75 results about "Steam power" patented technology

A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof, characterized in that the system comprises a gas turbine power generation system, a power transmission and transformation system, a molten salt heat storage system and a steam power generation system; the gas turbine power generation system is connected with the molten salt heat storage system through a flue gas pipeline; the molten salt heat storage system is connected with the power transmission and transformation system through a cable; the gas turbine power generation system is connected with the power transmission and transformation system through a cable; the molten salt heat storage system is connected with the steam power generation system through a main steam pipeline and a backwater pipeline; and the steam power generation system is connected with the power transmission and transformation system through a cable. The system can realize complete heat-electricity decoupling in a green energy storage system, realize the functions of self-supply of external power, storage of green electricity or heat supply, increase the accommodation capacity of a power grid to green electricity, and enhance the stability, flexibility and safety of a new power system.

The invention discloses a spin-drying device for seaweed for sports injury repair and a working method thereof.The spin-drying device for the seaweed for sports injury repair comprises a suspension type drying frame, a steam power boiler and a dehydration dryer, the steam power boiler generates high-pressure steam by collecting light and heat, the high-pressure steam enters the turbine transmission machine to drive the turbine transmission machine and drive the suspension type drying frame to rotate, and the suspension type drying frame can be unfolded during rotation. During use, after the suspension type drying frame is unfolded, seaweeds are put into the dehydration dryer, the drying frame can scatter the seaweeds and hang the seaweeds on the suspension type drying frame, at the moment, the suspension type drying frame drives the seaweeds to rotate at a high speed, so that water on the surfaces of the seaweeds is thrown away, airflow flow is formed, and meanwhile steam releases heat through the turbine transmission machine; the drying device is used for increasing the temperature in the dehydration dryer, so that seaweed is dried under the combined action of centrifugal force and high-speed airflow.

The utility model relates to the technical field of steam power generation turbines, in particular to a mixed flow type saturated steam power generation turbine which comprises a cylinder, the cylinder comprises a vertical inlet cavity and a horizontal outlet cavity which are communicated, and reinforcing ribs are arranged at the positions, corresponding to the joint of the two cavities, of the inner wall of the cylinder. A protruding structure at the bottom of the side, away from the horizontal outlet cavity, of the outer wall of the air cylinder is fixedly connected with a gearbox. The stationary blade assembly comprises a first-stage radial flow stationary blade fixedly arranged on the inner wall of the vertical inlet cavity and a second-stage axial flow stationary blade fixedly arranged on the reinforcing ribs; the rotor assembly comprises a rotating part connected with the high-speed shaft of the gear box, a first-stage radial flow vane impeller and a second-stage axial flow vane impeller, wherein the periphery of the rotating part is sleeved with the first-stage radial flow vane impeller and the second-stage axial flow vane impeller. The radial flow turbine and the axial flow turbine are combined to form the mixed-flow turbine, so that the working capacity of a single cylinder is improved, the power generation efficiency is improved, the cost is saved, and the unit size is reduced.

The application relates to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof, and belongs to the field of coal gasification combined cycle power generation coupled with biomass, in particular to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof. The application is used for solving the problems that the existing IGCC system has low CO2 capture rate, high energy consumption, low power generation efficiency, and a large amount of nitrogen generated in the oxygen taking process and difficult to effectively utilize. The application comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. The application is based on the overall coal gasification combined cycle power generation system of post-combustion CO2 capture and oxygen-enriched combustion technology, introduces a biomass ammonia synthesis process, generates H2 and CO through biomass fermentation and reforming, utilizes N2, and improves the system efficiency.

To provide a control device, a control method and a control program for a steam power generation plant which allows separation of some steam generators while maintaining a stable operation state.SOLUTION: At least one of steam supply systems in a composite cycle power generation plant comprises: a first steam generator; a first passage in which steam generated by the first steam generator flows; a second steam generator; a second passage in which steam generated by the second steam generator flows; a third passage connecting a merging part of the first passage and the second passage and a steam turbine; and a bypass passage branching from the first passage. A first cutoff valve and a second cutoff valve are arranged in the first passage and the second passage, and a bypass valve is arranged in the bypass passage. In such a plant, an opening operation from a full-closed state of the bypass valve is started at a separation start timing of starting a closing operation from a full-open state of the first cutoff valve with the second cutoff valve fully opened.SELECTED DRAWING: Figure 2

High-temperature and high-pressure gas is generated according to an internal combustion engine steam engine basic principle using method to drive piston motion, and the motion is converted into mechanical motion. The design principle of the hydrogen water vapor power internal combustion steam engine is based on the principle. According to the characteristic that the combustion temperature of hydrogen is high, the characteristic that water can be electrolyzed into hydrogen and oxygen, and the characteristic that the boiling point of the water under conventional atmospheric pressure is 100 DEG C, the hydrogen water vapor power internal combustion steam engine is integrated to obtain a result.

