| 用直流电位梯度法测量埋地管道防护层缺陷位置的模拟试验 |
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| 引用本文： | 巢栗苹. 用直流电位梯度法测量埋地管道防护层缺陷位置的模拟试验[J]. 腐蚀与防护, 2008, 29(5): 257-260 |
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| 作者姓名： | 巢栗苹 |
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| 作者单位： | 化学工业设备质量监督检验中心,南京,210024 |
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| 摘 要： | 介绍了埋地管道防护层缺陷电位梯度检测技术。用盐溶液、蒸馏水和自来水的混合液模拟土壤介质,通过改变管道防护层缺陷大小,改变环境电阻率和保护电流,试验证明了电位梯度检测技术能够比较准确地检测出管道防腐层缺陷的位置,并得到了管道埋深和地表电位梯度的关系。
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| 关 键 词： | 埋地管道 防护层 检测 电位梯度 |
| 文章编号： | 1005-748X(2008)05-0257-03 |
| 修稿时间： | 2007-05-22 |
Detection of Defect Locations in Coatings on Underground Pipelines by DCVG Technique |
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| CHAO Li-ping. Detection of Defect Locations in Coatings on Underground Pipelines by DCVG Technique[J]. Corrosion & Protection, 2008, 29(5): 257-260 |
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| Authors: | CHAO Li-ping |
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| Abstract: | The principle and method of the detection technique of DCVG is introduced.Through changing the size of defects,environment resistance rate,protective current,simulation tests proved that DCVG technique could detect the defect locations,and the relationship between the depth of underground pipeline and the earth surface voltage gradients could be obtained. |
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| Keywords: | buried pipeline anticorrosive coating detection voltage gradient |
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