用电流梯度法检测埋地管道防腐层存在的问题及其改进方法
Existing Problems in Inspecting Anticorrosion Layer of Buried Pipeline by Current Gradient and Its Improved Methods
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- DOI:
- 作者:
- 王遂平, 隋国勇, 石仁委
WANG Sui-ping, SUI Guo-yong, SHI Ren-wei
- 作者单位:
- 胜利油田分公司技术检测中心腐蚀与防护研究所, 山东东营 257000
Corrosion and Protection Research Institute, Shengli Oilfield Technical Inspection Center, Dongying 257200, China
- 关键词:
- 埋地管道;防腐层;检测技术;电流梯度法
buried pipeline;anticorrosion;inspection technology;current gradient method
- 摘要:
- 对埋地管道进行防腐层检测最常用的方法是电流梯度法和电位梯度法,在理论条件下可以获得非常准确的检测数值与评价结果,然而,在实际检测中却常出现检测评价结果与实际不符的情况。文章结合工程实例,分析了电流梯度法检测架空出露管道段、防腐层破损点、拐点和三通处存在的问题,对防腐层检测提出了改进建议。检测前应首先找出被检测管道上影响防腐层检测的各种因素,并确定他们的具体位置,然后合理布置检测点位。
The most often used methods to inspect anticorrosion layer of buried pipeline are the current gradient method and the potential gradient method. Although under theoretical conditions theses methods can offer very exact inspection data and assessment results,in practical inspections they often give discrepancy between inspection results and actual status. In combination with a practical project,this paper analyses existing problems in inspecting overground pipeline section,outcropped pipeline section,damaged points of anticorrosion layer,bends and tee joints by current gradient method,and brings forward improving proposals,that are to find factors affecting anticorrosion layer inspection and determine their locations, hen arrange reasonably inspecting points on the inspected pipeline.2008,1(1): 36-39 收稿日期：2007-6-14分类号：TE988.2作者简介：王遂平(1982-),男,湖北浠水人,助理工程师,2004年毕业于山东建筑工程学院,从事管道腐蚀检测工作.参考文献：
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