【摘要】 为实现低比转速潜水排污泵高扬程、高效率、无过载性能的统一,该文对WQS150-48-37型低比转速潜水排污泵采用不同设计方法,经优化得出3种方案。应用Pro/E软件建模,结合Fluent软件对3种方案进行了多工况内部流场分析和性能预测,并与外特性试验结果对比。研究结果表明:采取增大叶片包角、减小出口角,控制流道扩散程度和增大蜗壳直径等方法可以得到满足高效率、高扬程、无过载要求的设计方案。其中,突破传统离心泵设计方法的新型通道式叶轮高效区范围更宽,扬程曲线陡降,无过载性能较好,可为高扬程无过载潜水排污泵的进一步优化设计提供参考依据。更多还原

【Abstract】 In order to achieve the high-head,high-efficiency and non-overload performance in low specific speed submersible sewage pump,the WQS150-48-37 submersible sewage pump was designed with different design methods,and 3 optimization plans were obtained.The models were established using Pro/E software and Fluent program was applied to analyze the interior flow field and predict the performance of the pump under multiple loading conditions.The comparison between the predicted performance data and the tested results showed that a high efficiency,high-head,and non-overload design scheme can be obtained by increasing the blade wrap angle and diameter of the volute,reducing the blade outlet angle,controlling channel diffusion reasonably.The pump with new-type passage centrifugal impeller which broke through the traditional design had wider high efficiency area,steep head curve and better non-overload performance.This study can provide a certain reference for optimization design of high-lift non-overload sewage pump.更多还原