Device for detecting redundancy of heat insulating layer sheet

Abstract

The utility model relates to a device for detecting redundancy of a heat insulating layer sheet, which is characterized in that the bottom of an inspection vehicle frame is covered by an aluminum plate, frosted acrylic plate transparent glass is fixed at the top of the inspection vehicle frame, and the circumferential peripheral area of the inspection vehicle frame above the aluminum plate and below the frosted acrylic plate transparent glass is blocked by a mounting plate; a plurality of LED light sources are arranged on an aluminum plate at the bottom of the inspection vehicle frame, and the LED light sources are controlled to be turned on or turned off by the start button switch; the reflectors are mounted on the mounting plates in the circumferential peripheral area of the inspection vehicle frame, and light beams emitted by the LED light sources at the bottom are reflected or refracted by the reflectors on the periphery, so that the light source for defect inspection of the heat insulating layer sheet is enhanced; the flat-bottom trundles are installed on the periphery of the bottom of the inspection vehicle frame, and the heat insulation layer sheet is flatly laid on the surface of the transparent glass of the top frosted acrylic plate. According to the utility model, the problems of low reliability and long time consumption of redundant material detection of different types of heat insulation layer sheets with different thicknesses are solved.

Description

Technical Field

[0001] This utility model belongs to the field of engine insulation layer quality inspection technology, and relates to a device for detecting foreign matter in insulation layer sheets. Background Technology

[0002] The quality of the insulation layer molding in a solid rocket motor is a critical factor determining the engine's success or failure. The molding of the insulation layer is one of the key technologies of rockets, and its quality directly affects the engine's normal operation and safety. The inner wall of a solid rocket motor casing is typically lined with an insulation layer, primarily for heat protection and resistance to combustion gas erosion, protecting the integrity of the casing structure during engine ignition.

[0003] With the development of insulation layer forming technology, the external forming process of insulation layers is being used more and more widely in the forming of insulation layers for solid rocket engines. The forming of a single-layer insulation layer requires a process that, during the rolling and sheeting process, risks of inclusions and foreign matter may arise. These foreign matter may be mixed into the insulation layer sheet after rolling and cannot be visually inspected by the naked eye, thus affecting the quality of the sheet forming.

[0004] The external forming process of the insulation layer first requires the fabrication of a pre-formed insulation layer component outside the shell. This pre-formed component is composed of multiple layers of single-layer insulation sheets stacked together. The reliability of the appearance quality of each single-layer insulation sheet after rolling—whether it is free of light transmission, inclusions, or excess material—directly affects the overall quality of the engine forming. Therefore, reliable quality testing of the single-layer insulation sheet is crucial. For many years, the main method for inspecting the appearance quality of single-layer insulation sheets has been the lamp illumination method. Operators use a handheld lamp to inspect each single-layer insulation sheet by changing positions to ensure complete coverage of the entire sheet surface, leaving no area unchecked and guaranteeing that the insulation layer used inside the shell meets the process requirements. Because existing handheld lamps have limited inspection area for sheet materials, requiring manual movement of the lamps, they are not only inefficient but also pose a risk of incomplete or inadequate inspection. Furthermore, for insulation sheets containing asbestos and other raw materials, existing lamps cannot effectively detect inclusions and excess material between insulation layers. Visual inspection with the lamps cannot accurately pinpoint defect locations, making early detection of sheet defects difficult. If single-layer insulation sheets contain inclusions, light transmission, or excess material, and these defective single-layer sheets are used to create multi-layer pre-formed insulation structures, these risks cannot be detected by the naked eye, hindering timely prevention. Once the insulation shell has been cured at 150° or 160°, it will be unsuitable for rework, affecting the quality of the cured product and leading to re-production or scrapping. In severe cases, this can directly cause engine test failures due to substandard insulation layer molding quality.

