Geothermal Energy Utilization System

Abstract

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 turbine generator, wherein the cold working fluid tank is in communication with the geothermal well and sends a cold working fluid in the cold working fluid tank to the geothermal well for heat exchange to form a first hot working fluid; the geothermal well is in communication with the hot working fluid storage device and sends the first hot working fluid in the geothermal well to the hot working fluid storage device; the hot working fluid storage device is in communication with the steam generator and sends the first hot working fluid in the hot working fluid storage device to the steam generator so that water in the steam generator evaporates into steam; the steam generator is in communication with the high-pressure processor and sends steam in the steam generator to the high-pressure processor; and the high-pressure processor is in communication with the turbine generator such that the steam in the high-pressure processor is sent to the turbine generator to drive the turbine generator to generate electricity. The geothermal energy utilization system according to the embodiment of the present application improves the utilization efficiency of geothermal energy and has a wide range of applications.

Description

[Technical Field]

[0001] The present 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, humanity has gained a new understanding of renewable resources, and geothermal energy, as one of the newly discovered renewable resources, is stable, continuous, and has a high utilization rate. When generating electricity using geothermal resources, it is hardly affected by weather and can be continuously transmitted to the power grid. Geothermal energy is stored in layers deep underground with permeability, and the temperature underground increases as the depth increases.

[0003] Currently, most geothermal power plants draw high-pressure hot water from deep underground, convert it into steam, which drives a generator to generate electricity, and then cool the steam, condensing it into water, which is then injected underground for reuse.

[0004] However, such geothermal power generation methods have problems such as high requirements for the temperature of the groundwater, poor applicability, large energy loss during power generation, and low power generation efficiency. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide a geothermal energy utilization system to solve the problems in the prior art of low efficiency and high energy loss in power generation using geothermal energy. [Means for solving the problem]

[0006] 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 turbine generator.

[0007] The cold working fluid tank is for storing a cold working fluid, the cold working fluid tank is in communication with the geothermal well, and the cold working fluid in the cold working fluid tank is sent to the geothermal well for heat exchange to form a first hot working fluid.

[0008] The geothermal well communicates with the hot working fluid storage device and delivers the first hot working fluid in the geothermal well to the hot working fluid storage device.

[0009] The hot working fluid storage device is in communication with the steam generator, and sends the first hot working fluid in the hot working fluid storage device 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 sends steam from the steam generator to the high-pressure processor for pressurization.

[0011] The high pressure processor is in communication with the turbogenerator such that steam within the high pressure processor is delivered to the turbogenerator to drive the turbogenerator to produce electricity.

[0012] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, the steam generator includes a first heating element and a steam generating element, and the first heating element is for raising the temperature of the steam generating element so that liquid water in the steam generating element evaporates into steam.

[0013] The first heating element is in communication with the hot working fluid storage device such that the first hot working fluid is delivered from the hot working fluid storage device to the first heating element and the first hot working fluid exchanges heat within the first heating element to form a second hot working fluid.

[0014] The first steam delivery port of the steam generating member communicates with the high-pressure processor so that steam within the steam generating member is delivered to the high-pressure processor.

[0015] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, the steam in the turbine generator becomes liquid water after driving the turbine generator to generate electricity, and the second water outlet of the turbine generator is connected to the first water inlet of the steam generating element so that the water in the turbine generator is delivered to the steam generating element.

[0016] In one possible embodiment, the geothermal energy utilization system provided in the embodiments of the present application further includes a heat exchange assembly for providing thermal energy to external equipment, the heat exchange assembly including at least two heat exchangers, each including a second heating element for increasing the temperature of the heating element and a heating element, and the second heating elements of each heat exchanger are connected in series.

[0017] The first heating element is in communication with the second heating element such that the second hot working fluid is delivered from the first heating element to the second heating element to exchange heat and form a cold working fluid, and the second heating element is in communication with the cold working fluid tank such that the cold working fluid is delivered from the second heating element to the cold working fluid tank.

