Unmanned aerial vehicle pod environment control system

Abstract

The invention belongs to the technical field of pod environment control systems, and relates to an unmanned aerial vehicle pod environment control system. Comprising a liquid cooling assembly (1), a two-way control ball valve (2), an equipment cold plate (3), a flow sensor (5), an environmental control computer (6), a three-way shunt (7) and an air-liquid heat exchanger (8), the three-way control ball valve (9), a temperature and pressure sensor (10), a fluid connector (20) and an environmental control controller (21) provide liquid with certain flow, pressure and temperature, and the liquid exchanges heat with outside air through the air-liquid heat exchanger (8) installed at the top of a pod. Low-temperature fluid flows through the equipment cold plate (3) to take away heat of the electronic equipment. The flow and the temperature of the refrigerating medium can be automatically adjusted according to the pod heat flux density fluctuation, the device is suitable for various working conditions, and the energy consumption of the platform is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pod environmental control systems and relates to an unmanned aerial vehicle pod environmental control system. Background Art

[0002] Pods are one of the main ways to improve aircraft capabilities. They have the advantages of strong independence, good maneuverability and expandability. As the integration of electronic equipment in pods becomes higher and higher, the heat flux density and heat dissipation power of the equipment are getting larger and larger, and the overall heat load fluctuation is getting stronger and stronger. Liquid cooling has been widely adopted. In order to ensure the reliability of equipment in the cabin without affecting the versatility and flexibility of pod use, an independent and integrable environmental control system must be equipped in the pod; ram air liquid cooling has the advantages of high heat dissipation efficiency, compact structure, flexible layout and strong controllability. It can meet the increasing integration of equipment and the heat dissipation needs of high heat flux density, and is one of the current hotspots in pod environmental control research. Summary of the invention

[0003] Purpose of the Invention

[0004] The invention provides an environmental control system for a UAV pod, which has the ability to automatically adjust the flow rate and temperature of the refrigeration medium, is suitable for a variety of working conditions, and can reduce the energy consumption of the platform while adjusting the fluctuation of the heat flux density of the equipment.

[0005] Technical Solution

[0006] A drone pod environmental control system comprises a liquid cooling component 1, a two-way control ball valve 2, an equipment cold plate 3, a flow sensor 5, an environmental control computer 6, a three-way splitter 7, an air-liquid heat exchanger 8, a three-way control ball valve 9, a temperature and pressure sensor 10 and an environmental control controller 21. The equipment cold plate 3 and the air-liquid heat exchanger 8 are arranged in sequence at the downstream of the liquid cooling component 1. The liquid supply port of the liquid cooling component 1 flows into the equipment cold plate 3 through the two-way control ball valve 2 and the inlet end of the equipment cold plate 3, and flows out from the outlet end of the equipment cold plate 3 and passes through the three-way divider 7, wherein the first path flows into the inlet end of the air-liquid heat exchanger 8, and flows out from the outlet end of the air-liquid heat exchanger 8 to the first path of the three-way control ball valve 9 after heat exchange in the air-liquid heat exchanger 8, and the second path of the three-way divider 7 flows into the second path of the three-way control ball valve 9, and the third path of the three-way control ball valve 9 enters the liquid return port of the liquid cooling component 1 after passing through the temperature and pressure sensor 10. In the liquid cooling component 1, the fluid flows from the liquid return port through the pressure sensor 11, the temperature sensor 12, the filter 14, the expansion storage tank 16, the liquid cooling pump 18, and the one-way valve 19 in sequence to reach the liquid supply port; the filter 14 A differential pressure signal device 13 is integrated. When the inlet and outlet pressure difference is greater than the pressure difference sent by the differential pressure signal device 13, the differential pressure signal device 13 sends a signal. The expansion storage tank 16 is integrated with a liquid level sensor 17. The liquid level sensor 17 converts the liquid level into a voltage signal. The aircraft power supply system 4 supplies power to the environmental control controller 21. The environmental control controller 21 collects output signals of the pressure sensor 11, the temperature sensor 12, the differential pressure signal device 13, and the liquid level sensor 17, and controls the start and stop of the liquid cooling pump 18, and feeds back the output signal and the working status of the liquid cooling pump 18 to the environmental control computer 6. The aircraft power supply system 4 supplies power to the environmental control computer 6. The environmental control computer 6 collects signals from the flow sensor 5, the temperature and pressure sensor 10, the two-way control ball valve 2, and the three-way control ball valve 9, and controls the valve core rotation angle opening of the two-way control ball valve 2 and the three-way control ball valve 9 respectively.

