Inorganic working medium closed circulation skid-mounted power generation system

Abstract

The utility model relates to an inorganic working medium closed circulation skid-mounted power generation system. The power generation system comprises a boiler, an expansion generator set, a working medium condensation system, a working medium pressurization system, a shaft seal heating device, a first high-pressure heating device and a second high-pressure heating device. The liquid inorganic working medium is converted into high-temperature and high-pressure steam in the boiler for power generation; dead steam flowing out of the expansion generator set is condensed by the working medium condensing system to form liquid inorganic working medium condensate; inorganic working medium condensate sequentially flows through the shaft seal heating device, the first high-pressure heating device and the second high-pressure heating device after being pressurized by the working medium pressurization system. And after multi-stage heat exchange and temperature rise, the water flows into the boiler, and acting circulation is started. The system adopts an inorganic working medium as a circulating medium, is safe, non-toxic and non-corrosive and is suitable for high-temperature and high-pressure scenes, closed circulation is beneficial to maximum utilization of material efficiency, and the skid-mounted structure is simple, convenient to install and manage and wide in application scene.

Description

Technical Field

[0001] The utility model relates to the field of power generation, in particular to an inorganic working medium closed-cycle skid-mounted power generation system. Background Art

[0002] The skid-mounted power generation system has highly integrated functional modules, compact equipment layout, and easy installation, which can significantly reduce on-site assembly time and management difficulty, lowering costs. It is suitable for special working conditions such as offshore engineering platforms and stations, and effectively overcomes the shortcomings of bulk power generation systems such as large footprint, multiple pipelines, difficult management, and high cost.

[0003] However, existing skid-mounted power generation systems mostly use organic working fluids, and at least two circulation systems (thermal oil circulation system and organic working fluid circulation system) are required to achieve a working cycle. The system structure is complex and the cost is high. In addition, organic working fluids are easily cracked under high temperature and high pressure, and are flammable and explosive, posing huge safety hazards. They are only suitable for scenarios with low-grade waste heat and have a limited scope of application. Utility Model Content

[0004] The utility model aims to address the problems existing in the prior art and provide an inorganic working fluid closed-cycle skid-mounted power generation system. The power generation system uses an inorganic working fluid as a circulating medium, which is safe and non-toxic and suitable for high-temperature and high-pressure scenarios. The closed cycle is conducive to maximizing the utilization of material efficiency. The skid-mounted structure is simple, easy to install and manage, and has a wide range of application scenarios.

[0005] In order to achieve the purpose of the present invention, the technical solutions provided by the present invention are as follows:

[0006] An inorganic working fluid closed cycle skid-mounted power generation system, comprising:

[0007] Boiler, expansion generator set, working fluid condensation system, working fluid pressurization system, shaft seal heating device, first high-pressure heating device, second high-pressure heating device;

[0008] The boiler, the expansion generator set, the working medium condensation system, the working medium pressurization system, the shaft seal heating device, the first high-pressure heating device, and the second high-pressure heating device are connected in sequence through pipelines;

[0009] After the liquid inorganic working medium is heated, gasified and superheated in the boiler, it is transformed into high-temperature and high-pressure steam, which is input into the expansion generator set through the pipeline, where it performs work and generates electricity;

[0010] The inorganic working fluid after doing work is converted into low-temperature exhaust steam. After flowing out of the expansion generator set, it is condensed by heat exchange in the working fluid condensation system to form liquid inorganic working fluid condensate.

[0011] The inorganic working fluid condensate flows out of the working fluid condensation system, is pressurized by the working fluid pressurization system, and then flows through the shaft seal heating device, the first high-pressure heating device, and the second high-pressure heating device in sequence;

[0012] The inlet of the shaft seal heating device is connected to the shaft seal portion of the expansion generator set via a pipeline. Part of the high-temperature exhaust steam from the shaft seal portion of the expansion generator set flows into the shaft seal heating device and exchanges heat with the inorganic working fluid condensate flowing through the shaft seal heating device to increase its temperature. The high-temperature exhaust steam cools down and condenses, then flows out of the outlet of the shaft seal heating device and is then fed into the inlet of the working fluid condensation system.

