轨道球阀结构特点与密封性能研究

西气东输场站计量撬大量使用进口ORBIT轨道球阀.针对轨道球阀出现较多的密封失效问题,分析轨道球阀的工作原理、结构特点,以及常温工况轨道球阀的密封阀座特点和内漏检测方法.结合生产运行经验指出内漏的危害,研究关阀不到位、阀门安装方向错误、固体杂质聚集耳轴套、球体密封面冲蚀、密封面垫粘杂质或阀座密封环损伤以及阀门组件运行磨...

Research on the Structural Characteristics and Sealing Performance of Orbit Ball Valve

A large number of imported ORBIT orbit ball valves are used in the metering skids of the west-to-east gas pipeline station.In view of the frequent sealing failures of the orbit ball valve,the working principle and structural characteristics of the orbit ball valve,as well as the characteristics of the sealing seat and the internal leakage detection method of the orbital ball valve under normal temperature were analyzed.The hazards of internal leakage were pointed out based on production and operation experience,and the improper closing of the valve,the wrong installation direction of the valve,the accumulation of solid impurities on the trunnion sleeve,the erosion of the spherical sealing surface,the adhesion of impurities on the sealing surface or the damage of the valve seat sealing ring were studied.In view of the factors affecting the sealing performance of the orbital ball valve,the solutions were proposed respectively,and the improved localization design of orbit ball valve was put forward.