Heat pump system for recovering waste heat of cooling water of power plant

Abstract

The utility model provides a heat pump system for recovering waste heat of cooling water of a power plant, which comprises a heat pump main body, an evaporator is arranged in the heat pump main body, a heat dissipation assembly for dissipating heat of the evaporator is further arranged in the heat pump main body, a driving assembly is inserted in the side wall of the heat pump main body in a penetrating manner, and the driving assembly comprises a driving piece. The driving part is detachably connected to the side wall of the heat pump body and fixedly connected with a bearing rod, the other end of the bearing rod is fixedly connected to the inner side wall of the heat pump body, the side wall of the bearing rod is movably connected with a movable block, the bottom end of the movable block is fixedly connected with a heat dissipation assembly, and a plurality of guide rods for guiding the heat dissipation assembly are inserted into the inner side wall of the shell in a penetrating mode. A plurality of sliding grooves are formed in the side wall of the bearing rod, the movable block reciprocates in the sliding grooves, the device is guided through the sliding grooves, excessive collision caused by a gear and a rack is not needed, and therefore noise pollution is reduced, equipment abrasion is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, and in particular to a heat pump system for recovering waste heat from power plant cooling water. Background Technology

[0002] A heat pump system for recovering waste heat from power plant cooling water is a system that uses heat pump technology to recover and utilize the waste heat from power plant cooling water that would otherwise be discharged into the environment.

[0003] Patent CN221259143U discloses an adjustable heat pump for a high-temperature wastewater heat recovery system. The pump includes a housing containing an evaporator. An adjustable mechanism connects the housing to a fan for cooling the evaporator. The adjustable mechanism includes a motor, a rotating rod, a rotating gear, and a fixed rack. Vertically distributed fixed racks are fixed to the inner wall of the housing. A motor is mounted on the outer wall of the fan, and the motor output is connected to the rotating rod. A rotating gear meshing with the fixed rack is fixed to the end of the rotating rod furthest from the motor. This adjustable heat pump in the high-temperature wastewater heat recovery system uses a combination of rotating gears and fixed racks to drive the motor and fan in reciprocating motion. The reaction force drives the fan in longitudinal reciprocating motion. This configuration provides good adjustment, ensuring the fan evenly aligns with the evaporator, thus enhancing the equipment's heat dissipation efficiency. However, the high wear of the gear and rack engagement is detrimental to the long-term use of the equipment. Furthermore, the gear and rack generate significant noise during transmission, causing noise pollution.

[0004] Therefore, it is necessary to provide a new heat pump system for recovering waste heat from power plant cooling water to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a heat pump system for recovering waste heat from power plant cooling water.

[0006] The heat pump system for recovering waste heat from power plant cooling water provided by this utility model includes: a heat pump body, an evaporator inside the heat pump body, a heat dissipation component inside the heat pump body for dissipating heat from the evaporator, and a drive component for reciprocating motion of the heat dissipation component inserted through the side wall of the heat pump body.

[0007] The drive assembly includes a drive component, which is detachably connected to the side wall of the heat pump body. A receiving rod is fixedly connected to the output end of the drive component. The other end of the receiving rod is fixedly connected to the inner side wall of the heat pump body on the side away from the drive component. A movable block is movably connected to the side wall of the receiving rod. A heat dissipation component is fixedly connected to the bottom end of the movable block. Multiple guide rods for guiding the heat dissipation component are inserted through the inner side wall of the outer shell. Multiple sliding grooves are opened on the side wall of the receiving rod, and the movable block reciprocates within the multiple sliding grooves.

[0008] Preferably, the heat dissipation assembly includes a housing, with multiple guide rods passing through the top and bottom of the housing. A second drive motor is detachably connected to the inner wall of the housing on the side away from the evaporator. A rotating rod is fixedly connected to the output end of the second drive motor, and multiple fan blades are inserted through the side wall of the rotating rod.

