• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Hydrotechnical Construction >ENERGY CHARACTERISTICS OF WATER INTAKES AT HYDROELECTRIC AND PUMPED-STORAGE POWER PLANTS
【24h】

ENERGY CHARACTERISTICS OF WATER INTAKES AT HYDROELECTRIC AND PUMPED-STORAGE POWER PLANTS

机译：水力发电站和抽水蓄能电站取水的能量特征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Study of water-power intakes is one of the basic trends in scientific research conducted by the Chair of Water-Energy Utilization at the Moscow State Civil Engineering University. These studies were initiated in the 1940s under the guidance of Professor F. F. Gubin. It was established that configurations of the ceiling and threshold, which were plotted from equations of the surface of a jet exiting from an opening in a wall, or similar elliptical configurations are most favorable for a constant width of water intake. Subsequent research has indicated that the optimal configuration of the ceiling and threshold of the water intake for a hydroelectric power plant will depend heavily on the ratios of the cross-sectional areas at the inlet and outlet of the head bay m = F_(in)/F_(out), as well as on the existence and degree of compression of this section of the water intake in plan. With a constant width of water intake, i.e., when there is no compression in plan, the optimal elliptical configuration of the ceiling and threshold of a water intake that is symmetric in the vertical plane can be produced only in cases when the height of the inlet section of the water intake is no more than 1.63 times greater than the height of the outlet section of the head bay. When the ratio of these heights is high, an elliptical configuration begins to compress the flow, and the higher the ratio, the more significant the compression of the flow and head loss.
机译：水动力入口的研究是莫斯科国立土木工程大学水能利用主席进行的科学研究的基本趋势之一。这些研究是在1940年代在F. F. Gubin教授的指导下进行的。已经确定的是，从壁上的开口流出的射流的表面方程式绘出的天花板和阈值的构型，或者类似的椭圆形构型对于恒定的取水宽度是最有利的。随后的研究表明，水力发电厂的顶棚和取水阈值的最佳配置将在很大程度上取决于顶舱入口和出口的横截面积之比m = F_（in）/ F_（out），以及在计划中该段取水口的存在和压缩程度。在进水口宽度恒定的情况下，即在平面上没有压缩的情况下，只有在进水口高度高的情况下，才能产生最佳的椭圆形顶棚形状和在垂直平面上对称的进水口阈值进水部分的高度不超过头架出口部分的高度的1.63倍。当这些高度的比率高时，椭圆形配置开始压缩流，并且比率越高，流动的压缩和压头损失就越显着。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号