[0013] The inlet of the first high-pressure heating device is connected to the middle part of the expansion generator set via a pipeline. A portion of the high-temperature exhaust steam in the middle part of the expansion generator set flows into the first high-pressure heating device, exchanging heat with the inorganic working fluid condensate flowing through the first high-pressure heating device to increase its temperature. After cooling and condensing, the high-temperature exhaust steam flows out of the outlet of the first high-pressure heating device, merges with the outlet of the shaft seal heating device, and is then input into the inlet of the working fluid condensation system.

[0014] The inlet of the second high-pressure heating device is connected to the high-pressure end or front end of the expansion generator set via a pipeline. A portion of the high-temperature exhaust steam from the high-pressure end or front end of the expansion generator set flows into the second high-pressure heating device, exchanging heat with the inorganic working fluid condensate flowing through the second high-pressure heating device to raise its temperature. The high-temperature exhaust steam cools down and condenses, then enters the first high-pressure heating device, mixes with the working fluid of the first high-pressure heating device, flows out of the outlet of the first heating device, merges with the outlet of the shaft seal heating device, and is then input into the inlet of the working fluid condensation system.

[0015] The inorganic working fluid condensate is heated through multi-stage heat exchange and then flows into the boiler, starting a new power cycle.

[0016] The inorganic working fluid is deionized water and RH400.

[0017] The inorganic working fluid has good antioxidant properties and does not form iron oxide plasma. Compared with organic working fluids, the inorganic working fluid is non-toxic, non-corrosive, flame-retardant, environmentally friendly, and pollution-free. It can be used in high-temperature and high-pressure environments and has broad application prospects.

[0018] The high-temperature exhaust steam or low-temperature exhaust steam is formed after high-temperature and high-pressure inorganic working fluid steam performs work in an expansion generator set.

[0019] The temperature of the high-temperature exhaust steam at different parts of the expansion generator set is different. The temperature of the high-temperature exhaust steam at the shaft seal part is approximately between 180 and 350°C; the temperature of the high-temperature exhaust steam at the middle part of the expansion generator set is between 50 and 80°C; the temperature of the high-pressure end or front end of the expansion generator set is between 150 and 180°C; the temperature of the low-temperature exhaust steam at the outlet of the expansion generator set is between 30 and 60°C; the high-temperature exhaust steam at different parts of the expansion generator set is respectively input into the shaft seal heating device, the first high-pressure heating device, and the second high-pressure heating device, so that the high-temperature exhaust steam is used to perform heat exchange and temperature increase on the inorganic working fluid condensate step by step, thereby realizing energy recycling.

[0020] The expansion generator set is any one of an expander and a steam turbine.

[0021] The cooling medium used in the working medium condensation system is seawater, air and other forms of low-temperature medium.

[0022] The shaft seal heating device, the first high-pressure heating device and the second high-pressure heating device are respectively selected from one or more of a floating head heat exchanger, a U-tube heat exchanger, a fixed tube plate heat exchanger, a plate heat exchanger, a coil heat exchanger, a heat pipe heat exchanger, a plate-fin heat exchanger, a jacketed heat exchanger, a spray heat exchanger or an immersed coil heat exchanger; preferably, a coil heat exchanger is used.

[0023] The working medium boosting system is preferably a boosting pump, which is a common device in the prior art. The present invention has no special restrictions on the boosting pump, and a centrifugal pump is commonly used.

[0024] The basic principle of this utility model:

[0025] After the liquid inorganic working medium is heated, gasified and superheated in the boiler, it is transformed into high-temperature and high-pressure steam, which is input into the expansion generator set through the pipeline, where it performs work and generates electricity;

[0026] The high-temperature and high-pressure steam of the inorganic working fluid is converted into low-temperature exhaust steam after doing work. After flowing out of the expansion generator set, it is condensed by heat exchange in the working fluid condensation system to form liquid inorganic working fluid condensate.

[0027] After being pressurized by the working fluid boosting system 4, the inorganic working fluid condensate flows through the shaft seal heating device, the first high-pressure heating device, and the second high-pressure heating device in sequence; the high-temperature exhaust steam is used for heat exchange and temperature increase, and the inorganic working fluid condensate flows into the boiler after being heated in multiple stages, starting a new power cycle.

[0028] According to the technical solution of the present invention, the boiler 1 is used to heat the liquid inorganic working medium. After the liquid inorganic working medium is heated, vaporized and superheated, it generates high-temperature and high-pressure steam required for the system to generate power, which is input into the expansion generator set to generate work.

