储罐直径对罐壁腐蚀缺陷的漏磁场信号影响分析
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摘要
受腐蚀因素影响,储罐易发生腐蚀泄漏,储罐罐壁腐蚀一直是无损检测的难点,开展罐壁腐蚀缺陷漏磁检测技术研究。在轴向磁化方式下,对储罐壁板缺陷进行漏磁检测时,受壁板直径影响,同一缺陷处不同检测通道的漏磁信号不同,分析各通道漏磁信号与储罐直径的关系,得出直径与各通道漏磁信号峰值的数学模型;在此基础上对各通道漏磁信号进行预处理,建立修正系数,以消除不同通道之间的漏磁信号差异,实现各通道信号均匀化。
Influenced by corrosion,the tank tends to cause leakage. It is a difficult point to detect tank wall corrosion using non-destructive testing. In order to solve this situation,this topic proposed a method to research corrosion defects for tank wall by magnetic flux leakage( MFL). In axial magnetization mode,the MFL signals detected with different detect channels for the same defect are different,which caused by wall plate diameter. A mathematical model of the relationship between diameter and MFL signal peak is constructed,based on analysis of the signal and tank diameter. Furthermore,MFL signals of each channel are pre-processed and the correction coefficient is established. According to computing model,the signals detected by different channels of the same defect can achieve homogeneously.
Influenced by corrosion,the tank tends to cause leakage. It is a difficult point to detect tank wall corrosion using non-destructive testing. In order to solve this situation,this topic proposed a method to research corrosion defects for tank wall by magnetic flux leakage( MFL). In axial magnetization mode,the MFL signals detected with different detect channels for the same defect are different,which caused by wall plate diameter. A mathematical model of the relationship between diameter and MFL signal peak is constructed,based on analysis of the signal and tank diameter. Furthermore,MFL signals of each channel are pre-processed and the correction coefficient is established. According to computing model,the signals detected by different channels of the same defect can achieve homogeneously.
引文
1杨志军,戴光,陈志华.储罐底板漏磁检测腐蚀缺陷轮廓反演方法[J].无损检测,2013,35(10):45-47,52Yang Zhijun,Dai Guang,Chen Zhihua.Defect profile inversion by leakage magnetic field for tank bottom corrosion defect[J].Nondestructive Testing,2013,35(10),45-47,52
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6张鑫,许乃迪,于楠.储罐防腐工程中防腐涂料的选择与应用[J].广东化工,2012,39(11):165-166,72Zhang Xin,Xu Naidi,Yu Nan.The selection and application of anticorrosion coatings in tank corrosion engineering[J].Guangdong Chemical Industry,2012,39(11):165-166,72
7杨鹏,黄松岭,赵伟.在役大型储罐壁板无损检测技术[J].无损检测,2009,31(5):377-380,401Yang Peng,Huang Songling,Zhao Wei.Nondestructive testing techniques for the wall of tank in service[J].Nondestructive Testing,2009,31(5):377-380,401
8 Wu J,Fang H,Li L,et al.A lift-off-tolerant magnetic flux leakage testing method for drill pipes at wellhead[J].Sensors,2017,17(1):1-11
9戴光,孙立强,杨志军,等.圆筒形容器漏磁内检测ANSYS仿真分析与试验[J].无损检测,2013,35(3):25-29Dai Guang,Sun Liqiang,Yang Zhijun,et al.ANSYS simulation analysis and experiment on internal magnetic flux leakage testing of cylindrical vessels[J].Nondestructive Testing,2013,35(3):25-29
10 Rajan N,Kannan C,Arvind G.Experimental investigation and simulation of magnetic flux leakage from metal loss defects[J].Journal of Failure Analysis and Prevention,2017,17(3):595-601
11 Suresh V,Abudhahir A.An analytical model for prediction of magnetic flux leakage from surface defects in ferromagnetic tubes[J].Measurement Science Review,2016,16(1):8-13
12吴德会,柳振凉,张忠远,等.漏磁检测中提离值影响的三维有限元仿真分析[J].应用基础与工程科学学报,2013,21(6):1188-1198Wu Dehui,Liu Zhenliang,Zhang Zhongyuan,et al.3-D FEM simulation of lift-off effects on magnetic flux leakage testing[J].Journal of Basic Science and Engineering,2013,21(6):1188-1198
13崔伟,黄松岭,赵伟.传感器提离值对管道漏磁检测的影响[J].清华大学学报(自然科学版),2007,47(1):21-24Cui Wei,Huang Songling,Zhao Wei.Impact of sensor lift-off on magnetic flux leakage detection in pipelines[J].Journal of Tsinghua University(Science and Technology),2007,47(1):21-24
