Water supply system based on heat pump system
By using natural working fluid as circulating working fluid in the heat pump system and combining with multiple water replenishment subsystems, the problem of environmental damage caused by the use of chlorofluorocarbon working fluid in the existing heat pump system is solved, and efficient waste heat recovery and high temperature are achieved Water supply through water to achieve the effect of energy conservation, emission reduction and environmental protection.
Patent Information
- Application Number
- CN202421126273.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing heat pump system uses chlorofluorocarbons as circulating working fluids, resulting in serious damage to the ozone layer and obvious greenhouse effects, and limited use and development prospects.
Use natural working fluid as the circulating working fluid of the heat pump system, and reduce the exhaust overheat of the compressor through a variety of water replenishment subsystems (external water replenishment subsystem, liquid collecting tank water replenishment subsystem and flash tank water replenishment subsystem) to improve the exhaust overheat of the compressor. System performance.
Effectively recycle waste heat, provide high-temperature effluent, avoid the damage to the environment by HCFCs, achieve the effect of energy conservation and emission reduction, and improve the operability and performance of the system.
Smart Images
Figure CN222438223U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat pumps, and in particular relates to a water supply system based on a heat pump system. Background Art
[0002] The heat pump system is a highly efficient energy-saving system that can effectively recycle low-grade energy, improve energy utilization efficiency, reduce the consumption of high-grade energy, and alleviate the pressure of the energy crisis. Therefore, the heat pump system has been widely used in social production and life.
[0003] However, heat pump systems usually use synthetic substances such as chlorofluorocarbons as circulating heat pump working fluids. Chlorofluorocarbons have serious damage to the ozone layer and a significant greenhouse effect, so their use and development prospects are limited.
[0004] Therefore, a new, efficient, green and environmentally friendly heat pump system is urgently needed to solve the above problems. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art, the present application provides a water supply system based on a heat pump system. It can use natural working fluid water as the circulating working fluid of the heat pump system, effectively recover waste heat and provide high-temperature outlet water for users. Using natural working fluid water as the circulating working fluid of the system can avoid the destructive effects of chlorofluorocarbons and other artificial synthetic working fluids on the environment, effectively protect the environment, and achieve the effect of energy saving, emission reduction and environmental protection. In addition, the system has a variety of water replenishment subsystems, which can be selected according to actual application requirements, with wider applicability and better performance.
[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.
[0007] In a first aspect, the present application provides a water supply system based on a heat pump system, comprising a heat pump system and a water replenishment system, wherein the heat pump system comprises a first heat pump working medium circulation loop, the water replenishment system is used to provide water to the heat pump system, and comprises an external water replenishment subsystem, a liquid collection tank water replenishment subsystem and a flash tank water replenishment subsystem;
[0008] The first heat pump working medium circulation loop comprises an evaporator, a flash tank, a water vapor compressor, a condenser and a liquid collecting tank which are connected in sequence, and the heat pump working medium is water.
[0009] Preferably, the heat pump system also includes a second heat pump working medium circulation loop, the second heat pump working medium circulation loop includes a first bypass pipe and a second bypass pipe, the two ends of the first bypass pipe are respectively connected to the liquid collecting tank and the flash tank, and the two ends of the second bypass pipe are respectively connected to the flash tank and the evaporator.
[0010] Preferably, the external water replenishment subsystem includes an external water pipe, which is connected to the water vapor compressor. The liquid collecting tank water replenishment subsystem includes a liquid collecting tank water replenishment pipe, one end of which is connected to the liquid collecting tank, and the other end is connected to the water vapor compressor. The flash tank water replenishment subsystem includes a flash tank water replenishment pipe, one end of which is connected to the flash tank, and the other end is connected to the water vapor compressor.
[0011] Preferably, the external water pipe, the liquid collecting tank water supply pipe and / or the flash tank water supply pipe are connected to the compression chamber of the water vapor compressor.
[0012] Preferably, the system further comprises a drain pipe and a drain stop valve, the drain pipe is connected to the liquid collecting tank, and the drain stop valve is arranged on the drain pipe.
[0013] Preferably, a stop valve is further provided on the external water pipe, the liquid collecting tank water supply pipe and / or the flash tank water supply pipe.
[0014] Preferably, a water spray pump is further provided on the flash tank water supply pipe.
[0015] Preferably, the liquid collecting tank and the evaporator are connected via an expansion pipe, and an expansion valve is provided on the expansion pipe.
