Wide-temperature-zone regulation and control high-stability heat dissipation system for phased-array antenna

Abstract

The invention discloses a wide-temperature-range regulation and control high-stability heat dissipation system for a phased-array antenna. The system comprises a temperature equalization unit, a heat transfer unit and a heat dissipation unit, a phased-array antenna heating assembly is mounted on a first surface of the temperature equalizing unit, a heat transfer unit is mounted on a second surface of the temperature equalizing unit, and the first surface is opposite to the second surface; the temperature equalizing unit is a thermal control structure integrated design and is used for realizing the uniformity of the temperature of each part of the phased-array antenna heating assembly; heat of the phased-array antenna heating assembly is transmitted to the heat dissipation unit through the temperature equalizing unit and the heat transfer unit in sequence, and the heat dissipation unit dissipates the heat to the external environment. The system has the advantages of wide temperature interval regulation and control and high temperature stability, and meanwhile, the system is simple, light in weight, low in thermal control resource demand and high in reliability.

Description

Technical Field

[0001] This invention belongs to the field of spacecraft thermal control technology, and in particular relates to a wide-temperature-range regulated and highly stable heat dissipation system for spaceborne high-heat-dissipation phased array antennas. Background Technology

[0002] Active phased array antennas, characterized by high reliability, high gain, and reconfigurability, are playing an increasingly important role in space communication, environmental monitoring, and navigation, gradually becoming standard main payloads for spacecraft. As spaceborne active phased array antennas develop towards higher frequencies, higher integration, higher precision, and lighter weight, their heat flux density increases generation by generation. This directly leads to a significant increase in the temperature of the internal transmitter / receiver (T / R) components, severely affecting the phase control accuracy of the array surface. Furthermore, the complex and diverse thermal environments of different orbits (high and low Earth orbits), variations in the operating modes of phased array antennas, and uneven heat dissipation distribution cause significant temperature fluctuations and large temperature differences within the entire system during orbit. To eliminate the effects of temperature gradients and fluctuations, phased array antennas also face high requirements for overall temperature consistency and stability. Thermal control technology has become a key factor restricting the research of next-generation high-performance spaceborne phased array antennas. A single thermal control product is insufficient to meet their heat dissipation needs; therefore, it is essential to develop efficient thermal control systems to ensure the on-orbit performance of phased array antennas.

[0003] Given the complex and variable orbital thermal environment, the large variations in heat dissipation under different operating modes, and the uneven distribution of heat dissipation, existing publicly available technologies cannot simultaneously achieve high stability and wide-range control of the on-orbit temperature of phased array antennas. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned shortcomings and provide a wide-temperature-range adjustable and highly stable heat dissipation system for phased array antennas, solving the technical problem of existing heat dissipation systems simultaneously achieving high on-orbit temperature stability and wide-range temperature control for phased array antennas. This invention offers advantages such as wide temperature range control and high temperature stability, while also being simple, lightweight, requiring fewer thermal control resources, and exhibiting high reliability.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A wide-temperature-range regulated high-stability heat dissipation system for phased array antennas includes: a temperature equalization unit, a heat transfer unit, and a heat dissipation unit;

[0007] The phased array antenna heating element is mounted on the first surface of the temperature equalization unit, and the heat transfer unit is mounted on the second surface of the temperature equalization unit. The first surface and the second surface are opposite to each other. The temperature equalization unit is an integrated thermal control structure design, which is used to achieve temperature uniformity of all parts of the phased array antenna heating element. The heat of the phased array antenna heating element is transferred to the heat dissipation unit through the temperature equalization unit and the heat transfer unit in sequence. The heat dissipation unit dissipates the heat to the external environment.

[0008] Furthermore, the temperature equalization unit includes a first orthogonal heat pipe, a second orthogonal heat pipe, and a structural frame;

[0009] The first orthogonal heat pipe is embedded in the front of the structural frame;

[0010] The second orthogonal heat pipe is embedded in the back of the structural frame;

[0011] Several first orthogonal heat pipes and several second orthogonal heat pipes are perpendicular to each other;

[0012] The phased array antenna heating element is mounted on the surface of the first orthogonal heat pipe.

