Dual-redundancy cold standby type liquid cooling airborne system with multi-mode power supply, method and medium

Abstract

The invention belongs to the technical field of aviation aircraft design, and particularly relates to a multi-mode power supply dual-redundancy cold standby type liquid cooling airborne system, method and medium, the system comprises liquid cooling pumps, a radiator, a power supply bus bar, time service equipment and a controller, the liquid cooling pumps comprise a liquid cooling pump 1 and a liquid cooling pump 2, inlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with liquid cooling electronic equipment, and inlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with the controller; outlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with the radiator, the radiator is connected with the liquid cooling electronic equipment, the power supply bus bar comprises a power supply bus bar 1 and a power supply bus bar 2, the power supply bus bar 1 supplies power to the liquid cooling pump 1 through the circuit breaker 1, the power supply bus bar 2 supplies power to the liquid cooling pump 2 through the circuit breaker 2, and the power supply bus bar 1 and the power supply bus bar 2 are connected with the controller. The liquid cooling pump 1, the liquid cooling pump 2 and the liquid cooling electronic equipment are all connected with the controller; the time service equipment is connected with the controller; the system self-adaptive capability and task reliability of the dual-redundancy cold standby type environment control liquid cooling system in different power supply modes are improved, the heat dissipation requirement of the liquid cooling electronic equipment in a flight task is guaranteed as much as possible, and the system reliability of an aircraft when the different power supply modes are switched back and forth is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft design, and particularly relates to a multi-mode power supply dual-redundancy cold backup type liquid cooling on-board system, method and medium. BACKGROUND

[0002] The aircraft environmental control liquid cooling system drives the flow of cooling liquid in the liquid cooling pipeline through the liquid cooling pump, exchanges heat with the liquid cooling electronic device cold plate, and exchanges heat with the fuel through the radiator, so as to realize the function of aircraft thermal management.

[0003] The liquid cooling pump in the aircraft environmental control liquid cooling system is usually driven by the strong electric resource on the aircraft, and the strong electric resource on the aircraft is usually affected by the aircraft engine and the generator. When the aircraft engine and the generator are in normal state, the liquid cooling pump in the environmental control liquid cooling system can usually work normally, the power consumption is not limited, and the liquid supply flow can be adjusted within a certain range to meet the heat dissipation demand of the liquid cooling electronic device on the aircraft; but when the aircraft engine and the generator are in partial failure mode, the power consumption of the liquid cooling pump in the environmental control liquid cooling system is limited, which is insufficient to support the full power working state, and can only work at a low power, or even in some cases, the power consumption of the liquid cooling pump will be directly disconnected.

[0004] Since the early aircraft power supply system usually controls the load power consumption of the environmental control liquid cooling system liquid cooling pump as power-on and power-off, the situation of limiting the power consumption of the liquid cooling pump is not common, the control method of the early environmental control liquid cooling system is usually not strongly associated with the power supply mode, is usually only associated with the power supply busbar, and the influence of the control method on the function of the environmental control liquid cooling system under different power supply modes is not analyzed and sorted.

[0005] With the gradual deepening and refinement of the design of the aircraft system, the load management system of the aircraft power supply system tends to be more refined for different use scenarios, and the power consumption of each load is managed by on-off according to different power supply modes, and the environmental control liquid cooling system also needs to be cooperatively designed, the system architecture of the interlocking system is changed, the cooperative optimization with adaptive characteristics is carried out, the control method of different aircraft power supply modes is deeply analyzed and processed, and the development of the environmental control system towards high reliability, high autonomy and high stability is promoted. SUMMARY

[0006] The purpose of the present application: in order to solve the problem of insufficient power generation on the plane in the partial power supply mode, which leads to the need to reduce the power of the environmental control liquid cooling system, and improve the system adaptive ability and task reliability of the double redundancy cold standby type environmental control liquid cooling system in different power supply modes, and as far as possible guarantee the heat dissipation demand of liquid cooling electronic equipment in flight task, and ensure the system reliability when the plane switches between different power supply modes, the present application provides a double redundancy cold standby type liquid cooling airborne system, method and medium of multi-mode power supply.

