One-machine three-device four-working-medium full-effect power generation system using earth rock heat and other steam energy

Abstract

The invention relates to a one-machine, three-device and four-working-medium full-effect power generation system technology for earth rock heat and other steam energy, in particular to a'gas-gas-steam-steam 'one-machine, three-device and four-cycle' micro-condensation cycle water feeder system, a double-water working medium heat exchanger system, a reverse Carnot cycle system and an earth rock heat output system which are matched with one another. A duplex reverse Carnot cycle system double-effect parallel medium two-direction progressive technological process, a single working medium through-flow structure and Rankine cycle uniform heat variable flow through-flow with'thermal unloading water and thermal loading water 'single working medium partition wall convection' micro-condensation heat regeneration and'main energy small flow steam and heated cycle huge running water 'double working medium partition wall convection heat exchange' are systematically created. The invention relates to a geothermal steam working medium independent heat exchange type output circulation, Rankine cycle power generation with two closed working media equal in heat and unequal in water through-flow, and a multi-system working principle that model selection is performed according to 6-20 times of through-flow and accumulation of small efficiency factors is equal to efficiency is combined, and a one-machine, three-device and four-cycle full-effect power generation system of general steam turbine distribution system full-efficiency power generation is included.

Description

[0001] Technological field

[0002] This invention relates to a fully efficient power generation system based on geothermal steam energy, specifically a system that utilizes a single generator, three equipment units, and four working fluids. In particular, it describes a heat exchanger system that increases the turbine's design flow rate by several times, and a dual-water working fluid system that also increases its design flow rate by several times. This system, combined with a turbine exhaust steam micro-condensation cycle fully regenerative feedwater system, achieves a flow rate 6 to 20 times greater than the standard flow rate of conventional saturated turbine systems, resulting in a total efficiency of "gas-gas-steam-steam" heat transfer and exchange system with four circulation units. Background Technology

[0003] Currently, in the field of publicly known thermal (nuclear) steam power generation technology, the turbine efficiency is as follows: for industrial boilers with parameters below 2.5 MPa, 6-10% is almost meaningless; for low-pressure parameters below 3.45 MPa, it is only about 15-20%; for medium-pressure parameters between 3.45 and 8.83 MPa, it is about 20-25%; for high-pressure parameters between 8.83 and 13.24 MPa, it is about 25-30%; and for ultra-high-pressure parameters between 13.24 and 16.67 MPa, it is about 30-35%. However, facing the current global trends in geothermal and environmental thermal energy, which are related to carbon transition, climate investment and financing, combined heat and power, waste heat power generation, and ultra-supercritical power generation, no results on fully efficient power generation have yet been released, either domestically or internationally. Summary of the Invention

[0004] The purpose of this invention is to continuously input the main energy steam from the steady-flow steam produced by power plant boilers, nuclear reactors, geothermal wells, etc., with various pressure parameters into a suitable steam turbine. The turbine is connected to a fully efficient power generation pipeline system with heat transfer and exchange through a "gas-gas-steam-steam" system, such as geothermal wells (producing 150°C steam). The heat exchange system with a design flow rate several times greater than that of the steam turbine working fluid (water), combined with the steam turbine exhaust steam micro-condensation fully regenerative circulating feedwater system, exceeds the standard flow rate of conventional saturated or back-pressure steam turbines by 6 to 20 times. Although the internal efficiency is still only 6 to 8% with such a large flow rate, the actual total power generation is achieved at about 90% when converted to a single conventional flow rate of 6 to 20 times.

[0005] The purpose of the present application is achieved: the whole power generation system is provided with "one machine three devices three working medium circulation", that is, one machine of three working medium independent circulation pipe networks is the center to constitute the heat transfer system of networked three devices, the full regenerative micro-condensation circulating water feeder system exceeds the conventional saturated steam turbine standard flow by 6-20 times, the double water working medium heat exchanger system, the two-stage system relay of double compressor double condenser double evaporator inverse Carnot cycle (refrigeration and heating at the same time) system with several times of increased design flow, the geothermal main energy output flow circulation system, and the saturated or back pressure steam turbine system with conventional 6-20 times "rated power" of increased design flow.

