Pressure test device for inlet section of antenna housing

Abstract

The utility model provides a pressure test device for an inlet section of an antenna housing, and belongs to the technical field of antenna housing testing. Comprising a base and a cover body covering the base, the base comprises a rotary body and an abutting air bag, and a flange extending outwards is arranged on the edge of the bottom of the rotary body; the cover body comprises a shell and a flexible filler arranged in the shell; when the flexible filler fixes the radome, a deformation space is arranged between the flexible filler and the inlet section of the radome. And the radome body is limited through the radome body, so that the stability in the mechanical property testing process is ensured. Furthermore, the abutting air bag is inflated, so that the abutting air bag can uniformly abut against the inner wall surface of the inlet section of the antenna housing, and the uniformity of the pressure applying process is ensured. On one hand, radomes with defective mechanical properties can be rapidly and effectively screened out, on the other hand, the flexible filler can limit the deformation range of the radomes, and the situation that the inlet sections of the radomes are directly pressed and exploded by the abutting air bags, and potential safety hazards are caused can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of radome testing, and in particular to a pressure testing device for an inlet section of a radome. Background Art

[0002] Radomes are widely used in the communications and aerospace fields. For example, they are used on missile heads to protect the missile seeker antenna from high-speed flight, high temperature, high humidity, and high salt spray environments. In wireless communication base stations, they protect the base station antenna from adverse factors such as severe weather and dust, ensuring stable base station signal coverage.

[0003] Therefore, radome products need to meet various performance indicators, such as mechanical properties and dielectric properties. After the radome product is manufactured, it needs to undergo various tests to ensure the reliability of the radome products sold. For example, in the mechanical performance test, bending strength test, fracture toughness test and compressive strength test are often included. In the bending strength test, the three-point bending method is often used to test the bending strength of the specimen to evaluate its resistance to bending stress. This is crucial to prevent the radome from being damaged during high-speed flight or harsh environments. In the fracture toughness test, the single-edge notched beam (SENB) method is used to test the fracture toughness of the specimen to evaluate its resistance to impact or crack propagation. In the compressive strength test, the material's bearing capacity under compressive load is tested to ensure that the radome will not deform or crack when subjected to external pressure.

[0004] However, the radome inlet section is often used for connection and installation with other components, which leads to the neglect of mechanical performance testing of the radome inlet section during mechanical testing, resulting in the lack of a dedicated testing device for the radome inlet section. Utility Model Content

[0005] The purpose of this application is to address the problem in the prior art of the lack of a device for efficiently and quickly testing the mechanical properties of the radome inlet section. Therefore, this application provides a testing device for testing the mechanical properties of the radome inlet section, which can quickly and efficiently test the mechanical properties of the radome inlet section and ensure the accuracy and reliability of the test.

[0006] An embodiment of the present application provides a pressure test device for an inlet section of a radome, comprising: a base and a cover body disposed on the base;

[0007] The base includes a rotating body and an abutting airbag arranged on the outer side wall of the rotating body, and a flange extending outward is provided on the bottom edge of the rotating body;

[0008] The cover body includes a shell and a flexible filler disposed in the shell, wherein the flexible filler is used to fit with the radome; and the flexible filler and the radome are fitted to form a limiting surface, wherein the limiting surface is used to limit the position of the radome;

[0009] When the limiting surface fixes the radome, a deformation space is provided between the limiting surface and the entrance section of the radome.

[0010] Using the above technical solution, the entrance section of the radome is placed on the base, and the entrance section is positioned so that it corresponds to the abutment airbag on the outer wall of the rotating body. The radome body is then limited by the cover to ensure stability during mechanical performance testing. Furthermore, by inflating the abutment airbag, the abutment airbag can be evenly pressed against the inner wall of the radome entrance section, ensuring uniform pressure application. At the same time, a deformation space is provided between the flexible filler of the cover and the entrance section of the radome. When the radome entrance section is subjected to pressure from the abutment airbag, it can deform toward the deformation space. Therefore, if the mechanical performance of the radome entrance section is defective, the radome entrance section will deform directly into the deformation space until it contacts the flexible filler of the cover. This allows for the rapid and effective screening of radomes with defective mechanical properties, while also preventing the entrance section of the radome from being directly compressed by the abutment airbag and rupturing, which could pose a safety hazard.

[0011] In some embodiments, the rotating body is annular, and an outer side wall of the rotating body is provided with an annular groove for accommodating the abutting airbag;

[0012] The abutting airbag is provided with at least one vent tube, which passes through the rotating body and extends out of the inner wall surface of the rotating body.

[0013] The above technical solution is conducive to limiting the abutting airbag. At the same time, the ventilation pipe extends out of the inner wall surface of the rotating body, which facilitates the air supply operation of the ventilation pipe without affecting the normal mechanical performance test.

