Efficient environmental control device for spray pump cabin

Abstract

The utility model relates to a high-efficiency environmental control device for a spray pump cabin, which is characterized in that exhaust ports of two compressors are respectively connected in parallel through two exhaust stop valves, and then sequentially connected with a first path of a four-way reversing valve through a safety valve and a high-pressure pressure gauge, a second path of the four-way reversing valve is connected with a gas-liquid separator, and the gas-liquid separator is sequentially connected with a low-pressure switch and a low-pressure pressure gauge; a high-low pressure controller is connected between a pipeline behind the high-pressure pressure gauge and a pipeline in front of the low-pressure switch, an energy adjusting pipeline is connected between a pipeline behind the low-pressure switch and a pipeline in front of the high-pressure pressure gauge, and an energy adjusting valve and an energy adjusting electromagnetic valve are sequentially arranged on the energy adjusting pipeline. A third path of the four-way reversing valve is connected with the heat exchanger and then is connected with the evaporator through the liquid reservoir, the liquid adding valve, the two-way drying filter and the expansion valve in sequence, and the evaporator is connected back to a fourth path of the four-way reversing valve. The device can adjust the refrigeration flow to meet the requirement of the limit working condition with the large fluctuation range of the spray pump, and it is ensured that the refrigeration and heat supply environmental control performance is efficient and stable.

Description

Technical Field

[0001] This utility model relates to an environmental control device, specifically a high-efficiency environmental control device for the spray pump room of a spray pump ship. Background Technology

[0002] With the development of shipbuilding technology, high-performance vessels capable of autonomous navigation in complex waters such as shallows and areas with abundant floating debris typically employ jet pump propulsion systems. These systems offer unique advantages such as rapid response, low noise, no risk of grounding, and no propeller damage. The jet pump is generally housed in a separate compartment. Within this compartment, the operation of equipment such as the pump body and motor generates high heat loads, requiring rapid heat dissipation to prevent localized overheating. Existing conventional air conditioning systems using liquid cooling for these compartments cannot efficiently and stably adjust refrigerant flow to match the dynamic load under the extreme conditions of high power consumption, high power output, and frequent operation of the jet pump. This limits the cooling performance of the compartment and can easily affect the safety, stability, and lifespan of the pump body and motor. Furthermore, in low-temperature environments, the slow heating speed of the electric heaters in traditional air conditioning systems also impacts the operation of the jet pump. Summary of the Invention

[0003] This invention provides a high-efficiency environmental control device for the spray pump room of a spray pump ship, which can adjust the cooling flow rate to match the extreme operating conditions where the fluctuation range of the spray pump is large, and ensure efficient and stable cooling and heating environmental control performance.

[0004] The technical solution adopted in this utility model is: a high-efficiency environmental control device for a spray pump compartment, including a compressor, a heat exchanger, an evaporator, a fan, and an electric heater. Its characteristic is that the exhaust ports of the two compressors are connected in parallel via two exhaust shut-off valves. After parallel connection, they are sequentially connected to the first path of a four-way reversing valve via a safety valve and a high-pressure gauge. The second path of the four-way reversing valve is connected to a gas-liquid separator. After the gas-liquid separator, a low-pressure switch and a low-pressure gauge are sequentially connected. After the low-pressure gauge, two paths are connected back to the return gas ports of the two compressors via two return gas shut-off valves. A high-low pressure controller is connected between the pipeline after the pressure gauge and before the low-pressure switch. An adjustable pipeline is connected between the pipeline after the low-pressure switch and before the high-pressure gauge. An adjustable regulating valve and an adjustable solenoid valve are installed in sequence on the adjustable pipeline. The third path of the four-way reversing valve is connected to the heat exchanger, and then sequentially passes through the liquid receiver, liquid adding valve, two-way dryer filter, and expansion valve to the evaporator. The evaporator is connected to the fan and electric heater in sequence to supply air externally. The temperature sensing bulb of the expansion valve is connected between the four-way reversing valve and the gas-liquid separator. The evaporator is connected back to the fourth path of the four-way reversing valve.

[0005] The heat exchanger is a water-fluorine coaxial heat exchanger.

[0006] The heat exchanger is a titanium tube water-fluorine coaxial heat exchanger.

