Integrated Energy System for High-Pressure Steam Supply Based on Wind Power Thermal Energy Storage and Solar Power Generation

Abstract

The present invention provides a comprehensive energy system for high-pressure steam supply based on wind power energy storage and solar power generation. The system includes a heat pump energy storage system, which generates a first high-temperature and high-pressure liquid working medium through first-stage heating and second-stage heating. The first-stage flash steam supply system is used to expand and generate electricity from the first high-temperature and high-pressure steam, and the first high-temperature and high-pressure steam is led out to the user end after being cooled and depressurized. The second-stage flash steam supply system leads the second high-temperature and high-pressure steam to the user end, and leads the first high-temperature and high-pressure steam after being heated and pressurized to the user end. The heat supply system is used to lead the third high-temperature and high-pressure liquid working medium to the user end. The power supply system stores electricity from solar power generation and wind power generation for use when needed. The system realizes secondary energy storage through the heat pump cycle device and electric heating of the heating device during the low valley period of urban electricity consumption at night. High-temperature and high-pressure steam is generated by means of flash evaporation and steam compression, avoiding the huge power consumption of directly using an electric boiler.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump energy saving, and particularly to a comprehensive energy system for high-pressure steam supply based on wind power energy storage and solar power generation. Background Art

[0002] Steam boilers can provide high-temperature and high-pressure steam, which are widely used in various technological processes of industry and daily life. Existing boilers are mainly fuel boilers such as coal-fired boilers and gas boilers, or electric boilers. Coal-fired boilers will produce a large amount of pollution during operation. Even cleaner gas boilers will emit a large amount of carbon dioxide during combustion. Moreover, gas boilers also face the problem of "gas shortage". Electric boilers can directly convert electric energy into heat energy for generating steam. Compared with fuel boilers, electric boilers not only have environmental protection, but also have more flexible adjustment capabilities. However, in terms of energy conversion efficiency, the electro-thermal conversion efficiency of electric boilers is less than 1, that is, one unit of electric energy can only be converted into less than one unit of heat energy, which will lead to huge power consumption, rising use costs, and a large impact on the load of the national power grid. If electric boilers are used on a large scale to produce steam, it will be necessary to upgrade the power grid, with huge investment costs.

[0003] Boilers adopting innovative energy-saving technologies such as heat pump steam systems can greatly improve the energy efficiency ratio. However, they are highly dependent on heat source conditions and the environment; the operation is unstable and the performance is poor; the system usage methods are limited; the operation power consumption is large and the operation cost is high during peak power; the price of energy storage material is expensive and the replacement cost is high, etc. Summary of the Invention

[0004] The purpose of the present invention is to provide a comprehensive energy system for high-pressure steam supply based on wind power energy storage and solar power generation. The system includes a heat pump energy storage system, a primary flash steam supply system, a secondary flash steam supply system, a return water system, a heat supply system, and a power supply system. During the low electricity consumption period of the city at night, primary heating is achieved through a heat pump circulation device, and secondary heating is achieved through a heating device to store heat energy. High-temperature and high-pressure steam is generated by means of flash evaporation and steam compression, avoiding the huge power consumption of directly using an electric boiler. The water working medium is cheap, with low usage cost, and has no corrosion to the water tank, effectively avoiding the high usage cost of molten salt energy storage. The demand for various high-temperature and high-pressure steam can be met by means of multi-stage flash evaporation and coupling with a steam compressor. High-temperature and high-pressure liquid water working medium is provided for users through the heat supply system. Electric energy is stored for other devices through the solar power supply system, the wind power supply system, and the primary flash evaporation system.

[0005] To achieve the purpose of the present invention, the following technical solutions are adopted:

[0006] According to one aspect of the present invention, there is provided an integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation includes a heat pump energy storage system, a first-stage flash steam supply system, a second-stage flash steam supply system, a return water system, a heat supply system, and a power supply system.

[0007] A heat pump energy storage system, which heats and pressurizes the introduced water working medium through a first-stage heating and a second-stage heating to generate a first high-temperature and high-pressure liquid water working medium.

[0008] A first-stage flash steam supply system, which is connected to the heat pump energy storage system and is used to depressurize and flash the first high-temperature and high-pressure liquid water working medium introduced from the heat pump energy storage system to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid water working medium, expand and generate electricity with the first high-temperature and high-pressure steam, or lead out the first high-temperature and high-pressure steam after cooling and depressurizing to the user end.

[0009] A second-stage flash steam supply system, which is connected to the first-stage flash steam supply system and is used to depressurize and flash the second high-temperature and high-pressure liquid water working medium introduced from the first-stage flash steam supply system to generate a second high-temperature and high-pressure steam and a third high-temperature and high-pressure liquid water working medium, lead out the second high-temperature and high-pressure steam to the user end, or lead out the first high-temperature and high-pressure steam after heating and pressurizing the second high-temperature and high-pressure steam to the user end; and

[0010] A return water system, which connects the first-stage flash steam supply system and the second-stage flash steam supply system to the heat pump energy storage system respectively and is used to lead back the second high-temperature and high-pressure liquid water working medium in the first-stage flash steam supply system or the third high-temperature and high-pressure liquid water working medium in the second-stage flash steam supply system to the heat pump energy storage system.

[0011] A heat supply system, which is used to lead out the third high-temperature and high-pressure liquid water working medium of the second-stage flash steam supply system to the user end; and

[0012] A power supply system, which includes a solar power supply system, a wind power supply system, and a storage battery. Among them, the solar power supply system, the wind power supply system, and the expanded power generation of the first-stage flash steam supply system are stored in the storage battery.

[0013] According to an embodiment of the present invention, the heat pump energy storage system includes: a hot water storage tank, a water replenishing device, a heat pump circulation device, and a heating device. The water replenishing device is connected to the hot water storage tank and is used to replenish the water working medium for the hot water storage tank; the heat pump circulation device, part of which is located in the hot water storage tank, is used to perform a first-stage heating on the water working medium in the hot water storage tank; and the heating device, which is arranged in the hot water storage tank, is used to perform a second-stage heating on the water working medium in the hot water storage tank to generate a first high-temperature and high-pressure liquid water working medium.

[0014] According to an embodiment of the present invention, the water replenishing device includes: a heat storage replenishing water pump, a heat storage replenishing water pipe, a first stop valve, and a heat storage inlet water pipe. Among them, the heat storage replenishing water pipe passes through the heat storage preheater and is connected to the heat storage inlet water pipe, and the two are together connected to the heat storage replenishing water pump and the heat storage water tank. The first stop valve is installed on the inlet water pipe outside the heat storage replenishing water pump; and

[0015] The heat pump circulation device includes: a heat storage heat pump return liquid pipe, a heat storage heat pump liquid outlet pipe, a heat storage heat pump inlet liquid pipe, a heat storage heat pump evaporator, a heat storage heat pump evaporation pipe, a heat storage heat pump compressor, a heat storage heat pump exhaust pipe, and a heat storage heat pump condensation pipe that are connected end to end in sequence. And a heat storage heat pump expansion valve is provided on the heat storage heat pump inlet liquid pipe;

[0016] Among them, the heat storage heat pump return liquid pipe passes through the heat storage preheater and is connected to the heat storage heat pump liquid outlet pipe. The heat storage preheater is used to preheat the water working medium flowing through the heat storage replenishing water pipe. The heat storage heat pump evaporator is used to extract heat from the air. The heat storage heat pump condensation pipe is arranged in the heat storage water tank and is used to heat the water working medium to complete the first-stage heating.

[0017] According to an embodiment of the present invention, among them, the first-stage flash steam supply system includes:

[0018] A first-stage flash tank, which is used to generate first high-temperature and high-pressure steam and second high-temperature and high-pressure liquid water working medium;

[0019] A first-stage water diversion device, which connects the heat storage water tank and the first-stage flash tank;

[0020] A power generation and steam supply device, which connects the first-stage flash tank to the storage battery or the user end respectively, and is used to expand and generate electricity from the first high-temperature and high-pressure steam and store it in the storage battery, and lead out the first high-temperature and high-pressure steam after cooling and depressurizing to the user end; and

[0021] A first-stage drainage device, which is connected to the bottom of the first-stage flash tank.