[0007] The technical scheme of the present application: The double redundancy cold standby type liquid cooling airborne system of multi-mode power supply comprises a liquid cooling pump, a radiator, a power bus bar, a time device and a controller, the liquid cooling pump comprises a liquid cooling pump 1 and a liquid cooling pump 2, the inlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with liquid cooling electronic equipment, the outlets of the liquid cooling pump 1 and the liquid cooling pump 2 are connected with the radiator, the radiator is connected with the liquid cooling electronic equipment, the power bus bar comprises a power bus bar 1 and a power bus bar 2, the power bus bar 1 supplies power to the liquid cooling pump 1 through a circuit breaker 1, the power bus bar 2 supplies power to the liquid cooling pump 2 through a circuit breaker 2, the power bus bar 1 and the power bus bar 2 are connected with the controller, and the liquid cooling pump 1, the liquid cooling pump 2 and the liquid cooling electronic equipment are connected with the controller; the time device is connected with the controller.

[0008] Further, the controller comprises a power supply partition module and an environmental control partition module, the power supply partition module is connected with the power bus bar 1, the power bus bar 2, the circuit breaker 1 and the circuit breaker 2 respectively, collects voltage signals of the power bus bar 1 and the power bus bar 2, on-off states of the circuit breaker 1 and the circuit breaker 2 and provides on-off control instructions for the circuit breaker 1 and the circuit breaker 2, and simultaneously transmits the collected voltage signals of the power bus bar 1 and the power bus bar 2, the on-off states of the circuit breaker 1 and the circuit breaker 2 and the calculated liquid cooling pump 1 power limiting signal and liquid cooling pump 2 power limiting signal to the environmental control partition module; The environmental control partition module is connected with the liquid cooling pump 1, the liquid cooling pump 2 and the liquid cooling electronic equipment respectively, collects heat dissipation demand signals of the liquid cooling electronic equipment and date signals provided by the time device, and provides control instructions for the liquid cooling pump 1 and the liquid cooling pump 2.

[0009] A control method of the double redundancy cold standby type liquid cooling airborne system of multi-mode power supply is implemented through the system, comprising: Master and standby pump determination: the master and standby pump selection of the double redundancy cold standby type liquid cooling system in the current flight cycle is determined according to the time information provided by the time device; Working pump control: if the power supply level of the current working liquid cooling pump is lower than that of the other liquid cooling pump, the other liquid cooling pump is switched to work, otherwise the current liquid cooling pump continues to work; Speed control: the speed of the liquid cooling pump is controlled according to the power supply state of the liquid cooling pump.

[0010] Furthermore, the primary / backup determination specifically includes: If the controller is powered on on an odd-numbered day, then liquid cooling pump 1 is the main pump and liquid cooling pump 2 is the standby pump. If the controller is powered on on an even-numbered day, then liquid cooling pump 2 is the main pump and liquid cooling pump 1 is the standby pump. If the heat dissipation demand signal of any liquid-cooled electronic device exists, but the timing device has not yet provided time information, then liquid-cooled pump 1 is directly determined to be the main pump and liquid-cooled pump 2 is the backup pump.

[0011] Furthermore, the working pump control process includes: If the currently operating liquid cooling pump is the main pump, and the power supply level of the main pump is lower than that of the standby pump, then the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal of the standby pump, and the liquid cooling pump speed control signal of the main pump is stopped; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal of the main pump, and the liquid cooling pump speed control signal of the standby pump is stopped. If the currently operating liquid cooling pump is a standby pump, and the power supply level of the standby pump is lower than that of the main pump, then the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal for the main pump, and the liquid cooling pump speed control signal for the standby pump is "stop"; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal for the standby pump, and the liquid cooling pump speed control signal for the main pump is "stop".

[0012] Furthermore, the process for determining the power supply level is as follows: When the liquid cooling pump is not powered, the power supply level of the liquid cooling pump is 0. When the liquid cooling pump is in a power-limited state, the power supply level of the liquid cooling pump is 1; When the liquid cooling pump is powered, the power supply level of the liquid cooling pump is 2. The higher the power supply rating number of a liquid cooling pump, the higher the power quality of the liquid cooling pump. Furthermore, the power supply status of the liquid cooling pump includes: The liquid cooling pump of the environmental control liquid cooling system has three power supply states: no power, limited power, and power. When the liquid cooling pump is out of power, it has no available power supply and cannot work properly. When the liquid cooling pump is in a limited power supply state, the liquid cooling pump has an available working power supply, but due to insufficient power generation on the machine, the liquid cooling pump needs to work at the lowest power consumption, that is, at the lowest speed. When the liquid cooling pump is powered, it has a usable power supply, can work normally, and adjusts its speed according to the normal speed control logic.

