Method and device for testing cathodic protection potential of inner bottom plate of oil tank

Abstract

The invention discloses a method and a device for testing cathode protection potential of an inner base plate of an oil tank. The testing method comprises the following steps: arranging an inclined inserting sleeve; preparing a test pipe; connecting a test circuit; testing the cathode protection potential; and the like. The testing device mainly comprises the oil tank, the inclined inserting sleeve, the test pipe, a reference electrode and a test box, wherein an inclined hole which inclines towards a water layer in the tank is formed in the tank wall, close to the upper part of a water layer at the bottom of the tank, of the oil tank; the inclined inserting sleeve is welded on the inclined hole and is exposed on the outer wall of the tank wall; an oleophobic hydrophilic medium layer and a porous permeable membrane are arranged in a gap between two layers of stainless steel hole plates at the blind end of the test pipe; the test pipe and the inclined inserting sleeve are connected and sealed through a flange; and the reference electrode is arranged in the test pipe, and is connected to a reference electrode binding post through a reference electrode lead which extends out of an opening of the test pipe. According to the method, the cathode protection potential can be conveniently detected, and the test accuracy is improved.

Description

technical field [0001] The invention relates to a cathodic protection method and device, in particular to a method and device for testing the cathodic protection potential of the inner bottom plate of an oil tank. Background technique [0002] In the anti-corrosion process of the inner bottom plate of the oil tank, the cathodic protection method of coating and sacrificial anode is generally used for comprehensive anti-corrosion. During the operation and maintenance process, it is necessary to test the protection potential in the tank to judge whether the protection effect has been achieved. Since the reference electrode cannot be installed in the tank, it is difficult to test the protective potential. In order to solve this problem, people hang the electrode into the bottom of the tank through the manhole through the manhole for the protective potential test. In this process, in order to avoid the electrode passing through The oil layer is polluted and affects the test resul...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of time-consuming and labor-intensive testing of cathodic protection potential in the prior art, the electrodes are easily polluted, and the testing accuracy is low, the present invention provides a method and device for testing cathodic protection potential of the inner bottom plate of an oil tank, which can be conveniently Detect cathodic protection potential and improve test accuracy

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