3) auto lock safety joint
自封安全管接头
4) oil connection fitting
油管接头安装
5) safety joint
安全接头
1.
Development and application of hydraulic controlled safety joint;
液控型安全接头的研制和应用
2.
Based on groping for and summarization of the processing method drilling failure,and according to the characteristic of drill pipe sticking,this paper proposed a new design for drilling safety joint,which can commendably deal with drill pipe sticking accidents.
在对钻井事故处理不断探索和总结的基础上,根据卡钻特点,提出了一种能很好地处理井下卡钻事故的新型随钻安全接头的设计方案,并对中轴的2种承载模型(上下滑键不对称和对称模型)进行了应力、塑性应变和变形分布分析。
6) head end line relief valve
油缸头部油管安全阀
补充资料：自封
自己给自己加以某种称号：真正的英雄决不是靠自封获得的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条