可变径管道检测器皮碗结构设计及密封性能

可变径油气管道检测器是一种可以同时对一个发、收球站间距内的不同口径管道进行在役检测的管道检测设备,其优点是通过能力强、适用范围广、经济性好。通过对实现变径检测的可变径皮碗的结构设计及密封性能进行研究,提出一套适用于油气介质的40～48 in(1 in=25.4 mm)可变径皮碗结构。利用有限元仿真分析、可变径管道检测器牵拉、气体密封驱动测试方法,验证了可变径皮碗结构方案的合理性和可行性。通过现场工业应用,证明可变径皮碗结构设计及密封性能均满足设计指标和现场应用要求。打破了国外长期对可变径清管与检测技术的垄断,为中国自主研发可变径清管及检测装备早日实现系列化工业现场应用奠定了坚实的技术基础。(图7,表2,参20)

Structural design and sealing performance of cup in diameter-variable pipeline detector

The diameter-variable oil and gas pipeline detector is a kind of pipeline detection device that can simultaneously conduct in-service detection on pipelines with different diameters within the interval of a pig launching and receiving station.The advantages lie in its strong passing capacity,wide application and cost saving.Through the research on the structural design and sealing performance of the diameter-variable cup for diameter-variable detection,a set of 40-48 in(1 in=25.4 cm)diameter-variable cup structures suitable for oil and gas media were proposed.The rationality and feasibility of the structural scheme of the diameter-variable cup structure were verified by finite element simulation analysis,combined with the methods of diameter-variable pipeline detector traction and gas sealing driving test.The actual industrial application on site shows that the structural design and sealing performance of the diameter-variable cup meet the design index and the field’s application requirements.The research has laid a solid technical foundation,for breaking the long-term monopoly of foreign countries on diameter-variable pigging and detection technology,and for the early realization of serialized industrial field application of selfdeveloped diameter-variable pigging and detection device in China.