Double-layer protection tensile membrane antenna housing system

Abstract

The invention discloses a double-layer protection tensile membrane antenna housing system which comprises an antenna array plane framework, an outer layer membrane housing part, an inner layer membrane housing part and an inflation pressurization assembly are arranged on the antenna array plane framework, and a sealed air cavity is formed between the outer layer membrane housing part and the inner layer membrane housing part. And the inflating and pressurizing assembly is used for inflating and pressurizing the sealed air cavity. The invention relates to the technical field of radar radomes. According to the double-layer protection tensile membrane antenna housing system, a double-layer protection membrane structure is formed by the outer-layer membrane housing piece and the inner-layer membrane housing piece, if the outer-layer membrane housing is accidentally damaged, the inner-layer membrane serves as a secondary protection structure to ensure that internal electronic equipment is prevented from being eroded by wind and rain, and the double-protection effect is achieved; part of external wind load can be counteracted through compression of gas in the cavity, the rigidity of the antenna housing is improved, clean and dry air is continuously supplemented into the cavity of the antenna housing in cooperation with the inflation pressurization assembly, and long-term stable use of the antenna housing is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of radar antenna covers, and in particular to a double-layer protective tensile membrane antenna cover system. Background Art

[0002] The radome is an electromagnetic window that protects the antenna, shielding it from harsh external environments while ensuring electromagnetic wave transmission. The radome's wave transmission performance and structural strength are mutually constrained, and extreme wave transmission performance often results in reduced structural reliability.

[0003] Common radomes can be categorized by their structural form, including space truss radomes, dielectric shell radomes, and inflatable radomes. Tensile membrane structures offer excellent wave-transmitting performance. Their main structure is a flexible dielectric membrane, with no skeletal support within the wave-transmitting area of ​​the radome. However, since the dielectric layer is approximately 1mm thick, thinner than traditional radomes, their wind resistance is significantly lower. Furthermore, if the radome is accidentally damaged, the antenna and other equipment within it are directly exposed to the harsh environment, resulting in significant economic losses. Therefore, a double-layer protective tensile membrane radome system has been proposed, offering both high wind resistance and reliability. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a double-layer protective tensile membrane antenna cover system, which solves the problem of poor wind resistance of the existing tensile membrane structure antenna cover.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a double-layer protective tensile membrane antenna cover system, including an antenna array frame, an outer membrane cover, an inner membrane cover and an inflation and pressurization component are provided on the antenna array frame, a sealed air cavity is formed between the outer membrane cover and the inner membrane cover, and the inflation and pressurization component is used to inflate and pressurize the sealed air cavity.

[0006] The present invention is further configured as follows: the outer film cover comprises an outer film cover body and two structural arches, the outer film cover body is laid on the outer periphery of the two structural arches, the four edges of the outer film cover body are sewn together to form a raised portion, and the outer periphery of the raised portion is clamped with a tension strip; The two structural arches are respectively fixedly mounted on both sides of the top of the antenna array frame.

[0007] The present invention is further configured as follows: a slide groove is provided at the bottom of the tensioning strip, a tensioning plate is fixedly installed on the periphery of the antenna array frame, an adjusting bolt is passed through and slidably installed on the top of the tensioning plate, the head of the adjusting bolt is in sliding contact with the inside of the slide groove, and a fastening nut is sleeved and threadedly installed on the periphery of the adjusting bolt and on the upper and lower sides of the tensioning plate.

[0008] The present invention is further configured as follows: a waterproof board is fixedly installed on the periphery of the antenna array frame and at the bottom of the tensioning plate, and a waterproof membrane is heat-sealed and fixed on the periphery of the four edge portions of the outer membrane cover, and the waterproof membrane is fixedly installed on the bottom of the waterproof board through a waterproof membrane pressing plate.

[0009] The present invention is further configured as follows: the inner film cover comprises an inner film cover body, and the inner film cover body is fixedly mounted on the top of the antenna array frame via an inner film pressing plate; The inner film cover is arranged inside the outer film cover.

[0010] The present invention is further configured such that a foam pad is filled between the antenna unit and the inner membrane cover in the antenna array frame.

