摘要
讨论不同折线关闭规律对蜗壳最大动水压力的影响,揭示了蜗壳最大动水压力的大小与导叶初始开度间的某些规律,指明流量梯度变化最大的工作点恰好是发生蜗壳最大动水压力的极值点这一过渡过程本质。
Based on the well-known knowledge about the influence of wicket gate linear closure law on the maximum dynamic pressure in the spiral case during transient process at hydropower station, the effect of different sectionalized linear closure laws of water turbine guide vane on dynamic pressure of spiral case has been discussed with numerical calculation. Some laws between the magnitude of dynamic pressure of spiral case and the initial wicket gate opening are obtained.The follwing phenomenon is disclosed, such as the peak hydrodynamic pressure in spiral case occurs at the moment when discharge changes the most.
出处
《水电能源科学》
2005年第4期73-75,共3页
Water Resources and Power
关键词
蜗壳压力
导叶关闭规律
流量特性
过渡过程
pressure in spiral case
wicket gate closure laws
discharge characteristic
transient process
