713results about "Geothermal collectors" patented technology

The invention discloses a multi-branch middle-deep geothermal well efficient heat exchange system which comprises a main well, a plurality of branch wells and heat exchange pipes extending downwards in the main well in the vertical direction. The main well comprises a first well opening section and a second well opening section, the first well opening section extends downwards from the ground in the vertical direction to be communicated with an upper port of the second well opening section, a lower port of the second well opening section extends downwards in the vertical direction to a geothermal water layer, and an upper port of each branch well is communicated with the second well opening section. The lower port of each branch well obliquely and downwards extends to the geothermal water layer in the direction gradually away from the second opening well section; the vertical distances between the upper ports of the multiple branch wells and the ground are different, and a heat conduction metal stranded wire is arranged in each branch well in the extension direction of the branch well. The medium-deep geothermal well is designed to be of a multi-branch directional well structure, the heat conduction metal stranded wires are arranged in the branch wells in the extension directions of the branch wells, and therefore the geothermal energy taking capacity and the heat transfer efficiency of the stratum far away from the medium-deep geothermal well are greatly improved.

The invention discloses a geothermal development oil shale and CO2 geological storage integrated method, which relates to the field of complex oil and gas reservoir development, and comprises the following steps: designing U-shaped well process parameters, enabling CO2 fluid to flow to a high-temperature geothermal reservoir through a descending section of a U-shaped well, injecting the CO2 fluid into the oil shale reservoir along an ascending section of a shaft after sufficient heat exchange, preheating the oil shale, and storing the CO2 fluid into a high-temperature geothermal reservoir through the descending section of the U-shaped well. Terrestrial heat extraction and utilization are realized; after the temperature of the oil shale layer rises to the target temperature, the oil shale layer is further heated through manual heating, and in-situ conversion development of the oil shale is achieved; after completion, produced CO2 is injected into the oil shale layer again through the U-shaped well, and collaborative development of CO2 geological storage, geothermal extraction and oil shale in-situ conversion is achieved. Geothermal energy is efficiently extracted through CO2 and used for oil shale in-situ pyrolysis, the extra manual heating cost needed by oil shale in-situ conversion is remarkably reduced, and the economic feasibility of a pure storage project and oil shale in-situ conversion development is improved.

The invention provides a temperature control type anti-frost-heaving retaining wall structure and a design method thereof, and belongs to the technical field of infrastructure retaining engineering in cold regions, the temperature control type anti-frost-heaving retaining wall structure comprises a retaining wall body, a ground temperature energy conversion system and an intelligent control system, and the ground temperature energy conversion system is connected with the retaining wall body; the ground temperature energy conversion system is used for absorbing ground temperature energy, converting a gas-state heating medium from a low-pressure state into a high-pressure state, adjusting the flow of a liquid-state heating medium, reducing the pressure of the heating medium and dissipating the ground temperature energy into the retaining wall body, and the intelligent control system is electrically connected with the ground temperature energy conversion system; the controller is used for monitoring the temperature of filling soil on one side of the retaining wall body and controlling the ground temperature energy conversion system to operate according to the filling soil temperature so as to control the retaining wall body temperature and filling soil heat. The technical problems that the retaining wall frost heaving disease control difficulty is large, and the frost damage prevention and control effect is poor are solved, and the technical effects that the retaining wall and the filling temperature can be controlled, frost heaving disease control is easy, and the frost damage prevention and control effect is good are achieved.

The invention relates to a liquid air energy storage and terrestrial heat coordinated underground space air regulation and control system and method. Comprising a first-stage compressor, a second-stage compressor, a third-stage compressor, an expansion refrigerator, a first-stage compression heat exchanger, a second-stage compression heat exchanger, a third-stage compression heat exchanger, a cold box, a separator, a liquid air storage tank, a cryogenic pump, an evaporator, a cold storage circulating pump, a cold storage box, a compression heat exchange circulating pump, a compression heat storage box, a first heater, a second heater and a third heater. The system comprises a first air expander, a second air expander, a third air expander and a generator. The regeneration heater is used for guiding the compression heat generated by the compressor into the regeneration heater for regeneration and / or guiding the geothermal energy output by the geothermal energy output end into the regeneration heater for regeneration; the rotary wheel dehumidification device is used for performing cryogenic drying on the wet air; the fresh air processing unit is composed of a fresh air filter, a regeneration fan, a regeneration filter and an air supply fan.

