油管缺陷在线检测仪的研究  

An On-line Instrument for Localized Defect Inspection and Wall Thickness Measurement in Oil Well Tubing

作　　者：金建华[1] 康宜华[1] 杨叔子[1] 谭多鸿[2] 窦建庆[2] 郑承明[2] 

机构地区：[1]华中理工大学机械科学与工程学院，武汉 430074 [2]江汉机械研究所，湖北 荆州 434000

出　　处：《仪表技术与传感器》2000年第11期18-20,24,共4页Instrument Technique and Sensor

摘　　要：文中研究了油管局部缺陷和壁厚减薄缺陷的漏磁场检测原理。研制了一种新型的井口式油管缺陷检测仪 ,缺陷检测传感器的组合式探头具有自动张合、浮动和随动功能 ,能够满足油管在线检测对检测传感器的要求。仪器可用在井口对油管进行在线连续定量检测 ,检测结果不受管表面的油泥或其它非导磁性材料的影响。测试表明 ,该仪器具有精度和分辨率高 ,结构简单 ,安装方便 。Based on the magnetic leakage flux technique, the principle of localized defect inspection and wall thickness measurement in oil well tubing has been researched. A new wellhead inspection instrument has been developed. The probes of the detector have such functions meeting the requirements of on-line inspection as automatically open-and-close, drifting and servocontrol. The instrument can be used in on-line continuous quantitative inspection of oil well tubing covered with greasy dirt or other non-magnetic materials. Tests show that the instrument has reliable properties such as high accuracy, high resolution, good stability, repetitiveness and anti-interference, etc.

关 键 词：磁性检测 漏磁场 壁厚减薄 油管 局部缺陷 

分 类 号：TE973.6[石油与天然气工程—石油机械设备]