[0018] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, the high-pressure treatment machine is connected to the second steam inlet of the turbine generator and sends steam to the turbine generator to drive the turbine generator and generate electricity, the second steam outlet of the turbine generator is connected to the third steam inlet of the heating element so that the steam remaining after driving the turbine generator to generate electricity is sent to the heating element, and the third water outlet of the heating element is connected to the first water inlet of the steam generating element, and the steam in the heating element is cooled to liquid water and then sent to the steam generating element.

[0019] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, the hot working fluid storage device is a hot working fluid tank.

[0020] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, the hot working fluid storage device is a hot working fluid sealed well.

[0021] In one possible embodiment, the geothermal energy utilization system provided in the embodiments of the present application includes a mechanical wheel, steel strands, and blocks in a hot-working fluid-tight well.

[0022] The block abuts against the inner wall of the hot-working fluid-tight well, one end of the steel strand is connected to the block, and the other end of the steel strand is connected to a mechanical wheel. When the block rises, the steel strand is wound around the periphery of the mechanical wheel by the rotation of the mechanical wheel.

[0023] The mechanical wheel is connected to a mechanical generator, and when the block descends, the block drives the mechanical wheel via steel strands to rotate, thereby driving the mechanical generator to generate electricity.

[0024] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, the working fluid inlet and working fluid outlet of the hot working fluid seal well are located at the bottom of the hot working fluid seal well.

[0025] When the first hot working fluid in the geothermal well is delivered to the hot working fluid sealing well, the block is pushed up, and when the first hot working fluid in the hot working fluid sealing well is delivered, the block descends due to gravity.

[0026] In one possible embodiment, in the geothermal energy utilization system provided in the embodiments of the present application, check valves are installed at both the working fluid inlet and the working fluid outlet of the hot working fluid sealing well. [Effects of the Invention]

[0027] The geothermal energy utilization system provided in the embodiment of the present application includes a cold working fluid tank, a geothermal well, a hot working fluid storage device, a steam generator, a high-pressure processor, and a turbine generator. The cold working fluid is sent from the cold working fluid tank to the geothermal well and heat-exchanges to form a first hot working fluid. The first hot working fluid is sent from the geothermal well to the hot working fluid storage device and then from the hot working fluid storage device to the steam generator. Water in the steam generator evaporates into steam, and the steam is pressurized by the high-pressure processor and sent to the turbine generator to generate electricity, converting geothermal energy into mechanical energy, which is then converted into electrical energy, thereby generating electricity from geothermal energy. Pressurizing the steam can increase the rotation speed of the generator, effectively improving power generation efficiency. Furthermore, in the embodiment of the present application, a heat exchange assembly is also provided, and the first hot working fluid is heat exchanged in the steam generator to form a second hot working fluid, which enters the heat exchange assembly and exchanges heat again to provide external heating, thereby further improving the energy utilization efficiency of geothermal energy and reducing the loss of thermal energy. [Brief explanation of the drawings]

[0028] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the following will briefly describe the drawings that need to be used in the description of the embodiments or the prior art. It is clear that the drawings in the following description are some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without any creative efforts. [Figure 1] 1 is a structural schematic diagram of a geothermal energy utilization system provided in an embodiment of the present application. [Figure 2] FIG. 2 is a structural schematic diagram of the heat exchanger in FIG. [Figure 3] 2 is a schematic diagram of the communication structure of the steam generator, heat exchange assembly, high-pressure processor, and turbine generator in FIG. 1. FIG. [Figure 4] FIG. 2 is a structural schematic diagram of a geothermal energy utilization system according to another embodiment of the present application. [Figure 5] FIG. 5 is a structural schematic diagram of the hot working fluid sealed well in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0029] Exemplary embodiments of the present application are illustrated by the drawings above and described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the present concepts in any way, but rather to explain the concepts to those skilled in the art by reference to specific embodiments.

