阅读说明：本技术 一种负压蒸汽中深层地热与太阳能互补四联供装置 (Negative pressure steam middle-deep geothermal and solar complementary quadruple supply device ) 是由 孙铁柱 于 2020-08-06 设计创作，主要内容包括：本发明适用于中深层地热能利用与太阳能利用技术领域,提供了一种负压蒸汽中深层地热与太阳能互补四联供装置,主要包括太阳能集热器a、太阳能集热器b、介质泵a、介质泵b、汽液换热器、循环水泵、抽真空机和地下管道,当太阳能丰富时,采用太阳能进行集热供暖,发电等,此时地下管道周围的热量进行集热补充,使之前衰减的热量进行恢复,当太阳能集热管道系统和地热能集热管道系统压力达不到负压要求时,通过抽真空机进行抽真空,保证系统产生稳定的负压,并利用介质潜热去进行热交换,减小液体流量,从而减小了循环水泵能耗和管道管径,节约了投资成本。(The invention is suitable for the technical field of middle-deep geothermal energy utilization and solar energy utilization, and provides a negative pressure steam middle-deep geothermal energy and solar energy complementary quadruple supply device which mainly comprises a solar heat collector a, a solar heat collector b, a medium pump a, a medium pump b, a vapor-liquid heat exchanger, a circulating water pump, a vacuumizing machine and an underground pipeline, when the solar energy is rich, the solar energy is adopted for heat collection and heating, power generation and the like, at the moment, the heat around the underground pipeline is subjected to heat collection and supplement, so that the previously attenuated heat is recovered, when the pressure of the solar heat collecting pipeline system and the geothermal energy heat collecting pipeline system does not meet the negative pressure requirement, the vacuum-pumping machine is used for vacuumizing, so that the system is ensured to generate stable negative pressure, latent heat of a medium is utilized for heat exchange, the liquid flow is reduced, the energy consumption of the circulating water pump and the pipe diameter of the pipeline are reduced, and the investment cost is saved.)

1. A negative pressure steam middle-deep geothermal energy and solar energy complementary quadruple supply device comprises a solar energy utilization system and a middle-deep geothermal energy utilization system, and is characterized in that: mainly comprises a solar heat collector a (1), a solar heat collector b (2), a medium pump a (3), a medium pump b (4), a vapor-liquid heat exchanger (5), a circulating water pump (6), a vacuum extractor (36) and an underground pipeline, the solar heat collector a (1) and the solar heat collector b (2) are connected with the medium pump a (3) and the medium pump b (4) through pipelines, the vapor-liquid heat exchanger (5) is positioned at the right sides of the medium pump a (3) and the medium pump b (4), and is communicated with the medium pump a (3) and the medium pump b (4) through pipelines, the circulating water pump (6) is communicated with the gas-liquid heat exchanger (5), the number of the vacuumizing machines (36) is multiple, and the vacuumizing machines (36) are respectively arranged on the solar heat collector a (1), the solar heat collector b (2) and the underground pipeline.

2. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: the solar energy utilization system adopts negative pressure in pipelines of the medium and deep geothermal systems, and is used for utilizing latent heat of a medium to carry out heat exchange so as to reduce the liquid flow.

3. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: underground piping includes heat preservation section a (14), heat preservation section b (15), heat transfer section a (16), heat transfer section b (17), stiff end a (18), stiff end b (19), heat preservation section a (14), heat preservation section b (15) with medium pump a (3) with medium pump b (4) are connected, heat transfer section a (16), heat transfer section b (17) cover with underground piping's surface, stiff end a (18), stiff end b (19) respectively with underground piping's both ends fixed connection.

4. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: underground piping inner structure includes sleeve pipe a (8), sleeve pipe b (9), liquid backward flow cavity a (10), liquid backward flow cavity b (11), steam upflow cavity a (12), steam upflow cavity b (13) sleeve pipe a (8), sleeve pipe b (9) respectively with medium pump a (3) with medium pump b (4) are connected, set up in reflux cavity a (10) and liquid backward flow cavity b (11) steam upflow cavity a (12) and steam upflow cavity b (13) are inboard.

5. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: and the water inlet and outlet pipelines of the solar thermal collector a (1) and the solar thermal collector b (2) are respectively provided with a valve g (30), a valve h (31), a valve j (32) and a valve k (33).

6. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: and a water inlet pipe and a water outlet pipe of the geothermal heat collection pipe system are respectively provided with a valve e (28), a valve f (29), a valve L (34) and a valve m (35).

7. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: the vapor-liquid heat exchanger (5) is positioned between the medium pump a (3) and the medium pump b (4) and the circulating water pump (6) and is used for exchanging heat of fluid in the pipeline.

8. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 1, wherein: the vacuum-pumping machine (36) is used for pumping vacuum for the solar heat collecting system and the geothermal heat collecting pipeline system.

9. The negative pressure steam middle-deep geothermal and solar complementary quadruple supply device of claim 3, wherein: the heat exchange section a (16) and the heat exchange section b (17) are horizontally arranged and extend to form an inverted T shape with the sleeve a (8) and the sleeve b (9).

Technical Field

The invention belongs to the technical field of utilization of geothermal energy and solar energy in a middle and deep layer, and particularly relates to a negative pressure steam middle and deep layer geothermal energy and solar energy complementary quadruple supply device.

Background

In social development, environmental problems are highlighted continuously, non-renewable energy sources are reduced gradually, and in order to relieve the energy crisis, mankind is developing new energy sources continuously, and the new energy sources are regarded as clean renewable energy sources, namely deep geothermal energy, and are continuously paid attention by the nation.

At present, the technology of utilizing the geothermal energy in the middle and deep layers is a vertical well technology, the heat exchange area is limited, and the medium for exchanging heat with the underground is only sensible heat exchange, so that the pipe diameter is large and the initial investment is high.

Disclosure of Invention

The invention provides a negative pressure steam middle-deep geothermal and solar complementary quadruple supply device, aiming at solving the problems that the prior middle-deep geothermal technology is a vertical well technology, the heat exchange area is limited, and the medium exchanging heat with the underground is only sensible heat exchange, so that the pipe diameter is large and the initial investment is high.

The invention is realized in such a way that a negative pressure steam middle-deep geothermal and solar complementary four-combined supply device comprises a solar utilization system and a middle-deep geothermal utilization system, and mainly comprises a solar heat collector a, a solar heat collector b, a medium pump a, a medium pump b, a vapor-liquid heat exchanger, a circulating water pump, a vacuumizing machine and an underground pipeline, the solar heat collector a and the solar heat collector b are connected with the medium pump a and the medium pump b through pipelines, the vapor-liquid heat exchanger is positioned on the right side of the medium pump a and the medium pump b, and is communicated with the medium pump a and the medium pump b through pipelines, the circulating water pump is communicated with the gas-liquid heat exchanger, the number of the vacuumizing machines is multiple, and the vacuumizing machines are respectively arranged on the solar heat collector a, the solar heat collector b and the underground pipeline.

Preferably, negative pressure is adopted in the pipelines of the solar energy utilization system and the medium and deep geothermal system, and latent heat of a medium is utilized for heat exchange, so that the liquid flow is reduced.

Preferably, the underground pipeline includes heat preservation section an, heat preservation section b, heat transfer section a, heat transfer section b, stiff end a, stiff end b, heat preservation section an, heat preservation section b with medium pump a with medium pump b connects, heat transfer section a, heat transfer section b cover with the surface of underground pipeline, stiff end a, stiff end b respectively with the both ends fixed connection of underground pipeline.

Preferably, the internal structure of the underground pipeline comprises a sleeve a, a sleeve b, a liquid backflow cavity a, a liquid backflow cavity b, a steam upstream cavity a and a steam upstream cavity b, wherein the sleeve a and the sleeve b are respectively connected with the medium pump a and the medium pump b, and the backflow cavity a and the liquid backflow cavity b are arranged inside the steam upstream cavity a and the steam upstream cavity b.

