摘要
转轮的泄漏量是引起水电机组抬机现象的原因之一。本文根据一低比转速混流式水轮机在电站运行实例及实测结果对其抬机现象进行了分析和CFD计算。研究结果表明产生抬机现象与转轮泄漏量大小有关 ,特别是低比转速混流式水轮机 。
The leakage rate of Francis runner is one reason causing the phenomenon of the lifting hydroelectric generator set.An example of experiment data of the low specific speed Francis turbine which is running on hydraulic power station is presented in this paper.The phenomenon of the lifting hydroelectric generator set has been analyzed by CFD tools.The research results indicate that there are relationships between the phenomenon of lifting set and the leakage rate of Francis runner.The sudden change of leakage rate of a low specific speed Francis turbine will specially cause the phenomenon of the lifting hydroelectric generator set.
出处
《水力发电学报》
EI
CSCD
北大核心
2004年第4期106-111,共6页
Journal of Hydroelectric Engineering
基金
国家"九五"攀登计划预研项目资助 (PD952 1 90 7)
关键词
混流式水轮机
抬机
CFD
泄漏
比转速
Francis turbine
lifting set by water power
CFD
leakage
specific speed
