34 results about "Geothermal heating" patented technology

A system includes a power unit, and a coiled tubing (CT) reel for spooling a CT string. The system includes a CT injector for injecting the CT string from a surface into a subsurface to construct a geothermal borehole. The CT injector includes a gooseneck for guiding the CT string into a body of the CT injector. The system includes a first arm for coupling the CT reel and the power unit. The system includes a second arm for coupling the CT injector and the power unit. The system is configured to modify the distance between the CT reel and the gooseneck by adjusting at least one of (i) the length of the first arm or (ii) the length of the second arm.

Systems and methods for generating hydrogen through serpentinization of iron-bearing rock, including mafic rock, ultramafic rock and banded iron formations is presented herein. The systems and methods use geothermally-heated and / or surface-heated fluid circulating through one or more fluidically-communicative wellbores to accelerate the production of hydrogen. A geothermal-injector wellbore is formed in a geothermal rock layer, and is communicative with a separate geothermal-collection wellbore, also formed in the geothermal layer. Fluid is pumped through the geothermal-injector wellbore, geothermally heated, collected by the geothermal-collection wellbore, and injected into a targeted rock layer that includes iron-bearing rock. The heated fluid increases the rate of hydrogen production though serpentinization of the rock, which is then collected through a separate producer wellbore. In some cases, a serpentinization-injector wellbore is used to circulate surface-heated and / or chemically-treated fluid to the targeted rock layer to accelerate hydrogen production.

The utility model relates to the technical field of geothermal heating, disclose a kind of geothermal heating heat pump unit, including heat pump unit main body, heat pump unit main body is fixedly connected with connecting pipe, connecting pipe is fixedly connected with box body, and the side of box body is fixedly connected with water outlet pipe;Water suction pipe, water suction pipe is arranged at the bottom end of heat pump unit main body, and water suction pipe is fixedly connected with heat pump unit main body cleaning assembly, and cleaning assembly is arranged in water suction pipe, and cleaning assembly is used to clean the speed of groundwater, and cleaning assembly includes filter plate, turbine blade and movable block, turbine blade rotation is arranged in water suction pipe, filter plate is arranged in water suction pipe, and filter plate is elastically connected with the inner wall of water suction pipe, movable block array is arranged between filter plate and turbine blade, movable block is transmission connection with turbine blade, heat pump unit main body is pumped up by water suction pipe to water, after water passes through water suction pipe, internal parts of cleaning assembly cooperate, and the impurities on filter plate are fully removed.

The invention relates to the field of geothermal heating temperature control, and provides a geothermal heating temperature control method and system based on environmental perception, and the method comprises the steps: obtaining indoor and outdoor environmental perception data through indoor perception equipment and outdoor monitoring channels of each heating room; preprocessing the indoor and outdoor environment sensing data; according to the preprocessed indoor and outdoor environment sensing data, the indoor temperature change trend of each heating room is predicted, and a temperature prediction change curve is obtained; when the fluctuation quantity of the temperature prediction change curve reaches the adjustment requirement, optimizing control parameters of a geothermal heating system adopted by each heating room according to the temperature prediction change curve by taking the preset comfortable room temperature and the minimum geothermal heating energy consumption as targets to obtain optimal geothermal control parameters; and dynamically adjusting the control parameters of the geothermal heating system according to the optimal geothermal control parameters. By means of the method, the comfortable room temperature can be preset, geothermal heating energy consumption can be minimized, the indoor comfort degree is improved, and meanwhile heating energy consumption is reduced.

The invention discloses a geothermal heat supply system integrating electricity price response and a heat storage scheduling strategy, belongs to the technical field of geothermal heat supply, and can solve the problems that an existing single geothermal heat supply system is low in efficiency and poor in stability. The system comprises a deep geothermal well; a photo-thermal module; the temperature commutator comprises an inlet end and a plurality of outlet ends; the deep geothermal well and the photo-thermal module are both communicated with the inlet end; the temperature reverser is used for detecting the temperature of the heat exchange fluid at the inlet end and controlling the outflow direction of the heat exchange fluid according to the temperature; the heat storage module comprises a heat storage heating unit and a heat storage water supply unit which are connected to different outlet ends of the temperature reverser, and the heat storage temperature of the heat storage heating unit is higher than that of the heat storage water supply unit; and the control module is used for controlling the deep geothermal well and the photo-thermal module to store heat to the heat storage module in the valley electricity period of the heat consumption valley period and controlling the heat storage module to release heat to the user side in the peak electricity period of the heat consumption peak period. The device is used for geothermal heat supply.

