阅读说明：本技术 一种封闭式环网柜的自主散热装置 (Independent heat dissipation device of closed ring main unit ) 是由 夏建华 于 2020-06-02 设计创作，主要内容包括：本发明涉及环网柜散热技术领域,具体涉及一种封闭式环网柜的自主散热装置,包括底座和环网柜,还包括内置板、控制器、载架、导热组件、水冷机构和风冷机构,所述环网柜固定设置于底座顶部,所述内置板固定设置于环网柜内部底端,所述控制器设置于环网柜内壁一侧,所述载架设置于环网柜的内部,所述导热组件设置于环网柜内部并与两组支撑架顶部固定连接,所述水冷机构设置于环网柜内部且固定设置于内置板上,所述风冷机构设置于环网柜的两侧,所述风冷机构包括两组风冷组件,本发明通过打开环网柜的拉门,并操纵控制器即可对环网柜内部进行有效散热,操作方便,安全高效,极大提高了封闭式环网柜的自主散热效率。(The invention relates to the technical field of ring main unit heat dissipation, in particular to an autonomous heat dissipation device of a closed ring main unit, which comprises a base and the ring main unit, and further comprises an internal plate, a controller, a carrier, a heat conduction assembly, a water cooling mechanism and an air cooling mechanism, wherein the ring main unit is fixedly arranged at the top of the base, the internal plate is fixedly arranged at the bottom end inside the ring main unit, the controller is arranged at one side of the inner wall of the ring main unit, the carrier is arranged inside the ring main unit, the heat conduction assembly is arranged inside the ring main unit and is fixedly connected with the tops of two groups of supporting frames, the water cooling mechanism is arranged inside the ring main unit and is fixedly arranged on the internal plate, the air cooling mechanism is arranged at two sides of the ring main unit, and the air cooling mechanism comprises two groups of air cooling assemblies. Safe high-efficient, greatly improved the independently radiating efficiency of closed looped netowrk cabinet.)

1. An autonomous heat dissipation device of a closed ring main unit comprises a base (1) and a ring main unit (2), and is characterized by further comprising a built-in plate (3), a controller (4), a carrier (5), a heat conduction assembly (6), a water cooling mechanism (7) and an air cooling mechanism (8), wherein the ring main unit (2) is fixedly arranged at the top of the base (1), the built-in plate (3) is fixedly arranged at the bottom end inside the ring main unit (2), the controller (4) is arranged at one side of the inner wall of the ring main unit (2), the carrier (5) is arranged inside the ring main unit (2), the carrier (5) comprises two groups of support frames (50), the two groups of support frames (50) are symmetrically and fixedly arranged on the built-in plate (3), the heat conduction assembly (6) is arranged inside the ring main unit (2) and is fixedly connected with the tops of the two groups of support frames (50), the water cooling mechanism (7) is arranged inside the ring main unit (2) and is fixedly arranged on the, water cooling mechanism (7) are located under two sets of support frames (50), air cooling mechanism (8) set up in the both sides of looped netowrk cabinet (2), air cooling mechanism (8) include two sets of air-cooled subassemblies (80), and are two sets of air-cooled subassembly (80) set up on the relative lateral wall of looped netowrk cabinet (2) and with looped netowrk cabinet (2) fixed connection.

2. The autonomous heat dissipation device of a closed ring main unit as claimed in claim 1, the water cooling mechanism (7) comprises a circulating water pump (70), a fixed seat (71), a heat absorption bent pipe (72), a water inlet pipe (73), a hydraulic pressure meter (74), a first cooling box (75) and a second cooling box (76), the fixed seat (71) is fixedly arranged on the built-in plate (3) through bolts, the circulating water pump (70) is fixedly arranged on the fixed seat (71), the heat absorption curved pipe (72) is positioned at the top of the built-in plate (3), one end of the heat absorption curved pipe (72) is fixedly inserted and connected with the water outlet (763) end of the circulating water pump (70), the water inlet pipe (73) is positioned between the second cooling tank (76) and the circulating water pump (70), and one end of the water inlet pipe (73) is fixedly inserted into the water inlet end of the circulating water pump (70).

