论文标题:大型混流式水轮机参数选择研究
Research on the Parameters Selection of Large Capacity francis Turbine
论文作者 苑连军
论文导师 南海鹏；田树棠,论文学位 硕士,论文专业 水利工程
论文单位 西安理工大学,点击次数 150,论文页数 83页File Size2667k
2002-03-01论文网 http://www.lw23.com/lunwen_123167487/ 水轮机选择;比转速;目标参数;初期运行
specific speed,turbine selection,target parameters,early stage operation
随着现代科学技术的迅速发展，装设大容量水轮机的电站越来越多。在我国陆续投运的大型水轮机转轮相继不同程度地出现振动与裂纹，因此，保证大型混流式水轮机的安全稳定运行就成为设计选型研究的重要问题。 本文针对黄河上游即将开工建设的拉西瓦水电站700MW水轮机的参数选择进行了研究，通过对国内外的大容量、高水头水轮机的比转速统计计算，利用水轮机的相似理论，采用回归统计计算方法，统计出了比转速统计方程，并进行了水轮机主要参数选择论证，提出了适合拉西瓦水电站水轮机的主要目标参数。 本文提出的水轮机主要参数，结合国内外已建和拟建大型电站水轮机的实际运行和模型试验，并经过哈尔滨、东方两厂进行的计算机CFD水力计算，得出了与本文研究选择相一致的结论，并论证提出了拉西瓦水电站前期发电运行的可行性和初期运行水头。 通过对大型混流式水轮机参数选择的研究，对同水头段的转轮参数选择比较具有一定的指导意义，同时对拉西瓦水轮机在招标设计工作中具有重要的实际意义。
With the quick development of the modem scientific technology , there are more and more water power station equipped with large capacity turbines. Many large capacity turbine runners in commercial running have come to cracks or vibration problems with different extent in China.Therefore, to ensure the large Francis turbines running safely and stably is an important issue on design and type selection research.This paper elaborates the parameters selection of the 700MW turbine for Laxiwa power station located upstream Yellow River, which is coming into construction soon. Through statistical calculation of specific speed for turbines with large capacity ,high operating head in domestic and oversea power station, utilizing turbine homologous theory .adopting regression statistic calculation method, it has got specific speed statistic equation., the demonstration of primary parameters selection, and the primary target parameters suitable for Laxiwa power station .The turbine primary parameters given in this paper .incorporates the operation experience and model test of large turbine in domestic and oversea power station built and being built, by means of the CFD hydraulic calculation at Herbin E & M Limited Corporation and DongFang E & M Limited Corporation, which gets a conclusion as the same as the monographic study in this paper, gives demonstration of the prior generating operation feasibility and early stage operating head.Through the study on the large Francis turbine parameters selection ,it gives a definite instruction in runner parameters alternative selection with the same head, and also practices an important role for Laxiwa turbine calling for bid.
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