Liquid cooling plate self-pressure-relief structure of active phased-array antenna and phased-array antenna

Abstract

The embodiment of the invention provides a liquid cooling plate self-pressure-relief structure of an active phased-array antenna and the phased-array antenna, and relates to the technical field of microwave and millimeter wave wireless communication, and the structure comprises a liquid cooling plate; the liquid cooling plate is provided with a liquid cooling flow channel and a pressure relief cavity communicated with the liquid cooling flow channel; an opening of the pressure relief cavity is communicated with the outside, a cover plate is mounted on the opening of the pressure relief cavity, and the thickness of the thinnest part of the cover plate is smaller than the minimum wall thickness of the liquid cooling flow channel. According to the technical scheme, the bulge position of the liquid cooling plate is controlled through the established pressure relief cavity, rapid maintenance of the bulge area is achieved through the arranged cover plate, the cold plate is prevented from being scrapped and disassembled, and therefore large economic and benefit losses caused by bulge of the liquid cooling plate are finally eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of microwave and millimeter wave wireless communication, and in particular to a liquid cooling plate self-depressurization structure of an active phased array antenna and a phased array antenna. Background Art

[0002] When the high-power phased array antenna is undergoing liquid cooling and heat dissipation testing, its liquid cooling plate is connected to the external liquid cooling source through a quick connector. When the liquid cooling is disconnected, the quick connectors of the water inlet and outlet are in a closed state (to prevent leakage), resulting in a closed state inside the liquid cooling plate filled with coolant. Ethylene glycol antifreeze is currently widely used as a coolant in the industry. Although it prevents the problem of cold plate bulging caused by volume expansion due to low-temperature freezing, its volume expansion pressure at high temperatures cannot be ignored. During the test, accidents often occur in which the liquid cooling plate bulges at the flow channel due to excessive internal pressure after high-temperature power-on testing and environmental testing. This bulging can easily cause the TR module circuit fixed on the cold plate to be damaged or the shell to be severely deformed, and the liquid cooling plate also needs to be replaced and scrapped. Both the TR module and the liquid cooling plate are high-value components. When replacing the TR module and the liquid cooling plate, a lot of time is also required for disassembly and testing. This accident will cause great losses in both economy and benefits.

[0003] Although blowing liquid after the liquid cooling is disconnected can effectively prevent such accidents, such accidents often occur due to human negligence or insufficient blowing. There is an urgent need for a simple way to solve the problem of losses caused by bulging of the liquid cooling plate. Summary of the invention

[0004] The embodiments of the present application provide a liquid cooling plate self-depressurization structure of an active phased array antenna and a phased array antenna to solve the problems existing in the prior art.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0006] According to a first aspect of an embodiment of the present application, there is provided a liquid cooling plate self-depressurization structure of an active phased array antenna, comprising: a liquid cooling plate; The liquid cooling plate is provided with a liquid cooling channel and a pressure relief cavity communicated with the liquid cooling channel; The opening of the pressure relief chamber is communicated with the outside, and a cover plate is installed on the opening of the pressure relief chamber. The thickness of the cover plate at the thinnest part is smaller than the minimum wall thickness of the liquid cooling channel.

[0007] In some embodiments of the present application, based on the aforementioned solution, a strain sensor is mounted on the upper surface of the cover plate, and the strain sensor is connected to a control motherboard of the phased array antenna.

[0008] In some embodiments of the present application, based on the aforementioned solution, the thickness of the middle portion of the cover plate is smaller than the thickness around the cover plate.

[0009] In some embodiments of the present application, based on the aforementioned solution, the cover plate is sealedly connected to the opening of the pressure relief chamber.

[0010] In some embodiments of the present application, based on the aforementioned solution, a mounting groove is provided on the periphery of the opening of the pressure relief chamber, and a sealing ring for sealing the cover plate is installed in the mounting groove.

