排灌机械工程学报2011，Vol.29Issue(5)：418-422,5.DOI:10.3969/j.issn.1674-8530.2011.05.010
新型竖井贯流泵装置研发与数值分析
Development and numerical analysis of new-type shaft tubular pumping system
摘要
Abstract
Based on comparing structural features of different tubular pumping systems and technical characteristics of cut-off devices in common use, aiming at the characteristics of low head, shorter annual operation time and higher safety and reliability requirements of city flood-control pumping stations, a new-type shaft tubular pumping system was invented, which is composed of a shaft suction box, a tubular pump and a siphon-type discharge passage with a vacuum breaker valve as cutoff device. Taking a real pumping station in Yancheng city as an example, the computational fluid dynamics method was adopted to analyze the internal flow of the new-type model tubular pumping system and predict its energy performances. The time-averaged Navier-Storks equations were closed by RNG k - e turbulent model to adapt internal flow of siphon-type discharge passage with larger curvatures. The method of multi-reference frame (MRF) was used to deal with the coupling of rotating impeller and static guide vane,and SIMPLEC algorithm was adopted to achieve the coupling solution of velocity andpressure. Computational results show that the internal flow of the new-type shaft tubular pumping system through preliminary optimization is smooth, and the model pumping system efficiency reaches 56. 0% when the design head and the relevant discharge are 1. 15 m and 0. 326 m3/s respectively, and up to 68. 8% when the maximum head and the relevant discharge are 1.95 m and 0. 296 m3/s respectively.关键词
竖井式贯流泵装置/断流方式/内部流态/数值分析/性能预测/城市防洪Key words
shaft tubular pumping system/cut-off mode/internal flow pattern/numerical analysis/performance prediction/city flood-control分类
农业科技引用本文复制引用
朱红耕,戴龙洋,张仁田,朱国贤,吕赛军,费海蓉..新型竖井贯流泵装置研发与数值分析[J].排灌机械工程学报,2011,29(5):418-422,5.基金项目
“十一五”国家科技支撑计划项目(2006BAB04A03) （2006BAB04A03）
江苏省水利科技项目(2010023) （2010023）
江苏省水利动力工程重点实验室开放课题(K100016) （K100016）