[0030] Illustrative embodiments are described in detail herein, examples of which are illustrated in the drawings. When the following description refers to the drawings, identical numerals in different drawings refer to identical or similar elements unless otherwise noted. The embodiments described in the following illustrative examples do not 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.

[0031] As described in the background art, in conventional technology, geothermal energy is utilized to generate electricity by digging geothermal wells, extracting high-pressure hot water from deep underground, and converting the high-pressure hot water into steam. However, when generating electricity using this method, the power generation efficiency is low, the applicability is poor, and there is a large loss of geothermal energy during power generation, resulting in a low utilization rate of geothermal energy.

[0032] To address the above technical challenges, 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 turbine generator. The cold working fluid in the cold working fluid tank is first sent to the geothermal well for heat exchange to form a first hot working fluid. The first hot working fluid is then sent to the hot working fluid storage device and then sent from the hot working fluid storage device to the steam generator, where water in the steam generator receives heat and evaporates into steam. The steam is then sent to the high-pressure processor for pressurization, and the resulting high-pressure steam is sent to the turbine generator to drive the steam turbine to rotate and generate electricity. The provision of a hot working fluid storage device for storing the first hot working fluid reduces thermal energy loss during transportation of the working fluid, and the pressurization of the steam increases the rotation speed of the steam turbine, thereby improving power generation efficiency. Furthermore, the geothermal energy utilization system of the embodiment of the present application further includes a heat exchange assembly, wherein the first hot working fluid forms a second hot working fluid after heat exchange in the steam generator, and the second hot working fluid is sent to the heat exchange assembly for heat exchange to provide thermal energy to external equipment, thereby realizing two-time utilization of geothermal energy, reducing thermal energy loss, and improving energy utilization rate.

[0033] The technical solution of the present application and how it solves the above technical problems will be described in detail in the following specific examples. Some of the following specific examples can be combined with each other, and in some examples, detailed descriptions of the same or similar concepts or processes will be omitted. The following examples will be described with reference to the drawings.

[0034] As shown in FIG. 1, a geothermal energy utilization system 100 according to an embodiment of the present invention includes a cold working fluid tank 110, a geothermal well 120, a hot working fluid storage device 130, a steam generator 140, a high-pressure processor 150, and a turbine generator 160.

[0035] The cold working fluid tank 110 is used to store a cold working fluid, the cold working fluid tank 110 is connected to the geothermal well 120, and the cold working fluid in the cold working fluid tank 110 is sent to the geothermal well 120 for heat exchange to form a first hot working fluid.

[0036] The geothermal well 120 communicates with the hot working fluid storage device 130 and delivers the first hot working fluid in the geothermal well 120 to the hot working fluid storage device 130 .

[0037] The hot working fluid storage device 130 is connected to the steam generator 140, and the first hot working fluid in the hot working fluid storage device 130 is sent to the steam generator 140 for heat exchange so that the liquid water in the steam generator 140 evaporates into steam.

[0038] The steam generator 140 is connected to the high-pressure processor 150, and sends the steam in the steam generator 140 to the high-pressure processor 150 to be pressurized.

[0039] The high pressure processor 150 is in communication with a turbine generator 160 such that steam within the high pressure processor 150 is delivered to the turbine generator 160 to drive the turbine generator 160 to generate electricity.

[0040] The cold working fluid stored in the cold working fluid tank 110 may be various fluids such as water, molten salt, nanofluid, etc. Geothermal energy is stored in permeable strata deep underground, and the temperature underground increases with depth. Therefore, it is necessary to select a cold working fluid with different melting and boiling points according to the depth of the geothermal well 120 and the underground temperature to improve the applicability of this geothermal energy utilization system. Furthermore, in the process of transporting the working fluid, whether a cold working fluid pump or a hot working fluid pump needs to be installed in the transport pipe to support transportation is determined depending on the relative positions of the cold working fluid tank 110, the geothermal well 120, the hot working fluid storage device 130, and the steam generator 140, and this is not limited in the embodiment of the present application.

