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Power station flow accelerated corrosion simulation experiment pipeline apparatus with electrochemistry measurement mode

A flow-accelerated corrosion and measurement method technology, which is applied in the direction of measuring devices, weather resistance/light resistance/corrosion resistance, scientific instruments, etc., to achieve the effect of shortening the experiment time

Inactive Publication Date: 2016-01-06
SOUTHEAST UNIV
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Problems solved by technology

However, since the traditional FAC test bench is used to measure the corrosion rate of carbon steel by the weight loss method, and this requires long-term exposure experiments, usually 1 to 2 months

Method used

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  • Power station flow accelerated corrosion simulation experiment pipeline apparatus with electrochemistry measurement mode
  • Power station flow accelerated corrosion simulation experiment pipeline apparatus with electrochemistry measurement mode
  • Power station flow accelerated corrosion simulation experiment pipeline apparatus with electrochemistry measurement mode

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Experimental program
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Embodiment

[0030] Such as figure 1 As shown, the wires and working electrodes of the horizontal pipeline in the corrosion test section are respectively embedded in the first wire hole 19 and the first working electrode hole 20, and the Ag / Agcl electrode is installed in the first reference electrode hole 21 as a reference electrode. An electrode as an auxiliary electrode is installed into the first auxiliary electrode hole 22 .

[0031] Such as figure 2As shown, the wire 17 and the working electrode of the complex flow pipeline in the corrosion test section are respectively embedded in the second wire hole 24 and the second working electrode hole 23, and the platinum disk electrode is installed in the second auxiliary electrode hole 25 as the auxiliary electrode, and the Ag / The Agcl electrode is installed into the second reference electrode hole 26 as a reference electrode.

[0032] like image 3 As shown, when the pipeline device of the electrochemical measurement mode of the power ...

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Abstract

The invention discloses a power station flow accelerated corrosion simulation experiment pipeline apparatus with electrochemistry measurement mode. The pipeline apparatus comprises a water tank and an experiment pipeline which is connected to the water tank, and the water tank is provided with a temperature control module, a pressure control module, a flow control module, a medium oxygen content control module and an pH control module, a wall surface of an experiment segment of the pipeline is embedded with working electrodes, and the electrochemistry measurement method is used for monitoring corrosion of the inner wall of the pipeline segment. According to the method, the flow condition and the flow corrosion of industrial fields can be really reflected, and the corrosion rate of the experiment electrodes can be instantly measured.

Description

technical field [0001] The invention belongs to the field of flow-accelerated corrosion of power station water supply and drainage systems, and in particular relates to a pipeline device for a power station flow-accelerated corrosion simulation experiment in an electrochemical measurement mode. Background technique [0002] At present, the water supply system pipelines of domestic supercritical units are mostly made of carbon steel, and when the water supply treatment method is reducing full volatilization, a double-layer magnetic iron oxide film will be formed on the surface of the carbon steel, and flow-accelerated corrosion is It will cause local thinning of pipe fittings, and the corrosion rate can reach as high as 0.3mm / a (Shao Fei, Zhang Shixin. The impact of flow-accelerated corrosion on power plants [J]. Energy and Energy Conservation, 2014(9): 22-23.). If it is not found in time, the failed device is likely to burst suddenly, resulting in the leakage of high-tempera...

Claims

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Application Information

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IPC IPC(8): G01N17/02
Inventor 徐奇周克毅章斐然姚余善
Owner SOUTHEAST UNIV
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