水泵水轮机转轮三维反问题设计与特性研究

发布时间：2018-01-09 02:30

本文关键词：水泵水轮机转轮三维反问题设计与特性研究　出处：《农业机械学报》2014年12期 　论文类型：期刊论文

【摘要】：采用全三维反问题设计方法,按照水泵工况确定设计参数,从水轮机方向进行流场计算,完成某一中高水头水泵水轮机转轮的水力设计。针对设计开发的转轮,通过模型实验测试其在不同运行工况下的性能。结果表明,设计的水泵水轮机转轮在水泵工况下的最高机组效率达到91.34%,且机组运行平稳;水轮机工况的最高机组效率为88.5%。基于全流道粘性数值计算的转轮内部流动分析表明,水泵工况下,水流光顺地通过流道,转轮内部流动损失较小;水轮机工况下,转轮进口附近存在较严重冲击损失且叶片背面低压区面积较大,影响转轮的作功能力。
[Abstract]:The hydraulic design of the runner of a middle and high head pump turbine is completed by using the full 3D inverse problem design method, and the design parameters are determined according to the pump working conditions, and the flow field is calculated from the direction of the turbine, and the hydraulic design of the runner is carried out for the purpose of the design and development. The results show that the maximum efficiency of the designed pump turbine runner under the pump condition is 91.34 and the unit runs smoothly. The maximum efficiency of the turbine is 88.5.The flow analysis of the runner based on the numerical calculation of the viscosity of the whole runner shows that the water flows smoothly through the runner under the pump condition, and the flow loss in the runner is relatively small. Under the working condition of the turbine, there is serious impact loss near the runner inlet and the area of the low pressure area on the back of the blade is large, which affects the working force of the runner.
【作者单位】：清华大学水沙科学与水利水电工程国家重点实验室;哈尔滨大电机研究所;
【基金】：国家自然科学基金资助项目(51179090) 清华大学自主科研计划资助项目(2011THZ0)
【分类号】：TV734
【正文快照】： 引言水泵水轮机转轮作为抽水蓄能机组的核心部件,在用电峰值时正向转动,用于水轮机运行;在用电谷值时反向转动,用于水泵运行。水泵水轮机转轮的性能不仅决定着电能的利用效率,而且对抽水蓄能机组的安全稳定运行有决定性影响,因此,设计开发性能优越的水泵水轮机转轮具有重大意

【参考文献】