[0022] According to an embodiment of the present invention, among them, the first-stage water diversion device includes:

[0023] A first-stage flash circulation pipe, which connects the heat storage water tank and the first-stage flash tank;

[0024] A first-stage flash circulation pump and a first-stage flash pressure reducing valve, which are arranged on the first-stage flash circulation pipe in sequence;

[0025] A first-stage flash first stop valve, which is arranged on the first-stage flash circulation pipe between the heat storage water tank and the first-stage flash circulation pump;

[0026] The first-stage flash second shut-off valve is provided on the first-stage flash circulation pipe between the first-stage flash pressure reducing valve and the first-stage flash tank; and

[0027] The first-stage flash atomizing nozzle is provided at the end of the first-stage flash circulation pipe and is located inside the first-stage flash tank;

[0028] Wherein, by opening the first-stage flash first shut-off valve and the first-stage flash second shut-off valve and adjusting the opening degree of the first-stage flash pressure reducing valve, the first-stage flash circulation pump sends the first high-temperature and high-pressure liquid working medium into the first-stage flash tank through the first-stage flash atomizing nozzle; and

[0029] The first-stage drainage device includes: a first-stage flash drain pipe communicating with the bottom of the first-stage flash tank and a first-stage flash third shut-off valve provided on the first-stage flash drain pipe.

[0030] According to an embodiment of the present invention, wherein the power generation and steam supply device includes: a first-stage flash inlet pipe, a first-stage flash expander, a first-stage flash exhaust pipe, a first-stage flash fourth shut-off valve, a third electric wire, and a third switch;

[0031] Wherein, the first-stage flash fourth shut-off valve is provided on the first-stage flash inlet pipe, the first-stage flash inlet pipe communicates with the first-stage flash tank and the first-stage flash expander, and the first-stage flash expander is connected to the storage battery through the third electric wire and the third switch.

[0032] According to an embodiment of the present invention, wherein the second-stage flash steam supply system includes:

[0033] A second-stage flash tank for generating a second high-temperature and high-pressure steam and a third high-temperature and high-pressure liquid working medium;

[0034] A second-stage water diversion device, the second-stage water diversion device communicating with the first-stage flash tank and the second-stage flash tank;

[0035] A third steam supply device, the third steam supply device communicating with the second-stage flash tank for leading out the second high-temperature and high-pressure steam to the user end;

[0036] A fourth steam supply device, the fourth steam supply device communicating with the second-stage flash tank for heating and pressurizing the second high-temperature and high-pressure steam to generate a first high-temperature and high-pressure steam and leading it out to the user end; and

[0037] A second-stage drainage device, the second-stage drainage device communicating with the bottom of the second-stage flash tank.

[0038] According to an embodiment of the present invention, wherein the second-stage water diversion device includes:

[0039] The secondary flash evaporation circulation pipe, and the secondary flash evaporation circulation pipe communicates with the primary flash evaporation tank and the secondary flash evaporation tank;

[0040] The secondary flash evaporation circulation pump and the secondary flash evaporation pressure reducing valve are sequentially arranged on the secondary flash evaporation circulation pipe;

[0041] The secondary flash evaporation first stop valve is arranged on the secondary flash evaporation circulation pipe between the primary flash evaporation tank and the secondary flash evaporation circulation pump;

[0042] The secondary flash evaporation second stop valve is arranged on the secondary flash evaporation circulation pipe between the secondary flash evaporation pressure reducing valve and the secondary flash evaporation tank; and

[0043] The secondary flash evaporation atomizing nozzle is arranged at the end of the secondary flash evaporation circulation pipe and is located inside the secondary flash evaporation tank;

[0044] Wherein, by opening the secondary flash evaporation first stop valve and the secondary flash evaporation second stop valve and adjusting the opening degree of the secondary flash evaporation pressure reducing valve, the secondary flash evaporation circulation pump sends the second high-temperature and high-pressure liquid working medium into the secondary flash evaporation tank through the secondary flash evaporation atomizing nozzle; and

[0045] The secondary drainage device includes: a secondary flash evaporation drain pipe communicating with the bottom of the secondary flash evaporation tank and a secondary flash evaporation third stop valve arranged on the secondary flash evaporation drain pipe.

[0046] According to an embodiment of the present invention, wherein, the third gas supply device includes:

[0047] The secondary flash evaporation inlet pipe, the secondary flash evaporation exhaust bypass pipe and the secondary flash evaporation exhaust pipe which are sequentially communicated, and the secondary flash evaporation fifth stop valve is arranged on the secondary flash evaporation exhaust bypass pipe;

[0048] The fourth gas supply device includes:

[0049] The secondary flash evaporation steam compressor is communicated with the secondary flash evaporation tank through the secondary flash evaporation inlet pipe, and the secondary flash evaporation exhaust pipe is communicated with the secondary flash evaporation steam compressor;

[0050] The secondary flash evaporation fourth stop valve is arranged on the secondary flash evaporation inlet pipe;

[0051] The secondary flash evaporation make-up water pipe is communicated with the secondary flash evaporation steam compressor;

[0052] The secondary flash evaporation sixth stop valve and the secondary flash evaporation make-up water pump are arranged on the secondary flash evaporation make-up water pipe for supplementing the working medium for the secondary flash evaporation steam compressor;

[0053] Among them, the third gas supply device is used to supply second high-temperature and high-pressure steam, the fourth gas supply device is used to supply first high-temperature and high-pressure steam, and the second-stage flash fifth stop valve and the second-stage flash fourth stop valve are used to control the flow of the second high-temperature and high-pressure steam to the third gas supply device or the fourth gas supply device.

[0054] According to an embodiment of the present invention, among them, the return water system includes:

[0055] A first return water pipe, connecting the second-stage flash tank and the hot water storage tank;

[0056] A second return water pipe, connecting the first-stage flash tank and the first return water pipe;

[0057] A return water circulation pump, arranged on the first return water pipe;

[0058] A second stop valve, arranged on the second return water pipe;

[0059] A third stop valve, arranged on the first return water pipe between the second-stage flash tank and the return water circulation pump;

[0060] A fourth stop valve, arranged on the first return water pipe between the return water circulation pump and the hot water storage tank.

[0061] According to an embodiment of the present invention, among them, the heating system includes:

[0062] A heating pipe, connecting the second-stage flash tank and the user end;

[0063] A hot water supply pump, arranged on the heating pipe, and used to lead the third high-temperature and high-pressure liquid working medium in the second-stage flash tank to the user end;

[0064] A fifth stop valve, arranged on the heating pipe between the hot water supply pump and the user end; and

[0065] A sixth stop valve, arranged on the heating pipe between the second-stage flash tank and the hot water supply pump.

[0066] According to an embodiment of the present invention, among them, the solar power supply system includes: a solar power generation panel, a first electric wire, and a first switch. Among them, the solar power generation panel is electrically connected to the storage battery through the first electric wire and the first switch;

[0067] The wind power supply system includes: a wind power generator, a second electric wire, and a second switch. Among them, the wind power generator is electrically connected to the storage battery through the second electric wire and the second switch;

[0068] Among them, the storage battery is electrically connected to the secondary flash steam compressor through a fourth switch, a sixth switch, and a fifth wire.

[0069] The storage battery is electrically connected to the heating device through a fourth switch, a fifth switch, and a fourth wire.

[0070] The storage battery is electrically connected to the heat storage heat pump compressor.