[0013] Furthermore, the process for determining the power supply status of the liquid cooling pump in the environmental control liquid cooling system: When the voltage of the power supply busbar at the front end of the liquid cooling pump is less than voltage A, or the circuit breaker at the front end of the liquid cooling pump is in the open state, the power supply status of the liquid cooling pump is no power; where voltage A is adjusted according to the power supply system on the machine. When the voltage of the power supply busbar at the front end of the liquid cooling pump is greater than or equal to voltage A, and the circuit breaker at the front end of the liquid cooling pump is in the ON state, and the power consumption limit signal of the liquid cooling pump is power limit, the power supply status of the liquid cooling pump is power limit. When the voltage of the power supply busbar at the front end of the liquid cooling pump is greater than or equal to voltage A, and the circuit breaker at the front end of the liquid cooling pump is in the ON state, and the power limit signal of the liquid cooling pump is not a power limit signal, the power supply status of the liquid cooling pump is "on".

[0014] Furthermore, the speed control process includes the following steps: (a) If the power supply status of the currently selected liquid cooling pump is no power, the liquid cooling pump speed control signal output by the environmental control zoning module is 0; otherwise, proceed to step (b). (b) If the power supply status of the currently selected pump is limited, the liquid cooling pump speed control signal output by the environmental control zoning module is the lowest speed; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the normal control speed.

[0015] A computer storage medium storing a computer program for executing a control method for a multi-mode power supply dual-redundant cold standby liquid-cooled airborne system.

[0016] The beneficial effects of this invention are: This invention provides a dual-redundant cold standby liquid-cooled airborne system, method, and medium with multi-mode power supply. The control method specifies the integration principle of the power supply status and power supply level of each liquid-cooled pump under different aircraft power supply modes. The power supply status of the liquid-cooled pump is determined based on the voltage status of the power supply busbar directly related to the liquid-cooled pump and the on / off status of the circuit breaker, and the power supply level is determined based on the power supply status, thus deepening the granularity of system control. Based on the current flight date and the power supply level signals of each liquid-cooled pump, the most suitable liquid-cooled pump for operation in the environmental control liquid-cooling system is comprehensively determined. While ensuring the maximum liquid supply capacity of the liquid-cooling system, the system avoids switching the operating liquid-cooled pump as much as possible, reducing the impact of switching between aircraft power supply modes on the environmental control liquid-cooling system and improving system robustness. Finally, the speed of the liquid-cooled pump is controlled according to the power supply status of the current operating pump, improving the mission reliability and autonomous control capability of the environmental control system, and providing heat dissipation for liquid-cooled electronic equipment with the maximum liquid supply capacity achievable under the current aircraft conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system principle of the present invention.

[0018] Figure 2This is a diagram showing the power supply status of the liquid cooling pump under different power supply modes.

[0019] Figure 3 This is a flowchart of the method of the present invention; Figure 4 This is the control timing diagram for a multi-mode power supply dual-redundant cold standby liquid cooling system. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Assume that the liquid cooling pump in the environmental control liquid cooling system of a certain aircraft is a dual-redundant cold standby type.

