Multi-heat source heat pump high-temperature steam supply system and working method thereof

Abstract

The present application relates to a multi-heat source heat pump high-temperature steam supply system, which includes a heat pump heating system, a solar-assisted flash evaporation system and a steam compression system, as well as pipelines and valves required to realize and control fluid flow. The multi-heat source heat pump high-temperature steam supply system described herein may also include an electric heat storage auxiliary system. The present application also relates to a working method of the multi-heat source heat pump high-temperature steam supply system as described above. The multi-heat source heat pump high-temperature steam supply system described herein operates reliably and can provide water vapor in different temperature and pressure ranges, and can provide water vapor with a temperature greater than or equal to 200°C and a pressure greater than or equal to 15 atmospheres.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump energy saving, and in particular to a multi-heat source heat pump high-temperature steam supply system and a working method of the multi-heat source heat pump high-temperature steam supply system. Background Art

[0002] Steam boilers can provide high-temperature and high-pressure steam and are widely used in various process flows in industry and daily life. Existing boilers mainly include fuel boilers and electric boilers, and fuel boilers include coal-fired boilers and gas-fired boilers. Fuel boilers directly use the combustion heat of fuel to generate steam, and the operating cost is often relatively low. However, during the combustion process, due to the presence of impurities in the fuel, pollutants such as nitrogen oxides and greenhouse gases such as carbon dioxide will be produced. Since coal-fired boilers will generate a lot of pollution during operation, with the continuous increase in national environmental protection efforts in recent years, coal-fired boilers have been continuously banned and transformed. Even cleaner gas boilers will emit a lot of carbon dioxide during the combustion process. Moreover, gas boilers are also facing the problem of "gas shortage", that is, insufficient supply of natural gas, especially in winter when heating demand is strong.

[0003] In comparison, electric boilers have a wider range of adaptability. Electric boilers can directly convert electrical energy into thermal energy for generating steam. Compared with fuel boilers, electric boilers are not only environmentally friendly, but also have more flexible adjustment capabilities. However, in terms of energy conversion efficiency, the electric-to-heat conversion efficiency of electric boilers is less than 1, that is, one unit of electrical energy can only be converted into less than one unit of thermal energy, which will lead to huge electricity consumption and increased use costs, and at the same time, a greater impact on the load of the national power grid. If electric boilers are used on a large scale to generate steam, it will be necessary to upgrade the power grid, which will cost a lot.

[0004] Although fuel-fired industrial boilers will still be the leading product of industrial boilers for a long time in the future, fuel-fired boilers cause serious pollution to the environment. With the increasingly stringent requirements of the country for energy conservation and environmental protection, the use of clean fuels and corresponding new technologies for high-efficiency, energy-saving, and low-pollution industrial boilers will be the trend of product development. In addition to being affected by factors such as the speed of national economic development and investment scale, the future development of the industrial boiler product market will be increasingly restricted by energy policies and energy conservation and environmental protection requirements. Therefore, as an innovative energy-saving technology, the use of heat pump steam systems to generate high-temperature and high-pressure steam will develop rapidly.

[0005] The industry has conducted some research on using a heat pump steam system to generate high-temperature and high-pressure steam. For example, a Chinese invention patent application with application number "201110170741.0" and title "A heat pump steam engine" discloses a heat pump steam engine, which includes a heat pump system, a plate heat exchanger connected to the heat pump system through a reversing valve, a fin heat exchanger connected to the heat pump system at one end through the reversing valve and connected to the heat pump system at the other end through a first control device and a second control device, and a steam generation system connected to the plate heat exchanger. A Chinese utility model patent with application number "201721252611.0" and title "Air Energy Heat Pump Steam Unit" has made improvements on the above-mentioned prior art by replacing the plate heat exchanger with a plate heat exchanger group including a heat release medium channel group and a heat absorption medium channel group, thereby reducing the maintenance workload and improving the working efficiency of the heat pump system.

[0006] In addition, the application number is "201810639688.6" and the title is "An air source CO 2 The Chinese invention patent of "heat pump steam unit" discloses an air source CO 2 The heat pump steam unit includes a first-stage compressor, a second-stage compressor, a gas cooler, a multi-fluid heat exchanger, an expander, an ejector, an evaporator, a first expansion valve, a gas-liquid separator, a flash tank and a hot water circulation pump; the outlet of the first-stage compressor is connected to the cold-side working medium inlet of the multi-fluid heat exchanger, the cold-side working medium outlet of the multi-fluid heat exchanger is connected to the inlet of the second-stage compressor, the outlet of the second-stage compressor is connected to the working medium inlet of the gas cooler, the working medium outlet of the gas cooler is connected to the hot-side working medium inlet of the multi-fluid heat exchanger, the hot-side working medium outlet of the multi-fluid heat exchanger is connected to the inlet of the expander, the outlet of the expander is connected to the working fluid inlet of the ejector, the ejection fluid inlet of the ejector is connected to the working medium outlet of the evaporator, the outlet of the ejector is connected to the inlet of the gas-liquid separator, the gas outlet of the gas-liquid separator is connected to the inlet of the first-stage compressor, the liquid outlet of the gas-liquid separator is connected to the working medium inlet of the evaporator via the first expansion valve, and the flash tank is connected to the gas cooler via the hot water circulation pump. The heat pump system disclosed in the patent document reduces the CO at the inlet of the second-stage compressor. 2 The temperature is increased by the ejector to increase the CO 2 pressure, thereby increasing the operational reliability of the heat pump system.

[0007] In addition, the Chinese invention patent with application number "202010741387.1" and title "A multi-pressure level air-supplemented high-temperature heat pump steam system" discloses a multi-pressure level air-supplemented high-temperature heat pump steam system, wherein the high-temperature heat pump steam system is composed of a heat source module, a high-temperature heat pump circulation module and an evaporation module, and the heat source module, the high-temperature heat pump circulation module and the evaporation module are composed of a heat source inlet, a heat source throttle valve, an evaporator, a heat source outlet, an air-supplemented compressor, a main compressor, a condenser, a subcooler, a heat recovery control valve group, a first heat exchanger, a first-level expansion valve, a first flash evaporator, a second heat exchanger, a second-level expansion valve, an evaporation system expansion valve, a second flash evaporator, a steam outlet, a first throttle valve, a converging tee, a second throttle valve, a make-up water inlet and a water pump, and the evaporator, the condenser, the subcooler, the first heat exchanger and the second heat exchanger all include a hot end and a cold end. The main compressor of the patent document includes a low-stage compressor, a mixing chamber and a high-stage compressor which are interconnected, so that high-temperature and high-pressure steam can be prepared under multi-stage pressure and liquid hammer phenomenon in the main compressor can be reduced.

[0008] However, the technology disclosed in the prior art for preparing high-temperature and high-pressure steam through a heat pump system still has shortcomings such as a single heat source, strong dependence on the environment, instability, poor performance, or limited system working modes. Summary of the invention

[0009] The purpose of the present invention is to provide a multi-heat source heat pump high-temperature steam supply system in order to overcome the defects of the above-mentioned prior art. In one embodiment, the multi-heat source heat pump high-temperature steam supply system described herein includes a heat pump heating system, a solar-assisted flash evaporation system, and a steam compression system. By combining solar energy and the heat pump heating system, the solar energy, heat energy in the air, waste heat, and clean renewable energy can be fully utilized to improve the performance of the entire heat pump system.

[0010] In a preferred embodiment, the multi-heat source heat pump high-temperature steam supply system described herein may also include an electric heat storage auxiliary system, which can store a large amount of high-temperature heat during off-peak electricity. It can not only ensure the system's high-temperature and high-pressure steam supply when solar energy is insufficient, but also provide the steam compression system with higher temperature and pressure steam, thereby further increasing the exhaust temperature and pressure of the steam compression system. This not only improves the operational reliability of the entire multi-heat source heat pump high-temperature steam supply system, but also significantly expands the temperature and pressure range of water vapor that can be supplied by the entire multi-heat source heat pump high-temperature steam supply system. The multi-heat source heat pump high-temperature steam supply system described herein uses a variety of heat sources in a comprehensive manner, and can be selected and used by a variety of circuits in the system circuit. With the assistance of electric heat storage, the supply of high-temperature and high-pressure steam is achieved in different ways.