The invention relates to the technical field of energy power, and particularly discloses a power generation device for generating water vapor energy through an internal combustion engine set. The device comprises a compression starting system, a heat energy exchange system, a steam power system, a residual pressure and circulation system and an intelligent management system. A compression system is started to compress air to generate high-temperature and high-pressure gas; the heat energy exchange system uses the gas to heat water into high-pressure steam; the steam power system is driven by steam to generate electricity; the residual pressure and circulating system recycles dead steam residual pressure to drive air inlet pressurization, heat preservation is conducted through waste heat, and steam is condensed into water to be recycled; and the intelligent management system performs cooperative control. Water vapor autonomous power generation is achieved through physical compression and countercurrent flow heat exchange, energy gradient utilization and working medium closed-loop circulation are achieved, and the device has the advantages of being efficient, clean and capable of running continuously.

The application provides a double-power coupling type wind and steam complementary power generation device, relates to the technical field of wind power generation devices, and comprises a generator set, a wind power generation device is installed at the top of the generator set, the wind power generation device comprises a mounting rod, a gear box is fixed at the top of the mounting rod, connecting shafts are arranged at the two ends of the gear box, a first fan blade is arranged at the front end of the gear box, and a second fan blade is arranged at the rear end of the gear box, a sleeve frame is fixed at the positions of the first fan blade and the second fan blade corresponding to the connecting shafts, and the sleeve frame is sleeved on the connecting shafts, and an opening is arranged at the upper end of the sleeve frame, compared with the prior art, the two groups of fan blades can be used alternately, one group of damaged fan blades is disassembled and sent to the lower part for maintenance, and the other group of fan blades is used for replacement, so that the continuous operation of the wind power generation device is maintained, high-temperature compressed gas is sent into the steam power generation device through a compression assembly, the consumption of fuel is reduced, and power generation is jointly completed.

The application discloses a mine wastewater treatment equipment and a mine wastewater treatment method, which are provided with a steam power generation device, the steam power generation device generates power by using the waste heat or energy of water vapor, and then can supply power to an electric heating plate through an output circuit, the waste heat of the water vapor is fully utilized, the mains electricity of electric appliances such as the electric heating plate is saved, and production cost is reduced.

The invention discloses a micro-grid optimization scheduling method containing interface solar steam power generation and wave energy power generation. The method comprises the following steps: establishing an interface solar steam power generation device discretization model and a wave energy power generation fitting model; with electrical load, hydrogen demand and water demand as the core, electric energy storage and hydrogen storage are considered in a combined manner, and a micro-grid optimization model containing interface solar steam power generation and wave power generation is established; establishing constraint conditions of the micro-grid optimization model; performing simulation calculation in different scenes; and testing the system stability under extreme working conditions. According to the scheduling method, the dual dilemma of energy shortage and fresh water shortage in the island region can be solved, the dependence on traditional energy can be reduced, the energy transportation cost and the environmental risk are reduced, and the energy utilization efficiency and the environmental friendliness are improved.

A high-efficiency steam power cycle system for cascaded utilization of energy includes a steam cycle system and an organic working fluid Rankine cycle system. The steam cycle system includes a steam generator, a steam turbine, a condenser, and a separation device. The separation device is provided with a first outlet and a second outlet. An outlet of the steam generator, the steam turbine, the condenser, an inlet of the separation device, the first outlet, and an inlet of the steam generator are sequentially connected. The organic working fluid Rankine cycle system includes a heat exchanger; the heat exchanger is provided with a water-based absorbent inlet and a water-based absorbent outlet. The water-based absorbent outlet, an inlet of the condenser, the inlet of the separation device, the second outlet, and the water-based absorbent inlet are sequentially connected.

