CN113389675A

CN113389675A - Low-temperature supercritical water circulation power generation equipment

Info

Publication number: CN113389675A
Application number: CN202110749300.XA
Authority: CN
Inventors: 毛彬
Original assignee: Nanjing Pinhui Juneng Technology Co ltd
Current assignee: Nanjing Pinhui Juneng Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-09-14

Abstract

The invention discloses low-temperature supercritical water circulation power generation equipment.A liquid carbon dioxide is stored in a liquid storage tank, the liquid enters a refrigeration system for heat exchange to form supercritical carbon dioxide gas, and then the supercritical carbon dioxide gas is injected into a pressure relief tank through a high-pressure storage tank and is fused with water in the pressure relief tank; the heat of carbon dioxide absorption aquatic expands, cause pressure to reach saturation pressure in the pressure release jar, in the pressure release in-process, because hydraulic turbine nozzle valve is opened, carbon dioxide further absorbs the aquatic heat and realizes volume secondary expansion, promote water to do work, the impact rivers that provide steady pressure and flow for the water turbine, realize heat energy transformation mechanical energy, the hydraulic turbine drives motor output electric energy, the carbon dioxide and the water of doing work carry out gas-water separation in circulation system, the circulation uses, can realize the utilization of heat energy maximize, there is not heat emission in the conversion process, be favorable to environmental protection and water economy resource.

Description

Low-temperature supercritical water circulation power generation equipment

Technical Field

The invention relates to the technical field of thermoelectric conversion, in particular to low-temperature supercritical water circulation power generation equipment.

Background

With the development of economy, electric energy becomes a representative of mainstream energy in society, and the traditional thermoelectric conversion technology is a steam turbine power generation technology and an ORC (organic Rankine cycle) waste heat power generation technology based on a Rankine cycle theory.

As a steam turbine power generation technology, an ORC organic working medium power generation technology and a supercritical carbon dioxide Brayton cycle power generation technology, high temperature, high pressure and high emission are technical characteristics, the temperature and the pressure determine the thermoelectric conversion efficiency, and further a large amount of heat is emitted into the atmosphere and cannot be utilized, a large amount of water resources are consumed for evaporative cooling, and serious pollution is caused to the environment.

The self-pressure-relief heat pipe technology appears in 2015, and two important patents, namely a heat pipe self-pressure-relief phenomenon (patent number: ZL201510275297.7), an energy conversion method adopting a self-pressure-relief heat pipe principle and a self-pressure-relief heat pipe engine (patent number: ZL201810814417.X), provide theoretical basis for developing a low-temperature thermoelectric conversion technology.

Disclosure of Invention

The invention aims to provide low-temperature supercritical water circulation power generation equipment, and aims to solve the technical problems that the traditional thermoelectric conversion technology in the prior art generates huge external heat, a large amount of water resources are consumed for evaporative cooling, and the environment is seriously polluted.

In order to achieve the purpose, the low-temperature supercritical water circulation power generation equipment comprises a refrigeration system, a liquid storage tank, a high-pressure storage tank, a pressure relief tank, a power system and a circulation system;

the refrigerating system is used for heat exchange, the liquid storage pot with refrigerating system intercommunication for hold liquid working medium, high-pressure storage tank with refrigerating system intercommunication for hold gaseous working medium, the pressure release jar with high-pressure storage tank intercommunication for hold water and gaseous working medium, driving system with the pressure release jar intercommunication for the conversion electric energy, circulation system with the driving system with the liquid storage pot intercommunication for provide hydrologic cycle.

The power system comprises a water turbine and a generator, the water turbine is communicated with the pressure relief tank, and the generator is connected with the water turbine.

The circulating system comprises a separation tank and a compressor, the separation tank is communicated with the water turbine and the pressure relief tank respectively, and the compressor is communicated with the separation tank and the liquid storage tank respectively.

The liquid working medium is liquid carbon dioxide, and the gas working medium is supercritical carbon dioxide saturated gas.

The number of the pressure relief tanks is multiple, and the pressure relief tanks are respectively communicated with the high-pressure storage tank and the water turbine.

The hydraulic turbines are closed impulse turbines, the number of the hydraulic turbines is multiple, and the hydraulic turbines are respectively communicated with the generator and the pressure relief tank.