3. The autonomous heat dissipation device of a closed ring main unit as claimed in claim 2, wherein the hydraulic gauge (74) is fixedly disposed at a water inlet end of the circulating water pump (70), the first cooling box (75) is fixedly disposed at one side of the built-in plate (3), a pair of opposite side walls of the first cooling box (75) are respectively provided with a cooling port (750), the other end of the heat absorption curved pipe (72) is hermetically inserted into the pair of cooling ports (750) and penetrates through the first cooling box (75), the second cooling pipe is fixedly disposed on the built-in plate (3) and is located beside the first cooling box (75), two adjacent sides of the second cooling box (76) are respectively provided with a backflow port (762) and a water outlet (763), the other end of the heat absorption curved pipe (72) is fixedly inserted into the backflow port (762) and communicated to the inside of the second cooling box (76), and the other end of the water inlet pipe (73) is fixedly inserted into the water outlet (3) and communicated to the second cooling box (763) (76) Of the inner part of (a).

4. The autonomous heat dissipation device of closed ring main unit as claimed in claim 3, wherein the first cooling box (75) has a pair of symmetrical heat conduction ports (751) at its side, and the first cooling box (75) has a first cover (752) at its top, one side of the first cover (752) is hinged to the first cooling box (75), and the other side of the top of the first cover (752) is fixed with a first handle (753), the second cooling box (76) has a second cover (760) at its top, one side of the second cover (760) is hinged to the second cooling box (76), and the other side of the top of the second cover (760) is fixed with a second handle (761).

5. The autonomous heat dissipation device of the closed ring main unit as claimed in claim 4, the opposite side walls of the ring main unit (2) are provided with mounting holes (20), the two groups of air cooling components (80) have the same structure and size, and the two groups of air cooling components (80) comprise a fixed outer frame (800), a fixed inner frame (801), a fan (802) and a first ventilation net (803), the fixed outer frame (800) is fixedly arranged in the corresponding mounting hole (20) through a bolt, the fixed inner frame (801) is fixedly arranged in the fixed outer frame (800) through bolts, the fan (802) is rotatably arranged in the fixed inner frame (801), the first ventilation net (803) is fixedly arranged at one end of the fixed outer frame (800) and is positioned in the ring main unit (2), and the two groups of fans (802) in the air cooling assembly (80) are arranged in a straight line in the horizontal direction.

6. The autonomous heat dissipation device of a closed ring main unit as claimed in claim 5, wherein the heat conduction assembly (6) comprises two sets of heat conduction pipes (60), the two sets of heat conduction pipes (60) are disposed in one-to-one correspondence with the two sets of support frames (50), one end of each set of heat conduction pipe (60) is fixedly inserted into and connected with the top of the corresponding support frame (50), and the other end of the heat conduction pipe (60) is inserted into the first cooling box (75) through the heat conduction port (751) and downward along the inner wall of the ring main unit (2).

7. The autonomous heat dissipation device of a closed ring main unit as claimed in claim 6, wherein each of the two opposite sides of the upper half of the ring main unit (2) is provided with an air passing hole (21), each air passing hole (21) is provided with a second air passing net (22), the two sets of second air passing nets (22) are fixedly connected to the ring main unit (2), each of the top of the pair of support frames (50) is provided with a vent hole (500), and each vent hole (500) corresponds to one air passing hole (21) of the ring main unit (2).

8. The autonomous heat dissipation device of a closed ring main unit as claimed in claim 7, wherein two sets of sliding doors (23) are disposed on one side of the ring main unit (2), both the two sets of sliding doors (23) are hinged to the ring main unit (2), and a first sliding slot (230) is disposed on one set of sliding doors (23).

9. The autonomous heat dissipation device of a closed ring main unit as claimed in claim 8, wherein a rectangular hole (24) is formed in the other side of the ring main unit (2) opposite to the sliding door (23), a sealing cover (25) is disposed in the rectangular hole (24), the bottom of the sealing cover (25) is hinged to the ring main unit (2), and a second pull groove (250) is disposed at the top of the sealing cover (25).

