石楼—燕化管道镁牺牲阳极保护失效原因调查  

Investigation on Failure of Magnesium Anode Protection in Shi Lou-Yan Hua Pipeline

作　　者：张俊义[1] 刘志刚[1] 张永盛 

机构地区：[1]中国石油天然气管道局运销处,河北省廊坊市065000

出　　处：《石油工程建设》1998年第1期39-41,共3页Petroleum Engineering Construction

摘　　要：通过对石楼—燕山输油管道镁牺牲阳极阴极保护系统的现场调查与室内试样分析，发现镁牺牲阳极失效的主要原因是阳极表面生成的一层不脱落、不导电产物屏蔽了阳极输出电流所致，指出了镁牺牲阳极用于长输油气管道阴极保护体系存在的不足，据此进一步对镁牺牲阳极现阶段的应用提出了一些看法。Through site investigation and lab analysis on sample the main causes of failue of magnesium anode protection is that a non-shedding and non-conducting layer is formmed and shields the anode electric current. This article presents disadvantages of the magnesium anode protection applicated in cathode protection for long distance oil & gas pipeline and proposes some improvement issues for application of the magnesium anode protection.

关 键 词：输油管道 镁牺牲阳极保护 失效 防腐 

分 类 号：TE985[石油与天然气工程—石油机械设备]