[0006] The micro-condensation circulating water (adiabatic tank) feeder system is a complete set of spiral pipe with large-diameter outer pipe and built-in copper pipe bundle, and four ports are provided at both ends of the pipe body. The four ports are: the left port at the top is a micro-condensation pump water inlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the outlet of the feed water pump (which is one way of heat unloading, the turbine exhaust temperature is reduced to about 60°C from the heat load temperature, and the high-pressure water is pushed by the tank outside feed water pump at a safe working temperature); the right port at the top is a micro-condensation pump pressure outlet water pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the inlet of the feed water pump; the left port at the bottom is a steam-water outlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the double water working medium heat exchanger system; the right port at the bottom is a circulating water return pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the exhaust port of the steam turbine. The micro-condensation circulating water (adiabatic tank) feeder system is a complete set of spiral pipe with large-diameter outer pipe and built-in copper pipe bundle, and four ports are provided at both ends of the pipe body. The four ports are: the left port at the top is a micro-condensation pump water inlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the outlet of the feed water pump (which is one way of heat unloading, the turbine exhaust temperature is reduced to about 60°C from the heat load temperature, and the high-pressure water is pushed by the tank outside feed water pump at a safe working temperature); the right port at the top is a micro-condensation pump pressure outlet water pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the inlet of the feed water pump; the left port at the bottom is a steam-water outlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the double water working medium heat exchanger system; the right port at the bottom is a circulating water return pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the exhaust port of the steam turbine. The micro-condensation circulating water (adiabatic tank) feeder system is a complete set of spiral pipe with large-diameter outer pipe and built-in copper pipe bundle, and four ports are provided at both ends of the pipe body. The four ports are: the left port at the top is a micro-condensation pump water inlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the outlet of the feed water pump (which is one way of heat unloading, the turbine exhaust temperature is reduced to about 60°C from the heat load temperature, and the high-pressure water is pushed by the tank outside feed water pump at a safe working temperature); the right port at the top is a micro-condensation pump pressure outlet water pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the inlet of the feed water pump; the left port at the bottom is a steam-water outlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the double water working medium heat exchanger system; the right port at the bottom is a circulating water return pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the exhaust port of the steam turbine. The micro-condensation circulating water (adiabatic tank) feeder system is a complete set of spiral pipe with large-diameter outer pipe and built-in copper pipe bundle, and four ports are provided at both ends of the pipe body. The four ports are: the left port at the top is a micro-condensation pump water inlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the outlet of the feed water pump (which is one way of heat unloading, the turbine exhaust temperature is reduced to about 60°C from the heat load temperature, and the high-pressure water is pushed by the tank outside feed water pump at a safe working temperature); the right port at the top is a micro-condensation pump pressure outlet water pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the inlet of the feed water pump; the left port at the bottom is a steam-water outlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the double water working medium heat exchanger system; the right port at the bottom is a circulating water return pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the exhaust port of the steam turbine. The micro-condensation circulating water (adiabatic tank) feeder system is a complete set of spiral pipe with large-diameter outer pipe and built-in copper pipe bundle, and four ports are provided at both ends of the pipe body. The four ports are: the left port at the top is a micro-condensation pump water inlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the outlet of the feed water pump (which is one way of heat unloading, the turbine exhaust temperature is reduced to about 60°C from the heat load temperature, and the high-pressure water is pushed by the tank outside feed water pump at a safe working temperature); the right port at the top is a micro-condensation pump pressure outlet water pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the inlet of the feed water pump; the left port at the bottom is a steam-water outlet pipe port closed by the copper pipe bundle common header pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the double water working medium heat exchanger system; the right port at the bottom is a circulating water return pipe port closed by the large-diameter pipe, which passes through the heat insulation layer and the safety tank body, and is connected to the exhaust port of the steam turbine.