[0071] One embodiment of the present invention has the following advantages or beneficial effects:

[0072] The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation of the present invention includes a heat pump energy storage system, a primary flash steam supply system, a secondary flash steam supply system, a return water system, a heating system, and a power supply system. The heat pump energy storage system realizes primary heating through a heat pump cycle device during the low electricity consumption period at night in the city, and realizes secondary heating through a heating device to store thermal energy. The primary flash steam supply system is connected to the heat pump energy storage system to depressurize and flash the first high-temperature and high-pressure liquid working medium introduced from the heat pump energy storage system to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid working medium, expand and generate electricity with the first high-temperature and high-pressure steam and store it in the storage battery, or lead out the first high-temperature and high-pressure steam after cooling and depressurizing to the user end. The secondary flash steam supply system is connected to the primary flash steam supply system to depressurize and flash the second high-temperature and high-pressure liquid working medium introduced from the primary flash steam supply system to generate a second high-temperature and high-pressure steam and a third high-temperature and high-pressure liquid working medium, lead out the second high-temperature and high-pressure steam to the user end, or lead out the first high-temperature and high-pressure steam after heating and pressurizing the second high-temperature and high-pressure steam to the user end. The return water system is connected to the primary flash steam supply system, the secondary flash steam supply system, and the heat pump energy storage system to lead back the remaining high-temperature and high-pressure liquid working medium in the primary flash steam supply system and the secondary flash steam supply system to the heat pump energy storage system. The heating system is used to lead out the third high-temperature and high-pressure liquid working medium of the secondary flash steam supply system to the user end. The power supply system stores the solar power supply system, the wind power supply system, and the expanded power generation of the primary flash steam supply system in the storage battery.

[0073] 1. During the low electricity consumption period at night in the city, thermal energy is stored through a heat pump cycle device and electric heating, effectively solving the dependence on heat sources in application production sites and enabling direct use in many application scenarios without heat sources.

[0074] 2. During the low electricity consumption period of the city at night, a large amount of high-temperature heat energy is stored by means of electric heating, and high-temperature and high-pressure steam is generated by means of flash evaporation and steam compression, avoiding the huge power consumption of directly using an electric boiler, as well as the high electricity price during the peak electricity period and the operating cost of the electric boiler under peak-valley electricity, reducing the operating cost of the equipment and improving the economy of steam generation.

[0075] 3. By using high-temperature and high-pressure hot water above 200 °C for heat storage, the water working medium is cheap, has a low usage cost, and has no corrosion to the water tank, effectively avoiding the high usage cost of molten salt heat storage.

[0076] 4. By directly flashing high-temperature and high-pressure hot water above 200 °C to generate high-temperature and high-pressure steam, the heat exchange temperature and heat exchange system required for molten salt heat storage are effectively avoided, improving the heat exchange efficiency and reducing the equipment cost.

[0077] 5. By means of flash evaporation and coupling with a steam compressor, not only can the demand for high-temperature and high-pressure steam above 200 °C be met, but also the demand for medium-temperature and medium-pressure steam at 100 - 200 °C can be met, and the steam demand within almost all ranges of industrial heating can be satisfied.

[0078] 6. At the same time, an expansion machine power generation system can provide a certain amount of electric energy while supplying steam, which can supply both electric energy and heat, further reducing the overall energy consumption and operating cost of the system.

[0079] At the same time, the system is equipped with a function of supplying hot water, further expanding the available range and meeting the needs of more users.

[0080] At the same time, solar power generation panels and wind turbines are coupled in the system. Not only can clean solar energy and wind energy be used for power generation to supply the operation of the steam compressor during the day, but also they can be stored in the storage battery for use by the heat pump compressor and electric heater at night, effectively using clean solar energy and wind energy and reducing the overall energy consumption of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other features and advantages of the present invention will become more obvious.

[0082] Figure 1 It is a schematic diagram of a comprehensive energy system for high-pressure steam supply based on wind power energy storage and solar power generation shown according to an exemplary embodiment.

[0083] Among them, the reference numerals are explained as follows:

[0084] 1. Heat pump heat storage system; 11. Hot water storage tank

[0085] 12. Water replenishing device; 121. Heat storage make-up water pump; 122. Heat storage make-up water pipe; 123. First stop valve; 124. Heat storage inlet pipe;

[0086] 13. Heat pump cycle device; 131. Heat storage heat pump return liquid pipe; 132. Heat storage heat pump outlet liquid pipe; 133. Heat storage heat pump inlet liquid pipe; 134. Heat storage heat pump evaporator; 135. Heat storage heat pump evaporation pipe; 136. Heat storage heat pump compressor; 137. Heat storage heat pump exhaust pipe; 138. Heat storage heat pump condensing pipe; 139. Heat storage heat pump expansion valve;

[0087] 14. Heating device; 15. Heat storage preheater;

[0088] 2. Primary flash steam supply system; 21. Primary flash tank;

[0089] 22. Primary water diversion device; 221. Primary flash circulation pipe; 222. Primary flash circulation pump; 223. Primary flash pressure reducing valve; 224. First stop valve for primary flash; 225. Second stop valve for primary flash; 226. Primary flash atomizing nozzle;

[0090] 23. Power generation and steam supply device; 231. Primary flash inlet pipe; 232. Primary flash expander; 233. Primary flash exhaust pipe; 234. Fourth stop valve for primary flash; 235. Third electric wire; 236. Third switch;

[0091] 24. Primary drainage device; 241. Primary flash drain pipe; 242. Third stop valve for primary flash;

[0092] 3. Secondary flash steam supply system; 31. Secondary flash tank;

[0093] 32. Secondary water diversion device; 321. Secondary flash circulation pipe; 322. Secondary flash circulation pump; 323. Secondary flash pressure reducing valve; 324. First stop valve for secondary flash; 325. Second stop valve for secondary flash; 326. Secondary flash atomizing nozzle;

[0094] 33. Third steam supply device; 331. Secondary flash inlet pipe; 332. Secondary flash exhaust bypass pipe; 333. Secondary flash exhaust pipe; 334. Fifth stop valve for secondary flash;

[0095] 34. Fourth steam supply device; 341. Secondary flash steam compressor; 342. Secondary flash make-up water pipe; 343. Sixth stop valve for secondary flash; 344. Secondary flash make-up water pump; 345. Fourth stop valve for secondary flash;

[0096] 35. Secondary drainage device; 351. Secondary flash drain pipe; 352. Third stop valve for secondary flash;

[0097] 4. Return water system; 41. First return water pipe; 42. Second return water pipe; 43. Return water circulation pump; 44. Second stop valve; 45. Third stop valve; 46. Fourth stop valve;

[0098] 5. Heating system; 51. Heating pipe; 52. Hot water supply pump; 53. Fifth stop valve; 54. Sixth stop valve;

[0099] 6. Power supply system;

[0100] 61. Solar power supply system; 611. Solar power generation panel; 612. First electric wire; 613. First switch;

[0101] 62. Wind power supply system; 621. Wind turbine; 622. Second electric wire; 623. Second switch;

[0102] 63. Storage battery; 64. Fourth switch; 65. Sixth switch; 66. Fifth electric wire; 67. Fifth switch; 68. Fourth electric wire. Detailed implementation manners

[0103] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0104] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0105] As Figure 1 shown, Figure 1 shows a schematic diagram of a comprehensive energy system for high-pressure steam supply based on wind power storage heating and solar power generation provided by the present invention.

[0106] The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to an embodiment of the present invention includes a heat pump energy storage system 1, a first-stage flash steam supply system 2, a second-stage flash steam supply system 3, a return water system 4, a heat supply system 5, and a power supply system 6. The heat pump energy storage system 1 heats and pressurizes the introduced water working medium through first-stage heating and second-stage heating to generate a first high-temperature and high-pressure liquid water working medium; the first-stage flash steam supply system 2 is connected to the heat pump energy storage system 1 and is used for depressurizing and flashing the first high-temperature and high-pressure liquid water working medium introduced from the heat pump energy storage system 1 to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid water working medium, expanding and generating electricity with the first high-temperature and high-pressure steam, or leading out the first high-temperature and high-pressure steam after cooling and depressurizing to the user end;

[0107] The second-stage flash steam supply system 3 is connected to the first-stage flash steam supply system 2 and is used for depressurizing and flashing the second high-temperature and high-pressure liquid water working medium introduced from the first-stage flash steam supply system 2 to generate a second high-temperature and high-pressure steam and a third high-temperature and high-pressure liquid water working medium, leading out the second high-temperature and high-pressure steam to the user end, or leading out the first high-temperature and high-pressure steam after heating and pressurizing the second high-temperature and high-pressure steam to the user end; and

[0108] The return water system 4 connects the first-stage flash steam supply system 2 and the second-stage flash steam supply system 3 to the heat pump energy storage system 1 respectively and is used for leading back the second high-temperature and high-pressure liquid water working medium in the first-stage flash steam supply system 2 or the third high-temperature and high-pressure liquid water working medium in the second-stage flash steam supply system 3 to the heat pump energy storage system 1;

[0109] The heat supply system 5 is used for leading out the third high-temperature and high-pressure liquid water working medium of the second-stage flash steam supply system 3 to the user end; and

[0110] The power supply system 6 includes a solar power supply system 61, a wind power supply system 62, and a storage battery 63. Among them, the power generated by expanding the first-stage flash steam supply system 2 by the solar power supply system 61 and the wind power supply system 62 is stored in the storage battery 63.

