CN219865358U - Solar photo-thermal-geothermal energy coupling power generation system - Google Patents

Solar photo-thermal-geothermal energy coupling power generation system Download PDF

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Publication number
CN219865358U
CN219865358U CN202321234984.0U CN202321234984U CN219865358U CN 219865358 U CN219865358 U CN 219865358U CN 202321234984 U CN202321234984 U CN 202321234984U CN 219865358 U CN219865358 U CN 219865358U
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working medium
thermal
power generation
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solar
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温洋
余华贵
张文
雷荷青
李茚藤
李思宇
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Xian Shiyou University
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Xian Shiyou University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

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Abstract

The utility model discloses a solar photo-thermal-geothermal energy coupling power generation system which comprises a tower type solar heliostat field heating device, wherein the output end of a thermal working medium storage box of the tower type solar heliostat field heating device is communicated with the thermal working medium input end of a primary expansion vessel through a thermal working medium guide pipe. According to the utility model, the tower type solar heliostat field heating device is utilized to heat the heat carrying working medium, so that the heat of the working medium is improved; when transferring the heat carrying working medium, the part of the heat carrying working medium exceeding the flow of the quantitative water pump enters the stratum to form a heat reservoir, and under the condition that solar heating cannot be realized at night, the temperature of the heat carrying working medium extracted from high-temperature geothermal heat stored in the heat reservoir also meets the power generation technology of a subsequent flash evaporation method; after the solar energy and the geothermal energy are successfully coupled, a two-stage flash evaporation system consisting of a first-stage flash evaporation container, a second-stage flash evaporation container, a steam turbine and a generator is utilized for geothermal power generation, so that the geothermal power is provided for a user, and the energy utilization rate is increased.