The low-temperature supercritical water circulation power generation equipment is provided with two working media, wherein the two working media are as follows: carbon dioxide and water, and forms a carbon dioxide and water double circulation system. The invention relates to low-temperature supercritical water circulation power generation equipment, which integrates a self-pressure-release heat pipe technology, a supercritical carbon dioxide technology, an ultrahigh water head impulse water turbine technology and a complex kinetic energy conversion mechanism, wherein the core technical principle is derived from the self-pressure-release heat pipe technology and the self-pressure-release heat pipe engine technical principle, carbon dioxide and water are used as working media, the saturation pressure of gas is 7Mpa when the temperature of the carbon dioxide is 31.5 ℃, and supercritical carbon dioxide saturated gas can be obtained at the temperature of more than 31.5 ℃; firstly, storing liquid carbon dioxide in the liquid storage tank, enabling the liquid carbon dioxide to enter the refrigeration system to exchange heat with external water, absorbing heat through phase change to form supercritical carbon dioxide gas, then injecting the supercritical carbon dioxide gas into the pressure relief tank through the high-pressure storage tank, wherein water is pre-filled in the pressure relief tank, and the carbon dioxide gas is fused with the water in the pressure relief tank to generate saturated gas-water mixture; the carbon dioxide absorbs the heat in the water to perform first expansion, so that the pressure in the pressure relief tank reaches the saturation pressure, in the pressure relief process, as the nozzle valve of the water turbine is opened, the condition of secondary expansion is provided for the carbon dioxide, the carbon dioxide further absorbs the heat in the water to realize volume secondary expansion, the water in the pressure relief tank is pushed to do work as a result of the two-time expansion, the rapid expansion of the volume of the carbon dioxide provides impact water flow with stable pressure and flow for the water turbine to drive the water turbine to do work, the heat energy with low temperature of above 31.5 ℃ is converted into mechanical energy, the water turbine drives the motor to output electric energy, the carbon dioxide and the water which do work are subjected to gas-water separation in the circulating system and can be recycled, and the whole process adopts computer control and management means to complete the accurate control of the process and parameters, and the thermoelectric conversion temperature is reduced to 40-85 ℃ under the vacuum condition, so that the maximum utilization of heat energy can be realized, no heat is discharged in the conversion process, and the method is favorable for protecting the environment and saving water resources.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the operation of a low temperature supercritical water cycle power plant of the present invention.

Figure 2 is a block diagram of a single set of pressure relief pocket machine in accordance with one embodiment of the present invention.

FIG. 3 is a block diagram of a multiple bank pressure relief minicomputer in accordance with one embodiment of the invention.

FIG. 4 is a block diagram of a single-shaft multi-cluster midset in accordance with a second embodiment of the present invention.

FIG. 5 is a block diagram of a two-axis multi-cluster midset in the second embodiment of the present invention.

Fig. 6 is a structural diagram of a single-stage turbine mainframe in the third embodiment of the present invention.

Fig. 7 is a structural diagram of a multi-stage hydraulic turbine mainframe according to a third embodiment of the present invention.

Fig. 8 is a diagram of an embodiment of an industrial circulating water scene in the fourth embodiment of the present invention.

Fig. 9 is a diagram of an embodiment in an industrial waste heat (waste heat) scenario in an embodiment five of the present invention.

Fig. 10 is a diagram of an embodiment in a garbage power generation scenario in the sixth embodiment of the present invention.

Fig. 11 is a diagram of an embodiment of a geothermal (dry hot rock) power generation scenario in the seventh embodiment of the invention.

Fig. 12 is an example diagram of a thermal power generation scenario in example eight of the present invention.

Fig. 13 is a diagram of an embodiment of an air energy power generation scenario in an embodiment nine of the present invention.

1-heat exchanger, 2-pressure relief tank, 3-liquid storage tank, 4-compressor, 5-separation tank, 6-high pressure storage tank, 7-circulating pump, 8-hydraulic turbine, 9-generator, 10-refrigeration system, 11-water inlet pipe, 12-water return pipe, 20-power system, 30-circulating system and 100-low temperature supercritical water circulation power generation equipment.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, "six-in-one machine" is a generic name given to low-temperature supercritical water-cycle power generation equipment, and is not a product trademark.