[0011] In some embodiments of the present application, based on the aforementioned solution, the cover plate is detachably mounted on the opening of the pressure relief chamber.

[0012] In some embodiments of the present application, based on the aforementioned solution, the cover plate is installed on the opening of the pressure relief chamber by means of locking screws.

[0013] In some embodiments of the present application, based on the aforementioned solution, the structure is further provided with a liquid cooling quick connector for sealing the antifreeze liquid in the liquid cooling channel.

[0014] In some embodiments of the present application, based on the aforementioned solution, the pressure relief chamber is disposed in a blank area on the liquid cooling plate where no components are installed and there is free space above.

[0015] According to a second aspect of an embodiment of the present application, a phased array antenna is provided, comprising the structure as described in the first aspect.

[0016] The technical solution of the present application controls the position of the bulging of the liquid cooling plate by establishing a pressure relief chamber, and realizes rapid maintenance of the bulging area by setting a cover plate, thereby preventing the cold plate from being scrapped and disassembled, thereby ultimately eliminating the significant economic and benefit losses caused by the bulging of the liquid cooling plate.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 A structural schematic diagram of a liquid cooling plate self-depressurization structure of an active phased array antenna according to an embodiment of the present application is shown.

[0019] Figure 2 A schematic diagram showing the position of the internal pressure relief cavity of the liquid cooling plate relative to the liquid cooling channel according to an embodiment of the present application is shown.

[0020] Figure 3 An exploded schematic diagram of the position of the pressure relief chamber according to an embodiment of the present application is shown.

[0021] Figure 4 A cross-sectional schematic diagram showing the position of the pressure relief chamber according to an embodiment of the present application is shown.

[0022] Description of Reference Numerals 1-liquid cooling plate, 2-TR module, 3-cover plate, 4-strain sensor, 5-locking screw, 6-liquid cooling quick connector, 7-liquid cooling channel, 8-pressure relief chamber, 9-sealing ring, 10-installation groove, 11-middle part of the cover plate, 12-liquid cooling channel wall. DETAILED DESCRIPTION

[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0024] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Some embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0027] In order to solve the technical problems existing in the prior art, the embodiment of the present application provides a liquid cooling plate self-depressurization structure of an active phased array antenna. Specifically, the structure includes: a liquid cooling plate; The liquid cooling plate is provided with a liquid cooling channel and a pressure relief cavity communicated with the liquid cooling channel; The opening of the pressure relief chamber is communicated with the outside, and a cover plate is installed on the opening of the pressure relief chamber. The thickness of the cover plate at the thinnest part is smaller than the minimum wall thickness of the liquid cooling channel.

[0028] It can be understood that the thickness of the thinnest part of the cover plate is less than the minimum wall thickness of the liquid cooling channel, which means that the cover plate is the thinnest position inside the liquid cooling plate, so when the internal pressure of the liquid cooling plate is too large, the pressure is guided to this cover plate position and released in the form of bulging. Therefore, the liquid cooling channel is protected from pressure relief and no longer bulges, thereby ensuring that the TR component installed on the upper part of the liquid cooling channel is also prevented from deformation or damage.

[0029] In some feasible embodiments, based on the above solution, a strain sensor is mounted on the upper surface of the cover plate, and the strain sensor is connected to the control motherboard of the phased array antenna.

[0030] It can be understood that the strain sensor can be connected to the control motherboard of the phased array antenna through leads. When the cover plate is bulging, the strain sensor can transmit this information to the control motherboard, thereby realizing an alarm or shutdown after the cover plate is bulged and deformed, protecting the entire antenna and repairing the liquid cooling plate (replacing the cover plate) in time.

[0031] In some feasible embodiments, based on the above-mentioned solution, the thickness of the middle portion of the cover plate is smaller than the thickness around the cover plate.

[0032] It is understandable that the purpose of designing the cover plate to be thin in the middle and thick around is to ensure the connection strength between the cover plate and the pressure relief chamber while guiding the position of the pressure relief bulge to the middle of the cover plate.

