CN113932208A

CN113932208A - Multi-heat-source heat pump high-temperature steam supply system and working method thereof

Info

Publication number: CN113932208A
Application number: CN202111394011.9A
Authority: CN
Inventors: 胡斌; 吴迪; 江南山
Original assignee: Shanghai Nuotong New Energy Technology Co ltd
Current assignee: Shanghai Nuotong New Energy Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-01-14

Abstract

The application relates to a multi-heat-source heat pump high-temperature steam supply system, which comprises a heat pump heating system, a solar auxiliary flash evaporation system, a steam compression system, and pipelines and valves required for realizing and controlling 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 application also relates to a working method of the multi-heat-source heat pump high-temperature steam supply system. The multi-heat source heat pump high-temperature steam supply system described herein operates reliably, can provide water vapor at different temperature and pressure ranges, can provide water vapor at temperatures greater than or equal to 200 ℃ and above, and at pressures greater than or equal to 15 atmospheres.

Description

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

Technical Field

The invention relates to the technical field of heat pump energy conservation, in particular to a multi-heat-source heat pump high-temperature steam supply system and a working method thereof.

Background

The steam boiler can provide high-temperature and high-pressure steam and is widely applied to various process flows of industry and daily life. The existing boilers mainly comprise fuel boilers and electric boilers, and the fuel boilers comprise coal-fired boilers, gas-fired boilers and the like. The fuel boiler directly utilizes the combustion heat of the fuel to generate steam, and the operation cost is lower. However, during combustion, due to the impurities present in the fuel, pollutants such as nitrogen oxides and greenhouse gases such as carbon dioxide are produced. As the coal-fired boiler generates a great deal of pollution in the operation process, the coal-fired boiler is continuously banned and reformed along with the continuous increase of the national environmental protection strength in recent years. Even cleaner gas boilers emit significant amounts of carbon dioxide during combustion. Furthermore, gas-fired boilers also face the problem of "gas shortage", i.e. insufficient supply of natural gas, especially in the winter season where heating demand is high.

Compared with the prior art, the electric heating boiler has wider adaptability. Electric boilers can directly convert electrical energy into heat energy for generating steam. Compared with a fuel boiler, the electric heating boiler not only has environmental protection, but also has more flexible adjusting capability. However, in terms of energy conversion efficiency, the electric heat conversion efficiency of the electric heating boiler is lower than 1, that is, one part of electric energy can only be converted into less than one part of heat energy, which results in huge electric energy consumption, increased use cost and larger load impact on national power grid. If large-scale electric boiler that uses produces steam, will need to upgrade to the electric wire netting, the input cost is huge.

Although fuel industrial boilers are still the dominant products of industrial boilers for a considerable period of time in the future. However, as the fuel boiler causes serious pollution to the environment, along with the increasingly strict requirements of the current nation on energy conservation and environmental protection, the high-efficiency, energy-saving and low-pollution industrial boiler adopting clean fuel and corresponding new technology is a trend of product development. The development of the industrial boiler product market in the future is influenced by factors such as the development speed of national economy, investment scale and the like, and is increasingly restricted by energy policy and energy-saving and environment-friendly requirements. Therefore, as an innovative energy-saving technology, the heat pump steam system for generating high-temperature and high-pressure steam will be developed rapidly.

Some research has been conducted in the industry to use heat pump steam systems to generate high temperature, high pressure steam. For example, chinese patent application No. 201110170741.0 entitled "a heat pump steam engine" discloses a heat pump steam engine including a heat pump system, a plate heat exchanger connected to the heat pump system through a reversing valve, a fin heat exchanger having one end connected to the heat pump system through the reversing valve and the other end connected to the heat pump system through a first control device and a second control device, respectively, and a steam generation system connected to the plate heat exchanger. The chinese utility model patent that application number is "201721252611.0" and title is "air energy heat pump steam unit" improves on the basis of above-mentioned prior art, replaces plate heat exchanger for the plate heat exchanger group including exothermic medium passageway group and heat absorption medium passageway group to reduce and overhaul work load, improve heat pump system work efficiency.

Further, application No. 201810639688.6 entitled "an air Source CO₂Chinese invention patent of heat pump steam unit discloses an air source CO₂The heat pump steam unit comprises 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 circulating pump; the export of first stage compressor links to each other with the cold side working medium entry of multifluid heat exchanger, the cold side working medium export of multifluid heat exchanger links to each other with the entry of second stage compressor, the export of second stage compressor links to each other with gas cooler's working medium entry, gas cooler's working medium export links to each other with multifluid heat exchanger's hot side working medium entry, the hot side working medium export of multifluid heat exchanger links to each other with the entry of expander, the export of expander links to each other with the working fluid entry of sprayer, the injection fluid entry of sprayer links to each other with the working medium export of evaporimeter, the export of sprayer links to each other with vapour and liquid separator's entry, vapour and liquid separator's gas outlet links to each other with the entry of first stage compressor, vapour and liquid separator's liquid outlet links to each other with the working medium entry of evaporimeter through first expansion valve, the flash tank passes through hot water circulating pump and vapour and gas and liquid separator's entry links to each otherThe body coolers are connected. The heat pump system disclosed in this patent reduces CO at the inlet of the second stage compressor₂Temperature and increasing CO at the inlet of the second stage compressor by means of an ejector₂Pressure and thereby increase the operational reliability of the heat pump system.

Furthermore, the Chinese patent application No. 202010741387.1 entitled "a Multi-pressure stage air supplement type high temperature Heat Pump steam System" discloses a Multi-pressure stage air supplement type high temperature Heat Pump steam System, the high-temperature heat pump steam system consists of a heat supply source module, a high-temperature heat pump circulating module and an evaporation module, the heat supply source module, the high-temperature heat pump circulation module and the evaporation module consist of a heat source inlet, a heat source throttle valve, an evaporator, a heat source outlet, a gas supplementing compressor, a main compressor, a condenser, a subcooler, a heat return control valve group, a first heat regenerator, a primary expansion valve, a first flash evaporator, a second heat regenerator, a secondary expansion valve, an evaporation system expansion valve, a second flash evaporator, a steam outlet, a first throttle valve, a confluence tee joint, a second throttle valve, a make-up water inlet and a water pump, the evaporator, the condenser, the subcooler, the first regenerator and the second regenerator all comprise a hot end and a cold end. The main body compressor of the patent document includes a low stage compressor, a mixing chamber, and a high stage compressor which are connected to each other, so that high temperature and high pressure steam can be prepared under a multi-stage pressure and a liquid hammering phenomenon in the main body compressor can be reduced.

