电站锅炉管道弯头超声波相控阵检测

华电技术 ›› 2011, Vol. 33 ›› Issue (3): 29-30.

电站锅炉管道弯头超声波相控阵检测

余道国

机械工业第六设计研究院，河南郑州450007

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-03-25 发布日期:2011-03-25

Inspection of pipe bends of power plant boiler using ultrasonic phased array technology

YU Daoguo

No.6 Institute of Project Planning & Research of Machinery Industry, Zhengzhou 450007, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-03-25 Published:2011-03-25

摘要/Abstract

摘要： 在对省煤器至汽包联络弯头定期监测中发现超标反射信号。使用A型脉冲反射法检测，发现了缺陷信号却无法对缺陷进行准确判断；使用超声波衍射时差法对缺陷进行复检，无法检测出缺陷；使用超声波相控阵法检测后，很容易检测出缺陷，根据相控阵检测结果，能对缺陷做出准确判断。
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关键词: A型脉冲反射法, 超声波衍射时差法, 超声波相控阵法, 扇形扫描, B扫描

Abstract: In the periodical inspection of the connecting pipe bend from economizer to steam drum, it was found that the reflection signal exceeds the specified value. Using A scan pulse echo technology, the flaw echo could be found, but the exact defect information could not be judged. Using the TOFD technique to recheck, the defect could not be detected. When using the ultrasonic wave phased array method, the defect was detected easily. Based on the detection results of ultrasonic wave phased array method, the exact defect information could be obtained.

Key words: A scan pulse echo method, time of flight diffraction technique, ultrasonic wave phased array method, sector scan, B scan

余道国. 电站锅炉管道弯头超声波相控阵检测[J]. 华电技术, 2011, 33(3): 29-30.

YU Daoguo. Inspection of pipe bends of power plant boiler using ultrasonic phased array technology[J]. Huadian Technology, 2011, 33(3): 29-30.