A geothermal energy utilization system

Abstract

The application provides a geothermal energy utilization system, which comprises a cold working medium tank, a geothermal well, a hot working medium storage device, a steam generator, a high-pressure processor and a steam turbine generator; the cold working medium tank is communicated with the geothermal well, and the cold working medium in the cold working medium tank is output to the geothermal well to exchange heat and form a first hot working medium; the geothermal well is communicated with the hot working medium storage device, and the first hot working medium in the geothermal well is output to the hot working medium storage device; the hot working medium storage device is communicated with the steam generator, and the first hot working medium in the hot working medium storage device is output to the steam generator to evaporate water in the steam generator into steam; the steam generator is communicated with the high-pressure processor, and the steam in the steam generator is output to the high-pressure processor; the high-pressure processor is communicated with the steam turbine generator, and the steam in the high-pressure processor is output to the steam turbine generator to drive the steam turbine generator to generate electricity. The geothermal energy utilization system provided by the application improves the utilization efficiency of geothermal energy and has a wide range of applications.

Description

Technical Field

[0001] This application relates to the field of new energy utilization technology, and in particular to a geothermal energy utilization system. Background Technology

[0002] In recent years, with the continuous improvement of science and technology, human beings have gained a new understanding of renewable resources. Geothermal energy, as one of the newly discovered renewable resources, has the characteristics of stability, continuity, and high utilization. When using geothermal resources to generate electricity, it is almost unaffected by the weather and can continuously transmit electricity to the power grid. Geothermal energy is stored deep underground in permeable strata, and the underground temperature increases with depth.

[0003] Most geothermal power plants currently extract high-pressure hot water from deep underground, convert it into steam to drive generators to generate electricity, and then condense the steam into water after cooling, which is then injected underground for reuse.

[0004] However, this type of geothermal power generation requires high groundwater temperature, has poor applicability, and suffers from significant energy loss and low power generation efficiency during the power generation process. Summary of the Invention

[0005] This application provides a geothermal energy utilization system to solve the problems of low efficiency and high energy loss in existing geothermal power generation technologies.

[0006] This application provides a geothermal energy utilization system, including a cold working fluid tank, a geothermal well, a thermal working fluid storage device, a steam generator, a high-pressure processor, and a steam turbine generator.

[0007] The cold working medium tank is used to store the 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 the first hot working medium.

[0008] The geothermal well is connected to a thermal working medium storage device, and the first thermal working medium in the geothermal well is output to the thermal working medium storage device.

[0009] The heat working medium storage device is connected to the steam generator. The first heat working medium in the heat working medium storage device is output to the steam generator for heat exchange, so that the liquid water in the steam generator evaporates into steam.

[0010] The steam generator is connected to the high-pressure processor and outputs the steam from the steam generator to the high-pressure processor for pressurization.

[0011] The high-pressure processor is connected to 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.

[0012] In one possible implementation, the geothermal energy utilization system provided in this application includes a steam generator comprising a first heating element and a steam generating element. 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.

[0013] The first heating element is connected to the heat working medium storage device so that the first heat working medium is output from the heat working medium storage device to the first heating element, and the first heat working medium undergoes heat exchange in the first heating element to form the second heat working medium.

[0014] The first steam outlet of the steam generator is connected to the high-pressure processor so that the steam in the steam generator is output to the high-pressure processor.

[0015] In one possible implementation, the geothermal energy utilization system provided in this application uses steam from a steam turbine generator to generate electricity, which then forms liquid water. The second water outlet of the steam turbine generator is connected to the first water inlet of the steam generator, so that water from the steam turbine generator is output to the steam generator.

[0016] In one possible implementation, the geothermal energy utilization system provided in this application further includes a heat exchange component for providing heat energy to external equipment. The heat exchange component includes at least two heat exchangers, each heat exchanger including 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.

[0017] The first heating element is connected to the second heating element so that the second 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.

[0018] In one possible implementation, the geothermal energy utilization system provided in this application has a high-pressure processor connected to the second steam inlet of a steam turbine generator, which outputs steam to the steam turbine generator to drive it to generate electricity. The second steam outlet of the steam turbine generator is connected to the third steam inlet of a heating element, so that the remaining steam after the steam turbine generator generates electricity is output to the heating element. The third water outlet of the heating element is connected to the first water inlet of a steam generator, and the steam in the heating element is cooled into liquid water and then output to the steam generator.

