Light-ultrasonic-geothermal coupling combined energy supply system
Through the light-ultrasound-geothermal coupling combined energy supply system, using trough collectors and organic Rankine cycle power generation units, combined with solar thermal energy storage and geothermal energy heat exchange and storage units, the problems of low efficiency of medium and low temperature geothermal energy power generation and unstable solar power generation are solved, and efficient and stable energy supply is achieved.
Patent Information
- Application Number
- CN202423079521.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing technologies, medium and low-temperature geothermal power generation has low efficiency and insufficient energy quality degradation, solar power generation is discontinuous, unstable and costly, and the combined utilization system of geothermal energy and solar energy is complex and difficult to work together efficiently.
A light-ultrasound-geothermal coupling combined energy supply system is adopted, including a concentrating heat collection unit, an organic Rankine cycle power generation unit, a photothermal energy storage unit, a geothermal heat exchange and storage unit and a heating unit. Solar heat is collected through a trough collector, combined with organic Rankine cycle power generation, and ultrasonic waves are used to enhance heat transfer, thereby realizing an efficient combination of geothermal energy and solar energy.
It improves the utilization efficiency of geothermal energy, reduces the waste of geothermal resources, overcomes the problems of low efficiency of single medium and low temperature geothermal power generation and unstable solar power generation, and realizes efficient collaborative work of the system.
Smart Images
Figure CN223330729U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of comprehensive utilization of renewable energy, in particular to a light-ultrasound-geothermal coupling combined energy supply system. Background Art
[0002] The development and utilization of clean energy can effectively reduce the consumption of fossil fuels such as coal and oil, thereby reducing environmental pollution and damage. It can also promote energy diversification, reduce dependence on a single energy source, and improve the stability and security of energy supply. With the continuous advancement of technology and the continuous reduction of costs, the application prospects of geothermal energy and solar energy as renewable clean energy will become even broader. The abundant geothermal energy, solar energy, and other renewable energy sources in the Qinghai-Tibet Plateau are of great significance for improving the local energy structure, reducing carbon emissions, and promoting sustainable development.
[0003] Currently, the development and utilization of geothermal and solar energy is plagued by issues such as insufficient energy utilization and low efficiency. Solar power generation alone suffers from discontinuity, instability, and high costs. Low- to medium-temperature geothermal power generation alone suffers from low efficiency, waste of geothermal resources, and insufficient energy quality degradation. The combined utilization of low- to medium-temperature geothermal and solar energy presents complex systems and difficulties in efficient collaboration. Utility Model Content
[0004] The purpose of this utility model is to provide a light-ultrasound-geothermal coupling combined energy supply system, which can improve the utilization efficiency of geothermal energy and reduce the waste of geothermal resources. It can not only overcome the problems of low efficiency and insufficient energy quality decline of single medium and low temperature geothermal power generation, but also overcome the problems of discontinuity, instability and high cost of single solar power generation. It can also overcome the problems of complex system and difficulty in efficient collaborative work in existing geothermal energy and solar energy combined utilization technologies.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The optical-ultrasound-geothermal coupled energy supply system includes a concentrated solar collector unit and an organic Rankine cycle power generation unit;
[0007] The concentrating heat collecting unit is used to collect solar heat, and includes a trough heat collector, a second valve, a first organic heat-conducting medium pump, and a first circulation pipeline. The trough heat collector, the second valve, and the first organic heat-conducting medium pump are connected in a loop in sequence through the first circulation pipeline, and the first circulation pipeline is filled with the first organic heat-conducting medium;
[0008] The organic Rankine cycle power generation unit is used for thermal power generation, and includes a superheater, an evaporator, a steam turbine, a generator, a condenser, a second organic heat-conducting medium pump, and a second circulation pipeline. The evaporator, superheater, steam turbine, condenser, and second organic heat-conducting medium pump are connected in a loop in sequence through the second circulation pipeline. The second circulation pipeline is filled with the second organic heat-conducting medium. The steam turbine is connected to the generator, and the steam turbine drives the generator to generate electricity.
[0009] The hot side medium inlet on the superheater is connected to the second valve through the first circulation pipeline, the hot side medium outlet on the superheater is connected to the hot side medium inlet on the evaporator through the first circulation pipeline, and the hot side medium on the superheater is connected to the first organic heat conductive medium pump inlet through the first circulation pipeline.