The invention discloses a geothermal-driven fuel cell and transcritical carbon dioxide cycle combined heat and power generation system. The system comprises a geothermal heating cycle subsystem, a high-temperature proton exchange membrane fuel cell subsystem and a transcritical carbon dioxide cycle subsystem which are connected with one another, the geothermal heating circulation subsystem preheats a reaction working medium of the high-temperature proton exchange membrane fuel cell subsystem and serves as a heat source of the building heating system, and waste heat discharged by the high-temperature proton exchange membrane fuel cell subsystem serves as a heat source of the transcritical carbon dioxide circulation subsystem. The transcritical carbon dioxide circulation subsystem forms a self-condensation circulation mechanism through an ejector, a gas-liquid separator and a first booster pump. Efficient gradient utilization of medium and low temperature geothermal energy is achieved, cooperative output of electric energy and heat energy is achieved, the Carnot cycle limitation of a traditional heat engine can be broken through, and the comprehensive energy efficiency of the system is effectively improved; self-condensation of transcritical carbon dioxide circulation can be achieved, and the problem that carbon dioxide is limited under the conventional condensation condition is solved.

Systems and methods for generating hydrogen through serpentinization of iron-bearing rock, including mafic rock, ultramafic rock and banded iron formations is presented herein. The systems and methods use geothermally-heated and / or surface-heated fluid circulating through one or more fluidically-communicative wellbores to accelerate the production of hydrogen. A geothermal -injector wellbore is formed in a geothermal rock layer, and is communicative with a separate geothermal-collection wellbore, also formed in the geothermal layer. Fluid is pumped through the geothermal -injector wellbore, geothermally heated, collected by the geothermal-collection wellbore, and injected into a targeted rock layer that includes iron-bearing rock. The heated fluid increases the rate of hydrogen production though serpentinization of the rock, which is then collected through a separate producer wellbore. In some cases, a serpentinization-injector wellbore is used to circulate surface-heated and / or chemically-treated fluid to the targeted rock layer to accelerate hydrogen production.

The utility model relates to the technical field of geothermal heating, in particular to a real-time monitoring device for geothermal heating, which comprises a monitor, the monitor is connected with an antenna through a connecting line, the monitor is arranged in a monitoring barrel, the top of the monitoring barrel is provided with an adjusting mechanism, the top of the adjusting mechanism is connected with a protective box, and the protective box is connected with the monitoring barrel. The antenna is located in the protection box, the monitoring barrel comprises a barrel body, a fixing column and monitoring holes, the fixing column is fixedly installed at the top in the barrel body, the monitor is fixedly installed at the bottom of the fixing column, and a plurality of monitoring holes are formed in the side face of the lower end of the barrel body and located in the outer side of the monitor; and the adjusting mechanism comprises a telescopic cylinder, a lead screw, a wire cylinder and a fixed cylinder, the wire cylinder is fixedly installed at the top of the barrel body, the real-time monitoring device is used for local heat supply, the situation that the monitor is extruded by soil blocks, stone blocks and the like in the burying process to be damaged is prevented, and stable operation of the monitor is guaranteed.

The utility model discloses a geothermal heating system for a greenhouse, which comprises a solar thermal collector vertically arranged on a back wall of the greenhouse; the water storage tank is arranged outside the greenhouse; the geothermal coil pipe is arranged below the ground of the greenhouse; a water supply pipe connected with one end of the geothermal coil pipe is arranged at the lower end of the water storage tank, and a water return pipe connected with the other end of the geothermal coil pipe is arranged at the upper end of the water storage tank; a water inlet pipe connected with the lower end of the solar heat collector is arranged at the lower end of the water storage tank, and a water outlet pipe connected with the upper end of the solar heat collector is arranged at the upper end of the water storage tank. The utility model has the following advantages and effects: through the arrangement of the solar heat collector, solar energy is utilized to heat a water source, the water source is stored in the water storage tank, hot water can be conveyed into the geothermal coil pipe, the heating of the ground is realized, the heating mode is energy-saving and environment-friendly, and the waste of resources can be reduced.