Description

Solar photo-thermal-geothermal energy coupling power generation system
Technical Field
The utility model relates to the technical field of new energy, in particular to a solar photo-thermal-geothermal energy coupling power generation system.
Background
Geothermal power generation is a novel power generation technology using underground hot water and steam as power sources. The basic principle is similar to thermal power generation, and according to the energy conversion principle, geothermal energy is firstly converted into mechanical energy, and then the mechanical energy is converted into electric energy. Geothermal power generation is a process of converting underground thermal energy into mechanical energy and then converting the mechanical energy into electrical energy, or called geothermal power generation, and the geothermal power generation is commonly used in the following technologies: a geothermal flash evaporation method power generation technology, a geothermal duplex cycle power generation system, a geothermal total-heat-retention power generation system, a geothermal dry steam power generation system and the like.
In either method, the geothermal energy is converted into mechanical energy, and then the mechanical energy is converted into electric energy, so that solar energy resources are not fully utilized, and a certain resource waste is caused.
Disclosure of Invention
The utility model aims to solve the defects that in the prior art, the geothermal power generation system is single in energy source and cannot be coupled with solar energy, and provides a solar photo-thermal-geothermal energy coupling power generation system.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the solar photo-thermal-geothermal energy coupling power generation system comprises a tower type solar heliostat field heating device, wherein the tower type solar heliostat field heating device comprises a plurality of solar mirrors capable of automatically adjusting directions, a high tower with a thermal energy receiver and a heating device for heating working media, the inclination angles of the plurality of solar mirrors can be automatically adjusted along with time, reflected light rays are focused on the thermal energy receiver on the high tower, the thermal energy receiver receives thermal energy and then transmits the thermal energy to the heating device, the heating device heats the working media, the heating device is required to be provided with a storage tank for containing the thermal working media, the output end of the thermal working media storage tank of the tower type solar heliostat field heating device is communicated with the thermal working media input end of a primary expansion vessel through a thermal working media guide pipe, the steam output end of the primary expansion vessel is communicated with the steam input end of a steam turbine, the drain end of the primary expansion vessel is communicated with the thermal working media input end of a secondary expansion vessel through a water guide pipe, and the steam output end of the secondary expansion vessel is communicated with the steam input end of the steam turbine through a power input end of the power generator;
the thermal working medium storage tank of the tower type solar heliostat field heating device is communicated with the production well through the thermal working medium storage pipe, the production well is buried underground, the thermal working medium return pipe is installed at the top end of the production well in a communicating mode, the thermal working medium return pipe is installed on the thermal working medium guide pipe in a communicating mode, and the quantitative water pump is installed on the thermal working medium guide pipe.
Preferably, a water pump is mounted on the water guide pipe.
Preferably, the drainage end of the secondary expansion vessel is communicated with the water inlet end of the recharging well, and the recharging well is buried underground.
Preferably, the water draining end of the steam turbine is communicated with the water inlet end of the condenser, the water draining end of the condenser is communicated with the water inlet end of the cooling tower, the water draining end of the cooling tower is communicated with the water inlet end of the condenser, and the cooling tower is further provided with a circulating water inlet pipe.
Preferably, the hot working medium storage pipe, the hot working medium guide pipe, the hot working medium return pipe and the water guide pipe are all provided with electromagnetic valves.
Preferably, the power output end of the generator is electrically connected with the power grid system.
The utility model has the following beneficial effects:
1. according to the utility model, the tower type solar heliostat field heating device is utilized to heat the heat carrying working medium, so that the heat of the working medium is improved;
2. when transferring the heat carrying working medium, the part of the heat carrying working medium exceeding the flow of the quantitative water pump enters the stratum to form a heat reservoir, and under the condition that solar heating cannot be realized at night, the temperature of the heat carrying working medium extracted from high-temperature geothermal heat stored in the heat reservoir also meets the power generation technology of a subsequent flash evaporation method;
3. after the solar energy and the geothermal energy are successfully coupled, a two-stage flash evaporation system consisting of a first-stage flash evaporation container, a second-stage flash evaporation container, a steam turbine and a generator is utilized for geothermal power generation, so that the geothermal power is provided for a user, and the energy utilization rate is increased.
Drawings
Fig. 1 is a schematic diagram of a front view of a solar photo-thermal-geothermal energy coupling power generation system according to the present utility model;
fig. 2 is a schematic perspective view of a solar photo-thermal-geothermal energy coupling power generation system according to the present utility model;
fig. 3 is a schematic top view of a solar photo-thermal-geothermal energy coupled power generation system according to the present utility model.
In the figure: 1. a tower type solar heliostat field heating device; 2. a production well; 3. a quantitative water pump; 4. a primary expansion vessel; 5. a second-stage flash tank; 6. a steam turbine; 7. a generator; 8. recharging the well; 9. a condenser; 10. a cooling tower; 11. a thermal medium storage tube; 12. a hot working medium guide pipe; 13. a hot working medium return pipe; 14. a water conduit; 15. and (3) a water pump.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, a solar photo-thermal-geothermal energy coupling power generation system comprises a tower solar heliostat field heating device 1, wherein the tower solar heliostat field heating device 1 comprises a plurality of solar mirrors capable of automatically adjusting directions, a high tower with thermal energy receivers and a heating device for heating working media, the inclination angles of the plurality of solar mirrors can be automatically adjusted along with time, reflected light rays of the solar mirrors are focused on the thermal energy receivers on the high tower, the thermal energy receivers receive thermal energy and then transfer the thermal energy to the heating device, the heating device heats working media, the heating device needs to be provided with a storage box for holding the thermal working media, the output end of the thermal working media storage box of the tower solar heliostat field heating device 1 is communicated and installed at the thermal working media input end of a primary expansion vessel 4 through a thermal working media guide pipe 12, the steam output end of the primary expansion vessel 4 is communicated and installed at the steam input end of a steam turbine 6, the steam output end of the primary expansion vessel 4 is communicated and installed at the thermal working media input end of a secondary expansion vessel 5 through a water guide pipe 14, the steam output end of the secondary expansion vessel 5 is communicated and installed at the steam input end of the steam turbine 6, and the output end of the steam turbine 6 is fixedly connected with the power input end of the power generator 7;