The utility model provides a kind of dry quenching power generation system of combined steam power generation and steam extraction using multiple parameters, belongs to dry quenching power generation system technical field, comprising: dry quenching boiler, waste heat boiler, make-up extraction condensing steam turbine, generator, adjustable medium-pressure steam extraction port, low-pressure make-up regulating valve and steam-water separator;Main steam produced by dry quenching boiler is passed into the main steam port of make-up extraction condensing steam turbine by main steam pipeline, and low-pressure saturated steam produced by waste heat boiler is passed into the make-up port of make-up extraction condensing steam turbine by make-up pipeline;The system drives generator to generate electricity by make-up extraction condensing steam turbine through main steam and low-pressure saturated steam, without using parameter reduction device to reduce parameter, so as to reduce energy waste and improve overall thermal efficiency. And by setting adjustable adjustable medium-pressure steam extraction port, the extraction amount of medium-temperature medium-pressure steam can be adjusted according to the needs of chemical production section in factory area.

To provide a condenser system capable of suppressing waste of makeup water and reducing the amount of makeup water, and an operation method thereof.SOLUTION: The condenser system 100A includes the condenser 112 that cools and condenses the vapor exhausted from the vapor turbine, the vacuum pumps 51 that extract the gas in the condenser 112, the storage tank 52 that separates and stores the moisture in the gas extracted by the vacuum pumps 51 and fed from the vacuum pumps 51, and the overflow water return line L8 that returns the overflow water from the storage tank 52 to the condenser 112 side.SELECTED DRAWING: Figure 2

A sun-tracking type steam power generation system comprises a solar energy collecting assembly, a power device and a power generator, and the solar energy collecting assembly comprises a rack, a Fresnel lens, a connecting piece, a connecting rod assembly, a first driver, a second driver and a steam pipe. The first driver is arranged on the rack and connected with the connecting piece to drive the connecting piece to swing around a first swing axis, and the second driver is arranged on the connecting piece and connected with the connecting rod assembly to drive the connecting rod assembly to swing around a second swing axis; the Fresnel lens focuses light to the steam pipe so as to heat water in the steam pipe, steam is generated and output from the output end of the steam pipe so as to drive the power device to act, and the power device drives the generator to act so as to generate electric energy.

The invention provides a thermal power carbon capture and energy storage integrated system based on a calcium cycle coupling chemical looping combustion technology, and belongs to the field of thermal chemical energy storage and CO2 capture. The system comprises an energy release / CO2 absorption unit and an energy storage / CO2 release unit, and integration of CO2 capture and energy storage can be realized at the same time. The energy release / CO2 absorption unit comprises a compressor, a mixer, a carbonation / oxidation reactor, an expansion machine and a steam preheater which are connected in sequence; the energy storage / CO2 release unit comprises a calcination / reduction reactor and a Rankine cycle part connected with the calcination / reduction reactor; in the system, CaO / MeOx-1 is converted into CaCO3 / MeOx through carbonation / oxidation reaction, CaCO3 / MeOx is converted into CaO / MeOx-1 through calcination / reduction reaction, and circulation is formed. The invention solves the problem of low power generation efficiency in the energy release process due to the temperature of superheated steam lower than 650 DEG C because the existing calcium-based CO2 capture / energy storage integrated system releases energy in the form of generating power through heat recovery and steam production.

The invention provides a heat energy storage and crude oil secondary exploitation system and method for an exhausted oil reservoir, and relates to the technical field of new energy utilization and petroleum engineering crossing. The high-temperature heat-conducting oil circulation loop is connected with the solar heat collector and is used for transmitting and utilizing heat energy; the steam power generation loop is connected with the high-temperature side of the high-temperature heat conduction oil circulation loop and used for converting heat energy into electric energy; the exhausted oil reservoir is used as an underground heat energy storage unit and a crude oil secondary exploitation unit; and the at least one hot water well is communicated with the depleted oil reservoir and is used for injecting high-temperature fluid into the depleted oil reservoir or extracting high-temperature oil-water mixed fluid from the depleted oil reservoir. The efficient multi-energy cooperative co-production system has the beneficial effects that the efficient multi-energy cooperative co-production system is constructed by deeply fusing solar photo-thermal conversion, underground heat energy storage, crude oil secondary enhanced exploitation and a cascade power generation technology, and the comprehensive utilization efficiency of energy and the resource development benefit are remarkably improved.