[0010] Furthermore, there are multiple trough collectors, and the multiple trough collectors are arranged in series or in parallel.
[0011] Furthermore, the optical-ultrasonic-geothermal coupled energy supply system also includes a photothermal energy storage unit, which includes a third valve, a multi-temperature heat storage tank, and a first organic thermal conductive medium heat storage pipeline. The multi-temperature heat storage tank includes a tank body, and a first partition and a second partition are arranged inside the tank body. The first partition and the second partition divide the tank body from top to bottom into three cavities, and the three cavities are filled with high-temperature heat storage material, medium-temperature heat storage material, and low-temperature heat storage material, respectively. A first organic thermal conductive medium heat exchange pipe is provided in the tank body, which runs through the three cavities. Both ends of the first organic thermal conductive medium heat exchange pipe are respectively connected to a first organic thermal conductive medium inlet and a first organic thermal conductive medium outlet provided on the tank body. The first organic thermal conductive medium inlet is connected to the third valve outlet through the first organic thermal conductive medium heat storage pipeline, the third valve inlet is connected to the second valve outlet through the first organic thermal conductive medium heat storage pipeline, and the first organic thermal conductive medium outlet is connected to the first organic thermal conductive medium pump inlet through the first organic thermal conductive medium heat storage pipeline.
[0012] Furthermore, the optical-ultrasound-geothermal coupling combined energy supply system also includes a geothermal heat exchange and storage unit, which includes a preheater, a lifting water pump, a geothermal water supply pipe, a geothermal water return pipe, and a geothermal heat storage pipeline. The preheater includes a shell, a second organic heat conductive medium heat exchange pipe is provided in the shell, a cold side outlet, a cold side inlet, a hot side outlet, and a hot side inlet are provided on the shell, the two ends of the second organic heat conductive medium heat exchange pipe are respectively connected to the cold side outlet and the cold side inlet, the hot side inlet is connected to the geothermal water supply pipe, and the lower end of the geothermal water supply pipe extends to the bottom of the heat exchange pipe. Entering the geothermal well, a lifting water pump is installed on the geothermal water supply pipe, and the hot side outlet is connected to the water inlet end of the geothermal heat storage pipeline. The fifth valve, the circulating water pump, and the first valve are sequentially arranged on the geothermal heat storage pipeline. The water outlet end of the geothermal heat storage pipeline is connected to the geothermal water inlet provided on the multi-temperature heat storage tank body, and the geothermal water return pipe is connected to the geothermal water outlet provided on the multi-temperature heat storage tank body. The geothermal water return pipe extends into the geothermal well. A geothermal water heat exchange pipe running through the three cavities is also provided in the multi-temperature heat storage tank body, and both ends of the geothermal water heat exchange pipe are respectively connected to the geothermal water outlet and the geothermal water inlet.
[0013] Furthermore, the geothermal water supply pipe is also provided with a sediment treatment device for filtering and removing sediment impurities in the geothermal water, and the sediment treatment device is located upstream of the lifting water pump.
[0014] Furthermore, an ultrasonic device is provided inside the shell of the preheater.
[0015] Furthermore, the optical-ultrasound-geothermal coupled combined energy supply system also includes a heating unit for providing heating to residents. The heating unit includes a fourth valve, a user heater, and a heating circulation pipeline. The fourth valve and the user heater are sequentially arranged on the heating circulation pipeline. The two ends of the heating circulation pipeline are respectively connected to the heating water outlet and the heating water inlet provided on the multi-temperature heat storage tank body. A heating water heat exchange pipe is also provided in the lowest cavity in the multi-temperature heat storage tank body. The two ends of the heating water heat exchange pipe are respectively connected to the heating water outlet and the heating water inlet. The heating circulation pipeline is filled with heating water.
[0016] Furthermore, the geothermal water heat exchange pipe, the first organic heat conductive medium heat exchange pipe, the heating water heat exchange pipe, and the second organic heat conductive medium heat exchange pipe respectively adopt a serpentine pipe or a spiral pipe structure.