[0007] The double water working medium heat exchanger is a copper tube bundle built-in spiral tube of outer large diameter tube of the "main energy small flow steam-heated cycle large flow water" two working medium partition wall counterflow heat exchange Rankine cycle uniform heating variable flow function link, and four ports are arranged at both ends of the tube body. The four ports are respectively: a left port at the top closed by the copper tube bundle common header pipe, an outflow pipe port passing through the heat insulation layer and the safety tank body, and connected to the ground rock heat injection water pump (a hot load of the ground rock heat steam at a temperature of about 145 DEG C or further reduced to about 60 DEG C by the tank outer inverse Carnot cycle system evaporator is injected into the ground rock heat layer by the injection pump), and a right port closed by the large diameter tube, an outflow pipe port passing through the heat insulation layer and the safety tank body, and connected to the already worked cycle return water pipe port (the ground rock heat steam at a temperature of about 150 DEG C or further heated to about 180 DEG C by the tank outer inverse Carnot cycle system condenser is exchanged for the inverse flow outside the copper tube bundle); a left port at the lower bottom closed by the copper tube bundle common header pipe, an outflow pipe port passing through the heat insulation layer and the safety tank body, and connected to the ground rock heat steam outlet, and a right port closed by the large diameter tube, an inflow pipe port passing through the heat insulation layer and the safety tank body, and connected to the initial flow outlet of the pump pressure steam turbine, and the inlet steam port of the steam turbine system.

[0008] The inverse Carnot cycle system with the structural features of two-stage system relay refrigeration and simultaneous heating by double compressor, double condenser and double evaporator. That is, the condenser of the first stage R134a refrigeration forward cycle compressor and the evaporator of the second stage CO2 heating inverse cycle compressor are set as a complete set of evaporative condensation superimposer counterflow heat transfer refrigeration and heating double effect, and the two directions are progressive, the former evaporator is a ground rock heat injection pipe refrigeration and further heat unloading, and the latter condenser is a ground rock heat steam pipe heating and further heat loading.

[0009] The ground rock heat main energy output flow cycle system, the system is composed of the ground rock heat main energy output system from the ground rock heat steam pipe under the ground rock heat steam, the ground rock heat injection pipe connected to the ground rock heat injection layer by the ground rock heat injection pump, and constitutes the geothermal steam working medium heat output cycle.

[0010] The back pressure type or saturated steam turbine system with the design flow rate of 6-20 times of the conventional "rated power" and the micro effect accumulated into the extreme effect (that is, the extreme effect accumulates the small power efficiency factor into the high efficiency), which is provided with two ports, that is, the inlet steam port and the exhaust steam port, to form the Rankine cycle power generation from the beginning to the end of the two devices.

[0011] Thus, it is "one machine three devices four cycles" when the conventional steam turbine is connected to the 150+℃ geothermal steam expansion work inlet, its internal efficiency is still about 6%, but due to the selection of the 20 times through-flow of the large size of the turbine, the design power of this type is of course 20 times the power of the conventional geothermal parameter matching machine. The constant pressure and temperature geothermal steam of a certain flow, when passing through the copper tube bundle of the double water heat exchange (heat insulation tank) system, the working fluid from the steam well only transmits heat to the turbine Rankine cycle through-flow working fluid which is 20 times larger than itself, and the condensed water due to heat exchange is closed to the geothermal water injection well and injected into the geothermal formation to circulate (in this way, the turbine blade and the heat exchange surface are fundamentally eliminated. The bottleneck of low energy flow density and large flow rate of geothermal energy is completely broken through); and the turbine exhaust through-flow working fluid section is in the micro-condensation cycle feedwater (heat insulation tank) system, which pumps the micro-condensed steam of the turbine exhaust 145℃ slightly lower than 0.01℃ to the water, and all (including the 99% "coolant loss" part of the traditional steam turbine generator set) enters and passes through the double water heat exchange (heat insulation tank) system (specifically, the turbine through-flow working fluid absorbs the heat of the 20 times fast steam flow in the copper tube bundle), so that the 145℃ through-flow of the turbine is increased by 5-20℃, and the turbine inlet is continuously pushed to the turbine inlet (the condensed water of the geothermal heat after reducing 5+℃ is injected into the geothermal injection well, and the two-stage system of double compressor, double condenser and double evaporator is connected to the structure feature of the reverse Carnot cycle system, which is connected to the condenser and evaporator of the geothermal steam "reheating superheating to improve power", and the water in the geothermal section is first reduced to 30-60℃ by the evaporator and then injected into the geothermal injection well), so as to form the three working fluid power generation cycle of the geothermal energy 90% efficiency of the whole invention "one machine three devices four cycles" system.

