Hydrogen release test device and test method during material deformation
A testing device and deformation technology, applied in the analysis of materials, instruments, etc., can solve problems such as low measurement accuracy and difficulty in measuring hydrogen release, achieve high measurement accuracy, avoid gas release, and improve measurement accuracy
Active Publication Date: 2015-08-12
菏泽建数智能科技有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the disadvantages in the prior art that it can only measure the hydrogen release when the material breaks, it is difficult to measure the trace hydrogen release in the deformation process, and the measurement accuracy is low, and provides a high-precision measurement of the hydrogen release in the deformation process of the material Test device and test method
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[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0053] like figure 1 The shown embodiment is a hydrogen release test device in the process of material deformation, including a vacuum chamber 1, a support frame 2 arranged in the vacuum chamber, and a sample exchange chamber 3 communicated with the vacuum chamber; the vacuum chamber and the sample A vacuum plug-in valve 4 is provided between the exchange chambers, a sample exchange device is provided on one side of the sample exchange chamber to connect with each other, a sealing cover 5 is provided on the sample exchange chamber, and a valve for mounting on the support frame is provided in the sample exchange chamber. The upper clamp 6 and the lower clamp 7; the support frame is provided with an upper clamp 8 for matching with the upper clamp; the vacuum chamber is provided with a loading rod 9, and the upper end of the loading rod is provide...
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The invention discloses a hydrogen release testing device and method in a material deformation process. The testing device is a four-level vacuum pump system, namely a mechanical pump, a molecular pump, a titanium evaporation absorption pump and an ion pump. The vacuum degree in a vacuum cavity is improved to the greatest degree, and the vacuum degree in the vacuum cavity can be 10<-9> Pascal before a sample stretches, so that a hydrogen release behavior can be measured during the stages of elastic deformation, yield and plastic deformation of the material, and a dependence relationship of hydrogen transfer on the tissue and structure change in the material deformation process is better reflected. The hydrogen release behavior can be measured during the stages of elastic deformation, yield and plastic deformation of the sample material, and a hydrogen release behavior can be measured when the sample material is broken.
Description
technical field [0001] The invention relates to the technical field of analysis and testing of residual gas in materials, in particular to a hydrogen release test device and a test method during material deformation with high measurement accuracy. Background technique [0002] Safe and efficient hydrogen storage, hydrogen transportation and hydrogenation are the key issues for the large-scale utilization of hydrogen energy. Among them, high-pressure hydrogen storage and hydrogenation have the advantages of simple equipment structure, low energy consumption for compressed hydrogen preparation, and fast charging and discharging. At present, most fuel cell vehicles, hydrogenation stations, and fuel cell power stations use high-pressure (35MPa or 70MPa) hydrogen storage / hydrogenation method. However, in a high-pressure hydrogen system in which hydrogen is repeatedly filled and released, the stress change caused by the gas and the attack of hydrogen will lead to material perform...
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IPC IPC(8): G01N7/16
Inventor 张林陈兴阳周成双
Owner 菏泽建数智能科技有限公司