焊管Issue(3)：23-27,5.
内衬双金属复合管紧密度测量及影响因素
Tightness Measurement and Influencing Factors of Bimetal Composite Pipe with Lining
谢勇 1曹胜 2杨专钊 1吴金辉1
作者信息
- 1. 中国石油集团石油管工程技术研究院，西安 710077
- 2. 中石化股份公司管道储运分公司，江苏 徐州 221008
- 折叠
摘要
Abstract
In this article, it mainly introduced forming process and the main forming methods for bimetal composite pipe with lining, and analyzed stress state of the inner pipe and outer pipe after hydroforming. On the basis of deformation compatibility condition,the positive correlation relation obtained between the residual contact pressure and the residual contact stress of the inner pipe and outer pipe. According to the principle of sliding friction, the new tightness calculation method by measuring force pushing out the liner pipe was proposed. This can replace the tightness test method recommended in API 5LD Specification. Finally, the influence factors to tightness were analyzed, such as hydraulic pressure, the subsequent coating temperature and field test pressure.关键词
双金属复合管/紧密度/残余接触压力/残余接触应力Key words
bimetal composite pipe/tightness/residual contact pressure/residual contact stress分类
能源科技引用本文复制引用
谢勇,曹胜,杨专钊,吴金辉..内衬双金属复合管紧密度测量及影响因素[J].焊管,2014,(3):23-27,5.