[0012] Due to the adoption of the above scheme, the "one machine three devices four cycles" provided in the application realizes full efficiency power generation of the three-device three-working medium heat exchange power generation system of the steam produced by the power plant boiler, nuclear reactor, and geothermal well, etc. into the steam turbine. Even the geothermal heat (producing only 150℃ steam) at 0.5Mpa working pressure can realize 80-90% full efficiency power generation, which will have a profound impact on the industrial boiler heat and power exchange and the double efficiency power generation of thermal power and nuclear power industry. Especially according to the expert conclusion that "2% of the national geothermal energy development can meet the electricity demand of 3000 years of China's total electricity consumption in 2023", based on the analysis of "6% efficiency power generation", the application is based on "80% efficiency power generation" to meet the electricity demand of 40000 years in China. The attraction of "0.03 yuan / kWh" is enough to guide China to replace fossil energy power generation in about five years, at that time, in addition to the energy saving benefit of several trillion yuan per year, it also realizes "hundred times cheaper air CO2 capture 'carbon dioxide new energy power generation' to achieve large reduction of CO2 in the earth's atmosphere", about sixty years later, the earth's atmosphere CO2 returns to normal, and China can rely on the application to ensure "0.03 yuan / kWh" for two to four million years without risk. BRIEF DESCRIPTION OF DRAWINGS

[0013] The application will be further described below in conjunction with the drawings of the specification.

[0014] Figure 1 is a structure diagram of the micro-condensation circulation feedwater (adiabatic tank) device system of the application;

[0015] Figure 2 is a structure diagram of the double water working medium heat exchange (adiabatic tank) device system of the application;

[0016] Figure 3 is a line connection diagram (schematic) of the turbine three-device four-cycle matching unit pipeline network of the application.

[0017] Figure 4 is a structure diagram of the two-stage system of the double compressor double condenser double evaporator of the application.

[0018] 1, pre-pressure inner plug aluminum silicate gap insulation heat preservation safety tank (referred to as heat preservation tank); 2, positive (reverse) closed working medium flow large diameter outer sleeve coil (referred to as large diameter coil); 3, reverse (positive) working medium flow copper tube bundle (referred to as copper tube bundle); 4, large diameter tube flow collection communication inlet (outlet) pipe (referred to as flow collection communication pipe); 5, micro-condensation pump water pressure inlet pipe; 6, to be pumped out water pipe (referred to as pump out water pipe); 7, water storage exhaust tank; 8, reverse (positive) combined copper tube bundle collection bundle closed flow communication pipe (referred to as copper tube collection bundle pipe); 9, to be heated water inlet pipe; 10, high pressure water supply pump working at normal temperature (referred to as water supply pump); 11, steam turbine initial steam inlet (referred to as steam inlet); 12, double water working medium heat conduction to increase the design flow by several times, combined with the steam turbine exhaust steam micro-condensation cycle full backheating water feeder system is only used with the conventional back pressure type or saturated steam turbine system (referred to as steam turbine) which increases the flow by 6-20 times to accumulate single power calculation efficiency factor; 13, steam turbine initial steam butt joint flow outlet (referred to as initial steam butt joint flow outlet); 14, steam turbine exhaust pipe connected with the already done work cycle return water pipe (referred to as already done work cycle return water pipe); 15, micro-cooler; 16, water supply outlet; 17, to be heated water inlet pipe; 18, tank flange; 19, to be heated water connection pipe; 20, base; 21, steam turbine steam inlet pipe; 22, ground rock heat injection water layer; 23, ground rock heat steam outlet pipe; 24, ground rock heat injection water pump; 25, ground rock heat steam production ground (referred to as steam production ground); 26, water injection ground; 27, main energy steam inlet (referred to as steam inlet); 28, large diameter coil outer gap plug insulation aluminum silicate heat preservation layer (referred to as heat preservation layer); 29, steam turbine steam inlet (referred to as steam inlet); 30, steam turbine exhaust steam outlet (referred to as exhaust steam outlet); 31, resistance regulator; 32, ground rock heat injection water pipe outer sleeve built-in evaporator integral coil (or inner sleeve tube bundle) heat unloading evaporator (referred to as evaporator); 33, ground rock heat steam production pipe outer sleeve built-in evaporator integral coil (or inner sleeve tube bundle) heat loading condenser (referred to as condenser); 34, two-stage system relay refrigeration compressor (referred to as refrigeration compressor) with the structural feature of double compressor double condenser double evaporator; 35, already done work flow pump outlet pipe (referred to as outlet pipe); 36, micro-condensation cycle water feeder (heat preservation tank) system; 37, double water working medium heat exchange (heat preservation tank) system; 38, two-stage system relay refrigeration and heating reverse Carnot cycle system (referred to as reverse Carnot cycle system) with the structural feature of double compressor double condenser double evaporator; 39, ground rock heat main energy output flow circulation system (referred to as ground rock heat output system); 40, ground rock heat injection water spiral outer sleeve pipe section heat unloading heat absorption ground rock heat injection water pipe (referred to as ground rock heat injection water pipe); 41, ground rock heat output inner sleeve spiral pipe (or inner sleeve tube bundle) section heated by outer sleeve heat loading condenser ground rock heat system steam production pipe (referred to as ground rock heat steam production pipe).42. A dual-stage evaporator / condenser (abbreviated as evaporator-condenser-dual-stage unit) with an integrated coil, housing a condenser for first-stage R134a refrigeration using a reverse Carnot cycle, and an evaporator / condenser for second-stage CO2 heating using a reverse Carnot cycle. This unit combines heat unloading and heat loading with bidirectional convection for both refrigeration and heating. 43. A second-stage compressor / heating compressor (abbreviated as heating compressor) with a two-stage system featuring dual compressors, dual condensers, and dual evaporators. Detailed Implementation

