water inlet stop valve 20, a first cabinet second branch heat exchanger 21, a first cabinet second branch heat exchanger, A first cabinet second branch server 22, a first cabinet second tertiary drainage pump 23, a first cabinet second branch drainage stop valve 24, a first cabinet third secondary water inlet pump 25, a first cabinet third branch water inlet stop valve 26, a first cabinet third branch heat exchanger 27, a first cabinet third branch server 28, a first cabinet third tertiary drainage pump 29, a first cabinet third branch drainage stop valve 30, a second three-way valve 31, a first branch first drainage stop valve 32, a first branch first drainage pump 33, a water collector 34, a second cabinet first water inlet pump 35, a second cabinet water inlet stop valve 36, a second cabinet first secondary water pump 37, a second cabinet first branch water inlet stop valve 38, a second cabinet first branch heat exchanger 39, a second cabinet first branch server 40, a second cabinet first tertiary drainage pump 41, a second cabinet first branch drainage stop valve 42, A second cabinet second secondary water inlet pump 43, a second cabinet second branch water inlet stop valve 44, a second cabinet second branch heat exchanger 45, a second cabinet second branch server 46, a second cabinet second tertiary water discharge pump 47, a second cabinet second branch water discharge stop valve 48, a second cabinet third secondary water inlet pump 49, a second cabinet third branch water inlet stop valve 50, a second cabinet third branch heat exchanger 51, a second cabinet third branch server 52, a second cabinet third tertiary water discharge pump 53, a second cabinet third branch water discharge stop valve 54, a third cabinet first water inlet pump 55, a third cabinet water inlet stop valve 56, a third cabinet first secondary water pump 57, a third cabinet first branch water inlet stop valve 58, a third cabinet first branch heat exchanger 59, a third cabinet first branch server 60, a third cabinet first tertiary water discharge pump 61, a third cabinet first branch water discharge stop valve 62, a third cabinet first secondary water inlet stop valve 58, a third cabinet first branch heat exchanger 59, a third cabinet first branch water discharge stop valve 60, a third, A third cabinet second secondary water inlet pump 63, a third cabinet second branch water inlet stop valve 64, a third cabinet second branch heat exchanger 65, a third cabinet second branch server 66, a third cabinet second tertiary water discharge pump 67, a third cabinet second branch water discharge stop valve 68, a third cabinet third secondary water inlet pump 69, a third cabinet third branch water inlet stop valve 70, a third cabinet third branch heat exchanger 71, a third cabinet third branch server 72, a third cabinet third tertiary water discharge pump 73, a third cabinet third branch water discharge stop valve 74, a first branch second water discharge pump 75, a first branch second water discharge stop valve 76, a first branch third water discharge pump 77, a first branch third water discharge stop valve 78, a second branch first water inlet pump 79, a second branch first water inlet stop valve 80, a second branch heat exchanger 81, a second branch R404a storage tank 82, a second branch second water inlet pump 83, a third branch heat exchanger 71, a third branch water discharge stop valve 77, a third branch water discharge pump 79, a second branch first water inlet pump 79, a second, A second branch second water inlet stop valve 84, a second branch first water outlet stop valve 85, a second branch first water outlet pump 86, an ice storage tank 87, a second branch second water outlet stop valve 88, a second branch second water outlet pump 89, a second branch third water outlet pump 90, a second branch third water outlet stop valve 91, a third branch water inlet pump 92, a third branch water inlet stop valve 93, a first vaporizer 94, a generator 95, a battery 96, a third branch water outlet pump 97, a third branch water outlet stop valve 98, a second branch fourth water outlet stop valve 99, a second branch fourth water outlet pump 100, a first cabinet 101, a second cabinet 102, a third cabinet 103, a third three-way valve 104, a second vaporizer 105, an urban pipe network interface 106, a first branch second R404a storage tank 107, a first branch second water inlet pump 108, and a first branch second water inlet stop valve 109.

The heat exchangers in the cabinets correspond to the servers one by one and are arranged close to the upper surfaces of the servers.