Preferably, the water inlet and outlet pipelines of the solar thermal collector a and the solar thermal collector b are respectively provided with a valve g, a valve h, a valve j and a valve k.

Preferably, the water inlet pipe and the water outlet pipe of the geothermal heat collecting pipe system are respectively provided with a valve e, a valve f, a valve L and a valve m.

Preferably, the vapor-liquid heat exchanger is located between the medium pump a and the circulating water pump and between the medium pump b and the circulating water pump, and is used for exchanging heat for fluid inside the pipeline.

Preferably, the vacuum extractor is used for vacuumizing a solar heat collecting system and a geothermal heat collecting pipe system.

Preferably, the heat exchange section a and the heat exchange section b are horizontally arranged and extend to form an inverted T shape with the sleeve a and the sleeve b.

Compared with the prior art, the invention has the beneficial effects that: according to the negative-pressure steam middle-deep geothermal and solar complementary quadruple supply device, the solar heat collector a, the solar heat collector b, the vapor-liquid heat exchanger, the circulating water pump, the vacuumizing machine and the underground pipeline are arranged, when solar energy is rich, solar energy is adopted for heat collection and heating, power generation and the like, heat around the underground pipeline is subjected to heat collection and supplementation at the moment, so that the previously attenuated heat is recovered, when the pressure of the solar heat collection pipeline system and the geothermal energy collection pipeline system cannot meet the negative pressure requirement, the vacuumizing machine is used for vacuumizing, the system is ensured to generate stable negative pressure, medium latent heat is used for heat exchange, and the liquid flow is reduced, so that the energy consumption of the circulating water pump and the pipeline diameter are reduced, and the investment cost is saved.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic diagram of a solar energy utilization system according to the present invention;

FIG. 3 is a schematic structural view of a system for geothermal heat utilization in a medium-deep layer according to the present invention;

in the figure: 1. a solar heat collector a; 2. a solar heat collector b; 3. a medium pump a; 4. a medium pump b; 5. a vapor-liquid heat exchanger; 6. a water circulating pump; 7. a user; 8. a sleeve a; 9. a sleeve b; 10. a liquid reflux cavity a; 11. a liquid reflux cavity b; 12. a steam backflow cavity a; 13. a steam backflow cavity b; 14. a heat preservation section a; 15. a heat preservation section b; 16. a heat exchange section a; 17. a heat exchange section b; 18. a fixed end a; 19. a fixed end b; 20. an ORC generator set; 21. an absorption chiller unit; 22. the user living hot water; 23. a heating life hot water circulating pump; 24. a valve a; 25. a valve b; 26. a valve c; 27. a valve d; 28. a valve e; 29. a valve f; 30. a valve g; 31. a valve h; 32. a valve j; 33. a valve k; 34. a valve L; 35. a valve m; 36. and (4) vacuumizing machine.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution: a negative-pressure steam middle-deep geothermal and solar complementary four-combined-supply device comprises a solar utilization system and a middle-deep geothermal utilization system, and mainly comprises a solar collector a1, a solar collector b2, a medium pump a3, a medium pump b4, a vapor-liquid heat exchanger 5, a circulating water pump 6, a vacuumizing machine 36 and an underground pipeline, wherein the solar collector a1 and the solar collector b2 are connected with the medium pump a3 and the medium pump b4 through pipelines, the vapor-liquid heat exchanger 5 is positioned on the right side of the medium pump a3 and the medium pump b4 and communicated with the medium pump a3 and the medium pump b4 through pipelines, the circulating water pump 6 is communicated with the gas-liquid heat exchanger 5, the vacuumizing machine 36 is multiple, and the vacuumizing machines 36 are respectively arranged on the solar collector a1, the solar collector b2 and the underground pipeline.

