A bearing shell cooling device

Abstract

The utility model discloses a kind of bearing bush cooling devices, it is related to pump station cooling system technical field, including host computer pump cooling unit, bearing bush cooling unit, intelligent control system, the bearing bush cooling unit includes gas-liquid separator, compressor, condenser, liquid accumulator, drying filter, liquid mirror, expansion valve and evaporator sequentially through pipeline connection, form closed refrigeration cycle loop, exhaust pipe on the outlet of compressor is provided with pressure sensor, temperature sensor, pressure controller, the air inlet pipe and exhaust pipe of the compressor are respectively provided with third pressure gauge, the pressure controller is electrically connected with pressure sensor, third pressure gauge, realizes winter system pressure intelligent regulation by pressure controller, not only effectively avoid the equipment failure caused by pressure anomaly, also greatly improve the operation efficiency of system in winter harsh environment, energy saving, ensure equipment operation safety.

Description

Technical Field

[0001] This utility model relates to the field of pump station cooling system technology, and in particular to a bearing cooling device suitable for low-temperature environments. Background Technology

[0002] As auxiliary equipment in the operation of the main unit in pumping station projects, bearing coolers and circulating water supply devices are indispensable for ensuring the safe operation of water pumps and motors. Chinese patent CN201747803U discloses a bearing cooler, which has advantages such as uniform temperature and low power consumption. However, it often faces many challenges in winter operation: When the bearing cooler is running in winter, the high pressure of the system will decrease due to the good air cooling effect, while the operating water temperature of the pumping station is significantly higher than the ambient temperature. Consequently, the low pressure of the compressor will be higher, resulting in an abnormal operating condition of "low high pressure and high low pressure". This interferes with the normal intake and exhaust process of the compressor, not only reducing cooling efficiency, but also easily causing equipment failure, increasing energy loss, and thus affecting the operational stability of the bearing cooler compressor system. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems and provide a bearing cooling device that can monitor system pressure changes in real time, improve the reliability of operation in winter, enhance intelligent control, reduce energy consumption, and ensure the safe and efficient operation of the pump station main unit in cold regions.

[0004] To achieve the above technical objectives and requirements, the technical solution adopted by this utility model is as follows: a bearing cooling device, comprising a main pump cooling unit, a bearing cooling unit, and an intelligent control system. The bearing cooling unit and the main pump cooling unit are connected by a return water pipe and an outlet water pipe, respectively, forming a cooling water circulation loop. The bearing cooling unit includes a gas-liquid separator, a compressor, a condenser, a liquid receiver, a dryer filter, a sight glass, an expansion valve, and an evaporator, connected in sequence by pipes, forming a closed refrigeration circulation loop. A pressure sensor, a temperature sensor, and a pressure controller are installed on the exhaust pipe at the compressor outlet. A third pressure gauge is installed on the compressor's inlet pipe and exhaust pipe, respectively. The pressure controller is electrically connected to the pressure sensor and the third pressure gauge, and is used to regulate and control the pressure based on the pressure signal detected by the pressure sensor. The intelligent control system is electrically connected to the temperature sensor, and is used to control the equipment to enter an anti-freeze operation state or to execute a fault warning based on the temperature data.

[0005] Preferably, the outlet of the main pump cooling unit is connected to one end of the return water pipe. The cooling water is transported to the inlet of the bearing cooling unit through the return water pipe. After heat exchange and cooling are completed inside the bearing cooling unit, the water flows from the outlet of the bearing cooling unit into the outlet pipe and flows back to the cold water inlet of the main pump cooling unit, forming a closed cooling water circulation loop.

[0006] Preferably, the water outlet pipe is provided with a third gate valve, a second thermometer, a second pressure gauge, a second shock absorber, a fourth gate valve, a vent valve, a fifth gate valve, and a safety valve in sequence from the upper water outlet of the bearing cooling unit to the end near the main pump cooling unit, and the safety valve is located at the end of the water outlet pipe.