[0011] The purpose of the present application is also to provide a working method of the multi-heat source heat pump high-temperature steam supply system as described above.

[0012] In a first aspect, the present application provides a multi-heat source heat pump high-temperature steam supply system, characterized in that it includes a heat pump heating system, a solar-assisted flash evaporation system and a steam compression system, as well as pipelines and valves required to realize and control fluid flow;

[0013] The heat pump heating system comprises a heat pump evaporator, a heat pump compressor and a heat preservation water tank, wherein the heat pump evaporator, the heat pump compressor and the heat preservation water tank are sequentially connected to form a fluid flow loop, wherein the heat pump evaporator is used to evaporate the heat pump working medium in the heat pump heating system into low-temperature and low-pressure steam, the heat preservation water tank is used to provide water to the heat pump heating system, and the heat preservation water tank is provided with a spiral heating pipe for conveying high-temperature and high-pressure steam;

[0014] The solar assisted flash evaporation system comprises the insulated water tank, a first circulating water pump, a solar thermal collector, a flash tank and a second circulating water pump, wherein the insulated water tank, the first circulating water pump and the solar thermal collector are sequentially connected to form a fluid flow loop, wherein the insulated water tank, the first circulating water pump, the flash tank and the second circulating water pump form a fluid flow loop for unidirectional flow from the insulated water tank to the flash tank, wherein the insulated water tank, the first circulating water pump, the solar thermal collector, the flash tank and the second circulating water pump form a fluid flow loop for unidirectional flow from the insulated water tank to the flash tank, wherein the flash tank comprises a drain pipe for draining water from the flash tank, and a flash evaporation outlet pipe for conveying fluid from the flash tank to the first steam storage tank, wherein the flash evaporation outlet pipe leads to below the liquid level of the first steam storage tank;

[0015] Wherein, the steam compression system includes the flash tank, the first steam storage tank, the water vapor compressor, the fourth circulating water pump, the fifth circulating water pump and the spray pump, the flash tank, the first steam storage tank and the water vapor compressor form a unidirectional fluid flow path from the flash tank to the water vapor compressor, the flash tank, the fourth circulating water pump, the first steam storage tank and the fifth circulating water pump form a fluid flow loop, and the spray pump is used to spray water working medium into the water vapor compressor.

[0016] In one implementation of the first aspect, the multi-heat source heat pump high-temperature steam supply system further includes an electric heat storage auxiliary system, and the electric heat storage auxiliary system includes the thermal insulation water tank, the third circulating water pump, and the high-temperature electric heat storage tank;

[0017] Wherein, the steam compression system further comprises a second steam storage tank and an ejector pump;

[0018] The heat-insulating water tank, the third circulating water pump, the high-temperature electric heat storage tank, the second steam storage tank, the fifth circulating water pump, the flash tank and the second circulating water pump form a fluid flow loop, the high-temperature electric heat storage tank, the second steam storage tank and the water vapor compressor form a fluid flow loop for unidirectional flow from the high-temperature electric heat storage tank to the water vapor compressor, the ejector pump is used to eject the low-pressure water vapor of the flash tank, and the high-temperature electric heat storage tank, the second steam storage tank, the ejector, the first steam storage tank and the water vapor compressor form a ninth fluid flow loop for unidirectional flow from the high-temperature electric heat storage tank to the water vapor compressor, wherein the high-temperature electric heat storage tank is provided with a spiral evaporation tube for conveying high-temperature and high-pressure water vapor, and the heat storage tank outlet pipe for conveying fluid from the high-temperature electric heat storage tank to the second steam storage tank passes below the liquid level of the second steam storage tank.

[0019] In a second aspect, the present application provides a working method of the multi-heat source heat pump high-temperature steam supply system as described above.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By using a heat pump system to fully utilize the heat energy and waste heat in the air to generate low-pressure steam, and using solar collectors to collect solar energy, fully utilize clean and renewable energy, further increase the flash temperature, and effectively improve system performance.

[0022] 2. Using a water vapor compressor to compress, increase pressure and temperature to generate high-temperature and high-pressure steam effectively realizes the recovery and utilization of low-grade waste heat. Compared with electric boilers, energy consumption is greatly reduced, and compared with fuel boilers, it is cleaner and more environmentally friendly.

[0023] 3. By using the high-temperature electric heat storage tank in the electric heat storage auxiliary system to store cheap clean electricity during the city's off-peak hours, the high-temperature heat storage medium in the high-temperature electric heat storage tank directly heats the water working fluid to form high-temperature and high-pressure water vapor during operation. On the one hand, the water vapor can be directly supplied to the water vapor compressor, and then the temperature and pressure are further increased before being supplied to users. On the other hand, the high-temperature and high-pressure water vapor can also induce low-pressure water vapor formed by flash evaporation, thereby increasing the suction pressure of the water vapor compressor and improving the overall performance of the system.

[0024] 4. Through the use of the electric heat storage auxiliary system, it can be ensured that the system can still be used normally in severe weather conditions such as insufficient heat source or insufficient solar energy, thereby improving the stability and applicability of the system.

[0025] 5. Through the use of the electric heat storage auxiliary system, the source of water vapor at the suction end of the water vapor compressor is more abundant. It can be low-pressure water vapor obtained by direct flash evaporation, medium-pressure water vapor generated by high-temperature and high-pressure water vapor induced flash evaporation of low-pressure water vapor, or high-temperature and high-pressure water vapor generated by the electric heat storage auxiliary system. The temperature and pressure range of water vapor that can be supplied by the entire system is greatly improved, and it can even provide high-temperature and high-pressure water vapor with a temperature greater than or equal to 200°C and a pressure greater than or equal to 15 atmospheres. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a multi-heat source heat pump high-temperature steam supply system according to an embodiment of the present invention.

[0027] In the above drawings, the meanings of the reference numerals are as follows:

[0028] 11-water tank water supply pipe, 12-water tank water supply valve, 13-insulated water tank, 131-spiral heating tube, 14-first stop valve, 15-first circulating water pump, 16-water tank first water outlet pipe, 17-second stop valve, 18-solar collector, 19-water tank first return pipe, 20-third stop valve, 21-water tank outlet bypass pipe, 22-fourth stop valve, 23-flash tank water inlet pipe, 24-fifth stop valve, 25-first check valve, 26-flash valve, 27-sixth stop valve, 28-water tank The second return pipe, 29-the second circulating water pump, 31-heat pump condenser, 32-heat pump expansion valve, 33-heat pump expansion pipe, 34-heat pump heat source outlet pipe, 35-heat pump evaporator, 36-heat pump heat source inlet pipe, 37-heat pump compressor, 38-heat pump exhaust pipe, 39-heat pump suction pipe, 41-flash tank, 411-dispersed flash pipe, 42-seventh stop valve, 43-flash outlet pipe, 44-first steam storage tank, 45-eighth stop valve, 46-second one-way valve, 47-water vapor compressor suction pipe, 48-steam compressor, 49-steam compressor exhaust pipe, 51-water tank second outlet pipe, 52-ninth stop valve, 53-third circulating water pump, 54-third one-way valve, 55-high temperature electric heat storage tank, 551-spiral evaporation pipe, 56-heat storage tank outlet pipe, 57-fourth one-way valve, 58-second steam storage tank, 59-fifth one-way valve, 60-injection pump, 61-tenth stop valve, 62-injection pipe, 63-power pipe, 64-sixteenth stop valve, 65-second steam storage tank first outlet pipe , 66-the sixth one-way valve, 67-the second air outlet pipe of the second steam tank, 71-the fourth circulating water pump, 72-the water inlet pipe of the second steam tank, 73-the eleventh stop valve, 74-the twelfth stop valve, 75-the water inlet pipe of the first steam tank, 76-the thirteenth stop valve, 77-the water outlet pipe of the second steam tank, 78-the fourteenth stop valve, 79-the water outlet pipe of the first steam tank, 80-the fifth circulating water pump, 81-the fifteenth stop valve, 82-the drain pipe, 91-the water spray regulating valve, 92-the water spray pump, and 93-the water spray pipe. DETAILED DESCRIPTION

[0029] Unless otherwise defined, the technical terms or scientific terms used in this specification and claims shall be the ordinary meanings understood by persons with ordinary skills in the technical field to which the present invention belongs. All the values ​​from the lowest value to the highest value listed herein refer to all the values ​​obtained by incrementing the lowest value and the highest value by one unit when the difference between the lowest value and the highest value is more than two units. In the description of the invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0030] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0031] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be noted that in the specific description of these embodiments, for the sake of concise description, this specification cannot provide a detailed description of all the features of the actual embodiments. Without departing from the spirit and scope of the present invention, those skilled in the art may modify and replace the embodiments of the present invention, and the resulting embodiments are also within the scope of protection of the present invention.