the thermal medium storage tank of the tower type solar heliostat field heating device 1 is communicated with the production well 2 through the thermal medium storage pipe 11, the production well 2 is buried underground, the thermal medium return pipe 13 is installed at the top end of the production well 2 in a communicating mode, the thermal medium return pipe 13 is installed on the thermal medium guide pipe 12 in a communicating mode, and the quantitative water pump 3 is installed on the thermal medium guide pipe 12.
Further, a water pump 15 is mounted on the water guide pipe 14.
Further, the drainage end of the secondary expansion tank 5 is communicated with the water inlet end of the recharging well 8, and the recharging well 8 is buried underground.
Further, the water draining end of the steam turbine 6 is communicated with the water inlet end of the condenser 9, the water draining end of the condenser 9 is communicated with the water inlet end of the cooling tower 10, the water draining end of the cooling tower 10 is communicated with the water inlet end of the condenser 9, and the cooling tower 10 is further provided with a circulating water inlet pipe.
Further, solenoid valves are installed on the hot-working-medium storage pipe 11, the hot-working-medium guide pipe 12, the hot-working-medium return pipe 13 and the guide pipe 14.
Further, the power output end of the generator 7 is electrically connected to the grid system.
Working principle:
firstly, during daytime, a tower type solar heliostat field heating device 1 is utilized to heat working media, the heated working media, namely, the heating working media, are conveyed into a primary expansion tank 4 through a quantitative water pump 3 to perform decompression and heat release, the heating working media enter a cooling tower 10 after being aerated, the non-vaporized heating working media in the primary expansion tank 4 are conveyed into a secondary expansion tank 5 through the action of a water pump 15 to perform further decompression and heat release, the vaporized heating working media in the secondary expansion tank 5 are conveyed into a steam turbine 6, the steam turbine 6 is driven to work by the gaseous heating working media conveyed in the primary expansion tank 4 and the secondary expansion tank 5, the steam turbine 6 drives a generator 7 to generate power, and finally, the generated power is combined into a power grid system to be used;
the condensed working medium in the secondary expansion vessel 5 enters a recharging well 8 for standby or storage, the condensed working medium in the steam turbine 6 enters a condenser 9 for further cooling and condensation, finally the working medium in the condenser 9 enters a cooling tower 10 for cooling, and the cooled working medium is recycled into the condenser 9 for cooling the working medium just entering the condenser 9;
when the thermal working medium conveyed by the quantitative water pump 3 reaches a set value, the quantitative water pump 3 stops working, redundant thermal working medium enters the production well 2 through the thermal working medium storage pipe 11, so that heat storage is formed, and when the thermal working medium is used at night, the thermal working medium in the production well 2 is pumped into the primary expansion tank 4 through the thermal working medium return pipe 13 by using the quantitative water pump 3, so that the thermal working medium is used, and the problem that the tower solar heliostat field heating device 1 cannot generate heat at night is solved.
In addition, in the whole solar photo-thermal-geothermal energy coupling power generation system, the control of the moving direction of the working medium and the closing of the pipeline by the parts such as valves, instruments and meters of proper types arranged on the pipeline and the parts belongs to the conventional technical means of the person skilled in the art, so the installation position thereof is not described in detail, and the person skilled in the art will understand.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The solar photo-thermal-geothermal energy coupling power generation system comprises a tower type solar heliostat field heating device (1), and is characterized in that the output end of a thermal working medium storage box of the tower type solar heliostat field heating device (1) is communicated and installed at the thermal working medium input end of a primary expansion tank (4) through a thermal working medium guide pipe (12), the steam output end of the primary expansion tank (4) is communicated and installed at the steam input end of a steam turbine (6), the water discharge end of the primary expansion tank (4) is communicated and installed at the thermal working medium input end of a secondary expansion tank (5) through a water guide pipe (14), the steam output end of the secondary expansion tank (5) is communicated and installed at the steam input end of a steam turbine (6), and the power output end of the steam turbine (6) is fixedly connected with the power input end of a generator (7);
the tower type solar heliostat field heating device is characterized in that a thermal working medium storage tank of the tower type solar heliostat field heating device (1) is communicated with a production well (2) through a thermal working medium storage pipe (11), the production well (2) is buried underground, a thermal working medium return pipe (13) is installed at the top end of the production well (2) in a communicating mode, the thermal working medium return pipe (13) is installed on the thermal working medium guide pipe (12) in a communicating mode, and a quantitative water pump (3) is installed on the thermal working medium guide pipe (12).
2. A solar photo-thermal-geothermal energy coupled power generation system according to claim 1, wherein a water pump (15) is installed on the water guide pipe (14).
3. The solar photo-thermal-geothermal energy coupling power generation system according to claim 1, wherein the water draining end of the secondary expansion vessel (5) is mutually communicated with the water inlet end of the recharging well (8), and the recharging well (8) is buried underground.
4. The solar photo-thermal-geothermal energy coupling power generation system according to claim 1, wherein the water draining end of the steam turbine (6) is communicated with the water inlet end of the condenser (9), the water draining end of the condenser (9) is communicated with the water inlet end of the cooling tower (10), the water draining end of the cooling tower (10) is communicated with the water inlet end of the condenser (9), and the cooling tower (10) is further provided with a circulating water inlet pipe.
5. The solar photo-thermal-geothermal energy coupling power generation system according to claim 1, wherein electromagnetic valves are installed on the thermal working medium storage pipe (11), the thermal working medium guide pipe (12), the thermal working medium return pipe (13) and the water guide pipe (14).
6. A solar photo-thermal-geothermal energy coupled power generation system according to claim 1, characterized in that the power output of the generator (7) is electrically connected to the grid system.
CN202321234984.0U 2023-05-22 2023-05-22 Solar photo-thermal-geothermal energy coupling power generation system Active CN219865358U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321234984.0U CN219865358U (en) 2023-05-22 2023-05-22 Solar photo-thermal-geothermal energy coupling power generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321234984.0U CN219865358U (en) 2023-05-22 2023-05-22 Solar photo-thermal-geothermal energy coupling power generation system

Publications (1)

Publication Number Publication Date
CN219865358U true CN219865358U (en) 2023-10-20

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