[0007] Preferably, the return water pipe is provided with a first gate valve, a filter, a booster pump, a first shock absorber pipe, a first pressure gauge, a first thermometer, and a second gate valve in sequence from one end near the main pump cooling unit to one end of the bearing cooling unit. A water supply branch pipe is provided at the beginning of the return water pipe, and an expansion tank and a water supply valve are provided on the water supply branch pipe.

[0008] Preferably, a drain valve is provided on one side of the first shock absorber pipe on the return water pipe, a connecting pipe is provided between the return water pipe and the outlet water pipe, and a sixth gate valve is provided on the connecting pipe.

[0009] Preferably, the pressure controller presets a high-pressure threshold and a low-pressure threshold. When the system pressure is lower than the low-pressure threshold, the condenser fan stops running; when the system pressure is higher than the high-pressure threshold, the condenser fan starts running.

[0010] Preferably, the intelligent control system presets an antifreeze temperature threshold. When the outdoor ambient temperature is lower than the antifreeze temperature threshold and the pump station is in standby mode, the system automatically engages in antifreeze operation. During antifreeze operation, it prevents the water inside the system cooler and pipes from freezing according to the set operating frequency. When the water temperature in the pipeline is detected to be lower than the freezing point threshold, an alarm is issued.

[0011] Preferably, the bearing cooling unit is electrically connected to the intelligent control system, and the intelligent control system adjusts the cooling capacity of the bearing cooling unit according to the water temperature data collected by the first thermometer and the second thermometer.

[0012] Compared with the traditional structure, the beneficial effects of this utility model are: 1. This utility model has a simple structure and reasonable design. By designing a pressure controller, it realizes intelligent adjustment of system pressure in winter, which not only effectively avoids equipment failure caused by abnormal pressure, but also greatly improves the operating efficiency of the system in harsh winter environments. Furthermore, because pressure adjustment reduces the running time of the condenser fan, it improves the operating efficiency of the compressor, saves energy, and ensures the safe operation of the equipment. 2. The intelligent control system enables automated control, fault warning, and emergency protection, reducing the need for manual intervention. When the outdoor ambient temperature is lower than the sampling values ​​for low-temperature protection, the system will automatically engage anti-freeze operation. During anti-freeze operation, the system will prevent the water inside the cooler and pipes from freezing according to the set operating frequency, thus avoiding damage to the equipment due to ice expansion. At the same time, the intelligent control system will also automatically adjust the operating status of the water pump according to temperature changes, minimizing energy consumption while ensuring the anti-freeze effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Main pump cooling unit, 2. Outlet pipe, 3. Safety valve, 4. Fifth gate valve, 5. Vent valve, 6. Fourth gate valve, 7. Second shock absorber pipe, 8. Second pressure gauge, 9. Second thermometer, 10. Sixth gate valve, 11. Third gate valve, 12. Expansion valve, 13. Sight glass, 14. Dryer filter, 15. Liquid receiver, 16. Gas-liquid separator, 17. Electrical control box, 18. Compressor, 19. Pressure controller, 20. Third pressure gauge, 21. Pressure sensor, 22. Temperature sensor, 23. Condenser, 24. Evaporator, 25. Booster pump, 26. Filter, 27. Return water pipe, 28. Make-up water valve, 29. Expansion tank, 30. Drain valve. Detailed Implementation

[0014] The present invention will be further described below.