In this embodiment, the underground pipe adopts symmetrical structure and two inverted T type structures, the left and right sides are respectively beaten the horizontal well of certain length to increase heat transfer area, increase single well heat absorption heat transmission volume, when solar energy is abundant, adopt solar energy to carry out heat collection heating, generate electricity, supply life hot water, the cooling etc., can let the heat around heat transfer section a16 heat transfer section b17 carry out the heat collection replenishment this moment, make the heat of decay before making resume, when solar energy collection pipe-line system and geothermal energy collection pipe-line system pressure can not reach the negative pressure requirement, need evacuation machine 36 to carry out the evacuation, guarantee that the system has the negative pressure system of pressure stability, thereby make the medium latent heat carry out the heat exchange, liquid flow has been reduced, the pipe diameter has been reduced, thereby reduce initial cost.

In this embodiment, in use, the underground pipe is pumped to a desired negative pressure value by the vacuum pump 36 according to temperature requirements, for example, 90 degrees can be extracted according to exploration, and if the medium is water, the system pressure is 0.07 MPa. The same is true of solar energy collection systems; the geothermal energy extraction and circulation, under the action of a medium pump a3 and a medium pump b4, liquid medium condensed from a vapor-liquid heat exchanger 5 enters a heat exchange section a16 and a heat exchange section b17 for heat exchange through a liquid reflux cavity a10 and a liquid reflux cavity b11, the temperature of the liquid medium is raised after heat absorption, the liquid medium is changed into steam, the liquid medium enters a conveying pipeline through a steam upstream cavity a12 and a steam upstream cavity b13, the liquid medium enters the vapor-liquid heat exchanger 5 for heat exchange with water of a user 7, and the liquid medium enters an underground pipeline for heat exchange after condensation so as to circulate; in order to solve the problem that the heat of geothermal energy is extracted too fast, the underground heat energy cannot be supplemented in time, the temperature of the geothermal energy is buffered to rise again, a solar heat collecting system is added, the solar heat collecting system runs when sunlight is sufficient, and the flow is as follows: liquid media condensed from the vapor-liquid heat exchanger 5 respectively enter the solar heat collector a1 and the solar heat collector b2 through pipelines to absorb solar heat under the action of the medium pump a3 and the medium pump b4 to become steam, then enter the vapor-liquid heat exchanger 5 through pipelines to exchange heat with water of a user 7, and enter the solar heat collector after condensation to circulate; and (3) power generation circulation: the water from the ORC generator set 20 enters the vapor-liquid heat exchanger 5, the heat absorption and heat exchange temperature is raised to be over 80 ℃, then the water enters the ORC generator set 20 under the action of the circulating water pump 6 to heat the ORC generator set 20, the ORC generator set 20 is pushed to generate electricity, and the hot water after heat exchange returns to the vapor-liquid heat exchanger 5 to circulate in sequence; the water that comes out from absorption refrigeration unit 21 gets into vapour liquid heat exchanger 5, carries out heat absorption heat transfer temperature and rises to more than 80 degrees, then gets into absorption refrigeration unit 21 under circulating water pump 6's effect, promotes the unit internal loop and refrigerates, and vapor liquid heat exchanger 5 is got back to again to hot water after the heat transfer, circulates in proper order, and heating and life hot water circulate: hot water returned from a heating user and the supplemented water of tap water enter the vapor-liquid heat exchanger 5, heat absorption and heat exchange are carried out, the temperature is raised to the required heating temperature, for example, 40 ℃, and then the hot water is sent to the user 7 for domestic hot water and heating under the action of the domestic hot water circulation water pump 23 for heating.

Furthermore, negative pressure is adopted in the pipelines of the solar energy utilization system and the medium-deep geothermal system, and latent heat of the medium is utilized to carry out heat exchange, so that the liquid flow is reduced.

In the embodiment, negative pressure is adopted in the solar energy utilization system and the pipeline of the medium-deep geothermal system, so that latent heat of a medium can be utilized for heat exchange, the liquid flow is reduced, the energy consumption of the circulating water pump 6 is reduced, the pipe diameter of the pipeline is reduced, and the investment cost is saved.