The utility model relates to the technical field of saturated steam power generation, in particular to a saturated steam power generation waste heat drain recovery system which specifically comprises a steam-water separator drain pipe, a main steam pipeline drain pipe, a shaft seal heater drain pipe, a western region hot water pool and a western region waste water pool. The steam-water separator drain pipe comprises a main pipeline, and a steam-water separator hot water pool removal pipe and a steam-water separator wastewater pool removal pipe which are connected with the main pipeline and are respectively shunted to a western region hot water pool and a western region wastewater pool, and the main steam pipeline drain pipe is communicated to the western region hot water pool; a drain pipe of the shaft seal heater and an overflow water pipe of the water jetting tank converge and then are divided into two paths to be converged into a western region hot water pool and a western region waste water pool respectively, the system further comprises a steam-water separator expansion box connected with the main pipeline, and the output end of the steam-water separator expansion box converges into the western region hot water pool. According to the utility model, the drain water related to the saturated generator set is recycled, and the drain water with gas is discharged into the hot water pool after being released in the flash tank, so that the drain water efficiency of the set is enhanced.

The present application belongs to the technical field of energy storage, and particularly relates to a Carnot cell utilizing LNG cold energy. The technical scheme is as follows: a Carnot cell utilizing LNG cold energy, comprising a compression working system, a steam power generation system, a low-temperature molten salt storage tank and a high-temperature molten salt storage tank, the input end of the compression working system utilizes electric energy, the compression working system comprises a heat exchanger, a heat storage pipeline is connected between the molten salt outlet of the low-temperature molten salt storage tank and the molten salt inlet of the high-temperature molten salt storage tank, the heat storage pipeline passes through the heat exchanger to absorb medium heat, a heat release pipeline is connected between the molten salt outlet of the high-temperature molten salt storage tank and the molten salt inlet of the low-temperature molten salt storage tank, and the heat release pipeline passes through a steam generator to heat the medium; and the Carnot cell further comprises an LNG pipeline, the cooling unit of the compression working system and the cooling unit of the steam power generation system are both heat-exchanged with the LNG pipeline. The present application provides a Carnot cell which fully utilizes LNG cold energy.

This invention discloses a waste heat recovery system for warm wastewater from a nuclear power unit, comprising a warm wastewater cooling and discharge module, a steam power generation module, and a cold seawater cooling module. The warm wastewater cooling and discharge module is used for cooling and discharging the warm wastewater; the steam power generation module is used for steam power generation; the cold seawater cooling module is used for condensing the steam from the steam power generation module; the warm wastewater cooling and discharge module and the steam power generation module are thermally coupled at the evaporator of the power generation loop; the steam power generation module and the cold seawater cooling module are thermally coupled at the condenser of the power generation loop. In this invention, a closed-loop power generation loop is added to the outlet of the secondary loop circulating water system of the nuclear power unit. A circulating water pump pumps high-temperature water from the outlet into the evaporator to heat the working fluid in the closed-loop power generation loop into steam, which then enters the turbine to generate electricity. The exhaust steam is cooled by low-temperature seawater in the condenser and then circulated through a working fluid circulation pump, thus realizing waste heat recovery and improving the economic efficiency of power generation.

The invention provides an apparatus which can heat water using a Fresnel lens or magnifying glass to focus and concentrate sunlight on water-filled radiator-like tubes which move water, by the water pressure from a water spigot / bib (without pumping), to: (1) move the heated, water through tubes to heat any space inside any building, and (2) provide steam to power a steam-powered electricity generator to provide electricity, and charge a battery, during daylight hours, and then use the charged battery to supply electricity during the night hours, and (3) move water, cooled by the subsurface ground, by water pressure from a water spigot / bib, without pumping, into proximity with any air space inside any building to cool the air space.

