Experimental research of francis pump-turbines with splitters in a pump mode

A. Rusanov, O. Khoryev, Yevgen Agibalov, Y. Bykov, P. Korotaiev
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引用次数: 2

Abstract

The pathways of efficiency increase of pump-turbines are considered. It is revealed that one of the perspective ways is to use runners with additional shortened blades - splitters. The description and characteristics of the test stand in the laboratory of hydromachines of the A. Pidgorny Institute of mechanical engineering problems of the NAS of Ukraine (IPMash) and their compliance with the requirements of the International Standard for conducting research of hydraulic machines is presented. The description of methods of design and manufacture of four variants of runners with splitters with different lengths: 50, 65, 80 and 100% relative to the main blade is presented. For all variants of flow parts, experimental characteristics in pump mode were obtained and plotted. The influence of the splitter geometrical parameters on the values of maximum efficiency and the parameters of the optimum mode are revealed. The dependences of efficiency and head on the flow rate for all variants of runners with splitters at different values of the guide vane opening are given. The effect of splitter length on the energy characteristics of the pump-turbine in the pump mode is revealed. The comparison of energy and pressure characteristics of flow parts with seven- and eight-blade runners is given.
带分流器的混流式水泵水轮机在泵工况下的试验研究
考虑了水泵水轮机效率提高的途径。提出了一种可行的方法,即在流道上加装缩短的叶片分流器。介绍了乌克兰国家科学院A. Pidgorny机械工程问题研究所(IPMash)水轮机实验室试验台的描述、特点及其符合水轮机研究国际标准的要求。介绍了相对于主叶片长度为50%、65%、80%和100%的四种不同类型分流道的设计和制造方法。对各种流动部件,得到了泵态下的实验特性并进行了绘图。揭示了分离器几何参数对最大效率值和最优模态参数的影响。在导叶开度的不同值下,给出了所有带分流器的流道的效率和扬程对流量的依赖关系。揭示了分流器长度对泵水轮机在泵模式下能量特性的影响。对七叶和八叶流道的流动部件的能量和压力特性进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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