[0013] Furthermore, the mounting interface between the phased array antenna heating component and the first orthogonal heat pipe is coated with thermally conductive filler.

[0014] The connection between the first orthogonal heat pipe and the structural frame, and between the second orthogonal heat pipe and the structural frame, is by adhesive bonding or welding.

[0015] Furthermore, both the first and second orthogonal heat pipes are I-shaped aluminum-ammonia axial channel heat pipes; the structural frame is made of aluminum alloy; the coupling area between the first orthogonal heat pipe and the structural frame is planar, and the coupling area between the second orthogonal heat pipe and the structural frame is planar.

[0016] The thermally conductive filler coated at the mounting interface between the phased array antenna heating element and the first orthogonal heat pipe is an indium foil with a thickness of 0.08 to 0.12 mm.

[0017] Furthermore, several first orthogonal heat pipes are arranged at equal intervals, with a spacing of 40-50 mm, and the direction of the first orthogonal heat pipes is parallel to the length direction of the antenna;

[0018] Each group consists of m second orthogonal heat pipes, and there are n groups of second orthogonal heat pipes in total, where m ≥ 3 and n ≥ 2. The m second orthogonal heat pipes in each group are arranged at equal intervals, with a spacing of 30–35 mm.

[0019] Among the n sets of second orthogonal heat pipes, there are at least two sets of second orthogonal heat pipes disposed at both ends of the first orthogonal heat pipe.

[0020] Furthermore, the heat dissipation unit includes a second pipeline and a metal structural plate;

[0021] The second pipeline is coupled to the metal structure panel through pre-embedding; the second pipeline is a serpentine pipeline with equal spacing, and the metal structure panel is an aluminum-skinned aluminum honeycomb panel.

[0022] Furthermore, a pure aluminum clamp is welded to the outside of the second pipeline;

[0023] The clamps are coupled to the metal structural plate through pre-embedding;

[0024] The surface of the metal structure plate is covered with a thermal control and heat dissipation coating; the thermal control and heat dissipation coating is a glass-type optical secondary surface mirror.

[0025] Furthermore, the total area of ​​the metal structural panels is taken as the heat dissipation area A, which is determined according to the following formula:

[0026]

[0027] Where η is the area factor, Q 热耗 Heat dissipation of phased array antenna, in W, Q 外热流 Heat flux outside space, units: W, Q 其他热流 Infrared heat flux to surrounding components, unit: W, σ is the blackbody radiation constant, 5.67 × 10⁻⁶. -8 W / (m 2 ·K 4 ), where ε is the infrared emissivity of the metal structural plate, and T 金属结构板 The temperature is the thermodynamic temperature of the metal structural plate.

[0028] Furthermore, the heat transfer unit includes an evaporator, a first pipeline, a third pipeline, and a liquid receiver;

[0029] Both the evaporator and the liquid receiver are mounted on the surface of the second orthogonal heat pipe. Thermally conductive filler is applied between the evaporator and the second orthogonal heat pipe, and a heat insulation pad is provided between the liquid receiver and the second orthogonal heat pipe.

[0030] The first pipeline is used to connect the evaporator and the first end of the second pipeline, and the third pipeline is used to connect the liquid receiver and the second end of the second pipeline. The evaporator, the first pipeline, the second pipeline, the third pipeline and the liquid receiver are connected in sequence to form a closed loop, and the working fluid inside the closed pipeline is pure ammonia.

[0031] Furthermore, the thermally conductive filler between the evaporator and the second orthogonal heat pipe is thermally conductive silicone grease, and the thermal insulation pad between the liquid receiver and the second orthogonal heat pipe is a 4-6 mm thick polyimide thermal insulation pad.

[0032] Metal pads are provided between the upper and lower fins of the second orthogonal heat pipe and in the thermal coupling area between the evaporator and the second orthogonal heat pipe.

[0033] The metal pads are made of pure aluminum.

[0034] Furthermore, an electric heater and a temperature sensing element are attached to the surface of the liquid reservoir; the temperature sensing element is used to obtain the real-time temperature of the liquid reservoir, and the electric heater is used to heat the liquid reservoir when the real-time temperature of the liquid reservoir is lower than the lower limit of the target temperature range, so as to maintain the temperature of the liquid reservoir within the target temperature range.