[0007] The heat exchanger is connected to cooling water inlet and outlet pipes. A seawater filter, a water pressure controller with a water pressure gauge, and an antifreeze temperature sensor are installed sequentially on the cooling water inlet pipe; a water pressure gauge is installed on the cooling water outlet pipe.

[0008] The evaporator is a gas-fluorine finned heat exchanger.

[0009] The compressor is a fully enclosed compressor.

[0010] The advantages of this utility model are:

[0011] 1. It uses fluorinated refrigerant, which has the advantages of large latent heat of phase change, low adiabatic index, high efficiency of phase change cycle, non-corrosiveness, non-flammability, low pressure stability, high pressure high compression efficiency, and excellent chemical stability. It is suitable for safe, environmentally friendly and efficient refrigeration in the spray pump chamber.

[0012] 2. When cooling is required, the four-way reversing valve switches between connecting the first and third lines and connecting the second and fourth lines. The two fully enclosed compressors discharge refrigerant to the heat exchanger, and the heat exchanger sends refrigerant to the evaporator. The refrigerant is then circulated by a fan for cooling. The evaporator returns the refrigerant to the two fully enclosed compressors via the fourth line of the four-way reversing valve and the second line. The two fully enclosed compressors can be operated with one in use and one on standby, or both can be operating simultaneously to meet higher power cooling requirements. This is suitable for use under conditions of fluctuating injection pump power. A high-low pressure controller is connected between the high-pressure gauge and the low-pressure switch, and an adjustable pipeline is connected between the low-pressure switch and the high-pressure gauge. By monitoring the high and low pressures and combining the opening and closing of the pipeline valves and the flow rate, the high-low pressure controller can intelligently adjust the refrigerant flow to match the dynamic load and meet the stable cooling and temperature control requirements under extreme conditions of the injection pump.

[0013] 3. When heating is needed, the four-way reversing valve switches to connect the first and fourth lines and the second and third lines. The exhaust gas from the two fully enclosed compressors is directly sent to the evaporator. With the help of the electric heater after the fan, it can be used selectively or in combination to meet the high-efficiency heating in low-temperature environments, avoid damage to the spray pump during low-temperature operation, or ensure the normal and rapid start-up of the spray pump at low temperatures. After the evaporator, the refrigerant is sent to the heat exchanger and then returned to the two fully enclosed compressors by the second and third lines respectively. Its heating control is highly efficient. Attached Figure Description

[0014] Figure 1 This is the electrical diagram of this utility model.

[0015] In the diagram: 1. Fully enclosed compressor; 2. Exhaust shut-off valve; 3. Safety valve; 4. High-pressure gauge; 5. High and low-pressure controller; 6. Four-way reversing valve; 7. Gas-liquid separator; 8. Low-pressure switch; 9. Adjustable regulating valve; 10. Adjustable solenoid valve; 11. Low-pressure gauge; 12. Return gas shut-off valve; 13. Water-fluorine jacketed heat exchanger; 14. Liquid receiver; 15. Liquid filling valve; 16. Two-way dryer filter; 17. Expansion valve; 18. Gas-fluorine finned heat exchanger; 19. Fan; 20. Electric heater; 21. Cooling water inlet pipe; 22. Seawater filter; 23. Water pressure gauge; 24. Water pressure controller; 25. Antifreeze temperature sensor; 26. Cooling water outlet pipe. Detailed Implementation

[0016] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0017] Figure 1 As shown: A high-efficiency environmental control device for a spray pump compartment includes a fully enclosed compressor 1, an exhaust shut-off valve 2, a safety valve 3, a high-pressure gauge 4, a high-low pressure controller 5, a four-way reversing valve 6, a gas-liquid separator 7, a low-pressure switch 8, an adjustable regulating valve 9, an adjustable solenoid valve 10, a low-pressure gauge 11, a return gas shut-off valve 12, a water-fluorine jacketed heat exchanger 13, a liquid receiver 14, a liquid filling valve 15, a two-way drying filter 16, an expansion valve 17, a gas-fluorine finned heat exchanger 18, a fan 19, and an electric heater 20.

