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介绍了强制密封球阀的性能和使用工况,分析了2种强制密封球阀阀杆导向结构存在的缺陷,提出了阀杆导向结构优化设计及采用黄铜套减磨降低开关力矩的方法,解决了阀杆易产生应力集中、易磨损、易断裂和难加工等问题。
The performance and working condition of forced seal ball valve were introduced. The defects of two kinds of forced seal ball valve stem guide structure were analyzed. The optimal design of the valve rod guide structure and the method of reducing the switching torque by using brass bush were proposed. Stem prone to stress concentration, easy to wear, easy to fracture and difficult to process and so on.