[0041] In a specific implementation, the geothermal wells 120 may be converted from abandoned oil wells that have 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 a plurality of geothermal wells 120, a cold working fluid tank 110 communicates with each of the geothermal wells 120, and a cold working fluid pump draws cold working fluid from the cold working fluid tank 110 and delivers it to each of the geothermal wells 120. The first hot working fluid may need to be transported long distances to the steam generator 140. Each thermal well 120 is connected to the same hot working fluid storage device 130, and the distance between the geothermal wells 120 and the hot working fluid storage device 130 is relatively short. The first hot working fluid in each thermal well 120 is sent to the hot working fluid storage device 130 and then transported to the steam generator 140 by the hot working fluid storage device 130. This reduces the loss of thermal energy in the transportation piping during the long-distance transportation of the first hot working fluid and improves the utilization rate of geothermal energy.

[0042] Specifically, a temperature control valve may be installed in the pipe for delivering the first hot working fluid from the geothermal well 120, and the cold working fluid in the cold working fluid tank 110 gradually increases in temperature after being delivered to the geothermal well 120 to form a first hot working fluid. When the temperature control valve detects that the temperature of the working fluid in the geothermal well 120 is equal to or higher than a preset temperature, the temperature control valve is turned on and the first hot working fluid is delivered to the hot working fluid storage device 130. This ensures the temperature of the first hot working fluid delivered to the steam generator 140 and ensures power generation efficiency.

[0043] Furthermore, since the temperature inside the geothermal well 120 is constant, the temperature of the working fluid will not change after a certain period of heat exchange in the geothermal well 120. A timer valve can be selected as the valve in the pipe that delivers the first hot working fluid from the geothermal well 120. The timer valve starts timing after the cold working fluid is delivered to the geothermal well 120 and automatically opens after the preset time has elapsed. Controlling the temperature of the first hot working fluid in this manner improves energy utilization rate and power generation efficiency.

[0044] In the embodiment of the present application, geothermal energy is converted into mechanical energy by the steam generator 140 and the high-pressure processor 150, and the mechanical energy is converted into electrical energy by the turbine generator 160, thereby realizing the effect of generating electricity using geothermal energy. The steam generated in the steam generator 140 is pressurized by the high-pressure processor 150 and then sent to the turbine generator 160 to drive the turbine generator 160 to generate electricity, thereby increasing the rotation speed of the steam turbine and improving power generation efficiency.

[0045] In some possible embodiments, as shown in Figures 1 and 3, the steam generator 140 of the present embodiment includes a first heating element 141 and a steam generating element 142, and the first heating element 141 is for increasing the temperature of the steam generating element 142 so that liquid water in the steam generating element 142 evaporates into steam.

[0046] The first heating element 141 is connected to the hot working fluid storage device 130 so that the first hot working fluid is delivered from the hot working fluid storage device 130 to the first heating element 141 and the first hot working fluid exchanges heat within the first heating element 141 to form a second hot working fluid.

[0047] The first steam delivery port 1421 of the steam generating member 142 communicates with the high-pressure processor 150 so that the steam in the steam generating member 142 is delivered to the high-pressure processor 150 .

[0048] In the embodiment of the present application, the steam generator 140 includes a first heating element 141 and a steam generating element 142, in which liquid water is stored. After the first hot working fluid is sent to the first heating element 141, the first heating element 141 heats the water in the steam generating element 142, and the water evaporates into steam when heated, and the temperature of the existing steam in the steam generating element 142 is also increased, and part of the thermal energy of the first hot working fluid is transferred to the steam, thereby realizing the first utilization of geothermal energy. The temperature of the first hot working fluid is reduced, and a second hot working fluid is formed.