[0016] Preferably, a stop valve is further provided on the expansion pipe.
[0017] Preferably, an expansion valve and / or a stop valve is provided on the first bypass pipe.
[0018] Preferably, a circulation pump and / or a stop valve is provided on the second bypass pipe.
[0019] Compared with the prior art, the present invention has the following advantages:
[0020] First, the present application uses natural working fluid water as the circulating working fluid. Natural working fluid water has the characteristics of being easy to obtain, low in cost, stable in chemical properties, and safe. By using natural working fluid water as the circulating working fluid, the operation of the system is economical, safe, and environmentally friendly.
[0021] This time, by using a variety of water replenishment subsystems, this application can effectively reduce the exhaust superheat of the compressor, improve the performance of the water vapor compressor, reduce the energy consumption during the operation of the system, and achieve the effect of energy saving and emission reduction. In addition, by using different water replenishment subsystems in combination, the system can be made more operable in actual use.
[0022] Furthermore, the present invention can ensure the safe and stable operation of the system through the operation of the first heat pump working medium circulation loop and the second heat pump working medium circulation loop, while reducing the energy consumption during the operation of the system as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present application may be better understood by describing the embodiments of the present application in conjunction with the accompanying drawings, in which:
[0024] Figure 1 This is a schematic diagram of the structure of a water supply system based on a heat pump system in the present application.
[0025] Description of Figure Numbers:
[0026] 110. Evaporator; 120. Flash tank; 130. Steam compressor; 140. Condenser; 150. Liquid collecting tank; 152. Expansion pipe; 154. Expansion valve; 210. External water pipe; 220. Liquid collecting tank water supply pipe; 230. Flash tank water supply pipe; 232. Water spray pump; 240. Compression chamber water supply pipe; 250. Stop valve; 260. Drain pipe; 262. Drain stop valve; 310. First bypass pipe; 320. Second bypass pipe; 322. Circulation pump. DETAILED DESCRIPTION
[0027] Unless otherwise defined, the technical terms or scientific terms used in this specification and claims shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.
[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] This embodiment relates to a Figure 1 The water supply system based on the heat pump system is shown.
[0033] In a specific embodiment, the water supply system includes a first heat pump working medium circulation loop, an external water replenishment subsystem, a liquid collection tank water replenishment subsystem and a flash tank water replenishment subsystem.
[0034] The first heat pump working medium circulation loop includes an evaporator 110, a flash tank 120, a water vapor compressor 130, a condenser 140 and a liquid collecting tank 150. The evaporator 110, the flash tank 120, the water vapor compressor 130, the condenser 140 and the liquid collecting tank 150 are sequentially connected according to the flow direction of the natural working medium water to form the first heat pump working medium circulation loop. In some embodiments, the liquid collecting tank 150 and the evaporator 110 are connected through an expansion pipe 152, and an expansion valve 154 is provided on the expansion pipe 152. A stop valve 250 may be further provided on the expansion pipe 152.
[0035] The water supply system based on the heat pump system involved in this embodiment uses natural working medium water as the circulating working medium of the system, effectively recovers waste heat from the waste heat source, and provides high-temperature outlet water for users, and the outlet water temperature can reach above 120° C. At the same time, the use of natural working medium water as the circulating working medium of the system avoids the destructive effect of chlorofluorocarbon artificial synthetic working medium on the environment, effectively protects the environment, and achieves the effect of energy saving, emission reduction and environmental protection.
[0036] When the first heat pump working medium circulation loop as shown in the figure works, the natural working medium water of the heat pump is heated in the evaporator 110 to become a gas-liquid mixture or complete water vapor, and flows into the flash tank 120. Subsequently, the flashed water vapor flows into the water vapor compressor 130 and is compressed into high-temperature and high-pressure water vapor. The high-temperature and high-pressure water vapor releases heat in the condenser 140 to become condensate. After the condensate flows into the liquid collecting tank 150, it flows through the expansion valve 154 through the expansion pipe 152 to expand, cool and reduce pressure, and then flows into the evaporator 110. The first heat pump working medium circulation loop can realize the function of taking heat from the heat source to the high-temperature end. However, if the natural working medium water in the evaporator 110 is not completely heated to a gaseous state, it is easy to be stored in the flash tank 120 in the form of gas-liquid two-phase, which will cause insufficient natural working medium water flow in the system over time.
