抽水蓄能电站岔管导流板体型研究

岔管体型对抽水蓄能电站水头损失影响较大,间接影响到电站的运行效益,岔管体型优化是当前研究的一个热点问题.为减小岔管的水头损失,本文在传统岔管设计基础上,提出一种新的岔管导流板设计方法.采用突缩管验证了数值模拟的准确性,通过数值模拟比较了有无导流板的岔管的流速分布,对岔管导流板的体型进行了优化.结果表明:岔管导流板能够减...

Study on body shapes of bifurcated pipe guide plate forpumped-storage power stations

The shape of the bifurcated pipe has a great impact on the head loss of a pumped-storage power station,and affects its operating benefits indirectly;optimizing the shape is a research hotspot.To reduce head loss,this paper develops a new design method of the guide plate to improve the traditional bifurcated pipe and verifies its accuracy of numerical simulations of the flows in an abrupt contraction pipe.We also compare its velocity distributions with those in the flow without this plate through numerical simulations and optimize its shape.The result shows the guide plate reduces the head loss in the bifurcated pipe section and helps stabilize flow patterns.The reduction is 43.4%and 12.6%in pumping mode and power generation mode respectively,showing a significant improvement on the power plant benefit by the optimized guide plate.