The invention relates to the technical field of oil-gas field development and geothermal energy utilization. The invention provides an underground high-temperature composite fluid heating system, which comprises a crude oil separation device, a catalysis module, a high-temperature fluid generation module, an injection well pattern module, a target reservoir and a production well, and is characterized in that the crude oil separation device is communicated with the catalysis module through a first gas inlet pipeline and a second gas inlet pipeline; a first gas outlet pipeline and a second gas outlet pipeline are communicated with a high-temperature fluid generation module, the high-temperature fluid generation module is communicated with an injection well pattern module through a third gas outlet pipeline, the injection well pattern module is communicated with a target reservoir, and the target reservoir supplies energy to the outside through a fourth gas outlet pipeline. And the production well conveys the energy-supplied gas to the heat energy recovery device through the first recovery pipeline. In this way, efficient and uniform heating of the underground reservoir is achieved, energy consumption is reduced while the energy recovery efficiency is improved, and the problems of low heat conduction efficiency and high energy consumption in deep oil gas and hot dry rock development are solved.

The invention relates to the technical field of ground source heat pumps, and discloses a ground source heat pump buried pipe zoning layout and cold and heat balance control method which comprises the following steps that the current three-dimensional ground temperature field state of the area where a ground source heat pump buried pipe is located is obtained; predicting a future state sequence of the ground temperature field under different control strategies in a future prediction time domain; solving to obtain an optimal control sequence based on a multi-objective optimization function which aims at minimizing the comprehensive operation cost of the system in the prediction time domain; the multi-objective optimization function at least comprises an energy consumption item representing system short-term operation energy consumption and a balance item representing a ground temperature long-term balance state; and executing the first control action in the optimal control sequence. The prediction model constructed by the invention can combine a physical rule with a data residual continuously learned from actual operation, and ensures that prediction information on which a control decision depends always keeps high fidelity in long-term operation of the system.

The present invention provides a geothermal heat exchange station system, including a water collector, a geothermal heating unit, a heat exchange pipeline arranged in a geothermal well, a control system and a data fusion device, the water inlet ends of the heat exchange pipelines are respectively connected to the water collectors, and the water outlet ends of the heat exchange pipelines are in a tree-like shape; at least two independent heat exchange pipelines form a group, and one water outlet end of each independent heat exchange pipeline in the same group is first connected to each other, and then connected to the geothermal heating unit; the other water outlet end of each independent heat exchange pipeline is respectively connected to the water collector; the control system includes a collection part and a control part for collecting the outlet water temperature and the outlet water flow. The present application divides at least two independent heat exchange pipelines into a group, while reducing the number of sensors and flow meters used; reducing the error between the total outlet water temperature entering the geothermal heating unit and the temperature sensor monitoring; and providing a guarantee that the water temperature and water volume of the total hot water source entering the geothermal heating unit per unit time meet the design requirements.

The utility model discloses a multi-energy coupling rock-soil energy storage cyclic utilization system, which relates to the technical field of geothermal devices and comprises a heat pump host, an office water end, a domestic water end, a solar heat collection system and a rock-soil energy storage cyclic utilization system. A geothermal water supply pipe and a geothermal water return pipe are connected between the rock-soil energy storage recycling system and the heat pump main machine, and a heat supply water supply pipe and a heat supply water return pipe are connected between the other end of the heat pump main machine and the office water end. The multi-energy coupling rock-soil energy storage cyclic utilization system has the functions of heating in winter and refrigerating in summer, and aims at the problem of cold and heat imbalance, the solar heat collection system is assisted to supplement heat load in winter, and the solar heat collection system simultaneously meets the requirement of domestic hot water.

