Pb/PbCl2 solid non-polarized electrode

Abstract

The invention discloses a Pb / PbCl2 solid non-polarized electrode. The electrode comprises a lead wire electrode core, an electrolyte mixture, an electrode shell, an electrode sealing cover and an electrode cap, wherein the lead wire electrode core is connected with the electrode cap through a wire, and the electrolyte mixture comprises electrolyte PbCl2, inert electrolyte NaCl and electrolyte filler kaolin; wherein the electrode shell comprises an electrode outer-layer shell and an electrode inner-layer shell located in the electrode outer-layer shell, a small hole with the diameter of D3 is machined in the bottom of the electrode inner-layer shell, the electrode outer-layer shell and the electrode inner-layer shell are both filled with an electrolyte mixture, and the lead wire electrode core is spiral; the electrode is buried in an electrolyte mixture filled in an electrode inner layer shell; the length L1 of the electrode outer-layer shell, the length L2 of the electrode inner-layer shell and the diameter D2 need to meet the relational expressions D2>3D3 and L2 >L1-L2. The electrode has advantages of small range potential, good stability, low manufacturing cost and the like, and can well meet the application requirements of actual engineering of ground object physical electromagnetic method exploration.

Description

technical field [0001] The present invention relates to a kind of Pb / PbCl 2 A solid non-polarized electrode belongs to the technical field of electrodes. Background technique [0002] Electrodes are commonly used as electric telluric field sensors, and their performance directly determines the accuracy and reliability of observation data. In grounding electrical prospecting using natural field sources (such as MT, AMT, etc.), due to the weak nature of natural field sources, the size of the electrode’s own potential difference and the stability of its potential affect the accuracy and reliability of the final inversion results. degree has a great influence. For geoelectric field observation, especially for long-period magnetotelluric sounding and earthquake prediction, since the electrode needs to be buried underground for a long time, the electrolyte inside the electrode will gradually lose as time goes on, and the impurities in the external soil will gradually diffuse. i...

AI Technical Summary

Problems solved by technology

The reduction of electrolyte concentration and the entry of impurities will lead to changes in the internal environment of the electrode, thereby affecting the magnitude of the potential difference and the stability of the potential

However, the existing non-polarized electrodes cannot well meet the application requirements of the actual engineering of geophysical electromagnetic prospecting.

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