[0017] Compared with the prior art, the beneficial technical effects of the present invention are:
[0018] The light-ultrasound-geothermal coupling combined energy supply system of the present invention can utilize solar energy and geothermal energy for thermal power generation and residential heating, and has diverse energy supply modes, which not only improves the utilization efficiency of geothermal energy but also reduces the waste of geothermal resources. It not only overcomes the problems of low efficiency and insufficient energy quality decline of single medium and low temperature geothermal energy power generation, but also overcomes the problems of discontinuity, instability and high cost of single solar power generation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of the optical-ultrasonic-geothermal coupled combined energy supply system of the present invention;
[0020] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle preheater;
[0021] Figure 3 for Figure 1 Schematic diagram of the internal structure of the medium and multi-temperature heat storage tank;
[0022] Figure 1: trough collector, 2: first circulation pipeline, 3: first valve, 4: second valve, 5: first organic heat transfer medium pump, 6: third valve, 7: multi-temperature heat storage tank, 701: geothermal water inlet, 702: geothermal water outlet, 703: geothermal water heat exchange pipe, 704: first organic heat transfer medium inlet, 705: first organic heat transfer medium outlet, 706: first organic heat transfer medium heat exchange pipe, 707: heating water outlet, 708: heating water inlet, 709: heating water heat exchange pipe, 710: first partition, 711: second partition, 712: high temperature heat storage material, 713: medium temperature heat storage material Material, 714-low-temperature heat storage material, 8-fourth valve, 9-geothermal water return pipe, 10-user heater, 11-circulating water pump, 12-superheater, 13-evaporator, 14-fifth valve, 15-steam turbine, 16-generator, 17-condenser, 18-second organic heat transfer medium pump, 19-second circulation pipeline, 20-preheater, 201-cold side outlet, 202-second organic heat transfer medium heat exchange tube, 203-ultrasonic device, 204-cold side inlet, 205-hot side outlet, 206-hot side inlet, 21-lifting water pump, 22-sediment treatment device, 23-geothermal water supply pipe. DETAILED DESCRIPTION
[0023] The technical solutions of the present invention will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0024] Example 1
[0025] Please see the attached Figure 1-3 As shown, the optical-ultrasound-geothermal coupled energy supply system provided in this embodiment includes a concentrating heat collection unit and an organic Rankine cycle power generation unit;
[0026] The concentrating heat collection unit is used to collect solar heat, and includes a trough collector 1, a second valve 4, a first organic heat-conducting medium pump 5, and a first circulation pipeline 2. The trough collector 1, the second valve 4, and the first organic heat-conducting medium pump 5 are connected in a loop in sequence through the first circulation pipeline 2, and the first circulation pipeline 2 is filled with the first organic heat-conducting medium;
[0027] The organic Rankine cycle power generation unit is used for thermal power generation, and includes a superheater 12, an evaporator 13, a steam turbine 15, a generator 16, a condenser 17, a second organic heat-conducting medium pump 18, and a second circulation pipeline 19. The evaporator 13, the superheater 12, the steam turbine 15, the condenser 17, and the second organic heat-conducting medium pump 18 are sequentially connected in a loop through the second circulation pipeline 19. The second circulation pipeline 19 is filled with a second organic heat-conducting medium. The steam turbine 15 is connected to the generator 16, and the steam turbine 15 drives the generator 16 to generate electricity.
[0028] The hot side medium inlet on the superheater 12 is connected to the second valve 4 through the first circulation pipeline 2, the hot side medium outlet on the superheater 12 is connected to the hot side medium inlet on the evaporator 13 through the first circulation pipeline 2, and the hot side medium on the superheater 12 is connected to the inlet of the first organic heat conductive medium pump 5 through the first circulation pipeline 2.
[0029] Specifically, there are multiple trough collectors 1, and the multiple trough collectors 1 are arranged in series or in parallel.