The utility model relates to the technical field of middle-deep layer heat exchange well devices, in particular to an open type middle-deep layer heat exchange well device which comprises a well wall pipe. The central pipe is installed in the well wall pipe, the water filtering pipe is installed on the well wall pipe, and a heat exchange runner is formed between the well wall pipe and the central pipe; the casing pipe is located in the heat exchange well and penetrates through the water-containing stratum to stretch into the rock heat type heat reservoir, and a first annular gap is formed between the outer wall, located in the rock heat type heat reservoir, of the casing pipe and the inner wall of the rock heat type heat reservoir. The water filtering pipe comprises an upper water filtering pipe and a lower water filtering pipe, the upper water filtering pipe is located in the middle of the casing pipe, and the lower water filtering pipe is located at the bottom of the casing pipe or close to the bottom; according to the device, the positions of the upper water filter pipe, the lower water filter pipe and the water stop device are reasonably arranged, so that a heat exchange medium can be in direct contact with a rock heat type heat reservoir, the mineral content in the heat exchange medium is increased, and rock heat type geothermal resources are suitable for hot spring bathing; meanwhile, the heat exchange efficiency of the heat exchange well is improved.

The invention relates to the technical field of civil construction engineering, in particular to effective utilization of geothermal resources and improvement of an energy exchange system. According to the energy pile, dynamic regulation and control of stratum heat balance are achieved through the active heat management technology, and the influence of heat accumulation on sustainable utilization of geothermal resources is effectively prevented; a composite heat extraction structure is adopted, and the heat absorption efficiency of geothermal resources is remarkably improved; a high-thermal-conductivity energy pile comprises a fixed base body, and a water circulation assembly is embedded in the fixed base body. The water circulation assembly comprises a water pumping assembly, a circulation pipeline and a water conveying assembly which are communicated with one another; a heat absorption device is arranged on the outer side of the fixed base body and comprises a plurality of heat absorption columns which are vertically distributed; the heat absorption column is provided with a heat conduction head embedded into the fixed base body.

The invention discloses a concentric tube geothermal well structure capable of improving heat exchange efficiency. The concentric tube geothermal well structure comprises a first well opening section and a second well opening section. The first well opening section comprises a first casing pipe, and first well cementation cement is arranged between the inner wall of the first well opening section and the first casing pipe; the second well opening section is provided with a second casing pipe, second well cementation cement and a central casing pipe; a distance is arranged between the second casing pipe and the well wall of the second well opening section, second well cementation cement is arranged between the center casing pipe and the second casing pipe, a water stopping device is arranged at the upper end of the second well cementation cement and is of a reducing structure with the diameter sequentially increased from top to bottom, and the inner wall of the top end of the water stopping device is connected with the center casing pipe. The bottom end of the water stop device is connected with the second sleeve; a packing structure is arranged at the bottom end of the second well cementation cement, and a permeable section is arranged at the lower end of the packing structure. The invention further provides a construction method of the geothermal well structure. The structure is reliable, the heat exchange efficiency is improved, and the industrial long-term operation requirement is met.

The present disclosure is directed to a geothermal desalination system, comprising; a primary liquid circuit circulating a liquid into a geothermal well and returning heated liquid from a well head of the geothermal well, the primary liquid circuit passing through a desalination plant; a first turbine driven by the heated liquid to produce a mechanical output; and an air compressor driven from the mechanical output to provide a first compressed air supply and a second compressed air supply, wherein the first compressed air supply drives a supply pump to supply salt water to the desalination plant, and the second compressed air supply drives a-start-up pump to initiate circulation in the primary liquid circuit.

The utility model relates to the technical field of medium-deep geothermal resource development and utilization, in particular to a medium-deep heat exchange well ground circulation control device which comprises a ground circulation pipeline which is respectively connected with a heat exchange well water inlet, a heat exchange well water outlet, a low-temperature water source connector and a hot water supply connector. The heat exchange well is used for at least enabling low-temperature water to form circulating runoff in the heat exchange well; the third gate is mounted on the circulating runoff forming pipeline and is used for controlling whether the low-temperature water forms circulating runoff in the heat exchange well or not; the temperature sensor is arranged on the pipeline at the water outlet of the heat exchange well; the control system is connected with the temperature sensor and the third gate, controls opening and closing of the gates according to the temperature of the water outlet of the heat exchange well, adjusts the circulating runoff time of low-temperature water in the heat exchange well and accordingly controls the water temperature of the water outlet of the heat exchange well. The control system is connected with the temperature sensor and the third gate, the gate is controlled to be opened and closed according to the temperature of the water outlet of the heat exchange well, and the water temperature of the water outlet of the heat exchange well is controlled.

