Intrinsically safe high-purity high-pressure hydrogen environment material compatibility test system and method

Abstract

The invention discloses an intrinsically safe high-purity high-pressure hydrogen environment material compatibility test system and method, and relates to the technical field of material mechanical property test equipment development, and the intrinsically safe high-purity high-pressure hydrogen environment material compatibility test system comprises: a mechanical property test module; a gas supply module; an exhaust module; a vacuumizing module; and online monitoring equipment which is electrically connected with the mechanical property testing module, the gas supply module, the exhaust module and the vacuumizing module, so as to vacuumize, purge, provide hydrogen or exhaust the gas pipeline according to a feedback signal of the hydrogen purity sensor. According to the scheme, hydrogen purity detection is carried out on the testing device, hydrogen purity information is uploaded to the online monitoring equipment, purging replacement of the gas pipeline is controlled through autonomous feedback, online monitoring and automatic purging replacement of the hydrogen purity are achieved, and it is ensured that the purity of hydrogen entering the environment box meets the requirement.

Description

technical field [0001] The invention relates to the technical field of material mechanical property testing equipment development, in particular to an intrinsically safe high-purity high-pressure hydrogen environment material compatibility test system, and also relates to an intrinsically safe high-purity high-pressure hydrogen environment material compatibility test method. Background technique [0002] Hydrogen storage and transportation is an important link in the development of hydrogen energy industrialization, and hydrogen storage at room temperature and high pressure is currently the dominant hydrogen storage method in industrial applications because of its simple equipment structure and fast filling speed. However, long-term service in the high-pressure hydrogen environment will face hydrogen embrittlement problems such as reduced plasticity and accelerated fatigue crack growth rate, which will seriously endanger the operation safety of the hydrogen energy storage and...

AI Technical Summary

Problems solved by technology

Obtaining gas purity information through the gas sampling bottle is a passive detection method, which cannot achieve the purpose of real-time feedback and automatic control, and it is necessary to remove the sampling bottle before each test to determine whether the gas purity is up to standard.

[0006](2) Failure to take measures to exhaust the residual gas in the vent pipe

However, when the gas is gradually discharged and the gas pressure drops below the opening pressure of the flame arrester, the flame arrester will be closed, and there will be gas remaining in the pipeline. The residual gas in the pipeline is a source of danger, and there is no relevant design yet Consider the venting of residual gas at the flame arrester

[0008](3) Quantitative control of gas release rate was not achieved

However, the above-mentioned patents did not take quantitative measures to control the release rate, and could not achieve precise control of the hydrogen release rate.

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