[0030] In this embodiment, a plurality of trough collectors 1 are arranged in series, and the trough collector 1 is mainly used for collecting solar heat. The trough collector 1 realizes the conversion of light energy into heat energy through focusing, reflection and absorption, so that the first organic heat-conducting medium reaches a certain temperature. The trough collector 1 belongs to the category of medium and high temperature collectors, and can make the first organic heat-conducting medium reach a relatively high temperature. The first organic heat-conducting medium can be an organic heat-conducting oil, such as diphenylethylene, diphenylsilicon oxide, diphenylethylene, diphenylmethane, and alkylbenzene type, alkylnaphthalene type, alkylbiphenyl type, and biphenyl and diphenyl ether low-melting mixture type heat-conducting oil. The second valve 4 is used to control the flow speed of the first organic heat-conducting medium in the trough collector 1. The first circulation pipeline 2 and the second circulation pipeline 19 both use high-temperature and corrosion-resistant pipe fittings. The second organic heat-conducting medium can be an organic working fluid such as alkanes, alcohols, ketones, such as n-butane, isobutane, ethyl chloride, etc. The superheater 12 is used to heat the saturated steam of the second organic heat-conducting medium into superheated steam. The evaporator 13 is used to evaporate the second organic heat-conducting medium to generate steam. The steam turbine 15 is used to convert thermal energy into mechanical energy. The high-temperature superheated steam drives the steam turbine 15, converting thermal energy into mechanical energy.
[0031] The optical-ultrasonic-geothermal coupled energy supply system of this embodiment is suitable for situations where only solar energy is used for energy supply and the sunlight is insufficient. When the light energy collected by the trough collector 1 is only enough to heat the superheater 12 and increase the temperature of the evaporator 13 to vaporize the light, the second valve 4 is opened. The first organic heat-conducting medium pump 5 is controlled to operate to promote the flow of the first organic heat-conducting medium in the first circulation pipeline 2. The first organic heat-conducting medium first flows into the trough collector 1. The trough collector 1 collects heat energy in sunlight and transfers the heat energy to the first organic heat-conducting medium through the connected first circulation pipeline 2. The first organic heat-conducting medium passes through the superheater 12 to heat the saturated steam of the second organic heat-conducting medium into superheated steam at a certain temperature. Then, the first organic heat-conducting medium passes through the evaporator 13 for heat exchange, and the second organic heat-conducting medium is heated and vaporized to complete the cycle. The second organic heat-conducting medium in the second circulation pipeline 19 is promoted to flow by the second organic heat-conducting medium pump 18. After passing through the evaporator 13 and the superheater 12 in succession, the high-temperature superheated steam is formed, and then the steam turbine 15 is driven to work. After that, the steam turbine 15 passes through the condenser 17 to complete the cycle. The steam turbine 15 drives the generator 16 to work, converting mechanical energy into electrical energy.
[0032] Example 2
[0033] On the basis of Example 1, the optical-ultrasound-geothermal coupling combined energy supply system also includes a photothermal energy storage unit, which includes a third valve 6, a multi-temperature heat storage tank 7, and a first organic thermal conductive medium heat storage pipeline. The multi-temperature heat storage tank 7 includes a tank body, and a first partition 710 and a second partition 711 are arranged inside the tank body. The first partition 710 and the second partition 711 divide the tank body from top to bottom into three cavities, and the three cavities are filled with high-temperature heat storage material 712, medium-temperature heat storage material 713, and low-temperature heat storage material 714 respectively. There are three through-holes in the tank body. The first organic heat conductive medium heat exchange tube 706 of the cavity has two ends connected to the first organic heat conductive medium inlet 704 and the first organic heat conductive medium outlet 705 provided on the tank body, respectively. The first organic heat conductive medium inlet 704 is connected to the outlet of the third valve 6 through the first organic heat conductive medium heat storage pipeline. The inlet of the third valve 6 is connected to the outlet of the second valve 4 through the first organic heat conductive medium heat storage pipeline. The first organic heat conductive medium outlet 705 is connected to the inlet of the first organic heat conductive medium pump 5 through the first organic heat conductive medium heat storage pipeline.
[0034] In this embodiment, the second valve 4 is used to control the flow of the first organic heat-conducting medium flowing out of the trough collector 1 , and the third valve 6 is used to control the flow of the first organic heat-conducting medium flowing into the multi-temperature heat storage tank 7 .