Referring to fig. 1, the present invention provides a low-temperature supercritical water cycle power generation apparatus 100, which includes a refrigeration system 10, a liquid storage tank 3, a high-pressure storage tank 6, a pressure relief tank 2, a power system 20 and a circulation system 30;

refrigerating system 10 is used for the heat exchange, liquid storage pot 3 with refrigerating system 10 intercommunication for hold liquid working medium, high-pressure storage tank 6 with refrigerating system 10 intercommunication for hold gaseous working medium, pressure release jar 2 with high-pressure storage tank 6 intercommunication for hold water and gaseous working medium, driving system 20 with pressure release jar 2 intercommunication for the conversion electric energy, circulation system 30 with driving system 20 with liquid storage pot 3 intercommunication for provide water circulation.

In the embodiment, liquid carbon dioxide is stored in the liquid storage tank 3, the liquid carbon dioxide enters the refrigeration system 10 through a liquid pipeline and exchanges heat with external circulating water in the refrigeration system 10, the inlet temperature of the circulating water is 40-80 ℃, the outlet temperature of the circulating water is set to 30 ℃, the circulating water can be industrial circulating water, and further the industrial circulating water is cooled, so that heat is fully utilized, and energy is saved; liquid carbon dioxide absorbs heat in a phase change manner in the refrigeration system 10 to become supercritical carbon dioxide saturated gas, the saturation pressure is greater than 7Mpa, the supercritical carbon dioxide saturated gas enters the high-pressure storage tank 6 through a gaseous supercritical pipeline, the supercritical carbon dioxide saturated gas is provided for the pressure relief tank 2 by the high-pressure storage tank 6, a certain amount of water is pre-selected and injected into the pressure relief tank 2, the water is desalted and deaerated water, the number of the pressure relief tanks 2 is multiple, each pressure relief tank 2 completes water injection, gas injection, pressure maintaining and pressure relief links according to the requirements of a control program, the first pressure relief tank 2 completes the pressure relief link, the second pressure relief tank 2 begins to relieve pressure, and the rest is done in sequence to realize in-group circulation, impact water flow with continuous and stable pressure and flow is provided for the power system 20, and then the power system 20 converts the impact water flow into electric energy, and output externally, the circulation system 30 separates the carbon dioxide and water which have done work, and realizes water circulation and gas circulation; the working instructions of the pressure relief tanks 2 control corresponding valves by a control system to ensure smooth gas and water paths, the whole process is under vacuum condition, the accurate control of the process and parameters is completed by computer control and management means, the thermoelectric conversion temperature is reduced to 40-85 ℃, the maximum utilization of heat energy can be realized, no heat is discharged in the conversion process, and the environment protection and water resource saving are facilitated.

Further, referring to fig. 1, the power system 20 includes a water turbine 8 and a generator 9, the water turbine 8 is communicated with the pressure relief tank 2, and the generator 9 is connected with the water turbine 8.

In this embodiment, the hydraulic turbine 8 model is PHP80, is the power machinery that converts the energy conversion of rivers into rotatory mechanical energy, with pressure release jar 2 intercommunication receives the impact rivers of the size stable pressure that pressure release jar 2 provided and flow, output stable rotational speed and moment of torsion under the impact of lasting rivers, and with generator 9 connects, drives generator 9 operates, the generator 9 model is ZD25, works as when generator 9 rotational speed reaches rated revolution, generator 9 is to outer output electric energy, and then realizes turning into mechanical energy with heat energy, turns into the electric energy again to whole process goes on under vacuum condition, can realize the utilization of heat energy maximize, does not have heat emission in the conversion process, is favorable to environmental protection and water economy resource.

Further, referring to fig. 1, the circulation system 30 includes a separation tank 5 and a compressor 4, the separation tank 5 is respectively communicated with the water turbine 8 and the pressure relief tank 2, and the compressor 4 is respectively communicated with the separation tank 5 and the liquid storage tank 3.

In this embodiment, after the high-pressure water jet impact the hydraulic turbine 8 done work, get into respectively through gas, water recovery pipeline in the gas-liquid separation jar 5, the effect of gas-liquid separation jar 5 is to retrieve the water and the carbon dioxide gas done work to carry out the steam gas-water separation in the carbon dioxide gas, after separating vapor, carbon dioxide gas gets into through gaseous state pipeline carry out compression phase transition in the compressor 4, form liquid carbon dioxide, get back to again the liquid storage tank, so far, the circulation of carbon dioxide is accomplished, recycles, is favorable to environmental protection and water economy resource.