10. The autonomous heat dissipation device of closed ring main unit as claimed in claim 9, wherein the controller (4) is electrically connected to the circulating water pump (70) and the pair of fans (802).

Technical Field

The invention relates to the technical field of ring main unit heat dissipation, in particular to an autonomous heat dissipation device of a closed ring main unit.

Background

The ring main unit is a group of electric equipment for transmission and distribution, which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, the application of the ring main unit is very wide, and the core part of the ring main unit adopts a load switch and a fuse, so that the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.

The ring main unit is that each distribution branch is provided with a switch cabinet, and the bus of the switch cabinet is a part of the ring main line at the same time, namely, the ring main line is formed by connecting the buses of each outgoing line cabinet, each outgoing line cabinet is called as a ring main unit, and the equipment in the ring main unit is mainly a load switch.

The looped netowrk cabinet's advantage is many, and it can prevent personnel's maloperation, effectively protects personal and equipment safety. When the grounding switch is in a closed position, the platform brake operation of the load switch can not be carried out, once the front door of the ring main unit is opened, the load switch can not be switched on again, and therefore the misoperation is effectively prevented.

And inside many annular main lines of looped netowrk cabinet constitute large-scale circuit system, the electric wire all has the resistance, can produce the heat in the use, thereby lead to the inside temperature of looped netowrk cabinet to rise gradually, and then cause the potential safety hazard to the use of insulating layer on the electric wire and circuit, therefore need dispel the heat to looped netowrk cabinet inside, the heat dissipation is handled the heat dissipation to the manual work of present heat dissipation to the looped netowrk cabinet all being discontinuity basically, there is not fine self-cooling means, therefore it is necessary to design the autonomic heat abstractor of closed looped netowrk cabinet.

Disclosure of Invention

The invention aims to provide an autonomous heat dissipation device of a closed ring main unit.

In order to achieve the purpose, the invention adopts the following technical scheme:

provides an autonomous heat dissipation device of a closed ring main unit, which comprises a base, the ring main unit, a built-in plate, a controller, a carrying frame, a heat conduction assembly, a water cooling mechanism and an air cooling mechanism, the ring main unit is fixedly arranged at the top of the base, the built-in plate is fixedly arranged at the bottom end in the ring main unit, the controller is arranged on one side of the inner wall of the ring main unit, the carrier frame is arranged inside the ring main unit, the carrier frame comprises two groups of supporting frames, the two groups of supporting frames are symmetrically and fixedly arranged on the built-in plate, the heat conduction assembly is arranged in the ring main unit and is fixedly connected with the tops of the two groups of supporting frames, the water cooling mechanism is arranged in the ring main unit and is fixedly arranged on the built-in plate, the water cooling mechanism is positioned under the two groups of supporting frames, the air cooling mechanism is arranged on two sides of the ring main unit and comprises two groups of air cooling assemblies, and the two groups of air cooling assemblies are arranged on opposite side walls of the ring main unit and are fixedly connected with the ring main unit.

Further, water-cooling mechanism includes circulating water pump, fixing base, heat absorption bent pipe, inlet tube, hydraulic pressure table, first cooler bin and second cooler bin, the fixing base passes through the bolt fastening and sets up on the built-in board, circulating water pump is fixed to be set up on the fixing base, the heat absorption bent pipe is located built-in board top, and the one end of heat absorption bent pipe is fixed with circulating water pump's delivery port and is established the connection, the inlet tube is located between second cooler bin and the circulating water pump, and the one end of inlet tube is fixed to be inserted and is located circulating water pump's inlet end.