[0005] Therefore, there is an urgent need to design an auxiliary device that can efficiently and accurately detect excess material in insulation sheet materials. Utility Model Content

[0006] The technical problem solved by this utility model is to overcome the shortcomings of the prior art and propose a foreign matter detection device for insulation sheet materials, which solves the problems of low reliability and long time consumption in detecting foreign matter in insulation sheet materials of different types and thicknesses. This detection device is easy to operate, has high detection accuracy and efficiency, and is universally applicable to the inspection of different types of insulation layers, thereby improving production efficiency and ensuring the reliability of the quality of insulation sheet materials for solid rocket engines.

[0007] The solution to the technical problem of this utility model is: including a vehicle frame, aluminum plate, frosted acrylic transparent glass, multiple LED light sources, start button switch, reflector and flat bottom casters;

[0008] The bottom of the inspection vehicle frame is covered by an aluminum plate, and the top is fixed with a frosted acrylic transparent glass plate. The area around the inspection vehicle frame above the aluminum plate and below the frosted acrylic transparent glass plate is sealed with a mounting plate.

[0009] Multiple LED light sources are arranged on an aluminum plate at the bottom of the inspection vehicle frame, and the LED light sources are turned on or off by a start button switch;

[0010] The reflectors are mounted on the mounting plates around the perimeter of the inspection vehicle frame. The beams of light emitted by the bottom LED light source are reflected or refracted by the reflectors around the perimeter, enhancing the light source for inspecting defects in the insulation sheet.

[0011] Flat-bottomed casters are installed around the bottom of the inspection vehicle frame, and insulation sheets are laid flat on the surface of the top frosted acrylic transparent glass.

[0012] Furthermore, the inspection vehicle frame is made of aluminum alloy square tubing, and the corners of the frame on all four sides are fixed with stiffeners to increase the stability of the inspection vehicle frame. Each side is equipped with multiple stiffeners.

[0013] Furthermore, the aluminum plate is connected to the inspection vehicle frame using rollers and guide rails, and can be pulled out and disassembled for easy replacement and maintenance of the LED light source.

[0014] Furthermore, the frosted acrylic transparent glass is firmly bonded to the contact area around the inspection vehicle frame with sealant. The light beam reflected by the frosted acrylic transparent glass achieves the purpose of inspecting defects in the insulation sheet using the light method.

[0015] Furthermore, the LED light source arrangement area is located in the center of the bottom aluminum plate, arranged in 2 rows and 3 columns.

[0016] Furthermore, the reflector is a mirror reflector.

[0017] Furthermore, the flat-bottomed casters are polyurethane swivel casters.

[0018] Furthermore, the flat-bottomed caster is equipped with a locking device for locking the flat-bottomed caster.

[0019] Furthermore, the reflector is installed on a mounting plate that covers the circumferential area of ​​the inspection vehicle frame.

[0020] The advantages of this utility model compared with the prior art are:

[0021] (1) The device of this utility model can detect the quality of the insulation layer sheet by means of light illumination. There is no need for manual movement of the light box, which avoids missing some areas, eliminates manual operation error, improves the reliability of insulation layer quality inspection, realizes precise control of key control points of solid rocket engine insulation molding, and meets the high precision and high reliability requirements of solid rocket engine.

[0022] (2) Compared with the traditional rod lamp illumination method for inspection, the application of this utility model device reduces the time for personnel to inspect, enables assembly line operation, reduces labor intensity, and improves the production efficiency of heat insulation preforms.

[0023] (3) The insulation layer sheet foreign matter detection device of this utility model realizes the insulation layer quality detection function. The device has a simple structure, is easy to operate, has strong adaptability and high process reliability.

[0024] (4) The device of this utility model can not only inspect the quality of nitrile rubber series insulation layer sheets, but also the quality of EPDM rubber series insulation layer sheets, and has the versatility to achieve the testing of different types of insulation layers. Attached Figure Description

[0025] Figure 1 This is a front view of a device for detecting foreign matter in insulation sheet materials;

[0026] Figure 2 Left view of a device for detecting foreign matter in insulation sheet materials;

[0027] Figure 3 This is a top view of a device for detecting foreign matter in insulation sheet materials. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] This embodiment provides a device for detecting foreign matter in insulation sheet materials, such as... Figure 1As shown, it mainly consists of an inspection vehicle frame 2, an aluminum plate 3, a frosted acrylic transparent glass plate 4, multiple LED light sources, a start button switch 5, a reflector, and flat-bottomed casters 1.

