摘要
对采用阴极保护和沥青防腐层联合防护的管道防腐层质量进行了调查分析。外界因素是影响防腐层质量的主要原因,主要包括土壤理化性质、环境温度及电流干扰(恒电位仪运行参数和杂散电流)等。通过研究分析得出:管道周围含水量大的地方防腐层质量优于干燥之处;管道周围环境温度增高将加速防腐层老化,因此,出站段防腐层的老化比进站段严重;管道与电力线交叉时,由于感应二次电压而使管道防腐层老化。
The article makes investigation and analyzes the quality of pipeline coating with asphalt in combination with cathodic protection. Major reason affecting pipeline coating's quality comes from external factor, mainly including soil's physical and chemical properties, ambient temperature and current interruption (potentiostat operation coefficient and stray current) etc. . It Is given through study and analysis that the quality of the coating in more water content area along the pipeline is superior over that of less water content and increasing ambient temperature around the pipeline will accelerate aging of coating, therefore the coating at outgoing section will be serious aged than that of incoming section. When intersected with electric line, the coating of the pipeline will be aging due to secondary voltage inducted.
出处
《油气储运》
EI
CAS
北大核心
1998年第4期32-35,共4页
Oil & Gas Storage and Transportation
关键词
埋地管道
防腐层
沥青涂层
输油管道
buried pipeline, corrosion protection, asphalt, coating, quality, analysis