However, the technology for preparing high-temperature and high-pressure steam by a heat pump system disclosed in the prior art still has the defects of single heat source, strong dependence on the environment, instability, poor performance or limited system working mode and the like.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a high-temperature steam supply system of a multi-heat-source heat pump. 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, and by combining solar energy and the heat pump heating system, solar energy, heat energy in air, waste heat, and clean renewable energy can be fully utilized, thereby improving the performance of the whole heat pump system.

In a preferred embodiment, the multi-heat-source heat pump high-temperature steam supply system described herein may further include an electric heat storage auxiliary system, which may store a large amount of high-temperature heat during off-peak electricity, not only may ensure the high-temperature and high-pressure steam supply of the system when solar energy is insufficient, but also may provide steam with higher temperature and pressure for the steam compression system, thereby further increasing the exhaust temperature and pressure of the steam compression system. The operation reliability of the whole multi-heat-source heat pump high-temperature steam supply system is improved, and the temperature and pressure range of the steam which can be supplied by the whole multi-heat-source heat pump high-temperature steam supply system is remarkably enlarged. The multi-heat-source heat pump high-temperature steam supply system is characterized in that a heat source is comprehensively used by various heat sources, various loops can be selectively used on a system loop, and high-temperature and high-pressure steam is supplied in different modes under the assistance of electric heat storage.

The present application also aims to provide a method for operating a multi-heat-source heat pump high-temperature steam supply system as described above.

In a first aspect, the present application provides a multi-heat source heat pump high temperature steam supply system, which is characterized by comprising a heat pump heating system, a solar auxiliary flash evaporation system and a steam compression system, and pipes and valves required for realizing and controlling 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, the heat pump evaporator is used for evaporating a heat pump working medium in the heat pump heating system into low-temperature low-pressure steam, the heat preservation water tank is used for supplying water to the heat pump heating system, and a spiral heating pipe used for conveying high-temperature high-pressure steam is arranged in the heat preservation water tank;

the solar auxiliary flash system comprises the heat preservation water tank, a first circulating water pump, a solar thermal collector, a flash tank and a second circulating water pump, wherein the heat preservation water tank, the first circulating water pump and the solar thermal collector are sequentially connected to form a fluid flow loop, the heat preservation water tank, the first circulating water pump, the flash tank and the second circulating water pump form a fluid flow loop flowing in one direction from the heat preservation water tank to the flash tank, the heat preservation 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 flowing in one direction from the heat preservation water tank to the flash tank, the flash tank comprises a drain pipe for draining water from the flash tank, and a flash outlet pipe for conveying fluid from the flash tank to the first steam storage tank, the flash evaporation gas outlet pipe is introduced below the liquid level of the first gas storage tank;

wherein the vapor compression system comprises the flash tank, a first vapor storage tank, a vapor compressor, a fourth water circulation pump, a fifth water circulation pump, and a water injection pump, the flash tank, the first vapor storage tank, and the vapor compressor form a unidirectional fluid flow path from the flash tank to the vapor compressor, the flash tank, the fourth water circulation pump, the first vapor storage tank, and the fifth water circulation pump form a fluid flow loop, and the water injection pump is used for injecting water working medium into the vapor compressor.

In one embodiment of the first aspect, the multi-heat-source heat pump high-temperature steam supply system further comprises an electric heat storage auxiliary system, and the electric heat storage auxiliary system comprises the heat preservation water tank, a third water circulation pump and a high-temperature electric heat storage tank;

the vapor compression system further comprises a second vapor storage tank and an ejector pump;

wherein, holding water tank third circulating water pump high temperature electricity heat storage case second steam storage tank fifth circulating water pump the flash tank and second circulating water pump forms the fluid flow return circuit, high temperature electricity heat storage case second steam storage tank and vapor compressor forms follow high temperature electricity heat storage case arrives vapor compressor one-way flow's fluid flow return circuit, it is used for drawing the ejector pump to draw the low pressure vapor of flash tank just high temperature electricity heat storage case second steam storage tank the ejector first steam storage tank and vapor compressor forms and follows high temperature electricity heat storage case arrives vapor compressor one-way flow's ninth fluid flow return circuit, wherein be provided with the spiral evaporation pipe that is used for carrying high temperature high pressure vapor in the high temperature electricity heat storage case, and be used for following high temperature electricity heat storage case to the second steam storage tank heat storage case delivery fluid heat storage case outlet duct lets in The liquid level of the second steam storage tank is lower than the liquid level.

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

Compared with the prior art, the invention has the beneficial effects that:

1. the heat pump system is used for fully utilizing heat energy, waste heat energy and the like in the air to generate low-pressure steam, and meanwhile, the solar heat collector is used for collecting solar energy, so that clean renewable energy is fully utilized, the flash evaporation temperature is further increased, and the system performance is effectively improved.

2. The high-temperature and high-pressure steam is generated by compressing, boosting and heating the steam by using the steam compressor, so that the low-grade waste heat is effectively recycled and utilized.

3. The high-temperature electric heat storage box in the electric heat storage auxiliary system stores low-cost clean electric energy when urban off-peak electricity, and high-temperature heat storage media in the high-temperature electric heat storage box directly heat water working media to form high-temperature high-pressure steam during operation.

4. Through the use of the electric heat storage auxiliary system, the system can still be normally used in severe weather such as insufficient heat source or insufficient solar energy, and the stability and the application range of the system are improved.

5. Through the use of the electric heat storage auxiliary system, the source of the vapor at the air suction end of the vapor compressor is richer, the vapor can be low-pressure vapor obtained by direct flash evaporation, the vapor can be high-temperature high-pressure vapor to inject and flash the medium-pressure vapor generated by the low-pressure vapor, the vapor can also be high-temperature high-pressure vapor generated by the electric heat storage auxiliary system, the temperature and the pressure range of the vapor which can be supplied by the whole system are greatly improved, and even the vapor can be provided with the high-temperature high-pressure vapor with the temperature of more than or equal to 200 ℃ and the pressure of more than or equal to 15 atmospheres.

Drawings

Fig. 1 is a schematic view of a multi-heat-source heat pump high-temperature steam supply system according to an embodiment of the present invention.

In the above drawings, the reference numerals have the following meanings:

11-a water tank water supply pipe, 12-a water tank water supply valve, 13-a heat preservation water tank, 131-a spiral heating pipe, 14-a first stop valve, 15-a first circulating water pump, 16-a water tank first water outlet pipe, 17-a second stop valve, 18-a solar heat collector, 19-a water tank first water return pipe, 20-a third stop valve, 21-a water tank water outlet bypass pipe, 22-a fourth stop valve, 23-a flash tank water inlet pipe, 24-a fifth stop valve, 25-a first one-way valve, 26-a flash evaporation valve, 27-a sixth stop valve, 28-a water tank second water return pipe, 29-a second circulating water pump, 31-a heat pump condensation pipe, 32-a heat pump expansion valve, 33-a heat pump expansion pipe, 34-a heat pump heat source outlet pipe and 35-a heat pump evaporator, 36-heat pump heat source inlet pipe, 37-heat pump compressor, 38-heat pump exhaust pipe, 39-heat pump air suction pipe, 41-flash tank, 411-dispersion flash pipe, 42-seventh stop valve, 43-flash steam outlet pipe, 44-first steam storage tank, 45-eighth stop valve, 46-second one-way valve, 47-steam compressor air suction pipe, 48-steam compressor, 49-steam compressor exhaust pipe, 51-water tank second water 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 air outlet pipe, 57-fourth one-way valve, 58-second steam storage tank, 59-fifth one-way valve, 60-ejector pump, 61-a tenth stop valve, 62-an injection pipe, 63-a power pipe, 64-a sixteenth stop valve, 65-a second steam storage tank first air outlet pipe, 66-a sixth one-way valve, 67-a second steam storage tank second air outlet pipe, 71-a fourth circulating water pump, 72-a second steam storage tank water inlet pipe, 73-an eleventh stop valve, 74-a twelfth stop valve, 75-a first steam storage tank water inlet pipe, 76-a thirteenth stop valve, 77-a second steam storage tank water outlet pipe, 78-a fourteenth stop valve, 79-a first steam storage tank water outlet pipe, 80-a fifth circulating water pump, 81-a fifteenth stop valve, 82-a water outlet pipe, 91-a water spray regulating valve, 92-a water spray pump and 93-a water spray pipe.

Detailed Description

Unless otherwise defined, technical or scientific terms used herein in the specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

In the following detailed description of the embodiments of the present invention, reference is made to the accompanying drawings, where it is noted that in the interest of brevity and conciseness, not all features of an actual embodiment may be described in detail in this specification. Modifications and substitutions to the embodiments of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, and the resulting embodiments are within the scope of the present invention.

Example 1

The 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 comprises a heat pump heating system, a solar auxiliary flash evaporation system and a steam compression system. In this embodiment, heat pump heating system and the supplementary flash system of solar energy pass through holding water box 13 and link to each other, have spiral heating pipe 131 among the holding water box 13, spiral heating pipe 131 can realize the even heating of holding water box water-logging effectively, and the supplementary flash system of solar energy and vapor compression system pass through flash tank 41 and link to each other, has dispersion flash tube 411 in the flash tank 41, and dispersion flash tube 411 can realize the dispersion flash distillation of high-temperature water effectively, guarantees the high-efficient output of steam.

Referring to fig. 1, in one embodiment, the heat pump heating system according to the present embodiment may include a holding water tank 13, a spiral heating pipe 131, a heat pump condenser pipe 31, a heat pump expansion valve 32, a heat pump expansion pipe 33, a heat pump heat source outlet pipe 34, a heat pump evaporator 35, a heat pump heat source inlet pipe 36, a heat pump compressor 37, a heat pump exhaust pipe 38, and a heat pump suction pipe 39. The heat source may enter the heat pump evaporator 35 through a heat pump heat source inlet pipe 36 and exit the heat pump evaporator 25 through a heat pump heat source outlet pipe 36. The heat source is used to evaporate the heat pump working medium in the heat pump evaporator 35 into low pressure steam. In one embodiment, the heat source may be in the form of an air heat source, an underground water heat source, a waste heat water heat source, or the like.

In one embodiment, the heat pump intake pipe 39, the heat pump compressor 37, the heat pump exhaust pipe 38, the spiral heating pipe 131, the heat pump condenser pipe 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 circuit. In one embodiment, the spiral heating pipe 131 is disposed in the thermal insulation water tank 13 and below the liquid level of the thermal insulation water tank 13. In one embodiment, the spiral heat pipe 131 includes a spiral heat pipe inlet and a spiral heat pipe outlet, the spiral heat pipe inlet being in fluid communication with the heat pump steam pipe 38, and the spiral heat pipe outlet being in fluid communication with the heat pump condenser pipe. In a specific embodiment, the spiral heating pipe 131 is in a spiral ascending trend, the water working medium at the bottom of the heat preservation water tank 13 is heated first, then the water working medium at the upper part of the heat preservation water tank 13 is heated step by step, and the water working medium in the heat preservation water tank 13 can be uniformly heated through the spiral ascending structure of the spiral heating pipe 131.

Still referring to fig. 1, the solar auxiliary flash evaporation system of the present embodiment may include a water tank water supply pipe 11, a water tank water supply valve 12, a heat preservation water tank 13, a first stop valve 14, a first circulation water pump 15, a first water tank water outlet pipe 16, a second stop valve 17, a solar heat collector 18, a first water tank return pipe 19, a third stop valve 20, a water tank water outlet bypass pipe 21, a fourth stop valve 22, a flash tank water 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 circulation water pump 29, a flash tank 41, and a distribution flash evaporation pipe 411. In one embodiment, a dispersion flash pipe 411 is provided in the flash tank 41.

In one embodiment, the hot 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 heat collector 18, the first water return pipe 19 of the water tank, and the third stop valve 20 are connected in sequence to form a fluid flow loop. The fluid flow circuit is used for further heating the water medium in the holding tank 13 by means of solar energy.

In this embodiment, the solar-assisted flash system also includes another fluid flow circuit. The heat preservation 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 thermal collector 18, the flash tank inlet pipe 23, the fifth stop valve 24, the first one-way 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 flowing along a clockwise one-way direction. The fluid flow circuit is the primary working circuit of the solar-assisted flash system. Specifically, the water working medium in the heat-preservation water tank 13 is heated by solar energy and then is input into the flash tank 41 for first gas-liquid separation, part of the water working medium is flashed into liquid low-pressure gas, the liquid low-pressure gas is further compressed by the water vapor compressor 48 and then is available for users, and the rest part of the water working medium is condensed into liquid and is gathered at the bottom of the flash tank 41, and can flow back to the heat-preservation 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 circuit further increases the temperature of the hydraulic fluid flowing into the flash tank 41, thereby increasing the pressure and temperature of the steam generated by the flash, and increasing the efficiency of the overall system.

Furthermore, in this embodiment, the solar assisted flash system also includes a bypass fluid flow loop to regulate the temperature of the aqueous working fluid entering the flash tank 41. Specifically, one end of the tank outlet bypass pipe 21 is connected to the first tank outlet pipe 16 and is disposed 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 with the flash tank inlet pipe 23 and is arranged between the fifth stop valve 26 and the first one-way valve 25, and the water tank outlet bypass pipe 21 is provided with the fourth stop valve 22.

Next, still referring to fig. 1, the vapor compression system according to the present embodiment includes a flash tank 41, a seventh stop valve 42, a flash gas outlet pipe 43, a first vapor storage tank 44, an eighth stop valve 45, a second check valve 46, a vapor compressor suction pipe 47, a vapor compressor 48, a vapor compressor discharge pipe 49, a fourth circulation water pump 71, a twelfth stop valve 74, a first vapor storage tank water inlet pipe 75, a thirteenth stop valve 76, a first vapor storage tank water outlet pipe 77, a fifth circulation water pump 80, a fifteenth stop valve 81, a flash tank water discharge pipe 82, a water spray regulating valve 91, a water spray pump 92, and a water spray pipe 93. In this embodiment, a flash tank 41, a seventh stop valve 42, a flash gas outlet pipe 43, a first vapor storage tank 44, an eighth stop valve 45, a second check valve 46, a vapor compressor suction pipe 47, a vapor compressor 48, and a vapor compressor discharge pipe 49 are connected in this order to form a fluid flow path from the flash tank 41 to the vapor compressor 48. This is the main fluid flow loop of the vapor compression system, and the low-pressure gas flashed by the flash tank 41 is sent to the first vapor storage tank 44 for the second gas-liquid separation, and the separated vapor is compressed by the vapor compressor 48 and supplied to the user. The separated liquid may then pass back to the flash tank 41.

In addition, in this embodiment, the flash tank 41, the fourth circulating water pump 71, the twelfth cut-off valve 74, the first steam storage tank inlet pipe 75, the first steam storage tank 44, the thirteenth cut-off valve 76, the first steam storage tank outlet pipe 79, and the fifth circulating water pump 80 are connected in this order to form a fluid flow circuit. 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 this order to form a unidirectional fluid flow path. In this embodiment, the flash tank 41, the fifteenth shutoff valve 81, and the flash tank drain pipe 82 are connected in this order to form a unidirectional fluid flow path.

In one embodiment, through these fluid paths, the water mass within the flash tank 41 may be fed into the first vapor storage tank 44 through the fourth circulating water pump 71 and the first vapor storage tank inlet pipe 75 to make up for the water mass lost to evaporation within the first vapor storage tank 44. In another embodiment, the water medium in the first steam storage tank 44 may also be fed into the flash tank 41 through the first steam storage tank water outlet pipe 79 and the fifth circulating water pump 80, so as to reduce the water medium added in the first steam storage tank 44 due to the liquid carried by the steam, thereby ensuring the balance of the water medium in the first steam storage tank 44. In another embodiment, the water media within the flash tank 41 may be drained from the system through a drain 82 and a fifteenth shut-off valve 81.

Next, the operation method of the multi-heat-source heat pump high-temperature steam supply system according to the present embodiment will be described. In one embodiment, when the solar energy is insufficient, the operation method of the multiple heat source heat pump high temperature steam supply system is as follows.

Firstly, a heat pump heating system starts to work, a heat source flows into a heat pump evaporator from a heat pump heat source inlet pipe to heat a heat pump working medium in the heat pump evaporator, the heat pump working medium flows out from a heat pump heat source outlet pipe after being cooled, low-temperature and low-pressure steam generated after heat absorption and evaporation of the heat pump working medium is sucked and compressed by a heat pump compressor through a heat pump air suction pipe, generated high-temperature and high-pressure steam flows into a spiral heating pipe in a heat preservation water tank through a heat pump air exhaust pipe, the heat pump working medium flows into a heat pump expansion valve through a heat pump condensation pipe after being condensed in the spiral heating pipe, and flows back into the heat pump evaporator through a heat pump expansion pipe after being expanded in the heat pump expansion valve to form a cycle.

Secondly, when the water working medium in the heat preservation water tank is heated to be above 80 ℃, the solar auxiliary flash system starts to work, the first stop valve is opened, the fourth stop valve and the sixth stop valve are opened, the high-temperature water working medium is sent into the flash tank through the first one-way valve and the flash valve by the first circulating water pump through the first water tank outlet pipe, the water tank outlet bypass pipe and the flash tank inlet pipe, the high-temperature water working medium is evenly dispersed and flashed through the dispersion flash pipe in the flash tank to generate low-pressure steam and low-temperature saturated water, the low-temperature saturated water is sent back to the heat preservation water tank through the second circulating water pump through the second water return pipe of the water tank, meanwhile, the water tank water supplementing valve is opened, and the external purified water working medium is supplemented into the heat preservation water tank through the water tank water supplementing pipe. The dispersion flash tube homodisperse is in the flash tank for evenly arranged the dispersion flash tube on the flash tank flash evaporation plane, the high temperature water work piece that realizes flowing into the flash tank can evenly distributed the flash.

Finally, the steam compression system starts to work, the seventh stop valve, the eighth stop valve, the twelfth stop valve, the thirteenth stop valve and the water spray regulating valve are opened, low-pressure steam generated in the flash tank flows into the first steam storage tank through the flash steam outlet pipe and is introduced below the liquid level in the first steam storage tank, the low-pressure steam in the first steam storage tank flows through the second one-way valve through the steam compressor air suction pipe and is sucked and compressed by the steam compressor to generate high-temperature high-pressure steam, external pure water is sprayed into the steam compressor through the water spray pump and the water spray pipe in the compression process, finally the high-temperature high-pressure steam is sent to a user through the steam compressor exhaust pipe, meanwhile, water quality in the flash tank is sent into the first steam storage tank through the fourth circulating water pump and the first steam storage tank water inlet pipe to make up the water quality lost due to evaporation in the first steam storage tank, and the water quality in the first steam storage tank can also be sent into the flash steam storage tank through the first steam storage tank water outlet pipe and the fifth circulating water pump Reduce the water matter that increases because water vapour takes liquid in the first vapor storage jar in the steaming tank, the water matter in the flash tank passes through drain pipe and fifteenth stop valve discharge system.

In another embodiment, the multi-heat source heat pump high temperature steam supply system operates as follows when solar energy is sufficient.

Secondly, when the water working medium in the heat preservation water tank is heated to be above 80 ℃, the solar auxiliary flash 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, the high-temperature water working medium is sent into the solar heat collector by the first circulating water pump through the first water outlet pipe of the water tank to absorb solar energy, then is sent into the flash tank through the first check valve and the flash valve by flowing through the first return water pipe of the water tank and the water inlet pipe of the flash tank, the high-temperature water working medium in the flash tank is uniformly dispersed and flashed through the dispersion flash pipe to generate low-pressure steam and low-temperature saturated water, the low-temperature saturated water is sent back into the heat preservation water tank by the second circulating water pump through the second return water pipe of the water tank, and meanwhile, the water tank water replenishing valve is opened, and external purified water working medium is replenished into the heat preservation water tank through the water replenishing pipe of the water tank.

In one embodiment, the low pressure steam generated in the flash tank 41 flows into the first steam storage tank 44 through the flash exit pipe 43 and passes below the liquid level in the first steam storage tank 44. On the one hand, the low-pressure steam can transfer the existing superheat to the liquid in the first steam storage tank 44 to further reduce the possible superheat degree of the low-pressure steam, on the other hand, the low-pressure steam can realize gas-liquid separation through the first steam storage tank 44, and the low-pressure steam in the first steam storage tank 44 passes through the suction pipe 47 of the steam compressor and flows through the second check valve 46 to be sucked and compressed by the steam compressor 48 to generate high-temperature high-pressure steam. In 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 overheat generated in the compression process, so that the safe operation of the system is ensured, and finally, the high-temperature and high-pressure water vapor is sent to a user through the exhaust pipe 49 of the water vapor compressor.

Example 2

The embodiment provides a multi-heat-source heat pump high-temperature steam supply system which comprises a heat pump heating system, a solar auxiliary flash evaporation system, an electric heat storage auxiliary system and a steam compression system.

The heat pump heating system and the solar-assisted flash system of this example are the same as those of example 1.

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

Still referring to fig. 1, the steam compression system according to the embodiment includes a flash tank 41, a seventh stop valve 42, a flash steam outlet pipe 43, a first steam storage tank 44, an eighth stop valve 45, a second check valve 46, a steam compressor air suction pipe 47, a steam compressor 48, a steam compressor exhaust pipe 49, a second steam storage tank 58, a second steam storage tank second air outlet pipe 67, a fifth check valve 59, an ejector pump 60, a tenth stop valve 61, an ejector pipe 62, a power pipe 63, a fourth water circulation 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 79, a fifth water circulation pump 80, a fifteenth stop valve 81, a flash tank water discharge pipe 82, a water spray regulating valve 91, a water spray pump 92, and a water outlet pipe 93. The flash tank 41, the seventh stop valve 42, the flash gas outlet pipe 43, the first gas 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 discharge 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 cut-off valve 74, the first steam storage tank inlet pipe 75, the first steam storage tank 44, the thirteenth cut-off 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 this order to form a one-way fluid flow path. The flash tank 41, the fifteenth shutoff valve 81, and the flash tank drain pipe 82 are connected in sequence to form a unidirectional fluid flow path. The second vapor storage tank 58, the sixteenth stop valve 64, the second vapor storage tank second outlet pipe 67, the sixth one-way valve 66, the vapor compressor suction pipe 47 and the vapor compressor 48 are connected in sequence to form a one-way fluid flow path from the second vapor storage tank 58 to the vapor compressor 48. The second steam storage tank 58, the second steam storage tank second air outlet pipe 67, the fifth one-way valve 59, the ejector pump 60, the power pipe 63, the flash tank 41, the eighth stop valve 45, the second one-way valve 46, the steam compressor air suction pipe 47 and the steam compressor 48 are sequentially connected to form a one-way fluid flow path from the second steam storage tank 58 to the steam compressor 48, the flash tank 41 is connected with the ejector pump 60 through an ejector pipe 62, and the ejector pipe 62 is provided with a tenth stop valve 61.

Next, the operation method of the multi-heat-source heat pump high-temperature steam supply system of the present embodiment will be described in detail. The working method of the heat pump heating system and the solar auxiliary flash evaporation system is the same as that of the embodiment 1, and the working method is not repeated.

When the heat source is insufficient or the solar energy is insufficient, the electric heat storage auxiliary system of the embodiment can start to work, so that the stable operation of the multi-heat-source heat pump high-temperature steam supply system is ensured.

In one embodiment, the operation method of the electric heat storage auxiliary system according to the embodiment is as follows. The high-temperature electric heat storage box is internally stored with high-temperature heat storage medium, the ninth stop valve is opened when the electric heat storage auxiliary system works, the water medium in the heat-preservation water tank is sent into the spiral evaporation pipe in the high-temperature electric heat storage box through a third one-way valve by passing through a second water outlet pipe of the water tank and a third circulating water pump, the water medium is heated and vaporized by the high-temperature heat storage medium in the high-temperature electric heat storage box in the spiral evaporation pipe to generate high-temperature high-pressure steam with the temperature exceeding 100 ℃ and the pressure exceeding 1 standard atmospheric pressure, the high-temperature high-pressure steam flows through a fourth one-way valve by an air outlet pipe of the heat storage box to enter the liquid level of the second steam storage tank, the seventh stop valve is closed, the fifth one-way valve and the tenth stop valve are opened, the high-temperature high-pressure steam in the second steam storage tank flows into the ejector pump by a second air outlet pipe of the second steam storage tank to eject the low-pressure steam in the flash tank, so that the low-pressure steam in the flash tank is ejected into the ejector pump by the ejector pipe to be ejected into the ejector pump to be pressurized, the generated medium-pressure water vapor flows into a first steam storage tank through a power pipe and a flash evaporation gas outlet pipe, the medium-pressure water vapor in the first steam storage tank flows through a second one-way valve through a gas suction pipe of a water vapor compressor and is sucked and compressed by the water vapor compressor to generate high-temperature high-pressure water vapor, an external pure water working medium is sprayed into the water vapor compressor through a water spray pump and a water spray pipe in the compression process, finally the high-temperature high-pressure water vapor is sent to a user through a gas exhaust pipe of the water vapor compressor, an eleventh stop valve and a fourteenth stop valve are opened simultaneously, and the water working medium in the flash tank is sent into a second steam storage tank through a fourth circulating water pump and a water inlet pipe of the second steam storage tank to compensate the water working medium lost due to the absorption of the overheating and evaporation of the high-temperature high-pressure water vapor in the second steam storage tank;

in another embodiment, the operation method of the electric heat storage auxiliary system according to the embodiment is as follows. High-temperature heat storage medium is stored in the high-temperature electric heat storage box, when the electric heat storage auxiliary system works, the ninth stop valve is opened, water working medium in the heat preservation water tank is sent into the spiral evaporation pipe in the high-temperature electric heat storage box through the third one-way valve by passing through the second water outlet pipe of the water tank and the third circulating water pump, the water working medium is heated and vaporized by the high-temperature heat storage medium in the high-temperature electric heat storage box in the spiral evaporation pipe to generate high-temperature high-pressure water vapor with the temperature exceeding 100 ℃ and the pressure exceeding 1 standard atmospheric pressure, the high-temperature high-pressure water vapor flows through the fourth one-way valve by the air outlet pipe of the heat storage box to enter the liquid level of the second steam storage tank by passing through the sixth one-way valve by the air outlet pipe of the second steam storage tank and the air suction pipe of the steam compressor to be sucked and compressed by the steam compressor to generate steam with higher temperature pressure, and finally, the water vapor with higher temperature and pressure is sent to a user through a water vapor compressor exhaust pipe, the eleventh stop valve and the fourteenth stop valve are opened simultaneously, 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 water inlet pipe to make up the water working medium lost due to the absorption of the high-temperature and high-pressure water vapor in the second steam storage tank through overheating evaporation.

In one 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 electricity, and the temperature can exceed 400 ℃. In one embodiment, the water vapor output by the water vapor compressor 48 may have a temperature greater than or equal to 200 ℃ and a pressure greater than or equal to 15 atmospheres.

The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.

Claims

1. A multi-heat-source heat pump high-temperature steam supply system is characterized by comprising a heat pump heating system, a solar auxiliary flash evaporation system, a steam compression system, a pipeline and a valve, wherein the pipeline and the valve are required for realizing and controlling fluid flow;

the solar auxiliary flash system comprises the heat-preservation water tank, a first circulating water pump, a solar heat collector, a flash tank and a second circulating water pump, the heat-preservation water tank, the first circulating water pump and the solar heat collector are sequentially connected to form a fluid flow loop, the holding water tank, the first circulating water pump, the flash tank and the second circulating water pump form a fluid flow loop with one-way flow from the holding water tank to the flash tank, the holding 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 which flows in one direction from the holding water tank to the flash tank, wherein the flash tank comprises a drain pipe for draining water from the flash tank, and a flash steam outlet pipe for conveying fluid from the flash tank to the first steam storage tank is communicated below the liquid level of the first steam storage tank;

wherein the vapor compression system comprises the flash tank, a first vapor storage tank, a vapor compressor, a fourth water circulation pump, a fifth water circulation pump, and a water injection pump, the flash tank, the first vapor storage tank, and the vapor compressor forming a unidirectional fluid flow path from the flash tank to the vapor compressor, the flash tank, the fourth water circulation pump, the first vapor storage tank, and the fifth water circulation pump forming a fifth fluid flow loop, the water injection pump for injecting a water working substance to the vapor compressor.

2. The multi-heat-source heat pump high-temperature steam supply system of claim 1, further comprising an electric heat storage auxiliary system, wherein the electric heat storage auxiliary system comprises the heat-preservation water tank, a third circulating water pump and a high-temperature electric heat storage tank;

3. The multi-heat-source heat pump high-temperature steam supply system according to claim 2, wherein the spiral evaporation pipe spirals in the high-temperature electric heat storage tank to the highest position of the high-temperature electric heat storage tank, then returns to the lowest position of the high-temperature electric heat storage tank, and returns to the highest position of the high-temperature electric heat storage tank after being divided into a plurality of fluid flow loops at the lowest position of the high-temperature electric heat storage tank, and finally joins and connects with the air outlet pipe of the heat storage tank.

4. A multi-heat-source heat pump high-temperature steam supply system according to any one of claims 1-3, wherein the flash tank includes a dispersion flash pipe, the dispersion flash pipe being evenly distributed within the flash tank.

5. The multi-heat-source heat-pump high-temperature vapor supply system of claim 1, wherein the multi-heat-source heat-pump high-temperature vapor supply system comprises a heat-pump heating system, a solar-assisted flash evaporation system, and a vapor compression system;

the heat pump heating system comprises a heat-preservation water tank, a spiral heating pipe, a heat pump condenser pipe, 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 air suction pipe, wherein a 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 solar auxiliary flash system comprises a water tank water supplementing pipe, a water tank water supplementing valve, a heat preservation water tank, a first stop valve, a first circulating water pump, a first water outlet pipe of the water tank, a second stop valve, a solar thermal collector, a first water return pipe of the water tank, a third stop valve, a water tank water outlet bypass pipe, a fourth stop valve, a flash tank water inlet pipe, a fifth stop valve, a first check valve, a flash valve, a sixth stop valve, a second water return pipe of the water tank, a second circulating water pump, a flash tank and a disperse flash pipe, wherein the disperse flash pipe is arranged in the flash tank, 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 thermal collector, the first water return pipe of the water tank and the third stop valve are sequentially connected to form a fluid flow loop, and the heat preservation water tank, the first stop valve, the water tank water supplementing valve, the heat preservation water tank water supplementing valve and the third stop valve are sequentially connected to form a fluid flow loop, The first circulating water pump, the first water outlet pipe of the water tank, the second stop valve, the solar thermal collector, the water inlet pipe of the flash tank, the fifth stop valve, the first one-way valve, 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, one end of the water outlet bypass pipe of the water tank is connected with the first water outlet pipe of the water tank and is arranged between the first circulating water pump and the second stop valve, the other end of the water outlet bypass pipe of the water tank is connected with the water inlet pipe of the flash tank and is arranged between the fifth stop valve and the first one-way valve, and the water outlet bypass pipe of the water tank is provided with a fourth stop valve;

the steam compression system comprises a flash tank, a seventh stop valve, a flash gas outlet pipe, a first steam storage tank, an eighth stop valve, a second check valve, a steam compressor gas suction pipe, a steam 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 water discharge pipe, a water spray regulating valve, a water spray pump and a water spray pipe, wherein the flash tank, the seventh stop valve, the flash gas outlet pipe, the first steam storage tank, the eighth stop valve, the second check valve, the steam compressor gas suction pipe, the steam compressor and the steam compressor exhaust pipe are sequentially connected to form a fluid flow path from the flash tank to the steam compressor, and the flash tank, the steam compressor, the flash tank, the steam outlet pipe, the first steam storage tank, the eighth stop valve and the water spray pipe are sequentially connected to form a fluid flow path from the flash tank to the steam compressor, 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 sequentially connected 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 sequentially connected to form a one-way fluid flow path, and the flash tank, the fifteenth stop valve and the flash tank water discharge pipe are sequentially connected to form a one-way fluid flow path.

6. The multi-heat-source heat-pump high-temperature vapor supply system according to claim 2, wherein the multi-heat-source heat-pump high-temperature vapor supply system comprises a heat pump heating system, a solar-assisted flash evaporation system, an electric heat storage auxiliary system and a vapor compression system;

the electric heat storage auxiliary system comprises a heat preservation water tank, a water tank second outlet pipe, a ninth stop valve, a third circulating water pump, a third one-way valve, a high-temperature electric heat storage tank, a spiral evaporation pipe, a heat storage tank outlet pipe, a fourth one-way valve, a second steam storage tank, a sixteenth stop valve, a second steam storage tank first outlet pipe, a sixth one-way valve, a second steam storage tank second outlet pipe, a fourteenth stop valve and a second steam storage tank outlet pipe, wherein the spiral evaporation pipe used for conveying high-temperature high-pressure steam is arranged in the high-temperature electric heat storage tank, the heat preservation water tank, the water tank second outlet pipe, the ninth stop valve, the third circulating water pump, the third one-way valve, the spiral evaporation pipe, the heat storage tank outlet pipe, the fourth one-way valve, the second steam storage tank, the fourteenth stop valve, the second steam storage tank outlet pipe, the fifth circulating water pump, The flash tank, the sixth stop valve, the water tank second water return pipe and the second circulating pump are sequentially connected to form a fluid flow loop;

the steam compression system comprises a flash tank, a seventh stop valve, a flash gas outlet pipe, a first steam storage tank, an eighth stop valve, a second check valve, a steam compressor gas suction pipe, a steam compressor exhaust pipe, a second steam storage tank, a fifth check valve, an injection pump, a tenth stop valve, an injection 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, a flash tank water drain pipe, a water spray regulating valve, a water spray pump and a water spray pipe, wherein the flash tank, the seventh stop valve, the flash gas outlet pipe, the first steam storage tank, the eighth stop valve, the second check valve, the steam compressor gas suction pipe, the steam compressor and the steam compressor exhaust pipe are sequentially connected to form a steam pressure from the flash tank to the steam compressor A fluid flow path of a compressor, wherein 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 sequentially connected to form a fluid flow loop, the water spray pipe, the water spray pump, the water spray regulating valve and the steam compressor are sequentially connected to form a one-way fluid flow path, the flash tank, the fifteenth stop valve and the flash tank water outlet pipe are sequentially connected 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 steam compressor air suction pipe and the steam compressor are sequentially connected to form a one-way fluid flow path from the second steam storage tank to the steam compressor, the second steam storage tank, the second steam storage tank second outlet duct, the fifth one-way valve, the ejector pump, the power pipe, the flash tank, the eighth stop valve, the second one-way valve, the steam compressor air suction pipe and the steam compressor are sequentially connected to form a one-way fluid flow path from the second steam storage tank to the steam compressor, the flash tank is connected with the ejector pump through an ejector pipe, and a tenth stop valve is arranged on the ejector pipe.

7. The operating method of a multi-heat-source heat pump high-temperature steam supply system according to claim 5, wherein when solar energy is insufficient, the operating method of the multi-heat-source heat pump high-temperature steam supply system is as follows:

firstly, a heat pump heating system starts to work, a heat source flows into a heat pump evaporator from a heat source inlet pipe of the heat pump to heat a heat pump working medium in the heat pump evaporator, the heat pump working medium flows out from a heat source outlet pipe of the heat pump after being cooled, low-temperature and low-pressure steam generated after heat absorption and evaporation of the heat pump working medium is sucked and compressed by a heat pump compressor through a heat pump air suction pipe, generated high-temperature and high-pressure steam flows into a spiral heating pipe in a heat preservation water tank through a heat pump air exhaust pipe, the heat pump working medium is condensed in the spiral heating pipe and then flows into a heat pump expansion valve through a heat pump condensation pipe, and the heat pump working medium is expanded in the heat pump expansion valve and then flows back into the heat pump evaporator through a heat pump expansion pipe to form a cycle;

secondly, when the water working medium in the heat preservation water tank is heated to be above 80 ℃, the solar auxiliary flash system starts to work, the first stop valve, the fourth stop valve and the sixth stop valve are opened, the high-temperature water working medium is sent into the flash tank through the first one-way valve and the flash valve by the first circulating water pump through the first water tank outlet pipe, the water tank outlet bypass pipe and the flash tank inlet pipe, the high-temperature water working medium is uniformly dispersed and flashed through the dispersion flash pipe in the flash tank to generate low-pressure steam and low-temperature saturated water, the low-temperature saturated water is sent back to the heat preservation water tank through the second circulating water pump through the second water return pipe of the water tank, the water tank water supplementing valve is opened, and the external purified water working medium is supplemented into the heat preservation water tank through the water tank water supplementing pipe;