[0031] The inspection vehicle frame 2 is made of 40×40×1.2 mm aluminum alloy square tubing. Ribs are used to fix the corners of the frame on all four sides to increase its stability. Each side has four ribs, for a total of 16 ribs on all four sides. Exposed tube ends are sealed. The bottom of the inspection vehicle frame 2 is covered with a 1 mm thick aluminum plate 3, under which a 40×40 mm aluminum tube is welded to provide support. A left view of the inspection vehicle frame 2 is shown below. Figure 2 As shown.

[0032] The aluminum plate 3 is connected to the inspection vehicle frame 2 using rollers and guide rails, allowing for easy removal and replacement of the LED light source for convenient replacement and maintenance. The frosted acrylic transparent glass 4 is fixed to the upper end of the inspection vehicle frame 2. Simultaneously, the area around the inspection vehicle frame 2 above the aluminum plate 3 and below the frosted acrylic transparent glass 4 is sealed with mounting plates to prevent damage to internal parts during operation. Figure 1 As shown. The mounting plate is preferably a 1mm thick aluminum plate.

[0033] The frosted acrylic transparent glass 4 is firmly bonded to the contact area of ​​the inspection vehicle frame 2 with sealant. The light beam reflected by the frosted acrylic transparent glass 4 is used to achieve the purpose of inspecting the defects of the insulation sheet by light illumination.

[0034] The LED light source consists of six LED light sources arranged on the bottom aluminum plate 3 of the inspection vehicle frame 2. The LED light source arrangement area is located in the center of the bottom aluminum plate 3, and the arrangement is in 2 rows and 3 columns. The conversion connector uses a 220V three-phase power supply.

[0035] The start button switch 5 is a 220V three-phase power plug, which can control the opening or closing of the 6 LED light sources installed on the aluminum plate 3 at the bottom of the inspection vehicle frame 2.

[0036] The reflector is a mirror reflector. A mounting plate is used to seal the circumferential area of ​​the inspection vehicle frame 2, above the aluminum plate 3 and below the frosted acrylic transparent glass 4, and the inner side of the mounting plate is as shown in the image. Figure 3 Mirrored reflectors are affixed to positions C, D, E, and F, respectively, covering the mounting plate around the perimeter of the inspection vehicle frame 2. The beams emitted by the six bottom LED light sources are reflected or refracted by the surrounding mirrored reflectors, thus enhancing the light source for inspecting defects in the insulation sheet.

[0037] The flat-bottomed casters 1 are made of polyurethane wheel material. Four polyurethane universal casters with a diameter of Ф200mm are installed at the four bottom corners of the inspection vehicle frame 2. They are reliably connected to the inspection vehicle frame 2 to facilitate the movement of the inspection vehicle at any time and can also be disassembled at any time.

[0038] The flat-bottomed caster 1 is equipped with a locking device, which is used to lock the flat-bottomed caster 1, thereby fixing the inspection vehicle frame 2. The vehicle body can rotate 360° on the ground and has a locking function. Operators can lock or unlock the inspection vehicle at any time by performing locking or unlocking operations, which is convenient for operators to move or fix the device.

[0039] This device uses six LED light sources mounted on the aluminum plate 3 at the bottom of the inspection frame 2 to emit light beams. These beams are reflected or refracted by surrounding mirrored reflectors. The insulation sheet placed above the frosted acrylic transparent glass 4 on top is then illuminated by the LED light beams, allowing for direct visual inspection of the insulation sheet for inclusions, excess material, and localized light transmission. This significantly improves the quality of the insulation sheet. Compared to traditional visual or rod lamp inspection methods, inspection efficiency is increased by 80%, and preform manufacturing efficiency is simultaneously improved. The device's operation process is as follows:

[0040] Step 1, Preparation, turn on the switch

[0041] First, connect the device to the static electricity conductive wire, check for excess material in the insulation sheet, inspect whether the power connection of the inspection vehicle is normal, and check whether the LED light source cable is damaged, especially at the connection point. At the same time, push the inspection vehicle to a fixed position and lock the swivel wheels of the inspection vehicle to prevent it from moving back and forth during operation, bumping and injuring people, or pulling and damaging the power cord. After confirming that there are no problems, insert the three-phase power plug of the inspection vehicle into a 220V socket.

