Long-life reference electrode for high temperature and high pressure corrosive environments

Abstract

The invention provides a long-life reference electrode suitable for high temperature and high pressure corrosion environment. The electrode core is hot-pressed and sintered. The electrode shell is composed of an upper end body, a middle end body and a lower end body. The middle end body and the lower end body are integrated into one body. An isolation kit consisting of the first fluororubber pad and the first microporous ceramic is set between the end bodies, an explosion-proof pad is set between the upper end body and the upper end cover, and one end of the high-temperature-resistant lead wire of the electrode passes through the upper end cover of the electrode, the explosion-proof pad and the electrode core Connection, the electrode core body is fixed in the upper end body with a positioning pad, the solid powder epoxy resin is sealed between the positioning pad and the explosion-proof pad, and the second fluororubber pad and the second microporous ceramic core are installed between the lower end cover and the lower end body. The reference electrode of the present invention can be used in a high temperature and high pressure environment, so as to achieve the use effects of high temperature resistance, high pressure resistance, maintenance-free and long life.

Description

technical field [0001] The invention relates to a reference electrode, in particular to a long-life reference electrode which can be used stably in a high-temperature, high-pressure corrosion environment. Background technique [0002] The reference electrode is used to accurately measure the electrode potential of metals and their structures in the environment, perform proper cathodic protection on metals and their structures, and provide potential control signals for automatic control equipment. It has a wide range of applications. At present, an important feature in the field of petrochemical and crude oil transportation is the use of transmission towers and pipeline sealing structures for production operations. In this environment, there are service conditions of high temperature and high pressure. In the fields of petrochemical and crude oil transportation, due to the harsh corrosive environment, corrosion failure events of structural parts seriously affect the safe oper...

AI Technical Summary

Problems solved by technology

However, this method is limited by the maximum working temperature of the PTFE thin-walled tube, and this reference electrode is no longer usable after exceeding the temperature tolerance limit of the PTFE thin-walled tube

Images