[0049] Specifically, when implemented, after steam is generated within the steam generating member 142, the steam is transported to the high-pressure processing machine through the first steam outlet 1421 and pressurized, making the steam more suitable for power generation and improving the power generation efficiency of the steam.

[0050] In some possible embodiments, as shown in Figures 1 and 3, the steam in the turbine generator 160 of the embodiment of the present application drives the turbine generator 160 to generate electricity and then becomes liquid water, and the second water outlet 161 of the turbine generator 160 is connected to the first water inlet 1422 of the steam generating element 142 so that the water in the turbine generator 160 is delivered to the steam generating element 142.

[0051] In addition, a second water outlet 161 is provided at the lower end of the turbine generator 160. After the high-pressure steam drives the turbine generator 160 to generate electricity, part of the steam is cooled to liquid water. This liquid water passes through the second water outlet 161 and the first water inlet 1422 and enters the steam generating element 142, where it waits to be heated by the first heating element 141 and converted back into steam. This realizes water resource recycling, which is advantageous for resource conservation and reduces the power generation costs of the geothermal energy utilization system 100.

[0052] In some possible embodiments, as shown in Figures 1, 2, and 3, the geothermal energy utilization system 100 of the present embodiment further includes a heat exchange assembly 170 for providing thermal energy to external equipment, and the heat exchange assembly 170 includes at least two heat exchangers 171, and the heat exchanger 171 includes a second heating element 1711 and a heating element 1712, and the second heating element 1711 is for increasing the temperature of the heating element 1712, and the second heating elements 1711 of each heat exchanger 171 are connected in series.

[0053] The first heating element 141 is connected to the second heating element 1711 so that the second hot working fluid is pumped from the first heating element 141 to the second heating element 1711 for heat exchange to form a cold working fluid, and the second heating element 1711 is connected to the cold working fluid tank 110 so that the cold working fluid is pumped from the second heating element 1711 to the cold working fluid tank 110.

[0054] In this embodiment, the heat exchange assembly 170 enables two-time utilization of geothermal energy. The heat exchange assembly 170 includes at least two heat exchangers 171. Each 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. The second hot working fluid is sent from the first heating element 141 and flows sequentially through the second heating elements 1711 of each heat exchanger 171. The second hot working fluid transfers its thermal energy to the liquid water in the heating element 1712 of each heat exchanger 171, raising the temperature of the water. The temperature of the second hot working fluid gradually decreases, eventually forming a cold working fluid. The cold working fluid is then transported to the cold working fluid tank 110, realizing recycling and reducing the utilization cost of geothermal energy. Furthermore, utilizing the thermal energy of the second hot working fluid reduces geothermal energy loss and improves energy utilization efficiency.

[0055] When specifically implemented, the heating element 1712 is connected to an external device such as a radiator or radiant floor heating, transports high-temperature water to the external device to provide heat energy to the user, and collects cooled water to be reheated and recycled.

[0056] In some possible embodiments, as shown in Figures 1 and 3, the high-pressure treatment machine 150 of an embodiment of the present application is connected to the second steam inlet 162 of the turbine generator 160 and sends steam to the turbine generator 160 to drive the turbine generator 160 to generate electricity, the second steam outlet 163 of the turbine generator 160 is connected to the third steam inlet 1712a of the heating element 1712 so that the steam remaining after driving the turbine generator 160 to generate electricity is sent to the heating element 1712, and the third water outlet 1712b of the heating element 1712 is connected to the first water inlet 1422 of the steam generating element 142, and the steam in the heating element 1712 is cooled to liquid water and then sent to the steam generating element 142.

[0057] After the high-pressure steam enters the turbine generator 160 to drive it and generate electricity, some of the steam cools to liquid water, while the other part remains in gaseous form. The remaining steam is transported to the heating element 1712 via the second steam outlet 163 and the third steam inlet 1712a. The remaining steam exchanges heat with the water in the heating element 1712, cooling it to liquid water. This increases the amount of liquid water in the heating element 1712. The excess liquid water can be discharged via the third water outlet 1712b and sent to the steam generating element 142 via the first water inlet 1422. This recycles the water in the steam generator 140, reducing the cost of geothermal energy utilization. Furthermore, fully utilizing the residual thermal energy in the steam further improves the geothermal energy utilization efficiency of the geothermal energy utilization system 100 and reduces energy loss.

