在役埋地管道3PE防腐层补口与补伤选材
Selection of 3PE Field Joint Coatings and Mending Coatings of Buried Pipelines in Service
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- 引用格式:
-
李俊中.在役埋地管道3PE防腐层补口与补伤选材[J].天然气与石油,2014,32(2):0.doi:
Li Junzhong.Selection of 3PE Field Joint Coatings and Mending Coatings of Buried Pipelines in Service[J].Natural Gas and Oil,2014,32(2):0.doi:
- DOI:
- 作者:
- 李俊中
Li Junzhong
- 作者单位:
- 中海福建天然气有限责任公司
CNOOC Fujian LNG Co., Ltd.
- 关键词:
- 补口材料；补伤材料；3PE防腐层；埋地管道
Field joint coating; Mending coating; 3PE coating; Buried pipeline
- 摘要:
为提高在役埋地管道3PE防腐层补口、补伤的质量，减少管道腐蚀穿孔的危险，选择合适的补口、补伤材料非常重要。分析了补口、补伤施工的难点，结合补口、补伤施工选材的基本原则，对国内外常用及最新的防腐补口及补伤的材料性能、应用情况进行了讨论，得出：丁基橡胶压敏胶为自黏胶层的聚丙烯冷缠胶带与黏弹体胶带+外保护带复合体系是目前较好的在役埋地管道3PE防腐层补口、补伤材料，该体系具有附着力强、机械强度高、施工方便、受施工过程影响小、防腐性能好等优点。
In order to improve quality of 3PE field joint coatings and mending coatings in buried pipelines in service and reduce the risk of pipeline corrosion perforation, it is very important to select appropriate field joint coatings and mending coatings. Through analysis and discussion on performance and application situation of commonly used and updated field joint coatings and mending coatings at home and abroad, combined with basic principle of field joint and mending operation of buried pipelines in service with 3PE coating, it is concluded that polypropylene tape with self-adhesive layer of butyl rubber pressure sensitive adhesive and compound system of viscoelastic body + protective belt are the preferred materials used for field joint and mending of buried pipeline in service with 3PE coating. The system has such advantages as strong adhesion, high mechanical strength, convenient operation and good anti-corrosion performance.
