压力容器2025，Vol.42Issue(12)：64-71,8.DOI:10.3969/j.issn.1001-4837.2025.12.008
剩磁与涡流耦合增强的油气管道裂纹内检测试验研究
Experimental study on remanent magnetism and eddy current coupling enhancement for crack in‑line inspection in oil and gas pipeline
摘要
Abstract
Cracks are critical defects in oil and gas pipelines,significantly reducing structural strength of the pipelines and increasing the probability of leakage or fracture,which poses a serious threat to transmission safety.In response to the above problems,based on the magnetic dipole model and magnetic permeability perturbation detection theory for ferromagnetic materials,a crack detection method utilizing the coupling effect between remanent magnetism and eddy current was proposed.By establishing a dynamic scanning experimental platform for cracks,crack detection tests under both remanent and non‐remanent magnetism conditions were carried out.A signal processing approach using the fast Fourier transform(FFT)was introduced to compare and analyze the waveform characteristics of eddy current response signals for both internal and external surface cracks.The results demonstrate that,compared with the single eddy current method,the proposed method enhances the peak-peak values for internal surface crack depth and width by 136.78%and 148.32%,respectively.At the same time,the method overcomes the limitations of the skin effect and exhibits good detection capability for external surface cracks.This study can provide key theoretical and experimental support for the development of internal inspection equipment for crack detection in oil and gas pipelines.关键词
油气管道/内检测/涡流/剩磁/裂纹Key words
oil and gas pipeline/in‐line inspection/eddy current/remanent magnetism/crack分类
机械制造引用本文复制引用
陈金忠,韩文博,辛佳兴,吴胜平,陈潇,马殿国..剩磁与涡流耦合增强的油气管道裂纹内检测试验研究[J].压力容器,2025,42(12):64-71,8.基金项目
国家重点研发计划课题(2023YFF0615101) （2023YFF0615101）
国家重点研发计划课题(2023YFC3010502) （2023YFC3010502）
国家市场监督管理总局科技计划项目(2024MK038,2024MK214) （2024MK038,2024MK214）
