排灌机械工程学报2024，Vol.42Issue(4)：333-341,9.DOI:10.3969/j.issn.1674-8530.22.0170
立式自吸泵前口环几何参数对其自吸性能的影响
Influence of geometric parameters of front wear-ring of vertical self-priming pump on its self-priming performance
摘要
Abstract
In order to explore the influence of the geometric parameters of the front wear-ring of a verti-cal self-priming pump on its self-priming performance,the 350WFB-1200-50 externally mixed sealless vertical self-priming pump was taken as the research object.With other parameters unchanged,a total of 20 solutions were designed by changing the numerical values of the front wear-ring clearance δ and the front wear-ring length l.Using a research method that combines numerical calculation and ex-perimental verification,the hydraulic characteristic curve of each design scheme and the pressure difference between the inlet and outlet of the front wear-ring were obtained through steady numerical calculation,and the gas volume distribution cloud map of the middle section at different times of each design scheme was obtained through unsteady numerical calculations.The change diagram of the gas content rate at the outlet of the self-priming pump of each design scheme and the self-priming comple-tion time curve of each design scheme were used to study the influence of the geometric parameters of the front wear-ring on its self-priming performance.The study finds that the front wear-ring clearance δ and the front wear-ring length l have an effect on the self-priming performance of the self-priming pump,appropriately reducing the front wear-ring clearance δand increasing the front wear-ring length l can improve the self-priming performance of the self-priming pump,and when the front wear-ring clearance δis too large,the effect of the front wear-ring clearance δon the self-priming performance of the self-priming pump is larger than the effect of the front wear-ring length l on the self-priming per-formance of the self-priming pump.关键词
立式自吸泵/前口环间隙/前口环长度/自吸性能/自吸时间Key words
vertical self-priming pump/front wear-ring clearance/front wear-ring length/self-priming performance/self-priming time分类
农业科技引用本文复制引用
赵伟国,强欢欢,许强,刘明建..立式自吸泵前口环几何参数对其自吸性能的影响[J].排灌机械工程学报,2024,42(4):333-341,9.基金项目
国家自然科学基金资助项目(52169018) （52169018）