[0011] The present invention is further configured as follows: the inflation boost component includes a boost air duct, one end of the boost air duct is provided with a pressure differential sensor and an electric control valve, the other end of the boost air duct is connected to and fixed with an assembly box, the interior of the assembly box is fixedly connected with a fan used in conjunction with the boost air duct, a dehumidifier and an air filter are also fixedly installed inside the assembly box, the air filter is arranged on the side of the dehumidifier away from the fan, and an electric control board is also fixedly installed on the top of the assembly box.

[0012] The present invention is further configured as follows: the assembly box is fixedly mounted on the bottom of the inner cavity of the antenna array frame; one end of the pressurized air duct passes through the antenna array frame and is communicated with the sealed air cavity.

[0013] The present invention provides a double-layer protective tensile membrane radome system. It has the following beneficial effects: (1) The present invention forms a double-layer protective membrane structure through an outer membrane cover and an inner membrane cover. If the outer membrane cover is accidentally damaged, the inner membrane can serve as a secondary protective structure to protect the internal electronic equipment from wind and rain erosion, thereby achieving a double protection effect. In addition, by forming a sealed air cavity, the gas compression in the cavity can offset part of the external wind load, thereby improving the rigidity of the antenna cover. In conjunction with the inflation booster component, clean and dry air can be continuously added to the antenna cover cavity to ensure the long-term stable use of the antenna cover.

[0014] (2) The present invention further improves the waterproof effect of the antenna cover by coordinating the waterproof membrane, the waterproof board and the waterproof membrane pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the external structure of the present invention; Figure 2 is a transverse cross-sectional view of the structure of the present invention; Figure 3 It is an exploded schematic diagram of the structure of the present invention; Figure 4A longitudinal sectional view of the structure of the present invention; Figure 5 It is a schematic diagram of the connection between the outer membrane cover, the inflation and pressurization assembly, the inner membrane cover and the antenna array skeleton structure of the present invention; Figure 6 It is a structural schematic diagram of the inflation and pressurization assembly of the present invention; Figure 7 For the present invention Figure 3 A magnified schematic diagram of the structure at center A; Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle.

[0016] In the picture: 1. Antenna array frame; 101. Tension plate; 102. Waterproof board; 2. Outer membrane cover; 201. Outer membrane cover body; 202. Structural arch; 203. Raised portion; 204. Tension strip; 205. Slide; 206. Adjusting bolt; 207. Fastening nut; 208. Waterproof membrane; 209. Waterproof membrane pressure plate; 3. Inner film cover; 301. Inner film cover body; 302. Inner film pressing plate; 4. Inflatable booster assembly; 401. Booster duct; 402. Pressure differential sensor; 403. Electric control valve; 404. Assembly box; 405. Fan; 406. Dehumidifier; 407. Air filter; 408. Electric control board; 5. Seal the air cavity; 6. Foam pads. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] See also Figure 1-8 , an embodiment of the present invention provides the following technical solutions: a double-layer protective tensile membrane antenna cover system, including an antenna array frame 1, on which an outer membrane cover 2, an inner membrane cover 3 and an inflation and pressurization component 4 are provided, a sealed air cavity 5 is formed between the outer membrane cover 2 and the inner membrane cover 3, and the inflation and pressurization component 4 is used to inflate and pressurize the sealed air cavity 5 to continuously provide the sealed air cavity 5 with an internal pressure of 100Pa.

[0019] As a preferred solution, the outer membrane cover 2 includes an outer membrane cover body 201 and two structural arches 202. The outer membrane cover body 201 is made of a high-strength, high-wave-transmittance flexible film. The outer membrane cover body 201 is laid on the periphery of the two structural arches 202. The four edge portions of the outer membrane cover body 201 are sewn to form a protrusion 203. The periphery of the protrusion 203 is clamped with a tensioning strip 204. The two structural arches 202 are respectively fixedly installed on both sides of the top of the antenna array frame 1. In order to ensure the effective tensioning and fixation of the outer membrane cover body 201, a slide groove 205 is provided at the bottom of the tensioning strip 204. The antenna array frame 1 A tensioning plate 101 is fixedly installed on the periphery, and an adjusting bolt 206 is passed through and slidably installed on the top of the tensioning plate 101. The head of the adjusting bolt 206 is in sliding contact with the inside of the slide groove 205. The outer periphery of the adjusting bolt 206 and the upper and lower sides of the tensioning plate 101 are sleeved and threadedly installed with a fastening nut 207, wherein the structural arch 202 provides a rigid boundary for the outer membrane cover 201. Under the action of the protrusion 203, the tensioning strip 204 and the adjusting bolt 206, the membrane surface pre-tension is introduced into the outer membrane cover 201, so that the outer membrane cover 201 forms a stable spatial negative Gaussian surface structure.

