结论针对深水管道高温高压的工作特点,设计了18 吋金属透镜式密封圈的参数尺寸,并对其进行有限元分析探究工作应力的分布规律,结果验证了结构设计的正确性。通过将密封圈扩展应用得到复合式透镜密封圈,在具备同等条件下标准金属透镜垫密封能力的同时兼顾了外压的密封能,特别适用于水下特殊环境。参考文献[1]MSS SP-65-1994.用透镜垫的高压化工法兰和螺纹短管[S].[2]DIN2696-1999,Lenticular Ring Joint Gaskets for Flanged Joints[S].[3]ASME B16.5-2009,Pipe Flanges and Flanged Fittings NPS 1/2 throughNPS 24 Metric/Inch Standard[S].[4]API 6A-2004,Specification for Wellhead and Christmas Tree Equipment[S].[5]ASME Boiler & Pressure Vessel Code VIII Division 2-2007,Rules forConstruction of Pressure Vessels[S].[6]West Alan,Giles John,Gibson David.Diver less subsea flange connection[J]. Journal of Offshore Technology,1999,7(1): 2-5.[7]A.Kaplan,M.Mizutani, S.Katayama,et al.Analysis of different methods forthe prevention of pore formation in keyhole laser spot welding[J].Welding in the World,2002,46(7):39-50.[8]Hirohiko A,Susumu T.Position control of a manipulator with passive joints using dynamic coupling[J].IEEE Transaction On Robotics and Automation,1991(8).