[0019] exist Figure 1 In the middle, the condensing circulating water supply system 36 has an insulated tank 1 with a built-in large-diameter coil 2. The top of the coil 2 is equipped with a manifold 4. The right side of the tank 1 is equipped with a self-closing water inlet 6 that leads from the bottom to the external pump outlet 6 of the tank 1. The outlet 6 is connected to the water storage and exhaust tank 7, the micro cooler 15, and the water supply pump 10. The pump 10 pushes the water pressure to the micro condensing pump water pressure inlet 5 on the top left of the insulated tank 1. The outlet 5 leads to the manifold 8 and then closes to the copper pipe bundle 3. The bundle 3 is closed and flows downward in reverse. The bundle 3 is closed at the bottom. The water supply outlet 16 on the left side of the copper pipe manifold 8 is connected to the water inlet 9 of the dual working medium heat exchanger (insulated tank) system 37. The working circulating return water inlet 14 on the bottom right of the tank 1 starts to lead the steam turbine exhaust port (30) and the outlet 16 to form a single working medium flow system.

[0020] exist Figure 2 In the middle, the dual-water working fluid heat exchanger system is 37 insulated tank (1) with a built-in large-diameter coil 2. The top right of the tank 1 is provided with a water inlet 9 to be heated. The water is closed through the manifold 4 and flows downward to the initial steam outlet 13 on the right side of the bottom of the tank 1. The main energy steam inlet 27 on the left side of the bottom is closed and the steam from the rock heat steam outlet 23 is drawn into the copper tube bundle 3 and flows upward to the outlet 35 of the working flow pump provided on the left side of the top of the tank 1. The outlet 35 is pressed by the rock layer water injection pump 24 to the rock heat working fluid and the cooled water to the rock heat water injection pipe 40 to form a dual working fluid circulation system.

