Geothermal energy utilization system

Abstract

Embodiments of the present application provide a geothermal energy utilization system, comprising a cold working medium tank, a geothermal well, a thermal working medium storage apparatus, a steam generator, a high-pressure processor and a steam turbine generator. The cold working medium tank is communicated with the geothermal well, and a cold working medium in the cold working medium tank is output into the geothermal well for heat exchange to form a first thermal working medium; the geothermal well is communicated with the thermal working medium storage apparatus, and the first thermal working medium in the geothermal well is output into the thermal working medium storage apparatus; the thermal working medium storage apparatus is communicated with the steam generator, and the first thermal working medium in the thermal working medium storage apparatus is output into the steam generator, so that water in the steam generator is evaporated into steam; the steam generator is communicated with the high-pressure processor, and the steam in the steam generator is output into the high-pressure processor; and the high-pressure processor is communicated with the steam turbine generator, so as to output the steam in the high-pressure processor into the steam turbine generator to drive the steam turbine generator to generate power. The geothermal energy utilization system provided by the embodiments of the present application improves the utilization efficiency of geothermal energy and has a wide range of application.

Description

A geothermal energy utilization system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 26, 2023, with application number 202310927986.6 and application name “A Geothermal Energy Utilization System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of new energy utilization, and in particular to a geothermal energy utilization system. Background Art

[0003] In recent years, with the continuous advancement of science and technology, humanity has gained a new understanding of renewable resources. Geothermal energy, as one of the newly discovered renewable resources, is stable, continuous, and highly available. Using geothermal resources for power generation is virtually unaffected by weather and can continuously transmit electricity to the grid. Geothermal energy is stored deep underground in permeable strata, and the temperature increases with depth.

[0004] Currently, most geothermal power plants generate electricity by obtaining high-pressure hot water from deep underground and converting it into steam to drive generators. The steam is then cooled, condensed into water, and injected underground for reuse.

[0005] However, this type of geothermal power generation has high requirements for groundwater temperature, poor applicability, and high energy loss during the power generation process, resulting in low power generation efficiency.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a geothermal energy utilization system to solve the problems of low efficiency and high energy loss in geothermal power generation in the prior art.

[0008] An embodiment of the present application provides a geothermal energy utilization system, including a cold working fluid tank, a geothermal well, a hot working fluid storage device, a steam generator, a high-pressure processor and a steam turbine generator.

[0009] The cold working medium tank is used to store cold working medium. The cold working medium tank is connected to the geothermal well and outputs the cold working medium in the cold working medium tank to the geothermal well for heat exchange to form the first hot working medium.

[0010] The geothermal well is in communication with the thermal working medium storage device, and outputs the first thermal working medium in the geothermal well to the thermal working medium storage device.

[0011] The thermal medium storage device is communicated with the steam generator, and the first thermal medium in the thermal medium storage device is output to the steam generator for heat exchange, so that the liquid water in the steam generator evaporates into steam.

[0012] The steam generator is in communication with the high pressure processor and outputs the steam in the steam generator to the high pressure processor for pressurization.

[0013] The high-pressure processor is communicated with the steam turbine generator, so that the steam in the high-pressure processor is output to the steam turbine generator to drive the steam turbine generator to generate electricity.

[0014] In one possible implementation, in the geothermal energy utilization system provided in an embodiment of the present application, the steam generator includes a first heating element and a steam generating element, and the first heating element is used to increase the temperature of the steam generating element so that the liquid water in the steam generating element evaporates into steam.

[0015] The first heating element is connected to the heat medium storage device, so that the first heat medium is output from the heat medium storage device to the first heating element, and the first heat medium undergoes heat exchange in the first heating element to form a second heat medium.

[0016] The first steam output port of the steam generating element is communicated with the high pressure processor so that the steam in the steam generating element is output to the high pressure processor.

