摘要
管—地电位的测量是评价埋地涂层金属管道阴极保护状况的最常用方法。但用常规方法测得的管—地电位中总含有一定的IR降,根据这些数据难于准确判断管道的阴极保护状况。管—地电位测量中的IR降必须设法加以消除。本文用电化学等效电路分析了IR降的产生及其影响,阐述了消除IR降的瞬时断电法和探头法的原理与局限,推荐用阴极保护多功能测量探头消除管—地电位测量中的IR降。
The measurement of pipeline to ground potential is the most common method to evaluate protection condition of buried and coated metal pipelines,the common method to measure pipeline to ground potential always covers an IR drop, it is hard to judge the cathodic protection condition of pipeline according to the data obtained. The IR drop in measurement of pipeline-ground potential must be eliminated. An equivalent circuit is taken in the paper to analyze the production of IR drop and the effect, to eliminate IR drop the principle of the transient power loss method and probe method and application limits are presented, the multifunction probe for cathodic protection is recommended.
出处
《油气储运》
CAS
北大核心
1989年第3期38-42,共5页
Oil & Gas Storage and Transportation
