管杆漏磁探伤现场应用中的问题及对策  

Problems and measures on application of flux leakage test of tubing and rod

作　　者：陈宏道[1] 康杰[1] 

机构地区：[1]胜利油田有限公司孤东采油厂

出　　处：《石油机械》2002年第8期45-48,0,共4页China Petroleum Machinery

摘　　要：阐述了漏磁探伤漏磁场沿管、杆径向的分布特征 ,分析了影响探伤装置漏磁检测准确性的 4个因素 ,验证了信号提离距离的变化对传感器和探伤装置灵敏度的影响。针对在用的大多数浮动式传感器固定机构存在的两个严重缺点 ,提出采用自定位传感器固定机构 ,可消除机械装置对传感器灵敏度的影响。提出了一套标定和校验检测装置的方法 ,以保证探伤仪器的检测灵敏度始终恒定 ,提高检测结果的准确性和可靠性。Characteristics that magnetic field of the leaked flux distributes racially along tubing / rod is described. 4 factors which influence precision of the flux leakage testing apparatus are analyzed. Influence of enhancing signal and changing of the distance on sensor and sensitivity of the testing apparatus are validated. A self-orient fixing mechanism which can eliminates influence of mechanical parts on sensors is presented. A method demarcating and verifying testing apparatus is presented to ensure constant sensitivity of the testing apparatus, and improve precision and reliability of the testing results.

关 键 词：漏磁探伤 油管 抽油杆 漏磁检测 准确性 校验 

分 类 号：TE933.2[石油与天然气工程—石油机械设备]