LNG directly cools off server:

when the system starts to operate, LNG stored in an LNG storage tank (1) flows into a water inlet stop valve (3) after being driven by a water inlet pump (2), flows into a first water divider (4) from an outlet of the water inlet stop valve (3), flows into a first branch heat exchanger (5) from the LNG after passing through the first water divider (4), at the moment, a valve of a first water inlet stop valve (80) of a second branch connected with a second outlet of the first water divider (4) is closed, a valve of a first inlet of a first three-way valve (9) is opened, at the moment, the valve of a second inlet of the first three-way valve (9) is closed, R404a stored in a first branch first R404a storage tank (6) enters a first branch first water inlet stop valve (8) after being driven by a first branch first water inlet pump (7), flows to the first branch heat exchanger (5) from an outlet of the first branch first water inlet stop valve (8), and exchanges heat with R404a in the heat exchanger (5), LNG after heat exchange enters a first branch third water discharge stop valve (78) after being driven by a first branch third water discharge pump (77), the flow of the LNG is regulated by the first branch third water discharge stop valve (78), the LNG enters a third three-way valve (104), the LNG flows to a second gasifier (105) from an outlet of the third three-way valve (104), the LNG is gasified by the second gasifier (105) and then sent to an urban pipe network interface (106), R404a absorbs cold and then flows into a second water divider (10) through a first three-way valve (9), R404a flows into a first cabinet water inlet stop valve (12) after being driven by a first cabinet first water inlet pump (11), and the LNG flows into three branches of a first cabinet (101) after the flow of the LNG is regulated by the first cabinet water inlet stop valve (12);

r404a of a first branch in a first cabinet (101) is driven by a first cabinet first secondary water pump (13) and then flows into a first cabinet first branch water inlet stop valve (14), an outlet of the first cabinet first branch water inlet stop valve (14) flows into a first cabinet first branch heat exchanger (15), R404a in the first cabinet first branch heat exchanger (15) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet first branch server (16) through a wall surface, R404a after heat exchange enters a first cabinet first branch water drainage stop valve (18) after being driven by a first cabinet first tertiary drainage pump (17) through an outlet of the first cabinet first branch heat exchanger (15), and flows into a second three-way valve (31) after flow is regulated by the first cabinet first branch water drainage stop valve (18);

r404a of a second branch in the first cabinet (101) is driven by a first cabinet second secondary water inlet pump (19) and then flows into a first cabinet second branch water inlet stop valve (20), an outlet of the first cabinet second branch water inlet stop valve (20) flows into a first cabinet second branch heat exchanger (21), R404a in the first cabinet second branch heat exchanger (21) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet second branch server (22) through a wall surface, R404a after heat exchange enters a first cabinet second branch water drainage stop valve (24) after being driven by an outlet of the first cabinet second branch heat exchanger (21) through a first cabinet second tertiary drainage pump (23), and flows into a second three-way valve (31) after flow regulation by the first cabinet second branch water drainage stop valve (24);

r404a of a third branch in the first cabinet (101) is driven by a first cabinet third secondary water inlet pump (25) and then flows into a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) flows into a first cabinet third branch heat exchanger (27), R404a in the first cabinet third branch heat exchanger (27) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet third branch server (28) through a wall surface, R404a after heat exchange enters a first cabinet third branch water drainage stop valve (30) after being driven by an outlet of the first cabinet third branch heat exchanger (27) through a first cabinet third tertiary drainage pump (29), and flows into a second three-way valve (31) after flow regulation by the first cabinet third branch water drainage stop valve (30); LNG and R404a exchange heat in the heat exchanger (5), the cold energy absorbed by R404a flows through a first three-way valve (9) and enters a second water divider (10), R404a is driven by a first water inlet pump (35) of a second cabinet and then flows into a second cabinet water inlet stop valve (36), and the flow of the cold energy is regulated by the second cabinet water inlet stop valve (36) and then flows into three branches of the second cabinet (102);

r404a of a first branch in the second cabinet (102) is driven by a second cabinet first secondary water pump (37) and then flows into a second cabinet first branch water inlet stop valve (38), an outlet of the second cabinet first branch water inlet stop valve (38) flows into a second cabinet first branch heat exchanger (39), R404a in the second cabinet first branch heat exchanger (39) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet first branch server (40) through a wall surface, R404a after heat exchange enters a second cabinet first branch water drainage stop valve (42) after being driven by an outlet of the second cabinet first branch heat exchanger (39) through a second cabinet first tertiary drainage pump (41), and flows into a second three-way valve (31) after flow is regulated by the second cabinet first branch water drainage stop valve (42);