[0017] In one possible implementation, in the geothermal energy utilization system provided in an embodiment of the present application, the steam in the steam turbine generator drives the steam turbine generator to generate electricity to form liquid water, and the second water output port of the steam turbine generator is connected to the first water input port of the steam generating element to allow the water in the steam turbine generator to be output to the steam generating element.

[0018] In one possible implementation, the geothermal energy utilization system provided in an embodiment of the present application further includes a heat exchange component, which is used to provide heat energy to external equipment. The heat exchange component includes at least two heat exchangers, and the heat exchanger includes a second heating element and a heating element. The second heating element is used to increase the temperature of the heating element, and the second heating elements of each heat exchanger are connected in sequence.

[0019] The first heating element is connected to the second heating element so that the second hot working medium is output from the first heating element to the second heating element for heat exchange to form a cold working medium. The second heating element is connected to the cold working medium tank so that the cold working medium is output from the second heating element to the cold working medium tank.

[0020] In one possible implementation, in the geothermal energy utilization system provided by the embodiment of the present application, the high-pressure processor is connected to the second steam input port of the steam turbine generator, and the steam is output to the steam turbine generator to centrally drive the steam turbine generator to generate electricity. The second steam output port of the steam turbine generator is connected to the third steam input port of the heating component, so that the remaining steam after driving the steam turbine generator to generate electricity is output to the heating component. The third water output port of the heating component is connected to the first water input port of the steam generating component, and the steam in the heating component is cooled into liquid water and then output to the steam generating component.

[0021] In one possible implementation, in the geothermal energy utilization system provided in the embodiment of the present application, the thermal working fluid storage device is a thermal working fluid tank.

[0022] In one possible implementation, in the geothermal energy utilization system provided in the embodiment of the present application, the thermal working medium storage device is a thermal mass sealing well.

[0023] In one possible implementation, in the geothermal energy utilization system provided in the embodiment of the present application, mechanical wheels, steel strands and blocks are arranged in the thermal mass sealing well.

[0024] The object abuts against the inner wall of the thermal mass sealing well, one end of the steel strand is connected to the object, and the other end of the steel strand is connected to the mechanical wheel. When the object rises, the mechanical wheel rotates to wrap the steel strand around the mechanical wheel.

[0025] The mechanical wheel is connected to the mechanical generator. When the object descends, the object drives the mechanical wheel to rotate through the steel wire rope, thereby driving the mechanical generator to generate electricity.

[0026] In one possible implementation, in the geothermal energy utilization system provided in an embodiment of the present application, the working fluid input port and the working fluid output port of the thermal mass sealing well are located at the bottom of the thermal mass sealing well.

[0027] The first thermal working medium in the geothermal well is output to the thermal sealing well, and the object is squeezed and lifted up; after the first thermal working medium in the thermal sealing well is output, the object falls down due to the action of gravity.

[0028] In one possible implementation, in the geothermal energy utilization system provided in the embodiment of the present application, check valves are installed at both the working fluid inlet and the working fluid outlet of the thermal mass sealing well.

[0029] The embodiment of the present application provides a geothermal energy utilization system, including a cold working fluid tank, a geothermal well, a hot working fluid storage device, a steam generator, a high-pressure processor and a steam turbine generator. The cold working fluid is output from the cold working fluid tank to the geothermal well and forms a first hot working fluid after heat exchange. The first hot working fluid is output from the geothermal well to the hot working fluid storage device, and then output from the hot working fluid storage device to the steam generator, so that the water in the steam generator evaporates into steam. The steam is pressurized by the high-pressure processor and output to the steam turbine generator to generate electricity. Geothermal energy is converted into mechanical energy and then into electrical energy to achieve geothermal energy generation. By pressurizing the steam, the speed of the generator can be increased, thereby effectively improving the power generation efficiency. In addition, the embodiment of the present application is also provided with a heat exchange component. The first hot working fluid forms a second hot working fluid after heat exchange in the steam generator. The second hot working fluid enters the heat exchange component and undergoes heat exchange again for external heating, further improving the energy utilization efficiency of geothermal energy and reducing the loss of heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a schematic structural diagram of a geothermal energy utilization system provided in an embodiment of the present application;

