Dual-heat-source high-temperature heat pump steam generation system

Abstract

The utility model relates to heat pump technical field, concretely relates to a double heat source high temperature heat pump steam generation system. In order to make up for the deficiency of prior art, the present application provides a double heat source high temperature heat pump steam generation system. Double heat source high temperature heat pump steam generation system includes air source heat pump, waste heat source heat pump, water vapor compressor, flash tank, heat storage water tank, first circulating pump and second circulating pump. The flash tank, the first circulating pump and the air source heat pump are communicated and form the first circulating water circuit. The flash tank, the second circulating pump and the waste heat source heat pump are communicated and form the second circulating water circuit. The outlet of the flash tank is communicated with the water vapor compressor inlet. The heat storage water tank is communicated with the waste heat source heat pump and forms the third circulating water circuit. In view of the intermittency and fluctuation of the waste heat source, the double heat source high temperature heat pump steam generation system can improve the waste heat supply stability by configuring the heat storage water tank, and has good carbon reduction efficiency and investment income.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, specifically to a dual-heat-source high-temperature heat pump steam generation system. Background Technology

[0002] In industrial production settings, the intermittency and volatility of waste heat sources are significant issues. Common waste heat sources, such as exhaust gas, wastewater, and process waste heat, do not have consistently stable energy outputs and often fluctuate significantly due to various factors. Specifically, waste heat emissions can change drastically when production equipment starts up or stops. Waste heat generation also increases or decreases during production load adjustments. Furthermore, optimization or changes to production processes can directly lead to temporary shortages in waste heat supply. These factors collectively constitute the core problem of unstable waste heat output, posing a significant challenge to subsequent energy utilization.

[0003] This instability directly impacts the operational performance of single-source heat pump systems. Because these systems heavily rely on a continuous and stable supply of waste heat, they cannot adapt promptly to intermittent interruptions or significant fluctuations in output, easily leading to steam supply disruptions. This not only disrupts the normal rhythm of industrial production but may also affect product quality due to unstable steam supply, and even pose a potential threat to the safe operation of production equipment, becoming a key bottleneck restricting the efficient utilization of industrial waste heat.

[0004] From the current market perspective, most single-function heat pump steam generation systems on the market suffer from unstable heating. These systems are not designed to effectively address the fluctuations in waste heat sources, lacking corresponding adjustment mechanisms and buffering measures, making them ill-suited to the complex and ever-changing waste heat supply conditions in industrial production. In actual operation, even brief fluctuations in waste heat supply often lead to a sharp drop in heating system efficiency, or even frequent heating interruptions, failing to meet the stringent requirements of industrial production for stable steam supply and limiting their widespread application in the industrial sector.

[0005] Therefore, a new technology is urgently needed to solve this problem. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this application provides a dual-heat-source high-temperature heat pump steam generation system. The dual-heat-source high-temperature heat pump steam generation system adopts a complementary mode of waste heat source and air source. Given the intermittent and fluctuating nature of waste heat sources, the dual-heat-source high-temperature heat pump steam generation system, by configuring a hot water storage tank, can improve the stability of waste heat supply, while also achieving good carbon reduction efficiency and investment returns.

[0007] To achieve the above objectives, this utility model provides a dual-heat-source high-temperature heat pump steam generation system.

[0008] The dual-heat-source high-temperature heat pump steam generation system includes an air-source heat pump, a waste heat-source heat pump, a steam compressor, a flash tank, a hot water storage tank, a first circulation pump, and a second circulation pump.

[0009] The flash tank, the first circulation pump, and the air source heat pump are connected to form the first circulating water circuit. The flash tank, the second circulation pump, and the waste heat source heat pump are connected to form the second circulating water circuit. The outlet of the flash tank is connected to the inlet of the steam compressor.

[0010] The hot water storage tank is connected to the waste heat source heat pump to form a third circulating water loop. The hot water storage tank is equipped with a heat exchanger, which includes a heat release pipe. The inlet of the heat release pipe is connected to the waste hot water inlet pipe.