[0020] As a preferred solution, the inner membrane cover 3 includes an inner membrane cover body 301, which is fixedly installed on the top of the antenna array frame 1 through an inner membrane pressure plate 302. The inner membrane cover body 301 is arranged inside the outer membrane cover body 201. The inner membrane cover body 301 is a flexible dielectric film. To ensure wave transmission performance, its thickness must be selected to be smaller than the wall thickness of the outer membrane cover body 201. The inner membrane cover body 301 is a planar tensioned membrane structure. Pre-tension is introduced through the tooling membrane, and waterproof sealing is achieved through the inner membrane pressure plate 302. Furthermore, a foam pad 6 is filled between the antenna unit in the antenna array frame 1 and the inner membrane cover body 301.

[0021] As a preferred solution, the inflation boost component 4 includes a boost air duct 401, one end of the boost air duct 401 is provided with a pressure difference sensor 402 and an electric control valve 403, the other end of the boost air duct 401 is connected to and fixed with an assembly box 404, the assembly box 404 is fixedly installed at the bottom of the inner cavity of the antenna array frame 1, one end of the boost air duct 401 passes through the antenna array frame 1 and is connected to the sealed air cavity 5, the interior of the assembly box 404 is fixedly connected to a fan 405 used in conjunction with the boost air duct 401, and the interior of the assembly box 404 is also fixedly installed with a dehumidifier 406 and an air filter 407, and the air filter 407 is arranged on the side of the dehumidifier 406 away from the fan 405 An electric control board 408 is also fixedly installed on the top of the assembly box 404. As a detailed explanation, the pressure difference sensor 402 is used to monitor the air pressure of the sealed air cavity 5. The air filter 407 uses a perforated filter plate and an adsorption plate to preliminarily filter large particles of smoke and dust in the air, as well as salt mist components in the sea air. The dehumidifier 406 uses a hygroscopic material to remove moisture from the sealed air cavity 5 to avoid condensation inside the outer membrane cover due to the large temperature difference between day and night, and reduce the influence of the water layer on the wave transmission performance of the antenna cover. The electric control board 408 is used to control the working mechanism of the inflation and boosting component 4. The fan 405 is used to blow air and pressurize the sealed air cavity 5. The electric control valve 403 is used to control the opening and closing of the boosting air duct 401.

[0022] As a preferred solution, in order to further improve the waterproof sealing effect of the antenna cover, a waterproof plate 102 is fixedly installed on the periphery of the antenna array frame 1 and at the bottom of the tensioning plate 101, and a waterproof membrane 208 is heat-sealed and fixed on the four edge portions of the outer membrane cover 201. The waterproof membrane 208 is fixed to the bottom of the waterproof plate 102 through a waterproof membrane pressing plate 209. The waterproof membrane 208 is heat-sealed to the four sides of the outer membrane cover 201 at high temperature by a heat sealing machine. After pre-tension is applied to the outer membrane cover 201, it is fixed to the waterproof plate 102 of the antenna array frame 1 through the waterproof membrane pressing plate 209 to ensure the waterproof sealing of the antenna cover.

[0023] When installing the above-mentioned antenna cover, first lay the foam pad 6 above the antenna unit, then lay the inner membrane cover 301 above the foam pad 6, and tension the inner membrane cover 301 to introduce a pre-tension of 4KN / m, and at the same time fix the inner membrane cover 301 with the inner membrane pressure plate 302. After waterproof sealing, install two structural arches 202 on the antenna array frame 1, and then lay the outer membrane cover 201, use the adjusting bolt 206 to introduce a pre-tension of 6KN / m into the outer membrane cover 201, install the waterproof membrane 208 and seal it, and finally enter the antenna array frame 1 to install the inflation booster assembly 4, so that its air inlet is connected to the atmospheric environment, and the inflation port is connected to the sealed air cavity 5.