r404a of a second branch in the second cabinet (102) is driven by a second cabinet second secondary water inlet pump (43) and then flows into a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) flows into a second cabinet second branch heat exchanger (45), R404a in the second cabinet second branch heat exchanger (45) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet second branch server (46) through a wall surface, R404a after heat exchange enters a second cabinet second branch water drainage stop valve (44) after being driven by an outlet of the second cabinet second branch heat exchanger (45) through a second cabinet second tertiary drainage pump (47), and flows into a second three-way valve (31) after flow regulation by the second cabinet second branch water drainage stop valve (44); r404a of a third branch in the second cabinet (102) is driven by a second cabinet third secondary water inlet pump (49) and then flows into a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) flows into a second cabinet third branch heat exchanger (51), R404a in the second cabinet third branch heat exchanger (51) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet third branch server (52) through a wall surface, R404a after heat exchange enters a second cabinet third branch water drain stop valve (54) after being driven by an outlet of the second cabinet third branch heat exchanger (51) through a second cabinet third tertiary drain pump (53), and flows into a second three-way valve (31) after flow regulation by the second cabinet third branch water drain stop valve (54);

LNG and R404a exchange heat in the heat exchanger (5), the cold energy absorbed by R404a flows through a first three-way valve (9) and enters a second water divider (10), R404a is driven by a first water inlet pump (55) of a third cabinet and then flows into a third cabinet water inlet stop valve (56), and the flow of the cold energy is regulated by the third cabinet water inlet stop valve (56) and then flows into three branches of the third cabinet (103);

r404a of a first branch in a third cabinet (103) is driven by a third cabinet first secondary water pump (57) and then flows into a third cabinet first branch water inlet stop valve (58), an outlet of the third cabinet first branch water inlet stop valve (58) flows into a third cabinet first branch heat exchanger (59), R404a in the third cabinet first branch heat exchanger (59) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet first branch server (60) through a wall surface, R404a after heat exchange enters a third cabinet first branch water drainage stop valve (62) after being driven by an outlet of the third cabinet first branch heat exchanger (59) through a third cabinet first tertiary drainage pump (61), and flows into a second three-way valve (31) after flow is regulated by the third cabinet first branch water drainage stop valve (62);

r404a of a second branch in the third cabinet (103) is driven by a second-stage water inlet pump (63) of the third cabinet to flow into a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet flows into a second branch heat exchanger (65) of the third cabinet, R404a in the second branch heat exchanger (65) of the third cabinet exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second branch server (66) of the third cabinet through a wall surface, and the R404a after heat exchange enters a second branch water drain stop valve (68) of the third cabinet after being driven by a second third-stage drain pump (67) of the third cabinet through an outlet of the second branch heat exchanger (65) of the third cabinet, and flows into a second three-way valve (31) after flow is regulated by the second branch water drain stop valve (68) of the third cabinet;

r404a of a third branch in the third cabinet (103) is driven by a third cabinet third secondary water inlet pump (69) and then flows into a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) flows into a third cabinet third branch heat exchanger (71), R404a in the third cabinet third branch heat exchanger (71) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet third branch server (72) through a wall surface, R404a after heat exchange enters a third cabinet third branch water drain stop valve (74) after being driven by an outlet of the third cabinet third branch heat exchanger (71) through a third cabinet third tertiary drain pump (73), and flows into a second three-way valve (31) after flow regulation by the third cabinet third branch water drain stop valve (74);

a part of R404a after heat exchange flows into a first branch first drainage stop valve (32) through a first outlet of a second three-way valve (31), flows into a first branch first drainage pump (33) after the flow is regulated by the first branch first drainage stop valve (32), flows into a water collector (34) after being driven by the first branch first drainage pump (33), flows into a first branch heat exchanger (5) through an outlet of the water collector (34), the other part of R404a after heat exchange flows into a first branch second drainage pump (75) through a second outlet of the second three-way valve (31), flows into a first branch second drainage stop valve (76) after being driven by the first branch second drainage pump (75), flows into a first branch second drainage stop valve (76) after the flow is regulated by an outlet of the first branch second drainage stop valve (76), and then flows into a first branch second R404a storage tank (107), and at the moment, a valve of the first branch second water inlet stop valve (109) is closed, r404a is stored in a first branch second R404a storage tank (107);