Further, referring to fig. 1, the liquid working medium is liquid carbon dioxide, and the gas working medium is supercritical carbon dioxide saturated gas.

Further, referring to fig. 1, the low-temperature supercritical water cycle power generation device has two working mediums, which are: carbon dioxide and water, and forms a carbon dioxide and water double circulation system. In the embodiment, carbon dioxide is used for absorbing heat from the outside, the saturation pressure of gas is 7Mpa when the temperature of the carbon dioxide is 31.5 ℃, supercritical carbon dioxide saturated gas can be obtained at the temperature of more than 31.5 ℃, the problems of two contradictions of improving thermoelectric conversion efficiency and reducing heat emission can be solved at the lower temperature of 40-85 ℃, and the method is favorable for protecting the environment and saving water resources.

Further, referring to fig. 1, the number of the pressure relief tanks 2 is plural, and the plural pressure relief tanks 2 are respectively communicated with the high-pressure storage tank 6 and the hydraulic turbine 8.

In this embodiment, the quantity of pressure release jar 2 is a plurality of, forms the group, and is first pressure release jar 2 accomplishes the pressure release link, and is the second pressure release jar 2 begins the pressure release, analogizes in proper order, realizes 2 group's inner loop work of pressure release jar, 2 group's inner loop work of pressure release jar are given hydraulic turbine 8 provides the impact rivers of lasting steady pressure and flow, and then is favorable to the drive hydraulic turbine 8's rotation realizes that heat energy turns into mechanical energy, and the result of use is better.

Further, referring to fig. 1, the water turbine 8 is a closed impulse water turbine 8, and the number of the water turbines 8 is multiple, and the multiple water turbines 8 are respectively communicated with the generator 9 and the pressure relief tank 2.

In the embodiment, the water turbine 8 is a multi-waterway closed impulse water turbine 8, so that the whole operation process is carried out in a vacuum environment, and according to the design requirement of the system, a coaxial parallel output mode of a plurality of water turbines 8 can be adopted, thereby preventing the discharge of heat in the conversion process, increasing the output electric energy of the generator 9 and promoting the better use effect.

Further, referring to fig. 1, the refrigeration system 10 includes a water inlet pipe 11, a water return pipe 12 and a heat exchanger 1, wherein the water inlet pipe 11 is communicated with the heat exchanger 1 and is located at one side of the heat exchanger 1; the water return pipe 12 is communicated with the heat exchanger 1 and is positioned on the other side of the heat exchanger 1; the heat exchanger 1 is respectively communicated with the liquid storage tank 3 and the high-pressure storage tank 6 through pipelines.

In the present embodiment, the heat exchanger 1 is a GLC1123 type, and is a device for transferring partial heat of a hot fluid to a cold fluid, and the water inlet pipe 11 inputs circulating water of 40-80 ℃ into the heat exchanger 1, performs heat exchange cooling with liquid carbon dioxide in the heat exchanger 1, and outputs circulating water of 30 ℃ through the water return pipe 12, so as to cool industrial water and gasify liquid carbon dioxide.

Further, referring to fig. 1, the circulation system 30 further includes a circulation pump 7, and the circulation pump 7 is respectively communicated with the pressure relief tank 2 and the separation tank 5.

In this embodiment, 7 models of circulating pump are SPPE200, are the water pump that gets up the utilization with the hydrologic cycle, 5 well waters of knockout drum are through inside setting up circulating pump 7 gives respectively through 12 ways of wet return 2 moisturizing, each the operating instruction of pressure release jar 2 is by the corresponding valve of control system control to guarantee that gas circuit, water route are unblocked, work as when pressure release jar 2 needs the moisturizing, open exhaust valve on the

pressure release jar

2, 7 moisturizing of circulating pump, 2 interior carbon dioxide of pressure release jar get back to through gaseous state recovery pipeline

knockout drum

5, 2 moisturizing of pressure release jar are accomplished, close 2 air vent valve of pressure release jar, like this, the circulation process of water in the system is accomplished, and recycle is favorable to environmental protection and water economy resource.

