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High temperature and high pressure dynamic electrochemical test and pH in situ monitoring experimental device

A high temperature and high pressure, monitoring device technology, applied in measuring devices, scientific instruments, instruments, etc., can solve the problem of inability to measure electrochemical signals, and achieve the effect of improving the accuracy of rotational speed and concentricity

Inactive Publication Date: 2013-11-27
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

It solves the problem of not being able to measure and monitor the pH change of the electrochemical signal in the corrosion process in the past, and can conveniently measure the electrochemical signal of the sample under dynamic conditions and continuously monitor and record the pH values ​​of the two solutions

Method used

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  • High temperature and high pressure dynamic electrochemical test and pH in situ monitoring experimental device

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Embodiment Construction

[0033] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0034] like Figures 1 to 6As shown, the present invention is a high-temperature and high-pressure dynamic electrochemical test and pH in-situ monitoring device, which includes a high-temperature and high-pressure reaction kettle, a heating and heat preservation system, a three-electrode system, a first pH composite electrode system, a second pH composite electrode system, Working electrode signal conduction path, rotation system, external control box, external gas supply system, external electrochemical test instrument, external pH instrument and computer;

[0035] The high-temperature and high-pressure reaction kettle is composed of an autoclave cover 22, an autoclave body 17, an air inlet pipe 23, and a gas outlet

[0036] Pipe 15, pressure sensor 27, pressure gauge 28 and safety valve 29 constitute;

[0037] The three-electrode system c...

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Abstract

The invention relates to a high temperature and high pressure dynamic electrochemical test and pH in situ monitoring experimental device. The device includes a high temperature and high pressure reaction kettle, a rotation system, a heating insulation system, an external air supply system, a three-electrode system, a first pH composite electrode system, a second pH composite electrode system, a signal transduction pathway, a control box, an external electrochemical workstation, an external pH instrument and a computer. The device utilizes the high temperature resistance, cold resistance, wear resistance, corrosion resistance, anti-magnetoelectric insulation, oil-free self-lubricating, high rotation speed, high strength and other characteristics of a ceramic bearing, can be used in a severe corrosion environment, and also improves the rotation speed and concentricity precision of a rotary working electrode. A collector ring is employed to realize connection of a moving lead and a static lead. The electrochemical signal of a working electrode under a high temperature and high pressure dynamic state can be tested. A high temperature and high pressure pH composite electrode system is employed to realize in situ continuous monitoring and record the pH change of a solution in the vicinity of the rotary working electrode and a bulk solution. The device can be used for high temperature and high pressure dynamic corrosion behavior and mechanism study.

Description

technical field [0001] The invention belongs to the field of corrosion electrochemistry, and relates to an experimental device for studying the corrosion electrochemical behavior, pH influence rule and mechanism of metal materials in a dynamic high temperature and high pressure corrosion environment. Suitable for high temperature and high pressure corrosive media working under dynamic conditions, especially for high temperature and high pressure CO under dynamic conditions 2 Corrosion in-situ electrochemical signal test, and research on the influence of electrochemical reaction of metal materials on the pH of its nearby solution. Background technique [0002] High temperature and high pressure multiphase medium corrosion is a common phenomenon that causes material failure due to electrochemical corrosion. For example, the corrosion of various pipelines and containers in the oil and gas industry mining and gathering and transportation takes the corrosion of high-temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/02
Inventor 许立宁路民旭郭少强李大鹏石云光
Owner UNIV OF SCI & TECH BEIJING
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