Further, the hydraulic pressure meter is fixed to be set up in circulating water pump's inlet end, first cooler bin is fixed to be set up in built-in plate one side, all be equipped with the cooling port on a pair of relative lateral wall of first cooler bin, the other end of heat absorption bent pipe is airtight to be inserted and to be located on a pair of cooling port and pass first cooler bin, the second cooler bin is fixed to be set up on the built-in plate and to be located first cooler bin side, the adjacent both sides of second cooler bin are equipped with backward flow mouth and delivery port respectively, heat absorption bent pipe other end is fixed to be inserted and to be located in the backward flow mouth and communicate to inside the second cooler bin, the other end of inlet tube is fixed to be inserted and to be located in the delivery port and communicate to the inside of second.

Furthermore, a pair of symmetrical heat conduction ports is formed in the side portion of the first cooling box, a first box cover is arranged at the top of the first cooling box, one side of the first box cover is hinged to the first cooling box, a first handle is fixedly arranged on the other side of the top of the first box cover, a second box cover is arranged at the top of the second cooling box, one side of the second box cover is hinged to the second cooling box, and a second handle is fixedly arranged on the other side of the top of the second box cover.

Further, the relative lateral wall of looped netowrk cabinet all is equipped with the mounting hole, and is two sets of air-cooled subassembly structure size is the same, and is two sets of air-cooled subassembly is including fixed frame, fixed inside casing, fan and first ventilation net, fixed frame passes through the bolt fastening and sets up in corresponding the mounting hole, fixed inside casing passes through the bolt fastening and sets up in fixed frame, the fan rotates and sets up inside fixed inside casing, first ventilation net is fixed to be set up in the one end of fixed frame and to be located the looped netowrk cabinet inside, and is two sets of fan in the air-cooled subassembly is the setting of just being listed as in the horizontal direction.

Furthermore, the heat conduction assembly comprises two groups of heat conduction pipes, the two groups of heat conduction pipes are arranged in a one-to-one correspondence mode with the two groups of support frames, one end of each heat conduction pipe is fixedly inserted into the top of the corresponding support frame to be connected, and the other end of each heat conduction pipe is inserted into the first cooling box downwards along the inner wall of the ring main unit and through the heat conduction port.

Further, the relative both sides of first half of looped netowrk cabinet all are equipped with an air hole, every air downthehole second ventilation net that all is equipped with of passing, two sets of second ventilation nets and the equal fixed connection of looped netowrk cabinet, it is a pair of the carriage top all is equipped with a ventilation hole, every ventilation hole is corresponding with an air hole of passing on the looped netowrk cabinet.

Furthermore, one side of the ring main unit is provided with two groups of sliding doors, the two groups of sliding doors are hinged with the ring main unit, and one group of sliding doors is provided with a first pull groove.

Furthermore, the looped netowrk cabinet is equipped with the rectangular hole for the opposite side of sliding door, be equipped with the closing cap in the rectangular hole, the closing cap bottom is articulated with the looped netowrk cabinet and the closing cap top is equipped with the second kerve.

Furthermore, the controller is electrically connected with the circulating water pump and the pair of fans.

The invention has the beneficial effects that: a pair of supporting frames in the ring main unit are electrical equipment for fixedly installing a ring main power supply unit, a pair of sliding doors are opened by manually utilizing a first sliding groove, a controller is operated to open a circulating water pump switch, the cooling water prepared in a second cooling box enters a heat absorption bent pipe along a water inlet pipe, so that the cooling water in the heat absorption bent pipe absorbs heat in the ring main unit, the purpose of heat dissipation is achieved, when the temperature of the cooling water in the heat absorption bent pipe rises after heat absorption, the cooling water with the increased temperature passes through the first cooling box, the prepared cooling water in the first cooling box cools the heat absorption bent pipe, the cooling water in the heat absorption bent pipe enters the second cooling box again after cooling, the purpose of continuous circulating heat dissipation is achieved, then the controller is operated to open fans in two groups of air cooling assemblies, and the two groups of fans penetrate through the ring main unit and are arranged in a horizontal direction in an upright column, the air enters the ring main unit from one group of air cooling assemblies and is exhausted from the other group of air cooling assemblies, so that the hot air in the ring main unit is continuously replaced, the heat dissipation purpose is further achieved, the heat generated on the pair of supporting frames is transmitted into the first cooling box along the inner wall of the ring main unit by the two heat conduction pipes, the heat dissipation purpose is achieved for the pair of supporting frames, the heat in the ring main unit is further reduced, the second ventilation nets on the two sides of the ring main unit and the ventilation holes in the top of the pair of supporting frames in the ring main unit are used for guaranteeing smooth connection between the interior of the ring main unit and the outside air, the ring main unit can effectively dissipate heat in the ring main unit by opening the sliding door of the ring main unit and operating the controller, and the ring main unit is convenient to operate, safe and efficient, and the independent heat dissipation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments of the present invention are briefly described below.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a schematic view of an internal three-dimensional structure of the ring main unit according to the present invention;