[0111] Among them, during the low electricity consumption period of the city at night, the heat pump energy storage system 1 generates the first high-temperature and high-pressure liquid working medium by means of two-stage heating to store heat energy, effectively solving the dependence on heat sources in the application production site and can also be directly used in many application scenarios without heat sources. The first-stage flash steam supply system 2 and the second-stage flash steam supply system 3 can both generate high-temperature and high-pressure steam by means of flash evaporation and steam compression, avoiding the huge power consumption of directly using an electric boiler. And it can generate a variety of high-temperature and high-pressure steam for the client to use. The return water system 4 can lead the remaining high-temperature and high-pressure liquid working medium of the first-stage flash steam supply system 2 and the second-stage flash steam supply system 3 back to the heat pump energy storage system 1 for circulating heating. The heat supply system 5 realizes the supply of the third high-temperature and high-pressure liquid working medium of the second-stage flash steam supply system 3 to the user. The solar power supply system 61 and the wind power supply system 62 of the power supply system 6 can both generate electricity and store it in the storage battery 63 for the use of the entire device when conditions permit.

[0112] In a preferred embodiment of the present invention, the heat pump energy storage system 1 includes: a hot water storage tank 11, a water replenishing device 12, a heat pump circulation device 13, and a heating device 14. The water replenishing device 12 is connected to the hot water storage tank 11 and is used to replenish the working medium for the hot water storage tank 11. The heat pump circulation device 13 is partially located in the hot water storage tank 11 and is used to perform the first-stage heating on the working medium in the hot water storage tank 11; the heating device 14 is arranged in the hot water storage tank 11 and is used to heat the working medium in the hot water storage tank 11 and perform the second-stage heating to generate the first high-temperature and high-pressure liquid working medium; and a drainage device is connected to the bottom of the hot water storage tank 11.

[0113] As Figure 1 shown, the heat pump energy storage system 1 stores the working medium through the hot water storage tank 11, realizes the first-stage heating through the heat pump circulation device 13, and realizes the second-stage heating through the heating device 14 to generate the first high-temperature and high-pressure liquid working medium. The heating device 14 can be an electric heater. The first high-temperature and high-pressure liquid working medium is preferably at a temperature of 200 °C and a pressure above 1.555 MPa. The hot water storage tank 11 stores most of the first high-temperature and high-pressure liquid working medium in a liquid state. Only a small amount exists in the form of steam, and heat storage is realized by using the high-temperature and high-pressure working medium.

[0114] In a preferred embodiment of the present invention, the water replenishing device 12 includes: a heat storage water replenishing pump 121, a heat storage water replenishing pipe 122, a first stop valve 123, and a heat storage water inlet pipe 124. Among them, the heat storage water replenishing pipe 122 passes through the heat storage preheater 15 and is connected to the heat storage water inlet pipe 124, and the two are together connected to the heat storage water replenishing pump 121 and the hot water storage tank 11. The first stop valve 123 is installed on the inlet pipe outside the heat storage water replenishing pump 121; and

[0115] The heat pump cycle device 13 includes: a heat storage heat pump liquid return pipe 131, a heat storage heat pump liquid outlet pipe 132, a heat storage heat pump liquid inlet pipe 133, a heat storage heat pump evaporator 134, a heat storage heat pump evaporation pipe 135, a heat storage heat pump compressor 136, a heat storage heat pump exhaust pipe 137, and a heat storage heat pump condensing pipe 138 that are connected end to end in sequence, and a heat storage heat pump expansion valve 139 is arranged on the heat storage heat pump liquid inlet pipe 133;

[0116] Among them, the heat storage heat pump liquid return pipe 131 passes through the heat storage preheater 15 and is connected to the heat storage heat pump liquid outlet pipe 132. The heat storage preheater 15 is used to preheat the water working medium flowing through the heat storage make-up water pipe 122. The heat storage heat pump evaporator 134 is used to extract heat from the air. The heat storage heat pump condensing pipe 138 is arranged in the heat storage water tank 11 and is used to heat the water working medium to complete the first-stage heating.

[0117] As Figure 1 shown, when the system is working normally, during the valley electricity period at night, the electricity price is cheap and the electricity load is sufficient. Open the first stop valve 123, and start the heat storage make-up water pump 121 to introduce the water working medium into the heat storage water tank 11 through the heat storage make-up water pipe 122 via the heat storage preheater 15. Ensure that there is sufficient water working medium stored in the heat storage water tank 11.

[0118] The heat pump working medium flows through the heat storage heat pump liquid return pipe 131, the heat storage heat pump liquid outlet pipe 132, the heat storage heat pump expansion valve 139, the heat storage heat pump liquid inlet pipe 133, the heat storage heat pump evaporator 134, the heat storage heat pump evaporation pipe 135, the heat storage heat pump compressor 136, the heat storage heat pump exhaust pipe 137, and the heat storage heat pump condensing pipe 138 to form a complete cycle. Heat is extracted from the air in the heat storage heat pump evaporator 134. Condensation heat release occurs in the heat storage heat pump condensing pipe 138 to heat the water working medium in the heat storage water tank 11, heating its temperature to about 120 °C to achieve the first-stage heating. In addition, the supplementary water working medium flowing from the heat storage make-up water pipe 122 into the heat storage inlet pipe 124 in the heat storage preheater 15 is preheated by the heat pump working medium in the heat storage heat pump liquid return pipe 131.

[0119] In addition, the heating device 14 is preferably a heater, which heats the water working medium in the heat storage water tank 11 during the low electricity consumption period at night, heating its temperature to above 200 °C, with the corresponding pressure above 1.555 MPa, and keeping most of the water working medium in it in a liquid state and a small amount in a steam state to achieve the second-stage heating, thereby realizing heat storage by using the high-temperature and high-pressure water working medium.

[0120] In a preferred embodiment of the present invention, the primary flash steam supply system 2 includes: a primary flash tank 21, a primary water intake device 22, a power generation and steam supply device 23, and a primary drainage device 24. The primary flash tank 21 is used to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid working medium; the primary water intake device 22 connects the hot water storage tank 11 and the primary flash tank 21; the power generation and steam supply device 23 connects the primary flash tank 21 to the battery 63 or the user terminal respectively, and is used to expand and generate electricity from the first high-temperature and high-pressure steam and store it in the battery 63, and cool down and reduce the pressure of the first high-temperature and high-pressure steam and lead it out to the user terminal; and the primary drainage device 24 connects to the bottom of the primary flash tank 21.

[0121] As Figure 1 shown, the primary water intake device 22 introduces the first high-temperature and high-pressure liquid working medium with a temperature of 200 °C and a pressure above 1.555 MPa in the hot water storage tank 11 into the primary flash tank 21. The primary flash tank 21 performs pressure-reducing flashing on it to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid working medium. The first high-temperature and high-pressure steam is preferably saturated steam, and the second high-temperature and high-pressure liquid working medium is preferably saturated working medium, and both are preferably at a temperature of 180 °C and a pressure of about 1.003 MPa. The power generation and steam supply device 23 can expand and generate electricity from the first high-temperature and high-pressure steam and store it in the battery 63, and can also cool down and reduce the pressure of the first high-temperature and high-pressure steam and supply it for use by the user terminal.