[0015] See attached document Figure 1 A bearing cooling device includes a main pump cooling unit 1, a bearing cooling unit, and an intelligent control system. The bearing cooling unit and the main pump cooling unit 1 are connected by a return water pipe 27 and an outlet water pipe 2, respectively, forming a cooling water circulation loop. The bearing cooling unit comprises a gas-liquid separator 16, a compressor 18, a condenser 23, a liquid receiver 15, a dryer filter 14, a sight glass 13, an expansion valve 12, and an evaporator 24, connected sequentially by pipes, forming a closed refrigeration circulation loop. A pressure sensor 21, a temperature sensor 22, and a pressure controller 19 are installed on the exhaust pipe of the compressor 18. A third pressure gauge 20 is installed on both the intake and exhaust pipes of the compressor 18. The pressure controller 19 is electrically connected to the pressure sensor 21 and the third pressure gauge 20, and is used to regulate and control the pressure based on the pressure signal detected by the pressure sensor 21. The intelligent control system is electrically connected to the temperature sensor 22, and is used to control the equipment to enter an anti-freeze operation state or to execute a fault warning based on temperature data.

[0016] The water outlet pipe 2 is provided with a third gate valve 11, a second thermometer 9, a second pressure gauge 8, a second shock absorber 7, a fourth gate valve 6, a vent valve 5, a fifth gate valve 4, and a safety valve 3 in sequence from the upper water outlet of the bearing cooling unit to the end near the main pump cooling unit 1. The safety valve 3 is located at the end of the water outlet pipe 2.

[0017] The return water pipe 27 is provided with a first gate valve, a filter 26, a booster pump 25, a first shock absorber pipe, a first pressure gauge, a first thermometer, and a second gate valve in sequence from one end near the main pump cooling unit 1 to one end of the bearing cooling unit. A water supply branch pipe is provided at the beginning of the return water pipe 27, and an expansion tank 29 and a water supply valve 28 are provided on the water supply branch pipe.

[0018] A drain valve 30 is provided on one side of the first shock absorber pipe on the return water pipe 27. A connecting pipe is provided between the return water pipe 27 and the outlet pipe 2. A sixth gate valve 10 is provided on the connecting pipe.

[0019] The pressure controller 19 presets a high-pressure threshold and a low-pressure threshold. When the system pressure is lower than the low-pressure threshold, it controls the condenser fan to stop running; when the system pressure is higher than the high-pressure threshold, it controls the condenser fan to start running.

[0020] The intelligent control system presets an antifreeze temperature threshold. When the outdoor ambient temperature is lower than the antifreeze temperature threshold and the pump station is in standby mode, the system automatically starts antifreeze operation. During antifreeze operation, it prevents the water inside the system cooler and pipes from freezing according to the set operating frequency. When the water temperature in the pipeline is detected to be lower than the freezing point threshold, an alarm is issued.

[0021] In practice, after the main pump unit is started, the pipeline booster pump 25 operates at the rated frequency. Cooling water flows out from the main pump cooling unit 1, enters the filter 26 through the first gate valve of the return water pipe 27, filters out impurities, and is then pressurized by the pipeline booster pump 25. It then passes through the first shock absorber pipe, the first pressure gauge, the first thermometer, and the second gate valve in sequence, and enters the bearing cooling unit. Inside the bearing cooling unit, the cooling water exchanges heat with the refrigerant. After the temperature drops, it flows out from the outlet and enters the outlet pipe 2. It then passes through the third gate valve 11, the second thermometer 9, the second pressure gauge 8, the second shock absorber pipe 7, the fourth gate valve 6, the vent valve 5, the fifth gate valve 4, and the safety valve 3 in sequence, and returns to the main pump cooling unit 1. After absorbing heat, it re-enters the circulation.

[0022] During operation, the pressure controller 19 monitors the system pressure in real time. If the high pressure is lower than the low pressure threshold in winter, the pressure controller 19 can automatically shut off the condenser fan. If the high pressure is higher than the high pressure threshold, the condenser fan will be turned on to reduce the pressure. Once the pressure drops to the set pressure, the fan will be stopped. This precise pressure control ensures that the bearing cooler operates within the safe cooling pressure range, enabling the bearing cooling device to maintain efficient and stable operation even in winter.