[0014] In some embodiments, a buffer pad that cooperates with the end face of the rotating body is provided at one end of the rotating body away from the flange, and a guide surface for guiding the antenna cover is provided at the edge of the buffer pad.

[0015] The adoption of the above technical solution is conducive to protecting the entrance section of the radome when installing the radome. At the same time, the guide surface can guide the installation of the radome, thereby improving the convenience of the device.

[0016] In some embodiments, the limiting surface is configured in a conical shape, and a vent hole penetrating to the outer wall of the housing is provided at the top of the limiting surface corresponding to the flexible filler.

[0017] By adopting the above technical solution, when the cover is disassembled, the vent holes can achieve air pressure balance, thereby facilitating the separation between the antenna cover and the limiting surface.

[0018] In some embodiments, a plurality of support rods are provided at the bottom of the base, and the heights of the support rods are adjustable.

[0019] In some embodiments, the opening edge of the cover body corresponds to the flange of the rotating body and is provided with a connecting piece, and the opening edge of the cover body and the flange of the rotating body are detachably connected through the connecting piece;

[0020] The connecting member includes a fixed buckle provided on the outer wall of the housing, and a movable fastener provided on the flange;

[0021] The movable fastener corresponds to the fixing buckle and is locked with or detachable from the fixing buckle.

[0022] In some embodiments, the at least one vent tube abutting the airbag is connected to a high-pressure gas source through a pipeline;

[0023] The pipeline is provided with a pressure reducing device for regulating the air pressure, and an air release valve;

[0024] A silencer structure is provided inside the air release valve, and the air release valve is located between the pressure reducing device and the vent pipe.

[0025] By adopting the above technical solution, the pressure of the abutting airbag can be adjusted by the decompression device, and after the test, the air is exhausted through a separate air release valve, which has better safety and can reduce the noise during exhaust.

[0026] In some embodiments, when the limiting surface fixes the radome, a uniform annular gap is left between the limiting surface and the entrance section of the radome to form the deformation space;

[0027] The spacing of the annular gap is set to 3-4 mm.

[0028] In some embodiments, the abutting airbag is configured as a flexible silicone airbag, and the cross-sectional dimensions of the abutting airbag are length × width × thickness: (100 × 20 × 3) mm.

[0029] In some embodiments, the flexible filler is EVA foam.

[0030] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the description in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1A complete structural diagram of a pressure testing device provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the three-dimensional structure of the cover and base of a pressure testing device provided in an embodiment of the present application after being matched.

[0033] Description of reference numerals:

[0034] 1. Radome;

[0035] 2. Cover body;

[0036] 21. Limiting surface; 22. Shell; 23. Flexible filler; 24. Ventilation hole;

[0037] 3. Base;

[0038] 31. Rotating body; 32. Abutting airbag; 33. Flange; 34. Support rod;

[0039] 321, ventilator;

[0040] 4. Connectors;

[0041] 5. High-pressure gas source;

[0042] 6. Pressure relief device;

[0043] 7. Air release valve. DETAILED DESCRIPTION

[0044] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0045] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, "multiple" means two or more.

[0048] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0049] See also Figure 1 and Figure 2 , Figure 1 A complete structural diagram of a pressure testing device provided in an embodiment of the present application is shown in FIG. Figure 2 A schematic diagram of the three-dimensional structure of the cover and base of a pressure testing device provided in an embodiment of the present application after being matched.

[0050] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides a pressure test device for the inlet section of a radome, comprising: a base 3 and a cover body 2 provided on the base 3;

[0051] The base 3 includes a rotating body 31 and an abutting airbag 32 provided on the outer side wall of the rotating body 31. The bottom edge of the rotating body 31 is provided with an outwardly extending flange 33.

[0052] The cover body 2 includes a shell 22 and a flexible filler 23 disposed in the shell 22. The flexible filler 23 is used to fit the radome 1. The surface of the flexible filler 23 that fits the radome 1 forms a limiting surface 21. The limiting surface 21 is used to limit the position of the radome 1.

[0053] When the limiting surface 21 fixes the radome 1 , a deformation space is provided between the limiting surface 21 and the entrance section of the radome 1 .