[0009] Preferably, the plurality of grooves are spirally arranged with the central axis of the receiving rod as the reference axis, and the spiral directions of the plurality of grooves are opposite.

[0010] Preferably, the heat pump body further includes an inlet pipe, a water pump, a condenser, a filter, an expansion valve, a compressor, and an outlet pipe, which are connected sequentially via pipes.

[0011] Preferably, the driving component includes a drive motor, which is detachably connected to the inner wall of the heat pump body, and the output end of the drive motor is welded to the receiving rod.

[0012] Preferably, the heat pump body has an air inlet and a heat dissipation hole on its side wall. The air inlet and the heat dissipation hole are arranged opposite to each other, and the longitudinal section of the heat dissipation hole is trapezoidal.

[0013] Compared with related technologies, the heat pump system for recovering waste heat from power plant cooling water provided by this utility model has the following beneficial effects:

[0014] This utility model provides a heat pump system for recovering waste heat from power plant cooling water. In specific implementation, a drive component drives a receiving rod to rotate. Under the action of a guide rod, a movable block performs periodic reciprocating motion within multiple sliding grooves, thereby driving the heat dissipation component to reciprocate. This method of driving the heat dissipation component to perform periodic reciprocating sliding not only eliminates the need to periodically change the rotation direction of the drive component's output end, but also, compared to gears and racks, this device uses multiple sliding grooves for guidance, avoiding excessive collisions like gears and racks, thus reducing noise pollution, reducing equipment wear, and improving the service life of the device. At the same time, it simplifies the control method of the drive component, allowing it to rotate in one direction, further extending the service life of the drive component. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model;

[0016] Figure 2 A top view of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model.

[0017] Figure 3 A partial structural schematic diagram of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model;

[0018] Figure 4 A schematic diagram of the drive component structure of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model;

[0019] Figure 5 A schematic cross-sectional view of the heat dissipation component of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model.

[0020] The following are the labeling elements in the diagram: 1. Heat pump body; 2. Evaporator; 3. Heat dissipation assembly; 301. Outer shell; 302. Drive motor II; 303. Rotating rod; 304. Fan blades; 4. Drive assembly; 401. Drive motor I; 402. Supporting rod; 403. Movable block; 404. Guide rod; 405. Slide groove; 5. Water inlet pipe; 6. Water pump; 7. Condenser; 8. Filter; 9. Expansion valve; 10. Compressor; 11. Water outlet pipe; 12. Air inlet; 13. Heat dissipation hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 — Figure 5 ,in, Figure 1 A schematic diagram of the overall structure of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model; Figure 2 A top view of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model. Figure 3 A partial structural schematic diagram of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model; Figure 4 A schematic diagram of the drive component structure of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model; Figure 5 A schematic cross-sectional view of the heat dissipation component of the heat pump system for recovering waste heat from power plant cooling water provided by this utility model.

[0023] In practical implementation, a heat pump system for recovering waste heat from power plant cooling water has the following structure: Figure 1 — Figure 5 As shown, it includes: a heat pump body 1, an evaporator 2 inside the heat pump body 1, a heat dissipation component 3 inside the heat pump body 1 for dissipating heat from the evaporator 2, and a drive component 4 for driving the heat dissipation component 3 to reciprocate through the side wall of the heat pump body 1.

[0024] The drive assembly 4 includes a drive component, which is bolted to the side wall of the heat pump body 1. A receiving rod 402 is welded to the output end of the drive component. The other end of the receiving rod 402 is rotatably connected to the inner side wall of the heat pump body 1 away from the drive component through a bearing seat. A movable block 403 is slidably connected to the side wall of the receiving rod 402. A heat dissipation assembly 3 is welded to the bottom end of the movable block 403 through a connecting rod. Multiple guide rods 404 are inserted through the inner side wall of the outer shell 301 to guide the heat dissipation assembly 3.

