Temperature control method for vertical debugging of satellite-borne phased-array antenna

Abstract

The invention provides a temperature control method for vertical debugging of a satellite-borne phased-array antenna, and the method comprises the steps: S1, enabling the satellite-borne phased-array antenna to enter a vertical state, and enabling a heat pipe in the satellite-borne phased-array antenna to be perpendicular to the ground; s2, respectively arranging liquid cooling plates at the top end and the bottom end of the satellite-borne phased-array antenna; s3, heating a heat pipe in the satellite-borne phased-array antenna to start the heat pipe; and S4, the temperatures of the two ends of the heat pipe are obtained, heating of the heat pipe is stopped when the temperature difference of the two ends of the heat pipe reaches a set threshold value, meanwhile, refrigerants are circularly conveyed to the liquid cooling plate arranged in the step S2 according to the set temperature, and temperature control over the satellite-borne phased-array antenna in the vertical debugging state is achieved by controlling the input temperature of the refrigerants. The satellite-borne phased-array antenna has the advantages of being large in heat dissipating capacity, high in temperature controllability and accurate in temperature control over the satellite-borne phased-array antenna.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of phased array antenna temperature control, and particularly relates to a temperature control method for vertical debugging of a satellite-borne phased array antenna. BACKGROUND

[0002] With the increasing diversification of functional requirements of satellite-borne phased array antennas in the fields of communication, remote sensing, navigation and the like, the system complexity of the satellite-borne phased array antennas is continuously improved, and the size, weight, power consumption and heat consumption of the antennas are also significantly increased. Before the satellite is launched, the satellite-borne phased array antenna needs to be debugged and tested in a vertical state for a long time in a microwave darkroom. However, the high power consumption of the antenna during the debugging process will cause a large amount of heat accumulation, and if the heat cannot be effectively dissipated in time, it may cause local overheating of the antenna, and even damage the key electronic components, thereby affecting the accuracy of the test results and the reliability of the antenna.

[0003] In view of the heat dissipation problem of the satellite-borne phased array antenna during ground testing, the existing technology such as patent CN 106304777 B proposes a fan unit-based air cooling heat dissipation device and method. The technology cools the antenna array surface by using forced air flow by arranging the fan unit at the front end of the array (and outside the antenna scanning angle range). This method is suitable for small or low heat consumption phased array antennas, but it has obvious limitations for large and high heat consumption antennas, which are specifically as follows:

[0004] 1. Insufficient air flow coverage: when the antenna array size is large, the air flow generated by the fan unit is difficult to uniformly cover the entire array, resulting in uneven temperature distribution of the array, which may cause thermal stress or local performance degradation, affecting the test accuracy.

[0005] 2. Internal heat dissipation failure: modern satellite-borne phased array antennas have high integration, and high heat consumption antennas usually rely on internal heat pipes for heat transfer rather than surface heat dissipation. The air cooling method can only cool the array surface or the back surface, and cannot effectively regulate and control the temperature of the internal components of the antenna, resulting in uncontrolled internal heat accumulation, which further threatens the service life of the device.

[0006] At present, there is no public report on the temperature control method for large and high heat consumption satellite-borne phased array antennas in the vertical debugging state. The traditional air cooling scheme cannot meet the requirements due to the above-mentioned defects, and the strict requirements of the aerospace field on the test environment (such as avoiding electromagnetic interference and ensuring test stability) further limit the selection of heat dissipation technology. Therefore, it is urgent to develop an efficient, uniform and controllable temperature control method suitable for large and high heat consumption satellite-borne phased array antennas in the vertical debugging state, to solve the problems of uneven air flow coverage, insufficient internal heat dissipation and the like in the existing technology, and to ensure the temperature stability and reliability of the antenna during the test process. SUMMARY

[0007] In order to solve the technical problems in the background art, the application provides a temperature control method for vertical debugging of a spaceborne phased array antenna.

