泡沫夹克防腐蚀保温层的材料选择与结构设计
Foam Jacket Anticorrosion and Thermal Insulation Structure
摘 要
介绍了泡沫夹克防腐保温结构输油管道的现状,对其腐蚀失效的原因进行了分析.钢管在无防腐层的情况下直接包覆泡沫保温结构,补口失效、夹克层破损和保温层进水是造成管体腐蚀的主要原因.对常用的防腐层、保温层和外防护层材料的性能和特点进行了比较,探讨了环氧粉末(煤焦油磁漆)防腐层-聚氨酯泡沫保温层-煤焦油磁漆防护层的新型防腐保温结构,并对其施工中的有关问题进行了讨论.
保温层
煤焦油磁漆
熔结环氧
anticorrosion
thermal insulation
coal tar enamel
fusion-bonded epoxy
Abstract
The status and corrosion reason of foam jacket anticorrosion and thermal insulation structure used in oil pipelines are introduced.For bare steel pipes wrapped by polyurethane(PU) foam thermal insulation without anticorrosive coating,failure in coating joint,cleft and disfigurement of polyethylene(PE) layer and water penetration into the thermal insulation layer are main reasons that cause the pipe corrosion.The characteristics of common materials used for anticorrosive coating,thermal insulation and outer shield are compared.A new 3-layer anticorrosion and thermal insulation structure composed by fusion bonded epoxy(FBE) (coal tar enamel),PU foam thermal insulation and coal tar enamel is discussed and some issues related to applying this new structure are also discussed.
中图分类号 U177.3
所属栏目 专论
基金项目
收稿日期 2007/3/21
修改稿日期 2007/4/28
网络出版日期
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引用该论文: LI Jie,LIN Rong-fang,CHANG Ya-ping. Foam Jacket Anticorrosion and Thermal Insulation Structure[J]. Corrosion & Protection, 2008, 29(2): 80～83
被引情况:
【1】张文艳,李柯,侯胜,熊娟,周建, "埋地保温管线外加电流阴极保护适应性",腐蚀与防护 35, 947-950(2014)
【2】王新华,王通,何仁洋,孟涛, "埋地管道硬质聚氨酯泡沫防腐保温层失效模式及其故障树分析",腐蚀与防护 30, 660-664(2009)
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参考文献
【1】夏炜东,赵正友.煤焦油磁漆及其在现代环境下的应用[J].油气储运,2001,20(10):24-27.
【2】米淇,李庆林.管道防腐蚀手册[M].北京:中国建筑出版社,1992.
【2】米淇,李庆林.管道防腐蚀手册[M].北京:中国建筑出版社,1992.
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