Light pipe leakage detection system and method

Abstract

The invention discloses a light pipe leakage detection system and method, and relates to a leakage detection system and method. The invention aims to solve the problem that a special tool for detecting leakage of the subsystem module does not exist at present. The light pipe leakage detection system comprises a workbench, and the upper surface of the workbench is detachably connected with an air inlet leakage detection tool and a plugging end leakage detection tool. The invention belongs to the technical field of light pipe leakage detection.

Description

Technical Field

[0001] The invention relates to a leak detection system and method, belonging to the technical field of optical tube leak detection. Background Art

[0002] Traditional satellite propulsion systems mostly use mature platforms and do not involve modular structures. They only need to be leak-tested after the overall welding is completed. The new satellite system consists of 10 modules, and it is necessary to leak-test all 10 modules after the subsystem modules are welded. However, there is currently no tooling specifically for leak testing of such subsystem modules. Summary of the Invention

[0003] The present invention aims to solve the problem that there is no tooling specifically for leak detection of such subsystem modules, and further proposes a light tube leak detection system and method.

[0004] The technical solution adopted by the present invention to solve the above problems is: the optical tube leak detection system of the present invention includes a workbench, the upper surface of which is detachably connected to an air inlet leak detection tool and a blocking end leak detection tool.

[0005] Furthermore, the air inlet leak detection tool includes an air supply connector, an air inlet bracket and an air supply connector fixing nut; the air supply connector is inserted into the mounting hole on the air inlet bracket, the air supply connector fixing nut is installed on the air supply connector, and the air supply connector fixing nut fixes the air supply connector in the mounting hole on the air inlet bracket.

[0006] Furthermore, a 2.0 mm wide groove is provided on the air supply joint for placing a sealing ring to achieve sealing of the light tube port; a compression boss is provided on the fixing nut of the air supply joint for compressing the O-ring to ensure sealing.

[0007] Furthermore, the plugging end leak detection tooling includes a plug, a plug bracket and a plug fixing nut; the plug is inserted into the mounting hole on the plug bracket, the plug fixing nut is sleeved on the plug, and the plug fixing nut fixes the plug in the mounting hole on the plug bracket.

[0008] Furthermore, a 2.0 mm wide groove is provided on the plug for placing a sealing ring to achieve sealing of the light tube port; a compression boss is provided on the plug fixing nut for compressing the O-ring to ensure sealing.

[0009] The light tube leak detection method of the present invention comprises the following steps: Step 1: Divide the workbench into the high-pressure normally closed electric explosion valve area, the high-pressure self-locking valve area and the conventional area; Step 2: Install the air inlet leak detection tooling and the plugging end leak detection tooling in the high-pressure normally closed electric explosion valve area, the high-pressure self-locking valve area, and the conventional area respectively according to the size of the light tube to be tested; Step 3: Connect the air inlet end of the light pipe to be tested to the air inlet leak detection tooling, and connect the air outlet end of the light pipe to be tested to the plugging end leak detection tooling; Step 4: Supply air from the air inlet A in the high-pressure normally closed electric explosion valve area to test the weld leakage rate between the A port and the normally closed electric explosion valve; Step 5: Supply gas from port A in the high-pressure self-locking valve area, block port B, and check the leakage rate of the two welds between port A and the high-pressure self-locking valve and between port A and the high-pressure normally closed electric explosion valve; Step 6: In the conventional area, air is taken in from one port A, and all other light pipe ports are blocked at the B end. Inspect the leakage rate of all welds and screw joints.

[0010] The beneficial effects of the present invention are: 1. The present invention is convenient for disassembly and assembly and easy for processing; 2. The present invention has strong compatibility and can meet the leak detection needs of any pipeline loop with a light pipe port, including three pipe diameter specifications of Φ8, Φ6, and Φ4; it can be used for both vertical and horizontal light pipe ports; 3. The present invention has strong scalability. For leak detection pressure of 2MPa, the present invention can be expanded by adding double sealing rings, increasing the number of threads and strengthening the bracket according to different stamping requirements to expand the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the air inlet leak detection tooling and the plugging end leak detection tooling installed on the workbench; Figure 2 This is a top view of the air inlet leak detection tool; Figure 3 This is a side view of the air inlet leak detection tool; Figure 4 This is a top view of the plugging end leak detection tooling; Figure 5 This is a side view of the plugging end leak detection tooling; Figure 6 It is a schematic diagram of the light tube leak detection method; Figure 7 is a schematic diagram of the structure of the horizontal pipe support; Figure 8 It is a structural diagram of the vertical pipe support; Figures 1 to 6 In the middle, 1-workbench, 2-air supply connector, 3-air inlet bracket, 4-air supply connector fixing nut, 5-plug, 6-plug bracket, 7-plug fixing nut, 8-high-pressure normally closed electric explosion valve area, 9-high-pressure self-locking valve area, 10-conventional area. DETAILED DESCRIPTION

[0012] Specific implementation method 1: Figure 1As shown, a light tube leak detection system includes a workbench 1, and an air inlet leak detection tool and a blocking end leak detection tool are detachably connected to the upper surface of the workbench 1.

[0013] Specific implementation method 2: Figure 2 and Figure 3 As shown, based on the specific implementation method one, the air inlet leak detection tool includes an air supply connector 2, an air inlet bracket 3 and an air supply connector fixing nut 4; the air supply connector 2 is inserted into the mounting hole on the air inlet bracket 3, the air supply connector fixing nut 4 is installed on the air supply connector 2, and the air supply connector fixing nut 4 fixes the air supply connector 2 in the mounting hole on the air inlet bracket 3.