[0032] FIG2 is a schematic structural diagram of the heat exchanger in FIG1 ;

[0033] FIG3 is a schematic diagram of the connected structure of the steam generator, heat exchange assembly, high pressure processor and steam turbine generator in FIG1;

[0034] FIG4 is a schematic structural diagram of a geothermal energy utilization system provided by another embodiment of the present application;

[0035] FIG5 is a schematic structural diagram of the thermal mass sealing well in FIG4 .

[0036] Explanation of Reference Numerals: 100 - Geothermal Energy Utilization System; 110 - Cold Working Fluid Tank; 120 - Geothermal Well; 130 - Hot Working Fluid Storage Device; 131 - Hot Working Fluid Tank; 132 - Hot Mass Sealing Well; 1321 - Mechanical Wheel; 1322 - Steel Strand; 1323 - Object; 1324 - Working Fluid Inlet; 1325 - Working Fluid Outlet; 1326 - Check Valve; 140 - Steam Generator; 141 - First Heating Element; 142 - Steam Generating Element; 1421 - First Steam Outlet; 1422 - First Water Inlet; 150 - High-Pressure Processor; 160 - Steam Turbine Generator; 161 - Second Water Outlet; 162 - Second Steam Inlet; 163 - Second Steam Outlet; 170 - heat exchange assembly; 171 - heat exchanger; 1711 - second heating element; 1712 - heating element; 1712a - third steam input port; 1712b - third water output port; 180 - mechanical generator.

[0037] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0039] As shown in the background technology, in the existing technology, geothermal wells are built to obtain high-pressure hot water from deep underground, and the high-pressure hot water is converted into steam, thereby utilizing geothermal energy to generate electricity. However, the power generation efficiency of this method is low, the applicability is poor, and the geothermal energy loss during the power generation process is large, and the utilization rate of geothermal energy is low.

[0040] In response to the above technical problems, an embodiment of the present application provides a geothermal energy utilization system, including a cold working fluid tank, a geothermal well, a hot working fluid storage device, a steam generator, a high-pressure processor, and a steam turbine generator. The cold working fluid in the cold working fluid tank is first output to the geothermal well for heat exchange to form a first hot working fluid. The first hot working fluid is output to the hot working fluid storage device, and then output from the hot working fluid storage device to the steam generator, so that the water in the steam generator is heated and evaporated into steam. The steam is output to the high-pressure processor for pressurization, and the obtained high-pressure steam is output to the steam turbine generator to drive the steam turbine to rotate and generate electricity. By providing a hot working fluid storage device to store the first hot working fluid, the loss of heat energy during the working fluid transmission process can be reduced. By pressurizing the steam, the speed of the steam turbine can be increased, thereby improving the efficiency of power generation. In addition, the geothermal energy utilization system of the embodiment of the present application also includes a heat exchange component. The first thermal medium is converted into a second thermal medium after heat exchange in the steam generator. The second thermal medium is output to the component for heat exchange to provide thermal energy for external equipment, thereby realizing the secondary utilization of geothermal energy, reducing heat energy loss, and improving energy utilization.

[0041] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The following embodiments of the present application are described in conjunction with the accompanying drawings:

[0042] 1 , the geothermal energy utilization system 100 of the embodiment of the present application includes a cold working medium tank 110 , a geothermal well 120 , a hot working medium storage device 130 , a steam generator 140 , a high pressure processor 150 and a steam turbine generator 160 .

[0043] The cold working medium tank 110 is used to store cold working medium. The cold working medium tank 110 is connected to the geothermal well 120 and outputs the cold working medium in the cold working medium tank 110 to the geothermal well 120 for heat exchange to form a first hot working medium.

