CN216790570U - Geothermal water combined cooling heating and power system - Google Patents
Geothermal water combined cooling heating and power system Download PDFInfo
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- CN216790570U CN216790570U CN202220252658.1U CN202220252658U CN216790570U CN 216790570 U CN216790570 U CN 216790570U CN 202220252658 U CN202220252658 U CN 202220252658U CN 216790570 U CN216790570 U CN 216790570U
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Abstract
A geothermal water combined cooling heating and power system comprises an exploitation well, a first heat exchanger, a recharge well, a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression cooling device; the organic Rankine power generation and heating device and the organic Rankine expansion compression refrigerating device share the first heat exchanger, the first heat exchanger comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the first water inlet is communicated with the production well, and the first water outlet of the first heat exchanger is respectively communicated with the geothermal water direct supply device and the recharge well; the heat pump heating device is communicated with the geothermal water direct supply device. The geothermal water combined cooling heating and power system integrates a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression refrigerating device to form a combined supply system, can realize heating and power generation in winter and refrigeration in summer, has multiple purposes and reduces investment.
Description
Technical Field
The utility model belongs to the technical field of geothermal wells, and particularly relates to a geothermal water combined cooling heating power supply system.
Background
Northern areas have heating demand in the season and refrigeration demand in the summer, and many of these areas have abundant geothermal resources. At present, the geothermal resource utilization mode of the area mainly adopts heating, the area with proper water quality also has hot spring bathing, the energy use function is single, the utilization rate of geothermal resources is low, and the energy and resource attributes of geothermal resources are not well utilized. Therefore, a combined cooling heating and power system for geothermal water is needed to improve the utilization rate of geothermal resources.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a geothermal water combined cooling heating and power system, which improves the utilization rate of geothermal resources.
In order to achieve the purpose, the utility model provides a geothermal water combined cooling heating and power system, which comprises an exploitation well, a first heat exchanger, a recharging well, a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression refrigerating device, wherein the exploitation well is connected with the first heat exchanger; wherein the content of the first and second substances,
the organic Rankine power generation and heating device and the organic Rankine expansion compression cooling device share a first heat exchanger, the first heat exchanger comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the first water inlet is communicated with the production well, and the first water outlet of the first heat exchanger is communicated with the geothermal water direct supply device and the recharge well respectively;
the heat pump heating device is communicated with the geothermal water direct supply device.
Preferably, the first water outlet of the first heat exchanger is communicated with the recharge well through a bypass pipe.
Preferably, the geothermal water direct supply device comprises a second heat exchanger, a water supply pipe and a water return pipe, wherein the second heat exchanger comprises a third water inlet, a third water outlet, a fourth water inlet and a fourth water outlet;
the third water inlet of the second heat exchanger is communicated with the first water outlet of the first heat exchanger, and the third water outlet is communicated with the heat pump heating device;
the water supply pipe is respectively communicated with the fourth water outlet and the user water inlet end;
the water return pipe is respectively communicated with the fourth water inlet and the user water return end.
Preferably, the heat pump heating device comprises a third heat exchanger and a heat pump unit, the third heat exchanger comprises a fifth water inlet, a fifth water outlet, a sixth water inlet and a sixth water outlet, the fifth water inlet of the third heat exchanger is communicated with the third water outlet of the second heat exchanger, the fifth water outlet is communicated with the recharge well, the sixth water inlet is communicated with a first outlet of the heat pump unit, the sixth water outlet is communicated with a first inlet of the heat pump unit, and the heat pump unit is used for supplying geothermal water provided by the third heat exchanger to a user after heat exchange and recovering the geothermal water.
Preferably, the first heat exchanger, the second heat exchanger and the third heat exchanger are all plate heat exchangers.
Preferably, the organic Rankine power generation and heating device further comprises a generator, and an expansion machine, a condenser, a working medium pump and a generator which are connected in sequence;
the generator is in driving connection with the expander;
the second water outlet of the first heat exchanger is communicated with the first inlet of the generator, the first outlet of the generator is communicated with the expander, the outlet of the working medium pump is communicated with the second inlet of the generator, the second outlet of the generator is communicated with the second water inlet of the first heat exchanger, and the expander drives the generator to operate.
Preferably, the generator is connected with the expander through a first flexible coupling, and the expander is used for driving the generator to operate and generate power.
Preferably, the organic Rankine expansion compression refrigeration device and the organic Rankine power generation and heating device share the first heat exchanger, the generator, the expander, the condenser and the working medium pump, and the organic Rankine expansion compression refrigeration device further comprises a compressor, a throttle valve and an evaporator;
the expander with the compressor drive is connected, the choke valve the evaporimeter with the compressor sets gradually, just the choke valve with the condenser intercommunication, the water inlet and the delivery port of compressor respectively with the export of evaporimeter with the import intercommunication of condenser.