The first embodiment provided by the invention is as follows: as shown in fig. 2 and fig. 3, the six-in-one machine is the low-temperature supercritical water circulation power generation plant 100, the six-in-one machine is a box structure, a heat exchanger, a carbon dioxide gas circulation system, a water turbine, a power generator and the like are integrated in the box, meanwhile, the six-in-one machine is provided with an automatic control system and an electric control system, a water inlet and a water outlet outside and is connected with an external circulating water pipeline, the heat required by power generation is provided for the six-in-one machine through circulating water, in addition, the six-in-one machine is also provided with a group of power output interfaces, the six-in-one small-sized machine outputs 400V alternating current externally, is a small-power generator set developed aiming at small-flow circulating water, and is divided into a single-group pressure relief tank and a plurality of groups of pressure relief tank structures, the structure is characterized in that the single machine has small volume, is suitable for specific small-flow circulating water environment, for example, small-flow circulating hot water generated by heat extraction by air energy can be directly converted into electric energy.

The second embodiment provided by the invention: as shown in fig. 4 and 5, the overall layout of the six-in-one machine is similar to that of fig. 2 or 3, and mainly aims at the waste heat utilization of the existing circulating water in the metallurgical industry, the existing circulating water pipeline is transformed, a medium-sized six-in-one machine is adopted to build a distributed power generation system according to the heat source distribution condition on the circulating water pipeline, such as waste heat recovery and utilization of industrial circulating water and smelting slag flushing water, the circulating water has the characteristics of low temperature but large circulating amount, two structures are designed on the premise of comprehensively considering the volume and weight of each integrated component, namely the structural layout that one water turbine and two water turbines are connected in parallel to drive one power generator is adopted, in the aspect of pressure relief assemblies, single-group and multi-group combined structures are also adopted, 400V alternating current is output outwards, and the single-machine output power is 500 and 1000 KW.

The third embodiment provided by the invention: as shown in fig. 6 and 7, the six-in-one machine large-scale equipment is a customized complete set of equipment for waste heat recovery and utilization of a newly-built metallurgical kiln, has the advantages of centralized recovery, large single-machine power generation and small equipment floor area, can solve the waste heat recovery problem of circulating cooling water and slag flushing water of the kiln respectively by using one or two equipment, adopts a single large-scale impact water turbine (multi-nozzle) or a large-scale multi-stage impact water turbine, is matched with a corresponding carbon dioxide circulating system and a water circulating system, and realizes the recycling of industrial waste heat of the complete set of equipment by using a special pressure relief mechanism.

The fourth embodiment provided by the invention: as shown in fig. 8, the six-in-one machine is connected in parallel in the access mode of the circulating pipe network, after high-temperature water enters the six-in-one machine, the water outlet is connected into a low-temperature pipeline, the six-in-one machine absorbs heat and converts the heat into electric energy, the application site calculates according to the heat, the six-in-one machine with corresponding quantity is assembled, a standby unit is added at the same time, namely N +1, the standby unit is equipment used during equipment maintenance, stable return water temperature of circulating water throughout the year is guaranteed, the application scene adopts a medium-sized six-in-one machine, and the advantages of the six-in-one machine are adopted: the temperature of the circulating water return can be ensured to be stabilized at 30 ℃, and a large amount of industrial water can be saved.

The fifth embodiment of the present invention: as shown in fig. 9, in this scenario, mainly for the slag flushing water of the smelting blast furnace, the waste steam, the blast furnace tail gas, and the like, in terms of equipment arrangement, the arrangement of the rear-end six-in-one machine is the same as that of the industrial circulating water scenario in the fourth embodiment, the front-end heat source part adopts heat exchangers (gas-water, water-water) of different types to convert various types of heat into high-temperature hot water, and water is used as a heat transfer medium between various types of industrial waste heat (waste heat) and the six-in-one machine, so that the treatment process for various types of heat sources is simplified, the application range of the six-in-one machine is expanded, the service life of the six-in-one machine is prolonged, and the advantages of the six-in-one machine are adopted: the method can recover industrial waste heat at 80 ℃, reduce emission and save water resources, which cannot be realized by the waste heat power generation adopting the ORC technology at present.

