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High-pressure airtight cylinders and test apparatus for testing sealing performance

A sealing performance and high-pressure sealing technology, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, etc., can solve the problem of occupying a large space and achieve the effect of reducing space

Active Publication Date: 2022-03-22
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to select a suitable sealing pair, it is necessary to study the sealing conditions of different aerospace sealing materials under the influence of multi-variable factors such as different preload, sealing specific pressure, inlet pressure and high and low temperature cycles, and analyze the influence of different external factors on the sealing performance of the sealing pair. However, the clamping force loading system of the existing test device is arranged outside the airtight gas tank, which occupies a large space. Therefore, a new type of high-pressure airtight air tank for testing the sealing performance is urgently needed.

Method used

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  • High-pressure airtight cylinders and test apparatus for testing sealing performance
  • High-pressure airtight cylinders and test apparatus for testing sealing performance
  • High-pressure airtight cylinders and test apparatus for testing sealing performance

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The present embodiment provides a high-pressure sealed gas tank 27 for testing the sealing performance, such as Figure 1-9 As shown, it includes: a tank body, a sealing pair and a loading device 1; the material for making the sealing pair can be selected according to needs, the tank body is provided with an air inlet channel 22 and an air outlet channel, and the loading device 1 is arranged in the tank body; the sealing pair includes The plug 10 and the plug 18, the plug 10 is arranged on the free end of the loading device 1, the plug 18 is arranged in the air outlet channel, the plug 18 is sleeve-shaped, the loading device 1 can drive the plug 10 to move, the plug 10 The plug 18 can be sealed, the plug 10 is inserted into the plug 18 to seal the plug 18, the plug 18 is the air outlet 20, that is, the plug 10 is used to seal the air outlet 20, and the corresponding device is used to detect after sealing air leakage;

[0035] Among them, the loading device 1 is used to...

Embodiment 2

[0045] This embodiment provides a sealing performance testing device, such as Figure 10 As shown, it includes: a controllable high and low temperature box 29, a high-pressure air pump 31, a leak detection instrument 28 and a high-pressure sealing gas tank 27 for testing the sealing performance in Embodiment 1; In the low-temperature box 29, the gas outlet end of the high-pressure air pump 31 communicates with the air-intake channel 22. The leak detector 28 is used to detect the air leakage of the sealing pair. The working temperature of the tank placed in the controllable high-low temperature box 29 can be adjusted. Make it simulate the harsh environment of high and low temperature in the aerospace environment. The gas in the tank leaks from the sealing pair, and the leaked gas is received by the leak detection instrument 28. Finally, the sealing effect of the sealing pair and the loading force, working pressure and temperature are analyzed and obtained. and other factors.

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Abstract

The invention discloses a high-pressure sealing gas tank for testing sealing performance, and relates to the technical field of testing the sealing performance of spacecraft components, comprising: a tank body, a sealing pair and a loading device; the loading device is arranged in the tank body; the sealing pair includes a plug and a plug The plug is arranged at the free end of the loading device, the plug is arranged in the air outlet channel, the plug is in the shape of a sleeve, the loading device can drive the plug to move, and the plug can seal the plug; the invention also provides a sealing Performance testing device, including: a controller, a controllable high and low temperature box, a high pressure air pump, a leak detection instrument and the above-mentioned high pressure sealing gas tank for testing the sealing performance; the high pressure sealing gas tank for testing the sealing performance is set in the controllable high and low temperature box Inside, the outlet end of the high-pressure air pump communicates with the air intake channel, the leak detection instrument is used to detect the air leakage of the sealing pair, and the controller is electrically connected to the loading device. The solution provided by the invention makes full use of the idle cavity in the tank, The space occupied by the whole device is reduced.

Description

technical field [0001] The invention relates to the technical field of testing the sealing performance of spacecraft components, in particular to a high-pressure sealing gas tank and a testing device for testing the sealing performance. Background technique [0002] At present, satellites are basically controlled by a three-axis attitude stabilization method, because it is suitable for satellites that operate on various orbits and have various pointing requirements, and can also be used for satellite return, rendezvous, docking, and orbit changes. . The system for realizing satellite three-axis attitude control generally consists of three parts: attitude sensor, attitude controller and attitude actuator. The function of the attitude sensor is to sense and measure the attitude change of the satellite; the function of the attitude controller is to send the signal of the satellite attitude angle change value sent by the attitude sensor, through a series of comparison and proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor 王兴坚张敏张卿陈子扬王少萍
Owner BEIHANG UNIV