The invention relates to the technical field of sealing of steam power equipment, and discloses a blade guide flow dividing type steam sealing device of a steam turbine and a using method of the blade guide flow dividing type steam sealing device of the steam turbine. A plurality of sets of blade guide flow dividing type cavities, cavity inlet outer teeth and cavity outlet outer teeth are arranged on the side, facing a steam turbine rotor, of the steam seal body. The blade guide flow dividing type cavity is provided with a cavity inlet, a flow dividing side cavity, an outlet side cavity and a cavity outlet which are sequentially communicated, and the cavity inlet and the flow dividing side cavity are farther away from an inner cavity of the steam turbine relative to the outlet side cavity and the cavity outlet. A flow guide blade is arranged in the flow dividing side chamber; the cavity inlet outer teeth are farther from an inner cavity of the steam turbine relative to the cavity outlet outer teeth; and the chamber inlet outer teeth are farther from an inner cavity of the steam turbine relative to wall teeth of the steam turbine. Through the unique flow guide design of the flow guide blades and the multi-path flow distribution structure, the sealing performance is enhanced, and the steam leakage rate is reduced.

The invention discloses a marine steam turbine valve driving and switching device system, and relates to the field of ship steam power. Existing mainstream hydraulic servo-motor driving has the problems that limited space of a ship is occupied, and control precision of a modern steam turbine is difficult to meet. The device comprises a servo motor, a rotary transformer, a switching device, a worm and gear device, an oil inlet path, an oil discharge path, a manual switching three-way valve and a control box, the servo motor, the switching device and the worm and gear device are in transmission connection in sequence to form a movable link for automatically driving the valve; the manual switching three-way valve is communicated with an oil way of the switching device through an oil inlet way and an oil discharge way and is communicated with the switching device through the oil way to control the internal meshing state of the switching device, the manual switching three-way valve forms a closed oil way through the oil inlet way and the oil discharge way, and the control box, the rotary transformer and the pressure sensor are all electrically connected with the control system. And the valve driving and control mode switching is realized cooperatively. The invention is applied to the field of valve driving and switching of marine steam turbines.

The invention relates to a rocket boosting launching device and method based on steam power, and belongs to the technical field of boosting rocket launching, the rocket boosting launching device comprises two towers, a boosting seat, a plurality of mechanical clamping arms and a steam supply mechanism, the two towers are oppositely distributed on the two sides of a rocket, and sliding grooves are formed in the two opposite sides of the two towers; the boosting seat is arranged at the bottom end of the rocket, the two opposite ends of the boosting seat slide in the two sliding grooves correspondingly, and a plurality of steam spraying pipes A are fixed to the bottom end of the boosting seat at intervals. The multiple mechanical clamping arms are clamped outside the rocket, the two opposite ends of each mechanical clamping arm slide in the sliding grooves correspondingly, and steam spraying pipes B are fixed to the bottom ends of the multiple mechanical clamping arms correspondingly. The steam supply mechanism is used for providing high-temperature and high-pressure steam for the multiple steam spraying pipes A and the multiple steam spraying pipes B, a large initial speed can be provided for a rocket in the launching stage, the working load of a rocket engine in the take-off process is reduced, the existing rocket vertical take-off launching efficiency is improved, the engine reliability and reusability are improved, and the rocket engine is suitable for being used for a large-scale rocket. The rocket launching cost is reduced.

This invention provides a method and apparatus for hydrocarbon production. The apparatus includes a primary energy utilization system, a secondary energy utilization system, and a tertiary energy utilization system. The primary energy utilization system includes power supply equipment, a fluidized bed charging device, a fixed bed energy storage device, and a steam power generation device. The secondary energy utilization system includes a gasifier containing the material to be gasified and a first heat exchanger. The tertiary energy utilization system includes a reactor for hydrocarbon production, a distillation column, and a second heat exchanger. Through this invention, the primary, secondary, and tertiary energy utilization systems work together to achieve sustainable and green hydrocarbon production.

The invention relates to a solar photo-thermal power generation system combining liquid ammonia hydrogen production and a fuel cell, the solar photo-thermal power generation system comprises a photo-thermal-steam power generation unit and a liquid ammonia hydrogen production unit, and the photo-thermal-steam power generation unit comprises a heat collector, a steam pocket, a steam turbine and a power generator. The liquid ammonia hydrogen production unit comprises a hydrogen production reactor, a reaction tube of the hydrogen production reactor is used for hydrogen production reaction of liquid ammonia, and the reaction tube is arranged in the heat exchange cavity. A heat source inlet and a heat source outlet which are communicated with the heat exchange cavity are formed in the shell, the heat source inlet is communicated with a gas outlet of the steam pocket, the heat source outlet is communicated with the heat collector, the steam pocket provides steam for the heat exchange cavity to heat the reaction tube, heat can be provided for liquid ammonia hydrogen production, and solar energy is converted into chemical energy to be stored. Compared with the mode that a fused salt heat storage tank is used for storing heat, the risk of fused salt decomposition does not exist, and solar energy can be fully utilized.