[0037] In the embodiment shown in the figure, water replenishment of the water supply system based on the heat pump system can be achieved through an external water replenishment subsystem, a liquid collection tank water replenishment subsystem and a flash tank water replenishment subsystem.
[0038] The external water replenishment subsystem includes an external water pipe 210 , which is connected to the water vapor compressor 130 .
[0039] The liquid collecting tank water replenishment subsystem includes a liquid collecting tank water replenishment pipe 220 , one end of which is connected to the liquid collecting tank 150 , and the other end of which is connected to the water vapor compressor 130 .
[0040] The flash tank water replenishment subsystem includes a flash tank water replenishment pipe 230, one end of which is connected to the flash tank 120, and the other end of which is connected to the water vapor compressor 130. In some embodiments, the flash tank water replenishment pipe 230 is further provided with a water spray pump 232.
[0041] In some embodiments, the external water pipe 210, the liquid collecting tank water supply pipe 220 and / or the flash tank water supply pipe 230 are connected to the compression chamber of the water vapor compressor 130. A stop valve 250 may be further provided on the external water pipe 210, the liquid collecting tank water supply pipe 220 and / or the flash tank water supply pipe 230.
[0042] In the embodiment shown in the figure, the external water pipe 210, the liquid collecting tank water supply pipe 220 and the flash tank water supply pipe 230 are all connected to the compression chamber of the water vapor compressor 130 through the compression chamber water supply pipe 240, and a stop valve 250 is provided on the compression chamber water supply pipe 240.
[0043] When the external water replenishment subsystem is working, the natural working medium water can flow into the compression chamber of the water vapor compressor 130 through the external water pipe 210 and the compression chamber water replenishment pipe 240 in sequence, and the water replenishment amount of the external water replenishment subsystem can be controlled by adjusting the opening of the stop valve 250 arranged on the external water pipe 210 and / or the compression chamber water replenishment pipe 240. External water replenishment has the advantages of low water replenishment temperature, good cooling effect and easy control of water replenishment amount.
[0044] When the liquid collecting tank water replenishment subsystem is working, the natural working medium water in the liquid collecting tank 150 flows into the compression chamber of the water vapor compressor 130 through the liquid collecting tank water replenishment pipe 220 and the compression chamber water replenishment pipe 240. By adjusting the opening of the stop valve 250 arranged on the liquid collecting tank water replenishment pipe 220 and / or the compression chamber water replenishment pipe 240, the water replenishment amount of the liquid collecting tank water replenishment subsystem can be controlled. The natural working medium water of the liquid collecting tank water replenishment subsystem comes from the liquid collecting tank 150, which has high temperature and high pressure, and can realize automatic water replenishment of the water working medium. When the exhaust pressure of the water vapor compressor 130 increases or decreases, the required water replenishment amount also increases or decreases accordingly. At this time, the pressure in the liquid collecting tank 150 will also increase or decrease, forming a self-balance of water replenishment. The liquid collecting tank water replenishment subsystem does not require power equipment to achieve self-balance of water replenishment, and at the same time has the advantages of high water replenishment temperature and large water replenishment amount, which can improve the overall heating capacity and energy efficiency of the system.
[0045] When the flash tank water replenishment subsystem is working, the natural working medium water of the flash tank 120 flows into the compression chamber of the water vapor compressor 130 through the flash tank water replenishment pipe 230 and the compression chamber water replenishment pipe 240. The water replenishment amount of the flash tank water replenishment subsystem can be controlled by adjusting the opening of the stop valve 250 arranged on the flash tank water replenishment pipe 230 and / or the compression chamber water replenishment pipe 240. The water spray pump 232 arranged on the flash tank water replenishment pipe 230 can transport the water of the flash tank 120 to the water vapor compressor 130. The flash tank water replenishment subsystem has the advantages of quick water replenishment amount control and timely water replenishment amount change.
[0046] In some embodiments, the water supply system based on the heat pump system further includes a drain pipe 260 and a drain stop valve 262, the drain pipe 260 is connected to the liquid collecting tank 150, and the drain stop valve 262 is arranged on the drain pipe 260. The drain pipe 260 and the drain stop valve 262 can be used to discharge part of the water medium in the liquid collecting tank 150.
[0047] In some embodiments, the water supply system based on the heat pump system further includes a second heat pump working medium circulation loop, and the second heat pump working medium circulation loop includes a first bypass pipe 310 and a second bypass pipe 320. The two ends of the first bypass pipe 310 are respectively connected to the liquid collecting tank 150 and the flash tank 120, and the two ends of the second bypass pipe 320 are respectively connected to the flash tank 120 and the evaporator 110. The first bypass pipe 310 may be provided with an expansion valve 154 and / or a stop valve 250. The second bypass pipe 320 may be provided with a circulating pump 322 and / or a stop valve 250.
