湖北省白莲河四级电站已装的两台机组配套的水轮机型号是ZZ600-LH-330,其转轮叶片密封采用如图所示单层“入”型橡皮止漏装置,内靠弹簧弹力通过垫环顶紧,外靠四块压环压紧“入”型橡皮圈而起防止轮壳内外油水互相渗漏的作用。照说,这种结构型式的密封装置止漏性能是比较可靠的,但在渗漏试验中叶片止漏装置普遍出现漏油,现就此问题叙述如下: Hubei Bailianhe four hydropower station has installed two units supporting the turbine model is ZZ600-LH-330, the rotor blade seal as shown with a single layer of “into” rubber leakage device, by the spring elastic through Pad ring top tight, outside by four pressure ring compression “into” rubber ring and prevent the wheel shell oil leakage inside and outside each other’s role. According to say, this structural type of sealing device leak performance is more reliable, but in the leak test leakage device generally leaks leaves, the problem is now described as follows: