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[1]付双成,余冰锋,辛佳兴,等.基于偏置交流电磁场检测的管道裂纹内检测方法[J].油气储运,2024,43(09):1-11.
　FU Shuangcheng,YU Bingfeng,XIN Jiaxing,et al.Internal detection method of pipeline crack based on biased alternating current field measurement[J].Oil & Gas Storage and Transportation,2024,43(09):1-11.
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基于偏置交流电磁场检测的管道裂纹内检测方法

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 43 期数: 2024年09期 页码: 1-11 栏目: 出版日期: 2024-09-25
Title:
Internal detection method of pipeline crack based on biased alternating current field measurement
作者:
付双成; 余冰锋; 辛佳兴; 丁融; 杨帆; 闾宏为; 陈金忠; 完小康
1.常州大学机械与轨道交通学院；2.中国特种设备检测研究院；3.国家管网集团西部管道有限责任公司
Author(s):
FU Shuangcheng; YU Bingfeng; XIN Jiaxing; DING Rong; YANG Fan; LYV Hongwei; CHEN Jinzhong; WAN Xiaokang
1. School of Mechanical Engineering and Rail Transit, Changzhou University;2. China Special Equipment Inspection and Research Institute;3. PipeChina West Pipeline Company
关键词:
偏置交流电磁场检测; 裂纹检测; 裂纹角度; 裂纹深度; 有限元分析
Keywords:
B-ACFM;  crack detection;  crack angle;  crack depth;  finite element analysis
分类号:
TE832
文献标志码:
A
摘要:
【目的】传统管道漏磁检测技术对于与磁力线夹角较小的裂纹缺陷检出能力不足，为保障油气管道的安全运行，亟需一种能够准确检出上述缺陷的检测方法。【方法】结合漏磁与交流电磁场检测技术的优势，提出了一种基于偏置交流电磁场检测技术的管道裂纹内检测方法。根据偏置交流电磁场检测基本原理，分析了裂纹角度对试件内部磁场及表面涡流场分布的变化规律，通过建立有限元分析模型，厘清了管道有无裂纹对其内部磁场及表面涡流场分布的影响，并搭建了偏置交流电磁场检测实验平台，验证了方法的可行性。【结果】对于内壁不同角度裂纹：在0°～15°时，信号特征呈现出先波谷后波峰的分布，而在15°～90°时，发生相位翻转，信号特征呈现出先波峰后波谷的分布，当内壁裂纹角度为0°~45°时，裂纹响应信号峰谷值Umax-min随内壁裂纹角度的增大逐渐减小；当内壁裂纹角度超过45°时，Umax-min随内壁裂纹角度增大而增大。对于内外壁不同深度裂纹，其响应信号特征均呈现出先波峰后波谷的分布，Umax-min随内外壁裂纹深度的增加逐渐增大。【结论】该方法可有效识别管道内壁0.3 mm宽的不同角度裂纹及0.5 mm宽的90°不同深度裂纹，且对外壁0.5 mm宽、90°、不同深度裂纹的最小检测深度为30%壁厚，具备对管道内壁不同角度裂纹及内外壁不同深度裂纹的定量识别能力。
Abstract:
Traditional pipeline Magnetic Flux Leakage (MFL) detection technology is not capable of detecting cracks and defects with a small Angle from the magnetic field line. In order to ensure the safe operation of oil and gas pipelines, a detection method that can accurately detect the above defects is urgently needed. Combining the advantages of MFL and Alternating Current Field Measurement (ACFM) technology, a new method for detecting cracks in pipelines based on Biased Alternating Current Field Measurement (B-ACFM) is proposed. According to the basic principle of B-ACFM, the variation law of crack Angle on the distribution of internal magnetic field and surface eddy current field of the specimen was analyzed. By establishing the finite element analysis model, the influence of whether there is crack in the pipeline on the distribution of internal magnetic field and surface eddy current field was clarified, and the experimental platform of B-ACFM was built to verify the feasibility of the method. For cracks at different angles on the inner wall of the pipeline: At 0°~ 15°, the signal characteristics present a distribution of first trough followed by peak, while at 15°~90°, the phase flipping occurs, and the signal characteristics present a distribution of first peak followed trough, and with the increase of the crack angle on the inner wall of the pipeline, the crack response signal peak and trough value Vmax-min curve presents a negative correlation between 0°~45°. When 45°~90°, there is a positive correlation. For cracks at different depth on the inner and outer walls of the pipeline, the response signal characteristics showed the distribution of first peak and then trough, and the Vmax-min curve showed a positive correlation with the increase of the crack depth in the inner and outer walls. The method can effectively identify cracks at different angles of 0.3 mm wide on the inner wall of the pipeline and cracks at different depths of 90° of 0.5 mm wide on the outer wall, and the minimum detection depth of 90° cracks at different depths of 0.5 mm wide on the outer wall is 30% t, which has the quantitative identification ability of cracks at different angles on the inner wall of the pipeline and cracks at different depths on the inner wall of the pipeline.

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备注/Memo

基金项目：“十四五”国家重点研发计划“超大口径天然气管道磁电融合内检测技术研究及装备研制”，2022YFC3070102；中国特种设备检测研究院重点项目“油气管道内表面缺陷检测自爬行机器人”，2022重点01；中国特检院青年科技英才项目，KJYC-2023-10。
作者简介：付双成，男，1976年生，教授，2009年博士毕业于中国石油大学（北京）化工过程机械专业，现从事流体流动数值模拟、多相流分离技术与设备、过程装备结构优化等方向的研究工作。地址：江苏省常州市武进区湖塘镇滆湖中路21号，213164。电话：15295086176。Email：fushch711@163.com
通信作者：辛佳兴，男，1994年生，工程师，2023年博士毕业于中国石油大学（北京）机械工程专业，现从事油气管道在线检测技术方向的研究工作。地址：北京市朝阳区和平西苑2号，100029。电话：18811526276。Email：jiaxingxin_cup@163.com

更新日期/Last Update: 2024-06-28