[0007] Furthermore, it also includes a fluid connector 20, which is respectively arranged at the liquid inlet and the liquid outlet of the air-liquid heat exchanger 8.

[0008] Furthermore, the liquid cooling component 1 adopts an integrated design, and is composed of a pressure sensor 11, a temperature sensor 12, a pressure difference signal device 13, a filter 14, a liquid level sensor 17, a filling valve 15, a liquid cooling pump 18 and a one-way valve 19.

[0009] Furthermore, the expansion liquid storage tank 16 adopts a spring piston structure.

[0010] Furthermore, the liquid cooling pump 18 adopts a centrifugal pump structure.

[0011] Furthermore, safety valves are connected in parallel at both ends of the inlet and outlet of the liquid cooling pump 18 .

[0012] Furthermore, the filter 14 has a precision of 40 μm.

[0013] Furthermore, the air-liquid heat exchanger 8 is located on the top of the nacelle, is designed to conform to the nacelle body, uses ram air as a cooling source, and adopts a plate-fin structure.

[0014] Furthermore, it also includes a filling valve 15, which is arranged on the expansion liquid storage tank 16 and adopts a self-sealing structure.

[0015] The beneficial effects of this application are:

[0016] The above invention provides liquid with a certain flow rate, pressure and temperature to the pod electronic equipment. The liquid exchanges heat with the outside air through the air-liquid heat exchanger (8) installed on the top of the pod, and the low-temperature fluid flows through the equipment cold plate (3) to take away the heat of the electronic equipment. The present invention can automatically adjust the flow rate and temperature of the refrigerant medium according to the fluctuation of the pod heat flux density, and is suitable for a variety of working conditions, reducing the energy consumption of the platform. At the same time, the present invention has the characteristics of compact structure, high degree of integration, high reliability, low energy consumption and light weight. Through multi-functional integrated design, it realizes multiple control functions, saving precious space and weight for the pod. The automatic control and multi-working condition characteristics of the pod environmental control system can be widely expanded and applied to a variety of electronic pods, such as laser pods, radar pods, etc., so as to maximize their functions with the minimum power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the principle of an unmanned aerial vehicle pod environmental control system.

[0018] Among them, a liquid cooling component (1), a two-way control ball valve (2), an equipment cold plate (3), an aircraft power supply system (4), a flow sensor (5), an environmental control computer (6), a three-way splitter (7), an air-liquid heat exchanger (8), a three-way control ball valve (9), a temperature and pressure sensor (10), a pressure sensor (11), a temperature sensor (12), a pressure differential signal device (13), a filter (14), a filling valve (15), an expansion tank (16), a liquid level sensor (17), a liquid cooling pump (18) and a one-way valve (19), a fluid connector (20), and an environmental control controller (21) DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention will be described in more detail in combination with the embodiment of the present invention. In the example, the same or similar reference numerals throughout represent the same or similar originals or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of them. The embodiments described below by reference are exemplary and intended to be used to explain the present invention, and should not be construed as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present invention. The following is a detailed description in combination with the embodiments of the present invention.