[0035] An electric heater is installed on the surface of the second pipeline, which is used to maintain the temperature of the second pipeline above the freezing temperature of liquid ammonia.

[0036] Compared with the prior art, the present invention has at least one of the following advantages:

[0037] (1) This invention provides a wide temperature range control and high stability heat dissipation system for phased array antennas. By designing the heat dissipation area of ​​the heat dissipation unit and performing closed-loop control on the temperature of the heat transfer unit, the heat dissipation system can autonomously adapt to the influence of changes in heat dissipation of the phased array antenna and changes in external heat flow, while the temperature of the phased array antenna remains stable within a small range. The temperature level of the phased array antenna can be set as needed during its lifespan.

[0038] (2) The temperature equalization unit of the present invention is a structural thermal control integrated design with good overall temperature consistency. The failure of a single orthogonal heat pipe does not affect the temperature equalization function. The phased array antenna heating component is directly installed on the orthogonal heat pipe of the temperature equalization unit, which has high heat transfer efficiency and low thermal resistance.

[0039] (3) In the coupling area between the temperature equalization unit and the heat transfer unit of the present invention, a metal pad is added between the upper and lower fins of the orthogonal heat pipe, which enhances the thermal conductivity and mechanical properties of the heat dissipation system.

[0040] (4) The heat dissipation system of the present invention has a simple composition and requires few thermal control resources; the main components of the present invention, such as orthogonal heat pipes, loop heat pipes and radiant plates, are all passive thermal control products with high reliability.

[0041] (5) The heat dissipation system of the present invention is completely decoupled from the heat dissipation surface of the spacecraft body, which is highly flexible. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a wide-temperature-range adjustable and highly stable heat dissipation system for a phased array antenna according to the present invention;

[0043] Figure 2 This is a schematic diagram of an integrated thermal control and temperature equalization unit according to the present invention;

[0044] Figure 3 This is a schematic diagram of the coupling method between a temperature equalization unit and a heat transfer unit according to the present invention;

[0045] Figure 4 This is a schematic cross-sectional view of the coupling region between the temperature equalization unit and the heat transfer unit according to the present invention.

[0046] Figure 5This is a schematic cross-sectional view of a heat dissipation unit structure according to the present invention;

[0047] In the diagram: 1-Heating component; 100-Evaporator unit; 101-Structural frame; 102-First orthogonal heat pipe; 103-Second orthogonal heat pipe; 104-Metal pad; 201-Evaporator and liquid receiver assembly; 202-First pipeline; 203-Second pipeline; 204-Third pipeline; 300-Heat dissipation unit; 301-Aluminum skin; 302-Aluminum honeycomb core; 303-Clamping device. Detailed Implementation

[0048] The features and advantages of the present invention will become clearer and more apparent from the following detailed description.

[0049] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0050] This invention provides a wide-temperature-range controllable and highly stable heat dissipation system for phased array antennas. The main components are all high-reliability passive thermal control products, which have the advantages of wide temperature range control and high temperature stability. At the same time, the system is simple, lightweight, requires few thermal control resources, and has high reliability.

[0051] The present invention discloses a wide-temperature-range adjustable and highly stable heat dissipation system for phased array antennas, comprising a temperature equalization unit, a heat transfer unit, and a heat dissipation unit.

[0052] The temperature equalization unit is a structural and thermal control integrated design, including a first orthogonal heat pipe, a second orthogonal heat pipe and a structural frame. The three are integrated by gluing or welding, and the interface is strongly coupled.

[0053] Both the first and second orthogonal heat pipes are configured in multiple combinations to ensure overall temperature consistency of the temperature equalization unit under conditions of uneven heat dissipation and uneven external heat flow. This also improves the reliability of the temperature equalization unit, as damage to a single orthogonal heat pipe does not affect the system's temperature equalization function.

[0054] The first orthogonal heat pipe is embedded in the front of the structural frame, and the phased array antenna heating component is directly mounted on the surface of the first orthogonal heat pipe, with the mounting interface coated with thermally conductive filler.

[0055] The second orthogonal heat pipe is installed on the opposite side of the structural frame, and its arrangement direction is perpendicular to the first orthogonal heat pipe.

