阴极保护对“管中管”管线的局限性
Limitation of Cathode Protection to Pipeline of Pipe-in-Pipe Type
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- DOI:
- 作者:
- 韩钟琴, 刘志刚, 王育青
Han Zhongqin, Liu Zhigang, Wang Yuqing ?
- 作者单位:
- 中油气管道科学研究院
- 关键词:
- 泡沫夹克管;管道腐蚀;阴极保护;性能试验;作用;评论
- 摘要:
- 阴极保护对“管中管”管线起不到完全保护作用,这是由“管中管”防腐保温材料的性质及其结构上的特殊性所决定的。解决“管中管”防腐问题的关键是保证补口质量,只要补口不漏水,“管中管”结构的管线可以考虑不加阴极保护。
The method of cathode protection can not totally protect the pipeline if pipe-in-pipe typcbecause it is limited by the performance of anti-corrosion and insulation materials and their structural characteristics of pipeline of pipe-in-pipe type.The key point of anti-corrosion for this type of pipeline is to ensure the quality of pipe patching coating.It is considered that the cathode protecting may mot be necessary for this type of pipeline as long as there is no water leakage in the patching area.1992,6(6): 22-25 收稿日期：1991-12-16参考文献：
1 常守文等。埋地涂层金属管道电位测量中的IR降影响及消除。油气储运。1989. (6): 38～42
2 A.C.TONCRE.Cathudic Protection in Crevices Under Disbanded Coatings,1980,67:39～43