Voltage buildup test tool

Abstract

The utility model belongs to the field of aviation product assembly, and particularly relates to a voltage buildup test tool. If the built-up pressure does not meet the requirement, repeated dismounting and debugging are needed, the operation is tedious, resources are wasted, and an elastic non-metal containing cavity is damaged. The device comprises a simulation pressure buildup weight, a pressure buildup mechanism rotor, a pressure buildup mechanism shell, an air inlet pipe, an air outlet pipe, a pressure buildup barrel, a pressure gauge and a spring. The pressure buildup mechanism shell is of a cubic structure, a cavity is formed in the pressure buildup mechanism shell, the top of the pressure buildup mechanism shell is open, the pressure buildup mechanism rotor is supported on the bottom of the cavity through a spring, and the upper portion of the pressure buildup mechanism rotor is rigidly connected with the simulation pressure buildup weight. An air inlet pipe and an air outlet pipe which are communicated with the cavity are installed on the side face of the pressure building mechanism shell, the air inlet pipe is communicated with an air source in a sealed mode, the air outlet pipe is communicated with the pressure building barrel in a sealed mode, and the internal pressure of the pressure building barrel is detected through a pressure gauge. A multi-overload-value voltage buildup test can be simulated, the passing rate of final test on centrifugal equipment after a complete product is assembled is improved, resources are saved, and the assembly process is simplified.

Description

Technical Field

[0001] The utility model belongs to the field of aviation product assembly, and particularly relates to a pressure building test tooling. Background Art

[0002] In the aviation field, for a pressure building mechanism that builds corresponding gas pressure according to the overload magnitude, it is necessary to install it on a centrifugal device after assembling it into a complete product to conduct pressure building tests under different overloads. If the pressure building does not meet the requirements, it is necessary to repeatedly disassemble, install and debug, and then conduct centrifugal tests, which is very cumbersome and resource-consuming.

[0003] In addition, the container for holding the pressure building gas during the test is an elastic non-metallic cavity. Repeated pressure building will damage the elastic non-metallic cavity. When the overpressure during pressure building is relatively large, the elastic non-metallic cavity will reach its pressure bearing limit and rupture, causing assembly safety accidents.

[0004] Therefore, a pressure building test tooling is needed, which does not require assembling into a complete product and using a centrifugal device for testing, and can simulate overload pressure building tests, saving resources and simplifying the assembly process. At the same time, it enhances the reliability of the gas cavity, improves assembly safety, and avoids assembly accidents. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pressure building test tooling, which simulates multi-value overload pressure tests during the assembly process of the pressure building mechanism, improves the passing rate of the final test on the centrifugal device after assembling into a complete product, saves resources and simplifies the assembly process.

[0006] The technical solution of the utility model is: a pressure building test tooling for simulating overload pressure building tests. The tooling includes a simulated pressure building weight, a moving part of the pressure building mechanism, a housing of the pressure building mechanism, an air inlet pipe, an air outlet pipe, a pressure building barrel, a pressure gauge and a spring.

[0007] The housing of the pressure building mechanism is of a cubic structure, with a cavity inside and an opening at the top. The moving part of the pressure building mechanism is supported by a spring at the bottom of the cavity, and the simulated pressure building weight is rigidly connected to the upper part of the moving part of the pressure building mechanism; an air inlet pipe and an air outlet pipe communicating with the cavity are installed on the side of the housing of the pressure building mechanism. The air inlet pipe is hermetically connected to a gas source, and the air outlet pipe is hermetically connected to the pressure building barrel. The internal pressure of the pressure building barrel is detected by a pressure gauge.

[0008] Advantageously, both the moving part of the pressure building mechanism and the simulated pressure building weight maintain appropriate clearances from the inner wall surface of the housing of the pressure building mechanism.

[0009] Advantageously, the simulated pressure building weight is a cylinder, and its outer diameter is smaller than the minimum dimension of the housing of the pressure building mechanism.

[0010] Advantageously, the lower end of the simulated pressure - building weight is a threaded cylindrical protrusion, and the upper end of the mover of the pressure - building mechanism has a threaded hole, and the two are thread - connected.

[0011] Advantageously, a gasket and a transfer plate are sequentially installed on the outer wall surface of the pressure - building mechanism housing. An air inlet nozzle and an air outlet nozzle are provided on the transfer plate. The inlet pipe is hermetically connected to the air inlet nozzle and communicates with the cavity, and the outlet pipe is hermetically connected to the air outlet nozzle and communicates with the cavity.

[0012] Advantageously, there are multiple weights for the simulated pressure - building weights, which are integer multiples of the weight of the mover of the pressure - building mechanism, and the multiple range is 1 - 9.

