High-reliability airborne heat management system

Abstract

The utility model relates to a high-reliability airborne heat management system, which is characterized in that a plurality of compression refrigeration systems are connected in parallel to a heat stroke on one side of a heat exchanger, a heat stroke on the other side of the heat exchanger is respectively connected with a liquid return pipe and a liquid supply pipe, and the liquid return pipe is connected by a load, sequentially passes through an electromagnetic valve, a temperature sensor, a pressure sensor, a flow meter, a buffer tank, an electric heater and a liquid supplementing tank and then is divided into two paths; one path is connected with the water tank through a water tank pipeline, the other path is connected to a heat stroke inlet on the other side of the heat exchanger through a temperature sensor, a booster pump, a gas-liquid separator and a proportional valve, and a heat stroke outlet on the other side of the heat exchanger is connected with supplied liquid through a temperature sensor, a pressure sensor and an electromagnetic valve; a bypass pipeline is connected between the liquid return pipe behind the flowmeter and the liquid supply pipe in front of the temperature sensor, and a bypass electromagnetic valve is arranged on the bypass pipeline; and the liquid return pipe in front of the liquid return proportional valve is also connected with a direct cooling pipeline with a proportional valve and a condenser. The system can effectively meet the requirement for pressurized liquid return and liquid supply under the condition that the liquid return and liquid supply flow fluctuation is large, and it is guaranteed that airborne load refrigeration is reliable.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically a highly reliable airborne thermal management system. Background Technology

[0002] In refrigeration systems, the liquid is typically returned from the load to a heat exchanger for heat exchange, and then supplied back to the load for refrigeration. This system is suitable for use in traditional refrigeration applications. However, in airborne loads, the power of the airborne power components fluctuates significantly, resulting in large fluctuations and changes in the liquid return and supply. Even with the addition of water tanks on the return and supply lines, passive water replenishment cannot ensure effective pressurization to meet the load requirements, leading to poor reliability and stability of the refrigeration supply. Summary of the Invention

[0003] This invention provides a highly reliable airborne thermal management system with a simple structure that can effectively meet the needs of pressurized return liquid supply under conditions of large fluctuations in return liquid supply flow, ensuring reliable cooling of airborne loads.

[0004] The technical solution adopted in this utility model is: a highly reliable airborne thermal management system, including a compression refrigeration system and a heat exchanger. Multiple compression refrigeration systems are connected in parallel to one side of the heat exchanger's thermal section. The other side of the heat exchanger's thermal section is connected to a return liquid pipe and a supply liquid pipe. The return liquid pipe is characterized by: the return liquid pipe, connected to the load, sequentially passes through a return liquid solenoid valve, a return liquid primary temperature sensor, a return liquid pressure sensor, a return liquid flow meter, a return liquid buffer tank, an electric heater, and a replenishment tank, then splits into two paths. One path connects to the water tank via a water tank pipeline, which is further divided into a water tank inlet pipe and a water tank outlet pipe. The water tank inlet pipe connects to the upper part of the water tank via a water tank inlet solenoid valve, and the lower part of the water tank connects to the water tank via a water... The water pump on the outlet pipe is pumped to the water tank pipeline. Another path goes through the return liquid secondary temperature sensor, return liquid booster pump, gas-liquid separator, and return liquid proportional valve to the other side of the heat exchanger's hot end inlet. The other side of the heat exchanger's hot end outlet is connected to the supply liquid via a supply liquid temperature sensor, supply liquid pressure sensor, and supply liquid solenoid valve. A bypass pipeline is connected between the return liquid pipe after the return liquid flow meter and the supply liquid pipe before the supply liquid temperature sensor. A bypass solenoid valve is installed on the bypass pipeline. A direct cooling pipeline is also connected to the return liquid pipe before the return liquid proportional valve. The direct cooling pipeline goes through the direct cooling proportional valve and the direct cooling condenser in sequence to the supply liquid pipe at the other side of the heat exchanger's hot end outlet.

[0005] The bypass pipeline is also connected in parallel to a straight pipeline, on which a straight solenoid valve and a straight ball valve are installed in sequence.

[0006] The return liquid booster pump is equipped with a booster solenoid valve before and after the return liquid direction, and a booster shut-off valve, respectively.

[0007] Other return liquid booster pumps are connected in parallel to the return liquid booster pump, and a booster solenoid valve and a booster shut-off valve are respectively installed before and after the return liquid direction of the other return liquid booster pumps.

[0008] The pressure boosting solenoid valve is connected to a front pressure boosting venting connector, and the pressure boosting shut-off valve is connected to a rear pressure boosting venting connector.

[0009] The water tank is equipped with high and low level sensors. The water tank inlet pipe is connected to the water tank at a position higher than the high level sensor, and the water tank outlet pipe is connected to the water tank at a position lower than the low level sensor.