[0035] The optical-ultrasonic-geothermal coupled energy supply system of this embodiment is suitable for situations where solar energy is the sole energy source and there is sufficient sunlight. The solar energy collected by the trough collector 1 not only meets the requirements for heating the superheater 12 and raising the temperature for vaporization in the evaporator 13, but also provides excess energy. Based on Example 1, the second valve 4 remains open and the third valve 6 is opened. A portion of the first organic heat-conducting medium continues to exchange heat with the second organic heat-conducting medium in the evaporator 13 and superheater 12, completing the heat exchange cycle. The remaining portion of the first organic heat-conducting medium enters the multi-temperature heat storage tank 7, sequentially exchanging heat with the high-temperature heat storage material 712, the medium-temperature heat storage material 713, and the low-temperature heat storage material 714, completing the heat storage cycle.
[0036] Example 3
[0037] On the basis of Example 2, the optical-ultrasonic-geothermal coupling combined energy supply system also includes a geothermal heat exchange and storage unit, which includes a preheater 20, a lifting water pump 21, a geothermal water supply pipe 23, a geothermal water return pipe 9, and a geothermal heat storage pipeline. The preheater 20 includes a shell, a second organic heat conductive medium heat exchange pipe 202 is provided in the shell, and a cold side outlet 201, a cold side inlet 204, a hot side outlet 205, and a hot side inlet 206 are provided on the shell. The two ends of the second organic heat conductive medium heat exchange pipe 202 are respectively connected to the cold side outlet 201 and the cold side inlet 204, and the hot side inlet 206 is connected to the geothermal water supply pipe 23. The geothermal water supply pipe The lower end of 23 extends into the geothermal well, a lifting water pump 21 is provided on the geothermal water supply pipe 23, the hot side outlet 205 is connected to the water inlet end of the geothermal heat storage pipeline, and the fifth valve 14, the circulating water pump 11, and the first valve 3 are sequentially provided on the geothermal heat storage pipeline. The water outlet end of the geothermal heat storage pipeline is connected to the geothermal water inlet 701 provided on the tank body of the multi-temperature heat storage tank 7, and the geothermal water return pipe 9 is connected to the geothermal water outlet 702 provided on the tank body of the multi-temperature heat storage tank 7. The geothermal water return pipe 9 extends into the geothermal well. A geothermal water heat exchange pipe 703 running through the three cavities is also provided in the tank body of the multi-temperature heat storage tank 7. The two ends of the geothermal water heat exchange pipe 703 are respectively connected to the geothermal water outlet 702 and the geothermal water inlet 701.
[0038] In this embodiment, the first valve 3 and the fifth valve 14 are both used to control the flow of geothermal water entering the multi-temperature heat storage tank 7 .
[0039] Specifically, the geothermal water supply pipe 23 is further provided with a sediment processing device 22 for filtering and removing sediment impurities in the geothermal water. The sediment processing device 22 is located upstream of the lifting water pump 21 .
[0040] In this embodiment, the sediment treatment device 22 can be one or more of a quartz sand filter, a multi-media filter, a bag filter, and a cyclone desander. The appropriate filter type and filter medium are selected based on the water quality of the geothermal well, including the sediment content, particle size, and organic matter content of the geothermal water.
[0041] Specifically, an ultrasonic device 203 is further provided inside the shell of the preheater 20. The ultrasonic device 203 includes an ultrasonic transducer and an ultrasonic generator. The ultrasonic transducer is disposed inside the shell of the preheater 20 and is electrically connected to the ultrasonic generator. The ultrasonic generator is disposed inside or outside the shell of the preheater 20. Ultrasonic waves can enhance heat transfer and descaling, thereby improving the heat exchange efficiency of the preheater 20.
[0042] The optical-ultrasonic-geothermal coupled combined energy supply system of this embodiment is applicable to situations where light energy and geothermal energy are combined to supply energy. On the basis of Example 2, the lifting water pump 21 draws out the geothermal water in the geothermal well, flows through the preheater 20 to exchange heat with the second organic heat conductive medium, preheating the second organic heat conductive medium, and then enters the multi-temperature heat storage tank 7. After exchanging heat with the high-temperature heat storage material 712, the medium-temperature heat storage material 713, and the low-temperature heat storage material 714 in sequence, it returns to the geothermal well through the geothermal water return pipe 9; before the geothermal water flows through the preheater 20, a sediment treatment device 22 is used to remove sediment impurities. When the geothermal water flows in the preheater 20, ultrasonic waves are used to enhance heat transfer and descaling.
