A kind of bellows valve travel test device and using method

Abstract

The invention discloses a diaphragm capsule valve stroke test device. The diaphragm capsule valve stroke test device comprises a workbench (1), a vacuum chamber (2), an instrument box (3), a vibrator (4), a resistive heater (5), a dial indicator (6), a test tool (7), an evaporator (8), a vacuum pump (9), a manual-operation switch valve (10), an automatic switch valve (11), an automatic vent valve (12), a manual-operation vent valve (13), a condenser (14), a refrigeration compressor (15), an absolute pressure sensor (16) and a temperature measuring sensor (17). The vacuum chamber (2) comprises a bell jar type structure and a lower chassis. The bell jar type structure is arranged above the lower chassis. A small-hole structure is arranged on the lower chassis, and the vacuum chamber (2) and the instrument box (3) are fixedly installed on the workbench (1). The high-precision absolute pressure sensor is used for measuring pressure to control the vacuum pump and an electromagnetic valve to be opened and closed, and automatic control over vacuum pressure is achieved. Test precision and test efficiency are greatly improved, and the diaphragm capsule valve stroke test device has larger economic and social values.

Description

technical field [0001] The invention relates to the technical field of structural design and application of a bellows valve travel test device, and in particular provides a bellows valve travel test device and a using method. Background technique [0002] The function of the high-altitude valve of the engine is to adjust the pressure in the lubricating system cavity to ensure the normal operation of the engine lubrication system within the entire flight envelope; the bellows-type diaphragm box valve is an important component of the high-altitude valve. Atmospheric pressure and temperature changes, and the working stroke of the bellows changes to adjust the gas flow area; therefore, it is required to measure the working stroke of the bellows valve at a certain temperature and vacuum to check the performance of the component; currently, the industry is conducting tests on this part The device only has a heating function, which is greatly affected by seasonal environmental fact...

AI Technical Summary

Problems solved by technology

[0002] The function of the high-altitude valve of the engine is to adjust the pressure in the lubricating system cavity to ensure the normal operation of the engine lubrication system within the entire flight envelope; the bellows-type diaphragm box valve is an important component of the high-altitude valve. Atmospheric pressure and temperature changes, and the working stroke of the bellows changes to adjust the gas flow area; therefore, it is required to measure the working stroke of the bellows valve at a certain temperature and vacuum to check the performance of the component; currently, the industry is conducting tests on this part The device only has a heating function, which is greatly affected by seasonal environmental factors, and it is difficult to ensure a constant temperature of the test environment. The vacuum pressure needs to be calculated manually, and the process is complicated and inefficient.

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