[0044] The geothermal well 120 is in communication with the thermal medium storage device 130 , and outputs the first thermal medium in the geothermal well 120 to the thermal medium storage device 130 .

[0045] The thermal medium storage device 130 is in communication with the steam generator 140 , and the first thermal medium in the thermal medium storage device 130 is output to the steam generator 140 for heat exchange, so that the liquid water in the steam generator 140 evaporates into steam.

[0046] The steam generator 140 is in communication with the high pressure processor 150 , and outputs steam in the steam generator 140 to the high pressure processor 150 for pressurization.

[0047] The high-pressure processor 150 is in communication with the steam turbine generator 160 , so that the steam in the high-pressure processor 150 is output to the steam turbine generator 160 to drive the steam turbine generator 160 to generate electricity.

[0048] It should be noted that the cold working fluid stored in the cold working fluid tank 110 can be different fluids such as water, molten salt, nanofluid, etc. Geothermal energy is stored in permeable strata deep underground. As the depth increases, the underground temperature also increases. Therefore, it is necessary to select cold working fluids with different melting points and boiling points according to the depth of the geothermal well 120 and the underground temperature to improve the applicability of the geothermal energy utilization system. In addition, the transportation process of the working fluid is based on the positional relationship between the cold working fluid tank 110, the geothermal well 120, the hot working fluid storage device 130 and the steam generator 140. Whether it is necessary to install a cold working fluid pump or a hot working fluid pump to assist in transportation in the transportation pipeline is selected. This embodiment of the present application does not impose any restrictions on this.

[0049] In a specific implementation, the geothermal well 120 can be transformed from an abandoned oil well with usable geothermal energy, thereby reducing the construction cost of the geothermal energy utilization system. The geothermal energy utilization system of the embodiment of the present application includes multiple geothermal wells 120, and the cold working medium tank 110 is connected to each geothermal well 120. The cold working medium is extracted from the cold working medium tank 110 by a cold working medium pump and output to each geothermal well 120. The first hot working medium may need to be transported over a long distance to the steam generator 140. Each geothermal well 120 is connected to the same hot working medium storage device 130. The geothermal well 120 and the hot working medium storage device 130 are relatively close in distance. After the first hot working medium in each geothermal well 120 is output to the hot working medium storage device 130, it is transported from the hot working medium storage device 130 to the steam generator 140. This can reduce the heat energy loss in the transmission pipeline during the long-distance transmission of the first hot working medium and improve the utilization rate of geothermal energy.

[0050] Specifically, a temperature-controlled valve can be installed on the pipeline that outputs the first hot working medium from geothermal well 120. After the cold working medium in cold working medium tank 110 is output into geothermal well 120, its temperature gradually increases to form the first hot working medium. When the temperature-controlled valve detects that the working medium in geothermal well 120 is greater than or equal to a preset temperature, the temperature-controlled valve opens, and the first hot working medium is output to hot working medium storage device 130. This ensures the temperature of the first hot working medium output to steam generator 140, thereby ensuring power generation efficiency.

[0051] In addition, since the temperature in the geothermal well 120 is constant, the temperature of the working fluid no longer changes after a period of heat exchange in the geothermal well 120. The valve at the pipeline for outputting the first hot working fluid from the geothermal well 120 can also be a timed valve. After the cold working fluid is output to the geothermal well 120, the timed valve starts timing, and the valve automatically opens after a preset period of time. In this way, the temperature of the first hot working fluid is controlled to improve energy utilization and power generation efficiency.

[0052] In this embodiment of the present application, geothermal energy is converted into mechanical energy through steam generator 140 and high-pressure processor 150, and steam turbine generator 160 converts the mechanical energy into electrical energy, thereby achieving the effect of utilizing geothermal energy for power generation. The steam generated by steam generator 140 is pressurized by high-pressure processor 150 and then output to turbine generator 160 to drive turbine generator 160 for power generation. This increases the turbine's speed and thus improves power generation efficiency.

