基于射流补水的水泵水轮机S特性改善研究
Study on Improvement of Pump Turbine S-Characteristics Based on Jet Refill
胡加琨 1周大庆 1王胤淞 2陈会向 3郭俊勋4
作者信息
- 1. 河海大学能源与电气学院,江苏南京 211100
- 2. 中国电建集团中南勘测设计研究院有限公司,湖南长沙 410007
- 3. 河海大学农业科学与工程学院,江苏南京 211100
- 4. 河海大学水利水电学院,江苏南京 210098
- 折叠
摘要
针对水泵水轮机的"S"特性提出了在导叶顶盖位置无叶区处加装注水管的解决方案,并模拟了注水管安装在不同位置时的"S"特性曲线,分析了加装注水管后转轮区域内流线及转轮各叶道流量的分布规律.结果表明,于导叶顶盖加装注水管可以有效改善转轮内部流动,减轻转轮和导叶内部流动的相互影响,减小叶道涡的尺寸,同时有效缓解了转轮各叶道流量分布不均的现象.在注水管处于无叶区中段和活动导叶附近时,对"S"特性的改善效果明显.
Abstract
Aiming at the"S"characteristic of pump turbine,the solution of installing water injection pipe in the leaf-less area at the top of guide vane was proposed.The"S"characteristic curves were simulated at different positions of the water injection pipe,and the changing laws of streamline in runner region,flow distribution in each runner channel were analyzed after installing water injection pipe.The results show that the installation of water injection pipe on the top of the guide vane can effectively improve the flow characteristics of the runner and reduce the interaction between the runner and the guide vane,and the different locations of the water injection pipe have a certain effect on the improvement effect.When the location of the water injection pipe is in the middle of the leafless region and near the inlet end of the runner,the improvement of"S"characteristics is relatively obvious.
关键词
"S"特性/水泵水轮机/射流补水/注水管Key words
"S"characteristics/pump turbine/jet refill/water injection pipe引用本文复制引用
基金项目
国家自然科学基金项目(51979086)
国家自然科学基金项目(51839008)
国家自然科学基金项目(52006053)
江苏省自然科学基金项目(BK20200508)
出版年
2024
NETL
NSTL
维普
万方数据