[0011] Preferably, the dual-heat-source high-temperature heat pump steam generation system includes a water supply pipe, which is connected to the inlet of the first circulation pump and / or the second circulation pump.

[0012] Preferably, a water supply shut-off valve is installed on the water supply pipe.

[0013] Preferably, a level gauge is installed inside the flash tank, and a signal connection is provided between the level gauge and the water supply shut-off valve.

[0014] Preferably, the dual-heat-source high-temperature heat pump steam generation system includes a first shut-off valve, which is installed on the pipeline connecting the first circulating pump and the air-source heat pump.

[0015] Preferably, the dual-heat-source high-temperature heat pump steam generation system includes a second shut-off valve, which is installed on the pipeline connecting the second circulating pump and the waste heat source heat pump.

[0016] Preferably, the dual-heat-source high-temperature heat pump steam generation system includes a first thermometer and / or a first pressure gauge, which is installed on the pipeline connecting the air source heat pump and / or the waste heat source heat pump to the flash tank. The first thermometer and / or the first pressure gauge is connected to the first circulating pump, the air source heat pump, the second circulating pump and / or the waste heat source heat pump via a signal connection.

[0017] Preferably, the dual-heat-source high-temperature heat pump steam generation system includes a second temperature gauge and / or a second pressure gauge, which is located at the outlet of the steam compressor, and a signal connection is provided between the second temperature gauge and / or the second pressure gauge and the steam compressor.

[0018] Preferably, the dual-heat-source high-temperature heat pump steam generation system includes a photovoltaic thermal module, which is connected to a hot water storage tank.

[0019] Preferably, a circulating water pump is installed on the pipe connecting the photovoltaic thermal module and the hot water storage tank.

[0020] Compared with the prior art, the beneficial effects of this application are as follows:

[0021] First, the dual-heat-source high-temperature heat pump steam generation system adopts a complementary mode of waste heat source and air source. The air source heat pump can switch to full-load operation in a short time, breaking the system's dependence on waste heat, perfectly meeting the needs of continuous industrial production, and making up for the shortcomings of a single heat pump steam generation system that cannot provide stable heating.

[0022] Secondly, the dual-heat-source high-temperature heat pump steam generation system, with its matching hot water storage tank, can effectively cope with the intermittency and fluctuation of waste heat sources, greatly improve the stability of waste heat heating, and at the same time provide a buffer for peak-shaving heating of air source heat pumps, ensuring the stable and efficient operation of the entire heating system.

[0023] Furthermore, the hot water storage tank can not only store industrial waste heat, but also store the heat generated by photovoltaics during the day. When the air source heat pump is insufficient for defrosting and heating in winter, the waste heat source heat pump can increase its power, and the hot water storage tank can release photovoltaic heat, further improving the energy utilization efficiency of the system. Attached Figure Description

[0024] This application can be better understood by describing its embodiments in conjunction with the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of a dual-heat-source high-temperature heat pump steam generation system according to this application.

[0026] Explanation of icon numbers:

[0027] 10. Air source heat pump; 11. Waste heat source heat pump; 12. Steam compressor; 13. Flash tank; 14. Hot water storage tank; 15. First circulation pump; 16. Second circulation pump; 17. First shut-off valve; 18. Second shut-off valve; 19. Heat exchanger; 20. Waste hot water inlet pipe; 21. Makeup water pipe; 22. Makeup water shut-off valve; 23. Level gauge; 24. First thermometer; 25. First pressure gauge; 26. Second thermometer; 27. Second pressure gauge. Detailed Implementation

[0028] Unless otherwise defined, the technical or scientific terms used in this specification and claims shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This utility model provides a method such as Figure 1 The dual-heat-source high-temperature heat pump steam generation system is shown.

[0034] The dual-heat-source high-temperature heat pump steam generation system includes an air-source heat pump 10, a waste heat source heat pump 11, a steam compressor 12, a flash tank 13, a hot water storage tank 14, a first circulation pump 15, and a second circulation pump 16.

