分流式调压室分流比计算方法

以佛子岭抽水蓄能电站的尾水调压室为例,通过二维水流数学模型计算和水工模型试验得到尾水系统河道典型断面以及调压室的水位流量关系;利用图解迭代方法,对分流式调压室的分流比进行了计算,得出了调压室分流比与佛子岭水库坝前水位的关系,并分析了总流量及坝前水位对分流比的影响;指出了发电和抽水工况调压室分流比的差异.该方法对于用单一方法难以完成的工程水力学问题,具有很好的应用价值.

Calculation method for diversion rate of distributary surge tank

With the tailrace surge tank at Fuziling pumped-storage power station taken as an example,the relationships between water level and flow rate of typical river cross section of tailrace system and surge tank were obtained by means of 2-D fluid mathematical model and hydraulic model experiment.The diversion rate of surge tank was calculated with the method of graphic iteration,and the relationship between the diversion rate of surge tank and the upstream water level of the dam of Fuziling Reservoir was obtained.Moreover,the influences of total flow rate and the upstream water level of the dam on diversion rate were analyzed,and the difference between diversion rates under working conditions of power generation and water pumping was pointed out.The method can be applied to dealing with hydraulic problems in practical projects which are difficult to be solved by a single method.