Preferably, the expander is connected with the compressor through a second flexible coupling, and the expander is used for driving the compressor.
The utility model relates to a geothermal water combined cooling heating and power system, which has the beneficial effects that: the geothermal water from the production well is subjected to pre-heat exchange through the first heat exchanger, and then is used for heating through a geothermal water direct supply device and a heat pump heating device, an organic Rankine power generation and heating device is used for heating and power generation of a user in winter, and an organic Rankine expansion compression refrigerating device is used for refrigerating the user in summer; the system integrates a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression refrigerating device to form a triple supply system, so that heating and power generation in winter and refrigeration in summer can be realized, one machine has multiple purposes, and investment is reduced.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic diagram of a geothermal water combined cooling heating and power system according to an exemplary embodiment of the present invention.
Description of reference numerals:
1. a production well is produced; 2. a first heat exchanger; 3. a second heat exchanger; 4. a water supply pipe; 5. a water return pipe; 6. a heat pump unit; 7. recharging the well; 8. a third heat exchanger; 9. a bypass pipe; 10. an evaporator; 11. a throttle valve; 12. a condenser; 13. a working medium pump; 14. a generator; 15. a generator; 16. an expander; 17. a compressor; 18. a first flexible coupling; 19. a second flexible coupling.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In order to solve the problems in the prior art, the utility model provides a geothermal water combined cooling heating and power system, which comprises a production well 1, a first heat exchanger 2, a recharge well 7, a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression refrigerating device, as shown in FIG. 1; wherein the content of the first and second substances,
the organic Rankine power generation and heating device and the organic Rankine expansion compression refrigerating device share the first heat exchanger 2, the first heat exchanger 2 comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the first water inlet is communicated with the production well 1, and the first water outlet of the first heat exchanger 2 is respectively communicated with the geothermal water direct supply device and the recharge well 7;
the heat pump heating device is communicated with the geothermal water direct supply device.
The organic Rankine power generation and heating device and the organic Rankine expansion compression refrigerating device are communicated into a closed cycle through a second water inlet and a second water outlet of the first heat exchanger 2 respectively and are used for heating power generation in winter and refrigerating in summer respectively.
The utility model relates to a geothermal water combined cooling heating and power system, which pre-exchanges heat for geothermal water from an exploitation well 1 through a first heat exchanger 2, and then the geothermal water is used for heating through a geothermal water direct supply device and a heat pump heating device, an organic Rankine power generation and heating device is used for heating and power generation of a user in winter, and an organic Rankine expansion compression refrigerating device is used for refrigerating the user in summer; the system integrates a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression refrigerating device to form a triple supply system, and can realize heating and power generation in winter and refrigeration in summer through one set of system, so that the system has multiple purposes, reduces investment and improves the utilization rate of geothermal resources.
The first water outlet of the first heat exchanger 2 is communicated with the recharge well 7 through a bypass pipe 9.
The geothermal water direct supply device comprises a second heat exchanger 3, a water supply pipe 4 and a water return pipe 5, wherein the second heat exchanger 3 comprises a third water inlet, a third water outlet, a fourth water inlet and a fourth water outlet;
a third water inlet of the second heat exchanger 3 is communicated with a first water outlet of the first heat exchanger 2, and a third water outlet is communicated with a heat pump heating device;
the water supply pipe 4 is respectively communicated with the fourth water outlet and the user water inlet end;
the water return pipe 5 is respectively communicated with the fourth water inlet and the user water return end.
The exploitation well 1 is connected with the first heat exchanger 2 through a pipeline, geothermal water which is discharged from the first heat exchanger 2 is divided into two paths, one path of geothermal water is connected with the second heat exchanger 3, and therefore the geothermal water directly supplies heat to a user, the other path of geothermal water is connected with the recharge well 7 through the bypass pipe 9, and therefore the geothermal water is recharged after heat exchange, and the temperature difference of a geothermal water source is reduced.
The heat pump heating device comprises a third heat exchanger 8 and a heat pump unit 6, the third heat exchanger 8 comprises a fifth water inlet, a fifth water outlet, a sixth water inlet and a sixth water outlet, the fifth water inlet of the third heat exchanger 8 is communicated with the third water outlet of the second heat exchanger 3, the fifth water outlet is communicated with a recharge well 7, the sixth water inlet is communicated with a first outlet of the heat pump unit 6, the sixth water outlet is communicated with a first inlet of the heat pump unit 6, and the heat pump unit 6 is used for supplying geothermal water provided by the third heat exchanger 8 to a user after heat exchange and recovering the geothermal water.