The invention relates to the technical field of overwintering storage of peony seeds in alpine regions, and discloses an overwintering storage method and storage device for peony seeds in alpine regions, the storage device comprises a passive heating mechanism, and the passive heating mechanism is fixedly mounted in a supporting cylinder. The overwintering storage method for the peony seeds in the alpine region comprises the steps that firstly, sand is stirred, a sand layer is laid, and the peony seeds are placed; secondly, the storage barrels and the storage plates are placed in a combined mode; thirdly, passive geothermal heating is conducted on the heat preservation barrel; 4, oxygen is introduced into the heat preservation cylinder at regular time, humidity is automatically controlled, and temperature is monitored in real time; and step 5, determining the low-temperature sand storage time of the peony seeds. The method has the beneficial effects that a temperature guarantee is provided for low-temperature sand storage stratification treatment in the alpine regions of the peony seeds, and through automatic control over ventilation, oxygen supply and humidity of the storage device, the appropriate humidity of the sand layer is kept, and the problem that the peony seeds are mildewed due to oxygen deficit in the overwintering storage process is solved.

The utility model discloses a medium-deep layer geothermal heat exchange system, belongs to the technical field of geothermal heat supply, and solves the problem that an underground heat reservoir is excessively exploited due to an existing heat collection mode. The input end of the first conveying structure communicates with the output end of the connecting structure, and the output end communicates with the geothermal water supply pipeline. The input end of the second conveying structure communicates with the geothermal water return pipeline, and the output end communicates with the first input end of the connecting structure. The heat exchange mechanism is buried under the earth surface and comprises an inner pipe, a heat pipe and a sleeve. The heat pipe is sleeved on the inner pipe, and the sleeve is sleeved on the heat pipe. The input end of the heat pipe communicates with the output end of the connecting structure, the output end of the heat pipe communicates with the input end of the inner pipe, and the output end of the inner pipe communicates with the second input end of the connecting structure. The heat collection efficiency is high, loss of heat in the underground transmission process can be reduced, energy consumption is reduced, and excessive exploitation of an underground heat reservoir is avoided.

During meeting for planning operations for scale removal and scale inhibitor squeeze treatment in wells, the possibility of the manifold being partially incrusted with scale raised considering the more critical mixture of water produced. The proposed solution is a method of treatment for removing scale from a manifold. Said method uses the geothermal heating of the exploration reservoir to heat a chemical removal solution (50). Heating is required to ensure the temperature is in a range that is also suitable for conducting the removal reaction, since the distance that the solution travels to the manifold (20) e the low temperature of the underwater environment make the reaction occur inefficiently, as in the case of pre-salt.

This application discloses a method, apparatus, electronic device, and medium for calculating the heating capacity of geothermal fields based on pressure field factors. The method may include: determining the expression of a well function based on a single-well extraction model; calculating the well-to-well spacing in the well-to-well model, which includes pumping wells and reinjection wells, based on the expression of the well function; calculating the heat extraction capacity of a single well; calculating the number of pumping wells based on the well-to-well spacing; and calculating the heating capacity based on the heat extraction capacity of a single well and the number of pumping wells. This invention starts from the changes in the pressure field of a geothermal field to determine a reasonable spacing between extraction and reinjection wells to ensure the relative stability of the pressure field and avoid a significant drop in the liquid level of pumping wells. Based on the well spacing, a geothermal field development well network is deployed, and the scale of geothermal field development and utilization and the geothermal heating capacity can be further calculated, providing a scientific basis for the sustainable development and utilization of geothermal fields and the preparation of feasibility studies for geothermal heating projects.

A system for geothermal heating comprising: a forced geothermal circuit in communication with a well bore; a well bore heat exchanger; a multilateral channel; a channel casing design; and a pump. A method for geothermal heating comprising: passing a fluid into a thermal circulation system; passing the fluid into a well bore heat exchanger; heating the fluid; passing the heated fluid through a multilateral channel comprising a multilateral channel design casing; and passing a reservoir fluid and the fluid into a heat exchanger. A method for a loop recovery process comprising: passing a circulation fluid into a system for geothermal heating; passing the circulation fluid into a well bore heat exchanger; heating the circulation fluid; passing the heated circulation fluid out of the system for geothermal heating; passing the heated circulation fluid through a heat exchanger of an organic Rankine cycle; and cooling the circulation fluid.

The invention discloses a method and related device for evaluating carbon emission reduction of a medium-deep geothermal heating system, and the method comprises the steps: building a geothermal well source side heating capability model based on the fluid mechanics and engineering thermodynamics theory, and dividing the load side heating demand scale according to the heating load index and the building area; according to the geothermal well source side heating capacity model and the load side heating demand scale, a multi-parameter combination feasible solution is screened, operation energy consumption and carbon emission calculation is carried out, and economical efficiency evaluation and input-output comprehensive evaluation are carried out; and optimizing different system configuration schemes according to economic evaluation and input-output comprehensive evaluation results. According to the method, the geothermal well parameters and the system operation strategy are collaboratively optimized, the principle of'demand setting by supply ', the multi-parameter combination screening mechanism and the comprehensive carbon emission reduction goodness index are organically combined, and collaborative optimization of geothermal well source side parameters and heating system configuration is achieved.