FIG. 4 is a schematic perspective view of the water cooling mechanism of the present invention;

FIG. 5 is a schematic perspective view of an air-cooled assembly according to the present invention;

FIG. 6 is a schematic disassembled view of the air cooling assembly of the present invention;

FIG. 7 is a partially disassembled view of the heat transfer assembly of the present invention;

fig. 8 is a schematic partial disassembly view of the ring main unit according to the present invention;

FIG. 9 is a schematic partially disassembled view of the water cooling mechanism of the present invention;

FIG. 10 is an enlarged schematic view at A of FIG. 6;

in the figure: the ring main unit comprises a base 1, a ring main unit 2, a mounting hole 20, an air passing hole 21, a second ventilation net 22, a sliding door 23, a first pull groove 230, a rectangular hole 24, a sealing cover 25, a second pull groove 250, a built-in plate 3, a controller 4, a carrier 5, a support frame 50, a ventilation hole 500, a heat conduction assembly 6, a heat conduction pipe 60, a water cooling mechanism 7, a circulating water pump 70, a fixed seat 71, a heat absorption curved pipe 72, a water inlet pipe 73, a hydraulic gauge 74, a first cooling box 75, a cooling port 750, a heat conduction port 751, a first box cover 752, a first handle 753, a second cooling box 76, a second box cover 760, a second handle 761, a return port 762, a water outlet 763, an air cooling mechanism 8, an air cooling assembly 80, a fixed outer frame 800, a fixed inner frame 801, a fan 802 and a first ventilation.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 10, an autonomous heat dissipation device of a closed ring main unit comprises a base 1 and a ring main unit 2, and further comprises a built-in plate 3, a controller 4, a carrier 5, a heat conduction assembly 6, a water cooling mechanism 7 and an air cooling mechanism 8, wherein the ring main unit 2 is fixedly arranged at the top of the base 1, the built-in plate 3 is fixedly arranged at the bottom end inside the ring main unit 2, the controller 4 is arranged at one side of the inner wall of the ring main unit 2, the carrier 5 is arranged inside the ring main unit 2, the carrier 5 comprises two groups of support frames 50, the two groups of support frames 50 are symmetrically and fixedly arranged on the built-in plate 3, the heat conduction assembly 6 is arranged inside the ring main unit 2 and is fixedly connected with the tops of the two groups of support frames 50, the water cooling mechanism 7 is arranged inside the ring main unit 2 and is fixedly arranged on the built-in plate 3, the water cooling mechanism 7 is, the air cooling mechanism 8 comprises two sets of air cooling assemblies 80, and the two sets of air cooling assemblies 80 are arranged on opposite side walls of the ring main unit 2 and are fixedly connected with the ring main unit 2.

The water cooling mechanism 7 comprises a circulating water pump 70, a fixed seat 71, a heat absorption curved pipe 72, a water inlet pipe 73, a hydraulic pressure meter 74, a first cooling tank 75 and a second cooling tank 76, the fixed seat 71 is fixedly arranged on the built-in plate 3 through bolts, the circulating water pump 70 is fixedly arranged on the fixed seat 71, the heat absorption curved pipe 72 is positioned at the top of the built-in plate 3, one end of the heat absorption curved pipe 72 is fixedly inserted and connected with a water outlet 763 end of the circulating water pump 70, the water inlet pipe 73 is positioned between the second cooling tank 76 and the circulating water pump 70, one end of the water inlet pipe 73 is fixedly inserted and connected with a water inlet end of the circulating water pump 70, after the circulating water pump 70 is started, the cooling water prepared in the second cooling tank 76 enters the heat absorption curved pipe 72 along the water inlet pipe 73, and therefore the cooling water in the heat absorption curved pipe 72 absorbs heat in the ring main unit 2, thereby achieving the purpose of heat dissipation.