[0058] In some possible implementations, the hot working fluid storage device 130 of the present embodiment is a hot working fluid tank 131, as shown in FIG.

[0059] In specific implementation, the hot working fluid storage device 130 may be a hot working fluid tank 131, which is made of heat-insulating material and has a large capacity, and can simultaneously store the first hot working fluid formed in multiple geothermal wells 120, playing a transitional role in the geothermal energy utilization system and reducing the loss of thermal energy caused by long-distance transportation of the first hot working fluid.

[0060] In some possible implementations, as shown in FIG. 4, the hot working fluid storage device 130 of the present embodiment is a hot working fluid sealed well 132.

[0061] In a specific implementation, the hot working fluid storage device 130 may be a hot working fluid sealed well 132, which may be a converted waste oil well to reduce the construction costs of the geothermal energy utilization system.

[0062] In some possible embodiments, as shown in FIGS. 4 and 5, a mechanical wheel 1321, a steel strand 1322, and a block 1323 are provided in the hot working fluid sealed well 132 of the present embodiment.

[0063] The block 1323 abuts against the inner wall of the hot-working fluid-tight 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 a mechanical wheel 1321. When the block 1323 rises, the rotation of the mechanical wheel 1321 causes the steel strand 1322 to be wound around the periphery of the mechanical wheel 1321.

[0064] The mechanical wheel 1321 is connected to the mechanical generator 180, and when the block 1323 descends, the block 1323 drives the mechanical wheel 1321 to rotate via the steel strands 1322, thereby driving the mechanical generator 180 to generate electricity.

[0065] In addition, the block 1323 may be made of a material whose melting point is higher than the temperature of the first hot working fluid, depending on the temperature of the first hot working fluid. The outer wall of the block 1323 is in close contact with the inner wall of the hot working fluid seal well 132, so that when the first hot working fluid is sent into the hot working fluid seal well 132, the first hot working fluid cannot flow out from the gap between the block 1323 and the hot working fluid seal well 132, ensuring that the first hot working fluid is always below the block 1323. Both the outer wall of the block 1323 and the inner wall of the hot working fluid seal well 132 have smooth surfaces so that the block 1323 can slide smoothly within the hot working fluid seal well 132.

[0066] In a specific implementation, the mechanical wheel 1321 may be connected to a motor, which can drive and rotate the mechanical wheel 1321. When the block 1323 moves upward, the steel strand 1322 is in a slack state and is not subjected to tension, and the steel strand 1322 is wound around the periphery of the mechanical wheel 1321 by the mechanical wheel 1321. When the block 1323 descends due to gravity, tension is applied to the steel strand 1322 by the block 1323, and the mechanical wheel 1321 is driven by the steel strand 1322 to rotate in the direction opposite to the direction in which the steel strand 1322 is wound, which rotates the mechanical wheel 1321 and drives the mechanical generator 180 to generate electricity. This realizes the conversion of gravitational potential energy into electrical energy and improves energy utilization efficiency. The mechanical generator 180 can power external equipment as well as electrical equipment within the geothermal energy utilization system 100, reducing long-distance transportation of electrical energy and improving the on-site consumption rate of electrical energy.

[0067] In some possible embodiments, as shown in Figures 4 and 5, the working fluid inlet 1324 and the working fluid outlet 1325 of the hot working fluid seal well 132 of the embodiment of the present application are located at the bottom of the hot working fluid seal well 132.

[0068] When the first hot working fluid in the geothermal well 120 is pumped into the hot working fluid sealing well 132, the block 1323 is pushed up, and when the first hot working fluid in the hot working fluid sealing well 132 is pumped out, the block 1323 descends due to gravity.

