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铁球放水设备,1954年首先由云南大理专区群众创造使用,目前已普遍在云南各地水利工程中使用。铁球放水设备的优点是技术简单(铁球土师傅可以铸造),操作方便(不需要放水塔,可在岸上操作),造价低廉(一个20多公分直径的铁球,工料费只75元左右)。它的缺点是:不能控制流量的大小,铁球铸得不圆容易漏水(如铁球作得好,重量够,橡皮垫做得好,可完全不漏水)。因此,这种放水设备适用于不需要建启闭台或基础不宜修启闭结构的中小型水库
Iron ball water drainage equipment, first created by the masses in Yunnan Dali Prefecture in 1954, is now commonly used in water conservancy projects in Yunnan. The advantage of iron ball watering equipment is simple technology (iron ball earth master can be cast), easy to operate (do not need to put the tower, can be operated onshore), low cost (a more than 20 cm diameter iron ball, the fee is only about 75 yuan ). Its disadvantage is: can not control the size of the flow, the iron ball casting is not round easy to leak (such as the iron ball made well, enough weight, rubber mat well, can be completely watertight). Therefore, this type of water discharge equipment is suitable for small and medium-sized reservoirs that do not need to be built or closed