The heat pump unit 6 is used for supplying geothermal water provided by the third heat exchanger 8 to a user after heat exchange and recovering the geothermal water to form circulating water, and the third heat exchanger 8 transfers the circulating water recovered by the heat pump unit 6 to the recharging well 7 after heat exchange.
The heat pump unit 6 is a heat pump type integral water-air type or water-water type air conditioning device which takes water as a heat source and can perform refrigeration/heating circulation, uses water as a heat source during heating and takes water as a heat extraction source during refrigeration, supplies heat to users through the heat pump unit 6, and cannot cause pollution of an original water source. Meanwhile, the heating saves boiler room systems such as coal burning and the like, and the combustion process is avoided, so that the smoke pollution is avoided. Heat pump set 6 can adopt current product, and concrete structure is no longer repeated.
The first heat exchanger 2, the second heat exchanger 3 and the third heat exchanger 8 are all plate heat exchangers.
The organic Rankine power generation and heating device further comprises a generator 14, and an expansion machine 16, a condenser 12, a working medium pump 13 and a generator 15 which are sequentially arranged;
the second water outlet of the first heat exchanger 2 is communicated with the first inlet of the generator 15, the first outlet of the generator 15 is communicated with the expander 16, the outlet of the working medium pump 13 is communicated with the second inlet of the generator 15, the second outlet of the generator 15 is communicated with the second water inlet of the first heat exchanger 2, and the expander 16 drives the generator 14 to operate.
The power generation device comprises a generator 14, the generator 14 is connected with an expansion machine 16 through a first flexible coupling 18, and the expansion machine 16 is used for driving the generator 14 to generate power.
In the organic Rankine power generation and heating device, geothermal water is preheated in a first heat exchanger 2, is heated to a set evaporation temperature, is conveyed to a generator 15 to be heated and evaporated to be in a saturated vapor state, then enters an expansion machine 16 to do work, is condensed in a condenser 12 after being done with work, is conveyed back to the generator 15 by increasing the pressure through a working medium pump 13 and returns to the first heat exchanger 2, and a closed organic Rankine cycle is completed.
The expander 16 is a screw expander, geothermal water, namely, working medium enters the expander 16 to do work externally, the expander 16 rotates to drive the generator 14 to run to generate power, meanwhile, the working medium enters the condenser 12 to release heat at a constant pressure and is condensed into liquid, the liquid is output under pressure in the working medium pump 13, and the liquid is returned to the first heat exchanger 2 through the generator 15 to exchange heat and then is output to the geothermal water direct supply device to supply heat or is recharged to the recharging well 7. The condenser 12 of the device is cooled by heating water, so that the condensation heat is effectively recovered, the system efficiency is improved, heating and power generation in winter can be realized, and the utilization rate of geothermal resources is improved.
The organic Rankine expansion compression refrigerating device and the organic Rankine power generation and heating device share the first heat exchanger 2, the generator 15, the expander 16, the condenser 12 and the working medium pump 13, and the organic Rankine expansion compression refrigerating device further comprises a compressor 17, a throttle valve 11 and an evaporator 10;
the expansion machine 16 is in driving connection with the compressor 17, the throttle valve 11, the evaporator 10 and the compressor 17 are sequentially arranged, the throttle valve 11 is communicated with the condenser 12, and a water inlet and a water outlet of the compressor 17 are respectively communicated with an outlet of the evaporator 10 and an inlet of the condenser 12.
The organic Rankine power generation and heating device and the organic Rankine expansion compression and refrigeration device are both organic Rankine cycle systems and share one set of organic Rankine cycle device, and the organic Rankine cycle device is the prior art and is not described in detail again according to specific principles. Unlike the orc power generation and heating device, in the orc expansion-compression refrigeration device, the rotation of the expander 16 drives the compressor 17 to operate for cooling, meanwhile, the liquid geothermal water condensed by the condenser 12 can enter the evaporator 10 through the throttle valve 11 to be heated and evaporated into a gas state, and then enters the compressor 17 to provide gas, and the water formed in the cooling process of the compressor 17 returns to the condenser 12 to be recovered. The organic Rankine expansion compression refrigerating device and the organic Rankine power generation and heating device are not used at the same time, and refrigeration is carried out in summer and heating and power generation are carried out in winter respectively, so that geothermal resources can be effectively utilized.
The expander 16 is connected with the compressor 17 through a second flexible coupling 19, and the expander 16 is used for driving the compressor 17 to operate so as to realize refrigeration.
