Damage detection apparatus, damage detection system, and damage detection method

Abstract

The embodiment of the application provides a kind of damage detection equipment, system and method, damage detection equipment includes shell, first end cover, second end cover, first fixed ring, second fixed ring, first tough transparent glass, second tough transparent glass, first fixing, second fixing and refracting mirror module, first end cover is provided with detection hole, detection hole is used to set up image acquisition module, first fixed ring and second fixed ring are mutually matched and are used to hold fixed propellant grain, refracting mirror module is spaced apart from propellant grain and is directly opposite setting, second end cover is provided with light source hole, light source hole is used to set up light source module, wherein, light source module emits illumination light through light source hole, after illumination light is refracted via refracting mirror module, part of light is transmitted to the inner surface of propellant grain, and after being reflected by the inner surface of propellant grain, it is transmitted from detection hole and is collected by image acquisition module, to detect the inner surface damage condition of propellant grain.

Claims

1. A damage detection device for detecting damage to propellant grains, characterized in that, The damage detection device includes a housing, a first end cap, a second end cap, a first fixing ring, a second fixing ring, a first tempered transparent glass, a second tempered transparent glass, a first fixing component, a second fixing component, and a refractor module. The housing includes a hollow cylinder and a first flange and a second flange connected to opposite ends of the cylinder. The first end cap extends into the cylinder and is detachably connected to the first flange. The second end cap extends into the cylinder and is detachably connected to the second flange. The first end cap has a detection hole communicating with the inner cavity of the cylinder, which is used to house an image acquisition module. The first fixing ring and the second fixing ring are arranged side by side on the inner side of the cylinder. The first fixing ring abuts against the first end cap, and the second fixing ring abuts against the second end cap. The first fixing ring and the second fixing ring cooperate to clamp and fix the propellant grain. The first tempered transparent glass is disposed on the extension path of the detection hole. The first fixing member is fitted onto the first end cap to fix the first tempered transparent glass. The refractor module is disposed on the side of the first fixing member away from the first tempered transparent glass, and the refractor module is spaced apart from and directly opposite the propellant grain. The second end cap is provided with a light source hole communicating with the inner cavity of the cylinder. The light source hole is used to house the light source module. The second tempered transparent glass is disposed on the extension path of the light source hole. The second fixing member is fitted onto the second end cap to fix the second tempered transparent glass. The extension direction of the light source hole is consistent with the extension direction of the detection hole. The light source module emits illumination light through the light source hole. After the illumination light is refracted by the refractor module, part of the light is transmitted to the inner surface of the propellant grain. After being reflected by the inner surface of the propellant grain, it is transmitted from the detection hole and acquired by the image acquisition module to detect the damage to the inner surface of the propellant grain. The propellant grain is disposed in a sealed environment formed by the outer shell, the first end cap, and the second end cap.

2. The damage detection device as described in claim 1, characterized in that, The refractive mirror module is a triangular prism, and the refractive mirror module includes a refractive surface. The refractive surface is used to refract the illumination light from the light source hole, so that the illumination light is transmitted toward the inner surface of the propellant grain. The angle formed between the refractive surface and the extending direction of the light source hole is 45 degrees.

3. The damage detection device as described in claim 1, characterized in that, The first fixing member has an annular groove on the side facing the refractor module. The damage detection device also includes a driving member and a rotating member. The driving member and the rotating member are located in the annular groove. The refractor module is connected to the rotating member. The driving member is used to drive the rotating member to selectively rotate clockwise or counterclockwise so that the refractor module rotates a preset angle relative to the inner side of the propellant grain, thereby refracting the illumination light onto the entire inner surface of the propellant grain.

4. The damage detection device as described in claim 1, characterized in that, The damage detection device also includes a diverter. The second end cap is provided with a through first mounting hole. The diverter is provided corresponding to the first mounting hole, and the diverter extends into the inner cavity of the cylinder. The diverter is used to prevent high-speed, high-pressure airflow from interfering with and damaging the propellant grains in the inner cavity of the cylinder.

5. The damage detection device as described in claim 1, characterized in that, The damage detection device also includes a pressure sensor. A second mounting hole is provided on the second end cap. The pressure sensor is provided corresponding to the second mounting hole, and part of the pressure sensor extends to the outside of the second end cap. The pressure sensor is used to detect the pressure parameters of the inner cavity of the cylinder.

6. The damage detection device as described in claim 1, characterized in that, The damage detection device further includes a first sealing ring, a second sealing ring, and a third sealing ring. The first sealing ring is an explosion-proof soft gasket. The first sealing ring is disposed at the connection between the end cap and the end face of the first tempered transparent glass. The first sealing ring is disposed away from the detection hole. The second sealing ring is disposed at the connection between the end face of the first tempered transparent glass and the first fixing member. The third sealing ring is disposed at the connection and mating part between the first fixing member and the first end cap.

7. The damage detection device as described in claim 1, characterized in that, The damage detection device further includes a fourth sealing ring, a fifth sealing ring, and a sixth sealing ring. The fourth sealing ring is an explosion-proof soft gasket. The fourth sealing ring is disposed at the connection between the end face of the second end cap and the end face of the second tempered transparent glass. The fourth sealing ring is disposed away from the light source hole. The fifth sealing ring is disposed at the connection between the end face of the second tempered transparent glass and the second fixing member. The sixth sealing ring is disposed at the connection and mating part between the second fixing member and the second end cap.

8. The damage detection device as described in claim 1, characterized in that, The propellant grain has a circular ring structure.

9. A damage detection system, characterized in that, The damage detection system includes a light source module, an image acquisition module, and a damage detection device as described in any one of claims 1-8. The light source module is detachably disposed on the outside of the second end cover and is disposed corresponding to the light source hole. The image acquisition module is disposed on the outside of the first end cover and is disposed corresponding to the detection hole.

10. A damage detection method, characterized in that, The method is applied to the damage detection device as described in any one of claims 1-8, and the damage detection method includes: An illumination light is emitted into the cylinder through the light source hole using a light source module. After being refracted by the refraction mirror module, part of the illumination light is transmitted to the inner surface of the propellant grain. An image acquisition module is used to receive the illumination light transmitted from the detection hole after being reflected by the inner surface of the propellant grain; The damage to the inner surface of the propellant grain is detected based on the received illumination light.

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