非标件压力管道加厚弯头凹坑腐蚀超声相控阵检测的应用  

The Application of Pits Corrosion of Nonstandard Pressure Pipeline Thickening Elbow Using Ultrasonic Phased Array Technology

作　　者：康小伟[1] 何仁洋[1] 黄辉[1] 陈金忠[1] 

机构地区：[1]中国特种设备检测研究院,北京100013

出　　处：《全面腐蚀控制》2013年第12期37-39,79,共4页Total Corrosion Control

摘　　要：本文应用超声波相控阵技术,对非标件的压力管道加厚弯头凹坑腐蚀减薄进行了检测。检测发现,加厚弯头因其内部凹槽腐蚀特殊性,普通超声波测厚无法完成,而相控阵技术因其探头晶片聚焦功能可实现对加厚弯头腐蚀凹坑的识别,相控阵检测图像信号清晰完整,最后对检测有异常信号的弯头进行解剖,发现相控阵检测的缺陷信号与非标件弯头凹坑缺陷相符合,为今后检测非标件压力管道加厚弯头内部凹坑缺陷提供了有效的技术支持。In this paper, a nonstandard parts of pressure pipeline thickening elbow pits corrosion were detected by ultrasonic phased array technology. Ordinary ultrasonic testing can＇ t be completed because of thickening elbow＇ s internal pit corrosion particularity. However, phased array probe chip＇ s focus function can detect thickening elbow pits corrosion. Phased array detection＇ s picture and signal were clear and complete. Finally, elbows which phased array signal was abnormal were dissected. It found that phased array defect＇ s signal and the nonstandard parts elbow pit defects were same. Phased array technology provide effective technical support for internal pit defects of nonstandard parts pressure pipeline thickening elbow in the future.

关 键 词：相控阵 管道 凹坑腐蚀 弯头 

分 类 号：TE88[石油与天然气工程—油气储运工程]