In the application, one set of system can realize heating and power generation in winter and refrigeration in summer, so that one machine has multiple purposes and investment is reduced; the condenser 12 is cooled by heating water, so that the condensation heat is effectively recovered, and the system efficiency is improved; this application trades direct heating (the second heat exchanger 3 among the geothermal water direct supply device promptly) through the board respectively, retrieves the condensation heat heating among the organic rankine cycle device and heats through heat pump set 6, has reduced geothermal water temperature of recharging, has improved entire system's operating efficiency and economic nature.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (9)
1. The combined cooling, heating and power system for geothermal water is characterized by comprising an exploitation well (1), a recharge well (7), a geothermal water direct supply device, a heat pump heating device, an organic Rankine power generation and heating device and an organic Rankine expansion compression cooling device; wherein the content of the first and second substances,
the organic Rankine power generation and heating device and the organic Rankine expansion compression cooling device share a first heat exchanger (2), the first heat exchanger (2) comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the first water inlet is communicated with the production well (1), and the first water outlet of the first heat exchanger (2) is communicated with the geothermal water direct supply device and the recharge well (7) respectively;
the heat pump heating device is communicated with the geothermal water direct supply device.
2. The combined geothermal water, cooling heating and power system as claimed in claim 1, wherein the first water outlet of the first heat exchanger (2) is communicated with the recharge well (7) through a bypass pipe (9).
3. The combined cooling, heating and power system as claimed in claim 1, wherein the geothermal water direct supply device comprises a second heat exchanger (3), a water supply pipe (4) and a water return pipe (5), the second heat exchanger (3) comprises a third water inlet, a third water outlet, a fourth water inlet and a fourth water outlet;
the third water inlet of the second heat exchanger (3) is communicated with the first water outlet of the first heat exchanger (2), and the third water outlet is communicated with the heat pump heating device;
the water supply pipe (4) is respectively communicated with the fourth water outlet and a user water inlet end;
the water return pipe (5) is respectively communicated with the fourth water inlet and the user water return end.
4. The combined geothermal water, cooling heat and power supply system as claimed in claim 3, wherein the heat pump heating device comprises a third heat exchanger (8) and a heat pump unit (6), the third heat exchanger (8) comprises a fifth water inlet, a fifth water outlet, a sixth water inlet and a sixth water outlet, the fifth water inlet of the third heat exchanger (8) is communicated with the third water outlet of the second heat exchanger (3), the fifth water outlet is communicated with the recharge well (7), the sixth water inlet is communicated with a first outlet of the heat pump unit (6), the sixth water outlet is communicated with a first inlet of the heat pump unit (6), and the heat pump unit (6) is used for supplying geothermal water provided by the third heat exchanger (8) to a user after heat exchange and recovering the geothermal water.
5. The combined geothermal water, cooling heating and power system as claimed in claim 4, wherein the first heat exchanger (2), the second heat exchanger (3) and the third heat exchanger (8) are plate heat exchangers.
6. The combined geothermal water, cooling heating and power system as claimed in claim 2, wherein the organic Rankine power generation and heating device further comprises a generator (14), and an expander (16), a condenser (12), a working medium pump (13) and a generator (15) which are connected in sequence;
the second water outlet of the first heat exchanger (2) is communicated with a first inlet of the generator (15), a first outlet of the generator (15) is communicated with the expansion machine (16), an outlet of the working medium pump (13) is communicated with a second inlet of the generator (15), a second outlet of the generator (15) is communicated with a second water inlet of the first heat exchanger (2), and the expansion machine (16) drives the generator (14) to operate.
7. The combined geothermal water, cooling heating and power supply system as claimed in claim 6, wherein the generator (14) and the expander (16) are connected through a first flexible coupling (18), and the expander (16) is used for driving the generator (14) to operate and generate power.
8. The combined geothermal water, cooling heating and power system according to claim 6, wherein the organic Rankine expansion and compression refrigeration device shares the first heat exchanger (2), the generator (15), the expander (16), the condenser (12), the working medium pump (13) with the organic Rankine power generation and heating device, and further comprises a compressor (17), a throttle valve (11), and an evaporator (10);
expander (16) with compressor (17) drive connection, choke valve (11) evaporimeter (10) with compressor (17) set gradually, just choke valve (11) with condenser (12) intercommunication, the water inlet and the delivery port of compressor (17) respectively with the export of evaporimeter (10) with the import intercommunication of condenser (12).
9. The combined geothermal water, cooling heating and power system as claimed in claim 8, wherein the expander (16) and the compressor (17) are connected by a second flexible coupling (19), and the expander (16) is used for driving the compressor (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220252658.1U CN216790570U (en) | 2022-02-07 | 2022-02-07 | Geothermal water combined cooling heating and power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220252658.1U CN216790570U (en) | 2022-02-07 | 2022-02-07 | Geothermal water combined cooling heating and power system |
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| CN216790570U true CN216790570U (en) | 2022-06-21 |
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| CN202220252658.1U Active CN216790570U (en) | 2022-02-07 | 2022-02-07 | Geothermal water combined cooling heating and power system |
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- 2022-02-07 CN CN202220252658.1U patent/CN216790570U/en active Active
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