[0056] The heat transfer unit is a loop heat pipe, which includes an evaporator, a first pipe, a second pipe, a third pipe, and a liquid receiver, connected in sequence to form a closed loop. The shell material of the loop heat pipe is preferably stainless steel, and the internal working fluid is preferably pure ammonia.

[0057] The loop heat pipe evaporator is mounted on the surface of the second orthogonal heat pipe, with thermally conductive filler applied between them. In the coupling area between the loop heat pipe evaporator and the second orthogonal heat pipe, metal pads are added between the upper and lower fins of the second orthogonal heat pipe to enhance the thermal conductivity and mechanical properties of the heat dissipation system.

[0058] The loop heat pipe liquid receiver is installed on the surface of the structural frame with a heat insulation pad, and an electric heater and temperature sensing element are attached to the surface of the liquid receiver to achieve closed-loop control of the liquid receiver temperature.

[0059] The heat dissipation unit is a combination of a metal structural plate and a second pipeline. Preferably, the metal structural plate is an aluminum-skinned aluminum honeycomb panel, and the second pipeline is fitted with metal clamps. Preferably, the second pipeline is a serpentine pipeline with equal spacing, with a pipe spacing of 120mm.

[0060] The surface of the metal structural plate has a thermal control and heat dissipation coating, which is a low absorptivity-emissivity thermal control coating.

[0061] After the temperature of the heat transfer unit is set, the heat transfer unit and the heat dissipation unit will adjust the heat dissipation performance of the heat dissipation unit according to the changes in antenna heat dissipation and external heat flow to ensure the temperature stability of the equalization unit, thereby achieving high temperature stability of the phased array antenna. By setting different temperatures for the heat transfer unit, a wide range of temperature adjustment for the phased array antenna can be achieved. Specifically, the heat from the TR component is sequentially transferred to the first orthogonal heat pipe, the structural frame, and the second orthogonal heat pipe. The second orthogonal heat pipe is equipped with a liquid reservoir and an evaporator. The temperature of the liquid reservoir is maintained at a predetermined temperature, and the liquid reservoir does not exchange heat with the second orthogonal heat pipe. The evaporator absorbs heat, and the liquid ammonia in the evaporator is converted into ammonia gas. The ammonia gas passes through the first pipe and then enters the second pipe to exchange heat with the environment. After heat exchange, the ammonia gas is converted into liquid ammonia. The liquid ammonia passes through the third pipe and enters the liquid reservoir, and then enters the evaporator from the liquid reservoir to complete the cycle. The temperature of the phased array antenna is regulated by adjusting the temperature of the liquid reservoir. Specifically, the liquid reservoir and evaporator are integrated into a single structure. During normal operation, the liquid reservoir temperature is 1-2°C lower than the evaporator temperature. The evaporator, second orthogonal heat pipe, structural frame, first orthogonal heat pipe, and TR assembly are thermally coupled to each other. When the phased array antenna heat dissipation reaches its maximum, the temperature difference between the evaporator and the TR assembly is 8-10°C. Therefore, there is a temperature difference of 9-12°C between the liquid reservoir and the phased array antenna TR assembly. Considering the influence of changes in the on-orbit thermal environment and the phased array antenna heat dissipation, a temperature difference of over 20°C between the liquid reservoir and the phased array antenna TR assembly is sufficient to ensure a stable TR assembly temperature. The preferred temperature range for the phased array antenna TR assembly is 10-50°C, therefore, the preferred liquid reservoir temperature is -10-30°C.

[0062] In summary, this invention provides a wide-temperature-range controllable and highly stable heat dissipation system for phased array antennas, comprising a temperature equalization unit, a heat transfer unit, and a heat dissipation unit. By designing the heat dissipation area of ​​the heat dissipation unit and implementing closed-loop temperature control of the heat transfer unit, a wide temperature range and high stability control of the phased array antenna temperature are achieved. The temperature equalization unit features an integrated thermal control structure design, ensuring overall temperature consistency even under conditions of uneven heat dissipation and uneven external heat flow. Metal pads are placed between the upper and lower fins of the orthogonal heat pipes in the thermal coupling region between the temperature equalization unit and the heat transfer unit, simultaneously enhancing the thermal conductivity and mechanical properties of the heat dissipation system.

