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[1]宫彦双,完小康,王宏军,等.基于增量磁导率提取的油气管道正交差分涡流内检测技术[J].油气储运,2024,43(08):1-15.
GONG Yanshuang,WAN Xiaokang,WANG Hongjun,et al.Orthogonal Differential Eddy Current Internal Inspection Technology for Oil and Gas Pipelines Based on Incremental Permeability Extraction[J].Oil & Gas Storage and Transportation,2024,43(08):1-15.
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GONG Yanshuang,WAN Xiaokang,WANG Hongjun,et al.Orthogonal Differential Eddy Current Internal Inspection Technology for Oil and Gas Pipelines Based on Incremental Permeability Extraction[J].Oil & Gas Storage and Transportation,2024,43(08):1-15.
基于增量磁导率提取的油气管道正交差分涡流内检测技术
《油气储运》[ISSN:1000-8241/CN:13-1093/TE]
卷:
43
期数:
2024年08期
页码:
1-15
栏目:
出版日期:
2024-08-25
- Title:
- Orthogonal Differential Eddy Current Internal Inspection Technology for Oil and Gas Pipelines Based on Incremental Permeability Extraction
- Keywords:
- incremental permeability extraction; differential eddy current testing; internal testing; detection probe
- 分类号:
- TE88
- 文献标志码:
- A
- 摘要:
- 【目的】管道作为石油、天然气的主要运输方式，其运行工况复杂，易产生腐蚀、裂纹等缺陷。传统的漏磁检测设备由于质量大、磁吸力强，在小口径、低压管道中难以通过，且对于微小缺陷的检测能力不足；传统的涡流检测技术受趋肤效应的限制无法检出管道外壁及埋藏缺陷，同时难以识别缺陷的深度信息；超声检测由于需要耦合剂，不适用于天然气管道的检测。【方法】提出了直流磁化与正交差分涡流结合的管道缺陷检测技术，利用有限元分析方法探究了管道内、外表面缺陷对于管道内部涡流场和磁导率的影响规律。研制了正交差分涡流检测探头，开展了管道内、外表面缺陷动态扫查实验。【结果】研制的正交差分涡流检测探头对管道内、外壁腐蚀及内壁裂纹均有信号响应。随着腐蚀深度、长度、宽度的增加，响应信号的峰值和波峰波谷间距均呈现出正相关的变化规律。管道内壁腐蚀与埋藏、外壁腐蚀的响应信号相位相反，可以为缺陷位置的快速判定提供参考。【结论】研究成果对弥补传统漏磁、涡流检测技术的不足，促进管道在线检测技术的发展具有重要意义。
- Abstract:
- [Objective] As the main transportation mode of oil and natural gas, the pipeline has complex operating conditions and is easy to produce corrosion, cracks and other defects. The traditional magnetic flux leakage detection equipment has insufficient passing capacity in small-diameter and low-pressure pipelines due to its huge weight and magnetic attraction. Eddy current detection technology is limited by skin effect, so it is impossible to detect pipe outer wall and buried defects, and it is difficult to identify defect depth information. [Methods] This paper presents a new pipeline defect detection technology combining direct current magnetization and orthogonal difference eddy current, and uses finite element analysis method to explore the influence of pipeline internal and external surface defects on pipeline internal eddy current field and magnetic permeability. An orthogonal differential eddy current detection probe was developed and a dynamic scanning experiment was carried out for the defects on the inner and outer surfaces of the pipe. [Results] The developed orthogonality differential eddy current detection probe has signal response to the corrosion and crack on the inner and outer wall of the pipeline. With the increase of corrosion depth, length and width, the peak value of response signal and the interval between peak and trough show a positive correlation change law. The phase of response signal of pipeline inner wall corrosion is opposite to that of buried and outer wall corrosion, which can provide reference for quick determination of defect location. [Conclusion] The research results are of great significance to make up the shortcomings of traditional magnetic flux leakage and eddy current detection technology and promote the development of pipeline online detection technology.
更新日期/Last Update:
2024-04-29