[0019] In one possible implementation, the geothermal energy utilization system provided in this application uses a thermal medium storage device as a thermal medium tank.

[0020] In one possible implementation, the geothermal energy utilization system provided in this application uses a thermal fluid storage device as a thermal fluid sealed well.

[0021] In one possible implementation, the geothermal energy utilization system provided in this application includes a mechanical wheel, steel strands, and blocks installed inside a thermally sealed well.

[0022] The object abuts against the inner wall of the thermo-sealed 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, causing the steel strand to wrap around the circumference of the mechanical wheel.

[0023] The mechanical wheel is connected to the mechanical generator. When the block descends, the block drives the mechanical wheel to rotate through the steel strand, thereby driving the mechanical generator to generate electricity.

[0024] In one possible implementation, the geothermal energy utilization system provided in this application has the working fluid inlet and working fluid outlet of the thermally sealed well located at the bottom of the thermally sealed well.

[0025] The first working fluid in the geothermal well is output to the thermo-mass sealing well, and the block is compressed and rises; after the first working fluid is output from the thermo-mass sealing well, the block falls under the action of gravity.

[0026] In one possible implementation, the geothermal energy utilization system provided in this application has check valves installed at both the working fluid inlet and outlet of the thermally sealed well.

[0027] This application provides a geothermal energy utilization system, including a cold working fluid tank, a geothermal well, a 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, where it undergoes heat exchange to form a first working fluid. This first working fluid is then output from the geothermal well to the working fluid storage device, and from there to the steam generator. Water in the steam generator evaporates into steam, which is then pressurized by the high-pressure processor and output to the steam turbine generator to generate electricity. Geothermal energy is generated by converting geothermal energy into mechanical energy, and then into electrical energy. Pressurizing the steam increases the generator's speed, thereby effectively improving power generation efficiency. Furthermore, this application includes a heat exchange component. The first working fluid undergoes heat exchange in the steam generator to form a second working fluid, which then enters the heat exchange component for further heat exchange to provide external heating, further improving the energy utilization efficiency of geothermal energy and reducing heat loss. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1This is a schematic diagram of the geothermal energy utilization system provided in the embodiments of this application;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the heat exchanger;

[0031] Figure 3 for Figure 1 A schematic diagram of the interconnected structure of the steam generator, heat exchange components, high-pressure processor, and steam turbine generator;

[0032] Figure 4 A schematic diagram of the structure of a geothermal energy utilization system provided in another embodiment of this application;

[0033] Figure 5 for Figure 4 A schematic diagram of the structure of a medium-temperature sealed well.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Geothermal Energy Utilization System;

[0036] 110 - Cold working fluid tank;

[0037] 120 - Geothermal well;

[0038] 130-Heat medium storage device; 131-Heat medium tank; 132-Heat medium sealing well; 1321-Mechanical wheel; 1322-Steel strand; 1323-Block; 1324-Working medium inlet; 1325-Working medium outlet; 1326-Check valve;

[0039] 140 - Steam generator; 141 - First heating element; 142 - Steam generating element; 1421 - First steam outlet; 1422 - First water inlet;

[0040] 150-High Voltage Processor;

[0041] 160 - Steam turbine generator; 161 - Second water outlet; 162 - Second steam inlet; 163 - Second steam outlet;

[0042] 170 - Heat exchange component; 171 - Heat exchanger; 1711 - Second heating element; 1712 - Heating element; 1712a - Third steam inlet; 1712b - Third water outlet;

[0043] 180-Mechanical generator.

[0044] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0046] As the background technology demonstrates, in the existing technology, geothermal wells are built to obtain high-pressure hot water from deep underground, which is then converted into steam to generate electricity using geothermal energy. However, this method of generating electricity has low power generation efficiency, poor applicability, and significant geothermal energy loss during the power generation process, resulting in low utilization of geothermal energy.