[0022] One embodiment of the present invention provides a dual-redundant cold standby liquid-cooled airborne system with multi-mode power supply. This environmentally controlled liquid cooling system comprises system components such as a liquid cooling pump, radiator, one-way valve, and liquid cooling piping. The system has a closed-loop structure. The power demand of the liquid cooling pump in this system is provided by the busbar of the power supply system, and the control commands for the liquid cooling pump are issued by the controller. Figure 1 As shown; in: The liquid cooling pump serves as the drive source for the environmentally controlled liquid cooling system, providing power to ensure the flow of coolant. The system contains two liquid cooling pumps, which act as cold backups. If one liquid cooling pump fails or loses power, it will stop working, and the other liquid cooling pump will start working. The speed of the liquid cooling pump has a stepless adjustment function within a certain range. The radiator is located at the front end of the liquid-cooled electronic equipment and the rear end of the liquid-cooled pump. The radiator is the core of the heat exchange of the entire system. Its main function is to remove the heat generated by the liquid-cooled electronic equipment through the heat exchange between the coolant and the fuel, and to increase the temperature of the fuel to ensure the performance of the fuel system. One-way valves are located at the rear end of the liquid cooling pump and the front end of the radiator. The one-way valves are used to ensure the flow direction of the coolant, ensuring the directional flow of the coolant in the environmentally controlled liquid cooling system and preventing the coolant from flowing from one pump outlet to another pump outlet. The liquid cooling pipeline is connected to the liquid cooling electronic equipment and the finished environmental control liquid cooling system. The coolant enters the liquid cooling pipeline through the ground filling pipeline, and after being pressurized by the liquid cooling pump, it flows through the radiator and exchanges heat with the fuel. Then it enters the liquid cooling electronic equipment, exchanges heat with the hot plate of the liquid cooling electronic equipment, and returns to the inlet of the liquid cooling pump. Power supply busbar 1 and power supply busbar 2 provide high-voltage power to liquid cooling pump 1 and liquid cooling pump 2 respectively, and also provide voltage signals from the busbars to the controller's power supply zone software, such as... Figure 1 As shown in signals 6 and 7, there is a circuit breaker 1 and a circuit breaker 2 on the power supply lines of liquid cooling pump 1 and liquid cooling pump 2 respectively. These circuit breakers receive commands from the controller's power supply zone software, which control the on / off state of the circuit breakers. Simultaneously, the controller's power supply zone software also collects the on / off state of these circuit breakers, such as... Figure 1 As shown in signal 4 and signal 5; The controller's power supply zoning software determines the current aircraft power supply mode by collecting the on / off status of each generator contactor in the aircraft's power supply system. Based on the current power supply mode, it calculates the power limit signals for the relevant electrical equipment and sends the voltage signals of power supply busbar 1, power supply busbar 2, circuit breaker 1, circuit breaker 2, liquid coolant pump 1, and liquid coolant pump 2 to the controller's environmental control zoning software. The environmental control zoning software in the controller uses the collected external signals to logically calculate the speed control signals for the two liquid coolant pumps and sends them to the two liquid coolant pumps. Figure 1 Signal 1 and signal 2 are shown in the diagram; Liquid-cooled electronic devices can send signals to the controller indicating their heat dissipation requirements, such as... Figure 1 Shown as medium signal 9; The onboard electronic devices with time synchronization capabilities will send the current time information to the controller in real time, such as... Figure 1 Shown in signal 8.

[0023] The second embodiment of the present invention provides a control method for a dual-redundant cold standby liquid-cooled airborne system with multi-mode power supply, including: main / standby pump determination logic, working pump control logic, and speed control logic; Primary / backup pump selection logic: Based on the time information provided by the timing equipment, determine the primary / backup pump selection of the dual-redundant cold standby liquid cooling system for the current flight sortie. Working pump control logic: If the power supply level of the currently working liquid cooling pump is lower than that of another liquid cooling pump, then switch to the other liquid cooling pump to work; otherwise, the current liquid cooling pump continues to work. Speed ​​control logic: Control the speed of the liquid cooling pump according to the power supply status of the liquid cooling pump.

[0024] After the controller is powered on, the main and backup pump determination logic is prioritized, followed by the working pump control, and finally the speed control. After the main and backup pump determination logic is completed after the controller is powered on, no further determination is made, and the subsequent control logic determination starts directly from the working pump control logic.

[0025] The logic for determining the main and standby pumps in the environmental control liquid cooling system is as follows: Figure 3As shown in section ①, the selection of the primary or backup pump for the dual-redundant cold-standby liquid-cooled pump in the current flight sortie is determined based on the time information provided by the timing equipment; specifically, this includes: If the controller is powered on on an odd-numbered day (e.g., day 1, day 3), then liquid cooling pump 1 is the main pump and liquid cooling pump 2 is the backup pump. If the controller is powered on on an even-numbered day (e.g., day 2, day 4), then liquid cooling pump 2 is the main pump and liquid cooling pump 1 is the standby pump. If the heat dissipation demand signal of any liquid-cooled electronic device exists, but the timing device has not yet provided time information, then liquid-cooled pump 1 is directly determined to be the main pump and liquid-cooled pump 2 is the backup pump.

[0026] The working pump control logic of the environmentally controlled liquid cooling system is as follows: Figure 3 As shown in section number ②, the working pump control process includes: If the currently operating liquid cooling pump is the main pump, and the power supply level of the main pump is lower than that of the standby pump, then the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal of the standby pump, and the liquid cooling pump speed control signal of the main pump is stopped; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal of the main pump, and the liquid cooling pump speed control signal of the standby pump is stopped. If the currently operating liquid cooling pump is a standby pump, and the power supply level of the standby pump is lower than that of the main pump, then the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal for the main pump, and the liquid cooling pump speed control signal for the standby pump is "stop"; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal for the standby pump, and the liquid cooling pump speed control signal for the main pump is "stop".