[0020] The environmental control computer (6) controls the start and stop of the liquid cooling pump (18), sucks out the coolant in the expansion storage tank (16) and pressurizes it, and the low-temperature coolant enters the equipment cold plate (3). After the equipment cold plate (3) absorbs heat and completes heat exchange, it enters the air-liquid heat exchanger (8) under the action of the circuit pressure. After the coolant completes secondary heat exchange with the suction air inside the air-liquid heat exchanger (8), the temperature is reduced, and after passing through the filter (14), it finally returns to the expansion storage tank (16), completing the liquid cooling circuit cycle.

[0021] The liquid cooling component (1) adopts an integrated design and is composed of a pressure sensor (11), a temperature sensor (12), a pressure difference signal device (13), a filter (14), a liquid level sensor (17), a filling valve (15), a liquid cooling pump (18) and a one-way valve (19), etc. The above components are fixed on the expansion liquid storage tank (16) by assembly.

[0022] The expansion storage tank (16) adopts a spring piston structure, relies on the piston to isolate the liquid cavity and the gas cavity, realizes volume compensation and self-pressurization through the spring elastic force, provides initial pressure for the pump inlet and compensates for the volume change of the coolant. When the system is overheated, the coolant begins to expand, compresses the piston assembly, and performs volume compensation; when the system is in a low temperature state, the coolant begins to contract, and at this time the piston assembly begins to expand under the action of its own elasticity, compressing the system liquid capacity.

[0023] The expansion liquid storage tank (16) is equipped with a liquid level sensor (17) which converts the liquid level into a voltage signal and outputs it to the environmental control controller (21). When the liquid level is insufficient, liquid is added or the system is leak tested.

[0024] The liquid cooling component (1) is equipped with a pressure sensor (11) and a temperature sensor (12) to monitor the pressure and temperature of the environmental control system and upload the information to the environmental control controller (21) and finally to the environmental control computer (6).

[0025] The pipeline is equipped with a flow sensor (5) to monitor the flow of the environmental control system and upload the flow to the environmental control computer (6).

[0026] The liquid cooling component (1) is equipped with a one-way valve (19) to control the flow direction of the liquid cooling and prevent the fluid from reversing in non-working conditions such as when the liquid is being filled.

[0027] The two-way control ball valve (2) receives control instructions from the environmental control computer (6), controls the flow of the coolant by adjusting the valve core rotation angle opening, and feeds back the opening information of the two-way control ball valve (2) to the environmental control computer (6).

[0028] The three-way control ball valve (9) receives control instructions from the environmental control computer (6), controls the mixing ratio of the coolant in the cold and hot circuits of the coolant by adjusting the valve core rotation angle opening, ensures that the coolant temperature is within the control range, and at the same time feeds back the opening information of the three-way control ball valve (9) to the environmental control computer (6).

[0029] The liquid cooling pump (18) adopts a centrifugal pump structure, and a safety valve is connected in parallel at both ends of the pump inlet and outlet. When the pressure reaches a set value, the safety valve automatically opens to unload the pressure, so that the liquid pressure does not exceed the design index of the environmental control system.

[0030] The liquid cooling component (1) is equipped with a filter (14) with a precision of 40 μm and an integrated pressure difference signaler (13). When the filter element component is seriously contaminated, the resistance of the filter element component increases, and the inlet and outlet pressure difference is greater than the pressure difference sent by the pressure difference signaler (13), the pressure difference signaler (13) sends a signal to prompt the replacement or cleaning of the filter element.

[0031] The air-liquid heat exchanger (8) is located on the top of the nacelle and is designed to conform to the cabin body. It uses ram air as a cooling source and adopts a plate-fin structure. The hot side liquid cooling liquid side adopts a two-flow process and the cold side air side adopts a single flow process. A liquid inlet and a liquid outlet are arranged on the lower side and are connected to the upper skin of the cabin body through the cabin body overlap.