[0047] To address the aforementioned technical problems, this application provides a geothermal energy utilization system, including a cold working fluid tank, a geothermal well, a 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 working fluid. The first working fluid is then output to the working fluid storage device, and subsequently to the steam generator, where water is heated and evaporated into steam. The steam is then output to the high-pressure processor for pressurization, and the resulting high-pressure steam is output to the steam turbine generator to drive the turbine and generate electricity. By setting up a working fluid storage device to store the first working fluid, heat loss during working fluid transfer can be reduced. Pressurizing the steam can increase the turbine speed, thereby improving power generation efficiency. In addition, the geothermal energy utilization system of this application also includes a heat exchange component. The first working fluid exchanges heat in the steam generator to form a second working fluid. The second working fluid is output to the component for heat exchange to provide heat energy to external equipment, realize the secondary utilization of geothermal energy, reduce heat loss, and improve energy utilization efficiency.

[0048] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings:

[0049] See Figure 1 As shown, the geothermal energy utilization system 100 of this application embodiment includes a cold working fluid tank 110, a geothermal well 120, a thermal working fluid storage device 130, a steam generator 140, a high-pressure processor 150, and a steam turbine generator 160.

[0050] The cold working medium tank 110 is used to store the 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 the first thermal working medium.

[0051] The geothermal well 120 is connected to the thermal working medium storage device 130, and the first thermal working medium in the geothermal well 120 is output to the thermal working medium storage device 130.

[0052] The heat working medium storage device 130 is connected to the steam generator 140. The first heat working medium in the heat working 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.

[0053] The steam generator 140 is connected to the high-pressure processor 150, and outputs the steam in the steam generator 140 to the high-pressure processor 150 for pressurization.

[0054] The high-voltage processor 150 is connected to the steam turbine generator 160 so that the steam in the high-voltage processor 150 is output to the steam turbine generator 160 to drive the steam turbine generator 160 to generate electricity.

[0055] It should be noted that the cold working medium stored in the cold working medium tank 110 can be different fluids such as water, molten salt, and nanofluids. Geothermal energy is stored deep underground in permeable strata. As the depth increases, the underground temperature also increases. Therefore, it is necessary to select cold working media with different melting and boiling points according to the depth of the geothermal well 120 and the different underground temperatures to improve the applicability of the geothermal energy utilization system. In addition, the transportation process of the working medium depends on the positional relationship between the cold working medium tank 110, the geothermal well 120, the hot working medium storage device 130, and the steam generator 140. It is possible to choose whether to install a cold working medium pump or a hot working medium pump to assist in the transportation pipeline. This application does not impose any restrictions on this.

[0056] In practical implementation, the geothermal well 120 can be converted 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 this application includes multiple geothermal wells 120. A cold working fluid tank 110 is connected to each geothermal well 120. A cold working fluid pump extracts the cold working fluid from the cold working fluid tank 110 and outputs it to each geothermal well 120. The first working fluid may need to be transported over a long distance to the steam generator 140. Each geothermal well 120 is connected to the same working fluid storage device 130. The geothermal wells 120 and the working fluid storage device 130 are relatively close in location. After the first working fluid from each geothermal well 120 is output to the working fluid storage device 130, it is then transported from the working fluid storage device 130 to the steam generator 140. This reduces heat loss in the transport pipeline during the long-distance transport of the first working fluid, improving the utilization rate of geothermal energy.

[0057] Specifically, a temperature control valve can be installed at the pipeline outputting the first working fluid from the geothermal well 120. After the cold working fluid in the cold working fluid tank 110 is output into the geothermal well 120, its temperature gradually rises to form the first working fluid. When the temperature control valve detects that the working fluid in the geothermal well 120 is greater than or equal to a preset temperature, the temperature control valve opens, and the first working fluid is output to the working fluid storage device 130. This ensures the temperature of the first working fluid output to the steam generator 140, thus ensuring the efficiency of power generation.

[0058] Furthermore, 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 that outputs the first 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. After a preset time, the valve automatically opens. In this way, the temperature of the first working fluid is controlled to improve energy utilization and power generation efficiency.

[0059] In this application, geothermal energy is converted into mechanical energy through a steam generator 140 and a high-pressure processor 150, and then the mechanical energy is converted into electrical energy through a steam turbine generator 160, thus achieving the effect of generating electricity using geothermal energy. The high-pressure processor 150 pressurizes the steam generated in the steam generator 140 and outputs it to the steam turbine generator 160 to drive the generator, thereby increasing the turbine's speed and improving power generation efficiency.