[0010] The top of the water tank is connected to an exhaust pipe.

[0011] The bottom of the water tank is connected to an emptying pipe, and the top of the water tank is connected to a water replenishment pipe.

[0012] The compression refrigeration system includes a compressor, a condenser, a liquid receiver, and an expansion valve.

[0013] The front and rear pressurization and venting connectors are connected to the water tank.

[0014] The beneficial effects of this utility model are as follows: After water replenishment by connecting a water tank to the return liquid pipe, multiple return liquid booster pump pipelines are used, which can serve as multiple pipelines for coordination or backup. Excess return liquid is sent back to the water tank through the venting joints at the front and rear, comprehensively ensuring that the liquid volume sent to the other side of the heat exchanger by the return liquid pipe meets the needs of large-scale load fluctuations, large liquid volume, and high-speed cooling. When there is a small cooling demand, the return liquid pipe is not pressurized, the return liquid booster pump is not turned on, the return liquid proportional valve is closed, and the return liquid is sent to the supply liquid pipe after heat exchange by the air-cooled condenser of the direct cooling pipeline, which meets the needs of small liquid volume or low-speed cooling. A buffer tank is installed on the return liquid pipe to effectively prevent excessive pressure from impacting the system when returning liquid after pressurization start-up. The use of a bypass pipeline to connect the return liquid pipe and the supply liquid pipe can meet the needs of liquid volume, temperature, and pressure regulation between the return liquid and the supply liquid. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structural principle of this utility model.

[0016] In the diagram: 1. Compression refrigeration system; 2. Heat exchanger; 3. Return liquid pipe; 4. Return liquid solenoid valve; 5. Return liquid primary temperature sensor; 6. Return liquid pressure sensor; 7. Return liquid flow meter; 8. Return liquid buffer tank; 9. Electric heater; 10. Make-up tank; 11. Water tank pipeline; 12. Water tank inlet pipe; 13. Water tank inlet solenoid valve; 14. Water tank outlet pipe; 15. Water tank pump; 16. Return liquid secondary temperature sensor; 17. Pre-pressurization solenoid valve; 18. Return liquid booster pump; 19. Booster shut-off valve; 20. Booster venting connector; 21. Gas-liquid separator; 22. Return liquid proportional valve; 23. Supply liquid pipe; 24. Supply liquid temperature sensor; 25. Supply liquid pressure sensor; 26. Supply liquid solenoid valve; 27. Bypass pipeline; 28. Bypass solenoid valve; 29. ​​Straight-through pipeline; 30. Straight-through solenoid valve; 31. Straight-through ball valve; 32. Direct cooling pipeline; 33. Direct cooling proportional valve; 34. Direct cooling condenser; 35. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings and embodiments, provides further details.

[0018] Figure 1 The diagram shows a highly reliable airborne thermal management system, comprising a compression refrigeration system 1, a heat exchanger 2, a return liquid pipe 3, a return liquid solenoid valve 4, a primary return liquid temperature sensor 5, a return liquid pressure sensor 6, a return liquid flow meter 7, a return liquid buffer tank 8, an electric heater 9, a replenishment tank 10, a water tank pipeline 11, a water tank inlet pipe 12, a water tank inlet solenoid valve 13, a water tank 14, a water tank outlet pipe 15, a water tank pump 16, a secondary return liquid temperature sensor 17, a pre-pressurization solenoid valve 18, a return liquid booster pump 19, a booster shut-off valve 20, a booster vent connector 21, a gas-liquid separator 22, a return liquid proportional valve 23, a supply liquid pipe 24, a supply liquid temperature sensor 25, a supply liquid pressure sensor 26, a supply liquid solenoid valve 27, a bypass pipeline 28, a bypass solenoid valve 29, a straight-through pipeline 30, a straight-through solenoid valve 31, a straight-through ball valve 32, a direct cooling pipeline 33, a direct cooling proportional valve 34, and a direct cooling condenser 35.

[0019] Multiple compression refrigeration systems 1 are connected in parallel to one side of the heat exchanger 2. The other side of the heat exchanger 2 is connected to a return liquid pipe 3 and a supply liquid pipe 24. The return liquid pipe 3 is connected to the load and passes through the return liquid solenoid valve 4, the return liquid primary temperature sensor 5, the return liquid pressure sensor 6, the return liquid flow meter 7, the return liquid buffer tank 8, the electric heater 9, and the replenishment tank 10 in sequence before splitting into two paths. One path goes through the water tank pipe 11 and then through the water tank inlet pipe 12 and the water tank outlet pipe 15 to the water tank 14. The water tank inlet pipe 12 connects to the upper part of the water tank 14 through the water tank inlet solenoid valve 13. The lower part of the water tank 14 is pumped to the water tank by the water tank pump 16 through the water tank outlet pipe 15. One path of the tank pipe 11 is connected to the other side of the heat exchanger 2 via the return liquid secondary temperature sensor 17, the pressurization device, the gas-liquid separator 22, and the return liquid proportional valve 23. The other side of the heat exchanger 2 is connected to the heat exchanger 2 via the supply liquid temperature sensor 25, the supply liquid pressure sensor 26, and the supply liquid solenoid valve 27. A bypass pipe 28 is connected between the return liquid pipe after the return liquid flow meter and the supply liquid pipe before the supply liquid temperature sensor. A bypass solenoid valve 29 is installed on the bypass pipe. A straight pipe 30 is also connected in parallel on the bypass pipe. A straight solenoid valve 31 and a straight ball valve 32 are installed on the straight pipe in sequence.