The utility model discloses a buried pipe structure for shallow geothermal heating, which relates to the technical field of heat exchange, and comprises an outer pipe body, an inner pipe body is arranged in the outer pipe body in a penetrating manner, a lower water flow channel is formed between the outer pipe body and the inner pipe body, and the lower water flow channel is communicated with the inner part of the inner pipe body through a liquid guide opening formed in the pipe wall of the inner pipe body; the heat collection anti-impact assembly is arranged on the periphery of the outer pipe body, the heat collection anti-impact assembly comprises a spiral piece, the spiral piece is spirally arranged on the periphery of the outer pipe body, and a spiral pressure-resistant plate is arranged on the periphery of the spiral piece; the structure can be implanted into the shallow layer of the earth surface, the outer pipe body and the shallow layer of the earth surface can be firmly fixed through the heat collection anti-impact assembly, the heat collection anti-impact assembly can further transfer geothermal energy of the shallow layer into the lower water flow channel, and when a heat exchange medium flows in the lower water flow channel, heat can be transferred out from the inner pipe body; therefore, the utilization efficiency and the heat exchange efficiency of terrestrial heat can be improved.

The invention provides a geothermal energy comprehensive utilization system and method, and relates to the technical field of geothermal energy utilization. A user heat exchange component; the first heat exchange side of the heat pump unit is connected with the coaxial sleeve geothermal well through a geothermal well water outlet pipeline and a geothermal well water inlet pipeline, and the second heat exchange side of the heat pump unit is connected with the user heat exchange component through a user water supply pipeline and a user water return pipeline; the buried pipe heat exchanger is connected with the geothermal well water inlet pipeline and the geothermal well water outlet pipeline through a buried pipe water inlet pipeline and a buried pipe water outlet pipeline respectively; the problem that in the prior art, in areas with large building density and unbalanced cooling and heating loads, a conventional shallow geothermal resource exploitation mode and a conventional medium-deep geothermal resource exploitation mode are used for geothermal heating and refrigeration, and the long-term efficient and stable operation effect cannot be achieved is solved.

The present application relates to a kind of geothermal heating simulation test platform for a variety of occasions, including geothermal test simulation platform, water storage system and water supply system;Water storage system includes stainless steel water storage iron box, water injection monitoring port, water tank inlet and outlet water flange;Water injection monitoring port is connected with geothermal test simulation platform, and the fluid in geothermal test simulation platform is injected by water injection monitoring port;Water supply system includes water pump fan, water pump high-power motor, water pump inlet and outlet water flange;Geothermal test simulation platform includes import and export pipeline flange, external steel structure box and flange internal baffle piece.The present application is suitable for a variety of occasions geothermal heating simulation test platform.By adjusting the number, size and material of pipeline, the heat transfer of single and multiple geothermal pipes of different depths and different strata is simulated;Through simulation test, the exploitation mode of geothermal energy can be optimized, the design and control strategy of heat pump system can be improved, the heat transfer and transmission efficiency of heating system can be optimized, etc., which helps to improve the performance and economy of geothermal heating.

This invention relates to a multi-energy complementary heating system based on solar and biomass energy, comprising a photovoltaic substrate and a geothermal heating pipe, and further comprising: a support frame, a circulating heating furnace with a water storage chamber in the middle, the photovoltaic substrate being connected to the circulating heating furnace, the circulating heating furnace using a multi-energy complementary method to heat the inside of the water storage chamber; and a connecting component installed on one side of the circulating heating furnace, which is used to circulate the circulating hot water inside the circulating heating furnace to the inside of the geothermal heating pipe. This application adopts a multi-energy complementary heating design, which allows clean energy sources such as solar and biomass energy to be used in a complementary manner, saving resources and reducing energy consumption. At the same time, the filtration component can accurately filter and clean the circulating water, preventing impurities from accumulating and depositing in the circulating water, which is conducive to the circulating water heating.

