抽油杆横向裂纹漏磁检测的有限元分析  

Finite Element Analysis of Magnetic Flux Leakage Detection for Transverse Cracks of Sucker Rod

作　　者：张欧 魏学业[1] 王培 严曙馨 Zhang Ou;Wei Xueye;Wang Pei;Yan Shuxin(School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《系统仿真学报》2018年第4期1504-1510,共7页Journal of System Simulation

摘　　要：针对抽油杆复杂缺陷共存的表面横向裂纹进行建模和检测技术研究,建立了抽油杆横向缺陷有限元仿真模型,采用ANSYS有限元仿真软件进行了漏磁检测仿真,得出了提离值与缺陷处漏磁场之间的变化趋势。分析了单直流线圈和双直流线圈两种不同的磁化方式,结果表明双直流线圈磁化优于单直流线圈磁化。研究了二维和三维的漏磁检测模型,对不同提离值的磁感应强度进行了分析,凝练出了传感器与检测装置中的关键数据。研究结果表明,本研究得出的漏磁检测方法可用于抽油杆横向裂纹的检测。The modeling and testing technology of the surface transverse cracks of complex defecting for sucker rod were studied, and a finite element simulation model of rod transverse defects was built. The magnetic flux leakage testing simulation was carried out by using ANSYS software, and the changing trend between the lift-off value and the leakage magnetic field was obtained. Two kinds of different magnetization modes of single coil and double coils were analyzed, and the result showed that the double coils magnetization is superior to single coil magnetization. The two dimensional and three dimensional magnetic flux leakage testing models were studied. The magnetic induction intensities of different lift-off values were analyzed. The key data between sensor and detection device were extracted. Simulation results showed that the magnetic flux leakage detection method can be used to detect transverse cracks of sucker rod.

关 键 词：漏磁检测 有限元分析 线圈磁化 提离值 抽油杆 

分 类 号：TE931[石油与天然气工程—石油机械设备] TP391[自动化与计算机技术—计算机应用技术]