[0032] Example 1

[0033] The present embodiment provides a multi-heat source heat pump high-temperature steam supply system and a working method thereof. The multi-heat source heat pump high-temperature steam supply system described in the present embodiment includes a heat pump heating system, a solar-assisted flash evaporation system and a steam compression system. In this embodiment, the heat pump heating system and the solar-assisted flash evaporation system are connected through an insulated water tank 13, and the insulated water tank 13 has a spiral heating tube 131, and the spiral heating tube 131 can effectively achieve uniform heating of the water body in the insulated water tank, and the solar-assisted flash evaporation system and the steam compression system are connected through a flash tank 41, and the flash tank 41 has a dispersed flash tube 411, and the dispersed flash tube 411 can effectively achieve dispersed flash evaporation of high-temperature water to ensure efficient steam output.

[0034] refer to Figure 1 In one embodiment, the heat pump heating system described in this embodiment may include an insulated water tank 13, a spiral heating tube 131, a heat pump condenser tube 31, a heat pump expansion valve 32, a heat pump expansion tube 33, a heat pump heat source outlet tube 34, a heat pump evaporator 35, a heat pump heat source inlet tube 36, a heat pump compressor 37, a heat pump exhaust pipe 38, and a heat pump suction pipe 39. The heat source can enter the heat pump evaporator 35 through the heat pump heat source inlet tube 36 and flow out of the heat pump evaporator 25 from the heat pump heat source outlet tube 36. The heat source is used to evaporate the heat pump working fluid in the heat pump evaporator 35 into low-pressure steam. In one embodiment, the heat source can be in various forms such as an air heat source, a groundwater heat source, and a waste hot water heat source.

[0035] In one embodiment, the heat pump suction pipe 39, the heat pump compressor 37, the heat pump exhaust pipe 38, the spiral heating pipe 131, the heat pump condenser 31, the heat pump expansion valve 32, the heat pump expansion pipe 33 and the heat pump evaporator 35 are connected in sequence to form a fluid flow loop. In one embodiment, the spiral heating pipe 131 is arranged in the insulated water tank 13 and is arranged below the liquid level of the insulated water tank 13. In a specific embodiment, the spiral heating pipe 131 includes a spiral heating pipe inlet and a spiral heating pipe outlet, the spiral heating pipe inlet is fluidly connected to the heat pump steam pipe 38, and the spiral heating pipe outlet is fluidly connected to the heat pump condenser. In a specific embodiment, the spiral heating pipe 131 has a spiral upward trend, first heating the water medium at the bottom of the insulated water tank 13, and then gradually heating the water medium at the top of the insulated water tank 13. The spiral upward structure of the spiral heating pipe 131 can evenly heat the water medium in the insulated water tank 13.

[0036] Still reference Figure 1The solar assisted flash evaporation system of this embodiment may include a water tank water supply pipe 11, a water tank water supply valve 12, an insulated water tank 13, a first stop valve 14, a first circulating water pump 15, a first water tank outlet pipe 16, a second stop valve 17, a solar collector 18, a first water tank return pipe 19, a third stop valve 20, a water tank outlet bypass pipe 21, a fourth stop valve 22, a flash tank inlet pipe 23, a fifth stop valve 24, a first check valve 25, a flash valve 26, a sixth stop valve 27, a second water tank return pipe 28, a second circulating water pump 29, a flash tank 41, and a dispersed flash evaporation pipe 411. In a specific embodiment, the dispersed flash evaporation pipe 411 is disposed in the flash tank 41.

[0037] In one embodiment, the insulated water tank 13, the first stop valve 14, the first circulating water pump 15, the first water outlet pipe 16 of the water tank, the second stop valve 17, the solar collector 18, the first water return pipe 19 of the water tank and the third stop valve 20 are sequentially connected to form a fluid flow loop. The fluid flow loop is used to further heat the water working medium in the insulated water tank 13 with the help of solar energy.

[0038] In this embodiment, the solar assisted flash evaporation system also includes another fluid flow loop. The insulated water tank 13, the first stop valve 14, the first circulating water pump 15, the first water outlet pipe 16 of the water tank, the second stop valve 17, the solar collector 18, the flash tank inlet pipe 23, the fifth stop valve 24, the first check valve 25, the flash valve 26, the flash tank 41, the sixth stop valve 27, the second water return pipe 28 of the water tank and the second circulating water pump 29 are sequentially connected to form a fluid flow loop along a clockwise one-way flow. This fluid flow loop is the main working loop of the solar assisted flash evaporation system. Specifically, the water medium in the insulated water tank 13 is heated by solar energy and then input into the flash tank 41 for the first gas-liquid separation. Part of the water medium is flashed into a low-pressure gas with liquid, which can be used by users after further compression by the water vapor compressor 48. The remaining water medium is condensed into liquid and gathered at the bottom of the flash tank 41, and can flow back to the insulated water tank 13 through the second water return pipe 28 of the water tank under the action of the second circulating water pump 29. The use of this loop can further increase the temperature of the water medium flowing into the flash tank 41, thereby increasing the pressure and temperature of the steam generated by flash evaporation, and improving the efficiency of the entire system.

[0039] In addition, in this embodiment, the solar-assisted flash evaporation system also includes a bypass fluid flow loop to adjust the temperature of the water medium entering the flash tank 41. Specifically, one end of the water tank outlet bypass pipe 21 is connected to the first water tank outlet pipe 16 and is arranged between the first circulating water pump 15 and the second stop valve 17. The other end of the water tank outlet bypass pipe 21 is connected to the flash tank inlet pipe 23 and is arranged between the fifth stop valve 26 and the first check valve 25. The water tank outlet bypass pipe 21 is provided with a fourth stop valve 22.

[0040] Next, still refer to Figure 1 The steam compression system described in this embodiment includes a flash tank 41, a seventh stop valve 42, a flash outlet pipe 43, a first steam storage tank 44, an eighth stop valve 45, a second check valve 46, a water vapor compressor suction pipe 47, a water vapor compressor 48, a water vapor compressor exhaust pipe 49, a fourth circulating water pump 71, a twelfth stop valve 74, a first steam storage tank water inlet pipe 75, a thirteenth stop valve 76, a first steam storage tank outlet pipe 77, a fifth circulating water pump 80, a fifteenth stop valve 81, a flash tank drain pipe 82, a water spray regulating valve 91, a water spray pump 92 and a water spray pipe 93. In this embodiment, the flash tank 41, the seventh stop valve 42, the flash outlet pipe 43, the first steam storage tank 44, the eighth stop valve 45, the second check valve 46, the water vapor compressor suction pipe 47, the water vapor compressor 48 and the water vapor compressor exhaust pipe 49 are sequentially connected to form a fluid flow path from the flash tank 41 to the water vapor compressor 48. This is the main fluid flow loop of the steam compression system. The low-pressure gas flashed by the flash tank 41 is transported to the first steam storage tank 44 for the second gas-liquid separation. The separated water vapor is compressed by the water vapor compressor 48 and supplied to the user. The separated liquid can be returned to the flash tank 41.

[0041] In addition, in this embodiment, the flash tank 41, the fourth circulating water pump 71, the twelfth stop valve 74, the first steam tank inlet pipe 75, the first steam tank 44, the thirteenth stop valve 76, the first steam tank outlet pipe 79 and the fifth circulating water pump 80 are connected in sequence to form a fluid flow loop. In this embodiment, the water spray pipe 93, the water spray pump 92, the water spray regulating valve 91 and the water vapor compressor 48 are connected in sequence to form a one-way fluid flow path. In this embodiment, the flash tank 41, the fifteenth stop valve 81 and the flash tank drain pipe 82 are connected in sequence to form a one-way fluid flow path.