[0053] In some achievable embodiments, referring to FIG. 1 and FIG. 3 , the steam generator 140 of an embodiment of the present application includes a first heating element 141 and a steam generating element 142 , wherein the first heating element 141 is used to increase the temperature of the steam generating element 142 so that the liquid water in the steam generating element 142 evaporates into steam.

[0054] The first heating element 141 is in communication with the heat medium storage device 130 , so that the first heat medium is output from the heat medium storage device 130 to the first heating element 141 , and the first heat medium undergoes heat exchange in the first heating element 141 to form a second heat medium.

[0055] The first steam output port 1421 of the steam generating element 142 is in communication with the high pressure processor 150 , so that the steam in the steam generating element 142 is output to the high pressure processor 150 .

[0056] In an embodiment of the present application, the steam generator 140 includes a first heating element 141 and a steam generating element 142. Liquid water is stored in the steam generating element 142. After the first thermal working medium is input into the first heating element 141, the water in the steam generating element 142 is heated by the first heating element 141. The water evaporates into steam due to the heat. At the same time, the temperature of the existing steam in the steam generating element 142 can be increased, and part of the thermal energy of the first thermal working medium is transferred to the steam, thereby realizing the first utilization of geothermal energy. The temperature of the first thermal working medium is reduced to form a second thermal working medium.

[0057] In a specific implementation, after steam is generated in the steam generating element 142 , the steam is transported to the high-pressure processor through the first steam output port 1421 for pressurized treatment, so that the steam is more suitable for power generation and the steam power generation efficiency is improved.

[0058] In some feasible embodiments, as shown in Figures 1 and 3, the steam in the steam turbine generator 160 of the embodiment of the present application drives the steam turbine generator 160 to generate electricity to form liquid water, and the second water output port 161 of the steam turbine generator 160 is connected to the first water input port 1422 of the steam generating element 142, so that the water in the steam turbine generator 160 is output to the steam generating element 142.

[0059] It should be noted that a second water output port 161 is provided at the lower end of the steam turbine generator 160. When the high-pressure steam drives the steam turbine generator 160 to generate electricity, part of the steam is cooled into liquid water. The liquid water enters the steam generating element 142 through the second water output port 161 and the first water input port 1422, waiting to be heated by the first heating element 141 to form steam again, thereby realizing the recycling of water resources, which is beneficial to saving resources and reducing the power generation cost of the geothermal energy utilization system 100.

[0060] In some feasible embodiments, referring to Figures 1, 2 and 3, the geothermal energy utilization system 100 of the embodiment of the present application also includes a heat exchange component 170, which is used to provide heat energy to external equipment. The heat exchange component 170 includes at least two heat exchangers 171, and the heat exchanger 171 includes a second heating element 1711 and a heating element 1712. The second heating element 1711 is used to increase the temperature of the heating element 1712, and the second heating elements 1711 of each heat exchanger 171 are connected in sequence.

[0061] The first heating element 141 is connected to the second heating element 1711 so that the second hot working medium is output from the first heating element 141 to the second heating element 1711 for heat exchange to form a cold working medium. The second heating element 1711 is connected to the cold working medium tank 110 so that the cold working medium is output from the second heating element 1711 to the cold working medium tank 110.

[0062] In the embodiment of the present application, the heat exchange component 170 can realize the secondary utilization of geothermal energy. The heat exchange component 170 is composed of at least two heat exchangers 171. The heat exchanger 171 includes two parts: a second heating element 1711 and a heating element 1712. Liquid water is stored in the heating element 1712. After the second hot working medium is output from the first heating element 141, it flows through the second heating element 1711 of each heat exchanger 171 in sequence, thereby transferring the heat energy in the second hot working medium to the liquid water in the heating element 1712 of each heat exchanger 171, so that the temperature of the water increases, and the temperature of the second hot working medium continues to decrease. After finally forming a cold working medium, the cold working medium is transported to the cold working medium tank 110 to achieve recycling and reduce the cost of geothermal energy utilization. At the same time, by utilizing the thermal energy of the second hot working medium, geothermal energy loss is reduced and energy utilization efficiency is improved.

