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| 基于流动控制技术的低比转速离心泵叶轮研发 | |
| 引用本文： | 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,2011,29(6):466-470. |
| 作者姓名： | 陈红勋 刘卫伟 见文 魏培茹 朱兵 |
| 作者单位： | 1. 上海大学上海市应用数学和力学研究所,上海200072;上海市力学在能源工程中的应用重点实验室,上海200072 2. 上海东方泵业(集团)有限公司,上海,201906 3. 上海大学上海市应用数学和力学研究所,上海,200072 |
| 基金项目： | 上海市高校创新团队项目 |
| 摘 要： | 低比转速离心泵由于叶轮直径大,出口宽度小,流道扩散严重等原因,导致其效率偏低且很难改善.在计算流体动力学数值模拟和模型泵性能试验基础上,分析了低比转速离心泵效率与内部流动特性之间的关系,为改善泵内流动结构和提高效率提供依据.基于以控制边界层分离为目的的流动控制技术,提出了两种新型的离心泵叶片结构,研制了新的叶轮.为便于比较分析,对新叶轮在保证原模型泵叶轮直径、出口宽度和安装尺寸等主要几何参数不变的前提下进行加工制造,并分别将常规设计的叶片、分流叶片和两种新型叶片的叶轮在同一泵体内进行试验.试验结果表明：分流叶片提高了泵在大流量区域的效率但不能拓宽流量范围,引流叶片使水泵在更大流量范围内运行,并且在整个流量范围内都显著地提高了泵效率.流动控制技术成功地改善了低比转速离心泵内部流动结构并提高了泵性能. |
| 关 键 词： | 离心泵 低比转速 流动控制 计算流体动力学 效率 |
Development of low specific-speed centrifugal pump impellers based on flow control technique |
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| Chen Hongxun,Liu Weiwei,Jian Wen,Wei Peiru,Zhu Bing.Development of low specific-speed centrifugal pump impellers based on flow control technique[J].Drainage and Irrigation Machinery,2011,29(6):466-470. | |
| Authors: | Chen Hongxun Liu Weiwei Jian Wen Wei Peiru Zhu Bing |
| Institution: | Chen Hongxun1,2,Liu Weiwei3,Jian Wen3,Wei Peiru3,Zhu Bing1 (1.Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,China,2.Shanghai Key Laboratory of Mechanics in Energy Engineering,3.Shanghai East Pump(Group) Co.Ltd.,Shanghai 201906,China) |
| 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,wh... |
| Keywords: | centrifugal pump low specific-speed flow control computational fluids dynamics efficiency |
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