[0027] The process for determining the power supply level is as follows: When the liquid cooling pump is not powered, the power supply level of the liquid cooling pump is 0. When the liquid cooling pump is in a power-limited state, the power supply level of the liquid cooling pump is 1; When the liquid cooling pump is powered, the power supply level of the liquid cooling pump is 2. The higher the power supply rating number of a liquid cooling pump, the higher the power quality of the liquid cooling pump. The power supply status of the liquid cooling pump in the environmental control liquid cooling system is as follows: Figure 2 As shown, the power supply status of the liquid cooling pump includes: The liquid cooling pump of the environmental control liquid cooling system has three power supply states: no power, limited power, and power. When the liquid cooling pump is out of power, it has no available power supply and cannot work properly. When the liquid cooling pump is in a limited power supply state, the liquid cooling pump has an available working power supply, but due to insufficient power generation on the machine, the liquid cooling pump needs to work at the lowest power consumption, that is, at the lowest speed. When the liquid cooling pump is powered, it has a usable power supply, can work normally, and adjusts its speed according to the normal speed control logic.

[0028] The process for determining the power supply status of the liquid cooling pump in the environmental control liquid cooling system is as follows: When the voltage of the power supply busbar at the front end of the liquid cooling pump is less than the voltage A, or the circuit breaker at the front end of the liquid cooling pump is in the open state, the power supply state of the liquid cooling pump is no power; wherein the voltage A is adjusted according to the power supply system on the machine. For example, if the power supply system is 270V, then the voltage A is preferably 200V to 220V. When the voltage of the power supply busbar at the front end of the liquid cooling pump is greater than or equal to voltage A, and the circuit breaker at the front end of the liquid cooling pump is in the ON state, and the power consumption limit signal of the liquid cooling pump is power limit, the power supply status of the liquid cooling pump is power limit. When the voltage of the power supply busbar at the front end of the liquid cooling pump is greater than or equal to voltage A, and the circuit breaker at the front end of the liquid cooling pump is in the ON state, and the power limit signal of the liquid cooling pump is not a power limit signal, the power supply status of the liquid cooling pump is "on".

[0029] In this invention, the speed control logic of the environmentally controlled liquid cooling system is as follows: Figure 3 As shown in number ③, the speed control process includes the following steps: (a) If the power supply status of the currently selected liquid cooling pump is no power, the liquid cooling pump speed control signal output by the environmental control zoning module is 0; otherwise, proceed to step (b). (b) If the power supply status of the currently selected pump is limited, the liquid cooling pump speed control signal output by the environmental control zoning module is the lowest speed setting; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the normal control speed setting. The normal control speed signal for the liquid cooling pump is a graded control, for example, the speed is divided into grades A, B, C…X, etc., with grade X corresponding to the highest speed and grade A corresponding to the lowest speed.

[0030] The third embodiment of the present invention provides a control method for a dual-redundant cold-standby liquid-cooled airborne system with multi-mode power supply. Assuming an aircraft performs a mission on odd-numbered days, the liquid-cooled pump speed control signal of the aircraft's environmental control liquid-cooling system has two levels: level A and level B. The aircraft has nine power supply modes, and these modes change in a specific sequence during flight. The control timing diagram of this dual-redundant cold-standby liquid-cooled system control method based on multi-mode power supply is shown below. Figure 4 : Among them, the impact of the nine power supply modes on the power supply status of the liquid cooling pump is assumed to be as follows: Figure 2 As shown: When the power supply mode is 1, the power supply status of liquid cooling pump 1 is no power, and the power supply status of liquid cooling pump 2 is no power; When the power supply mode is 2, the power supply status of liquid cooling pump 1 is limited power, and the power supply status of liquid cooling pump 2 is no power. When the power supply mode is 3, the liquid cooling pump 1 is powered and the liquid cooling pump 2 is not powered. When the power supply mode is 4, the power supply status of liquid cooling pump 1 is no power, and the power supply status of liquid cooling pump 2 is limited power. When the power supply mode is 5, the power supply status of liquid cooling pump 1 is limited power, and the power supply status of liquid cooling pump 2 is limited power. When the power supply mode is 6, the power supply status of liquid cooling pump 1 is "powered" and the power supply status of liquid cooling pump 2 is "power limited". When the power supply mode is 7, the power supply status of liquid cooling pump 1 is no power, and the power supply status of liquid cooling pump 2 is on. When the power supply mode is 8, the power supply status of liquid cooling pump 1 is limited power, and the power supply status of liquid cooling pump 2 is powered. When the power supply mode is 9, the power supply status of liquid cooling pump 1 is "powered" and the power supply status of liquid cooling pump 2 is "powered".