[0069] In the embodiment of the present application, both the working fluid inlet 1324 and the working fluid outlet 1325 are provided at the bottom of the hot working fluid seal well 132, thereby ensuring that the first hot working fluid is located entirely below the block 1323 and preventing the first hot working fluid from applying a downward force to the block 1323. The first hot working fluid enters the hot working fluid seal well 132 from the bottom of the hot working fluid seal well 132 and applies an upward force to the block 1323, causing the block 1323 to move upward and generate gravitational potential energy. The gravity exerted by the first hot working fluid does work on it, and after the first hot working fluid is discharged, the block 1323 descends due to 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 and 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.

[0070] In some possible 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 hot working fluid seal well 132 of the embodiment of the present application.

[0071] In this embodiment, by installing the check valve 1326, damage to the geothermal energy utilization system 100 caused by the first hot working fluid in the hot working fluid sealing well 132 flowing backward due to its own gravity or the pressure of the block 1323 can be effectively avoided, and the storage function of the first hot working fluid in the hot working fluid sealing well 132 can be ensured.

[0072] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, an indirect connection via an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art will be able to understand the specific meanings of the above terms in the embodiments of the present application depending on the specific circumstances.

[0073] The examples herein do not necessarily indicate or imply that the devices or elements shown have a particular orientation or are configured or operated in a particular orientation, and therefore cannot be understood as limiting the present invention. In the description of the examples herein, "plurality" means two or more unless otherwise precisely and specifically specified.

[0074] Terms such as "first," "second," "third," "fourth," etc. (when present) in the description and claims of the embodiments of this application, and in the drawings, are terms used to distinguish between similar objects and are not necessarily used to describe a particular order or priority. It should be understood that such terms may be interchanged under appropriate circumstances, such that, for example, the embodiments of this application described herein may be practiced in an order other than that illustrated or described herein.

[0075] Furthermore, the terms "comprises" and "having," and any variations thereof, are intended to cover an exclusive inclusion, including, for example, a process, method, system, product, or apparatus that includes a series of steps or units, which are not limited to the steps or units expressly listed, but may include other steps or units not expressly listed or inherent in the process, method, product, or apparatus.

[0076] As used herein, "plurality" means two or more.

[0077] It should be understood that the various numerals in the embodiments of the present application are distinguished for convenience of explanation and are not intended to limit the scope of the embodiments of the present application.

[0078] In the embodiments of the present application, it is understood that the magnitude of the numbers of the above processes does not indicate the order of execution, and the order of execution of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0079] Other embodiments of the present application will be readily apparent to those skilled in the art 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 its general principles and include common knowledge or customary means known in the art but not disclosed herein. The specification and examples are considered exemplary, with the true scope and spirit of the present application being indicated by the following claims.

[0080] It should be understood that the present application is not limited to the exact construction described above and illustrated in the drawings, and that various modifications and variations are possible without departing from the scope thereof, which is limited only by the appended claims.

[0081] This application claims priority from a Chinese patent application bearing application number 202310927986.6 and entitled "Geothermal Energy Utilization System" filed with the China Patent Office on July 26, 2023, the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0082] 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 working fluid sealed well, 1321...mechanical wheel, 1322...steel stranded wire, 1323...block, 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 processing machine 160...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 inlet, 1712b...third water outlet 180...Mechanical generator.