[0021] exist Figure 3In the present application, there are "one machine, three devices, and four cycles", namely, the micro-condensation cycle feed water (adiabatic tank) device system 36, the double water heat exchanger system 37, the reverse Carnot cycle system 38, and the ground rock heat output system 39. The pipe diameter three-working medium flow route is as follows: the exhaust port 30 of the steam turbine 12 is connected to the micro-condensation cycle feed water device system 36 through the worked cycle return water pipe port 14, the port 14 enters the large-diameter coil pipe 2 in the system 36, and the heat is unloaded and flows forward to a slightly higher design working temperature, and then to the pump-induced water pipe port 6, and then to the water storage exhaust tank 7 and the micro-cooler 15 to make the working medium design working temperature, and then to the high-pressure feed water pump 10, the pump 10 is connected to the water pressure inlet pipe port 5, and then to the copper pipe bundle 3 in the reverse direction, and then to the heat-loaded working medium to the feed water outlet 16; the port 16 is connected to the water pipe port 17 of the double water heat exchanger system 37, and then to the large-diameter coil pipe 2 in the system 37 through the water pipe port 9, and then to the inner sleeve pipe bundle segment of the ground rock heat production pipe 41 of the double water heat exchanger system 37, the segment is first heated by the condenser 33 of the heating compressor 43 of the reverse Carnot cycle system 38, and then the working medium in the copper pipe bundle 3 in the system 37 is heated and loaded to become the design flow of the steam turbine initial steam, and then flows to the initial steam outlet 13 and is connected to the steam turbine inlet port 29; at the same time, the pipe 41 for the heat loading of the double water heat exchanger system 37 is in the working medium in the other independent closed cycle ground rock heat output system 39, the inner flow is connected through the outer sleeve pipe segment of the ground rock heat injection pipe 40 from the outlet pipe port 35 of the system 37, the inner sleeve pipe of the segment is another gas third working medium R134a cycle refrigeration compression (the evaporator 32 of the condenser 33, the evaporator 32 of the condenser 33 is coupled to the condenser 33 of the evaporative condensation double pipe 42, the inner sleeve pipe is the evaporator 32 of the heating compressor 43 of the fourth working medium CO2 cycle, which further transfers heat to the coupled cycle condenser 33, and the condenser 33 is used as the outer sleeve pipe of the inner sleeve pipe bundle segment of the pipe 41 to flow to the ground rock heat production pipe port 23 and enter the pipe 40 connected to the ground rock heat injection pump (24) to press into the ground rock heat injection layer 22, which is a one-machine, three-device, and four-working medium full-effect power generation system of a ground rock heat vapor energy. a

[0022] In Figure 4 ​In the middle, the rock stratum water injection pump 24 is heated and evaporated by the inner sleeve of the heat exchanger 32, and the geothermal energy of the rock stratum is circulated by the water injection pipe 40. The outer sleeve of the pipe 40 is unloaded again due to the heat, and the R134a refrigeration cycle of the evaporator 32 transfers heat to the condenser 33 of the outer sleeve of the double evaporator and condenser 42. The inner sleeve of the evaporator 32 is transferred to the condenser 33 by the second stage CO2 heating cycle compressor 43, and the condenser 33 is used as the outer sleeve to load the heat to the inner sleeve of the geothermal water injection pump 24. After the heat is unloaded again, the water is injected into the geothermal water injection layer 22 under the ground 26. At the same time, the system transfers the heat of the first stage evaporator 32 to the second stage CO2 compression heating cycle inner sleeve of the condenser 33 through the outer sleeve of the double evaporator and condenser 42, and the evaporator 32 is transferred to the condenser 33 through the reverse compression CO2 heating cycle, and finally the heat is transferred to the inner sleeve of the geothermal steam pipe 41 to form the main energy output system 39 of the geothermal steam working medium heat output cycle.

