油气管道环焊缝缺陷内检测技术现状与展望  

Current status and prospect of inline inspection technologies for defects in girth weld of oil and gas pipeline

作　　者：王婷[1] 杨辉[1] 冯庆善[2] 周利剑[1] 王富祥[1] 项小强[2] 

机构地区：[1]中国石油管道科技研究中心中国石油天然气集团公司油气储运重点实验室,河北廊坊065000 [2]中国石油管道公司,河北廊坊065000

出　　处：《油气储运》2015年第7期694-698,共5页Oil & Gas Storage and Transportation

基　　金：PRCI课题"管道环焊缝缺陷检测与评价技术研究";NDE-1-6

摘　　要：由于近年来油气管道环焊缝开裂事故时有发生,环焊缝缺陷内检测技术受到广泛关注。分析了最近几年国内外油气管道环焊缝开裂事故及其原因,指出在油气管道环焊缝开裂事故中,致因缺陷多为裂纹、未焊透和未熔合,以及较为尖锐的咬边,且大多萌生于管道内表面,其应力集中程度高,极大地削弱了管道的承载能力。探讨了漏磁内检测、超声波内检测、电磁超声内检测、电磁涡流内检测4种管道环焊缝缺陷内检测技术的研究现状、技术特点、应用局限、研究方向和发展趋势,以期为攻克油气管道环焊缝检测这一国际性技术难题提供参考。In recent years, incidents related to cracking of girth welds in oil and gas pipelines occurred frequently. Accordingly, inline inspection technologies for defects in girth weld attracted extensive attention. Through reviewing of domestic and overseas incidents involving such cracking and relevant causes, it is found that most of the incidents were caused by defects such as cracks, incomplete penetration and incomplete fusion and sharp undercuts, and these defects often occurred on inner surface of pipelines. With highly concentrated stresses, these defects may significantly reduce bearing capacity of pipelines. This paper reviews the current status, features, limits, future development and directions of four detection technologies for defects in girth weld, namely, magnetic flux leakage testing, ultrasonic inline inspection, electromagnetic ultrasonic inline inspection, and electromagnetic vortex inline inspection. Relevant research results may provide some solutions to technical challenges related to inspection of girth weld in oil and gas pipelines.

关 键 词：油气管道 环焊缝 缺陷 内检测 

分 类 号：TE88[石油与天然气工程—油气储运工程]