[0008] The temperature control method for vertical debugging of the spaceborne phased array antenna provided by the application comprises the following steps:

[0009] S1, entering the spaceborne phased array antenna into a vertical state and making the heat pipe inside the spaceborne phased array antenna vertical to the ground;

[0010] S2, arranging liquid cooling plates at the top and bottom ends of the spaceborne phased array antenna respectively;

[0011] S3, heating the heat pipe inside the spaceborne phased array antenna to start the heat pipe;

[0012] S4, obtaining the temperature at both ends of the heat pipe and stopping heating the heat pipe when the temperature difference between both ends of the heat pipe reaches a set threshold value, and circulating the refrigerant to the liquid cooling plates arranged at the top and bottom ends of the spaceborne phased array antenna according to a set temperature to realize heat dissipation and temperature control of the spaceborne phased array antenna in the vertical debugging state.

[0013] Preferably, the starting mode of the heat pipe in step S3 comprises the following two modes:

[0014] Mode one: arranging a heating sheet at the lower end of the spaceborne phased array antenna and starting the heat pipe by heating through the heating sheet;

[0015] Mode two: circulating the heat medium to the liquid cooling plate arranged at the lower end of the spaceborne phased array antenna to start the heat pipe by heating through the heat medium.

[0016] Preferably, the liquid cooling plate is installed at the heat exchange interface between the spaceborne phased array antenna and the satellite.

[0017] Preferably, the liquid cooling plate arranged at the upper end of the spaceborne phased array antenna and the liquid cooling plate arranged at the lower end of the spaceborne phased array antenna are each provided with multiple liquid cooling plates.

[0018] Preferably, in step S2, an external heat pipe is further arranged at the heat exchange area at the top and bottom ends of the spaceborne phased array antenna, and the arrangement direction of the external heat pipe is perpendicular to the direction of the heat pipe inside the spaceborne phased array antenna; and the liquid cooling plate is installed on the external heat pipe.

[0019] Preferably, the heating sheet is installed on the liquid cooling plate at the lower end or on the external heat pipe at the lower end.

[0020] Preferably, the liquid cooling system circulates the refrigerant to the liquid cooling plate arranged at the upper end of the spaceborne phased array antenna and the liquid cooling plate arranged at the lower end of the spaceborne phased array antenna, the liquid cooling system comprises a liquid cooling unit and a liquid distributor, and the output pipeline of the liquid cooling unit is divided into two routes via the liquid distributor, one of which is connected to the liquid cooling plate at the upper end and the other of which is connected to the liquid cooling plate at the lower end.

[0021] Preferably, a control valve is installed in the pipeline connected to the upper end liquid cooling plate to control the opening and closing of the pipeline.

[0022] The present application achieves the purpose of temperature control of the vertical debugging state of the satellite-borne phased array antenna by arranging liquid cooling plates at the top and bottom ends of the satellite-borne phased array antenna in the vertical state, inputting refrigerant into the liquid cooling plates arranged at the top and bottom ends, and using the heat pipes inside the satellite-borne phased array antenna for heat transfer. Compared with the existing temperature control method, the present application has the advantages of large heat dissipation, high temperature controllability, and precise temperature control of the satellite-borne phased array antenna. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The liquid cooling plate installation schematic diagram on the satellite-borne phased array antenna in the temperature control method for vertical debugging of the satellite-borne phased array antenna proposed by the present application;

[0024] Figure 2 The heat pipe distribution schematic diagram inside the satellite-borne phased array antenna in the temperature control method for vertical debugging of the satellite-borne phased array antenna proposed by the present application;

[0025] Figure 3 The liquid delivery path schematic diagram of the liquid cooling system in the temperature control method for vertical debugging of the satellite-borne phased array antenna proposed by the present application;

[0026] Figure 4 The installation schematic diagram of the externally attached heat pipe on the satellite-borne phased array antenna in the temperature control method for vertical debugging of the satellite-borne phased array antenna proposed by the present application. DETAILED DESCRIPTION

