Three-electrode electrochemical measurement system for high-pressure hydrothermal system and preparation method thereof

A measurement system and three-electrode technology, applied in the field of electrochemical measurement, can solve the problems of poor stability, difficult working temperature and pressure to meet existing requirements, insufficient reliability, etc., and achieve good corrosion resistance, high temperature mechanical strength, and good sealing. Efficiency and insulation performance, good effect of insulation environment

CN104777210BActive Publication Date: 2017-07-18INST OF GEOCHEM CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-07-18

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Abstract

The invention discloses a three-electrode electrochemical measurement system for a high-pressure hydrothermal system and a preparation method thereof. The electrode base is fixed on a high-temperature and high-pressure container body through a metal sealing ring, a sealing ring pressure ring and a compression nut. In the hole; at the axial inner end of the electrode base, there are three conical holes communicating with the three through holes at the outer end. In these three conical holes, a conical working electrode, a conical auxiliary electrode and a conical auxiliary electrode are respectively installed. Porous ceramics, the through hole connected with the taper hole of the frustum-shaped porous ceramics is connected with the reference electrode capillary, and the other end of the reference electrode capillary is connected with the reference electrode nut, the reference electrode shell, the reference electrode pressure ring, the frustum-shaped The reference electrode cavity formed by the reference electrode insulating seal is connected; the conical self-tightening sealing mechanism formed by the present invention enables the working electrode, reference electrode and auxiliary electrode of the present invention to withstand high pressure under high-pressure hydrothermal conditions. Temperature and pressure, and has good sealing efficiency and insulation performance.
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Description

technical field

[0001] The invention relates to a three-electrode electrochemical measurement device which can be used for in-situ monitoring of electrochemical corrosion of materials in a high-pressure hydrothermal system and the interaction between a high-pressure hydrothermal system and electricity, and belongs to the technical field of electrochemical measurement. Background technique

[0002] In recent years, with the increase of thermal power plants and nuclear power plants, the development of technologies such as supercritical oxidation, high temperature and high pressure synthesis, high temperature and high pressure electrolysis, and the research needs of deep sea hydrothermal systems, more and more high pressure hydrothermal systems have appeared in From people's perspective, it can be said that the high-pressure hydrothermal system is related to various fields such as energy, environment, and resources. And with the development of science and technology, the temper...

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Embodiment Construction

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be combined with the attached figure 1 The present invention is further described in detail.

[0035] The high-temperature and high-pressure container body 4 is made of titanium alloy or nickel-based alloy. One end of the high-temperature and high-pressure container body 4 is provided with an internal threaded hole 15, and the other end is an open end.

[0036] The electrode base 10 is made of titanium alloy or nickel-based alloy, and one end of the electrode base 10 is provided with three through holes, and a threaded counterbore is provided at the outer end of the middle through hole, and three tapered holes are provided at the other end, The three through holes communicate with the convergent ends of the three tapered holes.

[0037] Use pyrophyllite, mica or boron nitride to make the frustum-shaped high-temperature-resistant insulating pad 16 and the h...