水电站大口径进水蝴蝶阀结构形式的探讨  

Study on the Structure of Heavy Caliber Inlet Butterfly Valves

作　　者：赵阳[1] 邓志勇[1] 

机构地区：[1]西北勘测设计研究院,西安710065

出　　处：《电网与清洁能源》2010年第3期81-85,共5页Power System and Clean Energy

摘　　要：进水阀的启闭多采用液压操作机构,主要型式有蓄能罐式、锁定型自动保压重锤式(以下简称重锤式)等。蝶阀上游侧设连接短管与压力钢管焊接,进水阀的下游侧设置伸缩节,伸缩节与下游短管法兰连接,下游短管与水轮机蜗壳延伸段焊接。蝶阀阀体密封可采用单密封或双密封形式,分别可采用金属硬密封、橡胶密封。为节省空间和平衡扭矩,也可采用双重锤对称布置结构。The normal close-open device for inlet valves adopts hydraulic operating mechanism,which consists of energy storage tanked,locked automatic pinched weight-loaded,and so on.The upstream side of butterfly valves is installed with welded joint of upstream connecting pipe and penstock.The downstream side is installed with expansion joint,which is flanged connected with downstream nozzle stub.The connection between downstream nozzle stub and the extension part of the spiral case is also welded.The sealing ring o...

关 键 词：水电站 进水蝴蝶阀 蓄能式 重锤式 

分 类 号：TV732.7[水利工程—水利水电工程]