[0033] In some feasible embodiments, based on the above-mentioned solution, the cover plate is sealedly connected to the opening of the pressure relief chamber.

[0034] It is understandable that the seal can ensure that the pressure relief chamber does not leak antifreeze.

[0035] In some feasible embodiments, based on the above-mentioned solution, a mounting groove is provided on the periphery of the opening of the pressure relief chamber, and a sealing ring for sealing the cover plate is installed in the mounting groove.

[0036] In some feasible embodiments, based on the above-mentioned solution, the cover plate is detachably mounted on the opening of the pressure relief chamber.

[0037] It can be understood that the cover plate is detachably mounted on the opening of the pressure relief chamber, which can facilitate replacement of the cover plate after the cover plate is bulged, thereby completing maintenance of the liquid cooling plate.

[0038] In some feasible embodiments, based on the aforementioned solution, the cover plate is mounted on the opening of the pressure relief chamber by means of locking screws.

[0039] In some feasible embodiments, based on the above-mentioned solution, the structure is further provided with a liquid cooling quick connector for sealing the antifreeze liquid in the liquid cooling channel.

[0040] In some feasible embodiments, based on the aforementioned solution, the pressure relief chamber is disposed in a blank area on the liquid cooling plate where no components are installed and there is free space above.

[0041] It should be noted that, in this embodiment, the number of pressure relief chambers needs to be determined according to the available area of ​​the liquid cooling plate, and the volume of the pressure relief chamber needs to be determined according to the actual liquid storage volume of the liquid cooling channel.

[0042] For example, see Figure 1 , shows a structural schematic diagram of a liquid cooling plate self-depressurization structure of an active phased array antenna according to an embodiment of the present application.

[0043] See also Figure 2 , shows a schematic diagram of the position of the internal pressure relief cavity of the liquid cooling plate relative to the liquid cooling channel according to an embodiment of the present application.

[0044] See also Figure 3 , showing a schematic diagram of an explosion of the pressure relief chamber position according to an embodiment of the present application.

[0045] See also Figure 4 , showing a cross-sectional schematic diagram of the position of the pressure relief chamber according to an embodiment of the present application.

[0046] like Figure 1 and Figure 2 As shown, the liquid cooling plate self-depressurization structure of an active phased array antenna provided in this example includes a liquid cooling plate 1, a liquid cooling channel 7 is arranged inside the liquid cooling plate 1, and a plurality of TR modules 2 are arranged on the surface of the liquid cooling plate 1, and the TR modules 2 are located above the liquid cooling channel 7. A pressure relief chamber 8 is opened in a blank area of ​​the liquid cooling plate 1 where no device is installed. In this example, a total of two pressure relief chambers are arranged. A cover plate 3 is installed at the opening of the pressure relief chamber 8, and the cover plate 3 is detachably installed at the opening of the pressure relief chamber 8 by means of a locking screw 5. A strain sensor 4 is arranged on the upper surface of the cover plate 3 for detecting whether the cover plate 3 is deformed. The lead of the strain sensor 4 is connected to the control motherboard of the phased array antenna so as to transmit the deformation information to the control motherboard. A liquid cooling quick connector 6 is also arranged on the liquid cooling plate 1, and the liquid cooling quick connector 6 is used to seal the antifreeze liquid in the liquid cooling channel 7.

[0047] like Figure 3 As shown, a mounting groove 10 for mounting a sealing ring 9 is provided around the opening of the pressure relief chamber 8. When installing the cover plate 3, the sealing ring 9 is first placed in the mounting groove 10, and then the cover plate 3 is mounted at the opening of the pressure relief chamber 8 by means of locking screws 5.

[0048] like Figure 4 As shown, the pressure relief chamber 8 and the liquid cooling channel 7 are in a connected state, and the middle portion 11 of the cover plate is thinner than the liquid cooling channel wall 12 at the thinnest portion of the liquid cooling channel 7 .