[0032] Example

[0033] An unmanned aerial vehicle pod environmental control system comprises a liquid cooling component (1), a two-way control ball valve (2), an equipment cold plate (3), a flow sensor (5), an environmental control computer (6), a three-way splitter (7), an air-liquid heat exchanger (8), a three-way control ball valve (9), a temperature and pressure sensor (10), a fluid connector (20) and an environmental control controller (21). The equipment cold plate (3) and the air-liquid heat exchanger (8) are arranged in sequence downstream of the liquid cooling component (1). The liquid supply port of the liquid cooling component (1) flows into the equipment cold plate (3) through the two-way control ball valve (2) and the inlet end of the equipment cold plate (3), and flows out from the outlet end of the equipment cold plate (3) and passes through the three-way splitter (7). The first path flows into the inlet end of the air-liquid heat exchanger (8), and after heat exchange in the air-liquid heat exchanger (8), it flows out from the outlet end of the air-liquid heat exchanger (8) to the outlet of the three-way control ball valve (9). The first path, the second path of the three-way splitter (7) flows into the second path of the three-way control ball valve (9), the third path of the three-way control ball valve (9) flows through the temperature and pressure sensor (10) and then enters the liquid return port of the liquid cooling component (1), in the liquid cooling component (1), the fluid flows from the liquid return port in sequence through the pressure sensor (11), the temperature sensor (12), the filter (14), the expansion storage tank (16), the liquid cooling pump (18), the one-way valve (19) and then reaches the liquid supply port; the filter (14) A differential pressure signal device (13) is integrated thereon, and when the inlet and outlet pressure difference is greater than the pressure difference sent by the differential pressure signal device (13), the differential pressure signal device (13) sends a signal; the expansion liquid storage tank (16) is integrated with a liquid level sensor (17), and the liquid level sensor (17) converts the liquid level into a voltage signal; the aircraft power supply system (4) supplies power to the environmental control controller (21), and the environmental control controller (21) collects information from the pressure sensor (11), the temperature sensor (12), the differential pressure signal device (13), and the liquid level sensor (17). The sensor (17) outputs a signal and controls the start and stop of the liquid cooling pump (18), and feeds back the output signal and the working state of the liquid cooling pump (18) to the environmental control computer (6). The aircraft power supply system (4) supplies power to the environmental control computer (6). The environmental control computer (6) collects signals from the flow sensor (5), the temperature and pressure sensor (10), the two-way control ball valve (2), and the three-way control ball valve (9), and controls the valve core rotation angle opening of the two-way control ball valve (2) and the three-way control ball valve (9) respectively.

[0034] In a certain embodiment of the present invention, a fluid connector (20) is further included. The fluid connector (20) is respectively arranged at the liquid inlet and liquid outlet of the air-liquid heat exchanger (8), so as to facilitate the rapid disassembly of the air-liquid heat exchanger (8) on the environmental control system.

[0035] In a certain embodiment of the present invention, the liquid cooling component (1) adopts an integrated design and is composed of a pressure sensor (11), a temperature sensor (12), a pressure difference signal device (13), a filter (14), a liquid level sensor (17), a filling valve (15), a liquid cooling pump (18) and a one-way valve (19). The above components are assembled and fixed on the expansion storage tank (16), thereby optimizing the spatial arrangement of accessories, simplifying system piping and installation, reducing system weight, and improving reliability.

[0036] In a certain implementation case of the present invention, the expansion liquid storage tank (16) adopts a spring piston structure.

[0037] In a certain embodiment of the present invention, the liquid cooling pump (18) adopts a centrifugal pump structure.

[0038] In a certain implementation case of the present invention, a safety valve is connected in parallel at both ends of the inlet and outlet of the liquid cooling pump (18).

[0039] In a certain embodiment of the present invention, the accuracy of the filter (14) is 40 μm.

[0040] In a certain embodiment of the present invention, the air-liquid heat exchanger (8) is located on the top of the nacelle, is designed to conform to the nacelle body, uses ram air as a cooling source, and adopts a plate-fin structure.