The invention discloses a data center full-year waste heat recovery and clean heating device and an operation method thereof.The data center full-year waste heat recovery and clean heating device comprises a waste heat heating module and an underground energy storage module, the waste heat heating module comprises a solar heat collector, a data machine room, a heat pump unit and the like, and the underground energy storage module is composed of a hot well, a cold well, an underground aquifer and the like; coupling linkage between the modules is achieved through pipelines and valves. In the non-heating season, the waste heat of the data machine room is mainly used, solar energy is used for assistance, and the waste heat is stored in an underground aquifer while free cooling is conducted on the machine room; in the heating season, through three modes of waste heat heating, geothermal heating and waste heat-geothermal combined heating, different temperature requirements are met by adapting to the peak regulation function of a heat pump. The problem of seasonal dislocation of waste heat and heat supply requirements of the data center is solved, cross-seasonal efficient utilization of waste heat is achieved, the energy utilization rate is remarkably increased, the operation cost of PUE and a heating system of the data room is reduced, carbon emission is reduced, and the system is suitable for various waste heat sources, stable in operation and wide in adaptability.

A geothermal heating and cooling system is provided. The geothermal heating and cooling system is used for a house or building structure where the foundation extends to a depth below the ground surface layer and into the ground stable layer. The geothermal heating and cooling system includes insulation provided about outer surfaces of the house or building structure. The geothermal heating and cooling system may also be used in conjunction with water tanks and swimming pools.

A geothermal heating and cooling system comprising a conduit comprising a biaxially oriented pipe made by a process comprising a) forming a polymer composition comprising an ethylene-based polymer and / or a propylene-based polymer into a tube and b) stretching the tube in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe.

Processes and systems are disclosed. The process may include obtaining a plurality of wells (502, 504, 506), including an injection well (504) and a closed-loop geothermal well (502), drilled into a geothermally heated formation (204) and inserting a closed-loop geothermal system, including a working fluid configured to extract heat from the geothermally heated formation (204) and supply it to a heat utilization facility (206), configured to extract heat from the working fluid, located on the surface of the earth, into the closed- loop geothermal well (502). The process further includes injecting a flow of geothermal fluid into the geothermally heated formation (204) through the injection well (504), such that the plurality of wells (502, 504, 506) is configured to direct the flow of geothermal fluid from the injection well (504) to the vicinity of the closed-loop geothermal well (502).

The invention provides a medium-deep layer hydrothermal type geothermal heating system and method, and particularly relates to the field of energy and power engineering. The system comprises a geothermal well, a direct heat exchange device, a water source heat pump device and a user heating device. The geothermal well achieves mining and recharging of geothermal water, the direct heat exchange equipment supplies heat to the user heating equipment through primary heat exchange, the water source heat pump equipment supplies heat to the user heating equipment through secondary heat exchange and improvement of the secondary heat grade, and the user heating equipment achieves accurate heat supply to a heating building. Due to the application of the system, full utilization of geothermal water heat, safe and pollution-free same-layer equivalent recharge, great improvement of heat supply efficiency and automatic control of a heating system are achieved, many defects of a traditional utilization process are overcome, environment-friendly and efficient utilization of medium-deep geothermal water can be achieved, and the system has remarkable technical progress and practical value.

The utility model relates to the technical field of pipeline filtering devices, in particular to a filtering device for a geothermal heating pipeline, which comprises a filtering mechanism, and the filtering mechanism comprises a main body shell, a filter element mounting cavity, a top cover, a connecting water inlet pipe, a connecting water outlet pipe, an external water inlet pipe, an internal water outlet pipe and a filter element. In the filtering work process, the cleaning water inlet valve and the cleaning water outlet valve are closed, the external water inlet valve and the internal water outlet valve are opened, and heating water passes through the main body shell and the filter element in the filter element mounting cavity through the connecting water inlet pipe and the external water inlet pipe to complete the filtering work; and when the filter element needs to be temporarily cleaned, the external water inlet valve and the internal water outlet valve are opened, clean water passes through the filter element mounting cavity through the cleaning water inlet pipe to clean the filter element, and the clean water is discharged through the cleaning water outlet pipe after cleaning is completed.

