Effect of the Damage Area of Coating on IR Drop of Cathodic Protection for Oil and Gas Pipeline
摘 要
采用试片断电法,通过室内模拟试验研究了绝缘防腐蚀层缺陷对阴极保护IR降的影响规律。结果表明:管线施加阴极保护管/地电位时,IR降随着恒电位仪输出电位的增加而增大;在相同的管/地电位下,IR降会随着绝缘防腐蚀层破损面积的增大而增大,缺陷大小和阴极保护度呈负相关性。
Abstract
Breakpoint test and indoor simulated experiment were used to investiguate the effect of damaged area of coating on IR drop of cathodic protection. The results showed that IR drop increased when potentiostat output voltage increased for the pipeline with cathodic protection. Meanwhile, in the same voltage, IR drop increased when the damage area increased, and defect size and cathodic protection efficiency was negatively correlated.
中图分类号 TG174 DOI 10.11973/fsyfh-201609014
所属栏目 应用技术
基金项目 陕西省重点学科专项(ys37020203); 西安石油大学优秀硕士学位论文培育项目(2015yp140512)
收稿日期 2015/11/13
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备注周 勇(1963-),教授,博士,主要从事石油工程材料表面工程技术研究。
引用该论文: ZHOU Yong,WANG Nan,GUO Zi-xin,WEI Ke-ying,ZHANG Shi-hu. Effect of the Damage Area of Coating on IR Drop of Cathodic Protection for Oil and Gas Pipeline[J]. Corrosion & Protection, 2016, 37(9): 753
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参考文献
【1】NACE Standard RP-01-69 Recommended practice,control of external corrosion on underground of submerged metallic piping systems[S].
【2】GB/T 21448-2008 埋地钢质管道阴极保护技术规范[S].
【3】PEABOY A W. Control of pipeline corrosion[M]. Houston:NACE,1967.
【4】BENEDIC L. Classic papers and reviews on anode resistance fundamentals and applications[M]. Houston:NACE,1986.
【5】李彬. 阴极保护下埋地管道涂层及腐蚀与防护态势评价方法研究[D]. 成都:西南石油大学,2004.
【2】GB/T 21448-2008 埋地钢质管道阴极保护技术规范[S].
【3】PEABOY A W. Control of pipeline corrosion[M]. Houston:NACE,1967.
【4】BENEDIC L. Classic papers and reviews on anode resistance fundamentals and applications[M]. Houston:NACE,1986.
【5】李彬. 阴极保护下埋地管道涂层及腐蚀与防护态势评价方法研究[D]. 成都:西南石油大学,2004.
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