天然气管道腐蚀控制措施研究
Research on Corrosion Control Measures for Natural Gas Pipelines
贾正东1
作者信息
- 1. 山西燃气产业集团有限公司管道分公司,山西 太原 030000
- 折叠
摘要
为保证天然气长输管道的正常运行,降低管道腐蚀风险,提出采用防腐涂层和阴极保护相结合的管道腐蚀控制措施.当采取镁合金牺牲阳极保护后,对管道的有效保护距离约为 3 km,极化效果好;当对管道采取外加电流和牺牲阳极联合保护,同时将两端防腐站的电流降低,电位分布更均匀,且阴极保护效率由 42%提高到 100%.经应用表明该联合控制措施的管道阴极保护效果好.
Abstract
In order to ensure the normal operation of natural gas long-distance pipelines and reduce the risk of pipeline corrosion,a pipeline corrosion control measure combining anti-corrosion coatings and cathodic protection is proposed.When magnesium alloy sacrificial anode protection is adopted,the effective protection distance of the pipeline is about 3 km,and the polarization effect is good.When external current and sacrificial anode are combined to protect the pipeline,and the current at both ends of the anti-corrosion station is reduced,the potential distribution is more uniform,and the cathodic protection efficiency is increased from 42%to 100%.The application shows that the joint control measure has a good cathodic protection effect on pipelines.
关键词
天然气长输管道/防腐涂层/阴极保护/牺牲阳极Key words
natural gas long-distance pipeline/anti-corrosion coating/cathodic protection/sacrificial anode引用本文复制引用
出版年
2024
NETL
NSTL
万方数据