Claims

1. A fully efficient power generation system using geothermal steam energy, comprising one machine, three devices, and four working fluids, characterized by: This invention comprises "one machine, three devices, and four cycles," namely, a micro-condensing circulating water supply (insulation tank) system (36), a dual-water working fluid heat exchanger system (37), a reverse Carnot cycle system (38), and a geothermal power system (39). The flow path of the three working fluids is as follows: the exhaust port (30) of the steam turbine (12) is connected to the working return water port (14) of the micro-condensing circulating water supply system (36), and the water flows from the exhaust port (14) into the large-diameter coil (2) of the system (36) for heat unloading, flowing upwards at a temperature slightly higher than the design operating temperature, and then to the pump outlet water port (6). The working fluid then flows through the water storage and exhaust tank (7) and the micro-cooler (15) to make the flow path more efficient. After the design working temperature is reached, the high-pressure water pump (10) is connected. The pump (10) then pressurizes the water into the micro condenser pump inlet (5) and then flows downwards into the copper tube bundle (3). The entire bundle of pipes is heated and flows to the water outlet (16). The outlet (16) then goes to the water inlet (17) of the system (37) to be heated, and through the water inlet (9) into the large-diameter coil (2) in the system (37). It flows downwards again through the inner tube bundle section of the geothermal steam generation pipe (41) of the dual water working fluid heat exchanger system (37). The section is first superheated by the condenser (33) of the heating compressor (43) of the reverse Carnot cycle system (38) and then heats the system (37). The working fluid in the copper tube bundle (3) is heat-loaded to form the design flow of the turbine's initial steam, which flows to the initial steam outlet (13) and connects to the turbine's steam inlet (29). At the same time, the tube (41) for heat loading the dual water working fluid heat exchanger system (37) is in the working fluid flow of another independent closed-loop geothermal power system (39). The internal flow is connected from the outlet (35) of the system (37) to the outer sleeve section of the geothermal water injection pipe (40). The inner sleeve of the outer sleeve section is the evaporator (32) of the refrigeration compressor (34) of the third working fluid R134a cycle of another system. The evaporator (32) is coupled with the evaporator-condenser stack of the cycle. The condenser (33) of the double-layer (42) outer tube is the inner tube of the convective heat transfer device (42). The tube is the evaporator (32) of the heating compressor (43) of the fourth working fluid CO2 cycle. The heat transfer is further transferred to the condenser (33) of the decoupled cycle. The device (33) also serves as the outer tube of the inner tube bundle section of the tube (41) to transfer convective heat to the inner tube bundle section of the tube (41). The tube (41) leads the earth rock heat steam outlet (23) into the tube (40) and the ground rock layer water injection pump (24) presses it into the earth rock heat water injection layer (22). It is a kind of earth rock heat and other steam energy one machine three devices four working fluid full-efficiency power generation system.

2. The one-machine-three-device-four-working-fluid all-effect power generation system according to claim 1 is characterized in that: the insulated tank (1) of the condensing circulating water supply system (36) is a whole-enclosed large-diameter coil (2), the top of the coil (2) is provided with a collection pipe (4) passing through the tank (1) on the right and is provided with a self-closing bottom-to-top water outlet (6) leading to the external pump of the tank (1), the outlet (6) is connected to the water storage and exhaust tank (7), the micro cooler (15), and the water supply pump (10), the pump (10) pressurizes water to connect to the micro cooler set on the left side of the top of the insulated tank (1). The condensate pump water is pressurized into the inlet (5), and the inlet (5) is connected to the bundled pipe (8) and then closed to the copper pipe bundle (3). The bundle (3) is closed together and flows downward in reverse. The copper pipe bundle (3) is closed together at the bottom. The water outlet (16) on the left side of the copper pipe bundled pipe (8) is connected to the water inlet (9) of the dual working medium heat exchanger (insulation tank) system (37). The working circulating return water inlet (14) on the right side of the bottom of the tank (1) is connected to the turbine exhaust port (30) and the inlet (16) to form a single working medium flow system.

3. The one-machine-three-device-four-working-medium all-effect power generation system according to claim 1 is characterized in that: the dual-water working-medium heat exchanger system (37) is an insulated tank (1) with a built-in large-diameter coil (2), the top right of the tank (1) is provided with a water inlet (9) to be heated, which is closed through the collection pipe (4) and flows downward to the initial steam outlet (13) on the right side of the bottom of the tank (1); while the main energy steam inlet (27) on the left side of the bottom is closed to draw the steam from the geothermal steam outlet pipe (23) and the steam from the geothermal steam production pipe (41) enters the copper tube bundle (3) and flows upward to the outlet (35) of the working-medium flow pump provided on the left side of the top of the tank (1), and the outlet (35) is pumped by the geothermal water injection pump (24) to the geothermal working-medium cooled water to the geothermal water injection pipe (40) to form a dual-working-medium circulation system.

