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J4  2011, Vol. 45 Issue (7): 1239-1243    DOI: 10.3785/j.issn.1008-973X.2011.07.016
机械与能源工程     
水泵水轮机泵工况小流量波动特性
王乐勤1,刘锦涛1,张乐福2,覃大清2,焦磊1
1.浙江大学 化学工程与生物工程学系,浙江 杭州 310027;2.哈尔滨大电机研究所,黑龙江 哈尔滨 150040
Low flow's fluctuation characteristics in pump-turbine's
pump mode
WANG Le-qin1, LIU Jin-tao1, ZHANG Le-fu2, QIN Da-qing2, JIAO Lei1
1. Department of Chemical Engineering and Biological Engineering, Zhejiang University, Hangzhou 310027, China;
2. Institute of Harbin Large Electric Machine, Harbin 150040, China
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摘要:

为了研究水泵在水轮机泵工况小流量下的流场特性,对某电站水泵水轮机进行建模.采用SIMPLEC算法和剪切压力传输模型(SST k-ω)模拟泵工况的流场特性,分析当泵工况活动导叶处于设计开度时在小流量下转轮、导叶的流场,结合实验对水泵水轮机的性能进行对比计算.结果显示,在导叶设计开度下当体积流量为设计流量的15%~53%时扬程曲线有小幅度波动;流量越小在导叶间的类似射流现象越明显,随着流量降低涡结构逐渐增多并且尺度逐渐变大,以至于充满整个活动导叶与固定导叶之间的流域;导叶的存在是小流量下扬程小幅度波动的主要原因.以上结论均可为水泵水轮机的优化设计提供依据.

Abstract:

One power plant’s pump-turbine was modeled in order to analyze the field characteristic with low flow conditions in pump mode of pumpturbine. The flow characteristic in pump mode was simulated by SIMPLEC algorithm and shear stress transmission (SST) k-ω mode. The flow of runner and vanes was analyzed when pump mode was at the condition of that guide vanes were in designed opening and low flow. The performance of pump-turbine was analyzed combined with experimental results. Results show that the head line is in the small amplitude fluctuations when the flow is 15%~53% of designed flow and vanes are in designed opening. The phenomenon like a jet between vanes is more obvious when lower flow. The number of vortex is gradually increasing with lower flow , and its scale becomes larger so that the field between stay vanes and guide vanes are filled with vortex. It is the vanes that make the head of pump-turbine fluctuate in small amplitude when the flow is low. Those results can be used to guide the pump-turbine’s optimal design.

出版日期: 2011-07-01
:  TM 711  
基金资助:

国家自然科学基金资助项目(50979095,51006087).

通讯作者: 焦磊,男,副教授.     E-mail: hj_wlq4@zju.edu.cn
作者简介: 王乐勤(1946-),男,教授,博导,从事流体机械理论研究及结构优化设计. E-mail: hj_wlq2@zju.edu.cn
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引用本文:

王乐勤,刘锦涛,张乐福,覃大清,焦磊. 水泵水轮机泵工况小流量波动特性[J]. J4, 2011, 45(7): 1239-1243.

WANG Le-qin, LIU Jin-tao, ZHANG Le-fu, QIN Da-qing, JIAO Lei. Low flow's fluctuation characteristics in pump-turbine's
pump mode. J4, 2011, 45(7): 1239-1243.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.07.016        https://www.zjujournals.com/eng/CN/Y2011/V45/I7/1239

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