新型重锤关机与分段关闭装置的研制及应用

针对贯流式机组的结构特点及其过渡过程的特殊性，以插装阀为主要部件,研制了新型重锤关机与分段关闭装置，其导叶第一段关闭时间为2.81 s，第二段关闭时间为8 s时，拐点在全行程27%处；甩100%负荷时最大速率上升值为48.3%(过速限制保护整定值为160%)。该装置以其优良的动态特性和极高的可靠性被广泛用于贯流式机组的控制与调节。

Development and application for new weight-loaded closedown and section closing equipment

According to the structural character of tubular turbine and peculiarity of its transition process, a new weight-loaded closedown and section closing equipment is developed with inserted valves as its main parts. The wickets of the equipment take 2.81 s as the first section closing time, 8 s as the second section closing time, then its inflection point locates at 27% of the whole course. When the turbine unloading 100% , the maximam speed rise rate is 48.3% , much less than the overdriving-protection limit 160% . Owing to its excellent dynamic behavoir and high reliability, the equipment has been widely used in control and regulation of tubular units.