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筒形阀是水轮机进水阀门的一种新的结构型式,适宜安装在多泥沙河流的单管引水式电站。在成本较低的情况下,为机组提供良好的封水性能和充分的安全保护,正常工况时,阀门在导叶开启之前开启,导叶关闭之后关闭,飞逸状态下或调速器失灵时阀门紧急关闭,起事故阀门的作用;机组长期停机关闭筒阀,可保护导水机构免遭泥沙和汽蚀磨损,此外,筒型阀不象蝴蝶阀,它不会引起总的效率损失。筒形阀这种技术在国际上也只有几个发达国家作为专利掌
Cylinder valve is a new type of turbine inlet valve structure, suitable for installation in the multi-channel river diversion single-tube power station. At low cost, providing good seal performance and adequate safety for the unit. In normal operation, the valve opens before the guide vane is opened, closes after the guide vane is closed, fails to open or the governor malfunctions When the valve is shut down in an emergency, the valve acts as an accident. The unit shut down the cylinder valve for a long time to protect the guide mechanism from sediment and cavitation erosion. In addition, the cylinder valve is not like a butterfly valve and does not cause total loss of efficiency . Cylinder valve This technology in the world only a few developed countries as a patent palm