[0020] A direct cooling pipe 33 is connected to the return pipe before the return proportional valve. The direct cooling pipe 33 is connected to the supply pipe of the heat exchanger 2 via the direct cooling proportional valve 34 and the direct cooling condenser 35.

[0021] In this embodiment, the pressurization device includes two parallel pipelines. A pre-pressurization solenoid valve 18, a return pressurization pump 19, and a pressurization shut-off valve 20 are arranged in front of and behind the return liquid direction on the pipelines. Two pressurization venting connectors 21 are connected in front of the pre-pressurization solenoid valve and behind the pressurization shut-off valve, respectively.

[0022] Based on this embodiment, the front and rear pressure boosting and venting connectors 21 can also be connected to a water tank 14.

[0023] In this embodiment, high and low level sensors are installed inside the water tank. The water tank inlet pipe is connected to the water tank at a position higher than the high level sensor, and the water tank outlet pipe is connected to the water tank at a position lower than the low level sensor. An exhaust pipe is connected to the top of the water tank, a drain pipe is connected to the bottom of the water tank, and a water supply pipe is connected to the upper part of the water tank. The above technology is prior art and will not be described in detail in this utility model.

[0024] In this embodiment, the compression refrigeration system includes a compressor, a condenser, a liquid receiver, and an expansion valve. This compression refrigeration system is existing technology.

Claims

1. A highly reliable airborne thermal management system, comprising a compression refrigeration system and a heat exchanger, wherein multiple compression refrigeration systems are connected in parallel to one side of the heat exchanger's thermal path, and the other side of the heat exchanger's thermal path is connected to a return liquid pipe and a supply liquid pipe, characterized in that: The return liquid pipe starts from the load and passes sequentially through a return liquid solenoid valve, a return liquid primary temperature sensor, a return liquid pressure sensor, a return liquid flow meter, a return liquid buffer tank, an electric heater, and a replenishment tank before splitting into two paths. One path connects to the water tank via a water tank pipeline, which has an inlet and an outlet pipe. The inlet pipe connects to the upper part of the water tank via a water tank inlet solenoid valve, while the lower part of the water tank is pumped to the water tank pipeline via the outlet pipe. The other path connects to the return liquid secondary temperature sensor, a return liquid booster pump, a gas-liquid separator, and a return liquid... The liquid proportional valve is connected to the inlet of the other side of the heat exchanger. The outlet of the other side of the heat exchanger is connected to the liquid supply via a liquid supply temperature sensor, a liquid supply pressure sensor, and a liquid supply solenoid valve. A bypass pipe is connected between the return pipe after the return flow meter and the supply pipe before the liquid supply temperature sensor. A bypass solenoid valve is installed on the bypass pipe. A direct cooling pipe is also connected to the return pipe before the return proportional valve. The direct cooling pipe is connected to the supply pipe of the outlet of the other side of the heat exchanger via a direct cooling proportional valve and a direct cooling condenser.

2. The high-reliability airborne thermal management system according to claim 1, characterized in that: The bypass pipeline is also connected in parallel to a straight pipeline, on which a straight solenoid valve and a straight ball valve are installed in sequence.

3. The high-reliability airborne thermal management system according to claim 1, characterized in that: The return liquid booster pump is equipped with a booster solenoid valve before and after the return liquid direction, and a booster shut-off valve, respectively.

4. The high-reliability airborne thermal management system according to claim 1, characterized in that: The water tank is equipped with high and low level sensors. The water tank inlet pipe is connected to the water tank at a position higher than the high level sensor, and the water tank outlet pipe is connected to the water tank at a position lower than the low level sensor.

5. A highly reliable airborne thermal management system according to claim 1 or 4, characterized in that: The top of the water tank is connected to an exhaust pipe.

6. A highly reliable airborne thermal management system according to claim 1 or 4, characterized in that: The bottom of the water tank is connected to an emptying pipe, and the top of the water tank is connected to a water replenishment pipe.

7. A highly reliable airborne thermal management system according to claim 1, characterized in that: The compression refrigeration system includes a compressor, a condenser, a liquid receiver, and an expansion valve.

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