管道阴保电位偏负原因研究分析  

Research and Analysis on the Causes of Negative Cathodic Protection Potential in Pipelines

作　　者：王永胜 WANG Yong-sheng(Project Implementation Department of Shanghai Daodun Technology Co.,Ltd.Shanghai 200120,China)

机构地区：[1]上海道盾科技股份有限公司项目实施部,上海200120

出　　处：《全面腐蚀控制》2024年第11期130-134,共5页Total Corrosion Control

摘　　要：南京某原油管道复线部分管段在恒电位无输出的情况下仍出现长距离过保护现象。我们从该复线恒电位仪输出、排流系统装置、伴行管道线与管道复线过保率及地铁散杂电流四个方面分别分析了管道阴保偏负原因,并进一步综合分析了各因素影响大小,为后面进一步装置优化,降低管道腐蚀风险奠定基础。In the case of no output of potentiostat,some sections of a compound line of crude oil pipeline in Nanjing still appear long-distance over protection.We analyzed the causes of negative pipeline cathodic protection from four aspects:output of potentiostat,drainage system device,pipeline line and pipeline compound line over protection rate and subway scattered current,and further comprehensively analyzed the influence of each factor,which laid a foundation for further device optimization and reducing pipeline corrosion risk.

关 键 词：石油管道 电位偏负 阴极保护 管道腐蚀 杂散电流 

分 类 号：TE983[石油与天然气工程—石油机械设备]