[0013] Advantageously, the minimum equivalent diameter in the gas path is greater than or equal to 6 mm.

[0014] Advantageously, the material of the gasket is rubber.

[0015] Advantageously, the lengths of the inlet pipe and the outlet pipe should be greater than or equal to 100 mm.

[0016] Advantageously, the material of the pressure - building barrel is metal, and the volume is 5 - 10 L.

[0017] Beneficial effects: The utility model provides a pressure - building test tooling. During the assembly process of the pressure - building mechanism, it is not necessary to assemble into a complete product and use a centrifugal device for testing. It can simulate multi - overload - value pressure - building tests, improve the passing rate of the final test using a centrifugal device after assembling into a complete product, save resources and simplify the assembly process.

[0018] At the same time, it enhances the reliability and durability of the gas cavity, improves the assembly safety, so that when the pressure - building of the pressure - building mechanism is abnormal and the over - pressure is large, it will not cause damage and rupture of the gas cavity, and avoid the occurrence of assembly accidents. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the utility model. Detailed Embodiments

[0020] Next, the technical solution of the utility model will be clearly and completely described in conjunction with the drawings. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0021] Next, the utility model will be further described in detail through specific embodiments in conjunction with the drawings. It should be noted here that the description of these embodiments is for helping to understand the utility model, but does not constitute a limitation to the utility model. In addition, the technical features involved in the embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Figure 1 The shown pressure building test tooling includes a simulated pressure building weight 1, a moving part 2 of the pressure building mechanism, an adapter plate 3, a housing 4 of the pressure building mechanism, a gasket 5, an air inlet nozzle 6, an air outlet nozzle 7, an air inlet pipe 8, an air outlet pipe 9, a pressure building barrel 10, a pressure gauge 11, and a spring 12. Among them, the simulated pressure building weight 1 is rigidly connected to the moving part 2 of the pressure building mechanism in the vertical direction, so that the moving part 2 of the pressure building mechanism bears the weight corresponding to the simulated overload value. The spring 12 is in contact connection with the moving part 2 of the pressure building mechanism, so that the moving part 2 of the pressure building mechanism returns to its original position when not under simulated overload. The adapter plate 3 is hermetically connected to the side of the housing 4 of the pressure building mechanism through the gasket 5. The adapter plate 3 is hermetically connected to the air inlet nozzle 6 and the air outlet nozzle 7. The air inlet nozzle 6 is hermetically connected to the air inlet pipe 8. The air outlet nozzle 7 is hermetically connected to the air outlet pipe 9. The air outlet pipe 9 is hermetically connected to the pressure building barrel 10. The pressure sensing hole of the pressure gauge 11 is hermetically connected to the inside of the pressure building barrel 10 to prevent gas leakage from causing inaccurate test results.

[0023] There are multiple weights for the simulated pressure building weight 1, which are integer multiples of the weight of the moving part 2 of the pressure building mechanism. The specific requirements are integer multiples from 1 to 9, and are used to increase the weight of the moving part of the pressure building mechanism by an integer multiple to simulate the pressure building under various overload conditions. The simulated pressure building weight 1 is a cylinder, and the maximum outer diameter should be less than the minimum inner diameter of the housing 4 of the pressure building mechanism, so that when the simulated pressure building weight 1 moves with the moving part 2 of the pressure building mechanism, it does not interfere with the housing 4 of the pressure building mechanism, thus affecting the movement of the moving part 2 of the pressure building mechanism. The lower end of the simulated pressure building weight 1 is a threaded cylinder protrusion, which is used for rigid connection with the threaded hole of the moving part 2 of the pressure building mechanism.

[0024] The minimum equivalent diameter in the gas path is greater than or equal to 6 mm to avoid throttling phenomenon caused by insufficient equivalent diameter and affecting the test results.

[0025] The material of the gasket 5 is rubber, which is used for sealing between the adapter plate 3 and the housing 4 of the pressure building mechanism by the compression amount. The gasket 5 is rectangular in shape with two round holes in the middle, which are used to adapt to the shapes of the adapter plate 3 and the housing 4 of the pressure building mechanism and the gas path channels. The diameter of the round holes is larger than the diameter of the two round holes on the housing 4 of the pressure building mechanism to avoid throttling.

[0026] The lengths of the air inlet pipe 8 and the air outlet pipe 9 should be greater than or equal to 100 mm to adapt to the connection requirements under various test environments.

[0027] The material of the pressure building barrel 10 is metal to increase the strength of the gas cavity and avoid abnormal pressure building of the pressure building mechanism. Since the pressure building pressure is relatively large, it may cause the gas cavity to be damaged and cracked. The volume of the pressure building barrel 10 is 5 - 10 L, which is consistent with the size of the actual gas cavity.

