An effective area measurement system for a metal film box

Abstract

An effective area measurement system for a metal film box comprises a gas source, an automatic gas distribution bench, a pressure transducer, a fixing base, a push rod, a force transducer, a data acquisition apparatus and an industrial control computer, wherein the gas source, the automatic gas distribution bench, the pressure transducer and the fixing base are successively connected through connecting pipes. A connecting pipe which is in communication between the pressure transducer and the fixing base is a first pipeline. The metal film box is installed on the fixing base in a sealing mode, and the inner cavity of the metal film box is communicated with the first pipeline through the fixing base. The push rod is arranged on the top surface of the metal film box. One end of the push rod forms surface contact with the top face of the metal film box, and the other end is connected to the force transducer, The data acquisition apparatus is connected with the pressure transducer and the force transducer. The industrial control computer is separately connected with the data acquisition apparatus and the automatic gas distribution bench. According to the system of the invention, an effective area of the metal film box can be accurately measured, and parameter instability due to continuous changes of operating pressure can be reflected faithfully.

Description

technical field [0001] The invention relates to the technical field of pressurized delivery systems for launch vehicles, in particular to an effective area measurement system for a metal diaphragm box. Background technique [0002] In order to provide the key size parameters of the pressure accumulator and the metal bellows of the safety valve in the pressurized delivery system of the launch vehicle, it is necessary to measure the effective area of ​​the end cover of the metal bellows. In the past, a vernier caliper was usually used to measure the radius of the end cover of the bellows, and the area value of the end cover was calculated through the area formula. Due to the complexity of the bellows structure, this measurement method cannot accurately measure the effective area of ​​the end cover of the metal bellows, and cannot reflect the instability of the area parameter caused by the continuous change of the working pressure. [0003] Therefore, how to accurately measure...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an effective area measurement system of the metal diaphragm box to accurately measure the effective area of ​​the metal diaphragm case and to reflect in real time the instability of the area parameter caused by the continuous change of the working pressure.

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