[0063] In specific implementation, the heating component 1712 is connected to external equipment, such as a radiator, floor radiant heating, etc., to transport water with a higher temperature to the external equipment to provide heat energy for users, and recycle the water with a lower temperature to heat it again for recycling.

[0064] In some feasible embodiments, referring to Figures 1 and 3, the high-pressure processor 150 of the embodiment of the present application is connected to the second steam input port 162 of the steam turbine generator 160, and outputs steam to the steam turbine generator 160 to drive the steam turbine generator 160 to generate electricity. The second steam output port 163 of the steam turbine generator 160 is connected to the third steam input port 1712a of the heating component 1712, so that the remaining steam after driving the steam turbine generator 160 to generate electricity is output to the heating component 1712, and the third water output port 1712b of the heating component 1712 is connected to the first water input port 1422 of the steam generating component 142, and the steam in the heating component 1712 is cooled into liquid water and then output to the steam generating component 142.

[0065] It should be noted that after high-pressure steam enters steam turbine generator 160 to drive steam turbine generator 160 to generate electricity, part of the steam cools to liquid water, while part remains in a gaseous state. At this point, the steam still contains a certain amount of thermal energy. The remaining steam is transported to heating element 1712 through second steam output port 163 and third steam input port 1712a, where it undergoes heat exchange with the water in heating element 1712. The steam cools to liquid water, increasing the amount of liquid water in heating element 1712. The excess liquid water can be output through third water output port 1712b and input into steam generating element 142 through first water input port 1422, thereby recycling the water in steam generator 140 and saving geothermal energy costs. By fully utilizing the residual thermal energy in the steam, the geothermal energy utilization rate of geothermal energy utilization system 100 is further improved, reducing energy losses.

[0066] In some achievable embodiments, as shown in FIG. 1 , the thermal working medium storage device 130 of the embodiment of the present application is a thermal working medium tank 131 .

[0067] In a specific implementation, the thermal working fluid storage device 130 can be a thermal working fluid tank 131. The thermal working fluid tank 131 is made of thermal insulation material and has a large capacity. It can simultaneously accommodate the first thermal working fluid formed in multiple geothermal wells 120, and plays a transitional role in the geothermal energy utilization system, reducing the heat energy loss caused by long-distance transportation of the first thermal working fluid.

[0068] In some achievable embodiments, as shown in FIG. 4 , the thermal working medium storage device 130 of the embodiment of the present application is a thermal mass sealing well 132 .

[0069] In a specific implementation, the thermal working medium storage device 130 may be a thermal mass sealing well 132 , and the thermal mass sealing well 132 may be transformed from an abandoned oil well to reduce the construction cost of the geothermal energy utilization system.

[0070] In some achievable embodiments, referring to FIG. 4 and FIG. 5 , a mechanical wheel 1321 , a steel strand 1322 and a block 1323 are provided in the thermal mass sealing well 132 of the embodiment of the present application.

[0071] Block 1323 abuts against the inner wall of the thermal mass sealing well 132, one end of the steel strand 1322 is connected to block 1323, and the other end of the steel strand 1322 is connected to the mechanical wheel 1321. When block 1323 rises, the mechanical wheel 1321 rotates so that the steel strand 1322 is wrapped around the side of the mechanical wheel 1321.

[0072] The mechanical wheel 1321 is connected to the mechanical generator 180. When the block 1323 descends, the block 1323 drives the mechanical wheel 1321 to rotate through the steel strand 1322, thereby driving the mechanical generator 180 to generate electricity.