Furthermore, the underground pipeline comprises a heat preservation section a14, a heat preservation section b15, a heat exchange section a16, a heat exchange section b17, a fixed end a18 and a fixed end b19, wherein the heat preservation section a14 and the heat preservation section b15 are connected with a medium pump a3 and a medium pump b4, the heat exchange section a16 and the heat exchange section b17 cover the outer surface of the underground pipeline, and the fixed end a18 and the fixed end b19 are respectively fixedly connected with two ends of the underground pipeline.

In this embodiment, an underground pipe is provided with a heat preservation section a14 and a heat preservation section b15 for preserving heat of fluid inside the underground pipe, a heat exchange section a16 and a heat exchange section b17 for exchanging heat of fluid inside the underground pipe, and a fixed end a18 and a fixed end b19 for fixing both ends of the underground pipe.

Further, the underground pipeline internal structure comprises a sleeve a8, a sleeve b9, a liquid backflow cavity a10, a liquid backflow cavity b11, a steam upstream cavity a12, a steam upstream cavity b13, a sleeve a8 and a sleeve b9 which are respectively connected with a medium pump a3 and a medium pump b4, wherein the backflow cavity a10 and the liquid backflow cavity b11 are arranged inside the steam upstream cavity a12 and the steam upstream cavity b 13.

In this embodiment, a sleeve a8 and a sleeve b9 are provided for protecting and supporting an underground pipeline, and preventing the underground pipeline from being damaged due to overlarge external pressure, and a liquid backflow cavity a10, a liquid backflow cavity b11, a steam upstream cavity a12 and a steam upstream cavity b13 are provided to enable heat exchange to be performed between the liquid backflow cavity a10 and the liquid backflow cavity b11 as well as between the steam upstream cavity a12 and the steam upstream cavity b 13.

Furthermore, a valve g30, a valve h31, a valve j32 and a valve k33 are respectively arranged on the water inlet and outlet pipelines of the solar heat collector a1 and the solar heat collector b 2.

In this embodiment, a plurality of valves are provided in the water inlet and outlet pipes of the solar collector a1 and the solar collector b2 to control the flow conditions of the fluid in the solar collector a1 and the solar collector.

Furthermore, a water inlet pipe and a water outlet pipe of the geothermal heat collecting pipe system are respectively provided with a valve e28, a valve f29, a valve L34 and a valve m 35.

In the present embodiment, a valve e28, a valve f29, a valve L34 and a valve m35 are respectively arranged on the water inlet pipe and the water outlet pipe of the geothermal heat collecting pipe system, and are used for controlling the circulation condition of the fluid inside the water inlet pipe and the water outlet pipe of the geothermal heat collecting pipe system.

Further, the vapor-liquid heat exchanger 5 is located between the medium pump a3 and the medium pump b4 and the circulating water pump 6, and is used for exchanging heat of the fluid inside the pipeline.

In the present embodiment, the vapor-liquid heat exchanger 5 is provided to allow the fluid inside the underground piping to pass through the vapor-liquid swivel to perform heat conversion.

Further, the vacuum extractor 36 is used for evacuating the solar heat collection system and the geothermal heat collection pipe system.

In the present embodiment, the vacuum extractor 36 is used for vacuum-pumping the solar heat collecting system and the geothermal heat collecting pipe system, and is used for maintaining the system at a required negative pressure, so as to utilize latent heat of the medium to perform heat exchange, reduce the liquid flow, reduce the energy consumption of the circulating water pump and the pipe diameter of the pipe, and save the investment cost.

Further, heat exchange section a16 and heat exchange section b17 extend in a horizontal arrangement in an inverted T-shape with sleeves a8 and b 9.

In this embodiment, heat exchange section a16 and heat exchange section b17 are horizontally arranged and extended and sleeve a8 and sleeve b9 are inverted T-shaped, so that heat exchange is facilitated, and heat exchange section a16 and heat exchange section b17 can be extended in length, so that the heat exchange section can adapt to different terrains, and the use of user 7 is more convenient.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.