摘要
绝缘接头作为阴极保护系统的关键组件,其安全性与可靠性的研究在不断深入。由于集输系统高温、高压的特点,绝缘接头必然承受由于内压和热胀等导致的弯矩,加之其结构特点,可能会引起泄漏。为此,有必要综合考虑工况条件,研究绝缘接头可承受的安全弯矩值,并形成基于强度的评价方法。根据规范要求,结合管道强度理论,推导了绝缘接头承受弯矩范围的计算公式,提出了对应的绝缘接头强度校核与设计弯矩值选取方法;研究成果为绝缘接头安全设计与强度校核提供了参考与借鉴。
Insulation joint is the key component in cathodic protection system,and its reliability and safety development goes deeper.Due to the high temperature and high pressure in gas gathering system,the insulation joint will bear the bend moment arising from the internal pressure and thermal expansion,and the joint is likely to leak because of its structural feature.Hence,it is necessary to study the allowable tolerable bending moment of the insulation joint with working conditions taken into account,and then form a strength evaluation method.In the paper,based on the code requirement,the allowable tolerable bending moment equation of the insulation joint is derived with the pipeline strength theory,and then the method for strength checking of insulation joint and the method for design bending moment selection are presented.The study result in this paper will provide reference for safe engineering and strength check of insulation joint.
出处
《天然气与石油》
2016年第4期17-21,6-7,共5页
Natural Gas and Oil
基金
中国石油天然气集团公司重点工程资助项目(Z 2011-15)
关键词
绝缘接头
集输系统
强度校核
设计弯矩
Insulation joint
Gas gathering system
Strength check
Design bending moment