[0018] The exhaust ports of the two fully enclosed compressors 1 are connected in parallel via two exhaust shut-off valves 2. After parallel connection, they are connected sequentially via safety valve 3 and high-pressure gauge 4 to the first path of four-way reversing valve 6. The second path of four-way reversing valve 6 is connected to gas-liquid separator 7. After gas-liquid separator 7, they are connected sequentially via low-pressure switch 8 and low-pressure gauge 11. After low-pressure gauge 11, the flow splits into two paths, each connected to the return gas port of the two fully enclosed compressors 1 via two return gas shut-off valves 12. A high-low pressure controller 5 is connected between the pipeline after high-pressure gauge 4 and before low-pressure switch 8. A high-low pressure controller 5 is connected between the pipeline after low-pressure switch 8 and before high-pressure gauge 4. The adjustable pipeline is equipped with an adjustable regulating valve 9 and an adjustable solenoid valve 10 in sequence. The third path of the four-way reversing valve 6 is connected to the water-fluorine jacketed heat exchanger 13. After the water-fluorine jacketed heat exchanger 13, it passes through the liquid storage tank 14, the liquid filling valve 15, the two-way dryer filter 16, and the expansion valve 17 in sequence to the gas-fluorine finned heat exchanger 18. The gas-fluorine finned heat exchanger 18 is connected to the fan 19 and the electric heater 20 in sequence to supply air externally. The temperature sensing bulb of the expansion valve 17 is connected between the four-way reversing valve and the gas-liquid separator. The gas-fluorine finned heat exchanger 18 is connected back to the fourth path of the four-way reversing valve 6.

[0019] The water-fluorine jacketed heat exchanger 13 is connected to cooling water inlet and outlet pipes 21 and 26. The cooling water inlet pipe 21 is equipped with a seawater filter 22, a water pressure controller 24 with a water pressure gauge 23 and an antifreeze temperature sensor 25 in sequence; a water pressure gauge is also installed on the cooling water outlet pipe 26.

Claims

1. A high-efficiency environmental control device for a spray pump compartment, comprising a compressor, a heat exchanger, an evaporator, a fan, and an electric heater, characterized in that: The exhaust ports of the two compressors are connected in parallel via two exhaust shut-off valves. After parallel connection, they are connected sequentially via a safety valve and a high-pressure gauge to the first path of a four-way reversing valve. The second path of the four-way reversing valve is connected to a gas-liquid separator. After the gas-liquid separator, a low-pressure switch and a low-pressure gauge are connected sequentially. After the low-pressure gauge, two paths are connected back to the return gas ports of the two compressors via two return gas shut-off valves. A high-low pressure controller is connected between the pipeline after the high-pressure gauge and before the low-pressure switch. An adjustable pipeline is connected between the pipeline after the low-pressure switch and before the high-pressure gauge. An adjustable regulating valve and an adjustable solenoid valve are installed sequentially on the adjustable pipeline. The third path of the four-way reversing valve is connected to the heat exchanger, and then sequentially via a liquid receiver, a liquid charging valve, a two-way dryer filter, and an expansion valve to the evaporator. The evaporator is connected sequentially via a fan and an electric heater to supply air externally. The temperature sensing bulb of the expansion valve is connected between the four-way reversing valve and the gas-liquid separator. The evaporator is connected back to the fourth path of the four-way reversing valve.

2. The high-efficiency environmental control device for a spray pump compartment according to claim 1, characterized in that: The heat exchanger is a water-fluorine jacketed heat exchanger.

3. The high-efficiency environmental control device for a spray pump compartment according to claim 2, characterized in that: The heat exchanger is a titanium tube water-fluorine coaxial heat exchanger.

4. A high-efficiency environmental control device for a spray pump compartment according to claim 1, 2, or 3, characterized in that: The heat exchanger is connected to cooling water inlet and outlet pipes. A seawater filter, a water pressure controller with a water pressure gauge, and an antifreeze temperature sensor are installed sequentially on the cooling water inlet pipe; a water pressure gauge is installed on the cooling water outlet pipe.

5. The high-efficiency environmental control device for a spray pump compartment according to claim 1, characterized in that: The evaporator is a gas-fluorine finned heat exchanger.

6. The high-efficiency environmental control device for a spray pump compartment according to claim 1, characterized in that: The compressor is a fully enclosed compressor.

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