管道漏磁内检测装置的磁路优化设计  

Optimization design of magnetic circuit in pipeline magnetic leakage internal detecting device

作　　者：杨理践[1] 崔益铭[1] 高松巍[1] 孔丽新[1] 

机构地区：[1]沈阳工业大学信息科学与工程学院,沈阳110870

出　　处：《沈阳工业大学学报》2010年第3期311-315,共5页Journal of Shenyang University of Technology

基　　金：国家自然科学基金仪表专项基金资助项目(60927004)

摘　　要：为了提高管道漏磁内检测装置的检测精度,针对漏磁检测装置的测量节部分,利用克希柯夫方程以及MATLAB软件对磁路进行优化设计.选择95A型霍尔传感器、Q235钢、N42型钕铁硼和铜制钢刷搭建管道漏磁内检测装置的测量节部分,并在含有线型和圆孔型标准伤的钢管内进行实验.根据采集到的漏磁信号对缺陷进行重构,实验结果表明,检测精度满足管道漏磁检测装置的设计要求,能够检测到深度是管壁厚度的10%、直径为1.5mm的圆形缺陷,验证了磁路优化设计的正确性.In order to improve the detecting accuracy of pipeline magnetic leakage internal detecting device, the optimization design of magnetic circuit was performed using Kirchhoff equation and MATLAB software for the measurement section of magnetic leakage detecting device. The measurement section of magnetic leakage detecting device was built by selecting 95A Hall sensor,Q235 steel,N42 permanent magnet brush. The experiment was conducted in the steel pipe with line and circular hole standard injuries. The defects were reconstructed with the collected magnetic leakage signals. The experimental results show that the detecting accuracy can satisfy the design requirements of pipeline magnetic leakage detecting device. The circular defect with the depth of 10% pipeline thickness and diameter of 1. 5 mm can be detected. In addition,the validity in optimization design of magnetic circuit gets verified.

关 键 词：输油管道 漏磁检测 磁路优化 磁导率 克希柯夫方程 霍尔传感器 磁化曲线 磁路模型 

分 类 号：TE973.6[石油与天然气工程—石油机械设备]