[0122] In a preferred embodiment of the present invention, the primary water intake device 22 includes: a primary flash circulation pipe 221, a primary flash circulation pump 222, a primary flash pressure reducing valve 223, a primary flash first stop valve 224, a primary flash second stop valve 225, and a primary flash atomizing nozzle 226. The primary flash circulation pipe 221 connects the hot water storage tank 11 and the primary flash tank 21; the primary flash circulation pump 222 and the primary flash pressure reducing valve 223 are sequentially arranged on the primary flash circulation pipe 221; the primary flash first stop valve 224 is arranged on the primary flash circulation pipe 221 between the hot water storage tank 11 and the primary flash circulation pump 222; the primary flash second stop valve 225 is arranged on the primary flash circulation pipe 221 between the primary flash pressure reducing valve 223 and the primary flash tank 21; and the primary flash atomizing nozzle 226 is arranged at the end of the primary flash circulation pipe 221 and is located inside the primary flash tank 21. Among them, by opening the primary flash first stop valve 224 and the primary flash second stop valve 225 and adjusting the opening degree of the primary flash pressure reducing valve 223, the primary flash circulation pump 222 sends the first high-temperature and high-pressure liquid working medium into the primary flash tank 21 through the primary flash atomizing nozzle 226; and the primary drainage device 24 includes: a primary flash drain pipe 241 connecting to the bottom of the primary flash tank 21 and a primary flash third stop valve 242 arranged on the primary flash drain pipe 241.

[0123] As Figure 1As shown, the primary flash evaporation circulation pipe 221 extends upward from the bottom of the hot water storage tank 11 to the top of the primary flash evaporation tank 21 and enters the primary flash evaporation tank 21. The first primary flash evaporation stop valve 224 and the second primary flash evaporation stop valve 225 are opened simultaneously, the primary flash evaporation circulation pump 222 is started, and the opening degree of the primary flash evaporation pressure reducing valve 223 is adjusted to introduce the first high-temperature and high-pressure liquid working medium in the hot water storage tank 11 into the primary flash evaporation tank 21 through the primary flash evaporation atomizing nozzle 226. The primary flash evaporation atomizing nozzle 226 includes a plurality of nozzles and can adjust the spraying condition. The primary flash evaporation drain pipe 241 communicates with the bottom of the primary flash evaporation tank 21 to facilitate the discharge of the excess working medium in the primary flash evaporation tank 21.

[0124] In a preferred embodiment of the present invention, the power generation and gas supply device 23 includes: a primary flash evaporation inlet pipe 231, a primary flash evaporation expander 232, a primary flash evaporation exhaust pipe 233, a fourth primary flash evaporation stop valve 234, a third electric wire 235, and a third switch 236. Among them, the fourth primary flash evaporation stop valve 234 is provided on the primary flash evaporation inlet pipe 231, the primary flash evaporation inlet pipe 231 communicates with the primary flash evaporation tank 21 and the primary flash evaporation expander 232, and the primary flash evaporation expander 232 is connected to the storage battery 63 through the third electric wire 235 and the third switch 236.

[0125] As Figure 1 shown, the fourth primary flash evaporation stop valve 234 is opened, and the first high-temperature and high-pressure steam in the primary flash evaporation tank 21 enters the primary flash evaporation expander 232 through the primary flash evaporation inlet pipe 231, and is cooled and depressurized under its action and supplied to the user end through the primary flash evaporation exhaust pipe 233. The primary flash evaporation expander 232 can also act on the first high-temperature and high-pressure steam for expansion power generation, and thus be stored in the storage battery 63 through the third electric wire 235 and the third switch 236.

[0126] In addition, the primary flash evaporation expander 232 can also be used to pressurize the working medium in the hot water storage tank 11, so that, together with the heating device 14, the working medium in the hot water storage tank 11 is formed into the first high-temperature and high-pressure liquid working medium.

[0127] In a preferred embodiment of the present invention, the secondary flash evaporation steam supply system 3 includes: a secondary flash evaporation tank 31, a secondary water introduction device 32, a third gas supply device 33, a fourth gas supply device 34, and a secondary drainage device 35. The secondary flash evaporation tank 31 is used to generate the second high-temperature and high-pressure steam and the third high-temperature and high-pressure liquid working medium; the secondary water introduction device 32 communicates with the primary flash evaporation tank 21 and the secondary flash evaporation tank 31; the third gas supply device 33 communicates with the secondary flash evaporation tank 31 and is used to lead out the second high-temperature and high-pressure steam to the user end; the fourth gas supply device 34 communicates with the secondary flash evaporation tank 31 and is used to heat and pressurize the second high-temperature and high-pressure steam to generate the first high-temperature and high-pressure steam and lead it out to the user end; and the secondary drainage device 35 communicates with the bottom of the secondary flash evaporation tank 31.

[0128] As Figure 1 shown, the secondary water intake device 32 introduces the second high-temperature and high-pressure liquid water working medium with a temperature of 180°C and a pressure near 1.003 MPa in the primary flash tank 21 into the secondary flash tank 31. The secondary flash tank 31 reduces the pressure of it for flashing to generate a third high-temperature and high-pressure steam with a temperature of 120 - 160°C and a pressure near 0.199 - 0.618 MPa, and simultaneously generates a third high-temperature and high-pressure liquid water working medium with a temperature of 120 - 160°C and a pressure near 0.199 - 0.618 MPa. And the third high-temperature and high-pressure steam is preferably saturated steam, and the third high-temperature and high-pressure liquid water working medium is preferably saturated water working medium. The third gas supply device 33 can supply the third high-temperature and high-pressure steam to the user side for use. The fourth gas supply device 34 can compress the third high-temperature and high-pressure steam to form a first high-temperature and high-pressure steam for supplying to the user side for use. In addition, it can also be compressed to form other high-temperature and high-pressure steam.

[0129] In a preferred embodiment of the present invention, the secondary water intake device 32 includes a secondary flash circulation pipe 321, a secondary flash circulation pump 322, a secondary flash pressure reducing valve 323, a secondary flash first stop valve 324, a secondary flash second stop valve 325, and a secondary flash atomizing nozzle 326. The secondary flash circulation pipe 321 communicates with the primary flash tank 21 and the secondary flash tank 31; the secondary flash circulation pump 322 and the secondary flash pressure reducing valve 323 are sequentially arranged on the secondary flash circulation pipe 321; the secondary flash first stop valve 324 is arranged on the secondary flash circulation pipe 321 between the primary flash tank 21 and the secondary flash circulation pump 322; the secondary flash second stop valve 325 is arranged on the secondary flash circulation pipe 321 between the secondary flash pressure reducing valve 323 and the secondary flash tank 31; and the secondary flash atomizing nozzle 326 is arranged at the end of the secondary flash circulation pipe 321 and is located inside the secondary flash tank 31; wherein, by opening the secondary flash first stop valve 324 and the secondary flash second stop valve 325 and adjusting the opening of the secondary flash pressure reducing valve 323, the secondary flash circulation pump 322 sends the second high-temperature and high-pressure liquid water working medium into the secondary flash tank 31 through the secondary flash atomizing nozzle 326; and the secondary drainage device 35 includes: a secondary flash drain pipe 351 communicating with the bottom of the secondary flash tank 31 and a secondary flash third stop valve 352 arranged on the secondary flash drain pipe 351.

[0130] As Figure 1As shown in the figure, the secondary flash evaporation circulation pipe 321 extends upward from the bottom of the primary flash evaporation tank 21 to the top of the secondary flash evaporation tank 31 and enters the secondary flash evaporation tank 31. The first shut-off valve 324 and the second shut-off valve 325 of the secondary flash evaporation are opened simultaneously, the secondary flash evaporation circulation pump 322 is started, and the opening degree of the secondary flash evaporation pressure reducing valve 323 is adjusted to introduce the second high-temperature and high-pressure liquid water working medium in the primary flash evaporation tank 21 into the secondary flash evaporation tank 31 through the secondary flash evaporation atomizing nozzle 326. The secondary flash evaporation atomizing nozzle 326 includes a plurality of nozzles and can adjust the spraying condition. The secondary flash evaporation drain pipe 351 is communicated with the bottom of the secondary flash evaporation tank 31 to facilitate the discharge of the redundant water working medium in the secondary flash evaporation tank 31.

