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Non-contact pressure measuring device and method

A non-contact, measuring device technology, applied in the direction of measuring device, elastic deformation meter type fluid pressure measurement, fluid pressure measurement through thermal device, etc., can solve the problem of reducing sealing reliability and safety, unfavorable long-term pressure monitoring, etc. problem, to achieve the effect of satisfying pressure measurement safety, light weight and high safety

Inactive Publication Date: 2020-09-18
XIAN AEROSPACE PROPULSION INST
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems existing in the prior art that reduce the sealing reliability and safety of the original structure, which is not conducive to long-term pressure monitoring, and provide a non-contact pressure measurement device and method

Method used

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Embodiment

[0083] It is necessary to monitor the cylinder pressure of a certain type of attitude control power system for a long time, the design pressure of the cylinder is 10MPa, and the design temperature is 20℃. A method for non-contact pressure measurement using a non-contact pressure measurement device having four strain sensors 1 and two temperature sensors 2, comprising the following steps:

[0084] 1) Establishment and embedding of strain-temperature-pressure mapping relationship

[0085] 1.1) Paste the strain sensor and temperature sensor on the outer surface of the pressure-bearing shell of the gas cylinder module, place the pasted gas cylinder module in a high and low temperature box, connect the gas cylinder module to the gas pipeline, and set a pressure gauge on the gas pipeline;

[0086] 1.2) Fill the gas cylinder with a certain pressure and temperature into the gas cylinder in the informal state through the gas pipeline;

[0087] 1.3) Use the non-contact pressure measuri...

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Abstract

The invention relates to a pressure measuring device and method, in particular to a non-contact pressure measuring device and method, which are suitable for pressure measurement of a gas cylinder module in a rocket attitude and orbit control power system and are also generally suitable for other pressure containers with pressure measurement requirements. The technical problems that the sealing reliability and safety of an original structure are reduced and long-term pressure monitoring is not facilitated in the prior art are solved. The non-contact pressure measuring devicecomprises a cable, ademodulator, a strain sensor and a temperature sensor, wherein the strain sensor and the temperature sensor are respectively adhered to the outer surface of the pressure-bearing shell of the gas cylinder module to be measured; the strain sensor and the temperature sensor are connected with the demodulator through the cable; and the demodulator is provided with a calibration value input equipmentinterface. The method is carried out by using the device.

Description

technical field [0001] The present invention relates to a pressure measurement device and method, in particular to a non-contact pressure measurement device and method, which is suitable for the pressure measurement of the gas cylinder module in the rocket attitude and orbit control power system, and is also generally applicable to other pressure measurement requirements pressure vessel. Background technique [0002] At present, when measuring the pressure of a gas cylinder, it is usually necessary to add a pressure measurement interface and a pressure measurement catheter to the gas cylinder. The advantages of this pressure measurement method are simple operation and convenient measurement. The disadvantage is that it increases the gas leakage link and damages the gas cylinder. The original sealing reliability, while the added pressure measuring conduit also reduces the safety of the original structure. It is not an optimal pressure measurement solution for products with h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L7/02G01L11/00G01L19/14
CPCG01L7/02G01L11/002G01L19/14
Inventor 刘伟峰周士柠杨通海同颖稚徐云飞王彦锋陈金华
Owner XIAN AEROSPACE PROPULSION INST
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