排灌机械工程学报2011，Vol.29Issue(6)：466-470,5.DOI:10.3969/j.issn.1674-8530.2011.06.002
基于流动控制技术的低比转速离心泵叶轮研发
Development of low specific-speed centrifugal pump impellers based on flow control technique
摘要
Abstract
The efficiency of a low specific-speed centrifugal pump is low, it is very difficult to improve its efficiency due to the large impeller diameter, narrowed blade width and severe diffusion in the flow passages. Based on CFD numerical simulations and performance tests, a relationship between efficiency and internal flow characteristics of a low specific-speed centrifugal pump was analyzed to establish a basis for improving the flow structure in impeller and increasing the pump efficiency. The updated impellers, which were respectively with two types of blade structure proposed by using boundary layer control techniques, were developed. In order to analyze and compare easily, the main geometric parameters of the new impellers,such as diameter, width and installation size, were consistent with the original impeller. All the experiments on pump performance were conducted in the same casing. The experimental results show that the efficiency of pumps with splitter blades is improved in large capacity region, but the flow range is not extended. The efficiency of the pump with drainage blades is improved significantly at every flow rate. Further,the maximum flow rate is extended. The flow control techniques have been applied successfully to improve the flow pattern in impellers and the pump efficiency.关键词
离心泵/低比转速/流动控制/计算流体动力学/效率Key words
centrifugal pump/low specific-speed/flow control/computational fluids dynamics/efficiency分类
农业科技引用本文复制引用
陈红勋,刘卫伟,见文,魏培茹,朱兵..基于流动控制技术的低比转速离心泵叶轮研发[J].排灌机械工程学报,2011,29(6):466-470,5.基金项目
上海市高校创新团队项目 （）
本研究工作得到了上海市科学技术委员会和上海市宝山区科学技术委员会的资助,资助课题编号为06ZR14032,10100500200,07-H-1. （）