[0035] The flash tank 13, the first circulation pump 15, and the air source heat pump 10 are connected to form a first circulating water circuit. The dual heat source high-temperature heat pump steam generation system may include a first shut-off valve 17, which is installed on the pipeline connecting the first circulation pump 15 and the air source heat pump 10.

[0036] The flash tank 13, the second circulation pump 16, and the waste heat source heat pump 11 are connected to form a second circulating water circuit. The dual heat source high-temperature heat pump steam generation system may include a second shut-off valve 18, which is installed on the pipeline connecting the second circulation pump 16 and the waste heat source heat pump 11.

[0037] The outlet of flash tank 13 is connected to the inlet of steam compressor 12.

[0038] In such Figure 1 In the illustrated embodiment, the liquid water in the flash tank 13 can enter the first circulating water circuit and the second circulating water circuit respectively. That is, a portion of the liquid water is pressurized by the first circulating pump 15 and then enters the air source heat pump 10 for heating, while another portion of the liquid water is pressurized by the second circulating pump 16 and then enters the waste heat source heat pump 11 for heating. The heated water then re-enters the flash tank 13 and flashes to generate a large amount of low-pressure steam. The low-pressure steam is heated and pressurized by the steam compressor 12 and then supplied to the heat-consuming end. In this embodiment, the air source heat pump 10 and the waste heat source heat pump 11 are connected in parallel, using a complementary mode of "waste heat priority + air source peak shaving" to heat the circulating water.

[0039] The hot water storage tank 14 is connected to the waste heat source heat pump 11 to form a third circulating water loop. A heat exchanger 19 is installed inside the hot water storage tank 14. The heat exchanger 19 includes a heat dissipation pipe, the inlet of which is connected to the waste hot water inlet pipe 20. Waste hot water can flow into the heat dissipation pipe of the heat exchanger 19 through the waste hot water inlet pipe 20, release heat within the hot water storage tank 14, and then flow out of the heat exchanger 19. Meanwhile, the circulating water in the hot water storage tank 14 absorbs heat and flows into the evaporator of the waste heat source heat pump 11, dissipates heat, flows out of the waste heat source heat pump 11, and then flows back into the hot water storage tank 14.

[0040] In some embodiments, the dual-heat-source high-temperature heat pump steam generation system includes a water supply pipe 21, which is connected to the inlet of the first circulation pump 15 and / or the second circulation pump 16.

[0041] In some embodiments, a water supply shut-off valve 22 is provided on the water supply pipe 21. A level gauge 23 may be provided inside the flash tank 13, and a signal connection is provided between the level gauge 23 and the water supply shut-off valve 22. When the level gauge 23 in the flash tank 13 detects that the liquid level in the flash tank 13 is low, the water supply shut-off valve 22 can be opened to supply water to the dual heat source high-temperature heat pump steam generation system.

[0042] In some embodiments, the dual-heat-source high-temperature heat pump steam generation system includes a first thermometer 24 and / or a first pressure gauge 25. The first thermometer 24 and / or the first pressure gauge 25 are disposed on the pipeline connecting the air source heat pump 10 and / or the waste heat source heat pump 11 to the flash tank 13. The first thermometer 24 and / or the first pressure gauge 25 are connected to the first circulation pump 15, the air source heat pump 10, the second circulation pump 16 and / or the waste heat source heat pump 11 by a signal connection.

[0043] In such Figure 1 In the illustrated embodiment, the first thermometer 24 is connected to the first circulating pump 15, the air source heat pump 10, the second circulating pump 16, and the waste heat source heat pump 11 via signal connections. When the dual-heat-source high-temperature heat pump steam generation system is running, the first thermometer 24 monitors the real-time temperature. When the real-time temperature is lower than the set temperature, the first circulating pump 15 and the first shut-off valve 17 are opened, and the air source heat pump 10 is started. When the real-time temperature is higher than the set temperature, the first circulating pump 15 and the first shut-off valve 17 are closed, and the air source heat pump 10 is shut down.