[0073] It should be noted that block 1323 can be made of a material having a melting point higher than that of the first thermal fluid, depending on the temperature of the first thermal fluid. The outer wall of block 1323 is tightly fitted against the inner wall of thermal sealing well 132, ensuring that when the first thermal fluid is input into thermal sealing well 132, it cannot escape from the gap between block 1323 and thermal sealing well 132, and the first thermal fluid remains below block 1323. The outer wall of block 1323 and the inner wall of thermal sealing well 132 are both smooth surfaces, ensuring that block 1323 can slide smoothly within thermal sealing well 132.

[0074] In a specific implementation, mechanical wheel 1321 can be connected to a motor, which can drive mechanical wheel 1321 to rotate. When object 1323 moves upward, steel strands 1322 are in a relaxed state and are not subject to tension. Mechanical wheel 1321 gathers steel strands 1322, causing them to wrap around the sides of mechanical wheel 1321. When object 1323 descends under the action of gravity, object 1323 exerts tension on steel strands 1322, which drives mechanical wheel 1321 to rotate in the opposite direction of the gathering steel strands 1322. Mechanical wheel 1321 rotates to drive mechanical generator 180 to generate electricity. This converts gravitational potential energy into electrical energy, improving energy utilization. Mechanical generator 180 can power external devices while also powering electrical equipment within geothermal energy utilization system 100, reducing the need for long-distance transmission of electricity and improving the local consumption rate of electricity.

[0075] In some achievable embodiments, referring to FIG. 4 and FIG. 5 , the working fluid input port 1324 and the working fluid output port 1325 of the thermal mass sealing well 132 in the embodiment of the present application are located at the bottom of the thermal mass sealing well 132 .

[0076] The first thermal fluid in the geothermal well 120 is output to the thermal sealing well 132, and the object 1323 is squeezed and lifted up; after the first thermal fluid in the thermal sealing well 132 is output, the object 1323 falls down due to gravity.

[0077] In the embodiment of the present application, both the working fluid input port 1324 and the working fluid output port 1325 are located at the bottom of the thermal mass sealing well 132, ensuring that the first thermal working fluid is located below the block 1323, thereby preventing the first thermal working fluid from exerting downward pressure on the block 1323. The gravity acting on the first thermal working fluid causes the first thermal working fluid to enter the thermal mass sealing well 132 from the bottom, exerting an upward force on the block 1323, causing the block 1323 to move upward, generating gravitational potential energy. After the first thermal working fluid is output, the block 1323 descends under the action of gravity, and the gravitational potential energy is converted into kinetic energy, which drives the mechanical wheel 1321 to rotate, thereby driving the mechanical generator 180 to generate electricity, converting the kinetic energy into electrical energy. This allows for the storage and utilization of gravitational potential energy, further improving the energy utilization rate and power generation efficiency of the geothermal energy utilization system 100.

[0078] In some achievable embodiments, as shown in FIG. 5 , a check valve 1326 is installed at both the working fluid inlet 1324 and the working fluid outlet 1325 of the thermal mass sealing well 132 in the embodiment of the present application.

[0079] In the embodiment of the present application, the installation of the check valve 1326 can effectively prevent the first thermal medium in the thermal mass sealing well 132 from flowing back due to its own gravity and the pressure of the object 1323, causing damage to the geothermal energy utilization system 100, while ensuring the function of the thermal mass sealing well 132 to store the first thermal medium.

[0080] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0081] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0082] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the embodiments of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0083] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0084] The term "plurality" herein means two or more.