[0063] Example

[0064] This embodiment focuses on a high heat-dissipation phased array antenna for GEO orbit, which is 1500mm long and 1200mm wide. The antenna is continuously powered on in orbit, operating in both standby and active modes. The heat dissipation is 600W in standby mode and 1800W in active mode. The heat dissipation distribution is extremely uneven, with 60% of the heat dissipation concentrated in the central area. The internal T / R component temperature range is required to be -10℃ to 65℃, with a temperature gradient not exceeding 8℃.

[0065] According to the present invention, a wide-temperature-range adjustable and highly stable heat dissipation system for phased array antennas includes a temperature equalization unit 100, a heat transfer unit, and a heat dissipation unit 300. See attached diagram for details. Figure 1 .

[0066] The temperature equalization unit 100 features an integrated structural and thermal control design, comprising a first orthogonal heat pipe 102, a second orthogonal heat pipe 103, and a structural frame 101. These three components are bonded together, with a strongly coupled interface. (See attached reference.) Figure 2 .

[0067] The first orthogonal heat pipe is embedded in the front of the structural frame and bonded together with silicone rubber. The first orthogonal heat pipe is preferably an I-shaped 30×12 aluminum-ammonia axial channel heat pipe, with 24 first orthogonal heat pipes arranged along the length of the antenna. Preferably, the first orthogonal heat pipes are evenly spaced, with a center-to-center spacing of 45mm. The phased array antenna heating element 1 is directly mounted on the surface of the first orthogonal heat pipe, as shown in the attached figure. Figure 3 The interface is coated with a thermally conductive filler, preferably a 0.1 mm thick indium foil.

[0068] To reduce the variety of thermal control products, the second orthogonal heat pipe is preferably an I-shaped 30×12 aluminum-ammonia axial channel heat pipe, arranged perpendicular to the first orthogonal heat pipe, and installed on the opposite side of the structural frame. Silicone rubber is used to bond the second orthogonal heat pipe to the structural frame as a single unit. A total of 12 second orthogonal heat pipes are installed, divided into 4 groups of 3. Two groups of second orthogonal heat pipes are installed at each end of the antenna's length.

[0069] Preferably, the three second orthogonal heat pipes in each group are installed at equal intervals, with a center-to-center spacing of 31 mm.

[0070] Preferably, the structural frame is made of aluminum alloy, and the structural frame of the coupling region with the second orthogonal heat pipe is a planar structure with the thickness as thin as possible while also taking into account mechanical requirements. Preferably, the thickness of the coupling region plane is 0.5 mm to reduce the thermal resistance between the first and second orthogonal heat pipes.

[0071] The heat transfer unit is a loop heat pipe, which includes an evaporator, a first pipe 202, a second pipe 203, a third pipe 204, and a liquid receiver, connected sequentially to form a closed loop. Figure 3 The system includes an evaporator and a liquid receiver assembly 201. The casing material of the loop heat pipe is preferably stainless steel, and the internal working fluid is preferably pure ammonia. The first pipe 202, the second pipe 203, and the third pipe 204 are preferably stainless steel pipes with an inner diameter of 4 mm and a wall thickness of 1 mm.

[0072] The loop heat pipe evaporator is mounted on the surface of the second orthogonal heat pipe in the heat exchange unit. Preferably, the width of the evaporator is consistent with the total width of the three second orthogonal heat pipes in one group, which is 92mm. (Refer to the attached document.) Figure 3 A thermally conductive filler is applied between the evaporator and the second orthogonal heat pipe. Preferably, the thermally conductive filler is thermally conductive silicone grease.

[0073] To enhance the thermal conductivity, heat transfer, and heat dissipation system's mechanical performance between the heat exchange unit and the heat distribution unit, a metal pad 104 is added between the upper and lower fins of the second orthogonal heat pipe in the thermal coupling region between the evaporator and the second orthogonal heat pipe. (See attached diagram.) Figure 4 Preferably, the pad is made of high thermal conductivity pure aluminum.

[0074] The loop heat pipe reservoir is installed on the surface of the structural frame using a heat insulation pad. Preferably, the heat insulation pad is made of polyimide and has a thickness of 5mm.

