提升式旋塞阀密封结构的分析

摘要

The thesis mainly introduces the structure, characteristics and driving principle of the lift style soft seal and hard seal cock valves as well as the motion principle of their actuators.%介绍了提升式软密封和硬密封旋塞阀的密封结构、特点和动作原理及其驱动机构的运动原理。