The invention discloses a cold, heat and electricity combined supply system device for hot dry rock. The system comprises a middle-deep layer geothermal heat exchanger, a geothermal source pressure pump, a steam turbine evaporator, an ORC and Kalina steam turbine power generation device, a hot water type absorption unit, a steam turbine condenser, a steam turbine liquid supply pump, a warming heat exchanger, a backheating heat exchanger, a living water heat exchanger, a heat supply pump, a cold circulating pump, a plurality of electric control reversing valves, a user side and a power distribution control device. The system extracts hot dry rock heat energy through the geothermal heat exchanger to drive the power generation device to generate power, and cold or heat is output through the absorption type unit. The warming heat exchanger and the backheating heat exchanger optimize a working medium circulation path, the electric control reversing valve dynamically switches a refrigeration mode, a heating mode and a power generation mode, and the domestic water heat exchanger independently supplies domestic hot water. Efficient combined supply of cold, heat and electricity of geothermal energy is achieved, the problem that the working medium circulation efficiency is low during multi-mode switching is solved, the energy utilization rate is remarkably increased, the operation cost is reduced, and energy conservation and environment protection are achieved.

An inner pipe with a switchable flow channel is arranged in the middle-deep layer buried pipe heat exchanger, and a first opening and a second opening are formed in different depth positions, so that the middle-deep layer buried pipe heat exchanger at least has two operation modes of heat taking and cold taking. The limitation that an existing middle-deep layer buried pipe can only execute one-way heat supply operation is broken through, heat supply and cold supply two-way operation is achieved, the application range of the system is expanded, and the long-term operation stability of the system is improved.

The utility model relates to the technical field of energy conservation and environmental protection, in particular to a solar cross-quarter energy storage and soil source heat pump coupling heating system. The system comprises a solar photo-thermal photovoltaic integrated subsystem, a soil source heat pump coupling heat storage system and a heat user terminal system, the solar photo-thermal photovoltaic integrated subsystem comprises a photo-thermal photovoltaic integrated assembly, a heat exchanger, a storage battery and a circulating pump, and the solar photo-thermal photovoltaic integrated subsystem is used for supplying power to electric equipment of the system and collecting heat; the soil source heat pump coupling heat storage system comprises a soil source heat pump unit, a plate heat exchanger and soil serving as a heat storage medium. And a terminal user maintains proper indoor temperature and required hot water through the heat exchanger. Solar energy and geothermal energy are combined, abundant solar energy is converted into heat energy to be stored in soil in the non-heating season, then the heat energy is taken out through the ground source heat pump for heating in the heating season, renewable energy sources are fully utilized, and the current situation that cold and heat loads are uneven due to long-term operation of the soil is effectively prevented; finally, the purposes of high efficiency, energy conservation and emission reduction are achieved.

The invention discloses an air energy-soil composite heat pump cross-seasonal energy storage and winter combined heating system and an application method, and relates to the technical field of building energy conservation. Comprising the following steps: acquiring quantitative data of heat unbalance; when a heat unbalance phenomenon exists, determining a soil initial temperature and a maximum rising temperature before heat compensation, and calculating a heat compensation amount; determining a heat compensation operation time period and a system type selection of an air source heat pump; determining an initial rising temperature, a heat compensation initial investment and a preset age limit; the operation cost is determined, when the number of times of heat compensation is larger than a preset year limit, the sum of the initial investment of heat compensation and the operation cost within the preset year limit is recorded, and when it is detected that the total soil temperature increasing value is not lower than the maximum temperature increasing value, the air source heat pump system is determined again; and the strategy with the minimum operation cost and the minimum initial heat compensation investment is used as the optimal soil heat compensation strategy. The system obviously improves the utilization rate of renewable energy sources, and has the advantages of high energy efficiency, wide adaptability and low whole life cycle cost.

