Detection of Critical Welds of Ocean Platform Drilling Rig Substructure Using Alternating Current Field Measurement Technique
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摘要: 为了对带有涂层的在役海洋平台钻机底座焊缝进行检测,使用了交流电磁场(ACFM)检测方法.介绍了ACFM检测的基本原理,并与磁粉检测、涡流检测等表面缺陷检测方法进行了对比分析.基于平台底座结构及其所处环境的特点,确定了将ACFM检测系统成功应用于底座关键焊缝的表面或近表面缺陷检测,重点探讨了纵向裂纹和横向裂纹的ACFM扫描方法和信号识别.总结了ACFM现场工程应用的一般流程和检测程序,对其他工程结构的ACFM检测具有很好的借鉴意义.Abstract: A new method using alternating current field measurement(ACFM) has been proposed in order to nondestructively inspect the critical welds of the in-service offshore platform drilling rig substructure with coatings.The detection principle of ACFM method is first introduced and is compared and analyzed with other nondestructive testing methods for surface defects,including MT and ET.Based on the structural characteristics and the special working environment of the platform drilling rig substructure,the corresponding ACFM detection system is presented,which is applied successfully to test surface or sub-surface defects of the critical welds of the rig substructure,and the scanning methods and signal recognition for the longitudinal and transversal cracks are emphatically discussed.At last,the general process and detection procedure of engineering application using ACFM method are summarized systematically,providing a good reference for ACFM inspection of other engineering structures.
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[1] 李玉坤.胜利2号海洋钻井平台底座刚架结构强度分析[J].石油机械,2009,37(9):35-37. [2] 胡军,唐友刚,李士喜.海洋钻机井架振动检测及评估——以ZJ50/3150DB钻机为例[J].石油勘探与开发,2013,40(1):117-120. [3] 葛运春,马宝忠,吴文秀,等.在役海洋钻机底座承载能力分析[J].石油机械,2013,41(12):27-29. [4] 赵玉玲.海洋平台损伤检测的发展现状与展望[J].石油矿场机械,2007,36(2):10-14. [5] 单宝华,欧进萍.海洋平台结构管节点焊缝超声相控阵检测技术[J].焊接学报,2004,25(6):35-37. [6] TOPP D,JONES B A.Operational experience with the ACFM inspection technique for sub-sea weld inspection[J].Environmental Engineering,1994,7(1):9-13. [7] 陈勇,潘东民,邓平,等.交流电磁场检测信号的影响因素与裂纹的识别判定[J].无损检测,2013,35(9):61-65. [8] 张剑波.水下结构物检测与维修技术概论[M].北京:石油工业出版社,2005. [9] 冷建成,周国强,何庆军,等.基于ACFM的自升式海洋平台局部损伤检测[J].无损检测,2014,36(8):29-33.
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