[0060] See also some of the possible implementation methods. Figure 1 and Figure 3 As shown, the steam generator 140 of this application embodiment includes a first heating element 141 and a steam generator 142. The first heating element 141 is used to increase the temperature of the steam generator 142 so that the liquid water in the steam generator 142 evaporates into steam.

[0061] The first heating element 141 is connected to the heat working medium storage device 130 so that the first heat working medium is output from the heat working medium storage device 130 to the first heating element 141, and the first heat working medium undergoes heat exchange in the first heating element 141 to form the second heat working medium.

[0062] The first steam output port 1421 of the steam generator 142 is connected to the high-pressure processor 150 so that the steam in the steam generator 142 is output to the high-pressure processor 150.

[0063] In this application, the steam generator 140 includes a first heating element 141 and a steam generator 142. The steam generator 142 contains liquid water. After the first working medium is input into the first heating element 141, the water in the steam generator 142 is heated by the first heating element 141, and the water evaporates into steam. At the same time, the temperature of the existing steam in the steam generator 142 can be increased, and part of the heat energy of the first working medium is transferred to the steam, realizing the first utilization of geothermal energy. The temperature of the first working medium decreases to form a second working medium.

[0064] In a specific implementation, after steam is generated in the steam generator 142, the steam is transported to the high-pressure processor through the first steam output port 1421 for pressurization, so that the steam is more suitable for power generation and the steam power generation efficiency is improved.

[0065] See also some of the possible implementation methods. Figure 1 and Figure 3 As shown, in this embodiment of the application, the steam in the steam turbine generator 160 drives the steam turbine generator 160 to generate electricity and form liquid water. The second water outlet 161 of the steam turbine generator 160 is connected to the first water inlet 1422 of the steam generator 142 so that the water in the steam turbine generator 160 is output to the steam generator 142.

[0066] It should be noted that the lower end of the steam turbine generator 160 is provided with a second water outlet 161. 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 generator 142 through the second water outlet 161 and the first water inlet 1422, waiting for the first heating element 141 to heat it again to form steam, realizing the recycling of water resources, which is conducive to saving resources and reducing the power generation cost of the geothermal energy utilization system 100.

[0067] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, the geothermal energy utilization system 100 of this application embodiment 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. Each 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. The second heating elements 1711 of each heat exchanger 171 are connected in sequence.

[0068] The first heating element 141 is connected to the second heating element 1711 so that the second 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.

[0069] In this application, the heat exchange component 170 enables the secondary utilization of geothermal energy. The heat exchange component 170 consists of at least two heat exchangers 171, each comprising a second heating element 1711 and a heating element 1712, with liquid water stored in the heating element 1712. The second working fluid, after being output from the first heating element 141, flows sequentially through the second heating elements 1711 of each heat exchanger 171, thereby transferring the heat energy from the second working fluid to the liquid water in the heating elements 1712 of each heat exchanger 171. This causes the water temperature to rise, while the temperature of the second working fluid continuously decreases, eventually forming a cold working fluid. This cold working fluid is then transported to a cold working fluid tank 110 for recycling, reducing the cost of geothermal energy utilization. Simultaneously, by utilizing the heat energy of the second working fluid, geothermal energy loss is reduced, and energy utilization efficiency is improved.

[0070] In practice, the heating element 1712 is connected to external equipment, such as radiators or floor radiant heating, to deliver hot water to the external equipment, providing heat energy to the user, and to recycle the cooled water for reheating.

[0071] See also some of the possible implementation methods. Figure 1 and Figure 3 As shown, in this embodiment of the application, the high-pressure processor 150 is connected to the second steam inlet 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 outlet 163 of the steam turbine generator 160 is connected to the third steam inlet 1712a of the heating element 1712 so that the remaining steam after driving the steam turbine generator 160 to generate electricity is output to the heating element 1712. The third water outlet 1712b of the heating element 1712 is connected to the first water inlet 1422 of the steam generator 142. The steam in the heating element 1712 is cooled into liquid water and then output to the steam generator 142.