[0031] Before time T0, since the mission date is an odd number, the aircraft is powered on and the main pump for that day is determined to be liquid cooling pump 1. From time T0 to time T10, the aircraft's power supply mode is as follows: Figure 4 Changes begin; Before time T0, the power supply mode is 1, the power supply status of liquid cooler 1 is off, liquid cooler 2 is off, and the speed control signals of liquid cooler 1 and liquid cooler 2 are both 0. At times T0 to T1, the power supply mode is 9. The power supply status of liquid cooling pump 1 is energized, and the power supply status of liquid cooling pump 2 is energized. At this time, the power supply level of the main pump is equal to that of the standby pump. Since the current working pump is the main pump, the controller's control command will continue to be maintained on the main pump. At the same time, the power supply status of the main pump is in normal condition. The controller controls the main pump to work according to gear B, that is, the speed control signal of liquid cooling pump 1 is gear B, and the speed control signal of liquid cooling pump 2 is 0. At times T1 to T2, the power supply mode is 4. The power supply status of liquid cooling pump 1 is no power, and the power supply status of liquid cooling pump 2 is limited power. At this time, the power supply level of the main pump is less than the power supply level of the standby pump. The controller's control command switches to the standby pump. At the same time, the standby pump's power supply status is limited power. The controller controls the standby pump to work according to gear A, that is, the speed control signal of liquid cooling pump 1 is 0 and the speed control signal of liquid cooling pump 2 is gear A. At times T2 to T3, the power supply mode is 9. The power supply status of liquid cooling pump 1 is energized, and the power supply status of liquid cooling pump 2 is energized. At this time, the power supply level of the main pump is equal to that of the standby pump. Since the current working pump is the standby pump, the controller's control command will continue to remain on the standby pump. At the same time, the power supply status of the main pump is in the power limiting state. The controller controls the main pump to work at gear A, that is, the speed control signal of liquid cooling pump 1 is 0 and the speed control signal of liquid cooling pump 2 is gear B. At times T3 to T4, the power supply mode is 6. Liquid pump 1 is powered, and liquid pump 2 is powered but limited. At this time, the power supply level of the main pump is greater than that of the standby pump. The controller's control command is switched to the main pump. At the same time, the main pump is in normal power supply status. The controller controls the main pump to work at gear B, that is, the speed control signal of liquid pump 1 is gear B and the speed control signal of liquid pump 2 is 0. At times T4 to T5, the power supply mode is 5. The power supply status of liquid cooling pump 1 is limited power, and the power supply status of liquid cooling pump 2 is limited power. At this time, the power supply level of the main pump is equal to that of the standby pump. Since the current working pump is the main pump, the controller's control command will continue to be maintained on the main pump. At the same time, the power supply status of the main pump is limited power. The controller controls the main pump to work according to gear A, that is, the speed control signal of liquid cooling pump 1 is gear A, and the speed control signal of liquid cooling pump 2 is 0. At times T5 to T6, the power supply mode is 8. The power supply status of liquid cooling pump 1 is limited power, and the power supply status of liquid cooling pump 2 is powered. At this time, the power supply level of the main pump is less than that of the standby pump. The controller's control command switches to the standby pump. At the same time, the standby pump's power supply status is limited power. The controller controls the standby pump to work according to gear B, that is, the speed control signal of liquid cooling pump 1 is 0 and the speed control signal of liquid cooling pump 2 is gear B. At times T6 to T7, the power supply mode is 5. The power supply status of liquid cooling pump 1 is limited power, and the power supply status of liquid cooling pump 2 is limited power. At this time, the power supply level of the main pump is equal to the power supply level of the standby pump. Since the current working pump is the standby pump, the controller's control command will continue to remain on the standby pump. At the same time, the standby pump's power supply status is limited power. The controller controls the main pump to work at gear B, that is, the speed control signal of liquid cooling pump 1 is 0, and the speed control signal of liquid cooling pump 2 is gear B. At times T7 to T8, the power supply mode is 7. Liquid cooler pump 1 is powered off, while liquid cooler pump 2 is powered on. At this time, the power supply level of the main pump is less than that of the standby pump. The controller's control command will continue to be maintained on the standby pump. At the same time, the standby pump is in a power-limited state. The controller controls the standby pump to work at gear B, that is, the speed control signal of liquid cooler pump 1 is 0 and the speed control signal of liquid cooler pump 2 is gear B. At times T8 to T9, the power supply mode is 3. Liquid cooler pump 1 is powered, while liquid cooler pump 2 is powered off. At this time, the power supply level of the main pump is greater than that of the standby pump. The controller's control command is switched to the main pump. At the same time, the main pump's power supply status is normal. The controller controls the main pump to work at gear B, that is, the speed control signal of liquid cooler pump 1 is gear B, and the speed control signal of liquid cooler pump 2 is 0. Between times T9 and T10, the power supply mode is 2. The power supply status of liquid cooler pump 1 is limited power, and the power supply status of liquid cooler pump 2 is no power. At this time, the power supply level of the main pump is greater than that of the standby pump. The controller's control command will continue to be maintained on the main pump. At the same time, the power supply status of the main pump is limited power. The controller controls the main pump to work according to gear A, that is, the speed control signal of liquid cooler pump 1 is gear A, and the speed control signal of liquid cooler pump 2 is 0.

