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High temperature and high pressure corrosion hydrogen permeation test device and test method

A penetration test, high temperature and high pressure technology, used in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problem of inability to detect the amount of hydrogen penetration, and achieve the effect of reducing the amount of experiments

Active Publication Date: 2017-05-17
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiency that the hydrogen permeation detection device in the prior art cannot detect the amount of hydrogen permeation while applying a load to the sample, and to provide a method that can measure materials under the coupled action of corrosion hydrogen permeation and fatigue load High-temperature and high-pressure corrosion hydrogen permeation test device and test method that can test the critical fatigue load of materials in a short period of time

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  • High temperature and high pressure corrosion hydrogen permeation test device and test method
  • High temperature and high pressure corrosion hydrogen permeation test device and test method
  • High temperature and high pressure corrosion hydrogen permeation test device and test method

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Embodiment Construction

[0062] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0063] Such as figure 1 , Figure 4 , Figure 5 The shown embodiment is a high temperature and high pressure corrosion hydrogen permeation test device, the test device is respectively connected with the electrochemical workstation 1, the oil bath controller 2 and the fatigue testing machine 3. Fixture 4 and lower fixture 5; comprise controller 38, carbon dioxide gas tank, nitrogen tank, the buffer tank 6 that fills the KOH solution of 0.2mol / L and the reaction kettle 7 that is located on the fatigue testing machine; A still body 8 and the first still cover 9 that is sealingly connected with the first still body, the dissolving liquid that is used to dissolve carbon dioxide gas is provided in the first still body; As figure 2 As shown, the buffer tank includes a second tank body 10 with an open upper end and a second tank cover 11 sealedly c...

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Abstract

The invention discloses a high temperature and high pressure corrosion hydrogen permeation testing device and method. When fatigue limit is measured, after hydrogen permeation current is stabilized under the given corrosion condition, step type fatigue loads are applied to a test sample material from a smaller one to a larger one, and when the hydrogen permeation current is increased along with increase of the load, dislocation movement inside the test sample material is caused by the load, and the load is considered as the fatigue limit of the test sample material in the environment. The device and the method disclosed by the invention have the characteristics that a quantitative relation between the fatigue load state and the hydrogen permeation amount can be measured in situ on line in a high-pressure carbon dioxide corrosion state, the internal relation between the stress and segregation diffusion of hydrogen can be intuitively reflected, and a mutual relation among multiple data is established.

Description

technical field [0001] The invention relates to the technical field of high-temperature and high-pressure corrosion hydrogen permeation testing, in particular to a high-temperature and high-pressure hydrogen corrosion test that can measure the fracture form of materials under the coupled action of corrosion hydrogen permeation and fatigue load, and can test the critical fatigue load of materials in a short time Penetration testing device and testing method. Background technique [0002] With the development of the economy, the human demand for oil, natural gas and other resources is gradually increasing. In recent years, the price of oil has risen year by year. The huge demand has driven the vigorous development of the oil industry. The number of sour oil and gas fields has increased year by year. Hydrogen sulfide, carbon dioxide gas, and acidic substances will corrode mining and transportation equipment, posing a huge threat to the safe development of oil and gas fields. O...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02
Inventor 周成双张林黄秋彦
Owner ZHEJIANG UNIV OF TECH
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