[0072] It should be noted that after the high-pressure steam enters the steam turbine generator 160 to drive the generator to generate electricity, part of the steam is cooled into liquid water, while part remains gaseous. At this point, the steam still possesses a certain amount of thermal energy. The remaining steam is transported to the heating element 1712 through the second steam outlet 163 and the third steam inlet 1712a, where it exchanges heat with the water. The steam is cooled into liquid water, increasing the amount of liquid water in the heating element 1712. The excess liquid water can be output through the third water outlet 1712b and input into the steam generator 142 through the first water inlet 1422, thus achieving the recycling of water in the steam generator 140 and saving on geothermal energy utilization costs. Simultaneously, by fully utilizing the residual thermal energy in the steam, the geothermal energy utilization rate of the geothermal energy utilization system 100 is further improved, reducing energy loss.

[0073] See also some of the possible implementation methods. Figure 1 As shown, the thermal working fluid storage device 130 in this embodiment of the application is a thermal working fluid tank 131.

[0074] In a specific implementation, the heat working medium storage device 130 can be a heat working medium tank 131. The heat working medium tank 131 is made of heat-insulating material and has a large capacity, which can simultaneously hold the first heat working medium formed in multiple geothermal wells 120. It plays a transitional role in the geothermal energy utilization system and reduces the heat loss caused by long-distance transportation of the first heat working medium.

[0075] See also some of the possible implementation methods. Figure 4 As shown, the thermal fluid storage device 130 in this embodiment of the application is a thermal fluid sealing well 132.

[0076] In a practical implementation, the thermal working fluid storage device 130 can be a thermal fluid sealed well 132, which can be converted from an abandoned oil well to reduce the construction cost of the geothermal energy utilization system.

[0077] See also some of the possible implementation methods. Figure 4 and Figure 5 As shown, in this embodiment of the application, a mechanical wheel 1321, a steel strand 1322, and a block 1323 are provided inside the thermo-mass sealing well 132.

[0078] The block 1323 abuts against the inner wall of the thermo-sealed well 132. One end of the steel strand 1322 is connected to the block 1323, and the other end of the steel strand 1322 is connected to the mechanical wheel 1321. When the block 1323 rises, the mechanical wheel 1321 rotates, causing the steel strand 1322 to wrap around the mechanical wheel 1321.

[0079] 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.

[0080] It should be noted that the material of block 1323 can be selected with a melting point higher than that of the first working medium, depending on the temperature of the first working medium. The outer wall of block 1323 is in close contact with the inner wall of the thermal sealing well 132 to ensure that when the first working medium is introduced into the thermal sealing well 132, the first working medium cannot flow out from the gap between block 1323 and the thermal sealing well 132, and the first working medium is always below block 1323. Both the outer wall of block 1323 and the inner wall of thermal sealing well 132 are smooth planes to ensure that block 1323 can slide smoothly within the thermal sealing well 132.

[0081] In practical implementation, the mechanical wheel 1321 can be connected to a motor, which drives the mechanical wheel 1321 to rotate. When the block 1323 moves upward, the steel strand 1322 is in a slack state and is not under tension. The mechanical wheel 1321 pulls the steel strand 1322 together, causing it to wind around its circumference. When the block 1323 descends under the influence of gravity, it applies tension to the steel strand 1322, causing it to drive the mechanical wheel 1321 to rotate in the opposite direction of pulling the strand. This rotation of the mechanical wheel 1321 drives the mechanical generator 180 to generate electricity. This converts gravitational potential energy into electrical energy, improving energy utilization. The mechanical generator 180 can supply power to external equipment while also supplying power to the internal electrical equipment of the geothermal energy utilization system 100, reducing long-distance power transmission and improving the local consumption rate of electricity.

[0082] See also some of the possible implementation methods. Figure 4 and Figure 5 As shown, in this embodiment of the application, the working fluid inlet 1324 and the working fluid outlet 1325 of the thermo-mass sealing well 132 are located at the bottom of the thermo-mass sealing well 132.

[0083] The first working fluid in the geothermal well 120 is output to the thermo-mass sealing well 132, and the block 1323 is compressed and rises; after the first working fluid is output from the thermo-mass sealing well 132, the block 1323 falls under the action of gravity.

