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Flow accelerated corrosion experiment test analysis method and system

A flow-accelerated corrosion and testing system technology, applied in the direction of analyzing materials, material analysis by electromagnetic means, measuring devices, etc., can solve the problems such as the failure to completely eliminate the FAC phenomenon of the water supply and drainage system and the blockage of the downstream elbow, and achieve the elimination of the FAC phenomenon. Effect

Inactive Publication Date: 2022-03-18
中国电建集团江西省电力设计院有限公司
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  • Application Information

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Problems solved by technology

[0004] This application provides a flow accelerated corrosion test analysis method and its system, in order to solve the problem that the FAC test system of thermal power units in the related art cannot completely eliminate the FAC phenomenon in the water supply and drainage system, and even cause blockage of the downstream elbow, causing more serious problems

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  • Flow accelerated corrosion experiment test analysis method and system
  • Flow accelerated corrosion experiment test analysis method and system
  • Flow accelerated corrosion experiment test analysis method and system

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Effect test

Embodiment 1

[0037] The present application provides a flow acceleration corrosion experiment test analysis method, including: as follows:

[0038] S101, adjust the environmental conditions of the test system, enabling the test system to approach the actual environmental conditions of the thermal power set;

[0039] S102, using electrochemical AC impedance method to measure the experimental system, and obtain electrochemical impedance spectrum data of electrode system;

[0040] S103 analyzes the acquired electrochemical impedance spectrum data.

[0041] The electrochemical AC impedance method monitors corrosion along the circumference direction in the circumferential direction by an electrochemical AC impedance method, which can truly study the cause of 90 ° eluting in the fire generator sets.

[0042] This method will be described in detail below with reference to the drawings:

[0043] Such as figure 1 As shown, S101, adjustment of the environmental conditions of the test system, enabling th...

Embodiment 2

[0057] The second embodiment of the present application provides a flow acceleration corrosion experiment test system, including: water tank, parameter control module, centrifugal pump and electrochemical AC impedance test system module, and each module constitutes a closed loop circuit.

[0058] The parameter control module mainly includes a temperature control module, a pressure control module, a pH control module, a flow control module, and a medium-containing oxygen content control module, which is close to the actual operating environment of the thermofor unit through the synergistic effects between each module. The temperature control module includes a PID controller, a thermocouple, and a heating resistor wire. The temperature control module is mainly adjusted in the test system, and the temperature range is from 20 to 30 ° C in the present embodiment, and the preferred temperature is 25 ° C. . The pressure control module is mainly controlled by the medium liquid level pres...

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Abstract

The invention discloses a flow accelerated corrosion experiment test analysis method and system, and the analysis method comprises the steps: adjusting the environment condition of a test system, and enabling the test system to meet the actual operation environment condition of a thermal power generating unit; measuring the experimental system by adopting an electrochemical alternating-current impedance method to obtain electrochemical impedance spectroscopy data of the electrode system; and analyzing the acquired electrochemical impedance spectroscopy data. According to the method, the actual operation environment condition of the thermal power generating unit can be approached, in addition, the accurate FAC experiment data is greatly helpful for the mechanism analysis of the FAC, the accurate FAC experiment data can be obtained under the environment condition of an electrochemical measurement method and a control experiment system, and the FAC phenomenon in a water supply and drainage system can be eliminated.

Description

Technical field [0001] The present application relates to the field of flow accelerated corrosion experiments, in particular, to a flow acceleration corrosion experiment test analysis method and system. Background technique [0002] Flow-Accelerated-Corrosion, referred to as FAC) refers to a magnetite oxide film generated by a carbon steel or low alloy steel in an inner surface of the thermal engine group. To the process of fluid or wet steam. The hidden dangers of flow acceleration corrosion bring the power station are constantly thinned by corrosion failure. It is likely to suddenly rupture at a certain point in time, causing high temperature steam inside the device to leak or eject, causing a huge threat to the lives around the equipment and staff. At present, the ultrasonic thickness (UT) is usually monitored in a manner that the thermal power station many dangerous areas is usually used. Low method. Therefore, it is very important to analyze the FAC experiment system of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/416
CPCG01N27/416
Inventor 徐奇杨华程奎张腾飞郑海涛罗国权
Owner 中国电建集团江西省电力设计院有限公司
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