The hydraulic gauge 74 is fixedly arranged at the water inlet end of the circulating water pump 70, the first cooling box 75 is fixedly arranged at one side of the built-in plate 3, a pair of opposite side walls of the first cooling box 75 are respectively provided with a cooling port 750, the other end of the heat absorption curved pipe 72 is hermetically inserted on the pair of cooling ports 750 and penetrates through the first cooling box 75, the second cooling pipe is fixedly arranged on the built-in plate 3 and is positioned at the side of the first cooling box 75, the two adjacent sides of the second cooling box 76 are respectively provided with a return port 762 and a water outlet 763, the other end of the heat absorption curved pipe 72 is fixedly inserted in the return port 762 and is communicated with the inside of the second cooling box 76, the other end of the water inlet pipe 73 is fixedly inserted in the water outlet 763 and is communicated with the inside of the second cooling box 76, the hydraulic gauge 74 is used for detecting the pressure of cooling water entering from the water inlet pipe 73, the cooling ports 750 arranged at the two sides of the first cooling box 75 are used for cooling the cooling water through the heat absorption, the return opening 762 of the second cooling box 76 is a heat absorbing curved pipe 72 which is connected to and fro so as to achieve the purpose of cooling water circulation, and the water outlet 763 is a water inlet pipe 73.

The side of the first cooling box 75 is provided with a pair of symmetrical heat conduction ports 751, the top of the first cooling box 75 is provided with a first box cover 752, one side of the first box cover 752 is hinged with the first cooling box 75, the other side of the top of the first box cover 752 is fixedly provided with a first handle 753, the top of the second cooling box 76 is provided with a second box cover 760, one side of the second box cover 760 is hinged with the second cooling box 76, the other side of the top of the second box cover 760 is fixedly provided with a second handle 761, and the two symmetrical heat conduction ports 751 are used for communicating the two heat conduction pipes 60 with the first cooling box 75, the first handle 753 and the second handle 761, so that the first cooling box 75 and the second cooling box 76 can be opened conveniently to replace the cooling water therein.

The opposite side walls of the ring main unit 2 are provided with mounting holes 20, two groups of air-cooling assemblies 80 are identical in structure and size, each group of air-cooling assemblies 80 comprises a fixed outer frame 800, a fixed inner frame 801, a fan 802 and a first ventilation net 803, the fixed outer frame 800 is fixedly arranged in the corresponding mounting hole 20 through a bolt, the fixed inner frame 801 is fixedly arranged in the fixed outer frame 800 through a bolt, the fan 802 is rotatably arranged in the fixed inner frame 801, the first ventilation net 803 is fixedly arranged at one end of the fixed outer frame 800 and is positioned in the ring main unit 2, the fans 802 in the two groups of air-cooling assemblies 80 are arranged in a straight row in the horizontal direction, the two groups of mounting holes 20 are used for mounting the two groups of air-cooling assemblies 80, the fixed outer frame 800 provides a fixing carrier for the fixed inner frame 801, the fixed inner frame 801 provides a protection and fixing carrier for the fans 802, and the first ventilation net 803 is arranged to prevent external large, the two sets of fans 802 are arranged in an array to ensure that one draws air and one expels air.

The heat conducting assembly 6 comprises two groups of heat conducting pipes 60, the two groups of heat conducting pipes 60 are arranged in one-to-one correspondence with the two groups of support frames 50, one end of each group of heat conducting pipes 60 is fixedly inserted into and connected with the top of the corresponding support frame 50, the other end of each heat conducting pipe 60 is inserted into the first cooling box 75 downwards along the inner wall of the ring main unit 2 through a heat conducting port 751, heat generated by the two heat conducting pipes 60 on the pair of support frames 50 is transmitted into the first cooling box 75 along the inner wall of the ring main unit 2, therefore, the heat dissipation purpose of the pair of support frames 50 is achieved, and further, the heat inside the.