A modular medium-deep geothermal heat extraction device, comprising a sleeve and a surface circulation assembly connected to the sleeve. The sleeve is inserted into the surface; a bottom pipe, a plurality of heat extraction pipes, and a plurality of thermal insulation pipes are sequentially arranged in the sleeve from the deepest position outward; the bottom pipe, the heat extraction pipes, and the thermal insulation pipes are each composed of outer pipes and inner pipes which are coaxial; after the plurality of outer pipes are fitted, a cold water channel is formed between the inner pipes and the outer pipes; after the plurality of inner pipes are fitted, a hot water channel is formed inside the inner pipes; the cold water channel is communicated with the hot water channel inside the bottom pipe; and the cold water channel and the hot water channel are connected to the surface circulation assembly. The sleeve of the modular medium-deep geothermal heat extraction device uses a modular design, and a plurality of modules are separately transported to a construction site for assembly, so that production and transportation costs can be saved; and according to different stratum conditions, different numbers of modules can be selected for arrangement, so that the application is more flexible.

The present application discloses an oil-geothermal energy co-production system, comprising an oil-geothermal energy production and transportation mechanism and an injection and transportation mechanism. The oil-geothermal energy production and transportation mechanism comprises a negative pressure pipeline, an oil extraction portion is formed on the negative pressure pipeline, and the negative pressure pipeline is used to form negative pressure internally so as to extract oil from the oil extraction portion; and the injection and transportation mechanism comprises a plurality of flow-delivering pipelines, and the plurality of flow-delivering pipelines are evenly arranged around the peripheral side of the negative pressure pipeline and are spaced apart from the negative pressure pipeline, wherein each of the flow-delivering pipelines is provided with jetting portions, which are used for injecting supercritical carbon dioxide into petroleum. In the technical solution of the present application, by providing the jetting portions on each of the flow-delivering pipelines and evenly arranging the plurality of flow-delivering pipelines around the peripheral side of the negative pressure pipeline, supercritical carbon dioxide around the negative pressure pipeline can be distributed in a concentrated mode, thereby enhancing the fluidity of petroleum around the negative pressure pipeline, and thus accelerating the efficiency of petroleum extraction by the negative pressure pipeline.

The invention provides a geothermal heat storage high-efficiency heat exchange device, and mainly relates to the technical field of geothermal collection. A geothermal heat storage high-efficiency heat exchange device comprises an underground heat exchanger, a preheating assembly and a heat absorption assembly and is characterized in that a water inlet pipe and a water outlet pipe are fixedly installed at the upper end and the lower end of the underground heat exchanger respectively, the water inlet pipe of the underground heat exchanger is communicated with the preheating assembly, and the preheating assembly and the heat absorption assembly are communicated with each other to form a loop. And the preheating assembly and the heat absorption assembly are filled with a heat exchange agent. The device has the beneficial effects that geothermal energy is efficiently obtained through the underground heat exchanger, a loop is formed through the preheating assembly and the heat absorption assembly, and the heat collection and transmission efficiency is improved by means of circulating flow of a heat exchange agent.

The invention discloses an energy-saving ground source heat pump, which relates to the technical field of ground source heat pumps and comprises a base and a water diversion plate, and a heat pump unit is mounted above the base. According to the energy-saving ground source heat pump, rainwater enters the water storage tank through diversion of the water diversion plate, large-particle impurities are filtered through the filter screen, the rainwater is collected through the water storage tank, the stirring mechanism evenly stirs a water body while the motor drives the first stirring rod to rotate, the temperature of the water body is evenly distributed, and the heat exchange efficiency is improved; a first stirring rod drives a cleaning push plate to rotate, large-particle impurities on the surface of the filter screen are pushed to a collecting opening, then the large-particle impurities are discharged out of a water storage pool through a flow guide plate and a discharging opening, only one motor is used for driving, and when the large-particle impurities in rainwater are filtered and cleaned, deposition layers are reduced; rainwater can flow conveniently, the temperature of the stored rainwater can be evenly distributed, and the practicability and the working efficiency of the ground source heat pump are improved.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