[0075] An electric heater and a temperature sensing element are attached to the surface of the loop heat pipe receiver to achieve closed-loop temperature control. Preferably, a thin-film electric heater is used, and an MF501 thermistor is used as the temperature sensing element.

[0076] To improve the reliability of the heat dissipation system, two sets of loop heat pipes are installed on each group of second orthogonal heat pipes.

[0077] The heat dissipation unit 300 is a combination of a metal structural plate and the pipeline 2. Preferably, the metal structural plate is an aluminum-skinned aluminum honeycomb panel, including an aluminum skin 301 and an aluminum honeycomb core 302. A high thermal conductivity pure aluminum clamp 303 is welded to the outside of the second pipeline. The clamp width is preferably 30mm to enhance the heat conduction and heat exchange between the pipeline and the metal structural plate, thereby improving the heat dissipation efficiency of the heat dissipation unit. Preferably, the second pipeline and its clamp are coupled to the metal structural plate by pre-embedding, as shown in the attached figure. Figure 5 The second pipeline is a serpentine pipeline with equal spacing, with a pipe spacing of 120mm.

[0078] An electric heater is installed on the surface of the second pipeline to maintain its temperature and prevent the liquid ammonia inside from freezing. The electric heater has a power of 200W.

[0079] Preferably, each group of second orthogonal heat pipes is equipped with a heat dissipation unit, and the heat dissipation area of ​​the metal structure plate is 3m². 2 In this embodiment, the phased array antenna is set to a total length of 12m. 2 The heat dissipation surface area is determined as follows:

[0080]

[0081] The surface of the metal structural plate has a thermal control and heat dissipation coating. Preferably, the thermal control and heat dissipation coating is a glass-type optical secondary surface mirror (OSR).

[0082] During on-orbit operation, the electric heater of a single loop heat pipe reservoir has a power of 40W. The temperature control threshold can be set within the range of 0 to 40℃ to ensure that the temperature of the T / R components inside the phased array antenna does not exceed the upper limit of 65℃. Preferably, the temperature control threshold of the reservoir heater is [20℃, 21℃]. During its 10-year lifespan, regardless of whether the phased array antenna is in standby or active mode, the temperature of the T / R components inside the antenna can be maintained at 40±1℃.

[0083] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.

[0084] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A wide-temperature-range regulated, high-stability heat dissipation system for phased array antennas, characterized in that, include: Temperature equalization unit (100), heat transfer unit and heat dissipation unit (300); The phased array antenna heating element is mounted on the first surface of the temperature equalization unit (100), and the heat transfer unit is mounted on the second surface of the temperature equalization unit (100). The first surface and the second surface are opposite to each other. The temperature equalization unit (100) is an integrated thermal control structure design, used to achieve temperature uniformity of the phased array antenna heating element. The heat of the phased array antenna heating element is transferred to the heat dissipation unit (300) through the temperature equalization unit (100) and the heat transfer unit in sequence. The heat dissipation unit (300) dissipates the heat to the external environment.

2. The wide-temperature-range regulated high-stability heat dissipation system for phased array antennas according to claim 1, characterized in that, The temperature equalization unit (100) includes a first orthogonal heat pipe (102), a second orthogonal heat pipe (103), and a structural frame (101); The first orthogonal heat pipe (102) is embedded in the front of the structural frame (101); The second orthogonal heat pipe (103) is embedded in the back of the structural frame (101); Several first orthogonal heat pipes (102) and several second orthogonal heat pipes (103) are perpendicular to each other; The phased array antenna heating element is mounted on the surface of the first orthogonal heat pipe (102); The mounting interface between the phased array antenna heating component and the first orthogonal heat pipe (102) is coated with thermally conductive filler. The connection between the first orthogonal heat pipe (102) and the structural frame (101), and between the second orthogonal heat pipe (103) and the structural frame (101), is by adhesive bonding or welding.

