黄腾,江新喻,黄秉方,胡一帆,刘志远,李琪飞
HUANG Teng,JIANG Xinyu,HUANG Bingfang,HU Yifan,LIU Zhiyuan,LI Qifei

• 1:国机通用机械科技股份有限公司
• 2:兰州理工大学能源与动力工程学院
• 3:甘肃省流体机械及系统重点实验室

摘要(Abstract)：

为了提高双吸式离心泵的运行效率，对某水厂原水泵的叶轮结构进行了优化设计。通过对叶轮的几何结构进行系统研究，以叶轮后盖板的进口安放角β_(1h)、前盖板的进口安放角β_(1s)、后盖板的出口安放角β_(2h)、前盖板的出口安放角β_(2s)及叶片包角φ为主要优化参数。在变量的取值区间内对叶轮进行几何重构，并生成训练集，进而构建响应面高维代理模型。以此模型作为优化目标变量y，对叶轮进行了优化研究，并通过对比优化后双吸泵扬程、效率的数值模拟结果与试验结果，验证了模型的可靠性。结果表明，优化后的叶轮在设计工况下显著改善了流动分布，减少了不稳定流动，并有效降低了叶轮进口的湍动能，同时提升了叶轮出口的速度；在压水室出口一侧，泵的整体效率提升约3%；优化后的模型在流量为0.7Q_d,0.8Q_d,0.9Q_d,Q_d的各工况下均实现了超过3%的效率提升，其中，在0.7Q_d和0.8Q_d工况下，扬程的涨幅最大，增长了约0.8 m；优化措施显著拓宽了双吸式离心泵的高效工作区，提高了其整体性能。研究结果不仅验证了优化方法的有效性，而且为双吸式离心泵叶轮设计提供了一种高效的优化途径。
To improve the efficiency of double-suction centrifugal pumps,this study optimizes the impeller design for a specific water intake pump.Key parameters such as the inlet and outlet installation angles of the rear and front cover plates (β_(1h),β_(1s),β_(2h),β_(2s)) and the blade wrap angle（φ）were systematically varied.Geometric reconstructions of the impeller were made within these parameter ranges to create a training dataset,and a high-dimensional surrogate model based on response surface methodology was developed,and the reliability of the model was verified by comparing the numerical simulation results and experimental results of the optimized double suction pump head and efficiency.The results show that the optimized impeller enhanced flow distribution,reduced turbulence at the inlet,and increased outlet velocity,resulting in approximately 3%efficiency improvement,especially notable at the pressure chamber outlet.Efficiency gains of over 3%were observed at flow rates of 0.7Q_d,0.8Q_d,0.9Q_d,and Q_d,with the greatest head increase of about 0.8 m at 0.7Q_d and 0.8Q_d.This optimization extends the high-efficiency range of the pump and provides an effective method for impeller design.

关键词(KeyWords)： 双吸式离心泵;响应面高维代理模型;优化设计
double-suction centrifugal pump;response surface high-dimensional agent model;optimized design

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(52066011);; 智慧水厂系统研究项目（2024050485）

作者(Author): 黄腾,江新喻,黄秉方,胡一帆,刘志远,李琪飞
HUANG Teng,JIANG Xinyu,HUANG Bingfang,HU Yifan,LIU Zhiyuan,LI Qifei

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