水轮机的汽蚀不论其危害性大小,它客观地普遍性地存在着;并成为水轮机设计制造及水电站设计、机组安装与运行中必须考虑的重要因素之一.据有关文献资料中介绍:水轮机的常规汽蚀部位主要在水机导叶、转轮叶片、尾水简(室)等过流部件上。关于水轮机顶盖的汽蚀在我县水轮机中则较普遍的存在,且汽蚀破坏强度较上述常规汽蚀 Regardless of its harmfulness, the cavitation of a turbine exists objectively universally and becomes one of the important factors that must be considered in the design and manufacture of a hydro-turbine and the design and installation of a hydropower station. According to the literature Conventional cavitation site mainly in the water vanes, runner blades, tail water Jane (room) and other over-current components. The cavitation on turbine roof is more common in our county turbine, and the cavitation damage intensity than the conventional cavitation