[0131] In a preferred embodiment of the present invention, the third gas supply device includes a secondary flash evaporation inlet pipe 331, a secondary flash evaporation exhaust bypass pipe 332, a secondary flash evaporation exhaust pipe 333, and a fifth shut-off valve 334 of the secondary flash evaporation. The secondary flash evaporation inlet pipe 331, the secondary flash evaporation exhaust bypass pipe 332, and the secondary flash evaporation exhaust pipe 333 are communicated in sequence. The fifth shut-off valve 334 of the secondary flash evaporation is arranged on the secondary flash evaporation exhaust bypass pipe 332. The fourth gas supply device 34 includes a secondary flash evaporation steam compressor 341, a secondary flash evaporation water supply pipe 342, a sixth shut-off valve 343 of the secondary flash evaporation, a secondary flash evaporation water supply pump 344, and a fourth shut-off valve 345 of the secondary flash evaporation. The secondary flash evaporation steam compressor 341 is communicated with the secondary flash evaporation tank 31 through the secondary flash evaporation inlet pipe 331, and the secondary flash evaporation exhaust pipe 333 is communicated with the secondary flash evaporation steam compressor 341; the fourth shut-off valve 345 of the secondary flash evaporation is arranged on the secondary flash evaporation inlet pipe 331; the secondary flash evaporation water supply pipe 342 is communicated with the secondary flash evaporation steam compressor 341; the sixth shut-off valve 343 of the secondary flash evaporation and the secondary flash evaporation water supply pump 344 are arranged on the secondary flash evaporation water supply pipe 342 and are used to supply water working medium to the secondary flash evaporation steam compressor 341; wherein, the third gas supply device 33 is used to supply the third high-temperature and high-pressure steam, the fourth gas supply device 34 is used to supply the first high-temperature and high-pressure steam, and the fifth shut-off valve 334 of the secondary flash evaporation and the fourth shut-off valve 345 of the secondary flash evaporation are used to control the flow direction of the third high-temperature and high-pressure steam to the third gas supply device 33 or the fourth gas supply device 34.

[0132] As Figure 1 shown in the figure, the fifth shut-off valve 334 of the secondary flash evaporation is opened and the fourth shut-off valve 345 of the secondary flash evaporation is closed, and the second high-temperature and high-pressure steam in the secondary flash evaporation tank 31 is supplied to the user end through the secondary flash evaporation inlet pipe 331, the secondary flash evaporation exhaust bypass pipe 332, and the secondary flash evaporation exhaust pipe 333.

[0133] Open the fourth shut-off valve 345 of the secondary flash evaporation and close the fifth shut-off valve 334 of the secondary flash evaporation. The second high-temperature and high-pressure steam in the secondary flash evaporation tank 31 passes through the secondary flash evaporation inlet pipe 331, is pressurized by the secondary flash evaporation steam compressor 341, and open the sixth shut-off valve 343 of the secondary flash evaporation, start the secondary flash evaporation make-up water pump 344, and supplement the working medium water for the secondary flash evaporation steam compressor 341 through the secondary flash evaporation make-up water pipe 342, so as to generate the first high-temperature and high-pressure steam with a temperature of 180 °C and a pressure above 1.003 MPa, and supply it to the user end through the secondary flash evaporation exhaust pipe 333. And this make-up water structure reduces the superheat degree during the compression process and ensures the safe and efficient compression process. The high-temperature and high-pressure steam pressurized by the secondary flash evaporation steam compressor 341 can also be high-temperature and high-pressure steam at other temperatures and pressures.

[0134] In a preferred embodiment of the present invention, the return water system 4 includes a first return water pipe 41, a second return water pipe 42, a return water circulation pump 43, a second shut-off valve 44, a third shut-off valve 45, and a fourth shut-off valve 46. The first return water pipe 41 communicates with the secondary flash evaporation tank 31 and the hot water storage tank 11; the second return water pipe 42 communicates with the primary flash evaporation tank 21 and the first return water pipe 41; the return water circulation pump 43 is arranged on the first return water pipe 41; the second shut-off valve 44 is arranged on the second return water pipe 42, and the third shut-off valve 45 is arranged on the first return water pipe 41 between the secondary flash evaporation tank 31 and the return water circulation pump 43; the fourth shut-off valve 46 is arranged on the first return water pipe 41 between the return water circulation pump 43 and the hot water storage tank 11.

[0135] As Figure 1 shown, after the primary flash evaporation steam supply system 2 finishes working, open the second shut-off valve 44 and the fourth shut-off valve 46, and start the return water circulation pump 43 to return the remaining working medium water in the primary flash evaporation tank 21 to the hot water storage tank 11 through the second return water pipe 42 and the first return water pipe 41.

[0136] After the secondary flash evaporation steam supply system 3 finishes working, open the third shut-off valve 45 and the fourth shut-off valve 46, and start the return water circulation pump 43 to return the remaining working medium water in the secondary flash evaporation tank 31 to the hot water storage tank 11 through the first return water pipe 41.

[0137] In a preferred embodiment of the present invention, the heating system 5 includes: a heating pipe 51, a hot water supply pump 52, a fifth shut-off valve 53, and a sixth shut-off valve 54. The heating pipe 51 communicates with the secondary flash evaporation tank 31 and the user end; the hot water supply pump 52 is arranged on the heating pipe 51 for leading out the third high-temperature and high-pressure liquid working medium water in the secondary flash evaporation tank 31 to the user end; the fifth shut-off valve 53 is arranged on the heating pipe 51 between the hot water supply pump 52 and the user end; and the sixth shut-off valve 54 is arranged on the heating pipe 51 between the secondary flash evaporation tank 31 and the hot water supply pump 52.

[0138] As Figure 1As shown, the heating system 5 can draw out the high-temperature and high-pressure water working medium in the secondary flash tank 31 for use at the user end.

[0139] In a preferred embodiment of the present invention, the solar power supply system 61 includes: a solar panel 611, a first electric wire 612, and a first switch 613. Among them, the solar panel 611 is electrically connected to the battery 63 through the first electric wire 612 and the first switch 613;

[0140] The wind power supply system 62 includes: a wind turbine 621, a second electric wire 622, and a second switch 623. Among them, the wind turbine 621 is electrically connected to the battery 63 through the second electric wire 622 and the second switch 623;

[0141] Among them, the battery 63 is electrically connected to the secondary flash steam compressor 341 through a fourth switch 64, a sixth switch 65, and a fifth electric wire 66;

[0142] The battery 63 is electrically connected to the heating device 14 through a fourth switch 64, a fifth switch 67, and a fourth electric wire 68;

[0143] The battery 63 is electrically connected to the heat storage heat pump compressor 136.

[0144] As Figure 1 shown, when the power supply system works, when solar energy is sufficient, the solar power supply system 61 works, the first switch 613 is turned on, and the generated electric energy is sent into the battery 63 for storage through the first electric wire 612; when wind energy is sufficient, the wind power supply system 62 works, the second switch 623 is turned on, and the generated electric energy is sent into the battery 63 for storage through the second electric wire 622; when the primary flash expander 232 works, the third switch 236 is turned on, and the generated electric energy is sent into the battery 63 for storage through the third electric wire 235; when energy is needed, the fourth switch 64 is turned on. During the day, the fourth switch 64 and the sixth switch 65 are turned on, and the electric energy in the battery 63 is sent through the fifth electric wire 66 to the secondary flash steam compressor 341 for compression use. At night, the fourth switch 64 and the fifth switch 67 are turned on, and the electric energy in the battery 63 is sent through the fourth electric wire 68 to the heating device 14 for heating use, and can also be supplied to the heat storage heat pump compressor 136 for compression use.

