管道周向励磁漏磁检测的ANSYS仿真分析

Simulation on Circumferential Magnetic Flux Leakage Detection in Pipeline using ANSYS

周向励磁漏磁检测技术是一种管道漏磁检测技术,它对于检测和评定轴向导向的缺陷具有潜在的优势。通过分析周向励磁漏磁检测原理,利用ANSYS有限元仿真软件,建立了静态状态下周向磁化器的三维有限元模型,对管壁缺陷进行仿真分析。仿真结果表明,在周向励磁检测方式下,管道缺陷处产生的漏磁信号与缺陷的轴向长度、周向宽度的大小及提离值有关。

The circumferential excitation magnetic flux leakage detection technology is a kind of pipeline magnetic flux leakage detection technology with a potential advantage for the detection and evaluation of axially oriented defects. By analyzing the principle of circumferential excitation magnetic flux leakage detection, a 3D finite element model of circumferential magnetization device in static state was established using ANSYS finite element simulation software. The tube wall defects were simulated. The simulation results show that the magnetic flux leakage signal at the defect is related to the axial length, circumferential width and liftoff of the defect in the mode of the circumferential excitation.