[0042] In one embodiment, through these fluid paths, the water working medium in the flash tank 41 can be sent into the first steam tank 44 through the fourth circulating water pump 71 and the first steam tank water inlet pipe 75 to make up for the water working medium lost in the first steam tank 44 due to evaporation. In another embodiment, the water working medium in the first steam tank 44 can also be sent into the flash tank 41 through the first steam tank water outlet pipe 79 and the fifth circulating water pump 80 to reduce the water working medium in the first steam tank 44 due to the increase of water vapor carrying liquid, thereby ensuring the balance of the water working medium in the first steam tank 44. In another embodiment, the water working medium in the flash tank 41 can be discharged from the system through the drain pipe 82 and the fifteenth stop valve 81.

[0043] Next, the working method of the multi-heat source heat pump high temperature steam supply system described in this embodiment will be introduced. In one embodiment, when solar energy is insufficient, the working method of the multi-heat source heat pump high temperature steam supply system is as follows.

[0044] First, the heat pump heating system starts working. The heat source flows into the heat pump evaporator from the heat pump heat source inlet pipe to heat the heat pump working fluid in the heat pump evaporator, and flows out from the heat pump heat source outlet pipe after cooling. The low-temperature and low-pressure steam generated after the heat pump working fluid absorbs heat and evaporates is sucked in and compressed by the heat pump compressor through the heat pump suction pipe. The high-temperature and high-pressure steam generated flows into the spiral heating pipe in the insulated water tank through the heat pump exhaust pipe. The heat pump working fluid condenses in the spiral heating pipe and flows into the heat pump expansion valve through the heat pump condensing pipe. After expanding in the heat pump expansion valve, it flows back into the heat pump evaporator through the heat pump expansion pipe to form a cycle.

[0045] Secondly, when the water medium in the insulated water tank is heated to above 80°C, the solar assisted flash evaporation system starts to work, the first stop valve, the fourth stop valve and the sixth stop valve are opened, and the high-temperature water medium is sent to the flash tank by the first circulating water pump through the first water outlet pipe of the water tank, the water outlet bypass pipe of the water tank and the water inlet pipe of the flash tank through the first check valve and the flash valve. In the flash tank, the high-temperature water medium is evenly dispersed and flashed through the dispersed flash pipe to produce low-pressure water vapor and low-temperature saturated water. The low-temperature saturated water is sent back to the insulated water tank by the second circulating water pump through the second return pipe of the water tank. At the same time, the water tank water supply valve is opened, and the external pure water medium is replenished into the insulated water tank through the water tank water supply pipe. The dispersed flash pipes are evenly dispersed in the flash tank, so that the dispersed flash pipes are evenly arranged on the flash plane of the flash tank, so that the high-temperature water medium flowing into the flash tank can be evenly distributed and flashed.

[0046] Finally, the steam compression system starts to work, and the seventh stop valve, the eighth stop valve, the twelfth stop valve, the thirteenth stop valve and the water spray regulating valve are opened. The low-pressure water vapor generated in the flash tank flows into the first steam tank through the flash outlet pipe and passes into the first steam tank below the liquid level. The low-pressure water vapor in the first steam tank flows through the water vapor compressor suction pipe through the second one-way valve and is sucked into the water vapor compressor for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the water vapor compressor through the water spray pump and the water spray pipe. Finally, the high-temperature and high-pressure water vapor is sent to the user through the water vapor compressor exhaust pipe. At the same time, the water working medium in the flash tank is sent into the first steam tank through the fourth circulating water pump and the first steam tank inlet pipe to make up for the water working medium lost in the first steam tank due to evaporation. The water working medium in the first steam tank can also be sent into the flash tank through the first steam tank outlet pipe and the fifth circulating water pump to reduce the water working medium in the first steam tank due to the increase of water vapor carrying liquid. The water working medium in the flash tank is discharged from the system through the drain pipe and the fifteenth stop valve.

[0047] In another embodiment, when solar energy is sufficient, the working method of the multi-heat source heat pump high temperature steam supply system is as follows.

[0048] First, the heat pump heating system starts working. The heat source flows into the heat pump evaporator from the heat pump heat source inlet pipe to heat the heat pump working fluid in the heat pump evaporator, and flows out from the heat pump heat source outlet pipe after cooling. The low-temperature and low-pressure steam generated after the heat pump working fluid absorbs heat and evaporates is sucked in and compressed by the heat pump compressor through the heat pump suction pipe. The high-temperature and high-pressure steam generated flows into the spiral heating pipe in the insulated water tank through the heat pump exhaust pipe. The heat pump working fluid condenses in the spiral heating pipe and flows into the heat pump expansion valve through the heat pump condensing pipe. After expanding in the heat pump expansion valve, it flows back into the heat pump evaporator through the heat pump expansion pipe to form a cycle.

[0049] Secondly, when the water medium in the insulated water tank is heated to above 80°C, the solar assisted flash evaporation system starts to work, the second stop valve and the fifth stop valve are opened, the third stop valve and the fourth stop valve are closed, and the high-temperature water medium is sent to the solar collector through the first water outlet pipe of the water tank by the first circulating water pump to absorb solar energy, and then flows through the first return pipe of the water tank and the water inlet pipe of the flash tank through the first check valve and the flash valve to be sent to the flash tank. In the flash tank, the high-temperature water medium is evenly dispersed and flashed through the dispersion flash pipe to produce low-pressure water vapor and low-temperature saturated water. The low-temperature saturated water is sent back to the insulated water tank by the second circulating water pump through the second return pipe of the water tank. At the same time, the water tank water supply valve is opened, and the external pure water medium is replenished into the insulated water tank through the water tank water supply pipe.

[0050] Finally, the steam compression system starts to work, and the seventh stop valve, the eighth stop valve, the twelfth stop valve, the thirteenth stop valve and the water spray regulating valve are opened. The low-pressure water vapor generated in the flash tank flows into the first steam tank through the flash outlet pipe and passes into the first steam tank below the liquid level. The low-pressure water vapor in the first steam tank flows through the water vapor compressor suction pipe through the second one-way valve and is sucked into the water vapor compressor for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the water vapor compressor through the water spray pump and the water spray pipe. Finally, the high-temperature and high-pressure water vapor is sent to the user through the water vapor compressor exhaust pipe. At the same time, the water working medium in the flash tank is sent into the first steam tank through the fourth circulating water pump and the first steam tank inlet pipe to make up for the water working medium lost in the first steam tank due to evaporation. The water working medium in the first steam tank can also be sent into the flash tank through the first steam tank outlet pipe and the fifth circulating water pump to reduce the water working medium in the first steam tank due to the increase of water vapor carrying liquid. The water working medium in the flash tank is discharged from the system through the drain pipe and the fifteenth stop valve.

[0051] In a specific embodiment, the low-pressure water vapor generated in the flash tank 41 flows into the first steam tank 44 through the flash outlet pipe 43 and passes below the liquid level in the first steam tank 44. On the one hand, the low-pressure water vapor can transfer the existing superheat to the liquid in the first steam tank 44, thereby further reducing the possible superheat of the low-pressure water vapor. On the other hand, the low-pressure water vapor can achieve gas-liquid separation through the first steam tank 44. The low-pressure water vapor in the first steam tank 44 flows through the water vapor compressor suction pipe 47 and passes through the second one-way valve 46 to be sucked into the water vapor compressor 48 for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the water vapor compressor 48 through the water spray pump 92 and the water spray pipe 93 to absorb the superheat generated during the compression process to ensure the safe operation of the system. Finally, the high-temperature and high-pressure water vapor is delivered to the user through the water vapor compressor exhaust pipe 49.

[0052] Example 2

[0053] The present embodiment provides a multi-heat source heat pump high-temperature steam supply system, which includes a heat pump heating system, a solar-assisted flash evaporation system, an electric heat storage auxiliary system and a steam compression system.

[0054] The heat pump heating system and solar-assisted flash evaporation system of this embodiment are the same as those of Embodiment 1.

