Valve storage test design method

A technology of test design and test method, applied in mechanical valve testing, mechanical component testing, machine/structural component testing, etc. It can solve the problems of difficult storage test and storage period evaluation, complex function and internal structure, and achieve optimization. Design, improve the effectiveness of evaluation efficiency

Inactive Publication Date: 2019-07-05
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the variety of valve types and raw materials, and the complexity of functions and internal structures, it is difficult to carry out comprehensive storage tests and storage period evaluations.

Method used

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  • Valve storage test design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0139] Taking the oxygen relief valve as an example, the storage test design method is as follows:

[0140] The oxygen safety relief valve needs to be activated during the flight. While ensuring airtightness, it also has the functional requirement of overpressure opening and exhausting. It needs to adapt to high and low temperature thermal environment, random vibration environment, and oxidant-resistant medium corrosion environment. The internal structure is complex, and the sensitive components are under pressure for a long time. The dynamic seals made of carboxynitroso fluororubber materials need to ensure that the dynamic seal performance is normal within 6 months of oxidant resistance storage. Therefore, the whole valve of the oxygen relief valve is taken as the weak link (test piece) at the whole valve level, and the carboxynitroso fluororubber seal is taken as the weak link (test piece) at the component level.

[0141] According to the existing information, it is estima...

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PUM

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Abstract

The invention discloses a valve storage test design method. The method is characterized by establishing a valve storage test design criterion, identifying a weak link affecting a valve storage period,and selecting a typical stand-alone product to carry out whole valve storage testing so as to improve valve storage period evaluation efficiency; and simultaneously, determining a valve storage testtesting project, a test period and a test sequence. In the invention, a universality problem of the valve storage test method is solved, and an application field of the valve storage test method is exploited; and simultaneously, according to a selection principle of the valve storage test testing project, a storage test can be ensured to cover a whole working condition of a valve and a whole lifecycle, and the problems that test expenditures and a period are limited, and a storage test is difficult to comprehensively develop are solved.

Description

technical field [0001] The invention relates to a valve storage test design method applied to launch vehicles, belonging to the field of valve storage period evaluation. Background technique [0002] The valve is one of the important components of the liquid rocket booster delivery system. Its main function is to perform the opening and closing and reversing of the fluid medium passage, adjust the flow and pressure of the working fluid, and protect the safety of the system. According to the function, there are: overflow valve, filling valve, overflow valve, electric explosion valve, manual switch, one-way valve, pressure reducer, voltage stabilizer, filter and valve spare cover. [0003] The internal structure of the valve is relatively complex, mainly composed of metal structural parts, non-metallic seals and elastic / sensitive components. Metal structural parts mainly realize the pressure bearing and guiding functions of the valve; non-metallic seals mainly realize the sea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/003
CPCG01M13/00
Inventor 王健崔景芝孙喆丁蕾余武江马飞
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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