[0025] It should be noted that the side wall of the receiving rod 402 is provided with multiple sliding grooves 405. The multiple sliding grooves 405 are all spirally arranged with the central axis of the receiving rod 402 as the reference axis. The movable block 403 is in contact with the sliding grooves 405, and the spiral directions of the multiple sliding grooves 405 are opposite. When the evaporator 2 is cooled, the driving component is activated, and the driving component drives the receiving rod 402 to rotate. At this time, under the action of the guide rod 404, the sliding grooves 405 drive the movable block 403 to slide horizontally. When the movable block 403 slides to the beginning or end of one of the sliding grooves 405, it will enter another sliding groove 405 under the guidance of the sliding groove 405, so that the movable block 403 slides horizontally in the opposite direction along the other sliding groove 405. This realizes the reciprocating sliding of the heat dissipation component 3. This method of driving the heat dissipation component 3 to perform periodic reciprocating sliding not only eliminates the need to periodically change the rotation direction of the output end of the driving component, but also improves the service life of the driving component and simplifies the control method of the driving component.

[0026] The heat dissipation assembly 3 includes a housing 301, and multiple guide rods 404 pass through the top and bottom of the housing 301. A second drive motor 302 is bolted to the inner wall of the housing 301 on the side away from the evaporator 2. A rotating rod 303 is welded to the output end of the second drive motor 302. Multiple fan blades 304 are inserted through the side wall of the rotating rod 303, and the multiple fan blades 304 are facing the evaporator 2.

[0027] It should be noted that the outer casing 301 has multiple through slots on its side wall for gas to pass through. The fan blades 304 are driven to rotate by the drive motor 302, thereby dissipating heat from the evaporator 2.

[0028] The heat pump body 1 also includes an inlet pipe 5, a water pump 6, a condenser 7, a filter 8, an expansion valve 9, a compressor 10, and an outlet pipe 11. The inlet pipe 5, the water pump 6, the condenser 7, the filter 8, the expansion valve 9, the evaporator 2, the compressor 10, and the outlet pipe 11 are connected in sequence through pipes.

[0029] It should be noted that during waste heat recovery from power plant cooling water, the cooling water enters the heat pump system through inlet pipe 5. Inlet pipe 5 serves as the initial channel for the entire process, transporting the cooling water to be treated to subsequent equipment. Pump 6 is activated, providing power for the flow of cooling water. It draws the cooling water from inlet pipe 5 and delivers it to condenser 7 at a certain pressure, ensuring smooth flow of the cooling water within the system. After entering condenser 7, the cooling water exchanges heat with the refrigerant inside. Condenser 7 is typically made of stainless steel and has an "S"-shaped distribution; this design increases... This design increases the contact area with cooling water while reducing the footprint, enabling more efficient heat transfer. During this process, waste heat from the cooling water is transferred to the refrigerant, raising its temperature. The refrigerant flowing from condenser 7 then enters filter 8. Filter 8 effectively filters impurities and wastewater from the refrigerant, ensuring the normal operation of subsequent equipment. Existing filtration equipment can be used for filter 8 to ensure filtration efficiency. After filtration, the refrigerant passes through expansion valve 9, which throttles and reduces the pressure and temperature of the refrigerant, preparing it for entry into evaporator 2 for evaporation. The heat pump creates conditions for heat absorption. The depressurized refrigerant enters the evaporator 2, where it exchanges heat with the outside air. At this time, the heat dissipation assembly 3 starts working, with the drive motor 302 driving the rotating rod 303 and fan blades 304 to rotate, accelerating airflow and drawing outside cold air into the heat pump body 1 through the air inlet 12. As the cold air passes through the evaporator 2, it exchanges heat with the refrigerant, absorbing heat and rising in temperature. It then exits through the trapezoidal heat dissipation holes 13. During this process, the refrigerant absorbs heat from the outside air, further reducing its temperature and achieving cooling of the evaporator 2. At the same time, heat transfer is completed. Simultaneously, the drive motor 401 drives the receiving rod 402 to rotate. Under the action of the guide rod 404, the movable block 403 will slide back and forth horizontally along the slide groove 405, thereby driving the heat dissipation component 3 to slide back and forth periodically, expanding the heat dissipation range, improving the heat dissipation effect, and achieving the effect of auxiliary heat dissipation. After a series of heat exchange and processing, the refrigerant returns to the compressor 10 to complete a complete refrigeration cycle. The cooling water after waste heat recovery treatment is discharged from the heat pump system through the outlet pipe 11 for further use or treatment.

[0030] The driving component includes a drive motor 401, which is bolted to the inner wall of the heat pump body 1, and the output end of the drive motor is welded to the receiving rod 402.

[0031] The heat pump body 1 has an air inlet 12 and a heat dissipation hole 13 on its side wall. The air inlet 12 and the heat dissipation hole 13 are arranged opposite to each other, and the longitudinal section of the heat dissipation hole 13 is trapezoidal.

[0032] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A heat pump system for recovering waste heat from cooling water of a power plant, characterized in that, It includes a heat pump body (1), an evaporator (2) is provided inside the heat pump body (1), a heat dissipation component (3) is also provided inside the heat pump body (1) to dissipate heat from the evaporator (2), and a drive component (4) for driving the heat dissipation component (3) to reciprocate is inserted through the side wall of the heat pump body (1). The drive assembly (4) includes a drive member, which is detachably connected to the side wall of the heat pump body (1). The output end of the drive member is fixedly connected to a receiving rod (402). The other end of the receiving rod (402) is movably connected to the inner side wall of the heat pump body (1) away from the drive member. The side wall of the receiving rod (402) is movably connected to a movable block (403). The bottom end of the movable block (403) is fixedly connected to a heat dissipation assembly (3). Multiple guide rods (404) for guiding the heat dissipation assembly (3) are inserted through the inner side wall of the outer shell (301). Multiple sliding grooves (405) are opened on the side wall of the receiving rod (402). The movable block (403) reciprocates within the multiple sliding grooves (405).

2. The heat pump system for recovering waste heat from power plant cooling water according to claim 1, characterized in that, The heat dissipation assembly (3) includes a housing (301), and multiple guide rods (404) pass through the top and bottom of the housing (301). A second drive motor (302) is detachably connected to the inner wall of the housing (301) away from the evaporator (2). A rotating rod (303) is fixedly connected to the output end of the second drive motor (302). Multiple fan blades (304) are inserted through the side wall of the rotating rod (303).

3. The heat pump system for recovering waste heat from power plant cooling water according to claim 2, characterized in that, The multiple grooves (405) are all spirally arranged with the central axis of the receiving rod (402) as the reference axis, and the spiral directions of the multiple grooves (405) are opposite.

4. The heat pump system for recovering waste heat from power plant cooling water according to claim 3, characterized in that, The heat pump body (1) also includes an inlet pipe (5), a water pump (6), a condenser (7), a filter (8), an expansion valve (9), a compressor (10), and an outlet pipe (11). The inlet pipe (5), water pump (6), condenser (7), filter (8), expansion valve (9), evaporator (2), compressor (10), and outlet pipe (11) are connected in sequence through pipes.

5. The heat pump system for recovering waste heat from power plant cooling water according to claim 4, characterized in that, The driving component includes a drive motor (401), which is detachably connected to the inner wall of the heat pump body (1), and the output end of the drive motor is welded to the receiving rod (402).

6. The heat pump system for recovering waste heat from power plant cooling water according to claim 5, characterized in that, The heat pump body (1) has an air inlet (12) and a heat dissipation hole (13) on its side wall. The air inlet (12) and the heat dissipation hole (13) are arranged opposite to each other, and the longitudinal section of the heat dissipation hole (13) is trapezoidal.

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