Multichannel erosion-corrosion test system and method

Abstract

The invention relates to a multichannel erosion-corrosion test system and method. A technical scheme is as follows: connecting each of three electrode wires in a test sample with an electrode installation opening in a test conversion plate; respectively arranging a work installation hole, a reference installation hole and an auxiliary electrode installation hole at each row of the test conversionplate so as to be correspond to three electrode wires in the sample one to one, wherein the upper part of the test conversion plate is connected with the electrode wire of an electrochemical work station through a metal pin so as to guarantee the information transmission between the to-be-tested electrode and the electrochemical work station, thereby realizing the fast conversion measurement of corrosion conditions of multiple test samples when the samples are located at different flow velocity and different tube type conditions of the same system. The system disclosed by the invention has theadvantages the erosion-corrosion conditions under different flow velocity conditions under the same system and the same medium can be measured, the experimental time is greatly saved, and the samplecorrosion results can be contrasted and analyzed under the condition of guaranteeing the system error, thereby realizing multi-channel and independently-worked single-phase flow or gas liquid two-phase flow erosion-corrosion test.

Description

technical field

[0001] The invention relates to an erosion corrosion test system and method, in particular to a multi-channel erosion corrosion test system and method. Background technique

[0002] Transportation pipelines are widely used in the energy and chemical industries. When the fluid in the pipeline runs, it will generate a certain shear force on the pipe wall, which will damage the corrosion inhibitor protective film, coating or corrosion product film on the pipeline wall. At the same time, the moving fluid is extremely It greatly promotes the mass transfer process near the wall surface and increases the corrosion reaction process. Therefore, the corrosion of transportation pipelines is mainly erosion corrosion.

[0003] Erosion corrosion is the enhanced corrosion effect caused by high-speed relative motion between the metal surface and the corrosive fluid. In the gas-liquid two-phase flow environment, the flow field caused by erosion corrosion changes sharply whe...

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