The relative both sides in the first half of looped netowrk cabinet 2 all are equipped with one and cross wind hole 21, every cross and all be equipped with second ventilation net 22 in the wind hole 21, two sets of second ventilation net 22 and the equal fixed connection of looped netowrk cabinet 2, it is a pair of support frame 50 top all is equipped with a ventilation hole 500, every ventilation hole 500 is corresponding with a wind hole 21 on the looped netowrk cabinet 2, and the second ventilation net 22 of looped netowrk cabinet 2 both sides and the ventilation hole 500 at the 50 tops of a pair of support frame in inside are for guaranteeing that 2 insides of looped netowrk cabinet are connected the unblocked with the outside air.

One side of looped netowrk cabinet 2 is equipped with two sets of sliding doors 23, and is two sets of sliding doors 23 is articulated with looped netowrk cabinet 2, and is a set of be equipped with first kerve 230 on the sliding doors 23, and the sliding doors 23 is opened to manual first kerve 230 that utilizes, and the setting of sliding doors 23 is convenient for observe the inside condition of looped netowrk cabinet 2 to change and maintain.

The other side of the ring main unit 2 relative to the sliding door 23 is provided with a rectangular hole 24, a sealing cover 25 is arranged in the rectangular hole 24, the bottom of the sealing cover 25 is hinged to the ring main unit 2, a second pull groove 250 is arranged at the top of the sealing cover 25, the second pull groove 250 is manually utilized to open the sealing cover 25, and therefore cooling water in the first cooling box 75 and the second cooling box 76 inside the ring main unit 2 can be replaced conveniently.

The controller 4, the circulating water pump 70 and the pair of fans 802 are electrically connected, the electrical connection operation is simple, convenience and rapidness are achieved, and the independent heat dissipation efficiency of the closed ring main unit 2 is improved.

The working principle is as follows: the pair of supporting frames 50 inside the ring main unit 2 is an electrical device for fixedly installing a ring network power supply unit, the first pull groove 230 is manually utilized to open the pair of pull doors 23, the controller 4 is operated to open the switch of the circulating water pump 70, under the influence of the suction force of the circulating water pump 70, the prepared cooling water in the second cooling box 76 enters the heat absorption curved pipe 72 along the water inlet pipe 73, so that the cooling water inside the heat absorption curved pipe 72 absorbs the heat inside the ring main unit 2, and thus the heat dissipation purpose is achieved, when the temperature of the cooling water inside the heat absorption curved pipe 72 is increased after heat absorption, the cooling water with the increased temperature passes through the first cooling box 75, so that the prepared cooling water inside the first cooling box 75 cools the heat absorption curved pipe 72, the cooling water inside the heat absorption curved pipe 72 enters the second cooling box 76 again after cooling, and thus the purpose of continuous circulating heat dissipation is achieved, then the controller 4 is operated to open the fans 802 in the two groups of air cooling assemblies 80, two sets of fans 802 link up the ring main unit 2 and are the setting of the horizontal direction in the same row, thereby the air gets into the ring main unit 2 inside from a set of air-cooled subassembly 80 and is discharged the hot-air by another set of air-cooled subassembly 80, thereby reach the inside hot-air of ring main unit 2 and constantly change, further reach radiating purpose, two heat pipes 60 spread into to the first cooler bin 75 along the inner wall of ring main unit 2 with the heat that produces on a pair of support frame 50, thereby reached the heat dissipation purpose to a pair of support frame 50, and then make the inside heat of ring main unit 2 reduce, the second ventilation net 22 of ring main unit 2 both sides and the ventilation hole 500 at the top of a pair of support frame 50 inside, be for guaranteeing that the inside of ring main unit 2 is unblocked with outside air connection.