[0043] In this embodiment, geothermal water is stored in the multi-temperature heat storage tank 7 by exchanging heat with the high-temperature heat storage material 712, the medium-temperature heat storage material 713, and the low-temperature heat storage material 714. When the temperature of the first organic heat-conducting medium flowing through the multi-temperature heat storage tank 7 is lower than the heat storage temperature of the high-temperature heat storage material 712, the medium-temperature heat storage material 713, and the low-temperature heat storage material 714, the high-temperature heat storage material 712, the medium-temperature heat storage material 713, and the low-temperature heat storage material 714 can transfer heat energy to the first organic heat-conducting medium.
[0044] Example 4
[0045] On the basis of Example 3, the optical-ultrasonic-geothermal coupled combined energy supply system also includes a heating unit for providing heating to residents. The heating unit includes a fourth valve 8, a user heater 10, and a heating circulation pipeline. The fourth valve 8 and the user heater 10 are sequentially arranged on the heating circulation pipeline. The two ends of the heating circulation pipeline are respectively connected to the heating water outlet 707 and the heating water inlet 708 provided on the tank body of the multi-temperature heat storage tank 7. A heating water heat exchange pipe 709 is also provided in the lowermost cavity of the tank body of the multi-temperature heat storage tank 7. The two ends of the heating water heat exchange pipe 709 are respectively connected to the heating water outlet 707 and the heating water inlet 708, and the heating circulation pipeline is filled with heating water.
[0046] Specifically, the geothermal water heat exchange pipe 703 , the first organic heat conductive medium heat exchange pipe 706 , the heating water heat exchange pipe 709 , and the second organic heat conductive medium heat exchange pipe 202 respectively adopt a serpentine pipe or a spiral pipe structure.
[0047] In this embodiment, the geothermal water heat exchange pipe 703, the first organic heat conductive medium heat exchange pipe 706, the heating water heat exchange pipe 709, and the second organic heat conductive medium heat exchange pipe 202 all adopt a serpentine pipe structure to improve heat exchange efficiency.
[0048] This embodiment of the optical-ultrasonic-geothermal coupled energy supply system is suitable for combined solar and geothermal energy supply. Based on Example 3, by opening fourth valve 8, the heat energy stored in the low-temperature heat storage material 714 within the multi-temperature heat storage tank 7 exchanges heat with the heating water flowing in the heating water heat exchange pipe 709. The heating water then flows through the user heater 10 to provide heat to the user's home. To promote the flow of heating water, a heating circulation water pump 11 can be added to the heating circulation pipeline.
[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the technical solution and conceptual design of the present invention shall be included in the scope of protection of the present invention.
Claims
1. The optical-ultrasound-geothermal coupled energy supply system is characterized by: It includes a concentrating solar collector unit and an organic Rankine cycle power generation unit; The concentrating heat collecting unit is used to collect solar heat, and includes a trough heat collector, a second valve, a first organic heat-conducting medium pump, and a first circulation pipeline. The trough heat collector, the second valve, and the first organic heat-conducting medium pump are connected in a loop in sequence through the first circulation pipeline, and the first circulation pipeline is filled with the first organic heat-conducting medium; The organic Rankine cycle power generation unit is used for thermal power generation, and includes a superheater, an evaporator, a steam turbine, a generator, a condenser, a second organic heat-conducting medium pump, and a second circulation pipeline. The evaporator, superheater, steam turbine, condenser, and second organic heat-conducting medium pump are connected in a loop in sequence through the second circulation pipeline. The second circulation pipeline is filled with the second organic heat-conducting medium. The steam turbine is connected to the generator, and the steam turbine drives the generator to generate electricity. The hot side medium inlet on the superheater is connected to the second valve through the first circulation pipeline, the hot side medium outlet on the superheater is connected to the hot side medium inlet on the evaporator through the first circulation pipeline, and the hot side medium on the superheater is connected to the first organic heat conductive medium pump inlet through the first circulation pipeline.