[0042] Step 2: Inspect the insulation sheet material using the inspection vehicle.

[0043] After connecting the three-phase plug to the power supply, when the six LEDs at the bottom are lit normally, lay the insulation sheet flat on the frosted acrylic transparent glass surface on the top of the sheet inspection vehicle. The beam of light emitted by the LEDs is reflected or refracted by the surrounding mirror reflectors and then passes through the frosted acrylic transparent glass 4 to emit a beam of light, thus enabling the inspection of the insulation sheet for problems.

[0044] Step 3: The inspection vehicle can be moved at any time.

[0045] To meet the inspection needs of insulation sheet materials in different locations, the sheet material inspection cart can be moved at any time by locking or unlocking the four swivel casters at the bottom.

[0046] Step 4: Disconnect the power supply immediately after stopping the operation.

[0047] After the inspection is completed, the power should be disconnected in time to shut off the power to the inspection vehicle, so as to avoid damage to the LED light source due to prolonged heating and inadequate heat dissipation.

[0048] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0049] The contents not described in detail in this utility model specification are common knowledge to those skilled in the art.

Claims

1. A device for detecting foreign matter in insulation sheet materials, characterized in that, Including the inspection vehicle frame (2), aluminum plate (3), frosted acrylic transparent glass (4), multiple LED light sources, start button switch (5), reflector and flat bottom casters (1); The bottom of the inspection vehicle frame (2) is covered by an aluminum plate (3), and the top is fixed with a frosted acrylic transparent glass (4). The area around the inspection vehicle frame (2) above the aluminum plate (3) and below the frosted acrylic transparent glass (4) is sealed with a mounting plate. Multiple LED light sources are arranged on the aluminum plate (3) at the bottom of the inspection vehicle frame (2), and the LED light sources are turned on or off by the start button switch (5); The reflector is installed on the mounting plate around the perimeter of the inspection vehicle frame (2). The beam of light emitted by the bottom LED light source is reflected or refracted by the reflector around the perimeter to enhance the light source for inspecting defects in the insulation sheet. Flat-bottomed casters (1) are installed around the bottom of the inspection vehicle frame (2), and the insulation sheet is laid flat on the surface of the top frosted acrylic transparent glass (4).

2. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The inspection vehicle frame (2) is made of aluminum alloy square tube. The corners of the frame on all four sides are fixed with stiffeners to increase the stability of the inspection vehicle frame (2). Each side is provided with multiple stiffeners.

3. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The aluminum plate (3) is connected to the inspection vehicle frame (2) using rollers and guide rails, and can be pulled out and disassembled, which facilitates the replacement and maintenance of LED light sources.

4. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The frosted acrylic transparent glass (4) is firmly bonded to the contact area of ​​the inspection vehicle frame (2) with sealant. The light beam reflected by the frosted acrylic transparent glass (4) achieves the purpose of inspecting the defects of the insulation sheet by light illumination.

5. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The LED light source arrangement area is located in the center of the bottom aluminum plate (3), and the arrangement is 2 rows and 3 columns.

6. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The reflector is a mirror reflector.

7. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The flat-bottomed caster (1) is a polyurethane swivel caster.

8. The device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The flat-bottomed caster (1) is equipped with a locking device for locking the flat-bottomed caster (1).

9. A device for detecting foreign matter in insulation sheet material according to claim 1, characterized in that, The reflector is a mounting plate that covers the circumferential area of ​​the inspection vehicle frame (2).

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