[0024] As a further explanation, for a single-layer tensile membrane cover, its ability to resist wind loads depends only on the deformation of the cover itself, and the wind kinetic energy is completely converted into the strain energy of the single-layer membrane cover. The double-layer protective tensile membrane antenna cover system proposed in the present invention forms a relatively sealed air cavity 5 between the outer membrane cover 201 and the inner membrane cover 301. When the wind load acts on the outer membrane cover 201, the outer membrane cover 201 deforms and the volume of the sealed air cavity 5 is compressed. According to the ideal gas state equation When the volume of the sealed air chamber 5 is compressed, its pressure will increase This pressure, together with the deformation of the outer membrane cover 201 itself, resists the wind load, and part of the wind pressure is transferred to the antenna array frame 1. At this time, part of the wind kinetic energy is converted into strain energy of the outer membrane cover 201, and the other part is converted into strain energy of the antenna array frame 1.

[0025] When performing air supply pressure diagnosis, the pressure difference sensor 402 detects the pressure difference Is it less than 100Pa? If yes, open the electric control valve 403 and start the fan 405. The outside air passes through the air filter 407 to filter out impurities, and then passes through the dehumidifier 406 for dehumidification. After that, it passes through the booster air duct 401 and is introduced into the sealed air chamber 5. The pressure difference is detected by the pressure differential sensor 402. If the pressure is greater than or equal to 100 Pa, the electric control valve 403 and the fan 405 are closed.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer protective tensile membrane radome system, comprising an antenna array frame (1), characterized in that: The antenna array frame (1) is provided with an outer membrane cover (2), an inner membrane cover (3) and an inflation and pressurization component (4), a sealed air cavity (5) is formed between the outer membrane cover (2) and the inner membrane cover (3), and the inflation and pressurization component (4) is used to inflate and pressurize the sealed air cavity (5).

2. A double-layer protective tensile membrane radome system according to claim 1, characterized in that: The outer film cover member (2) comprises an outer film cover body (201) and two structural arches (202); the outer film cover body (201) is laid on the periphery of the two structural arches (202); four edge portions of the outer film cover body (201) are sewn to form a raised portion (203); and a tension strip (204) is clamped on the periphery of the raised portion (203); The two structural arches (202) are respectively fixedly mounted on two sides of the top of the antenna array frame (1).

3. A double-layer protective tensile membrane radome system according to claim 2, characterized in that: A slide groove (205) is provided at the bottom of the tension strip (204), a tension plate (101) is fixedly mounted on the periphery of the antenna array frame (1), an adjustment bolt (206) penetrates and is slidably mounted on the top of the tension plate (101), the head of the adjustment bolt (206) is in sliding contact with the inside of the slide groove (205), and fastening nuts (207) are sleeved and threadedly mounted on the periphery of the adjustment bolt (206) and on the upper and lower sides of the tension plate (101).

4. A double-layer protective tensile membrane radome system according to claim 3, characterized in that: A waterproof plate (102) is fixedly mounted on the periphery of the antenna array frame (1) and at the bottom of the tensioning plate (101); a waterproof membrane (208) is heat-sealed and fixedly mounted on the periphery of the four edge portions of the outer membrane cover (201); and the waterproof membrane (208) is fixedly mounted on the bottom of the waterproof plate (102) via a waterproof membrane pressing plate (209).

5. The double-layer protective tensile membrane radome system according to claim 2, characterized in that: The inner film cover component (3) comprises an inner film cover body (301), and the inner film cover body (301) is fixedly mounted on the top of the antenna array frame (1) via an inner film pressing plate (302); The inner film cover (301) is arranged inside the outer film cover (201).

6. A double-layer protective tensile membrane radome system according to claim 5, characterized in that: A foam pad (6) is filled between the antenna unit and the inner membrane cover (301) in the antenna array frame (1).

7. The double-layer protective tensile membrane radome system according to claim 1, characterized in that: The inflation and pressurization assembly (4) comprises a pressurization air duct (401), one end of which is provided with a differential pressure sensor (402) and an electric control valve (403), the other end of which is connected to and fixed with an assembly box (404), the interior of which is fixedly connected with a fan (405) for use in conjunction with the pressurization air duct (401), the interior of which is also fixedly installed with a dehumidifier (406) and an air filter (407), the air filter (407) being arranged on a side of the dehumidifier (406) away from the fan (405), and the top of which is also fixedly installed with an electric control panel (408).

8. The double-layer protective tensile membrane radome system according to claim 7, characterized in that: The assembly box (404) is fixedly mounted at the bottom of the inner cavity of the antenna array frame (1); one end of the booster air duct (401) passes through the antenna array frame (1) and is connected to the sealed air cavity (5).

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