摘要
在某小区频繁发生泄漏的低压燃气管道上开展了详细的现场测试,明确了泄漏原因为该燃气管道和建筑物接地地网存在电连接,出现电偶腐蚀,造成管道管地电位正向偏移,有稳定的电流从管道上流出,加速管道腐蚀。根据腐蚀的原因,提出了防护建议。
Detailed field tests and experiments on a high-frequent leaking low-pressure gas pipe in a residential area were carried out.It was that the leakage was due to the electrical connection between the gas pipe and the building grounding grid,resulting in galvanic corrosion between buried gas pipe and grounding grid.Buried pipe acted as anode with a stable current flowing out from it and corrosion rate increased.According to the cause of the corrosion,Some protection suggestions were proposed.
作者
孙健民
田念佩
杜艳霞
SUN Jianmin;TIAN Nianpei;DU Yanxia(Beijing Gas Group Co.,Ltd.,Beijing 100035,China;Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China)
出处
《腐蚀与防护》
CAS
北大核心
2022年第2期74-78,共5页
Corrosion & Protection
基金
北京燃气集团企业项目。
关键词
低压燃气管道
泄漏原因
现场试验
电连接
电偶腐蚀
low pressure gas pipe
leakage reason
field test
electrical connection
galvanic corrosion