LNG ice-storage cooling server:

LNG flows into a first water inlet stop valve (80) of a second branch after being driven by a first water inlet pump (79) of the second branch after passing through a first water distributor (4), at the moment, a valve of a second three-way valve (9) on the first branch is closed, the first water inlet stop valve (80) of the second branch is opened, the flow is regulated by the first water inlet stop valve (80) of the second branch and then flows into a heat exchanger (81) of the second branch, R404a stored in a storage tank (82) of the R404a of the second branch flows into a second water inlet stop valve (84) of the second branch after being driven by a second water inlet pump (83) of the second branch, the LNG flows into the heat exchanger (81) of the second branch after being subjected to heat exchange with the R404a, the R404a flows into the first water outlet stop valve (85) of the second branch from an outlet of the heat exchanger (81) of the second branch after being subjected to heat exchange, and then flows into an ice storage tank (86) of the first water outlet stop valve (85) of the second branch after being subjected to heat exchange, and then flows into an ice Water in the ice storage pool (87) absorbs cold energy and then is condensed into ice, R404a in the ice storage pool (87) flows into a second branch second drainage stop valve (88) through a second branch second drainage pump (89) and flows into a second branch heat exchanger (81) after the flow is regulated by the second branch second drainage stop valve (88);

when the first branch LNG cannot be normally used or the LNG cold energy is less, a valve of a second branch first water inlet stop valve (80) is closed, a valve of a first branch second water inlet stop valve (109) is opened, R404a stored in a first branch second R404a storage tank (107) is driven by a first branch second water inlet pump (108) and then flows into the first branch second water inlet stop valve (109), the flow is regulated by the first branch second water inlet stop valve (109) and then flows into an ice storage tank (87), ice in the ice storage tank (87) is used as a cold source to release the cold energy to R404a, at the moment, a valve at a second inlet of a first three-way valve (9) is opened, a valve at a first inlet of the first three-way valve (9) is closed, R404a is driven by a second branch fourth water discharge pump (100) and then flows into a second branch fourth water discharge stop valve (99), and the flow is regulated by the second branch fourth water discharge stop valve (99) and then flows into the first three-way valve (9), the R404a flows through a first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a first cabinet first water inlet pump (11) and then flows into a first cabinet water inlet stop valve (12), and the flow of the R404 is regulated by the first cabinet water inlet stop valve (12) and then flows into three branches in the first cabinet (101);

r404a of a first branch in a first cabinet (101) is driven by a first cabinet first secondary water pump (13) and then flows into a first cabinet first branch water inlet stop valve (14), an outlet of the first cabinet first branch water inlet stop valve (14) flows into a first cabinet first branch heat exchanger (15), R404a in the first cabinet first branch heat exchanger (15) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet first branch server (16) through a wall surface, R404a after heat exchange enters a first cabinet first branch water drainage stop valve (18) after being driven by a first cabinet first tertiary drainage pump (17) through an outlet of the first cabinet first branch heat exchanger (15), and flows into a second three-way valve (31) after flow is regulated by the first cabinet first branch water drainage stop valve (18); r404a of a second branch in the first cabinet (101) is driven by a first cabinet second secondary water inlet pump (19) and then flows into a first cabinet second branch water inlet stop valve (20), an outlet of the first cabinet second branch water inlet stop valve (20) flows into a first cabinet second branch heat exchanger (21), R404a in the first cabinet second branch heat exchanger (21) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet second branch server (22) through a wall surface, R404a after heat exchange enters a first cabinet second branch water drainage stop valve (24) after being driven by an outlet of the first cabinet second branch heat exchanger (21) through a first cabinet second tertiary drainage pump (23), and flows into a second three-way valve (31) after flow regulation by the first cabinet second branch water drainage stop valve (24); r404a of a third branch in the first cabinet (101) is driven by a first cabinet third secondary water inlet pump (25) and then flows into a first cabinet third branch water inlet stop valve (26), an outlet of the first cabinet third branch water inlet stop valve (26) flows into a first cabinet third branch heat exchanger (27), R404a in the first cabinet third branch heat exchanger (27) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a first cabinet third branch server (28) through a wall surface, R404a after heat exchange enters a first cabinet third branch water drainage stop valve (30) after being driven by an outlet of the first cabinet third branch heat exchanger (27) through a first cabinet third tertiary drainage pump (29), and flows into a second three-way valve (31) after flow regulation by the first cabinet third branch water drainage stop valve (30);

