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

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.

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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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a wide temperature and pressure range (room temperature -700°C, normal pressure -100 MPa), which can be used for in-situ monitoring of electrochemical corrosion of materials in high-pressure hydrothermal systems and high-pressure water A device that interacts with the thermal system and electricity to solve the problems of poor stability and reliability in use of the existing technology, as well as the difficulty in meeting the existing needs of the working temperature and pressure

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