[0049] When the antenna is subjected to temperature-raising operations (environmental testing, repair, etc.), the internal pressure of the liquid-cooling channel 7 rises sharply. Since the static pressure inside the cavity is equal everywhere, the internal pressure of the liquid-cooling channel 7 and the pressure relief chamber 8 connected thereto are consistent. A cover plate 3 is provided on the upper part of the pressure relief chamber 8. Since the middle part 11 of the cover plate is smaller than the liquid-cooling channel wall 12, when the internal pressure is large enough, a bulge will first be caused at the middle part 11 of the cover plate, thereby realizing self-pressure relief after the volume of the inner cavity is expanded, thereby avoiding deformation of the liquid-cooling channel wall 12. When the cover plate 3 is deformed, the strain sensor 4 mounted on its upper part also undergoes tensile deformation at the same time, and its internal resistance value changes. This signal is transmitted to the control motherboard for control judgment, thereby realizing the function of alarm or shutdown.

[0050] The sealing assembly method of the pressure relief chamber 8 and the cover plate 3 is not limited to the sealing method of the sealing ring. The principle is to ensure that the liquid cooling plate 1 is not damaged, the sealing of the pressure relief chamber 8 and the connection strength between the edge of the cover plate and the pressure relief chamber are ensured, and the cover plate 3 can be replaced multiple times. For example, it can also be sealed by laser welding.

[0051] In summary, the liquid cooling plate self-depressurization structure of an active phased array antenna provided in the embodiment of the present application has the following advantages: 1) Eliminates the cost of replacing materials due to damage or severe deformation of TR modules or devices; 2) Eliminates the material cost of replacing the liquid cooling plate; 3) It eliminates the time and labor costs associated with replacing the above components and testing the entire machine after replacement.

[0052] Based on the same inventive concept, an embodiment of the present application further provides a phased array antenna, which includes a liquid cooling plate self-depressurization structure of an active phased array antenna as described in any of the above embodiments.

[0053] The antenna using this structure can save material costs, maintenance costs, labor costs, etc.

[0054] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. It should be understood that the present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A liquid cooling plate self-depressurization structure for an active phased array antenna, characterized in that: include: Liquid cooling plate; The liquid cooling plate is provided with a liquid cooling channel and a pressure relief cavity communicated with the liquid cooling channel; The opening of the pressure relief chamber is communicated with the outside, and a cover plate is installed on the opening of the pressure relief chamber. The thickness of the cover plate at the thinnest part is smaller than the minimum wall thickness of the liquid cooling channel.

2. The structure according to claim 1, characterized in that: A strain sensor is mounted on the upper surface of the cover plate, and the strain sensor is connected to a control motherboard of the phased array antenna.

3. The structure according to claim 1, characterized in that: The thickness of the middle portion of the cover plate is smaller than the thickness of the periphery of the cover plate.

4. The structure according to claim 1, characterized in that The cover plate is sealed to the opening of the pressure relief chamber.

5. The structure according to claim 4, characterized in that: An installation groove is provided on the periphery of the opening of the pressure relief chamber, and a sealing ring for sealing the cover plate is installed in the installation groove.

6. The structure according to claim 1, characterized in that The cover plate is detachably mounted on the opening of the pressure relief chamber.

7. The structure according to claim 6, characterized in that The cover plate is mounted on the opening of the pressure relief chamber by means of locking screws.

8. The structure according to claim 1, characterized in that The structure is also provided with a liquid cooling quick connector for sealing the antifreeze liquid in the liquid cooling channel.

9. The structure according to claim 1, characterized in that The pressure relief chamber is arranged in a blank area of ​​the liquid cooling plate where no components are installed and the upper part is a free space.

10. A phased array antenna, characterized in that: The method comprises the structure as claimed in any one of claims 1 to 9.

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