[0029] The boiler can be a flue gas waste heat boiler with supplementary combustion or a direct combustion boiler. Preferably, the boiler is a flue gas waste heat boiler. When boiler 1 is a flue gas waste heat boiler, the liquid inorganic working fluid exchanges heat with the high-temperature flue gas within the flue gas waste heat boiler, causing the liquid inorganic working fluid to heat up, vaporize, and superheat, generating the high-temperature, high-pressure steam required for power generation. The high-temperature flue gas is cooled to a certain temperature and discharged from the flue gas outlet, achieving the purpose of waste heat utilization.

[0030] The utility model has no special restriction on the source of the high-temperature flue gas of the flue gas waste heat boiler. The high-temperature flue gas can be the high-temperature flue gas generated after combustion of a hot water boiler, a gas turbine, an internal combustion engine, a heating furnace or a reaction furnace.

[0031] When the boiler is a flue gas waste heat boiler, a flue gas three-way regulating valve group is set at the flue gas inlet of the flue gas waste heat boiler. The flue gas three-way regulating valve group is used to regulate the high-temperature flue gas entering the flue gas waste heat boiler. When the amount of high-temperature flue gas is too large or the temperature is too high, part of the high-temperature flue gas is discharged from the flue gas outlet through the bypass through the three-way regulating valve group to prevent the exhaust gas temperature from being too high and the load from being overloaded.

[0032] According to the technical solution of the present invention, preferably, the working fluid condensation system is also provided with a water ring vacuum system, which is connected to the working fluid condensation system to form a vacuum system, extract the non-condensable steam in the inorganic working fluid, and maximize the conversion of the working fluid thermal energy into mechanical energy.

[0033] According to the technical solution of the present invention, preferably, the expansion generator set is further provided with a lubricating oil system, and the lubricating oil system provides the expansion generator set with lubricating oil that meets the requirements to ensure the normal operation of the equipment.

[0034] According to the technical solution of the present invention, preferably, the power generation system is further provided with a condensate storage device, which is connected in parallel with the pipeline downstream of the working fluid condensation system through a first valve and a second valve. When the power generation system is shut down for maintenance or in an emergency, the inorganic working fluid condensate is controlled to flow into the condensate storage device through the first valve and the second valve, which is used to store the inorganic working fluid condensate in the equipment and pipeline.

[0035] According to the technical solution of the present invention, preferably, the power generation system includes multiple sets of boilers for heating and raising the temperature of liquid inorganic working fluids. Accordingly, the inorganic working fluid condensate is divided into multiple paths after flowing out of the working fluid condensation system, and flows into the corresponding boilers for heating after multi-stage heating and raising the temperature. After being heated, gasified, and overheated by the boilers, it is converted into high-temperature and high-pressure steam, which is input into the expansion generator set through the pipeline to start the work power generation cycle.

[0036] According to the technical solution of the present invention, the power generation system further includes an automatic control system for controlling the power generation system.

[0037] According to the technical solution of the present utility model, the power generation system further includes a skid seat steel frame.

[0038] According to the technical solution of the present invention, the expansion generator set, working fluid condensation system, working fluid pressurization system, shaft seal heating device, first high-pressure heating device, second high-pressure heating device, water ring vacuum system, lubricating oil system, and condensate storage device constitute a skid.

[0039] Among them, the expansion generator set is located on the top layer of the skid; the shaft seal heating device, the first high-pressure heating device, the second high-pressure heating device, the water ring vacuum system, and the lubricating oil system are located in the middle layer of the skid; the working fluid condensation system, the working fluid boosting system, and the condensate storage device are located in the bottom layer of the skid.

[0040] Technical effects of this utility model:

[0041] 1. Inorganic working fluid is used as the circulating medium. Inorganic working fluid has good antioxidant properties and does not form iron oxide plasma. Compared with organic working fluid, inorganic working fluid is non-toxic, non-corrosive, flame retardant, environmentally friendly, and pollution-free. It can be used in high temperature and high pressure environments and has broad application prospects.

[0042] 2. The utility model adopts a skid-mounted structure, which is simple and easy to install and manage, and can be widely used in special working conditions such as marine engineering platforms and stations.

[0043] 3. The inorganic working medium of the utility model forms a closed cycle, does not require fixed or continuous row devices, has a simple structure, and has a high material efficiency utilization rate.

[0044] 4. The utility model can combine inorganic working fluids with flue gas waste heat boilers to achieve the recovery and utilization of high-temperature flue gas waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 : Schematic diagram of the structure of the inorganic working fluid closed cycle skid-mounted power generation system provided by the first embodiment of the present invention.