[0027] REFERENCE Figures 1-3 The temperature control method for vertical debugging of the satellite-borne phased array antenna proposed by the present application, the satellite-borne phased array antenna includes an active mounting plate 1, an antenna unit 2 mounted on the active mounting plate 1, and a heat pipe 3 pre-buried inside the active mounting plate 1, and the temperature control method includes:

[0028] S1, the satellite-borne phased array antenna is brought into a vertical state, and the heat pipe 3 inside the satellite-borne phased array antenna is perpendicular to the ground;

[0029] S2, liquid cooling plates 4 are respectively installed at the heat exchange interfaces at the top and bottom ends of the satellite-borne phased array antenna, as shown in Figures 2-3 ;

[0030] S3, the heat pipe 3 inside the satellite-borne phased array antenna is heated to start the heat pipe 3, and the specific starting mode includes the following two modes:

[0031] The first mode is that a heating sheet 5 is arranged at the lower end of the satellite-borne phased array antenna, and the heat pipe 3 is started by heating the heating sheet 5. Specifically, the heating sheet 5 is arranged on the liquid cooling plate 4 at the lower end.

[0032] The second mode is that a heat medium is supplied to the liquid cooling plate 4 arranged at the lower end of the satellite-borne phased array antenna, and the heat pipe 3 is started by heating the heat medium.

[0033] S4, the temperature at both ends of the heat pipe 3 is obtained, and when the temperature difference between both ends of the heat pipe 3 is less than 1℃, the heating of the heat pipe is stopped, and the refrigerant is circulated and supplied to the liquid cooling plate 4 arranged at the top end and the bottom end of the satellite-borne phased array antenna according to the set temperature, and the heat is transferred by the started heat pipe 3, so as to ensure the rapid and uniform heat dissipation of the satellite-borne phased array antenna, thereby realizing the temperature control of the satellite-borne phased array antenna in the vertical debugging state.

[0034] Specifically, the liquid cooling system supplies the liquid cooling plate 4 arranged at the upper end of the satellite-borne phased array antenna and the liquid cooling plate 4 arranged at the lower end of the satellite-borne phased array antenna with the liquid at the required temperature, and the liquid cooling system comprises a liquid cooling unit 7 and a liquid distributor 8. The output pipeline of the liquid cooling unit 7 is divided into two routes through the liquid distributor 8, one of which is connected to the liquid cooling plate 4 at the upper end, and the other of which is connected to the liquid cooling plate 4 at the lower end.

[0035] Further, the pipeline connected to the liquid cooling plate 4 at the upper end is provided with a control valve 9 for controlling the opening and closing of the pipeline. When the heat pipe 3 is started in the second mode, the pipeline connected to the liquid cooling plate 4 at the upper end is cut off by the control valve 9, at this time, the liquid supply temperature of the liquid cooling unit 7 is increased to supply the liquid cooling plate 4 at the lower end, so as to start the heat pipe 3. When the temperature difference between both ends of the heat pipe 3 is less than 1℃, the control valve 9 is opened again, and the liquid supply temperature of the liquid cooling unit 7 is reduced, so as to output the liquid to the liquid cooling plates 4 at the upper end and the lower end.

[0036] In further embodiments, the liquid cooling plate 4 arranged at the upper end of the satellite-borne phased array antenna and the liquid cooling plate 4 arranged at the lower end of the satellite-borne phased array antenna are each provided with a plurality of liquid cooling plates, so as to facilitate installation and disassembly.

[0037] Reference Figure 4 In further embodiments, an external heat pipe 6 is further arranged at the heat exchange area at the top end and the bottom end of the satellite-borne phased array antenna, and the arrangement direction of the external heat pipe 6 is perpendicular to the direction of the internal heat pipe 3 of the satellite-borne phased array antenna. The liquid cooling plate 4 is arranged on the external heat pipe, the heating sheet 5 is arranged on the liquid cooling plate 4 at the lower end, or the heating sheet 5 is arranged on the external heat pipe 6, so as to accelerate the heat transfer in the transverse direction by the external heat pipe 6, and then reduce the number of liquid cooling plates 4 and heating sheets 5.