finally, the steam compression system starts to work, the seventh stop valve, the eighth stop valve, the twelfth stop valve, the thirteenth stop valve and the water spray regulating valve are opened, low-pressure steam generated in the flash tank flows into the first steam storage tank through the flash steam outlet pipe and is introduced below the liquid level in the first steam storage tank, the low-pressure steam in the first steam storage tank flows through the second one-way valve through the steam compressor air suction pipe and is sucked and compressed by the steam compressor to generate high-temperature high-pressure steam, external pure water is sprayed into the steam compressor through the water spray pump and the water spray pipe in the compression process, finally the high-temperature high-pressure steam is sent to a user through the steam compressor exhaust pipe, meanwhile, water quality in the flash tank is sent into the first steam storage tank through the fourth circulating water pump and the first steam storage tank water inlet pipe to make up the water quality lost due to evaporation in the first steam storage tank, and the water quality in the first steam storage tank can also be sent into the flash steam storage tank through the first steam storage tank water outlet pipe and the fifth circulating water pump The steam tank reduces the water quality increased by the liquid carried by the water vapor in the first steam storage tank, and the water quality in the flash tank is discharged out of the system through a drain pipe and a fifteenth stop valve;

or when the solar energy is sufficient, the working method of the multi-heat-source heat pump high-temperature steam supply system is as follows:

secondly, when the water working medium in the heat preservation water tank is heated to be above 80 ℃, the solar auxiliary flash system starts to work, a second stop valve and a fifth stop valve are opened, a third stop valve and a fourth stop valve are closed, high-temperature water working medium is sent into the solar heat collector by a first circulating water pump through a first water tank outlet pipe to absorb solar energy, then flows through a first one-way valve and a flash evaporation valve through a first water return pipe of the water tank and a flash evaporation tank inlet pipe and is sent into the flash evaporation tank, the high-temperature water working medium in the flash evaporation tank is uniformly dispersed and flashed through a dispersion flash evaporation pipe to generate low-pressure steam and low-temperature saturated water, the low-temperature saturated water is sent back to the heat preservation water tank by a second circulating water pump through a second water return pipe of the water tank, and meanwhile, a water tank water replenishing valve is opened, and external purified water working medium is replenished into the heat preservation water tank through a water tank water replenishing pipe of the water tank;

8. The method of claim 7, wherein the steam output through the flash outlet is at a pressure of less than 1 atmosphere and at a temperature of less than 100 ℃;

the pressure of the steam output by the exhaust pipe of the steam compressor is more than 1 atmospheric pressure, the temperature exceeds 100 ℃, the pressure cannot exceed 15 atmospheric pressures at most, and the temperature cannot exceed 200 ℃.

9. The operating method of a multi-heat-source heat pump high-temperature steam supply system according to claim 6, wherein the operating method of the electric heat storage auxiliary system is as follows:

the high-temperature electric heat storage box is internally stored with high-temperature heat storage medium, the electric heat storage auxiliary system opens the ninth stop valve to be opened when working, water working medium in the heat-preservation water tank is sent into the spiral evaporation pipe in the high-temperature electric heat storage box through the third one-way valve by passing through the second water outlet pipe of the water tank and the third circulating water pump, the water working medium is heated and vaporized by the high-temperature heat storage medium in the high-temperature electric heat storage box in the spiral evaporation pipe to generate high-temperature high-pressure steam with the temperature exceeding 100 ℃ and the pressure exceeding 1 standard atmospheric pressure, the high-temperature high-pressure steam flows into the liquid level of the second steam storage tank by passing through the fourth one-way valve by the air outlet pipe of the heat storage box, the seventh stop valve is closed, the fifth one-way valve and the tenth stop valve are opened, the high-temperature high-pressure steam in the second steam storage tank flows into the ejector pump by passing through the second air outlet pipe of the second steam storage tank to eject the low-pressure steam in the flash tank, so that the low-pressure steam in the flash tank is ejected into the ejector pump by the ejector pipe to be ejected into the ejector pump to be pressurized, the generated medium-pressure water vapor flows into a first steam storage tank through a power pipe and a flash evaporation gas outlet pipe, the medium-pressure water vapor in the first steam storage tank flows through a second one-way valve through a gas suction pipe of a water vapor compressor and is sucked and compressed by the water vapor compressor to generate high-temperature high-pressure water vapor, an external pure water working medium is sprayed into the water vapor compressor through a water spray pump and a water spray pipe in the compression process, finally the high-temperature high-pressure water vapor is sent to a user through a gas exhaust pipe of the water vapor compressor, an eleventh stop valve and a fourteenth stop valve are opened simultaneously, and the water working medium in the flash tank is sent into a second steam storage tank through a fourth circulating water pump and a water inlet pipe of the second steam storage tank to compensate the water working medium lost due to the absorption of the overheating and evaporation of the high-temperature high-pressure water vapor in the second steam storage tank;

alternatively, the first and second electrodes may be,

the high-temperature electric heat storage box is internally stored with high-temperature heat storage medium, when the electric heat storage auxiliary system works, the ninth stop valve is opened, the water medium in the heat-preservation water tank is sent into the spiral evaporation pipe in the high-temperature electric heat storage box through the third one-way valve by passing through the second water outlet pipe of the water tank and the third circulating water pump, the water medium is heated and vaporized by the high-temperature heat storage medium in the high-temperature electric heat storage box in the spiral evaporation pipe to generate high-temperature high-pressure water vapor with the temperature exceeding 100 ℃ and the pressure exceeding 1 standard atmospheric pressure, the high-temperature high-pressure water vapor passes through the fourth one-way valve by the air outlet pipe of the heat storage box and enters the liquid level of the second steam storage tank by passing through the sixth one-way valve by the air outlet pipe of the second steam storage tank and the air suction pipe of the steam compressor to be sucked and compressed by the steam compressor, and finally the high-temperature high-pressure water vapor is sent to a user by the air outlet pipe of the steam compressor, and simultaneously, the eleventh stop valve and the fourteenth stop valve are opened, and the water working medium in the flash tank is sent into the second steam storage tank through the fourth circulating water pump and the water inlet pipe of the second steam storage tank to make up the water working medium lost due to the absorption of the high-temperature and high-pressure steam in the second steam storage tank through overheating evaporation.

10. The method of claim 9, wherein the pressure of the steam output through the first outlet pipe of the second steam storage tank exceeds 1 atmosphere and the temperature exceeds 100 ℃;

the pressure of the steam output by the exhaust pipe of the steam compressor can exceed 15 atmospheric pressures at most, and the temperature exceeds 200 ℃.