[0054] The entrance section of the radome 1 is placed on the base 3, aligned with the abutment bladder 32 on the outer wall of the rotating body 31. The radome 1 body is then positioned by the cover body 2 to ensure stability during the mechanical performance test. Furthermore, by inflating the abutment bladder 32, the abutment bladder 32 evenly presses against the inner wall of the entrance section of the radome 1, ensuring uniform pressure application. A deformation space is defined between the limiting surface 21 of the cover body 2 and the entrance section of the radome 1. When the entrance section of the radome 1 is subjected to pressure from the abutment bladder 32, it deforms toward the deformation space. Therefore, if the mechanical performance of the entrance section of the radome 1 is defective, the entrance section will deform directly into the deformation space until it contacts the limiting surface 21 of the cover body 2. This allows for the rapid and effective screening of radomes 1 with mechanical defects while also preventing the entrance section of the radome 1 from being directly compressed and ruptured by the abutment bladder 32, which could pose a safety hazard.

[0055] In one embodiment, the rotating body 31 is annular, and an outer side wall of the rotating body 31 is provided with an annular groove for accommodating the abutting airbag 32;

[0056] The abutting airbag 32 is provided with at least one vent tube 321, which passes through the rotating body 31 and extends beyond the inner wall of the rotating body 31. This facilitates positioning of the abutting airbag 32. Furthermore, the vent tube 321 extending beyond the inner wall of the rotating body 31 facilitates air supply to the vent tube 321 without affecting normal mechanical performance testing.

[0057] In one embodiment, the abutting airbag 32 is configured as a flexible silicone airbag and is detachably disposed on the outer side wall of the rotating body 31 .

[0058] In one embodiment, a cushion is provided on the end of the rotator 31 facing away from the flange 33, which mates with the end surface of the rotator 31. The edge of the cushion is provided with a guide surface for guiding the radome 1. This helps protect the entrance section of the radome 1 during installation, preventing damage from the rigid rotator 31. Furthermore, the guide surface guides the installation of the radome 1, improving the convenience of the device.

[0059] In one embodiment, the limiting surface 21 is conical, and a vent hole 24 is provided at the top of the limiting surface 21 corresponding to the flexible filler 23, extending through the outer wall of the cover 2. When the cover 2 is removed, the vent hole 24 can achieve air pressure balance, thereby facilitating the separation of the radome 1 from the limiting surface 21.

[0060] In other alternative embodiments, the limiting surface 21 only needs to be in contact with the outer wall of the radome 1 , that is, the shape of the limiting surface 21 is adapted to the outer wall of the radome 1 .

[0061] In one embodiment, a plurality of support rods 34 are provided at the bottom of the base 3 , and the height of the support rods 34 is adjustable.

[0062] In one embodiment, the opening edge of the cover body 2 corresponds to the flange 33 of the rotating body 31 and is provided with a connecting piece 4, and the opening edge of the cover body 2 and the flange 33 of the rotating body 31 are detachably connected via the connecting piece 4;

[0063] The connecting member 4 includes a fixed buckle provided on the outer wall of the cover body 2 and a movable fastener provided on the flange 33;

[0064] The movable fastener corresponds to the fixed buckle and is locked with or detachable from the fixed buckle.

[0065] In one embodiment, the length of the movable fastener is adjustable and has a self-locking function, thereby ensuring the flexibility and reliability of the fixing of the movable fastener.

[0066] In one embodiment, at least one vent tube 321 abutting the airbag 32 is connected to a high-pressure gas source 5 through a pipeline;

[0067] The pipeline is provided with a pressure reducing device 6 for regulating the air pressure, and an air release valve 7;

[0068] A silencer structure is provided inside the air release valve 7 , and the air release valve 7 is located between the pressure reducing device 6 and the vent pipe 321 .

[0069] By adopting the above technical solution, the pressure of the abutting airbag 32 can be adjusted by the decompression device 6, and after the test, the air is exhausted through the separate air release valve 7, which has better safety and can reduce the noise during exhaust.

[0070] In one embodiment, the high-pressure gas source 5 is configured as a high-pressure nitrogen gas source, and the pressure reducing device 6 is configured as a pressure reducing valve.

[0071] In one embodiment, when the limiting surface 21 fixes the radome 1, a uniform annular gap is left between the limiting surface 21 and the entrance section of the radome 1 to form a deformation space;

[0072] The spacing of the annular gap is set to 3 to 4 mm.

[0073] In one embodiment, the radome 1 is made of ceramic material.

[0074] In one embodiment, the abutting airbag 32 is configured as a flexible silicone airbag, and the cross-sectional dimensions of the abutting airbag 32 (length×width×thickness) are: (100×20×3) mm.

[0075] In one embodiment, the flexible filler 23 is configured as flexible foam, for example, 60-degree white EVA foam; and the inner mold line of the EVA foam is completely aligned with the outer shape line of the ceramic antenna cover 1 product.

[0076] In a test scenario, the specific steps include:

[0077] The abutting airbag 32 is installed in the annular groove of the rotating body 31 , and the vent pipe 321 passes through the rotating body 31 until it extends out of the inner wall surface of the rotating body 31 .