[0145] The integrated energy system for high-pressure steam supply based on wind power heat storage and solar power generation of the present invention includes a heat pump heat storage system 1, a first-stage flash steam supply system 2, a second-stage flash steam supply system 3, a return water system 4, a heat supply system 5, and a power supply system 6. The heat pump heat storage system 1 realizes primary heating through a heat pump cycle device 13 and secondary heating to store thermal energy through a heating device 14 during the low valley period of urban electricity consumption at night. The first-stage flash steam supply system 2 is connected to the heat pump heat storage system 1 to depressurize and flash the first high-temperature and high-pressure liquid working medium introduced from the heat pump heat storage system 1 to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid working medium, expand and generate electricity with the first high-temperature and high-pressure steam and store it in a storage battery 63, or lead out the first high-temperature and high-pressure steam after reducing its temperature and pressure to the user side. The second-stage flash steam supply system 3 is connected to the first-stage flash steam supply system 2 to depressurize and flash the second high-temperature and high-pressure liquid working medium introduced from the first-stage flash steam supply system 2 to generate a second high-temperature and high-pressure steam and a third high-temperature and high-pressure liquid working medium, lead out the second high-temperature and high-pressure steam to the user side, or lead out the first high-temperature and high-pressure steam after heating and pressurizing the second high-temperature and high-pressure steam to the user side. The return water system 4 is connected to the first-stage flash steam supply system 2, the second-stage flash steam supply system 3, and the heat pump heat storage system 1 to lead back the remaining high-temperature and high-pressure liquid working medium in the first-stage flash steam supply system 2 and the second-stage flash steam supply system 3 to the heat pump heat storage system 1. The heat supply system 5 is used to lead out the third high-temperature and high-pressure liquid working medium of the second-stage flash steam supply system 3 to the user side. The power supply system 6 stores the electricity generated by expanding the first-stage flash expander 232 of the solar power supply system 61, the wind power supply system 62, and the first-stage flash steam supply system 2 in the storage battery 63.

[0146] 1. During the low valley period of urban electricity consumption at night, thermal energy is stored by means of electric heating through the heat pump cycle device 13 and the heating device 14, effectively solving the dependence on heat sources in the application production site and enabling direct use in many application scenarios without heat sources.

[0147] 2. During the low valley period of urban electricity consumption at night, a large amount of high-temperature thermal energy is stored by means of electric heating, and high-temperature and high-pressure steam is generated through flash evaporation and steam compression, avoiding the huge power consumption of directly using an electric boiler, as well as the high electricity price during the peak electricity supply period and the operating cost of the electric boiler under peak-valley electricity, reducing the operating cost of the equipment and improving the economy of steam generation.

[0148] 3. By using high-temperature and high-pressure hot water above 200°C for heat storage, the price of the working medium is cheap, the usage cost is low, and there is no corrosion to the water tank, effectively avoiding the high usage cost of molten salt heat storage.

[0149] 4. By directly flashing high-temperature and high-pressure hot water above 200°C to generate high-temperature and high-pressure steam, the heat exchange temperature and heat exchange system required for molten salt heat storage are effectively avoided, improving the heat exchange efficiency and reducing the equipment cost.

[0150] 5. By means of flash evaporation and coupling with a steam compressor, not only can the demand for high-temperature and high-pressure steam above 200°C be met, but also the demand for medium-temperature and medium-pressure steam between 100 - 200°C can be satisfied, and the steam demand within almost all ranges of industrial heating can be met.

[0151] 6. At the same time, the power generation system of the first-stage flash expander 232 can provide a certain amount of electric energy while supplying steam, which can supply both electric energy and heat, further reducing the overall energy consumption and operating cost of the system.

[0152] At the same time, the system is equipped with a function of supplying hot water, further expanding the available range and meeting the needs of more users.

[0153] At the same time, the solar power generation panel 611 and the wind turbine 621 are coupled in the system. Not only can clean solar energy and wind energy be used for power generation to supply the operation of the second-stage flash steam compressor 341 during the day, but also they can be stored in the storage battery 63 for use by the night heat storage heat pump compressor 136 and the heating device 14, effectively using clean solar energy and wind energy and reducing the overall energy consumption of the system.

[0154] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0155] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation to the embodiments of the present invention.

[0156] In the description of this specification, the description of terms such as "one embodiment", "one preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0157] The above are only the preferred embodiments of the embodiments of the present invention and are not intended to limit the embodiments of the present invention. For those skilled in the art, various modifications and variations can be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included within the protection scope of the embodiments of the present invention.

Claims

1. A comprehensive energy system for high-pressure steam supply based on wind power energy storage and solar power generation, characterized in that, Including: A heat pump heat storage system (1), which realizes primary heating through a heat pump cycle device and secondary heating through a heating device to heat and pressurize the introduced water working medium to generate a first high-temperature and high-pressure liquid water working medium; A primary flash steam supply system (2), which is connected to the heat pump heat storage system (1), and is used for depressurizing and flashing the first high-temperature and high-pressure liquid water working medium introduced from the heat pump heat storage system (1) to generate a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid water working medium, expanding and generating electricity with the first high-temperature and high-pressure steam, or leading the first high-temperature and high-pressure steam out to the user end after cooling and depressurizing; A secondary flash steam supply system (3), which is connected to the primary flash steam supply system (2), and is used for depressurizing and flashing the second high-temperature and high-pressure liquid water working medium introduced from the primary flash steam supply system (2) to generate a second high-temperature and high-pressure steam and a third high-temperature and high-pressure liquid water working medium, leading the second high-temperature and high-pressure steam out to the user end, or leading the first high-temperature and high-pressure steam after heating and pressurizing the second high-temperature and high-pressure steam out to the user end; and A return water system (4), which connects the primary flash steam supply system (2) and the secondary flash steam supply system (3) to the heat pump heat storage system (1) respectively, and is used for leading the second high-temperature and high-pressure liquid water working medium in the primary flash steam supply system (2) or the third high-temperature and high-pressure liquid water working medium in the secondary flash steam supply system (3) back to the heat pump heat storage system (1); A heat supply system (5), which is used for leading the third high-temperature and high-pressure liquid water working medium of the secondary flash steam supply system (3) out to the user end; and A power supply system (6), which includes a solar power supply system (61), a wind power supply system (62) and a storage battery (63), wherein the electric energy generated by the solar power supply system (61), the wind power supply system (62) and the expansion power generation of the primary flash steam supply system (2) is stored in the storage battery (63).

2. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 1, wherein The heat pump heat storage system (1) includes: A hot water storage tank (11); A water replenishing device (12), which is connected to the hot water storage tank (11) and is used for replenishing the water working medium for the hot water storage tank (11); A heat pump cycle device (13), which is partially located in the hot water storage tank (11) and is used for primary heating of the water working medium in the hot water storage tank (11); and A heating device (14), which is arranged in the hot water storage tank (11) and is used for secondary heating of the water working medium in the hot water storage tank (11) to generate a first high-temperature and high-pressure liquid water working medium.

3. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 2, wherein The water replenishing device (12) includes: a heat storage makeup water pump (121), a heat storage makeup water pipe (122), a first stop valve (123), and a heat storage inlet pipe (124). Among them, the heat storage makeup water pipe (122) passes through the heat storage preheater (15) to communicate with the heat storage inlet pipe (124), and the two together communicate the heat storage makeup water pump (121) and the heat storage water tank (11). The first stop valve (123) is installed on the inlet pipe outside the heat storage makeup water pump (121); and The heat pump cycle device (13) includes: a heat storage heat pump liquid return pipe (131), a heat storage heat pump liquid outlet pipe (132), a heat storage heat pump liquid inlet pipe (133), a heat storage heat pump evaporator (134), a heat storage heat pump evaporation pipe (135), a heat storage heat pump compressor (136), a heat storage heat pump exhaust pipe (137), and a heat storage heat pump condensing pipe (138) that are connected end to end in sequence. And a heat storage heat pump expansion valve (139) is arranged on the heat storage heat pump liquid inlet pipe (133); Among them, the heat storage heat pump liquid return pipe (131) passes through the heat storage preheater (15) and communicates with the heat storage heat pump liquid outlet pipe (132). The heat storage preheater (15) is used to preheat the water working medium flowing through the heat storage makeup water pipe (122). The heat storage heat pump evaporator (134) is used to extract heat from the air. The heat storage heat pump condensing pipe (138) is arranged in the heat storage water tank (11) and is used to heat the water working medium to complete the primary heating.

4. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 3, wherein The primary flash steam supply system (2) includes: A primary flash tank (21) for generating a first high-temperature and high-pressure steam and a second high-temperature and high-pressure liquid water working medium; A primary water diversion device (22) that connects the heat storage water tank (11) and the primary flash tank (21); A power generation and steam supply device (23) that connects the primary flash tank (21) to the storage battery (63) or the user terminal respectively, for expanding and generating electricity from the first high-temperature and high-pressure steam and storing it in the storage battery (63), and leading out the first high-temperature and high-pressure steam after reducing the temperature and pressure to the user terminal; and A primary drainage device (24) that connects to the bottom of the primary flash tank (21).

5. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 4, characterized in that The primary water diversion device (22) includes: A primary flash circulation pipe (221) that connects the heat storage water tank (11) and the primary flash tank (21); A primary flash circulation pump (222) and a primary flash pressure reducing valve (223) that are arranged in sequence on the primary flash circulation pipe (221); A primary flash first stop valve (224) that is arranged on the primary flash circulation pipe (221) between the heat storage water tank (11) and the primary flash circulation pump (222); A primary flash second stop valve (225) that is arranged on the primary flash circulation pipe (221) between the primary flash pressure reducing valve (223) and the primary flash tank (21); and The primary flash atomizing nozzle (226) is arranged at the end of the primary flash circulation pipe (221) and is located inside the primary flash tank (21). Wherein, by opening the primary flash first stop valve (224) and the primary flash second stop valve (225) and adjusting the opening degree of the primary flash pressure reducing valve (223), the primary flash circulation pump (222) sends the first high-temperature and high-pressure liquid working medium into the primary flash tank (21) through the primary flash atomizing nozzle (226); and The primary drainage device (24) includes: a primary flash drain pipe (241) communicating with the bottom of the primary flash tank (21) and a primary flash third stop valve (242) arranged on the primary flash drain pipe (241).

6. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 4, wherein The power generation and steam supply device (23) includes: a primary flash inlet pipe (231), a primary flash expander (232), a primary flash exhaust pipe (233), a primary flash fourth stop valve (234), a third electric wire (235) and a third switch (236); Wherein, the primary flash fourth stop valve (234) is arranged on the primary flash inlet pipe (231), the primary flash inlet pipe (231) communicates with the primary flash tank (21) and the primary flash expander (232), and the primary flash expander (232) is connected to the storage battery (63) through the third electric wire (235) and the third switch (236).

7. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 5, characterized in that, The secondary flash steam supply system (3) includes: A secondary flash tank (31) for generating the second high-temperature and high-pressure steam and the third high-temperature and high-pressure liquid working medium; A secondary water diversion device (32) that communicates the primary flash tank (21) and the secondary flash tank (31); A third steam supply device (33) that communicates with the secondary flash tank (31) and is used to lead out the second high-temperature and high-pressure steam to the user end; A fourth steam supply device (34) that communicates with the secondary flash tank (31) and is used to heat and pressurize the second high-temperature and high-pressure steam to generate the first high-temperature and high-pressure steam and lead it out to the user end; and A secondary drainage device (35) that communicates with the bottom of the secondary flash tank (31).

8. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 7, wherein The secondary water diversion device (32) includes: A secondary flash circulation pipe (321) that communicates the primary flash tank (21) and the secondary flash tank (31); A secondary flash circulation pump (322) and a secondary flash pressure reducing valve (323) are sequentially arranged on the secondary flash circulation pipe (321); A secondary flash first stop valve (324) is arranged on the secondary flash circulation pipe (321) between the primary flash tank (21) and the secondary flash circulation pump (322). The second shut-off valve (325) of the secondary flash evaporation is arranged on the secondary flash evaporation circulation pipe (321) between the secondary flash evaporation pressure reducing valve (323) and the secondary flash evaporation tank (31); and The secondary flash evaporation atomizing nozzle (326) is arranged at the end of the secondary flash evaporation circulation pipe (321) and is located inside the secondary flash evaporation tank (31); Wherein, by opening the first shut-off valve (324) and the second shut-off valve (325) of the secondary flash evaporation and adjusting the opening degree of the secondary flash evaporation pressure reducing valve (323), the secondary flash evaporation circulation pump (322) sends the second high-temperature and high-pressure liquid working medium into the secondary flash evaporation tank (31) through the secondary flash evaporation atomizing nozzle (326); and The secondary drainage device (35) includes: a secondary flash evaporation drain pipe (351) communicating with the bottom of the secondary flash evaporation tank (31) and a third shut-off valve (352) arranged on the secondary flash evaporation drain pipe (351).

9. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 7, wherein The third gas supply device (33) includes: A secondary flash evaporation inlet pipe (331), a secondary flash evaporation exhaust bypass pipe (332) and a secondary flash evaporation exhaust pipe (333) connected in sequence and A secondary flash evaporation fifth shut-off valve (334) arranged on the secondary flash evaporation exhaust bypass pipe (332); The fourth gas supply device (34) includes: A secondary flash evaporation steam compressor (341) communicating with the secondary flash evaporation tank (31) through the secondary flash evaporation inlet pipe (331), and the secondary flash evaporation exhaust pipe (333) communicating with the secondary flash evaporation steam compressor (341); A secondary flash evaporation fourth shut-off valve (345) arranged on the secondary flash evaporation inlet pipe (331); A secondary flash evaporation make-up water pipe (342) communicating with the secondary flash evaporation steam compressor (341); A secondary flash evaporation sixth shut-off valve (343) and a secondary flash evaporation make-up water pump (344) arranged on the secondary flash evaporation make-up water pipe (342) for supplementing the working medium for the secondary flash evaporation steam compressor (341); Wherein, the third gas supply device (33) is used to supply the second high-temperature and high-pressure steam, the fourth gas supply device (34) is used to supply the first high-temperature and high-pressure steam, and the secondary flash evaporation fifth shut-off valve (334) and the secondary flash evaporation fourth shut-off valve (345) are used to control the flow direction of the second high-temperature and high-pressure steam to the third gas supply device (33) or the fourth gas supply device (34).

10. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 9, wherein The return water system (4) includes: A first return water pipe (41) communicating with the secondary flash evaporation tank (31) and the hot water storage tank (11); A second return water pipe (42) communicating with the primary flash evaporation tank (21) and the first return water pipe (41); A return water circulation pump (43) arranged on the first return water pipe (41); A second shut-off valve (44) arranged on the second return water pipe (42); A third shut-off valve (45) arranged on the first return water pipe (41) between the secondary flash evaporation tank (31) and the return water circulation pump (43); The fourth stop valve (46) is arranged on the first return water pipe (41) between the return water circulation pump (43) and the hot water storage tank (11).

11. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 10, characterized in that, The heating system (5) includes: A heating pipe (51) that communicates with the secondary flash tank (31) and the user end; A hot water supply pump (52) arranged on the heating pipe (51) for leading the third high-temperature and high-pressure liquid working medium in the secondary flash tank (31) to the user end; A fifth stop valve (53) arranged on the heating pipe (51) between the hot water supply pump (52) and the user end; and A sixth stop valve (54) arranged on the heating pipe (51) between the secondary flash tank (31) and the hot water supply pump (52).

12. The integrated energy system for high-pressure steam supply based on wind power energy storage and solar power generation according to claim 11, wherein The solar power supply system (61) includes: a solar panel (611), a first electric wire (612), and a first switch (613), wherein the solar panel (611) is electrically connected to the storage battery (63) through the first electric wire (612) and the first switch (613); The wind power supply system (62) includes: a wind turbine (621), a second electric wire (622), and a second switch (623), wherein the wind turbine (621) is electrically connected to the storage battery (63) through the second electric wire (622) and the second switch (623); Wherein, the storage battery (63) is electrically connected to the secondary flash steam compressor (341) through a fourth switch (64), a sixth switch (65), and a fifth electric wire (66); The storage battery (63) is electrically connected to the heating device (14) through a fourth switch (64), a fifth switch (67), and a fourth electric wire (68); The storage battery (63) is electrically connected to the heat storage heat pump compressor (136).

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