One-way valve air leakage test device
By designing a one-way valve leakage test device that includes a left cover, a right cover, a sealing gasket, and an O-ring rubber seal, the lack of leakage test after repair of one-way valves of Soviet aircraft was solved, and stable and reliable leakage detection was achieved to ensure that the repair is qualified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN CHANGFENG IND CORP
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-05
AI Technical Summary
In the existing technology, the one-way valves of Soviet-made aircraft need to undergo a leakage test after repair, but there is a lack of effective testing equipment, which makes it difficult to guarantee the qualification of repair.
A one-way valve leakage test device was designed, including a left cover, a right cover, a sealing gasket, and an O-ring rubber seal. The gasket and the O-ring rubber seal form a cavity, and the sealing of the one-way valve is achieved by the sealing gasket and the O-ring rubber seal, so as to conduct a leakage test.
It has achieved reliable testing of the leakage of one-way valves, ensuring that repairs are qualified without damaging the valves, and is easy to use and has stable performance.
Smart Images
Figure CN224202684U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aviation repair technology and relates to a one-way valve leakage test device, specifically a one-way valve leakage test device for Soviet aircraft. Background Technology
[0002] The one-way valve has a circular outer shell with a radial pin at one end. Two flaps and a spring are mounted on the pin. In the free state, the two flaps close under the action of the spring. When air is intake, the leakage is controlled due to the spring force.
[0003] During major overhauls of Soviet-made aircraft, one-way valves required disassembly and repair. After repair, a leakage test was conducted to ensure the product passed inspection. During the test, the one-way valve was installed in a one-way valve leakage test device. At a temperature of (25±10)℃, compressed air at 0.431MPa was introduced through the device's inlet. The outlet of the device was connected to relevant equipment to check for leakage. If the leakage rate was no greater than 15L / min, the product was considered repaired successfully. Utility Model Content
[0004] The purpose of this invention is to provide a device for testing the leakage of a one-way valve.
[0005] The present invention adopts the following technical solution:
[0006] A one-way valve leakage test device, the test device comprising a left cover 1, a sealing gasket 2, a right cover 3, and an O-ring rubber seal 4.
[0007] The left cover 1 has an air inlet hole machined in the center, a standard aviation beacon threaded connector machined at one end, and an internal thread and stepped hole machined at the other end; the right cover 3 has an air outlet hole machined in the center, a standard aviation beacon threaded connector machined at one end, and an external thread and stepped hole machined at the other end. The left cover 1 and the right cover 3 are connected by threads, and a cavity is formed between their stepped holes for inserting a one-way valve; the sealing gasket 2 is annular and placed on the step of the stepped hole of the left cover 1, and the O-ring rubber sealing ring 4 is placed inside the step of the stepped hole of the right cover 3; the one-way valve is inserted into the cavity between the left cover 1 and the right cover 3, and its two ends are sealed by the sealing gasket 2 and the O-ring rubber sealing ring 4 respectively, meeting the test requirements.
[0008] Furthermore, the sealing gasket 2 is made of oil-resistant rubber sheet.
[0009] The beneficial effects of this utility model are: This utility model can realize the leakage test of one-way valve, and its performance is stable, reliable in use, and easy to disassemble and assemble. It will not cause damage to the one-way valve during use, thus filling the gap in this type of device. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 2 This is a schematic diagram of the left cover, where (a) is the front view and (b) is the side view;
[0012] Figure 3 This is a schematic diagram of a sealing gasket, where (a) is the front view and (b) is the side view;
[0013] Figure 4 This is a schematic diagram of the right cover, where (a) is the front view and (b) is the side view;
[0014] In the diagram: 1-Left cover; 2-Sealing gasket; 3-Right cover; 4-O-ring rubber seal. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below.
[0016] This embodiment provides a one-way valve leakage test device, which includes a left cover 1, a sealing gasket 2, a right cover 3, and an O-ring rubber seal 4. Figure 4 As shown.
[0017] The left cover 1 has an air inlet hole machined in the center, a standard aviation beacon threaded connector machined at one end, and an internal thread and stepped hole machined at the other end, such as... Figure 2 The right cover 3 has a vent hole machined in the center, a standard aviation beacon threaded connector machined at one end, and an external thread and stepped hole machined at the other end. The left cover 1 and the right cover 3 are connected by threads, and a cavity is formed between their stepped holes for inserting a one-way valve. Figure 4 The sealing gasket 2 is annular (e.g., Figure 3 The valve is made of oil-resistant rubber sheet and is placed on the step of the step hole of the left cover 1. The O-ring rubber seal 4 is placed inside the step of the step hole of the right cover 3. The one-way valve is placed in the cavity between the left cover 1 and the right cover 3. Its two ends are sealed by the sealing gasket 2 and the O-ring rubber seal 4 respectively, so as to meet the test requirements.
[0018] Usage procedure: Place the sealing gasket 2 on the step of the left cover 1, place the O-ring rubber seal 4 in the step of the right cover 3, then place the one-way valve on the sealing gasket 2 of the left cover 1, screw the right cover 3 into the left cover 1, and press the sealing gasket 2 and O-ring rubber seal 4 on both sides; after assembly, use rubber tubing to connect the relevant equipment and the navigation mark threaded joints of the left and right covers to conduct an inflation test.
Claims
1. A one-way valve leakage test device, characterized in that, The test apparatus includes a left cover (1), a sealing gasket (2), a right cover (3), and an O-ring rubber seal (4). The left cover (1) has an air inlet at the center, a navigation mark threaded connector at one end, and an internal thread and a stepped hole at the other end; the right cover (3) has an air outlet at the center, a navigation mark threaded connector at one end, and an external thread and a stepped hole at the other end. The left cover (1) and the right cover (3) are connected by threads, and a cavity is formed between the stepped holes of the two for inserting a one-way valve; the sealing gasket (2) is annular and is placed on the step of the stepped hole of the left cover (1), and the O-ring rubber seal (4) is placed inside the step of the stepped hole of the right cover (3); the one-way valve is inserted into the cavity between the left cover (1) and the right cover (3), and its two ends are sealed by the sealing gasket (2) and the O-ring rubber seal (4) respectively.
2. The one-way valve leakage test device according to claim 1, characterized in that, The sealing gasket (2) is made of oil-resistant rubber sheet.