Claims

1. a cold working fluid tank, a geothermal well, a hot working fluid storage device, a steam generator, a high-pressure processor, and a turbine generator; the cold working fluid tank stores a cold working fluid, the cold working fluid tank is in communication with the geothermal well, and the cold working fluid in the cold working fluid tank is sent to the geothermal well for heat exchange to form a first hot working fluid; The geothermal well is in communication with the hot working fluid storage device, and delivers the first hot working fluid in the geothermal well to the hot working fluid storage device; the hot working fluid storage device is in communication with the steam generator, and sends the first hot working fluid in the hot working fluid storage device to the steam generator for heat exchange so that liquid water in the steam generator evaporates into steam; the steam generator is in communication with the high-pressure processor, and sends steam from the steam generator to the high-pressure processor to pressurize it; the high-pressure processor is in communication with the turbine generator such that steam within the high-pressure processor is delivered to the turbine generator to drive the turbine generator to generate electricity; A geothermal energy utilization system characterized by:

2. the steam generator includes a first heating element and a steam generating element, the first heating element being configured to raise the temperature of the steam generating element so that liquid water in the steam generating element evaporates into steam; the first heating element is in communication with the hot working fluid storage device such that the first hot working fluid is delivered from the hot working fluid storage device to the first heating element and the first hot working fluid exchanges heat within the first heating element to form a second hot working fluid; a first steam delivery port of the steam generating member communicating with the high-pressure processor so that steam in the steam generating member is delivered to the high-pressure processor; 2. The geothermal energy utilization system according to claim 1 .

3. The steam in the turbine generator becomes liquid water after driving the turbine generator to generate electricity, and a second water delivery port of the turbine generator is connected to a first water delivery port of the steam generating element so that the water in the turbine generator is delivered to the steam generating element.

3. The geothermal energy utilization system according to claim 2.

4. The system further includes a heat exchange assembly for providing heat energy to an external facility, the heat exchange assembly including at least two heat exchangers, each of the heat exchangers including a second heating element and a heating element, the second heating element for increasing the temperature of the heating element, and the second heating elements of each heat exchanger are sequentially connected to each other; the first heating element is in communication with the second heating element such that the second hot working fluid is delivered from the first heating element to the second heating element to exchange heat and form the cold working fluid, and the second heating element is in communication with the cold working fluid tank such that the cold working fluid is delivered from the second heating element to the cold working fluid tank; 4. The geothermal energy utilization system according to claim 3.

5. The high-pressure treatment machine is connected to the second steam inlet of the turbine generator and sends steam to the turbine generator to drive the turbine generator and generate electricity, the second steam outlet of the turbine generator is connected to the third steam inlet of the heating element so that steam remaining after driving the turbine generator to generate electricity is sent to the heating element, and the third water outlet of the heating element is connected to the first water inlet of the steam generating element, so that the steam in the heating element is cooled to liquid water and then sent to the steam generating element.

5. The geothermal energy utilization system according to claim 4.

6. The hot working fluid storage device is a hot working fluid tank.

6. The geothermal energy utilization system according to claim 1, wherein the geothermal energy utilization system is a system for utilizing geothermal energy.

7. The hot working fluid storage device is a hot working fluid sealed well; 6. The geothermal energy utilization system according to claim 1, wherein the geothermal energy utilization system is a system for utilizing geothermal energy.

8. a mechanical wheel, a steel strand, and a block are provided in the hot-working fluid-tight well; The block abuts against the inner wall of the hot working fluid-tight 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, and when the block rises, the steel strand is wound around the periphery of the mechanical wheel by the rotation of the mechanical wheel; The mechanical wheel is connected to a mechanical generator, and when the block descends, the block drives the mechanical wheel via the steel strand to rotate, thereby driving the mechanical generator to generate electricity.

8. The geothermal energy utilization system according to claim 7.

9. The working fluid inlet and the working fluid outlet of the hot working fluid seal well are located at the bottom of the hot working fluid seal well; When the first hot working fluid in the geothermal well is delivered to the hot working fluid sealing well, the block is pushed up, and when the first hot working fluid in the hot working fluid sealing well is delivered, the block is lowered by gravity.

9. The geothermal energy utilization system according to claim 8.

10. A check valve is installed at both the working fluid inlet and the working fluid outlet of the hot working fluid seal well.

10. The geothermal energy utilization system according to claim 9.

Images