Research on the detection technology of corrosion defects on the heating surface tube inner walls of the power station boiler

Huadian Technology ›› 2018, Vol. 40 ›› Issue (11): 12-16.

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Research on the detection technology of corrosion defects on the heating surface tube inner walls of the power station boiler

Datang CentralChina Electric Power Test Research Institute, Zhengzhou 450000, China

Online:2018-11-25 Published:2018-12-29

Abstract

Abstract:

Considering the limitation of the corrosion defects detection method for the heating surface tube inner walls of the current boilers in power plants, a special array lowfrequency eddy current probe is designed. Combined with the requirements on the supervision and inspection of the heating tubes of boilers, contrast test tube samples with axial and circumferential artificial defects are made respectively to study the sensitivity of array low frequency eddy current test. Field application shows that the array lowfrequency eddy current test can improve the detection efficiency of corrosion defects on the inner wall of the boiler heating surface tube, with less missing defects.

Key words:

heating surface tube of the boiler, inner wall corrosion, defects inspection, array lowfrequency eddy current probe

ZHU Guobin, JIA Shaowei, WANG Jingwei, JIANG Ye, LIU Wensheng, WANG Dong.

Research on the detection technology of corrosion defects on the heating surface tube inner walls of the power station boiler

[J]. Huadian Technology, 2018, 40(11): 12-16.

Research on the detection technology of corrosion defects on the heating surface tube inner walls of the power station boiler

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