摘要
水轮机止漏环是设置在转轮与顶盖、底环间用于减小漏水并可更换的金属密封结构。本文以国内某抽蓄机组为研究对象,结合同水头段相似机组的结构型式和参数优化,旨在改善水泵水轮机止漏环处的机械性能和水力性能,并通过有限元方法,对优化前后的水力模型进行了深入对比分析。研究结果表明,本文提供的优化方案能明显降低转轮上、下腔过流面的压力值,并有效减少止漏环的漏水量。研究成果对提升水泵水轮机的水力效率及增强机组系统稳定性具有重要意义。
The labyrinth ring is a metal sealing structure located between the turbine runner and the head cover as well as the bottom ring of a hydraulic turbine,designed to minimize water leakage and facilitate replacement.Focusing on a domestic pumped storage unit,this study aims to enhance the mechanical and hydraulic performance of the labyrinth ring in pump turbines by drawing on the structural designs and parameter optimizations of similar units operating at the same head.A comprehensive comparative analysis of the hydraulic models before and after optimization was conducted using the finite element method.The research findings indicate that the proposed optimization significantly reduces the pressure values on the upper and lower flow surfaces of the runner and effectively decreases water leakage through the labyrinth ring.These results are pivotal in improving the hydraulic efficiency and enhancing the overall system stability of pump turbines.
作者
党鉴
邓鑫
凡家异
黄世海
刘辉
DANG Jian;DENG Xin;FAN Jiayi;HUANG Shihai;LIU Hui(Dongfang Electric Group Dongfang Electric Co.,Ltd.,618000,Deyang,Sichuan,China)
出处
《东方电气评论》
2024年第5期67-70,共4页
Dongfang Electric Review
关键词
水泵水轮机
止漏环
结构优化
CFD
pump turbine
labyrinth ring
structure optimization
CFD