[0046] Figure 2 : Schematic diagram of the structure of the inorganic working fluid closed cycle skid-mounted power generation system provided by the second embodiment of the present invention.

[0047] Figure 3 : A schematic structural diagram of an inorganic working fluid closed-cycle skid-mounted power generation system provided in the third embodiment of the present invention.

[0048] Figure 4 : A schematic structural diagram of an inorganic working fluid closed-cycle skid-mounted power generation system provided in the fourth embodiment of the present invention.

[0049] Figure 5: A schematic structural diagram of an inorganic working fluid closed-cycle skid-mounted power generation system provided in the fifth embodiment of the present invention.

[0050] Description of reference numerals:

[0051] Boiler 1, expansion generator set 2, working fluid condensation system 3, working fluid pressurization system 4, shaft seal heating device 5, first high-pressure heating device 6, second high-pressure heating device 7, flue gas three-way regulating valve group 8, water ring vacuum system 9, lubricating oil system 10, condensate storage device 11, first valve 12, second valve 13. DETAILED DESCRIPTION

[0052] The present invention will now be further described with reference to the accompanying drawings, but the following embodiments do not constitute a limitation to the present invention.

[0053] Figure 1-5 The schematic diagram of the structure of the inorganic working fluid closed cycle skid-mounted power generation system provided by the utility model is shown.

[0054] Example 1

[0055] Figure 1 The utility model shows a schematic structural diagram of an inorganic working fluid closed-cycle skid-mounted power generation system.

[0056] like Figure 1 As shown, the inorganic working fluid closed cycle skid-mounted power generation system includes: a boiler 1, an expansion generator set 2, a working fluid condensation system 3, a working fluid pressurization system 4, a shaft seal heating device 5, a first high-pressure heating device 6, and a second high-pressure heating device 7;

[0057] The boiler 1, the expansion generator set 2, the working medium condensation system 3, the working medium pressurization system 4, the shaft seal heating device 5, the first high-pressure heating device 6, and the second high-pressure heating device 7 are connected in sequence through pipelines;

[0058] After the liquid inorganic working medium is heated, gasified and superheated in the boiler 1, it is transformed into high-temperature and high-pressure steam, which is input into the expansion generator set 2 through the pipeline, where it performs work and generates electricity;

[0059] The inorganic working fluid after doing work is converted into low-temperature exhaust steam. After flowing out of the expansion generator set 2, it is condensed by heat exchange in the working fluid condensation system 3 to form liquid inorganic working fluid condensate.

[0060] The inorganic working fluid condensate flows out of the working fluid condensation system 3 and is pressurized by the working fluid pressurization system 4, and then flows through the shaft seal heating device 5, the first high-pressure heating device 6, and the second high-pressure heating device 7 in sequence;

[0061] The inlet of the shaft seal heating device 5 is connected to the shaft seal portion of the expansion generator set 2 via a pipeline. Part of the high-temperature exhaust steam from the shaft seal portion of the expansion generator set 2 flows into the shaft seal heating device 5, exchanging heat with the inorganic working fluid condensate flowing through the shaft seal heating device 5 to increase its temperature. The high-temperature exhaust steam cools down and condenses, then flows out of the outlet of the shaft seal heating device 5 and is input into the inlet of the working fluid condensation system 3.

[0062] The inlet of the first high-pressure heating device 6 is connected to the middle part of the expansion generator set 2 via a pipeline. Part of the high-temperature exhaust steam in the middle part of the expansion generator set 2 flows into the first high-pressure heating device 6, exchanging heat with the inorganic working fluid condensate flowing through the first high-pressure heating device 6 to increase its temperature. After cooling and condensing, the high-temperature exhaust steam flows out from the outlet of the first high-pressure heating device 6, merges with the outlet of the shaft seal heating device 5, and is then input into the inlet of the working fluid condensation system 3.

[0063] The inlet of the second high-pressure heating device 7 is connected to the high-pressure end or front end of the expansion generator set 2 via a pipeline. Part of the high-temperature exhaust steam from the high-pressure end or front end of the expansion generator set 2 flows into the second high-pressure heating device 7, exchanging heat with the inorganic working fluid condensate flowing through the second high-pressure heating device 7 to increase its temperature. The high-temperature exhaust steam cools down and condenses, then enters the first high-pressure heating device 6, mixes with the working fluid of the first high-pressure heating device 6, flows out from the outlet of the first heating device 6, and merges with the outlet of the shaft seal heating device 5 before being input into the inlet of the working fluid condensation system 3.

