Pressure sensor performance testing device and method for gunpowder vacuum stability test

Abstract

The invention discloses a pressure sensor performance testing device and method for a gunpowder vacuum stability test. The device comprises a corrosion gas chamber, a gas balancing device, a corrosiongas conveying pipeline, an inert gas conveying pipeline, a corrosion gas pressure controller and an inert gas pressure controller. The corrosion gas chamber is provided with a gas inlet, a gas outletand a to-be-detected pressure sensor connecting port; the gas balancing device comprises a gas chamber and a deformable dividing piece arranged in the gas chamber, and the dividing piece divides thegas chamber into a corrosive gas cavity and an inert gas cavity which are independent of each other; the corrosive gas conveying pipeline is connected with a corrosive gas inlet of the corrosive gas cavity, and the inert gas conveying pipeline is connected with an inert gas inlet of the inert gas cavity. According to the invention, the corrosive gas pressure controller and the inert gas pressure controller are adopted to carry out coarse adjustment on the corrosive gas pressure and the inert gas pressure, and then the gas balancing device is used for carrying out more accurate adjustment to test the high temperature resistance and the corrosion resistance of the high-precision pressure sensor.

Description

technical field [0001] The invention belongs to the technical field of vacuum stability test of propellants and explosives, and relates to the high temperature and corrosion resistance performance test of a high-precision pressure sensor used in the vacuum stability test of propellant and explosives, specifically a pressure sensor performance testing device and method for the vacuum stability test of propellant. Background technique [0002] The vacuum stability and compatibility of propellants and explosives are the safety performances that must be obtained during the selection and design of raw materials in the formulation design stage of propellants and explosives. Most explosives contain C, N and O elements, which produce corrosive gases when decomposed, such as CO X and NO X , because the critical value in the stability and compatibility judgment standard is small, such as the stability is qualified when the outgassing volume is ≤ 2ml, so the pressure sensor is require...

AI Technical Summary

Problems solved by technology

Since the current high-precision pressure sensors such as 0.1‰FS-0.2‰FS do not have high-temperature and corrosion-resistant data, the high-precision standard pressure sensors in general pressure controllers are in normal temperature and inert gas media, and cannot be used for high-precision pressure sensors. Carry out high temperature resistance and corrosion resistance assessment, but the pressure controller that can use corrosive gas as the medium has low precision, and it is impossible to directly conduct high temperature resistance and corrosion resistance assessment on high-precision pressure sensors

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