本文選題：大型水電站 + 通倉型進水口��； 參考：《水力發(fā)電學報》2017年01期

【摘要】：為研究通倉型進水口水力特性,探討水電站最佳運行方案,結合某實際工程,建立了全三維水動力數(shù)學模型,并同步開展了大比尺物理模型實驗,計算結果與實驗結果進行了相互驗證。對不同運行工況下通倉型進水口流速及水頭損失等開展研究,結果表明:疊梁門頂流速分布受機組運行影響顯著;與常規(guī)分層取水進水口相比,最大過柵流速降幅可達60%以上;分層取水進水口采用通倉型布置,其水頭損失最大降幅達到50%左右。從水力特性出發(fā),采用通倉型進水結構是降低進水口過柵流速,減小水頭損失的有效辦法,同時建議采用對稱原則確定運行方案。
[Abstract]:In order to study the hydraulic characteristics of the water inlet and discuss the optimal operation scheme of the hydropower station, a full three-dimensional hydrodynamic mathematical model was established in combination with a practical project, and a large scale physical model experiment was carried out simultaneously. The calculated results are verified with the experimental results. The velocity and head loss of the silo type inlet under different operating conditions are studied. The results show that the velocity distribution at the top of the laminated gate is significantly affected by the operation of the unit, and the maximum velocity over the gate can be reduced by more than 60% compared with the conventional stratified intake. The delamination intake adopts the silo type arrangement, and its water head loss decreases by about 50%. Based on the hydraulic characteristics, adopting the silo type inlet structure is an effective method to reduce the flow velocity and the head loss at the inlet. At the same time, it is suggested that the operation scheme should be determined by the principle of symmetry.
【作者單位】： 中國水利水電科學研究院流域水循環(huán)模擬及調(diào)控國家重點實驗室;四川大學水力學與山區(qū)河流開發(fā)保護國家重點實驗室;中國長江三峽集團公司;
【基金】：國家自然科學基金(51309256;51409181)
【分類號】：TV135

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