[0055] refer to Figure 1 The electric heat storage auxiliary system described in this embodiment includes a heat preservation water tank 13, a second water outlet pipe 51 of the water tank, a ninth stop valve 52, a third circulating water pump 53, a third one-way valve 54, a high-temperature electric heat storage tank 55, a spiral evaporation pipe 551, a heat storage tank outlet pipe 56, a fourth one-way valve 57, a second steam storage tank 58, a sixteenth stop valve 64, a first outlet pipe 65 of the second steam storage tank, a sixth one-way valve 66, a second outlet pipe 67 of the second steam storage tank, a fourteenth stop valve 78 and a water outlet pipe 77 of the second steam storage tank. The high-temperature electric heat storage tank 55 is provided with a spiral evaporation pipe 551 for conveying high-temperature and high-pressure water vapor. The insulated water tank 13, the second water outlet pipe 51 of the water tank, the ninth stop valve 52, the third circulating water pump 53, the third one-way valve 54, the spiral evaporation tube 551, the heat storage tank outlet pipe 56, the fourth one-way valve 57, the second steam storage tank 58, the fourteenth stop valve 78, the second steam storage tank outlet pipe 77, the fifth circulating water pump 80, the flash tank 41, the sixth stop valve 27, the second water return pipe 28 of the water tank and the second circulating pump 29 are connected in sequence to form a fluid flow loop.

[0056] Still reference Figure 1The steam compression system described in this embodiment includes a flash tank 41, a seventh stop valve 42, a flash outlet pipe 43, a first steam storage tank 44, an eighth stop valve 45, a second one-way valve 46, a water vapor compressor suction pipe 47, a water vapor compressor 48, a water vapor compressor exhaust pipe 49, a second steam storage tank 58, a second steam storage tank second outlet pipe 67, a fifth one-way valve 59, an ejector pump 60, a tenth stop valve 61, an ejector pipe 62, a power pipe 63, a fourth circulating water pump 71, a second steam storage tank water inlet pipe 72, an eleventh stop valve 73, a twelfth stop valve 74, a first steam storage tank water inlet pipe 75, a thirteenth stop valve 76, a first steam storage tank water outlet pipe 79, a fifth circulating water pump 80, a fifteenth stop valve 81, a flash tank drain pipe 82, a water spray regulating valve 91, a water spray pump 92 and a water spray pipe 93. The flash tank 41, the seventh stop valve 42, the flash outlet pipe 43, the first steam storage tank 44, the eighth stop valve 45, the second one-way valve 46, the water vapor compressor suction pipe 47, the water vapor compressor 48 and the water vapor compressor exhaust pipe 49 are connected in sequence to form a fluid flow path from the flash tank 41 to the water vapor compressor 48. The flash tank 41, the fourth circulating water pump 71, the twelfth stop valve 74, the first steam storage tank water inlet pipe 75, the first steam storage tank 44, the thirteenth stop valve 76, the first steam storage tank outlet pipe 79 and the fifth circulating water pump 80 are connected in sequence to form a fluid flow loop. The water spray pipe 93, the water spray pump 92, the water spray regulating valve 91 and the water vapor compressor 48 are connected in sequence to form a one-way fluid flow path. The flash tank 41, the fifteenth stop valve 81 and the flash tank drain pipe 82 are connected in sequence to form a one-way fluid flow path. The second steam storage tank 58, the sixteenth stop valve 64, the second steam storage tank second outlet pipe 67, the sixth check valve 66, the water vapor compressor suction pipe 47 and the water vapor compressor 48 are sequentially connected to form a one-way fluid flow path from the second steam storage tank 58 to the water vapor compressor 48. The second steam storage tank 58, the second steam storage tank second outlet pipe 67, the fifth check valve 59, the ejector pump 60, the power pipe 63, the flash tank 41, the eighth stop valve 45, the second check valve 46, the water vapor compressor suction pipe 47 and the water vapor compressor 48 are sequentially connected to form a one-way fluid flow path from the second steam storage tank 58 to the water vapor compressor 48, and the flash tank 41 is connected to the ejector pump 60 through the ejector pipe 62, and the ejector pipe 62 is provided with a tenth stop valve 61.

[0057] Next, the working method of the multi-heat source heat pump high temperature steam supply system of this embodiment will be described in detail. The working methods of the heat pump heating system and the solar assisted flash evaporation system are the same as those in Embodiment 1 and will not be repeated here.

[0058] When the heat source or solar energy is insufficient, the electric heat storage auxiliary system of this embodiment can start working, thereby ensuring the stable operation of the multi-heat source heat pump high-temperature steam supply system.

[0059] In one embodiment, the working method of the electric heat storage auxiliary system described in this embodiment is as follows. A high-temperature heat storage medium is stored in the high-temperature electric heat storage tank. When the electric heat storage auxiliary system is working, the ninth stop valve is opened, and the water working medium in the insulation water tank flows through the second water outlet pipe of the water tank and the third circulating water pump through the third one-way valve and is sent to the spiral evaporation tube in the high-temperature electric heat storage tank. The water working medium is heated and vaporized in the spiral evaporation tube by the high-temperature heat storage medium in the high-temperature electric heat storage tank, generating high-temperature and high-pressure water vapor with a temperature exceeding 100°C and a pressure exceeding 1 standard atmosphere. The high-temperature and high-pressure water vapor flows through the heat storage tank outlet pipe through the fourth one-way valve and enters below the liquid level of the second steam storage tank. The seventh stop valve is closed, and the fifth one-way valve and the tenth stop valve are opened. The high-temperature and high-pressure water vapor in the second steam storage tank flows into the ejector pump through the second outlet pipe of the second steam storage tank, ejecting the low-pressure water vapor in the flash tank, so that The low-pressure water vapor in the flash tank is injected into the ejector pump through the ejector pipe to increase the pressure, and the medium-pressure water vapor is generated and flows into the first steam storage tank through the power pipe and the flash outlet pipe. The medium-pressure water vapor in the first steam storage tank flows through the suction pipe of the steam compressor through the second one-way valve and is sucked into the steam compressor for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the steam compressor through the spray pump and the spray pipe. Finally, the high-temperature and high-pressure water vapor is sent to the user through the exhaust pipe of the steam compressor. At the same time, the eleventh stop valve and the fourteenth stop valve are both opened, and the water working medium in the flash tank is sent to the second steam storage tank through the fourth circulating water pump and the second steam storage tank inlet pipe to make up for the water working medium lost in the second steam storage tank due to the superheated evaporation of the high-temperature and high-pressure water vapor.

[0060] In another embodiment, the working method of the electric heat storage auxiliary system described in this embodiment is as follows. The high-temperature electric heat storage tank stores a high-temperature heat storage medium. When the electric heat storage auxiliary system is working, the ninth stop valve is opened, and the water working medium in the insulation water tank flows through the second water outlet pipe of the water tank and the third circulating water pump through the third one-way valve and is sent to the spiral evaporation tube in the high-temperature electric heat storage tank. The water working medium is heated and vaporized in the spiral evaporation tube by the high-temperature heat storage medium in the high-temperature electric heat storage tank, generating high-temperature and high-pressure water vapor with a temperature exceeding 100°C and a pressure exceeding 1 standard atmosphere. The high-temperature and high-pressure water vapor flows through the heat storage tank outlet pipe through the fourth one-way valve and enters below the liquid level of the second steam storage tank. The sixteenth one-way valve is opened. The stop valve, the high-temperature and high-pressure water vapor in the second steam tank flows through the first outlet pipe of the second steam tank and the suction pipe of the steam compressor through the sixth one-way valve, and is sucked into and compressed by the steam compressor to produce water vapor with higher temperature and pressure. Finally, the water vapor with higher temperature and pressure is sent to the user through the exhaust pipe of the steam compressor. At the same time, the eleventh stop valve and the fourteenth stop valve are both opened, and the water working medium in the flash tank is sent to the second steam tank through the fourth circulating water pump and the water inlet pipe of the second steam tank to make up for the water working medium lost in the second steam tank due to superheated evaporation of the high-temperature and high-pressure water vapor absorbed.

[0061] In a specific embodiment, the high temperature heat storage medium stored in the high temperature electric heat storage tank 55 can store a large amount of high temperature heat during off-peak hours, and the temperature can exceed 400° C. In a specific embodiment, the water vapor output by the water vapor compressor 48 can have a temperature greater than or equal to 200° C. and a pressure greater than or equal to 15 atmospheres.

