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Turbine efficiency test on a large hydraulic turbine unit 被引量:5

Turbine efficiency test on a large hydraulic turbine unit
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摘要 The flow rate measurements are the most difficult part of efficiency tests on prototype hydraulic turbines.Among the numerous flow rate measurement methods,the Winter Kennedy method is preferred for measuring turbine flow rates,since it is convenient,practical and economical.This paper describes efficiency tests on a large 300 MW Francis turbine,with the flow rate measured using the Winter Kennedy method and the Winter Kennedy flow rate coefficient calibrated using the Gibson method.The measured turbine efficiency curve is then compared with the curve provided by the manufacturer.The CFD calculations including the spiral case are then used to analyze the influence with the coefficient K and index n in the Winter Kennedy flow rate formula on the flow rate measurement.The uncertainty values of n and K are a key reason for the differences between the curves obtained from the efficiency test and the curves provided by the manufacturer.
出处 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第8期2199-2205,共7页 中国科学(技术科学英文版)
基金 supported by the National Natural Science Foundation of China (Grant No.50979044) State Key Laboratory of Hydroscience and Engineering of China (Grant No. 2009T3)
关键词 hydraulic turbine efficiency test flow rate measurement CFD calculations measurement uncertainty 大型水轮机 效率测试 汽轮机 流量测量 效率曲线 机组 混流式水轮机 CFD计算
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  • 1刘晓亭,李维藩,等.水力机组现场测试手册[M].北京:中国水利电力出版社,2006.
  • 2邓清顺.水轮机效率试验与经济效益.云南水力发电,2007,(2):3-5.

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