Design and Optimization of Pump Turbine Runner Based on Axial Flow Pump Transformation
In order to explore the hydraulic performance of the axial flow pump turbine based on the transformation of axial flow pump,the axial flow pump turbine was designed and calculated numerically based on the flow channel of the pump.The blade inlet setting angle,outlet setting angle,blade thickness and blade number were selected as factors,and the orthogonal design was analyzed by using L9(34)orthogonal table.The results show that the number of blades has the greatest influence on the performance of the axial flow pump turbine,and the efficiency of the optimized pump working condition is increased by 1.45%and that of the turbine working condition is increased by 1.74%.The optimized pressure distribution on the back of the working face under the condition of pump and turbine is uniform and the flow pattern is good.The work effect of the blade under pump condition is good,the flow line of the flow channel under turbine condi-tion is obviously improved,and the optimization effect is good.The designed pump turbine has a working flow of 315-350 L/s and a head range of 8.01-9.42 m under pump conditions.The working flow of the turbine is 368-403 L/s,and the water head ranges from 6.8 m to 10.72 m.The research results can provide theoretical support and performance refer-ence for pump station axial flow pump reconstruction pumped storage.
万方数据
维普
