储罐底板-补板缺陷漏磁场影响因素分析  

Analysis of Influencing Factors of Magnetic Leakage Field of Defects in the Patch Plates of Storage Tank Bottom Plate

作　　者：刘玉琢 于永亮 高廷岩 方学锋 何芬 Liu Yuzhuo;Yu Yongliang;Gao Tingyan;Fang Xuefeng;He Fen(Nanjing Boiler & Pressure Vessel Supervision and Inspection Institute,Nanjing 210019,China;Nanjing Airport Oil Material Co. , Ltd. , Nanjing 210000,China)

机构地区：[1]南京市锅炉压力容器检验研究院,南京210019 [2]南京空港油料有限公司,南京210000

出　　处：《压力容器》2019年第7期60-68,共9页Pressure Vessel Technology

基　　金：国家质量监督检验检疫总局科技项目(2017QK050);江苏省质量技术监督局科技项目(KJ168381)

摘　　要：储罐由于内部储存的复杂介质的作用经常发生腐蚀现象,很多底板都进行了补板维修,国内外对补板检测的研究鲜有报道,因此,迫切需要对补板展开研究工作。以漏磁检测为基础,仿真求解6,8,10 mm补板漏磁检测的合理气隙距离,分析了不同气隙距离、不同板间距和不同缺陷深度的补板漏磁场空间分布特性,并采用漏磁检测自动行走装置对补板检测进行试验验证,试验结果与仿真结果一致。corrosion phenomenon often occurs on storage tanks due to the action of the complex media inside the tank,many bottom plates were repaired.However,there are few reports on the detection of patch plates at home and abroad.Therefore,it is urgent to carry out researches on patch plates.Based on magnetic flux leakage (MFL) testing,the optimum air gap distances of 6mm,8mm and 10mm patch plates were simulated and the spatial distribution characteristics of MFL field of patch plates with different air gap distance,plate spacing and defect depth were analyzed.The automatic walking device for MFL detection was used to verify the patch plate detection.The test results were consistent with the simulated results.

关 键 词：储罐 漏磁检测 补板 腐蚀 

分 类 号：TH49[机械工程—机械制造及自动化] TE973.6[石油与天然气工程—石油机械设备]