[0028] The measuring range of the pressure gauge 11 is greater than or equal to 0 - 120 kPa, which is used to measure the pressure inside the pressure building barrel.

[0029] The working principle of the utility model is as follows: during installation, the pressure building mechanism housing 4, the sealing gasket 5, the adapter plate 3, the air inlet nozzle 6, the air outlet nozzle 7, the air inlet pipe 8, the air outlet pipe 9, the pressure building barrel 10, and the pressure gauge 11 are hermetically connected according to their positional relationships, and the gas source device is hermetically connected to the air inlet pipe 8.

[0030] Before the test, according to the magnitude of the overload to be simulated, select the corresponding simulated pressure building weight 1, and rigidly fasten the simulated pressure building weight 1 to the pressure building mechanism mover 2 through threads.

[0031] During the test, place the pressure building mechanism mover 2 connected with the simulated pressure building weight 1 into the pressure building mechanism housing 4, adjust the pressure building mechanism housing 4 so that the axis of the weight is perpendicular to the ground, make the gas source output gas at a certain pressure, and read the value on the pressure gauge. Turn off the gas source, replace the simulated pressure building weight 1 with a different weight and connect it to the pressure building mechanism mover 2, and repeat the above test steps. It is possible to simulate the pressure building test with multiple overload values, improve the passing rate of the final test of the assembled complete product in the centrifugal equipment, save resources and simplify the assembly process. At the same time, enhance the reliability and durability of the gas cavity, improve the assembly safety, and avoid assembly accidents.

[0032] The above only expresses the implementation modes of the utility model, and its description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model.

Claims

1. A pressure test tool, used for simulating overload pressure test, characterized in that: The tooling comprises a simulated pressure-building weight (1), a pressure-building mechanism mover (2), a pressure-building mechanism housing (4), an air inlet pipe (8), an air outlet pipe (9), a pressure-building barrel (10), a pressure gauge (11) and a spring (12). The pressure-building mechanism housing (4) is a cubic structure, with a cavity inside and an opening at the top, a pressure-building mechanism mover (2) is supported on the bottom of the cavity by a spring (12), and the simulated pressure-building weight (1) is rigidly connected to the upper part of the pressure-building mechanism mover (2); an air inlet pipe (8) and an air outlet pipe (9) connected to the cavity are installed on the side of the pressure-building mechanism housing (4), the air inlet pipe (8) is sealedly connected to the air source, and the air outlet pipe (9) is sealedly connected to the pressure-building barrel (10), and the internal pressure of the pressure-building barrel (10) is detected by a pressure gauge (11).

2. The pressure building test tool according to claim 1, characterized in that: The pressure-building mechanism mover (2) and the simulated pressure-building weight (1) both maintain an appropriate gap with the inner wall surface of the pressure-building mechanism housing (4).

3. The pressure building test tool according to claim 2, characterized in that: The simulated pressure-building weight (1) is a cylinder, and its outer diameter is smaller than the minimum dimension of the pressure-building mechanism housing (4).

4. The pressure building test tool according to claim 3, characterized in that: The lower end of the simulated pressure-building weight (1) is a cylindrical protrusion with a thread, and the upper end of the pressure-building mechanism mover (2) is provided with a threaded hole, and the two are threadedly connected.

5. The pressure building test tool according to claim 1, characterized in that: A sealing gasket (5) and an adapter plate (3) are sequentially installed on the outer wall surface of the pressure building mechanism housing (4); an air inlet nozzle (6) and an air outlet nozzle (7) are provided on the adapter plate (3); an air inlet pipe (8) is sealedly connected to the air inlet nozzle (6) and communicated with the cavity; and an air outlet pipe (9) is sealedly connected to the air outlet nozzle (7) and communicated with the cavity.

6. The pressure building test tool according to claim 1, characterized in that: The weight of the simulated pressure-building weight (1) has various weights, which are integer multiples of the weight of the mover (2) of the pressure-building mechanism, and the multiple ranges from 1 to 9.

7. The pressure building test tool according to claim 1, characterized in that: The minimum equivalent diameter in the gas path is greater than or equal to 6mm.

8. The pressure building test tool according to claim 5, characterized in that: The material of the sealing gasket (5) is rubber.

9. The pressure building test tool according to claim 1, characterized in that: The lengths of the air inlet pipe (8) and the air outlet pipe (9) should be greater than or equal to 100 mm.

10. The pressure building test tool according to claim 1, characterized in that: The pressure building barrel (10) is made of metal and has a volume of 5 to 10L.

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