14 Parra-Raad J A,Roa-Prada S.Multi-objective optimization of a magnetic circuit for magnetic flux leakage-type non-destructive testing[J].Journal of Nondestructive Evaluation,2016,35:1-12
15张青春.长输油管道漏磁检测信号处理与缺陷重构技术研究[D].哈尔滨:哈尔滨工程大学,2016Zhang Qingchun.Research on signal processing and defect reconstruction technology of magnetic flux leakage detection of long-distance oil pipeline[D].Harbin:Harbin Engineering University,2016
16 Saha S,Mukhopadhyay S,Mahapatra U,et al.Empirical structure for characterizing metal loss defects from radial magnetic flux leakage signal[J].NDT&E International,2010,43(6):507-512
2李亚梅,唐东林,赖欣,等.储罐罐壁缺陷的低速漏磁检测研究[J].科学技术与工程,2016,16(15):154-158Li Yamei,Tang Donglin,Lai Xin,et al.Research on low-speed MFL testing to tank wall[J].Science Technology and Engineering,2016,16(15):154-158
3葛晓霞,董希琳,郭其云.大型石油储罐区消防安全对策研究[J].石油工程建设,2008,34(3):1-5,72Ge Xiaoxia,Dong Xilin,Guo Qiyun.Study on fire safety countermeasure of large oil tank deport[J].Petroleum Engineering Construction,2008,34(3):1-5,72
4 Paul N J,Duari B,Khoory A J.Corrosion in above ground storage tanks and its control[J].Paintindia,2013,63:86-90
5 Wang Y,Liu M,Liu F,et al.Research on the effect of wall corrosion and rim seal on the withdrawal loss for a floating roof tank[J].Environmental Science and Pollution Research,2018,25(19):18434-18442
6张鑫,许乃迪,于楠.储罐防腐工程中防腐涂料的选择与应用[J].广东化工,2012,39(11):165-166,72Zhang Xin,Xu Naidi,Yu Nan.The selection and application of anticorrosion coatings in tank corrosion engineering[J].Guangdong Chemical Industry,2012,39(11):165-166,72
7杨鹏,黄松岭,赵伟.在役大型储罐壁板无损检测技术[J].无损检测,2009,31(5):377-380,401Yang Peng,Huang Songling,Zhao Wei.Nondestructive testing techniques for the wall of tank in service[J].Nondestructive Testing,2009,31(5):377-380,401
8 Wu J,Fang H,Li L,et al.A lift-off-tolerant magnetic flux leakage testing method for drill pipes at wellhead[J].Sensors,2017,17(1):1-11
9戴光,孙立强,杨志军,等.圆筒形容器漏磁内检测ANSYS仿真分析与试验[J].无损检测,2013,35(3):25-29Dai Guang,Sun Liqiang,Yang Zhijun,et al.ANSYS simulation analysis and experiment on internal magnetic flux leakage testing of cylindrical vessels[J].Nondestructive Testing,2013,35(3):25-29
10 Rajan N,Kannan C,Arvind G.Experimental investigation and simulation of magnetic flux leakage from metal loss defects[J].Journal of Failure Analysis and Prevention,2017,17(3):595-601
11 Suresh V,Abudhahir A.An analytical model for prediction of magnetic flux leakage from surface defects in ferromagnetic tubes[J].Measurement Science Review,2016,16(1):8-13
12吴德会,柳振凉,张忠远,等.漏磁检测中提离值影响的三维有限元仿真分析[J].应用基础与工程科学学报,2013,21(6):1188-1198Wu Dehui,Liu Zhenliang,Zhang Zhongyuan,et al.3-D FEM simulation of lift-off effects on magnetic flux leakage testing[J].Journal of Basic Science and Engineering,2013,21(6):1188-1198
13崔伟,黄松岭,赵伟.传感器提离值对管道漏磁检测的影响[J].清华大学学报(自然科学版),2007,47(1):21-24Cui Wei,Huang Songling,Zhao Wei.Impact of sensor lift-off on magnetic flux leakage detection in pipelines[J].Journal of Tsinghua University(Science and Technology),2007,47(1):21-24
14 Parra-Raad J A,Roa-Prada S.Multi-objective optimization of a magnetic circuit for magnetic flux leakage-type non-destructive testing[J].Journal of Nondestructive Evaluation,2016,35:1-12
15张青春.长输油管道漏磁检测信号处理与缺陷重构技术研究[D].哈尔滨:哈尔滨工程大学,2016Zhang Qingchun.Research on signal processing and defect reconstruction technology of magnetic flux leakage detection of long-distance oil pipeline[D].Harbin:Harbin Engineering University,2016
16 Saha S,Mukhopadhyay S,Mahapatra U,et al.Empirical structure for characterizing metal loss defects from radial magnetic flux leakage signal[J].NDT&E International,2010,43(6):507-512