[0085] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0086] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0087] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0088] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A geothermal energy utilization system, characterized in that: It includes cold working fluid tank, geothermal well, hot working fluid storage device, steam generator, high pressure processor and steam turbine generator; The cold working medium tank is used to store cold working medium, the cold working medium tank is connected to the geothermal well, and the cold working medium in the cold working medium tank is output to the geothermal well for heat exchange to form a first hot working medium; The geothermal well is in communication with the thermal medium storage device, and the first thermal medium in the geothermal well is output to the thermal medium storage device; The thermal medium storage device is in communication with the steam generator, and the first thermal medium in the thermal medium storage device is output to the steam generator for heat exchange, so that the liquid water in the steam generator evaporates into steam; The steam generator is in communication with the high pressure processor, and outputs the steam in the steam generator to the high pressure processor for pressurization; The high-pressure processor is in communication with the steam turbine generator, so that the steam in the high-pressure processor is output to the steam turbine generator to drive the steam turbine generator to generate electricity.

2. The geothermal energy utilization system according to claim 1, characterized in that: The steam generator comprises a first heating element and a steam generating element, wherein the first heating element is used to increase the temperature of the steam generating element so as to evaporate the liquid water in the steam generating element into steam; The first heating element is in communication with the heat medium storage device, so that the first heat medium is output from the heat medium storage device to the first heating element, and the first heat medium is heat-exchanged in the first heating element to form a second heat medium; The first steam output port of the steam generating element is communicated with the high pressure processor, so that the steam in the steam generating element is output to the high pressure processor.

3. The geothermal energy utilization system according to claim 2, characterized in that: The steam in the steam turbine generator drives the steam turbine generator to generate electricity to form liquid water. The second water output port of the steam turbine generator is connected to the first water input port of the steam generating element, so that the water in the steam turbine generator is output to the steam generating element.

4. The geothermal energy utilization system according to claim 3, characterized in that: It also includes a heat exchange component, which is used to provide heat energy for external equipment. The heat exchange component includes at least two heat exchangers, and the heat exchanger includes a second heating element and a heating element. The second heating element is used to increase the temperature of the heating element. The second heating elements of each heat exchanger are connected in sequence; The first heating element is connected to the second heating element so that the second hot working medium is output from the first heating element to the second heating element for heat exchange to form the cold working medium. The second heating element is connected to the cold working medium tank so that the cold working medium is output from the second heating element to the cold working medium tank.

5. The geothermal energy utilization system according to claim 4, characterized in that: The high-pressure processor is connected to the second steam input port of the steam turbine generator, and outputs steam to the steam turbine generator to drive the steam turbine generator to generate electricity. The second steam output port of the steam turbine generator is connected to the third steam input port of the heating component, so that the remaining steam after the steam turbine generator generates electricity is output to the heating component. The third water output port of the heating component is connected to the first water input port of the steam generating component, and the steam in the heating component is cooled into liquid water and then output to the steam generating component.

6. The geothermal energy utilization system according to any one of claims 1 to 5, characterized in that: The thermal working medium storage device is a thermal working medium tank.

7. The geothermal energy utilization system according to any one of claims 1 to 5, characterized in that: The thermal working medium storage device is a thermal mass sealing well.

8. The geothermal energy utilization system according to claim 7, characterized in that: The thermal mass sealing well is provided with a mechanical wheel, a steel strand and a block; The object block is in contact with the inner wall of the thermal mass sealing well, one end of the steel strand is connected to the object block, and the other end of the steel strand is connected to the mechanical wheel, and when the object block rises, the mechanical wheel rotates to cause the steel strand to be wound around the mechanical wheel; The mechanical wheel is connected to a mechanical generator. When the object descends, the object drives the mechanical wheel to rotate through the steel strand, thereby driving the mechanical generator to generate electricity.

9. The geothermal energy utilization system according to claim 8, characterized in that: The working fluid input port and the working fluid output port of the thermal mass sealing well are located at the bottom of the thermal mass sealing well; The first thermal medium in the geothermal well is output to the thermal mass sealing well, and the object is squeezed and lifted; after the first thermal medium in the thermal mass sealing well is output, the object falls due to gravity.

10. The geothermal energy utilization system according to claim 9, characterized in that: Check valves are installed at the working fluid input port and the working fluid output port of the thermal mass sealing well.

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