4. The one-machine-three-device-four-working-fluid all-effect power generation system according to claim 1 is characterized in that: the geothermal energy circulation water injection pipe (40) of the rock stratum water injection pump (24) and the inner shell heat absorption evaporator (32) is subjected to heat unloading again by the spiral outer shell of the pipe (40), so that the heat of the R134a refrigeration cycle of the evaporator (32) of its inner shell tube bundle structure is transferred by the first stage refrigeration compressor (34) to compress the R134a cycle in the forward direction, and the condenser (33) of the evaporator-condenser stack (42) is transferred to the condenser by the second stage CO2 heating cycle compressor (43). The device (33) is used as an outer tube to convect and heat load the water from the water pump (24) in the rock layer. After the water is unloaded again, it is introduced into the geothermal water injection layer (22) under the water injection surface (26). At the same time, the system transfers the heat transferred from the first stage device (32) through the outer tube device (33) of the evaporator-condenser stack (42) to the evaporator (32) of the inner tube of the second stage CO2 compression heating cycle. The heat transferred from the device (32) through the reverse compression CO2 heating cycle is then transferred to the condenser (33). Finally, the heat is transferred to the geothermal steam generation pipe (41) which is heat-loaded by its inner tube bundle, forming the main energy output system (39) of the geothermal steam working fluid heat output cycle.

5. The one-machine-three-device-four-working-refrigerant all-effect power generation system according to claim 1 is characterized by the following: a reverse Carnot cycle system (39) with a structure of two-stage system consisting of two compressors (34, 43), two condensers (33), two evaporators (32) for relay cooling and relay heating. The first stage R134a forward cycle refrigeration compressor (34) condenser (33) and the second stage CO2 reverse cycle heating compressor (43) evaporator (32) are combined into an evaporator-condenser stack 42. The evaporator 42 is used for both cooling and heating, and is progressive in two directions. The former evaporator is used for cooling the geothermal water injection pipe (40) and is further heat-unloaded. The latter condenser (33) is used for further heat loading of the geothermal steam generation pipe (41). The reverse Carnot cycle system is used for both cooling and heating, and is progressive in two directions.

6. The one-machine-three-device-four-working-medium all-effect power generation system according to claim 1 is characterized by: the outer large-diameter pipe (2) of the micro-condensing circulating water supply system (36) has a complete set of spiral pipes with copper pipe bundles (3) inside, and four ports are provided at both ends of the pipe body, with two ports in and out, connected to the water supply pump (10), micro-cooler (15), water storage and exhaust tank (7), and two ports (6, 5) outside the single working-medium flow structure, and the working principle of "'heat unloading water·heat loading water' single working-medium partition convection".

7. The one-machine-three-device-four-working-medium all-effect power generation system according to claim 1 is characterized in that: the outer large-diameter coil (2) of the dual water working-medium heat exchanger system (37) is equipped with a copper tube bundle (3), and the tube (2) has four ports at both ends, with two inlets and two outlets. The process and the working principle of the Rankine cycle uniform heat and variable flow of the "main energy small flow steam, heated circulation giant flow water" dual working-medium partition convection heat exchange.

8. The one-machine-three-device-four-working-fluid all-effect power generation system according to claim 1 is characterized in that: the geothermal power output system (39) comes from the geothermal steam output pipe (41) under the geothermal steam production surface (25), and the geothermal water injection pump (24) and the geothermal water injection pipe (40) are connected to the geothermal water injection layer (22) under the water injection surface (26) to form the process and working principle of the independent heat exchange power output cycle of geothermal steam working fluid.

9. The one-machine-three-device-four-working-fluid all-efficiency power generation system according to claim 1 is characterized by: a back-pressure or saturated steam turbine (12) with a design flow rate 6 to 20 times the "rated power" of the conventional system, which accumulates small efficiency to achieve maximum efficiency; a Rankine cycle power generation system with an inlet and an outlet that forms a flow path from the beginning through two devices (36, 37) to the end through two working fluids in a closed loop, with equal heat and unequal water flow, which accumulates small efficiency to achieve maximum efficiency by selecting a flow rate of 6 to 20 times the rated power.

10. The one-machine-three-device-four-working-fluid all-efficiency power generation system according to claim 1 is characterized by: increasing the design flow rate by several times to the design flow rate of the steam turbine, transferring heat to the heat exchanger system with a design flow rate several times higher than the design flow rate of the dual water working fluid, and combining the exhaust steam micro-condensation cycle full regenerative feedwater system (36) with the conventional saturated steam turbine (12) which has only increased the variable flow rate by 6 to 20 times, and the selected volume micro-efficiency to the single-work calculation efficiency of the steam turbine "'gas-gas-steam-steam' one-machine-three-device-four-cycle" all-efficiency power generation process and working principle.

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