[0041] In a certain embodiment of the present invention, a filling valve (15) is further included. The filling valve (15) is arranged on the expansion liquid storage tank (16) and adopts a self-sealing structure to facilitate the filling or discharge of fluid.

[0042] It is understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and unless defined as here, will not be interpreted with idealized or overly formal meanings. The specific implementation methods described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the present invention. Within the spirit and principle of the present invention, any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment of equivalent changes for application in other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution content of the present invention, any modification, equivalent replacement, improvement, etc., made according to the technical essence of the present invention, should be included in the protection scope of the present invention.

Claims

1. An unmanned aerial vehicle pod environmental control system, characterized in that: It includes a liquid cooling component, a two-way control ball valve, an equipment cold plate, a flow sensor, an environmental control computer, a three-way splitter, an air-liquid heat exchanger, a three-way control ball valve, a temperature and pressure sensor and an environmental control controller; the equipment cold plate and the air-liquid heat exchanger are arranged in sequence downstream of the liquid cooling component, the liquid supply port of the liquid cooling component flows into the equipment cold plate through the two-way control ball valve and the inlet end of the equipment cold plate, and flows out from the outlet end of the equipment cold plate and passes through the three-way splitter, wherein the first path flows into the inlet end of the air-liquid heat exchanger, flows out from the outlet end of the air-liquid heat exchanger to the first path of the three-way control ball valve after heat exchange in the air-liquid heat exchanger, the second path of the three-way splitter flows into the second path of the three-way control ball valve, the third path of the three-way control ball valve enters the return liquid port of the liquid cooling component after passing through the temperature and pressure sensor, in the liquid cooling component, the fluid flows from the return liquid port through the pressure sensor, the temperature sensor, the pressure ... The liquid supply port is reached after the pressure sensor, filter, expansion storage tank, liquid cooling pump and one-way valve are connected; a differential pressure signal device is integrated on the filter, and when the inlet and outlet pressure difference is greater than the differential pressure signal device sending pressure difference, the differential pressure signal device sends a signal; the expansion storage tank is integrated with a liquid level sensor, and the liquid level sensor converts the liquid level into a voltage signal; the aircraft power supply system supplies power to the environmental control controller, the environmental control controller collects output signals of the pressure sensor, temperature sensor, differential pressure signal device and liquid level sensor, and controls the start and stop of the liquid cooling pump, and feeds back the output signal and the working status of the liquid cooling pump to the environmental control computer, the aircraft power supply system supplies power to the environmental control computer, the environmental control computer collects signals of the flow sensor, temperature and pressure sensor, two-way control ball valve and three-way control ball valve, and controls the valve core rotation angle opening of the two-way control ball valve and the three-way control ball valve respectively.

2. The system according to claim 1, characterized in that It also includes fluid connectors, which are respectively arranged at the liquid inlet and the liquid outlet of the air-liquid heat exchanger.

3. The system according to claim 2, characterized in that The liquid cooling component adopts an integrated design and consists of a pressure sensor, a temperature sensor, a pressure differential signal device, a filter, a liquid level sensor, a filling valve, a liquid cooling pump and a one-way valve.

4. The system according to claim 3, characterized in that The expansion liquid storage tank adopts a spring piston structure.

5. The system according to claim 4, characterized in that The liquid cooling pump adopts a centrifugal pump structure.

6. The system according to claim 5, characterized in that Safety valves are connected in parallel at both ends of the inlet and outlet of the liquid cooling pump.

7. The system according to claim 6, characterized in that The filter has a precision of 40 μm.

8. The system according to claim 7, characterized in that The air-liquid heat exchanger is located on the top of the nacelle and is designed to conform to the nacelle body. The ram air is used as a cold source and a plate-fin structure is adopted.

9. The system according to claim 8, characterized in that It also includes a filling valve 1, which is arranged on the expansion storage tank.

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