[0084] In this application, both the working fluid inlet 1324 and the working fluid outlet 1325 are located at the bottom of the geothermal sealing well 132. This ensures that the first working fluid is always located below the block 1323, preventing the first working fluid from exerting downward pressure on the block 1323. The gravity acting on the first working fluid does work on it, causing it to enter the geothermal sealing well 132 from the bottom. This exerts an upward force on the block 1323, causing it to move upward and generating gravitational potential energy. After the first working fluid is output, the block 1323 descends under the influence of gravity, converting the gravitational potential energy into kinetic energy. This kinetic energy drives the mechanical wheel 1321 to rotate, thereby driving the mechanical generator 180 to generate electricity, converting the kinetic energy into electrical energy. Thus, the storage and utilization of gravitational potential energy can be achieved, further improving the energy utilization rate and power generation efficiency of the geothermal energy utilization system 100.

[0085] See also some of the possible implementation methods. Figure 5 As shown, in this embodiment of the application, a check valve 1326 is installed at both the working fluid inlet 1324 and the working fluid outlet 1325 of the thermo-mass sealing well 132.

[0086] In this application, the installation of the check valve 1326 can effectively prevent the first thermal working medium in the thermally sealed well 132 from flowing back due to its own weight and the pressure of the block 1323, which would damage the geothermal energy utilization system 100, while ensuring the function of the thermally sealed well 132 in storing the first thermal working medium.

[0087] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0088] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0089] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0090] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0091] In this article, the term "multiple" refers to two or more.

[0092] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0093] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply 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 this application.

[0094] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0095] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A geothermal energy utilization system, characterized in that, This includes a cold working fluid tank, a geothermal well, a thermal working fluid storage device, a steam generator, a high-pressure processor, and a steam turbine generator; The cold working medium tank is used to store the 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. The geothermal well is connected to the thermal working fluid storage device, and the first thermal working fluid in the geothermal well is output to the thermal working fluid storage device; The heat working fluid storage device is connected to the steam generator, and the first heat working fluid in the heat working fluid 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 connected to the high-pressure processor and outputs the steam in the steam generator to the high-pressure processor for pressurization; The high-pressure processor is connected to 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; The thermal working fluid storage device is a thermal fluid sealed well, and a mechanical wheel, steel strand and a block are installed inside the thermal fluid sealed well; the block abuts against the inner wall of the thermal fluid sealed well, one end of the steel strand is connected to the block, and the other end of the steel strand is connected to the mechanical wheel; when the block rises, the mechanical wheel rotates, causing the steel strand to wrap around the periphery of the mechanical wheel. The mechanical wheel is connected to the mechanical generator. When the block descends, the block drives the mechanical wheel to rotate through the steel strand, thereby driving the mechanical generator to generate electricity. The working fluid inlet and working fluid outlet of the thermo-mass sealing well are located at the bottom of the thermo-mass sealing well; When the first working fluid in the geothermal well is output to the thermo-mass sealing well, the block is compressed and rises; after the first working fluid is output from the thermo-mass sealing well, the block falls under the influence of gravity.

2. The geothermal energy utilization system according to claim 1, characterized in that, The steam generator includes a first heating element and a steam generating element. 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. The first heating element is connected to the heat working medium storage device so that the first heat working medium is output from the heat working medium storage device to the first heating element, and the first heat working medium undergoes heat exchange in the first heating element to form a second heat working medium; The first steam output port of the steam generator is connected to the high-pressure processor so that the steam in the steam generator 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 and form liquid water. The second water outlet of the steam turbine generator is connected to the first water inlet of the steam generator so that the water in the steam turbine generator is output to the steam generator.

4. The geothermal energy utilization system according to claim 3, characterized in that, It also includes a heat exchange assembly for providing heat energy to external equipment. The heat exchange assembly includes at least two heat exchangers, each heat exchanger including 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. 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 inlet of the steam turbine generator and outputs steam to the steam turbine generator to drive it to generate electricity. The second steam outlet of the steam turbine generator is connected to the third steam inlet of the heating element so that the remaining steam after the steam turbine generator generates electricity is output to the heating element. The third water outlet of the heating element is connected to the first water inlet of the steam generator. The steam in the heating element is cooled into liquid water and then output to the steam generator.

6. The geothermal energy utilization system according to claim 1, characterized in that, Check valves are installed at both the working fluid inlet and outlet of the thermo-mass sealing well.

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