[0078] The high-pressure gas source 5, the pressure reducing valve, the air release valve 7 and the vent pipe 321 abutting the air bag 32 are connected by a high-pressure pipeline system to ensure that the pipeline system does not leak.

[0079] The radome 1 to be pressure screened is installed into the base 3 , and the radome 1 is firmly fixed by the cover body 2 , so that the entrance section of the radome 1 corresponds to the abutting airbag 32 .

[0080] After confirming that the test environment around the test device is safe, turn on the high-pressure switch of the gas source, reduce the high pressure of the gas to the pressure required for the test through the pressure reducing valve, and fill the inside of the abutment airbag 32 with the gas with the pressure required for the test through the pipeline system. The abutment airbag 32 applies uniform pressure to the inlet section of the antenna cover 1, thereby conducting a formal test.

[0081] After the test is completed, the high-pressure gas in the abutting airbag 32 is emptied through the air release valve 7 with a silencer, and then the cover body 2 is manually opened, the antenna cover 1 is taken out, and another product is replaced to repeat the above test.

[0082] In another usage scenario, the cover body 2 can be turned upside down first so that the opening of the cover body 2 is facing upward, and then the antenna cover 1 is placed in the cover body 2 and fixed; secondly, the base 3 is installed at the opening of the cover body 2, and the entrance section of the antenna cover 1 can correspond to the abutment airbag 32, and the base 3 and the cover body 2 are locked by the connecting member 4 to complete the test installation of the antenna cover 1.

[0083] Finally, after confirming that the test environment around the test device is safe, turn on the high-pressure switch of the gas source, reduce the high pressure of the gas to the pressure required for the test through the pressure reducing valve, and fill the interior of the abutment airbag 32 with the gas with the pressure required for the test through the pipeline system. The abutment airbag 32 applies uniform pressure to the inlet section of the antenna cover 1, thereby conducting a formal test.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure test device for the inlet section of a radome, characterized in that: include: A base and a cover body arranged on the base; The base includes a rotating body and an abutting airbag arranged on the outer side wall of the rotating body, and a flange extending outward is provided on the bottom edge of the rotating body; The cover body includes a shell and a flexible filler disposed in the shell, wherein the flexible filler is used to fit with the radome; and a surface of the flexible filler that fits with the radome forms a limiting surface, which is used to limit the position of the radome; When the limiting surface fixes the radome, a deformation space is provided between the limiting surface and the entrance section of the radome.

2. The pressure testing device according to claim 1, characterized in that: The rotating body is arranged in an annular shape, and the outer side wall of the rotating body is provided with an annular groove for accommodating the abutting airbag; The abutting airbag is provided with at least one vent tube, which passes through the rotating body and extends out of the inner wall surface of the rotating body.

3. The pressure testing device according to claim 2, characterized in that: A buffer pad that cooperates with the end surface of the rotating body is provided at one end of the rotating body away from the flange, and a guide surface for guiding the antenna cover is provided at the edge of the buffer pad.

4. The pressure testing device according to claim 1, wherein: The limiting surface is arranged in a cone shape, and the flexible filler is provided with a vent hole penetrating to the outer wall of the cover body at the top corresponding to the limiting surface.

5. The pressure testing device according to claim 1, characterized in that: A plurality of support rods are provided at the bottom of the base, and the heights of the support rods are adjustable.

6. The pressure testing device according to claim 1, characterized in that: The opening edge of the cover body corresponds to the flange of the rotating body and is provided with a connecting piece, and the opening edge of the cover body and the flange of the rotating body are detachably connected through the connecting piece; The connecting member includes a fixed buckle provided on the outer wall of the housing, and a movable fastener provided on the flange; The movable fastener corresponds to the fixing buckle and is locked with or detachable from the fixing buckle.

7. The pressure testing device according to claim 1, characterized in that: At least one vent pipe abutting the airbag is connected to a high-pressure gas source through a pipeline; The pipeline is provided with a pressure reducing device for regulating the air pressure, and an air release valve; A silencer structure is provided inside the air release valve, and the air release valve is located between the pressure reducing device and the vent pipe.

8. The pressure testing device according to claim 1, wherein: When the limiting surface fixes the radome, a uniform annular gap is left between the limiting surface and the entrance section of the radome to form the deformation space; The spacing of the annular gap is set to 3-4 mm.

9. The pressure testing device according to claim 1, wherein: The abutting airbag is configured as a flexible silicone airbag, and the cross-sectional dimensions of the abutting airbag are length × width × thickness: (100 × 20 × 3) mm.

10. The pressure testing device according to claim 1, wherein: The flexible filler is EVA foam.

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