[0062] The above description of the embodiments is to facilitate those of ordinary skill in the art to understand and apply the present application. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without having to pay creative labor. Therefore, the present application is not limited to the embodiments herein, and improvements and modifications made by those skilled in the art based on the contents disclosed in the present application without departing from the scope and spirit of the present application are within the scope of the present application.

Claims

1. A multi-heat source heat pump high-temperature steam supply system, It is characterized in that Includes heat pump heating system, solar assisted flash system and steam compression system, as well as the piping and valves required to achieve and control fluid flow; The heat pump heating system comprises a heat pump evaporator, a heat pump compressor and a heat preservation water tank, wherein the heat pump evaporator, the heat pump compressor and the heat preservation water tank are sequentially connected to form a fluid flow loop, wherein the heat pump evaporator is used to evaporate the heat pump working medium in the heat pump heating system into low-temperature and low-pressure steam, the heat preservation water tank is used to provide water to the heat pump heating system, and the heat preservation water tank is provided with a spiral heating pipe for conveying high-temperature and high-pressure steam; The solar assisted flash evaporation system comprises the insulated water tank, a first circulating water pump, a solar thermal collector, a flash tank and a second circulating water pump, wherein the insulated water tank, the first circulating water pump and the solar thermal collector are sequentially connected to form a fluid flow loop, wherein the insulated water tank, the first circulating water pump, the flash tank and the second circulating water pump form a fluid flow loop for unidirectional flow from the insulated water tank to the flash tank, wherein the insulated water tank, the first circulating water pump, the solar thermal collector, the flash tank and the second circulating water pump form a fluid flow loop for unidirectional flow from the insulated water tank to the flash tank, wherein the flash tank comprises a drain pipe for draining water from the flash tank, and a flash evaporation outlet pipe for conveying fluid from the flash tank to the first steam storage tank leads to below the liquid level of the first steam storage tank; Wherein, the steam compression system includes the flash tank, the first steam storage tank, the water vapor compressor, the fourth circulating water pump, the fifth circulating water pump and the spray pump, the flash tank, the first steam storage tank and the water vapor compressor form a unidirectional fluid flow path from the flash tank to the water vapor compressor, the flash tank, the fourth circulating water pump, the first steam storage tank and the fifth circulating water pump form a fifth fluid flow loop, and the spray pump is used to spray water working medium into the water vapor compressor.

2. The multi-heat source heat pump high-temperature steam supply system according to claim 1, It is characterized in that It also includes an electric heat storage auxiliary system, which includes the thermal insulation water tank, a third circulating water pump, and a high-temperature electric heat storage tank; Wherein, the steam compression system further comprises a second steam storage tank and an ejector pump; The heat-insulating water tank, the third circulating water pump, the high-temperature electric heat storage tank, the second steam storage tank, the fifth circulating water pump, the flash tank and the second circulating water pump form a fluid flow loop, the high-temperature electric heat storage tank, the second steam storage tank and the water vapor compressor form a fluid flow loop for unidirectional flow from the high-temperature electric heat storage tank to the water vapor compressor, the ejector pump is used to eject the low-pressure water vapor of the flash tank, and the high-temperature electric heat storage tank, the second steam storage tank, the ejector pump, the first steam storage tank and the water vapor compressor form a ninth fluid flow loop for unidirectional flow from the high-temperature electric heat storage tank to the water vapor compressor, wherein the high-temperature electric heat storage tank is provided with a spiral evaporation tube for conveying high-temperature and high-pressure water vapor, and the heat storage tank outlet pipe for conveying fluid from the high-temperature electric heat storage tank to the second steam storage tank passes below the liquid level of the second steam storage tank.

3. The multi-heat source heat pump high-temperature steam supply system according to claim 2, It is characterized in that The spiral evaporation tube first spirally rises to the highest point of the high-temperature electric heat storage tank in the high-temperature electric heat storage tank, then returns to the lowest point of the high-temperature electric heat storage tank, is divided into multiple fluid flow loops at the lowest point of the high-temperature electric heat storage tank, and then returns to the highest point of the high-temperature electric heat storage tank, and finally merges and connects to the heat storage tank outlet pipe.

4. The multi-heat source heat pump high-temperature steam supply system according to any one of claims 1 to 3, It is characterized in that The flash tank comprises dispersed flash pipes which are evenly distributed in the flash tank.

5. The multi-heat source heat pump high-temperature steam supply system according to claim 1, It is characterized in that The multi-heat source heat pump high-temperature steam supply system includes a heat pump heating system, a solar-assisted flash evaporation system and a steam compression system; The heat pump heating system comprises an insulated water tank, a spiral heating pipe, a heat pump condenser, a heat pump expansion valve, a heat pump expansion pipe, a heat pump heat source outlet pipe, a heat pump evaporator, a heat pump heat source inlet pipe, a heat pump compressor, a heat pump exhaust pipe and a heat pump suction pipe, wherein the heat source enters the heat pump evaporator through the heat pump heat source inlet pipe and flows out of the heat pump evaporator from the heat pump heat source outlet pipe, the spiral heating pipe is arranged in the insulated water tank, and the heat pump suction pipe, the heat pump compressor, the heat pump exhaust pipe, the spiral heating pipe, the heat pump condenser, the heat pump expansion valve, the heat pump expansion pipe and the heat pump evaporator are sequentially connected to form a fluid flow loop; The solar assisted flash evaporation system comprises a water tank water supply pipe, a water tank water supply valve, an insulated water tank, a first stop valve, a first circulating water pump, a first water tank outlet pipe, a second stop valve, a solar collector, a first water tank return pipe, a third stop valve, a water tank outlet bypass pipe, a fourth stop valve, a flash tank inlet pipe, a fifth stop valve, a first check valve, a flash valve, a sixth stop valve, a second water tank return pipe, a second circulating water pump, a flash tank and a dispersed flash evaporation pipe, wherein the dispersed flash evaporation pipe is arranged in the flash tank, and the insulated water tank, the first stop valve, the first circulating water pump, the first water tank outlet pipe, the second stop valve, the solar collector, the first water tank return pipe and the third stop valve are connected in sequence. The heat preservation water tank, the first stop valve, the first circulating water pump, the first water outlet pipe of the water tank, the second stop valve, the solar collector, the water inlet pipe of the flash tank, the fifth stop valve, the first check valve, the flash valve, the flash tank, the sixth stop valve, the second water return pipe of the water tank and the second circulating water pump are connected in sequence to form a fluid flow loop, one end of the water tank water outlet bypass pipe is connected to the first water outlet pipe of the water tank and is arranged between the first circulating water pump and the second stop valve, and the other end is connected to the water inlet pipe of the flash tank and is arranged between the fifth stop valve and the first check valve, and a fourth stop valve is arranged on the water tank water outlet bypass pipe; The steam compression system comprises a flash tank, a seventh stop valve, a flash outlet pipe, a first steam storage tank, an eighth stop valve, a second one-way valve, a water vapor compressor suction pipe, a water vapor compressor, a water vapor compressor exhaust pipe, a fourth circulating water pump, a twelfth stop valve, a first steam storage tank water inlet pipe, a thirteenth stop valve, a first steam storage tank water outlet pipe, a fifth circulating water pump, a fifteenth stop valve, a flash tank drain pipe, a water spray regulating valve, a water spray pump and a water spray pipe, the flash tank, the seventh stop valve, the flash outlet pipe, the first steam storage tank, the eighth stop valve, the second one-way valve, the water vapor compressor suction pipe, the water vapor compressor, the fourth circulating water pump, the twelfth stop valve, the first steam storage tank water inlet pipe, the thirteenth stop valve, the first steam storage tank water outlet pipe, the fifth circulating water pump, the fifteenth stop valve, the flash tank drain pipe, the water spray regulating valve, the water spray pump and the ... The compressor and the exhaust pipe of the steam compressor are connected in sequence to form a fluid flow path from the flash tank to the steam compressor, the flash tank, the fourth circulating water pump, the twelfth stop valve, the first steam storage tank water inlet pipe, the first steam storage tank, the thirteenth stop valve, the first steam storage tank water outlet pipe and the fifth circulating water pump are connected in sequence to form a fluid flow loop, the water spray pipe, the water spray pump, the water spray regulating valve and the steam compressor are connected in sequence to form a one-way fluid flow path, and the flash tank, the fifteenth stop valve and the flash tank drain pipe are connected in sequence to form a one-way fluid flow path.

