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本文主要介绍了高转速水轮机球阀的双密封结构以及由于水推力的作用下，阀体、活门产生变形，为防止由于变形而产生的漏水，因此对阀体、活门的密封结构进行了反变形试验研究，并取得了宝贵的经验，为今后大型水轮机球阀的设计及制造奠定了基础。
This paper mainly introduces the double seal structure of high speed turbine ball valve and deformation of valve body and valve due to water thrust. In order to prevent water leakage caused by deformation, anti-deformation test of valve body and valve sealing structure Research, and has gained valuable experience, laid the foundation for the design and manufacture of large-scale turbine ball valve in the future.