[0064] The inorganic working fluid condensate is heated through multi-stage heat exchange and flows into boiler 1, starting a new power cycle.

[0065] Example 2

[0066] Attachment Figure 2 This is a structural schematic diagram of another inorganic working fluid closed-cycle skid-mounted power generation system provided by the utility model.

[0067] Compared with Example 1, the difference between the two is that the boiler 1 is a flue gas waste heat boiler, and a flue gas three-way regulating valve group 8 is provided at the flue gas inlet of the flue gas waste heat boiler. The flue gas three-way regulating valve group 8 is used to regulate the high-temperature flue gas entering the flue gas waste heat boiler 1. When the amount of high-temperature flue gas is too large or the temperature is too high, part of the high-temperature flue gas is discharged from the flue gas outlet through a bypass through the three-way regulating valve group 8 to prevent the exhaust gas temperature from being too high and the load from being overloaded.

[0068] When boiler 1 is a flue gas waste heat boiler, the liquid inorganic working fluid exchanges heat with the high-temperature flue gas in the flue gas waste heat boiler, achieving heating, vaporization, and superheating of the liquid inorganic working fluid, generating high-temperature and high-pressure steam required for system power generation, while the high-temperature flue gas is cooled to a certain temperature and discharged from the flue gas outlet, thereby achieving the purpose of waste heat utilization.

[0069] The utility model has no particular limitation on the source of the high-temperature flue gas, and the high-temperature flue gas may be the high-temperature flue gas generated by combustion of a hot water boiler, a gas turbine, an internal combustion engine, a heating furnace or a reaction furnace.

[0070] Example 3

[0071] Attachment Figure 3 This is a structural schematic diagram of another inorganic working fluid closed-cycle skid-mounted power generation system provided by the utility model.

[0072] Compared with Example 2, the difference between the two is that a condensate storage device 11 is provided downstream of the working fluid condensation system 3, and the condensate storage device 11 is connected in parallel with the pipeline downstream of the working fluid condensation system 3 through a first valve 12 and a second valve 13. When the power generation system is shut down for maintenance or in an emergency, the first valve 12 and the second valve 13 are used to control the inorganic working fluid condensate to flow into the condensate storage device 11 for storing the inorganic working fluid condensate in the equipment and pipeline.

[0073] Example 4

[0074] Attachment Figure 4 This is a structural schematic diagram of another inorganic working fluid closed-cycle skid-mounted power generation system provided by the utility model.

[0075] Compared with Example 3, the difference between the two is:

[0076] The working medium condensation system 3 is provided with a water ring vacuum system 9, which is connected to the working medium condensation system 3 to form a vacuum system to cool the inorganic working medium into a liquid working medium;

[0077] The expansion generator set 2 is further provided with a lubricating oil system 10. The lubricating oil system 9 provides the expansion generator set 2 with lubricating oil that meets the requirements to ensure the normal operation of the equipment.

[0078] Example 5

[0079] Attachment Figure 5 This is a structural schematic diagram of another inorganic working fluid closed-cycle skid-mounted power generation system provided by the utility model.

[0080] Compared with Example 4, the difference between the two is:

[0081] It includes multiple sets of boilers 1, which are used to heat and increase the temperature of liquid inorganic working fluids; accordingly, the inorganic working fluid condensate is divided into multiple paths after flowing out of the working fluid condensation system 3, and after multi-stage heating and temperature increase, it flows into the corresponding boilers for heating. After heating, gasification and superheating in the boilers, it is converted into high-temperature and high-pressure steam, and is input into the expansion generator set 2 through the pipeline to start the power cycle.

[0082] The known technologies in the art involved in this utility model are not described in detail. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model shall be included in the scope of protection of the utility model.