[0044] In some embodiments, the dual-heat-source high-temperature heat pump steam generating system includes a second temperature gauge 26 and / or a second pressure gauge 27, which are disposed at the outlet of the steam compressor 12, and a signal connection is provided between the second temperature gauge 26 and / or the second pressure gauge 27 and the steam compressor 12. Figure 1 In the embodiment shown, when the dual-heat-source high-temperature heat pump steam generation system is running, the second circulation pump 16 and the second shut-off valve 18 are opened, the waste heat source heat pump 11 is started, the steam compressor 12 is turned on, the second thermometer 26 monitors the set real-time temperature, and when the real-time temperature is lower than the set temperature, the operating hertz of the steam compressor 12 is increased.

[0045] In some embodiments, the dual-heat-source high-temperature heat pump steam generation system includes a photovoltaic thermal module connected to a hot water storage tank 14. A circulating water pump may be installed on the pipe connecting the photovoltaic thermal module and the hot water storage tank 14. By employing the photovoltaic thermal module, the hot water storage tank 14 can not only meet the needs of industrial waste heat storage but also store the heat generated by photovoltaics during the day. Especially in winter, when the air source heat pump 10 is insufficient for defrosting heating, the hot water storage tank 14 releases the heat extracted by photovoltaics, which can improve the power of the waste heat source heat pump 11.

[0046] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-heat-source high-temperature heat pump steam generation system, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes an air-source heat pump, a waste heat-source heat pump, a steam compressor, a flash tank, a hot water storage tank, a first circulation pump, and a second circulation pump. The flash tank, the first circulating pump, and the air source heat pump are connected to form a first circulating water circuit; the flash tank, the second circulating pump, and the waste heat source heat pump are connected to form a second circulating water circuit; the outlet of the flash tank is connected to the inlet of the steam compressor. The hot water storage tank is connected to the waste heat source heat pump to form a third circulating water circuit. The hot water storage tank is equipped with a heat exchanger, which includes a heat release pipe. The inlet of the heat release pipe is connected to the waste hot water inlet pipe.

2. The dual-heat-source high-temperature heat pump steam generation system according to claim 1, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes a water supply pipe, which is connected to the inlet of the first circulation pump and / or the second circulation pump.

3. The dual-heat-source high-temperature heat pump steam generation system according to claim 2, characterized in that, The water supply pipe is equipped with a water supply shut-off valve.

4. The dual-heat-source high-temperature heat pump steam generation system according to claim 3, characterized in that, The flash tank is equipped with a level gauge, and a signal connection is provided between the level gauge and the water supply shut-off valve.

5. The dual-heat-source high-temperature heat pump steam generation system according to claim 1, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes a first shut-off valve, which is installed on the pipe connecting the first circulating pump and the air-source heat pump.

6. The dual-heat-source high-temperature heat pump steam generation system according to claim 1, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes a second shut-off valve, which is installed on the pipeline connecting the second circulating pump and the waste heat source heat pump.

7. The dual-heat-source high-temperature heat pump steam generation system according to claim 1, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes a first temperature gauge and / or a first pressure gauge. The first temperature gauge and / or the first pressure gauge are installed on the pipeline connecting the air source heat pump and / or the waste heat source heat pump to the flash tank. The first temperature gauge and / or the first pressure gauge are connected to the first circulation pump, the air source heat pump, the second circulation pump and / or the waste heat source heat pump via a signal connection.

8. The dual-heat-source high-temperature heat pump steam generation system according to claim 1, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes a second temperature gauge and / or a second pressure gauge, which is located at the outlet of the steam compressor, and a signal connection is provided between the second temperature gauge and / or the second pressure gauge and the steam compressor.

9. The dual-heat-source high-temperature heat pump steam generation system according to claim 1, characterized in that, The dual-heat-source high-temperature heat pump steam generation system includes a photovoltaic thermal module, which is connected to the hot water storage tank.

10. The dual-heat-source high-temperature heat pump steam generation system according to claim 9, characterized in that, A circulating water pump is installed on the pipe connecting the photovoltaic thermal module and the hot water storage tank.

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