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储罐底板补板腐蚀缺陷的漏磁场特性

杨志军, 刘玉琢, 吴忠义, 于永亮

杨志军, 刘玉琢, 吴忠义, 于永亮. 储罐底板补板腐蚀缺陷的漏磁场特性[J]. 无损检测, 2018, 40(10): 60-64. DOI: 10.11973/wsjc201810014
引用本文: 杨志军, 刘玉琢, 吴忠义, 于永亮. 储罐底板补板腐蚀缺陷的漏磁场特性[J]. 无损检测, 2018, 40(10): 60-64. DOI: 10.11973/wsjc201810014
YANG Zhijun, LIU Yuzhuo, WU Zhongyi, YU Yongliang. Magnetic Leakage Field Characteristics of Corrosion Defects in Substrate Plate of Storage Tank[J]. Nondestructive Testing, 2018, 40(10): 60-64. DOI: 10.11973/wsjc201810014
Citation: YANG Zhijun, LIU Yuzhuo, WU Zhongyi, YU Yongliang. Magnetic Leakage Field Characteristics of Corrosion Defects in Substrate Plate of Storage Tank[J]. Nondestructive Testing, 2018, 40(10): 60-64. DOI: 10.11973/wsjc201810014

储罐底板补板腐蚀缺陷的漏磁场特性

基金项目: 

国家自然科学基金资助项目(11272084);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)

详细信息
    作者简介:

    杨志军(1976-),男,博士,副教授,主要从事现代无损检测技术的研究

    通讯作者:

    杨志军, E-mail:yangzjzj@163.com

  • 中图分类号: TG115.28

Magnetic Leakage Field Characteristics of Corrosion Defects in Substrate Plate of Storage Tank

  • 摘要: 在石油石化行业中,储罐底板经常发生腐蚀而进行补板维修。对有补板的储罐底板的腐蚀情况进行准确评价是检测人员面临的迫切需要解决的问题。采用漏磁检测技术对储罐底板和补板进行研究分析,建立了补板缺陷漏磁场的有限元模型,得到了缺陷不同位置时漏磁场的空间分布特性。在实验室条件下进行缺陷不同位置的对比试验,试验结果与仿真分析一致。磁化结构在磁化被检件过程中,会先把补板磁化至近饱和状态,磁化程度和单板试验的磁化程度相差不大,但补板缺陷处产生的漏磁场会优先从未被磁化至饱和状态的原底板中穿过,致使缺陷量化结果小于实际值。
    Abstract: In the petroleum and petrochemical industry, tank bottoms are often corroded and patch repairs are performed. Accurate evaluation of the bottom corrosion of the tank floor with patch plates is an urgent task for the inspectors. In this paper, the magnetic flux leakage detection technology is used to study and analyze the tank bottom plate and the patch plate. The finite element model of the leakage magnetic field of the patch defect is established, and the spatial distribution characteristics of the leakage magnetic field at different positions of the defect are obtained. Experiments were carried out on different positions of defects under laboratory conditions. The experimental results were consistent with the simulation analysis. The magnetization structure magnetizes the plate to a near-saturation state during the magnetization of the part to be inspected. The degree of magnetization and the degree of magnetization of the single plate experiment are similar. However, the leakage magnetic field generated at the patch defect will preferentially pass through the original substrate that has not been magnetized to saturation, resulting in a defect quantification result that is smaller than the actual value.
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    [2] 王朝璋,慕进良,钟卡.国内外储罐泄漏检测技术现状[J]. 油气储运,2016,35(10):1038-1041,1049.
    [3] 戴光,于永亮,杨志军,等. 管道缺陷与补板漏磁场识别技术研究[J]. 管道技术与设备, 2010(2):22-25.
    [4] 胡春阳. 油气管道特殊部件的漏磁检测技术研究[D].沈阳:沈阳工业大学,2015.
    [5] 唐莺,罗飞路,潘孟春,等.脉冲漏磁检测的三维场特征分析及缺陷分类识别[J].仪器仪表学报,2009,30(12):2506-2510.
    [6] 陈德姝. 储罐底板缺陷漏磁场空间分布特性研究[D]. 大庆:东北石油大学,2017.
    [7] 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):1188-1198.
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出版历程
  • 收稿日期:  2018-05-08
  • 刊出日期:  2018-10-09

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