the R404a is driven by a second branch fourth drainage stop valve (100) and then enters a second branch fourth drainage stop valve (99), the flow of the R404a is regulated by the second branch fourth drainage stop valve (99) and then flows into a first three-way valve (9), the R404a flows through the first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a second cabinet first water inlet pump (35) and then flows into a second cabinet water inlet stop valve (36), and the flow of the R404 is regulated by the second cabinet water inlet stop valve (36) and then flows into three branches of a second cabinet (102);

r404a of a first branch in the second cabinet (102) is driven by a second cabinet first secondary water pump (37) and then flows into a second cabinet first branch water inlet stop valve (38), an outlet of the second cabinet first branch water inlet stop valve (38) flows into a second cabinet first branch heat exchanger (39), R404a in the second cabinet first branch heat exchanger (39) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet first branch server (40) through a wall surface, R404a after heat exchange enters a second cabinet first branch water drainage stop valve (42) after being driven by an outlet of the second cabinet first branch heat exchanger (39) through a second cabinet first tertiary drainage pump (41), and flows into a second three-way valve (31) after flow is regulated by the second cabinet first branch water drainage stop valve (42);

r404a of a second branch in the second cabinet (102) is driven by a second cabinet second secondary water inlet pump (43) and then flows into a second cabinet second branch water inlet stop valve (44), an outlet of the second cabinet second branch water inlet stop valve (44) flows into a second cabinet second branch heat exchanger (45), R404a in the second cabinet second branch heat exchanger (45) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet second branch server (46) through a wall surface, R404a after heat exchange enters a second cabinet second branch water drainage stop valve (44) after being driven by an outlet of the second cabinet second branch heat exchanger (45) through a second cabinet second tertiary drainage pump (47), and flows into a second three-way valve (31) after flow regulation by the second cabinet second branch water drainage stop valve (44); r404a of a third branch in the second cabinet (102) is driven by a second cabinet third secondary water inlet pump (49) and then flows into a second cabinet third branch water inlet stop valve (50), an outlet of the second cabinet third branch water inlet stop valve (50) flows into a second cabinet third branch heat exchanger (51), R404a in the second cabinet third branch heat exchanger (51) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second cabinet third branch server (52) through a wall surface, R404a after heat exchange enters a second cabinet third branch water drain stop valve (54) after being driven by an outlet of the second cabinet third branch heat exchanger (51) through a second cabinet third tertiary drain pump (53), and flows into a second three-way valve (31) after flow regulation by the second cabinet third branch water drain stop valve (54); the R404a is driven by a second branch fourth drainage stop valve (100) and then enters a second branch fourth drainage stop valve (99), the flow of the R404a is regulated by the second branch fourth drainage stop valve (99) and then flows into a first three-way valve (9), the R404a flows through the first three-way valve (9) and enters a second water divider (10), a part of R404a is driven by a third cabinet first water inlet pump (55) and then flows into a third cabinet water inlet stop valve (56), and the flow of the R404 is regulated by the third cabinet water inlet stop valve (56) and then flows into three branches of a third cabinet (103);

r404a of a first branch in a third cabinet (103) is driven by a third cabinet first secondary water pump (57) and then flows into a third cabinet first branch water inlet stop valve (58), an outlet of the third cabinet first branch water inlet stop valve (58) flows into a third cabinet first branch heat exchanger (59), R404a in the third cabinet first branch heat exchanger (59) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet first branch server (60) through a wall surface, R404a after heat exchange enters a third cabinet first branch water drainage stop valve (62) after being driven by an outlet of the third cabinet first branch heat exchanger (59) through a third cabinet first tertiary drainage pump (61), and flows into a second three-way valve (31) after flow is regulated by the third cabinet first branch water drainage stop valve (62);