3. The wide-temperature-range regulated high-stability heat dissipation system for phased array antennas according to claim 2, characterized in that, The first orthogonal heat pipe (102) and the second orthogonal heat pipe (103) both adopt I-shaped aluminum ammonia axial channel heat pipes; the structural frame (101) is made of aluminum alloy; the coupling area between the first orthogonal heat pipe (102) and the structural frame (101) is planar, and the coupling area between the second orthogonal heat pipe (103) and the structural frame (101) is planar. The thermally conductive filler coated at the mounting interface between the phased array antenna heating component and the first orthogonal heat pipe (102) is an indium foil with a thickness of 0.08 to 0.12 mm.

4. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 2, characterized in that, Several first orthogonal heat pipes (102) are arranged at equal intervals, with a spacing of 40-50 mm. The direction of the first orthogonal heat pipes (102) is parallel to the length direction of the antenna. The second orthogonal heat pipes (103) are arranged in groups of m, and there are n groups of second orthogonal heat pipes (103) in total, where m≥3 and n≥2. The m second orthogonal heat pipes (103) in each group are arranged at equal intervals with a spacing of 30-35mm. Among the n sets of second orthogonal heat pipes (103), at least two sets of second orthogonal heat pipes (103) are disposed at both ends of the first orthogonal heat pipe (102).

5. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 2, characterized in that, The heat dissipation unit (300) includes a second conduit (203) and a metal structural plate; The second pipeline (203) is coupled to the metal structure plate by pre-embedding; the second pipeline (203) is a serpentine pipeline with equal spacing, and the metal structure plate is an aluminum-skinned aluminum honeycomb plate.

6. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 5, characterized in that, The outer side of the second pipeline (203) is welded with a pure aluminum clamp (303); The clamp (303) is coupled to the metal structural plate by pre-embedding; The surface of the metal structure plate is covered with a thermal control and heat dissipation coating; the thermal control and heat dissipation coating is a glass-type optical secondary surface mirror.

7. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 6, characterized in that, The total area of ​​the metal structural panels is taken as the heat dissipation area A, which is determined according to the following formula: Where η is the area factor, Q 热耗 The heat dissipation of the phased array antenna is expressed in W and Q. 外热流 Heat flux outside space, measured in W, Q 其他热流 The infrared heat flux of surrounding components is expressed in W, and σ is the blackbody radiation constant, σ = 5.67 × 10⁻⁶. -8 W / (m 2 ·K 4 ), where ε is the infrared emissivity of the metal structural plate, and T 金属结构板 The temperature is the thermodynamic temperature of the metal structural plate.

8. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 5, characterized in that, The heat transfer unit includes an evaporator, a first pipe (202), a third pipe (204), and a liquid receiver; The evaporator and the liquid receiver are both installed on the surface of the second orthogonal heat pipe (103). Thermally conductive filler is applied between the evaporator and the second orthogonal heat pipe (103), and a heat insulation pad is provided between the liquid receiver and the second orthogonal heat pipe (103). The first pipeline (202) is used to connect the evaporator and the first end of the second pipeline (203), and the third pipeline (204) is used to connect the liquid reservoir and the second end of the second pipeline (203). The evaporator, the first pipeline (202), the second pipeline (203), the third pipeline (204) and the liquid reservoir are connected in sequence to form a closed loop. The working fluid inside the closed pipeline is pure ammonia.

9. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 8, characterized in that, The thermally conductive filler between the evaporator and the second orthogonal heat pipe (103) is thermally conductive silicone grease, and the thermal insulation pad between the liquid reservoir and the second orthogonal heat pipe (103) is a 4-6 mm thick polyimide thermal insulation pad. The thermal coupling area between the evaporator and the second orthogonal heat pipe, and a metal pad (104) is provided between the upper and lower fins of the second orthogonal heat pipe (103); The metal pad (104) is made of pure aluminum.

10. A wide-temperature-range regulated, high-stability heat dissipation system for a phased array antenna according to claim 9, characterized in that, An electric heater and a temperature sensing element are attached to the surface of the liquid reservoir. The temperature sensing element is used to obtain the real-time temperature of the liquid reservoir, and the electric heater is used to heat the liquid reservoir when the real-time temperature of the liquid reservoir is lower than the lower limit of the target temperature range, so as to maintain the temperature of the liquid reservoir within the target temperature range. An electric heater is provided on the surface of the second pipeline (203), which is used to maintain the temperature of the second pipeline (203) above the freezing temperature of liquid ammonia.

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