6. The multi-heat source heat pump high-temperature steam supply system according to claim 5, It is characterized in that The multi-heat source heat pump high-temperature steam supply system includes a heat pump heating system, a solar-assisted flash evaporation system, an electric heat storage auxiliary system and a steam compression system; The heat pump heating system comprises an insulated water tank, a spiral heating pipe, a heat pump condenser, a heat pump expansion valve, a heat pump expansion pipe, a heat pump heat source outlet pipe, a heat pump evaporator, a heat pump heat source inlet pipe, a heat pump compressor, a heat pump exhaust pipe and a heat pump suction pipe, wherein the heat source enters the heat pump evaporator through the heat pump heat source inlet pipe and flows out of the heat pump evaporator from the heat pump heat source outlet pipe, the spiral heating pipe is arranged in the insulated water tank, and the heat pump suction pipe, the heat pump compressor, the heat pump exhaust pipe, the spiral heating pipe, the heat pump condenser, the heat pump expansion valve, the heat pump expansion pipe and the heat pump evaporator are sequentially connected to form a fluid flow loop; The solar assisted flash evaporation system comprises a water tank water supply pipe, a water tank water supply valve, an insulated water tank, a first stop valve, a first circulating water pump, a first water tank outlet pipe, a second stop valve, a solar collector, a first water tank return pipe, a third stop valve, a water tank outlet bypass pipe, a fourth stop valve, a flash tank inlet pipe, a fifth stop valve, a first check valve, a flash valve, a sixth stop valve, a second water tank return pipe, a second circulating water pump, a flash tank and a dispersed flash evaporation pipe, wherein the dispersed flash evaporation pipe is arranged in the flash tank, and the insulated water tank, the first stop valve, the first circulating water pump, the first water tank outlet pipe, the second stop valve, the solar collector, the first water tank return pipe and the third stop valve are connected in sequence. The heat preservation water tank, the first stop valve, the first circulating water pump, the first water outlet pipe of the water tank, the second stop valve, the solar collector, the water inlet pipe of the flash tank, the fifth stop valve, the first check valve, the flash valve, the flash tank, the sixth stop valve, the second water return pipe of the water tank and the second circulating water pump are connected in sequence to form a fluid flow loop, one end of the water tank water outlet bypass pipe is connected to the first water outlet pipe of the water tank and is arranged between the first circulating water pump and the second stop valve, and the other end is connected to the water inlet pipe of the flash tank and is arranged between the fifth stop valve and the first check valve, and a fourth stop valve is arranged on the water tank water outlet bypass pipe; The electric heat storage auxiliary system includes an insulation water tank, a second water outlet pipe of the water tank, a ninth stop valve, a third circulating water pump, a third one-way valve, a high-temperature electric heat storage tank, a spiral evaporator, an air outlet pipe of the heat storage tank, a fourth one-way valve, a second steam storage tank, a sixteenth stop valve, a first air outlet pipe of the second steam storage tank, a sixth one-way valve, a second air outlet pipe of the second steam storage tank, a fourteenth stop valve and an air outlet pipe of the second steam storage tank, wherein the high-temperature electric heat storage tank is provided with a spiral evaporator for conveying high-temperature and high-pressure water vapor, the insulation water tank, the second water outlet pipe of the water tank, the ninth stop valve, the third circulating water pump, the third one-way valve, the spiral evaporator, the air outlet pipe of the heat storage tank, the fourth one-way valve, the second steam storage tank, the fourteenth stop valve, the water outlet pipe of the second steam storage tank, the fifth circulating water pump, the flash tank, the sixth stop valve, the second water return pipe of the water tank and the second circulating water pump are sequentially connected to form a fluid flow loop; The steam compression system includes a flash tank, a seventh stop valve, a flash outlet pipe, a first steam storage tank, an eighth stop valve, a second check valve, a water vapor compressor suction pipe, a water vapor compressor, a water vapor compressor exhaust pipe, a second steam storage tank, a fifth check valve, an ejector pump, a tenth stop valve, an ejector pipe, a power pipe, a fourth circulating water pump, a second steam storage tank water inlet pipe, an eleventh stop valve, a twelfth stop valve, a first steam storage tank water inlet pipe, a thirteenth stop valve, a first steam storage tank water outlet pipe, a fifth circulating water pump, a fifteenth stop valve, and a flash tank drain. The flash tank, the seventh stop valve, the flash outlet pipe, the first steam storage tank, the eighth stop valve, the second check valve, the water vapor compressor suction pipe, the water vapor compressor and the water vapor compressor exhaust pipe are connected in sequence to form a fluid flow path from the flash tank to the water vapor compressor, the flash tank, the fourth circulating water pump, the twelfth stop valve, the first steam storage tank water inlet pipe, the first steam storage tank, the thirteenth stop valve, the first steam storage tank water inlet pipe, the first steam storage tank, the thirteenth stop valve, the second check valve, the water vapor compressor suction pipe, the water vapor compressor and the water vapor compressor exhaust pipe are connected in sequence to form a fluid flow path from the flash tank to the water vapor compressor, the flash tank, the fourth circulating water pump, the twelf ... The valve, the first steam storage tank outlet pipe and the fifth circulating water pump are connected in sequence to form a fluid flow loop, the water spray pipe, the water spray pump, the water spray regulating valve and the water vapor compressor are connected in sequence to form a one-way fluid flow path, the flash tank, the fifteenth stop valve and the flash tank drain pipe are connected in sequence to form a one-way fluid flow path, the second steam storage tank, the sixteenth stop valve, the second steam storage tank second air outlet pipe, the sixth one-way valve, the water vapor compressor suction pipe and the water vapor compressor are connected in sequence to form a one-way fluid flow path from the second steam storage tank to the water vapor compressor, the second steam storage tank, the second steam storage tank second air outlet pipe, the fifth one-way valve, the ejector pump, the power pipe, the flash tank, the eighth stop valve, the second one-way valve, the water vapor compressor suction pipe and the water vapor compressor are connected in sequence to form a one-way fluid flow path from the second steam storage tank to the water vapor compressor, and the flash tank is connected to the ejector pump through an ejector pipe, and the ejector pipe is provided with a tenth stop valve.