[0014] In some embodiments, a 2.0 mm wide groove is provided on the air supply connector 2 for placing a sealing ring to achieve sealing of the light tube port; a compression boss is provided on the air supply connector fixing nut 4 for compressing the O-ring to ensure sealing.

[0015] Specific implementation method three: Figure 4 and Figure 5 As shown, based on the specific implementation method one, the plugging end leak detection tool includes a plug 5, a plug bracket 6 and a plug fixing nut 7; the plug 5 is inserted into the mounting hole on the plug bracket 6, the plug fixing nut 7 is mounted on the plug 5, and the plug fixing nut 7 fixes the plug 5 in the mounting hole on the plug bracket 6.

[0016] In some embodiments, a 2.0 mm wide groove is provided on the plug 5 for placing a sealing ring to achieve sealing of the light tube port; a compression boss is provided on the plug fixing nut 7 for compressing the O-ring to ensure sealing.

[0017] In some embodiments, the air inlet bracket 3 and the plug bracket 6 can be divided into a horizontal pipe bracket and a vertical pipe bracket, such as Figure 7 The horizontal pipe support is shown. Figure 8 Shown are vertical tube brackets, which are suitable for light tubes in different directions.

[0018] Specific implementation method four: Figure 6 As shown, a light tube leak detection method includes the following steps: Step 1: Divide the workbench 1 into a high-pressure normally closed electric explosion valve area 8, a high-pressure self-locking valve area 9 and a conventional area 10; Step 2: Install the air inlet leak detection tooling and the plugging end leak detection tooling in the high-pressure normally closed electric explosion valve area 8, the high-pressure self-locking valve area 9 and the conventional area 10 respectively according to the size of the light tube to be tested; Step 3: Connect the air inlet end of the light pipe to be tested to the air inlet leak detection tooling, and connect the air outlet end of the light pipe to be tested to the plugging end leak detection tooling; Step 4: Supply air from the air inlet A in the high-pressure normally closed electric explosion valve area 8 to test the weld leakage rate between the A port and the normally closed electric explosion valve; Step 5: Supply gas from port A in the high-pressure self-locking valve area 9, block port B, and check the leakage rate of the two welds between port A and the high-pressure self-locking valve and between port A and the high-pressure normally closed electric explosion valve; Step 6: In the conventional area 10, air is taken in from one port A, and all other light pipe ports are blocked at the B ends. The leakage rates of all welds and screw joints are tested.

[0019] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A light tube leak detection system, characterized in that: The utility model comprises a workbench (1), wherein an air inlet leak detection tool and a plugging end leak detection tool are detachably connected to the upper surface of the workbench (1).

2. The light tube leak detection system according to claim 1, characterized in that: The air inlet leak detection tool comprises an air supply connector (2), an air inlet bracket (3) and an air supply connector fixing nut (4); the air supply connector (2) is inserted into a mounting hole on the air inlet bracket (3), the air supply connector fixing nut (4) is sleeved on the air supply connector (2), and the air supply connector fixing nut (4) fixes the air supply connector (2) into the mounting hole on the air inlet bracket (3).

3. The optical tube leak detection system according to claim 2, characterized in that: The air supply connector (2) is provided with a 2.0 mm wide groove for placing a sealing ring to achieve sealing of the light pipe port; the air supply connector fixing nut (4) is provided with a pressing boss for pressing the O-shaped rubber sealing ring to ensure sealing.

4. The light tube leak detection system according to claim 1, characterized in that: The plugging end leak detection tool comprises a plug (5), a plug bracket (6) and a plug fixing nut (7); the plug (5) is inserted into the mounting hole on the plug bracket (6), the plug fixing nut (7) is sleeved on the plug (5), and the plug fixing nut (7) fixes the plug (5) in the mounting hole on the plug bracket (6).

5. The light tube leak detection system according to claim 4, characterized in that: The plug (5) is provided with a 2.0 mm wide groove for placing a sealing ring to achieve sealing of the light pipe port; the plug fixing nut (7) is provided with a pressing boss for pressing the O-shaped rubber sealing ring to ensure sealing.

6. A method for light tube leak detection using the light tube leak detection system according to claims 1 to 5, characterized in that: The steps of the light tube leak detection method include: Step 1, dividing the workbench (1) into a high-pressure normally closed electric explosion valve area (8), a high-pressure self-locking valve area (9) and a conventional area (10); Step 2: Install the air inlet leak detection tool and the plugging end leak detection tool in the high-pressure normally closed electric explosion valve area (8), the high-pressure self-locking valve area (9) and the conventional area (10) respectively according to the size of the light tube to be detected; Step 3: Connect the air inlet end of the light pipe to be tested to the air inlet leak detection tooling, and connect the air outlet end of the light pipe to be tested to the plugging end leak detection tooling; Step 4: Supply air from the air inlet A in the high-pressure normally closed electric explosion valve area (8) to test the weld leakage rate between the A port and the normally closed electric explosion valve; Step 5: Supply gas from port A in the high-pressure self-locking valve area (9), block port B, and inspect the leakage rates of the two welds between port A and the high-pressure self-locking valve and between port A and the high-pressure normally closed electric explosion valve; Step 6: In the conventional area (10), air is taken in from one port A, and all other light pipe ports are blocked at the B end, and the leakage rate of all welds and screw joints is tested.

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