[0038] From the above, the application achieves the purpose of temperature control of the spaceborne phased array antenna in the vertical debugging state by arranging the liquid cooling plate 4 at the top and bottom of the spaceborne phased array antenna in the vertical state, inputting refrigerant into the liquid cooling plate 4 arranged at the top and bottom, and utilizing the heat pipe 3 in the spaceborne phased array antenna to transfer heat, compared with the existing temperature control mode, the application has the advantages of large heat dissipation, high temperature controllability and precise temperature control of the spaceborne phased array antenna.

[0039] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A temperature control method for vertical debugging of a spaceborne phased array antenna, characterized in that: include: S1. Put the satellite-borne phased array antenna into a vertical state, and make the heat pipe inside the satellite-borne phased array antenna perpendicular to the ground; S2. Liquid cooling plates are installed at the top and bottom of the onboard phased array antenna; S3, heating the heat pipe inside the satellite-borne phased array antenna to activate the heat pipe; S4. Obtain the temperatures at both ends of the heat pipe, and when the temperature difference between the two ends of the heat pipe reaches a set threshold, stop heating the heat pipe. At the same time, circulate refrigerant to the liquid cooling plates arranged at the top and bottom ends of the spaceborne phased array antenna according to the set temperature, so as to achieve heat dissipation and temperature control of the spaceborne phased array antenna in the vertical debugging state.

2. The temperature control method for vertical debugging of a spaceborne phased array antenna according to claim 1, characterized in that: The heat pipe startup methods in step S3 include the following two methods: Method 1: A heating plate is installed at the lower end of the satellite-borne phased array antenna to activate the heat pipe by heating it. Method 2: Heat medium is transported to the liquid cooling plate provided at the lower end of the satellite-borne phased array antenna, and the heat pipe is activated by heating with the heat medium.

3. The temperature control method for vertical debugging of a spaceborne phased array antenna according to claim 1, characterized in that: The liquid cooling plate is installed at the heat exchange interface between the onboard phased array antenna and the satellite.

4. The temperature control method for vertical debugging of a spaceborne phased array antenna according to claim 1, characterized in that: There are multiple liquid cooling plates arranged on the upper end of the satellite-borne phased array antenna and multiple liquid cooling plates arranged on the lower end of the satellite-borne phased array antenna.

5. The temperature control method for vertical debugging of a spaceborne phased array antenna according to claim 3, characterized in that: In step S2, external heat pipes are installed in the heat exchange areas at the top and bottom of the satellite-borne phased array antenna, and the arrangement direction of the external heat pipes is perpendicular to the direction of the internal heat pipes of the satellite-borne phased array antenna; and the liquid cooling plate is installed on the external heat pipes.

6. The temperature control method for vertical debugging of a spaceborne phased array antenna according to claim 5, characterized in that: The heating plate is installed on the liquid cooling plate at the lower end, or on the external heat pipe at the lower end.

7. The temperature control method for vertical debugging of a spaceborne phased array antenna according to any one of claims 1 to 6, characterized in that: The liquid cooling system transports refrigerant to the liquid cooling plate arranged at the upper end and the liquid cooling plate arranged at the lower end of the satellite-borne phased array antenna. The liquid cooling system includes a liquid cooling unit and a liquid separator. The output pipeline of the liquid cooling unit is divided into two paths through the liquid separator, one of which is connected to the liquid cooling plate at the upper end and the other is connected to the liquid cooling plate at the lower end.

8. The temperature control method for vertical debugging of a spaceborne phased array antenna according to claim 7, characterized in that: A control valve for controlling the on-off of the pipeline is installed in the pipeline connected to the upper liquid cooling plate.

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