[0032] The final embodiment of the present invention provides a computer storage medium storing a computer program for executing a control method for the multi-mode power supply dual-redundant cold standby liquid-cooled airborne system.

[0033] In summary, the present invention proposes a multi-mode power supply dual-redundant cold standby liquid cooling system and control method, which has the following characteristics: 1. The environmental control liquid cooling system adopts a simple closed-loop architecture, which removes heat from the liquid-cooled electronic equipment through the fuel heat exchanger; the environmental control liquid cooling system consists of a liquid cooling pump, radiator, one-way valve, and liquid cooling pipeline; the liquid cooling pump in the liquid cooling system architecture is a dual-redundant cold standby type. 2. The control method of the environmental control liquid cooling system specifies the integration principle of the power supply status and power supply level of each liquid cooling pump under different aircraft power supply modes. This principle targets the voltage status of the power supply busbars and the on / off status of the circuit breakers that are directly related to the liquid cooling pumps, and deepens the granularity of system control. 3. The control method of this environmental control liquid cooling system aims to minimize the switching of the working liquid cooling pump, reduce the impact on the environmental control liquid cooling system under unstable conditions of back-and-forth switching of aircraft power supply modes, and improve system robustness. 4. The control method of this environmental control liquid cooling system determines the current working pump based on the current flight date and the power supply level signals of each liquid cooling pump, thereby improving the system's autonomy; 5. The control method of this environmental control liquid cooling system clarifies the method of controlling the liquid cooling pump speed according to different aircraft power supply modes.

[0034] The above description is merely a specific embodiment of the present invention, providing a detailed description of the invention. Parts not covered herein are conventional techniques. However, the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A dual-redundant cold standby liquid-cooled airborne system with multi-mode power supply, characterized in that, The system includes a liquid-cooled pump, a radiator, a power supply busbar, a timing device, and a controller. The liquid-cooled pump includes liquid-cooled pump 1 and liquid-cooled pump 2. The inlets of both liquid-cooled pump 1 and liquid-cooled pump 2 are connected to the liquid-cooled electronic equipment. The outlets of both liquid-cooled pump 1 and liquid-cooled pump 2 are connected to the radiator, which is also connected to the liquid-cooled electronic equipment. The power supply busbar includes power supply busbar 1 and power supply busbar 2. Power supply busbar 1 supplies power to liquid-cooled pump 1 through circuit breaker 1, and power supply busbar 2 supplies power to liquid-cooled pump 2 through circuit breaker 2. Both power supply busbar 1 and power supply busbar 2 are connected to the controller. Liquid-cooled pump 1, liquid-cooled pump 2, and the liquid-cooled electronic equipment are all connected to the controller. The timing device is also connected to the controller.

2. The system according to claim 1, characterized in that, The controller includes a power supply partition module and an environmental control partition module. The power supply partition module is connected to power supply busbar 1, power supply busbar 2, circuit breaker 1, and circuit breaker 2, respectively. It collects the voltage signals of power supply busbar 1 and power supply busbar 2, the on / off status of circuit breaker 1 and circuit breaker 2, and provides on / off control commands to circuit breaker 1 and circuit breaker 2. At the same time, it transmits the collected voltage signals of power supply busbar 1 and power supply busbar 2, the on / off status of circuit breaker 1 and circuit breaker 2, and the calculated power limit signals of liquid cooling pump 1 and liquid cooling pump 2 to the environmental control partition module. The environmental control zoning module is connected to liquid cooling pump 1, liquid cooling pump 2, and liquid cooling electronic equipment respectively, and collects the heat dissipation demand signal of liquid cooling electronic equipment and the date signal provided by the time synchronization device, and provides control commands to liquid cooling pump 1 and liquid cooling pump 2.