The invention relates to the field of thermal power generation, in particular to a steam power cycle thermal power generation system. The system comprises a generator, a boiler system, a steam turbine, a condenser, a condensate pump, a low-pressure heater, a high-pressure heater, a deaerator and a feed pump, the boiler system produces high-pressure steam; the input end of the turbine communicates with the output end of the boiler system to receive high-pressure steam input by the boiler system for expansion work, and the output end of the turbine drives the generator to generate power. The condenser receives steam output by the steam turbine and condenses the steam into condensate water. The input end of the low-pressure heater is communicated with the output end of the steam turbine, and smoke exhausted by the steam turbine is used for heating conveyed condensate water. The condensate pump conveys condensate water to the low-pressure heater; the deaerator is used for deoxidizing the condensate water; the water feeding pump conveys deoxygenated water to the high-pressure heater for heating, and generated steam is conveyed to the boiler system. According to the system, the low-pressure heater heats condensate water through smoke exhausted by the steam turbine, and heat waste is reduced.

The utility model provides a high-temperature steel slag air cooling crushing waste heat recovery steam power generation device which comprises a slag tank, a slag overturning device, a slag crushing device, an air cooling device, a transfer device, a slag cooling device, a waste heat recovery device, a steam generation device, a heat storage device and a power generation device. The slag breaking device is arranged in the air cooling device, the transferring device is connected with the air cooling device and the slag cooling device in a transferring mode, the waste heat recovery device is connected with the air cooling device and the heat storage device, and the steam generation device is connected with the slag cooling device and the heat storage device. Cooling water of the slag cooling device absorbs heat to generate high-temperature pressurized water, and steam output from the waste heat recovery device and / or the steam generation device enters the heat storage device; according to the utility model, the short-process efficient heat energy recovery and conversion power generation treatment of the steel slag can be realized through the heat energy recovery and utilization of the heat-state materials and the stabilization treatment of the steel slag.

The invention discloses a metal expansion joint for a ship steam power system, and belongs to the field of design of connecting parts for the ship steam power system. The technical problem that on the premise that the large drift diameter and the short installation length are met, an existing corrugated pipe of a traditional structure is large in radial thrust in the working process due to the structure of the corrugated pipe is solved. The multi-layer metal corrugated pipe is arranged between a steam turbine and a condenser, is used for connecting a steam exhaust port of a low-pressure cylinder of the steam turbine and a steam inlet of a throat part of the condenser, and comprises a multi-layer metal corrugated pipe, and the multi-layer metal corrugated pipe is formed by sequentially arranging a plurality of wave-shaped units in the axial direction; a fixed connecting flange is arranged at one end of the multi-layer metal corrugated pipe, and a lap joint flange is arranged at the other end; the lap joint flange is in sealing contact with the turned-over edge of the end of the multi-layer metal corrugated pipe, and the lap joint flange can rotate relative to the axis of the multi-layer metal corrugated pipe. And the radial rigidity of the corrugated pipe is obviously reduced. The invention is used for the connection of the ship steam power system.

The application discloses a device for exploiting dry hot rock geothermal energy based on seawater working medium and a mounting method thereof. The device comprises a geothermal energy collecting assembly, a steam generator, a steam power generation assembly, a condenser and a heat exchange assembly. The steam generator is connected to the geothermal energy collecting assembly, the steam power generation assembly is connected to the steam generator, the condenser is connected to the steam power generation assembly, the heat exchange assembly is used for absorbing the heat energy of the geothermal layer, one end of the heat exchange assembly is connected to the condenser, the other end of the heat exchange assembly is connected to the steam generator, and a control system is electrically connected with the geothermal energy collecting assembly, the steam generator, the steam power generation assembly, the condenser and the heat exchange assembly. The working medium after power generation is recycled, direct discharge of the working medium after power generation is avoided, the power generation capacity of the steam power generation assembly is improved, and the economic benefit of the dry hot rock exploitation is improved.