The sixth embodiment provided by the invention: the traditional waste incineration power generation adopts a steam turbine power generation technology, namely, steam is burnt by utilizing waste incineration heat, and a steam turbine is driven by saturated steam to generate power, as shown in figure 10, a six-in-one machine is applied to a waste incineration power generation scene, the waste incineration heat is utilized to heat circulating hot water at 80 ℃ through a heat exchanger, the hot water provides heat for the six-in-one machine, the return water temperature of the six-in-one machine is 30 ℃ for the heat exchanger, and water circulates in a closed mode between the six-in-one machine and the heat exchanger. The six-in-one machine is applied to the scene of waste incineration power generation, and compared with the traditional steam turbine power generation technology, the six-in-one machine can improve the thermoelectric conversion efficiency, reduce heat emission (cancel a cooling tower), simplify water treatment equipment required by thermoelectric conversion and save a large amount of water.

The seventh embodiment of the present invention: as shown in fig. 11, the application scenario of the six-in-one machine in the utilization of geothermal resources is shown, geothermal resources mainly refer to heat of underground hot water and underground dry hot rock, the temperature of the underground hot water exploited at present is 40-80 ℃, the temperature of the hot water derived from exploitation of the underground dry hot rock is usually 90-130 ℃, the underground hot water is only used for heating and central air conditioning ground source heat pump units at present, the heat energy exploited from the dry hot rock is generated by a steam turbine, the generation efficiency is very low, and the commercial development value is not achieved.

The eighth embodiment of the present invention: as shown in fig. 12, for an application scenario of a six-in-one machine in the thermal power generation field, a rankine cycle power generation technology (commonly called as boiling water) is adopted in the thermal power generation field at present, in order to improve the power generation efficiency, supercritical saturated steam is adopted to drive a steam turbine to generate power, the thermoelectric conversion efficiency is 42%, more than 50% of heat is discharged outside, a large amount of water is consumed when the heat is discharged, if the six-in-one machine is adopted in the thermal power generation field (called as hot water for short), as shown in fig. 12, the boiler only needs to heat the hot water, the hot water returns to the boiler after passing through the six-in-one machine, the six-in-one machine absorbs the heat in the hot water and converts the heat into electric energy to be output, no high-temperature discharge is generated in the whole process, the boiler is also an atmospheric hot water boiler, and the six-in-one machine in the scenario can adopt a medium-sized or large-sized six-in-one machine.

The embodiment provided by the invention is nine: as shown in fig. 13, the device is an application scenario in which the six-in-one machine generates power by using air energy under the condition of no effective heat source, the no effective heat source means that the six-in-one machine realizes thermoelectric conversion only by using heat of outside air under the condition that the six-in-one machine is not connected with various heat sources, the air energy power generation is an application embodiment of a small six-in-one machine, the thermoelectric conversion condition of the six-in-one machine is met by using a carbon dioxide heat pump unit to exchange heat with ambient air at the ambient temperature of more than 0 ℃, the device is a small all-in-one machine, is suitable for field construction sites, supplies power for road illumination, is an unattended charging station, and comprises the basic power supply requirement of coastal island reefs inconvenient for laying power transmission lines, and the power generation power of the single machine is 50-100 KW.

The heat energy can be utilized to the maximum extent, no heat is discharged in the conversion process, and the environment is protected and water resources are saved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A low-temperature supercritical water circulation power generation device is characterized by comprising a refrigeration system, a liquid storage tank, a high-pressure storage tank, a pressure relief tank, a power system and a circulation system;

2. The low-temperature supercritical water cycle power generation plant of claim 1,

3. The low-temperature supercritical water cycle power generation plant of claim 2,

4. The low-temperature supercritical water cycle power generation plant of claim 1,

5. The low-temperature supercritical water cycle power generation plant of claim 2,

the quantity of pressure release jar is a plurality of, and is a plurality of pressure release jar respectively with high-pressure storage tank with the hydraulic turbine intercommunication.

6. The low-temperature supercritical water cycle power generation plant of claim 2,

the hydraulic turbines are closed impulse turbines, the number of the hydraulic turbines is multiple, and the hydraulic turbines are communicated with the generator and the pressure relief tank respectively.

7. The low-temperature supercritical water cycle power generation plant of claim 1,

the low-temperature supercritical water circulation power generation equipment has two working media, wherein the two working media are as follows: carbon dioxide and water, and forms a carbon dioxide and water double circulation system.