[0048] In the embodiment shown in the figure, when the natural working medium water flow in the first heat pump working medium circulation loop is insufficient, the natural working medium water can be circulated through the second heat pump working medium circulation loop. When the first heat pump working medium circulation loop is working, the stop valve 250 on the first bypass pipe 310 and the second bypass pipe 320 is opened, and the stop valve 250 provided on the expansion pipe 152 between the liquid collecting tank 150 and the evaporator 110 is closed. At this time, the natural working medium water flowing out of the liquid collecting tank 150 flows into the flash tank 120 through the first bypass pipe 310, and then flows into the evaporator 110 through the second bypass pipe 320.
[0049] In such Figure 1 In the water supply system based on the heat pump system shown, the heat pump system mainly includes a first heat pump working fluid circulation loop and a second heat pump working fluid circulation loop. The water replenishment subsystem includes an external water replenishment subsystem, a liquid collecting tank water replenishment subsystem and a flash tank water replenishment subsystem. Whether the first heat pump working fluid circulation loop or the second heat pump working fluid circulation loop is working, the external water replenishment subsystem, the liquid collecting tank water replenishment subsystem and the flash tank water replenishment subsystem can be used in combination as needed. By adopting a multi-cycle and multiple water replenishment method design, the water supply system based on the heat pump system can be adjusted according to the operating status and on-site conditions during actual use, making the water supply system based on the heat pump system more feasible.
[0050] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A water supply system based on a heat pump system, characterized in that: The water supply system includes a heat pump system and a water replenishment system, the heat pump system includes a first heat pump working medium circulation loop, the water replenishment system is used to provide water to the heat pump system, and includes an external water replenishment subsystem, a liquid collection tank water replenishment subsystem and a flash tank water replenishment subsystem; The first heat pump working medium circulation loop comprises an evaporator, a flash tank, a water vapor compressor, a condenser and a liquid collecting tank which are connected in sequence, and the heat pump working medium is water.
2. The water supply system based on the heat pump system according to claim 1, characterized in that: The heat pump system also includes a second heat pump working medium circulation loop, which includes a first bypass pipe and a second bypass pipe, wherein both ends of the first bypass pipe are respectively connected to the liquid collecting tank and the flash tank, and both ends of the second bypass pipe are respectively connected to the flash tank and the evaporator.
3. The water supply system based on the heat pump system according to claim 1 or 2, characterized in that: The external water replenishment subsystem includes an external water pipe, which is connected to the water vapor compressor; The liquid collecting tank water replenishment subsystem comprises a liquid collecting tank water replenishment pipe, one end of which is connected to the liquid collecting tank, and the other end of which is connected to the water vapor compressor; The flash tank water replenishment subsystem comprises a flash tank water replenishment pipe, one end of which is connected to the flash tank, and the other end of which is connected to the water vapor compressor.
4. The water supply system based on the heat pump system according to claim 3, characterized in that: The external water pipe, the liquid collecting tank water supply pipe and / or the flash tank water supply pipe are communicated with the compression chamber of the water vapor compressor.
5. The water supply system based on the heat pump system according to claim 1, characterized in that: The water supply system based on the heat pump system further includes a drain pipe and a drain stop valve, the drain pipe is connected to the liquid collecting tank, and the drain stop valve is arranged on the drain pipe.
6. The water supply system based on the heat pump system according to claim 3, characterized in that: The external water pipe, the liquid collecting tank water supply pipe and / or the flash tank water supply pipe are further provided with a stop valve.
7. The water supply system based on the heat pump system according to claim 1, characterized in that: A water spray pump is further arranged on the flash tank water supply pipe.
8. The water supply system based on the heat pump system according to claim 2, characterized in that: The liquid collecting tank and the evaporator are connected via an expansion pipe, and an expansion valve is arranged on the expansion pipe.
9. The water supply system based on the heat pump system according to claim 8, characterized in that: The expansion pipe is further provided with a stop valve.
10. The water supply system based on the heat pump system according to claim 8, characterized in that: The first bypass pipe is provided with an expansion valve and / or a stop valve; The second bypass pipe is provided with a circulation pump and / or a stop valve.