7. The working method of the multi-heat source heat pump high temperature steam supply system according to claim 5, It is characterized in that When solar energy is insufficient, the multi-heat source heat pump high temperature steam supply system works as follows: First, the heat pump heating system starts working. The heat source flows into the heat pump evaporator from the heat pump heat source inlet pipe to heat the heat pump working fluid in the heat pump evaporator. After cooling, it flows out from the heat pump heat source outlet pipe. The low-temperature and low-pressure steam generated after the heat pump working fluid absorbs heat and evaporates is sucked in and compressed by the heat pump compressor through the heat pump suction pipe. The high-temperature and high-pressure steam generated flows into the spiral heating pipe in the insulation water tank through the heat pump exhaust pipe. The heat pump working fluid condenses in the spiral heating pipe and flows into the heat pump expansion valve through the heat pump condensing pipe. After expanding in the heat pump expansion valve, it flows back into the heat pump evaporator through the heat pump expansion pipe to form a cycle. Secondly, when the water working medium in the insulated water tank is heated to above 80°C, the solar-assisted flash evaporation system starts to work, the first stop valve, the fourth stop valve and the sixth stop valve are opened, and the high-temperature water working medium is sent to the flash tank by the first circulating water pump through the first water outlet pipe of the water tank, the water outlet bypass pipe of the water tank and the water inlet pipe of the flash tank through the first check valve and the flash valve. In the flash tank, the high-temperature water working medium is evenly dispersed and flashed through the dispersed flash pipe to produce low-pressure water vapor and low-temperature saturated water. The low-temperature saturated water is sent back to the insulated water tank by the second circulating water pump through the second return pipe of the water tank. At the same time, the water tank water supply valve is opened, and the external pure water working medium is replenished into the insulated water tank through the water tank water supply pipe; Finally, the steam compression system starts to work, and the seventh stop valve, the eighth stop valve, the twelfth stop valve, the thirteenth stop valve and the water spray regulating valve are opened. The low-pressure water vapor generated in the flash tank flows into the first steam storage tank through the flash outlet pipe and passes into the first steam storage tank below the liquid level. The low-pressure water vapor in the first steam storage tank flows through the water vapor compressor suction pipe through the second one-way valve and is sucked into the water vapor compressor for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the water vapor compressor through the water spray pump and the water spray pipe. Finally, the high-temperature and high-pressure water vapor is sent to the user through the water vapor compressor exhaust pipe. At the same time, the water working medium in the flash tank is sent into the first steam storage tank through the fourth circulating water pump and the first steam storage tank inlet pipe to make up for the water working medium lost in the first steam storage tank due to evaporation. The water working medium in the first steam storage tank can also be sent into the flash tank through the first steam storage tank outlet pipe and the fifth circulating water pump to reduce the water working medium in the first steam storage tank due to the increase of water vapor carrying liquid. The water working medium in the flash tank is discharged from the system through the drain pipe and the fifteenth stop valve. Alternatively, when solar energy is sufficient, the multi-heat source heat pump high-temperature steam supply system works as follows: First, the heat pump heating system starts working. The heat source flows into the heat pump evaporator from the heat pump heat source inlet pipe to heat the heat pump working fluid in the heat pump evaporator. After cooling, it flows out from the heat pump heat source outlet pipe. The low-temperature and low-pressure steam generated after the heat pump working fluid absorbs heat and evaporates is sucked in and compressed by the heat pump compressor through the heat pump suction pipe. The high-temperature and high-pressure steam generated flows into the spiral heating pipe in the insulation water tank through the heat pump exhaust pipe. The heat pump working fluid condenses in the spiral heating pipe and flows into the heat pump expansion valve through the heat pump condensing pipe. After expanding in the heat pump expansion valve, it flows back into the heat pump evaporator through the heat pump expansion pipe to form a cycle. Secondly, when the water medium in the insulated water tank is heated to above 80°C, the solar assisted flash evaporation system starts to work, the second stop valve and the fifth stop valve are opened, the third stop valve and the fourth stop valve are closed, and the high-temperature water medium is sent to the solar collector through the first water outlet pipe of the water tank by the first circulating water pump to absorb solar energy, and then flows through the first return pipe of the water tank and the water inlet pipe of the flash tank through the first check valve and the flash valve to be sent to the flash tank. In the flash tank, the high-temperature water medium is evenly dispersed and flashed through the dispersed flash pipe to produce low-pressure water vapor and low-temperature saturated water. The low-temperature saturated water is sent back to the insulated water tank by the second circulating water pump through the second return pipe of the water tank. At the same time, the water tank water supply valve is opened, and the external pure water medium is replenished into the insulated water tank through the water tank water supply pipe; Finally, the steam compression system starts to work, and the seventh stop valve, the eighth stop valve, the twelfth stop valve, the thirteenth stop valve and the water spray regulating valve are opened. The low-pressure water vapor generated in the flash tank flows into the first steam tank through the flash outlet pipe and passes into the first steam tank below the liquid level. The low-pressure water vapor in the first steam tank flows through the water vapor compressor suction pipe through the second one-way valve and is sucked into the water vapor compressor for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the water vapor compressor through the water spray pump and the water spray pipe. Finally, the high-temperature and high-pressure water vapor is sent to the user through the water vapor compressor exhaust pipe. At the same time, the water working medium in the flash tank is sent into the first steam tank through the fourth circulating water pump and the first steam tank inlet pipe to make up for the water working medium lost in the first steam tank due to evaporation. The water working medium in the first steam tank can also be sent into the flash tank through the first steam tank outlet pipe and the fifth circulating water pump to reduce the water working medium in the first steam tank due to the increase of water vapor carrying liquid. The water working medium in the flash tank is discharged from the system through the drain pipe and the fifteenth stop valve.

8. The method according to claim 7, It is characterized in that The water vapor pressure output through the flash vapor outlet pipe is below 1 atmosphere and the temperature is within 100° C.; The water vapor pressure output through the exhaust pipe of the water vapor compressor is above 1 atmosphere, and the temperature exceeds 100°C. The maximum pressure will not exceed 15 atmospheres, and the temperature will not exceed 200°C.

9. The working method of the multi-heat source heat pump high temperature steam supply system according to claim 6, It is characterized in that The working method of the electric heat storage auxiliary system is as follows: The high-temperature electric heat storage tank stores a high-temperature heat storage medium. When the electric heat storage auxiliary system is working, the ninth stop valve is opened, and the water working medium in the insulation water tank flows through the second water outlet pipe of the water tank and the third circulating water pump through the third one-way valve and is sent to the spiral evaporation tube in the high-temperature electric heat storage tank. The water working medium is heated and vaporized in the spiral evaporation tube by the high-temperature heat storage medium in the high-temperature electric heat storage tank, generating high-temperature and high-pressure water vapor with a temperature exceeding 100° C. and a pressure exceeding 1 standard atmospheric pressure. The high-temperature and high-pressure water vapor flows through the heat storage tank outlet pipe through the fourth one-way valve and enters below the liquid level of the second steam storage tank. The seventh stop valve is closed, and the fifth one-way valve and the tenth stop valve are opened. The high-temperature and high-pressure water vapor in the second steam storage tank flows into the ejector pump through the second outlet pipe of the second steam storage tank to eject the low-pressure water vapor in the flash tank. The low-pressure water vapor in the flash tank is injected into the ejector pump through the ejector pipe to increase the pressure, and the medium-pressure water vapor is generated and flows into the first steam storage tank through the power pipe and the flash outlet pipe. The medium-pressure water vapor in the first steam storage tank flows through the suction pipe of the steam compressor through the second one-way valve and is sucked into the steam compressor for compression to generate high-temperature and high-pressure water vapor. During the compression process, the external pure water working medium is sprayed into the steam compressor through the spray pump and the spray pipe. Finally, the high-temperature and high-pressure water vapor is sent to the user through the exhaust pipe of the steam compressor. At the same time, the eleventh stop valve and the fourteenth stop valve are both opened, and the water working medium in the flash tank is sent to the second steam storage tank through the fourth circulating water pump and the second steam storage tank inlet pipe to make up for the water working medium lost in the second steam storage tank due to the superheated evaporation of the high-temperature and high-pressure water vapor. or, The high-temperature electric heat storage tank stores a high-temperature heat storage medium. When the electric heat storage auxiliary system is working, the ninth stop valve is opened, and the water working medium in the insulation water tank flows through the second water outlet pipe of the water tank and the third circulating water pump through the third one-way valve and is sent to the spiral evaporation tube in the high-temperature electric heat storage tank. The water working medium is heated and vaporized in the spiral evaporation tube by the high-temperature heat storage medium in the high-temperature electric heat storage tank, generating high-temperature and high-pressure water vapor with a temperature exceeding 100° C. and a pressure exceeding 1 standard atmospheric pressure. The high-temperature and high-pressure water vapor flows through the heat storage tank outlet pipe through the fourth one-way valve and enters the liquid of the second steam storage tank. Below the surface, open the sixteenth stop valve, and the high-temperature and high-pressure water vapor in the second steam tank flows through the first outlet pipe of the second steam tank and the suction pipe of the steam compressor through the sixth one-way valve and is sucked and compressed by the steam compressor. Finally, the high-temperature and high-pressure water vapor is sent to the user through the exhaust pipe of the steam compressor. At the same time, open the eleventh stop valve and the fourteenth stop valve, and send the water working medium in the flash tank into the second steam tank through the fourth circulating water pump and the water inlet pipe of the second steam tank to make up for the water working medium lost in the second steam tank due to superheated evaporation of the high-temperature and high-pressure water vapor.

10. The method according to claim 9, It is characterized in that The water vapor pressure outputted through the first gas outlet pipe of the second steam storage tank exceeds 1 atmosphere and the temperature exceeds 100° C.; The water vapor pressure output through the exhaust pipe of the water vapor compressor can be as high as 15 atmospheres and the temperature can be over 200°C.

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