The invention belongs to the cross technical field of water treatment and geothermal energy utilization, and particularly discloses a water environment-geothermal energy cooperative treatment integrated device and a cooperative treatment method.The device comprises a coaxial double-pipe heat exchanger, a multi-stage water treatment module, an energy recovery module and a storage pool; the input end of an outer pipe of the coaxial double-pipe heat exchanger communicates with a geothermal fluid exploitation well, and the input end of an inner pipe of the coaxial double-pipe heat exchanger communicates with the cold side output end of the energy recovery module. The input end of the multi-stage water treatment module is communicated with the output end of an inner pipe of the coaxial sleeve heat exchanger, and the output end of the multi-stage water treatment module is communicated with the hot side input end of the energy recovery module; the cold side input end of the energy recovery module is communicated with the output end of the storage pool; and the input end of the storage pool is communicated with the output end of the outer pipe of the coaxial double-pipe heat exchanger. According to the invention, energy consumption dependence of traditional water treatment can be reduced, pollution discharge of geothermal exploitation wastewater can be solved, and the system and the method are suitable for medium-low temperature geothermal field wastewater treatment, geothermal heating system water supplement purification and other scenes.

The utility model discloses a middle-deep layer geothermal heating device, which relates to the technical field of geothermal heating and comprises a water return tank, a cold water tank and a heat exchange pipe, a hot water pipe is communicated between the water return tank and the heat exchange pipe, a water inlet pipe is arranged between the cold water tank and the heat exchange pipe, the water return tank comprises a tank cover and a tank body, and the tank cover covers the top of the tank body. Two symmetrically-arranged cleaning brush rollers are arranged on the inner wall of the box body in a contact mode, a driving cleaning mechanism is arranged at the bottom of the box cover and connected with the cleaning brush rollers, a blow-off pipe is arranged at the lower end of the opposite side wall of the water return box in a communicating mode, and the pipe wall of the blow-off pipe is fixedly sleeved with a blow-off pump. The cleaning brush roll can make contact with the inner wall of the box body through high-frequency rotation to fully clean impurities and scale, the cleaning effect is guaranteed, and meanwhile the cleaning mechanism can be separated from the water tank to complete replacement.

The application belongs to the technical field of water treatment and geothermal energy utilization, and specifically discloses a water environment-geothermal energy collaborative treatment integrated device and a collaborative treatment method. The device comprises a coaxial double-pipe heat exchanger, a multistage water treatment module, an energy recovery module and a storage pool. The input end of the outer pipe of the coaxial double-pipe heat exchanger is in communication with a geothermal fluid exploitation well, and the input end of the inner pipe is in communication with the cold side output end of the energy recovery module. The input end of the multistage water treatment module is in communication with the output end of the inner pipe of the coaxial double-pipe heat exchanger, and the output end of the multistage water treatment module is in communication with the hot side input end of the energy recovery module. The cold side input end of the energy recovery module is in communication with the output end of the storage pool. The input end of the storage pool is in communication with the output end of the outer pipe of the coaxial double-pipe heat exchanger. The application can not only reduce the energy consumption dependence of traditional water treatment, but also solve the pollution discharge of geothermal exploitation wastewater, and is suitable for scenarios such as medium and low temperature geothermal field wastewater treatment and geothermal heating system water replenishment purification.

Processes and systems are disclosed. The process may include obtaining a plurality of wells, including an injection well and a closed-loop geothermal well, drilled into a geothermally heated formation and inserting a closed-loop geothermal system, including a working fluid configured to extract heat from the geothermally heated formation and supply it to a heat utilization facility, configured to extract heat from the working fluid, located on the surface of the earth, into the closed-loop geothermal well. The process further includes injecting a flow of geothermal fluid into the geothermally heated formation through the injection well, such that the plurality of wells is configured to direct the flow of geothermal fluid from the injection well to the vicinity of the closed-loop geothermal well.

This utility model relates to an integrated device for a geothermal heating system based on the coupling of plate heat exchangers and a two-stage heat pump, applicable to the field of geothermal heating. The device includes a high-temperature heat pump, a low-temperature heat pump, and multiple sets of plate heat exchangers. Each plate heat exchanger includes two side plates and several plates disposed between the two side plates. Each side plate has a plug-in plate at its front end and a plug-in slot adapted to the plug-in plate at its rear end. A locking mechanism for locking the plug-in plate is provided within the plug-in slot. The multiple sets of plate heat exchangers are arranged front to back, and adjacent plate heat exchangers are connected by the plug-in plate of the rear plate heat exchanger engaging with the plug-in slot of the front plate heat exchanger, with the relative position of the plug-in plate and the plug-in slot locked by the locking mechanism. A first medium connecting pipe connects to the first medium inlet and outlet of each plate heat exchanger, and the first medium connecting pipe connects to the high-temperature heat pump. A second medium connecting pipe connects to the second medium inlet and outlet of each plate heat exchanger, and the second medium connecting pipe connects to the low-temperature heat pump.