3. A control method for a multi-mode power supply dual-redundant cold standby liquid-cooled airborne system, implemented through the system described in claim 2, characterized in that, include: Primary / backup pump determination: The selection of primary / backup pumps for the dual-redundant cold standby liquid cooling system under the current flight sortie is determined based on the time information provided by the timing equipment. Working pump control: If the power supply level of the currently working liquid cooling pump is lower than that of another liquid cooling pump, then switch to the other liquid cooling pump to work; otherwise, the current liquid cooling pump continues to work. Speed ​​control: The speed of the liquid cooling pump is controlled according to the power supply status of the liquid cooling pump.

4. The method according to claim 3, characterized in that, The primary / backup determination specifically includes: If the controller is powered on on an odd-numbered day, then liquid cooling pump 1 is the main pump and liquid cooling pump 2 is the standby pump. If the controller is powered on on an even-numbered day, then liquid cooling pump 2 is the main pump and liquid cooling pump 1 is the standby pump. If the heat dissipation demand signal of any liquid-cooled electronic device exists, but the timing device has not yet provided time information, then liquid-cooled pump 1 is directly determined to be the main pump and liquid-cooled pump 2 is the backup pump.

5. The method according to claim 4, characterized in that, The working pump control process includes: If the currently operating liquid cooling pump is the main pump, and the power supply level of the main pump is lower than that of the standby pump, then the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal of the standby pump, and the liquid cooling pump speed control signal of the main pump is stopped; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal of the main pump, and the liquid cooling pump speed control signal of the standby pump is stopped. If the currently operating liquid cooling pump is a standby pump, and the power supply level of the standby pump is lower than that of the main pump, then the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal for the main pump, and the liquid cooling pump speed control signal for the standby pump is "stop"; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the liquid cooling pump speed control signal for the standby pump, and the liquid cooling pump speed control signal for the main pump is "stop".

6. The method according to claim 5, characterized in that, The process for determining the power supply level is as follows: When the liquid cooling pump is not powered, the power supply level of the liquid cooling pump is 0. When the liquid cooling pump is in a power-limited state, the power supply level of the liquid cooling pump is 1; When the liquid cooling pump is powered, the power supply level of the liquid cooling pump is 2. The higher the power supply rating number of a liquid cooling pump, the higher the power quality of the pump.

7. The method according to claim 6, characterized in that, The power supply status of the liquid cooling pump includes: The liquid cooling pump of the environmental control liquid cooling system has three power supply states: no power, limited power, and power. When the liquid cooling pump is out of power, it has no available power supply and cannot work properly. When the liquid cooling pump is in a limited power supply state, the liquid cooling pump has an available working power supply, but due to insufficient power generation on the machine, the liquid cooling pump needs to work at the lowest power consumption, that is, at the lowest speed. When the liquid cooling pump is powered, it has a usable power supply, can work normally, and adjusts its speed according to the normal speed control logic.

8. The method according to claim 7, characterized in that, Process for determining the power supply status of the liquid cooling pump in an environmentally controlled liquid cooling system: When the voltage of the power supply busbar at the front end of the liquid cooling pump is less than voltage A, or the circuit breaker at the front end of the liquid cooling pump is in the open state, the power supply status of the liquid cooling pump is no power; where voltage A is adjusted according to the power supply system on the machine. When the voltage of the power supply busbar at the front end of the liquid cooling pump is greater than or equal to voltage A, and the circuit breaker at the front end of the liquid cooling pump is in the ON state, and the power consumption limit signal of the liquid cooling pump is power limit, the power supply status of the liquid cooling pump is power limit. When the voltage of the power supply busbar at the front end of the liquid cooling pump is greater than or equal to voltage A, and the circuit breaker at the front end of the liquid cooling pump is in the ON state, and the power limit signal of the liquid cooling pump is not a power limit signal, the power supply status of the liquid cooling pump is "on".

9. The method according to claim 8, characterized in that, The speed control process includes the following steps: (a) If the power supply status of the currently selected liquid cooling pump is no power, the liquid cooling pump speed control signal output by the environmental control zoning module is 0; otherwise, proceed to step (b). (b) If the power supply status of the currently selected pump is limited, the liquid cooling pump speed control signal output by the environmental control zoning module is the lowest speed; otherwise, the liquid cooling pump speed control signal output by the environmental control zoning module is the normal control speed.

10. A computer storage medium, characterized in that, The storage medium stores a computer program for executing the control method of the dual-redundant cold standby liquid-cooled airborne system with multi-mode power supply as described in any one of claims 3-9.

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