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在水电站初步設計階段,对水輪机的直徑、轉速及机組数目往往要進行好几个方案的比較,然后根据电站所產生的电能或其平均效率、厂房尺寸、施工特点以及水輪机制造技術等一系列因素來确定其中最合理最經济的方案。目前,对反击式水輪机(如輻軸流式水輪机及轉叶式水輪机),我們可以采用对数运轉綜合特性圖,很方便地对不同輪系或同一輪系不同尺寸的水輪机進行此較选擇;但是,在选擇斗叶式水輪机
In the preliminary design stage of hydropower station, several schemes are often compared to the diameter, speed and unit number of the turbine. Then, according to the power generated by the power station or its average efficiency, plant size, construction characteristics and turbine manufacturing technology A series of factors such as determining the most reasonable and most economical of the program. At present, for counter-driven turbines (such as radial-flow turbines and vane-type turbines), we can use the logarithmic operation of the integrated map, it is easy for different train wheels or the same wheel of different sizes Turbines make this more choice; however, in the choice of bucket-type turbine