一种消除闸前立轴漩涡的横向消涡栅的水力特性研究

Study on Hydraulic Characteristics of a Horizontal Eddy-elimination Barries Eliminating Vertical Vortex in Front of Sluice Gate

在金沙江CB水电站水工模型试验中,泄洪闸前出现了偶发的贯穿性漩涡,为了消除该漩涡,对已有的一种垂向消涡栅进行了改进,并提出了一种新的横向消涡栅,试验测量了该型消涡栅的闸前流场、漩涡尺度、漩涡产生频率等参数,并分析了其消涡效果。结果表明,本文所提出的横向消涡栅相较以往的垂向消涡栅有更好的消涡效果,是一种成本低廉、高效的泄洪闸消涡设施。

In the hydraulic model test of the CB hydroelectric station in Jinsha River,occasional penetrating vortexes were observed in front of the sluice gate.In order to eliminate the vortex,this paper improved a vertical eddy-eliminating barries and proposed a new horizontal eddy-eliminating barries.The flow field in front of the sluice gate,vortex scale,and vortex generation frequency of the new horizontal eddy-eliminating barries were measured and analyzed for its vortex elimination effect.The results show that the proposed horizontal eddy-eliminating barries has better vortex elimination effect than the previous vertical eddy-eliminating barries,and it is a low-cost and efficient vortex elimination facility for sluice gate.