[0023] In standby mode, the system is put into anti-freeze mode via temperature protection technology: when the outdoor ambient temperature falls below the sampling values ​​for low-temperature protection, the system automatically activates anti-freeze operation. During anti-freeze operation, it prevents the water inside the system cooler and pipes from freezing according to the set operating frequency, avoiding damage to the equipment due to ice expansion. Simultaneously, the intelligent control system automatically adjusts the water pump's operating status based on temperature changes, minimizing energy consumption while ensuring effective anti-freeze protection. Furthermore, the system has a fault warning function; once abnormal equipment temperature is detected, the system immediately issues an alarm and takes corresponding emergency measures, reminding operators to investigate the cause. This comprehensive temperature protection mechanism makes the circulating water supply device safer and more reliable during winter operation.

[0024] The above embodiments of this utility model are merely examples to clearly illustrate this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent technical solutions also fall within the scope of this utility model, and the patent protection scope of this utility model should be defined by each claim.

Claims

1. A bearing cooling device, comprising a main pump cooling unit (1), a bearing cooling unit, and an intelligent control system, wherein the bearing cooling unit and the main pump cooling unit (1) are connected by a return water pipe (27) and an outlet water pipe (2) respectively, forming a cooling water circulation loop, characterized in that: The bearing cooling unit includes a gas-liquid separator (16), a compressor (18), a condenser (23), a liquid receiver (15), a dryer filter (14), a sight glass (13), an expansion valve (12), and an evaporator (24) connected in sequence by pipes, forming a closed refrigeration cycle. A pressure sensor (21), a temperature sensor (22), and a pressure controller (19) are installed on the exhaust pipe of the compressor (18). A third pressure gauge (20) is installed on the intake pipe and exhaust pipe of the compressor (18). The pressure controller (19) is electrically connected to the pressure sensor (21) and the third pressure gauge (20) and is used to regulate and control the pressure according to the pressure signal detected by the pressure sensor (21). The intelligent control system is electrically connected to the temperature sensor (22) and is used to control the equipment to enter the anti-freeze operation state or to perform fault warning according to the temperature data.

2. The bearing cooling device according to claim 1, characterized in that: The water outlet pipe (2) is provided with a third gate valve (11), a second thermometer (9), a second pressure gauge (8), a second shock absorber (7), a fourth gate valve (6), a vent valve (5), a fifth gate valve (4), and a safety valve (3) in sequence from the upper water outlet of the bearing cooling unit to the end near the main pump cooling unit (1). The safety valve (3) is located at the end of the water outlet pipe (2).

3. The bearing cooling device according to claim 1, characterized in that: The return water pipe (27) is provided with a first gate valve, a filter (26), a booster pump (25), a first shock absorber pipe, a first pressure gauge, a first thermometer, and a second gate valve in sequence from one end near the main pump cooling unit (1) to one end of the bearing cooling unit. A water supply branch pipe is provided at the beginning of the return water pipe (27), and an expansion tank (29) and a water supply valve (28) are provided on the water supply branch pipe.

4. The bearing cooling device according to claim 1, characterized in that: A drain valve (30) is provided on one side of the first shock absorber pipe on the return water pipe (27). A connecting pipe is provided between the return water pipe (27) and the outlet pipe (2). A sixth gate valve (10) is provided on the connecting pipe.

5. The bearing cooling device according to claim 1, characterized in that: The pressure controller (19) presets a high pressure threshold and a low pressure threshold. When the system pressure is lower than the low pressure threshold, it controls the condenser fan to stop running; when the system pressure is higher than the high pressure threshold, it controls the condenser fan to start running.

6. The bearing cooling device according to claim 1, characterized in that: The intelligent control system presets an antifreeze temperature threshold. When the outdoor ambient temperature is lower than the antifreeze temperature threshold and the pump station is in standby mode, the system automatically starts antifreeze operation. During antifreeze operation, it prevents the water inside the system cooler and pipes from freezing according to the set operating frequency. When the water temperature in the pipeline is detected to be lower than the freezing point threshold, an alarm is issued.

Images