r404a of a second branch in the third cabinet (103) is driven by a second-stage water inlet pump (63) of the third cabinet to flow into a second branch water inlet stop valve (64) of the third cabinet, an outlet of the second branch water inlet stop valve (64) of the third cabinet flows into a second branch heat exchanger (65) of the third cabinet, R404a in the second branch heat exchanger (65) of the third cabinet exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a second branch server (66) of the third cabinet through a wall surface, and the R404a after heat exchange enters a second branch water drain stop valve (68) of the third cabinet after being driven by a second third-stage drain pump (67) of the third cabinet through an outlet of the second branch heat exchanger (65) of the third cabinet, and flows into a second three-way valve (31) after flow is regulated by the second branch water drain stop valve (68) of the third cabinet; r404a of a third branch in the third cabinet (103) is driven by a third cabinet third secondary water inlet pump (69) and then flows into a third cabinet third branch water inlet stop valve (70), an outlet of the third cabinet third branch water inlet stop valve (70) flows into a third cabinet third branch heat exchanger (71), R404a in the third cabinet third branch heat exchanger (71) exchanges heat with ethylene glycol, heat is transferred to the ethylene glycol from a third cabinet third branch server (72) through a wall surface, R404a after heat exchange enters a third cabinet third branch water drain stop valve (74) after being driven by an outlet of the third cabinet third branch heat exchanger (71) through a third cabinet third tertiary drain pump (73), and flows into a second three-way valve (31) after flow regulation by the third cabinet third branch water drain stop valve (74);

r404a after heat exchange in the first cabinet (101), the second cabinet (102) and the third cabinet (103) flows into the second three-way valve (31) through outlets of a first cabinet first branch heat exchanger (15), a first cabinet second branch heat exchanger (21), a first cabinet third branch heat exchanger (27), a second cabinet first branch heat exchanger (39), a second cabinet second branch heat exchanger (45), a second cabinet third branch heat exchanger (51), a third cabinet first branch heat exchanger (59), a third cabinet second branch heat exchanger (65) and a third cabinet third branch heat exchanger (71) and is driven by a second outlet of the second three-way valve (31) through a first branch second drainage pump (75), flows into the first branch second drainage stop valve (76) and flows to the first branch second R404a storage tank (107) from the outlet of the first branch second drainage stop valve (76);

LNG after heat exchange of the second branch heat exchanger (81) enters a second branch third water discharge stop valve (91) driven by a second branch third water discharge pump (90), and enters a third three-way valve (104) after the flow is regulated by a second water discharge stop valve (84); flows to the second gasifier (105) from the outlet of the third three-way valve (104), and is gasified by the second gasifier (105) and then is introduced into the city pipe network interface (106);

LNG power generation:

the LNG stored in the LNG storage tank (1) enters a third branch water inlet stop valve (93) after being driven by a third branch water inlet pump (92), enters a first gasifier (94) after the flow is regulated by the third branch water inlet stop valve (93), a part of LNG enters a generator (95) after being gasified by the first gasifier (94), enters a storage battery (96) after being generated by the generator (95) to store electric quantity, and when a normal power supply system of a machine room is interrupted, the storage battery (96) supplies power to enable a data machine room to maintain normal work; and the other part of LNG gasified by the first gasifier (94) enters a third branch drainage stop valve (98) after being driven by a third branch drainage pump (97), and is sent to an urban pipe network interface (106) after the flow is regulated by the third branch drainage stop valve (98).

According to the LNG cold energy utilization technology-based data machine room comprehensive energy management system, LNG and R404a are subjected to primary heat exchange in the first branch, R404a carries cold energy to enter a cabinet, two-stage heat exchange is performed in the heat exchanger attached to the surface of a server, and heat exchange is performed accurately with the server through the wall surface in the heat exchanger; meanwhile, LNG enters into the other branch circuit to exchange heat with the refrigerant, the refrigerant enters into the ice storage tank to store cold energy in an ice storage mode, and when the LNG of the first branch circuit cannot be normally used or is insufficient in supply, the ice storage tank can be used for continuously supplying cold energy for heat dissipation of the server. In addition, a large amount of cold energy is released during LNG gasification, utilizes LNG cold energy electricity generation, then gets into the battery and stores the electric energy, when the data computer lab outage, can use the battery to supply power for the computer lab, has ensured the operation safety of computer lab. Compared with the existing cooling method for conveying cold air into the cabinet, the cooling efficiency is higher, and the cooling effect is better; and the cold energy released by LNG vaporization is utilized to provide a cold source for the data machine room server, so that the energy is saved, other purposes are considered, and the high economic benefit is achieved.