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Multichannel erosion-corrosion test system and method

A technology for scouring corrosion and testing systems, which is applied in the direction of testing wear resistance, weather resistance/light resistance/corrosion resistance, measuring devices, etc. Experiment time, the effect of fast conversion measurements

Pending Publication Date: 2019-01-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

Most of the existing experimental devices or experimental means are full-scale piping systems, which can only obtain electrochemical information of a single sample being corroded in this system, and the operating cost is high. Only single-channel measurement is possible, and the experimental cycle is long. It cannot be guaranteed to be carried out under the same system, which will affect the accuracy of the experimental results, and it is not suitable to promote research in the laboratory

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  • Multichannel erosion-corrosion test system and method
  • Multichannel erosion-corrosion test system and method
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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] Refer to attached figure 1 , a multi-channel erosion corrosion test system mentioned in the present invention, its technical solution is: including solution tank (29), cooling coil (24), centrifugal pump (3), pressure gauge (26), gas supply bottle ( 28), pH meter (23), branch test pipeline, test conversion board (22), electrochemical workstation (21); the main inflow pipeline (32) and the main return pipeline (33) respectively have total inflow The valve (1) and the total return valve (2) are used to adjust the flow rate. The solution flows from the solution tank (29) through the main inflow pipeline (32) into multiple branch test pipelines, and passes throug...

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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...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N17/02
CPCG01N3/567G01N17/02Y02E30/30
Inventor 张大磊杨留洋谭卓伟李同跃白舒宇许红明金有海
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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