High-pressure hydrogen embrittlement structure test apparatus and test method thereof

A technology of structural test and high pressure test, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve problems such as no reports, and achieve the effect of reliable work, perfect function and simple structure.

Active Publication Date: 2014-12-17
HEFEI GENERAL MACHINERY RES INST
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Problems solved by technology

At present, there are few experimental studies on the bearing capacity and actual working cond

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  • High-pressure hydrogen embrittlement structure test apparatus and test method thereof
  • High-pressure hydrogen embrittlement structure test apparatus and test method thereof

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Embodiment Construction

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0051] The system configuration of the present invention includes a compressed air system, a hydrogen pipeline system and a data acquisition and control system, which can realize a high-pressure hydrogen test environment with a maximum pressure of 80 MPa. The main working principle of the present invention is to use compressed air as the driving gas source to drive the gas supercharger, and the test medium hydrogen (H 2 ) as the pressurized gas is pressurized by the gas intensifier, and then transported to the test container or sample holding device through the pipeline respectively, and the pressure resistance test is carried out after reaching the predeterm...

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Abstract

The invention relates to a high pressure hydrogen embrittlement structure test apparatus and a test method thereof. The test apparatus comprises a compressed air system, a hydrogen pipeline system and a data acquisition and control system, compressed air is used as a driving gas source to drive a gas booster, hydrogen is pressurized by the gas booster, the pressurized hydrogen is respectively conveyed to a test container or a clamping device through a pipeline, pressure-tight test is carried out after a predetermined test pressure is reached, or boosting is continuously carried out until a sample is exploded to realize the explosion test and determine its explosion pressure. The anti-hydrogen embrittlement performance test of a metal material can be completed through disc test, and the hydrogen embrittlement damage test of a structural member can also be completed through an object or a simulated container; and the high pressure hydrogen test environment with the highest pressure of 80MPa can be realized, unit operation can be adjusted and controlled by the test pressure, the dwelling time and other key test parameters, and the large range adjustment and the stable control of the boosting rate can completely meet hydrogen embrittlement related test requirements.

Description

technical field [0001] The invention relates to a test device for structural strength and material properties, more specifically a complete set of device and a test method for hydrogen embrittlement test of structural parts under hydrogen environment with the highest test pressure of high-pressure hydrogen special equipment pressure vessel and pressure pipeline reaching 80MPa. Background technique [0002] High-pressure hydrogen equipment is used for a long time in a high-pressure hydrogen environment. Under the combined action of stress and high-pressure hydrogen, environmental hydrogen embrittlement phenomena such as deterioration of metal material properties such as plasticity and toughness will occur, resulting in a decrease in the service performance of the overall structural parts of the equipment. One of the main failure modes of hydrogen-exposed structural components. Therefore, it is of great significance to carry out research on hydrogen embrittlement of structural...

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Application Information

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IPC IPC(8): G01N3/12
Inventor 陈学东徐鹏吴玉月郭飞崔军危书涛张志伟
Owner HEFEI GENERAL MACHINERY RES INST
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