The utility model provides a coaxial heat exchange device for medium-deep geothermal energy, and mainly relates to the technical field of geothermal energy development. A coaxial heat exchange device for medium-deep geothermal energy comprises a well pipe, a connecting pipe is fixedly arranged at the top of the well pipe, an outer pipe is fixedly arranged at the top of the connecting pipe, a reducer pipe is fixedly arranged in the outer pipe and close to the top, an inner pipe is fixedly arranged at the bottom of the reducer pipe, a circulating pipe is arranged in the inner pipe, and the circulating pipe penetrates through the outer pipe and the reducer pipe. Spiral blades are arranged on the outer ring of the circulating pipe in an array mode. The utility model has the beneficial effects that the coaxial heat exchange technology is adopted, geothermal water does not need to be extracted, tail water does not need to be recharged, the ground is prevented from settling, and the damage to the geological environment is small; and all the spiral fins are driven to rotate through flowing heat exchange, so that the disturbance effect is achieved, uniform heating is guaranteed, and the heat exchange effect is improved.

The invention discloses a reinforced soil bridge abutment system in a frozen soil area and a construction method of the reinforced soil bridge abutment system. The reinforced soil bridge abutment system comprises a reinforced soil bridge abutment body, a ground source heat pump regulation and control system, a clean energy power supply system and a monitoring system. The reinforced soil bridge abutment body comprises filling soil, rib materials and a prefabricated modular wall face, a buried circulating pipe group of the ground source heat pump regulation and control system deeply penetrates through a frozen soil layer to a stable soil layer, and a heat pump host transfers heat of a bridge abutment base in a high-temperature season to prevent frozen soil from melting by means of a double-circulation pipeline and depending on temperature sensor data and weather forecast data. And reversely supplementing heat in low-temperature seasons to inhibit frost heaving. The heat pump host and the monitoring system of the clean energy power supply system supply power in a time-sharing manner to guarantee core functions. The monitoring system comprises a temperature sensor, a strain gauge and an inclinometer. The problems of stability and frost heaving and thaw collapse of the abutment in the frozen soil area are effectively solved, and economic and social benefits are achieved.

The invention relates to the technical field of geothermal resources, in particular to a same-well heat exchange device and method for a middle-deep layer geothermal well. Comprising a geothermal well body, and a recharge well and an annular disc are installed on the outer wall and the inner wall of the geothermal well body respectively. According to the device, underground water can be filtered through the filter cylinder and the sieve holes when the submersible pump pumps the underground water, meanwhile, a movable block can move circumferentially through a motor, and the movable block moves circumferentially to eject impurities clamped in the sieve holes in different positions through the elasticity of a round block, a sliding block, an extrusion spring, an arc-shaped trapezoidal block, an extrusion block and a rubber column; meanwhile, the outer surfaces of the screen holes can be scraped and cleaned through a scraping plate when a movable block moves circumferentially, then impurities scraped by the scraping plate can be blocked and cleaned through a cleaning plate, a torsional spring and a fixed pipe, the subsequent reuse scraping effect is improved, and therefore the screen holes can be continuously cleaned; and the influence on subsequent heat exchange operation caused by reduction of water flow speed due to blockage or accumulation of impurities on sieve pores is avoided.

The invention belongs to the technical field of efficient mining of closed mine terrestrial heat, and particularly relates to an efficient mining device and method for closed mine terrestrial heat, the efficient mining device comprises an inner pipe, an outer pipe is arranged outside the inner pipe, the outer wall of the outer pipe is fixedly connected with a high-temperature-resistant lining layer, and the outer wall of the high-temperature-resistant lining layer is fixedly connected with an efficient heat preservation layer; the outer wall of the efficient heat preservation layer is fixedly connected with a protective outer layer. The inner pipe adopts a spiral shape and covers the fins, the outer pipe constructs a multi-layer protection system, and the inner pipe and the outer pipe cooperate to lay a foundation for efficient heat exchange and energy transmission. The inner pipe is made of aluminum bronze, heat of geothermal fluid can be rapidly absorbed by means of the high heat conductivity coefficient of 35-50 W / (m.K) of the inner pipe, the fluid flowing path is ingeniously prolonged by means of the spiral structure design, the fluid turbulence degree is enhanced in cooperation with fins, the heat exchange area is remarkably increased, and the heat exchange efficiency is improved by 30% or above compared with a traditional straight pipe structure.

