杭州某小区地下燃气管道腐蚀原因检测与分析  

Cause Detection and Analysis on Corrosion of Buried Gas Pipelines

作　　者：赵承 冯其栋 范列朋 ZHAO Cheng;FENG Qi-dong;FAN Lie-peng(Hangzhou Gas Group Co.,Ltd.Hangzhou 310000,China;Hangzhou Natural Gas Co.,Ltd.Hangzhou 310014,China)

机构地区：[1]杭州市燃气集团有限公司,浙江杭州310000 [2]杭州天然气有限公司,浙江杭州310014

出　　处：《全面腐蚀控制》2021年第6期62-67,共6页Total Corrosion Control

摘　　要：为了研究某小区埋地燃气管道腐蚀原因,检测了该段管道通-断电管地电位及土壤电位梯度数据并进行了分析,初步查明了管道腐蚀原因,地铁运行期间与杂散电流具有对应关系,判断该段管道受地铁杂散电流影响,管道处于电流流出区,并据此提出了下步的整改措施,具有一定的借鉴意义。In order to study the reasons for the corrosion of buried gas pipelines in a residential district,the on-off potential and soil potential gradient data were detected and analyzed,and the causes of pipeline corrosion were initially found out.During subway operation,there is a correspondence with stray current It is judged that this section of the pipeline is affected by the stray current of the subway and the pipeline is in the current outflow area.Based on this,the next rectification measures are proposed,which has certain reference significance..

关 键 词：杂散电流 通电电位 断电电位 电位梯度 

分 类 号：TG172.84[金属学及工艺—金属表面处理]