2. The optical-ultrasound-geothermal coupled energy supply system according to claim 1, characterized in that: There are multiple trough heat collectors, which are connected in series or in parallel.
3. The optical-ultrasound-geothermal coupled energy supply system according to claim 1, characterized in that: It also includes a photothermal energy storage unit, which includes a third valve, a multi-temperature heat storage tank, and a first organic thermal conductive medium heat storage pipeline. The multi-temperature heat storage tank includes a tank body, and a first partition and a second partition are arranged inside the tank body. The first partition and the second partition divide the tank body from top to bottom into three cavities, and the three cavities are filled with high-temperature heat storage material, medium-temperature heat storage material, and low-temperature heat storage material respectively. A first organic thermal conductive medium heat exchange pipe running through the three cavities is provided in the tank body, and both ends of the first organic thermal conductive medium heat exchange pipe are respectively connected to the first organic thermal conductive medium inlet and the first organic thermal conductive medium outlet provided on the tank body. The first organic thermal conductive medium inlet is connected to the third valve outlet through the first organic thermal conductive medium heat storage pipeline, the third valve inlet is connected to the second valve outlet through the first organic thermal conductive medium heat storage pipeline, and the first organic thermal conductive medium outlet is connected to the first organic thermal conductive medium pump inlet through the first organic thermal conductive medium heat storage pipeline.
4. The optical-ultrasound-geothermal coupled energy supply system according to claim 3, characterized in that: It also includes a geothermal heat exchange and storage unit, which includes a preheater, a lifting water pump, a geothermal water supply pipe, a geothermal water return pipe, and a geothermal heat storage pipeline. The preheater includes a shell, a second organic heat conductive medium heat exchange pipe is provided in the shell, a cold side outlet, a cold side inlet, a hot side outlet, and a hot side inlet are provided on the shell, the two ends of the second organic heat conductive medium heat exchange pipe are respectively connected to the cold side outlet and the cold side inlet, and the hot side inlet is connected to the geothermal water supply pipe, the lower end of the geothermal water supply pipe extends into the geothermal well, and the geothermal water supply pipe A lifting water pump is provided on the top, and the hot side outlet is connected to the water inlet end of the geothermal heat storage pipeline. The fifth valve, the circulating water pump, and the first valve are sequentially provided on the geothermal heat storage pipeline. The water outlet end of the geothermal heat storage pipeline is connected to the geothermal water inlet provided on the multi-temperature heat storage tank body, and the geothermal water return pipe is connected to the geothermal water outlet provided on the multi-temperature heat storage tank body. The geothermal water return pipe extends into the geothermal well. A geothermal water heat exchange pipe running through the three cavities is also provided in the multi-temperature heat storage tank body, and both ends of the geothermal water heat exchange pipe are respectively connected to the geothermal water outlet and the geothermal water inlet.
5. The optical-ultrasound-geothermal coupled energy supply system according to claim 4, characterized in that: The geothermal water supply pipe is also provided with a sediment processing device for filtering and removing sediment impurities in the geothermal water. The sediment processing device is located upstream of the lifting water pump.
6. The optical-ultrasound-geothermal coupled energy supply system according to claim 4, characterized in that: An ultrasonic device is also provided on the inner side of the shell of the preheater.
7. The optical-ultrasound-geothermal coupled energy supply system according to claim 4, characterized in that: It also includes a heating unit for providing heating for residents. The heating unit includes a fourth valve, a user heater, and a heating circulation pipeline. The fourth valve and the user heater are sequentially arranged on the heating circulation pipeline. The two ends of the heating circulation pipeline are respectively connected to the heating water outlet and the heating water inlet provided on the multi-temperature heat storage tank body. A heating water heat exchange pipe is also provided in the lowest cavity in the multi-temperature heat storage tank body. The two ends of the heating water heat exchange pipe are respectively connected to the heating water outlet and the heating water inlet. The heating circulation pipeline is filled with heating water.
8. The optical-ultrasound-geothermal coupled energy supply system according to claim 7, characterized in that: The geothermal water heat exchange pipe, the first organic heat conductive medium heat exchange pipe, the heating water heat exchange pipe, and the second organic heat conductive medium heat exchange pipe respectively adopt a serpentine pipe or a spiral pipe structure.