The present application relates to the technical field of geotechnical slope engineering, and particularly discloses a slope anti-seismic anchor rod based on heat exchange self-circulation technology and a construction method thereof.The heat exchange self-circulation system arranged in the anchor rod ensures that the temperature of the frozen soil is maintained in a relatively stable range, so that the problem of soil freeze-thaw damage caused by temperature change can be solved.The anti-seismic system in the anchor rod improves the continuous supporting capacity of the anchor rod, the anchor rod can provide the required anchoring force for the supporting system, effectively improves the slope anti-sliding resistance, increases the safety factor of the slope stability, and ensures the safety and stability of the slope.Through the arrangement of the anti-seismic system, the anchor rod can continuously provide supporting bearing capacity, which is of great significance to the supporting engineering in earthquake areas.The arrangement of the data monitoring system can monitor some field data of the slope in real time, so as to facilitate the subsequent maintenance and improvement work.

The present invention discloses an all-season hot rod device and a method for maintaining the stability of permafrost, which belongs to the technical field of permafrost protection. The all-season hot rod device includes a hot rod unit and a refrigeration unit. The hot rod unit is divided into a condensation section, an insulation section and an evaporation section from top to bottom. The condensation section is placed above the ground surface, the insulation section is placed in the seasonal active layer of the frozen soil, and the evaporation section is placed in the permafrost layer. The gaseous heat carrier at the bottom of the evaporation section is ejected into the upper condensation section by an ejector in the insulation section; the refrigeration unit is placed on the top of the condensation section, which can absorb the heat of the condensation section and release it into the atmosphere; the operation of the hot rod unit and the refrigeration unit is controlled according to the permafrost temperature. The present invention combines the hot rod unit with the refrigeration unit to continuously deliver cold to the permafrost throughout the year, and maintain the thermal stability of the permafrost project; at the same time, it has the advantages of zero energy consumption, efficient heat transfer, convenient transportation and convenient installation, reliable operation, and can achieve the dual goals of permafrost protection and energy saving and efficiency improvement.

A system and method for producing hydrogen wherein the system comprises at least one electrolyzer adapted to be located within a subterranean formation, at least one electrical supply cable having a length selected to extend from the at least one electrolyzer to a ground surface power supply, at least one supply tubing string having a length selected to extend from the at least one electrolyzer to a water supply at the ground surface and at least one collection tubing string having a length selected to extend from the at least one electrolyzer to a collection location at the ground surface. The method comprises providing a well from a surface to an underground formation, locating at least one electrolyzer in the well, supplying the at least one electrolyzer with supply electricity, supplying the at least one electrolyzer with supply water, producing hydrogen gas at the electrolyzer and collecting and transporting the produced hydrogen gas to the surface.

The invention relates to a middle-deep layer geothermal energy buried pipe and a heat exchange system, and belongs to the field of middle-deep layer geothermal energy heat exchange. The medium-deep layer geothermal energy buried pipe and heat exchange system comprises a plurality of U-shaped pipe units, each U-shaped pipe unit comprises two plastic pipe bodies and an elbow used for connecting the two plastic pipe bodies, a hot melt adhesive layer is integrally connected to the inner wall of each plastic pipe body, and a spiral metal spiral piece is embedded in the inner wall of each hot melt adhesive layer. The existing medium-deep geothermal energy buried pipe and heat exchange system are optimized and improved, especially the internal structure of the buried pipe is optimized, so that the heat exchange efficiency of the buried pipe is further improved, and the buried pipe is particularly suitable for medium-deep geothermal energy; the larger the inner diameter of the buried pipe is, the better the heat exchange effect is, and therefore the utilization rate of medium-deep layer geothermal energy is further increased. The heat exchange efficiency of the heat exchange system is higher, the heat exchange system is particularly suitable for medium-deep layer geothermal heat exchange, and the deeper the geothermal well is, the larger the heat exchange effect difference is.