Claims

1. An inorganic working fluid closed cycle skid-mounted power generation system, comprising: Boiler, expansion generator set, working fluid condensation system, working fluid pressurization system, shaft seal heating device, first high-pressure heating device and second high-pressure heating device; The boiler, the expansion generator set, the working medium condensation system, the working medium pressurization system, the shaft seal heating device, the first high-pressure heating device and the second high-pressure heating device are connected in sequence through pipelines; The liquid inorganic working fluid is heated in the boiler and converted into high-temperature and high-pressure steam, which flows into the expansion generator set to perform work and generate electricity; The inorganic working fluid after doing work is converted into low-temperature exhaust steam, which flows out of the expansion generator set and is condensed by the working fluid condensation system through heat exchange to form liquid inorganic working fluid condensate; After being pressurized by the working medium pressurizing system, the inorganic working fluid condensate flows through the shaft seal heating device, the first high-pressure heating device, and the second high-pressure heating device in sequence; The inlet of the shaft seal heating device is connected to the shaft seal part of the expansion generator set. The high-temperature exhaust steam from the shaft seal part flows into the shaft seal heating device to heat the inorganic working fluid condensate flowing through it. The inlet of the first high-pressure heating device is connected to the middle part of the expansion generator set, and the high-temperature exhaust steam in the middle part flows into the first high-pressure heating device to heat the inorganic working fluid condensate flowing therethrough; The inlet of the second high-pressure heating device is connected to the high-pressure end or the front end of the expansion generator set, and the high-temperature exhaust steam from the high-pressure end or the front end flows into the second high-pressure heating device to heat the inorganic working fluid condensate flowing therethrough; After the inorganic working fluid condensate is heated through multi-stage heat exchange, it flows into the boiler and starts the power cycle.

2. The power generation system according to claim 1, wherein: The inorganic working fluid is deionized water or RH400.

3. The inorganic working fluid closed cycle skid-mounted power generation system according to claim 2, characterized in that: The boiler is a flue gas waste heat boiler, in which the liquid inorganic working medium exchanges heat with the high-temperature flue gas to increase its temperature and is converted into high-temperature and high-pressure steam.

4. The power generation system according to claim 3, wherein: A flue gas three-way regulating valve group is provided at the flue gas inlet of the flue gas waste heat boiler to regulate the flue gas entering the flue gas waste heat boiler.

5. The power generation system according to claim 4, wherein: A condensate storage device is also provided, which is connected in parallel to a pipeline downstream of the working medium condensation system via a first valve and a second valve, and is used for storing inorganic working medium condensate.

6. The power generation system according to claim 5, wherein: The expansion generator set is provided with a lubricating oil system.

7. The power generation system according to claim 6, wherein: The working fluid condensation system is further provided with a water ring vacuum system, which is connected to the working fluid condensation system and is used to form a vacuum, extract the non-condensable steam in the inorganic working fluid, and maximize the conversion of the working fluid thermal energy into mechanical energy.

8. The power generation system according to claim 1, wherein: The expansion generator set is selected from one of an expander and a steam turbine.

9. The power generation system according to claim 1, wherein: The cooling medium of the working medium condensation system is seawater, air or other forms of low-temperature medium.

10. The power generation system according to claim 1, wherein: The shaft seal heating device, the first high-pressure heating device, and the second high-pressure heating device are selected from one or more of a floating head heat exchanger, a U-tube heat exchanger, a fixed tube plate heat exchanger, a plate heat exchanger, a coil heat exchanger, a heat pipe heat exchanger, a plate-fin heat exchanger, a jacketed heat exchanger, a spray heat exchanger, or an immersed coil heat exchanger.

11. The power generation system according to claim 10, wherein: The first high-pressure heating device and the second high-pressure heating device adopt coil-wound heat exchangers.

12. The power generation system according to claim 7, wherein: The expansion generator set, working medium condensation system, working medium pressurization system, shaft seal heating device, first high-pressure heating device, second high-pressure heating device, water ring vacuum system, lubricating oil system, and condensate storage device constitute a skid; Among them, the expansion generator set is located on the top layer of the skid; The shaft seal heating device, the first high-pressure heating device, the second high-pressure heating device, the water ring vacuum system, and the lubricating oil system are located in the middle layer of the skid; the working fluid condensation system, the working fluid pressurization system, and the condensate storage device are located in the bottom layer of the skid.

13. The power generation system according to any one of claims 1 to 12, characterized in that: It includes multiple sets of boilers, which are used to heat and increase the temperature of liquid inorganic working fluids. After the inorganic working fluid condensate flows out of the working fluid condensation system, it is divided into multiple paths, and after multi-stage heating and temperature increase, it flows into the corresponding boilers respectively. After heating, gasification and superheating in the boilers, it is converted into high-temperature and high-pressure steam, which is input into the expansion generator set to start the power cycle.

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