新大管道杂散电流干扰影响研究  

Study and Analysis on the Interference of Stray Current of Xingang to Dalian Oil Pipeline

作　　者：吴长访[1] 姚喆[2] 刘玲莉[1] 王洪涛[1] 陈敬和 朱子东 仲松伟[4] 刘圭群[4] 公禾 

机构地区：[1]中国石油管道公司科技中心 [2]中国石油管道公司 [3]沈阳工程技术分公司 [4]中国石油管道公司大连输油分公司 [5]中国石油天然气与管道分公司

出　　处：《油气储运》2007年第6期41-44,共4页Oil & Gas Storage and Transportation

摘　　要：针对新大管道受到来自轻轨铁路及交流高压线路等杂散电流的干扰可能导致的腐蚀穿孔问题,进行了研究分析,并对其主要干扰源相关数据进行了测试分析,采取了有针对性的排流防护措施。实践表明,管道保护电位达到正常值,直流排流保护效果满足相关标准要求。This paper describes the stray current corrosion problem in Xingang to Dalian Oil Pipeline. The relative data of this pipeline is as follows: 21. 6 km in total length, 711 × 7. 1 mm in specification, L360 pipe steel,with 4.51 MPa of design pressure. According to the statistic data for this oil pipeline, there are 18 highway crossings, 6 railway crossings (4 crossings of light rail in them), one river crossing and one shallows crossing,and even more,more than 9 km pipeline section parallel to the Dalian Light Rail railway as well as 4 crossing over it along the whole pipeline. Meanwhile, this pipeline is parallel to or crossing over high voltage power mains. In this case, to avoid the possible corrosion induced by the stray current, the experiment and analysis on the main interference sources are made to take effective countermeasures in drainage protection. The drainage protection result shows that the protective potential is in the required scope and DC drainage protection is in line with relative standards.

关 键 词：埋地管道 干扰腐蚀 直流杂散电流 交流杂散电流 分析 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]