排灌机械工程学报2017，Vol.35Issue(3)：185-191,7.DOI:10.3969/j.issn.1674-8530.15.0248
陶瓷泵半开式叶轮前盖板流线对泵性能的影响
Influence of shroud contour of semi-open impeller on hydraulic performance of ceramic centrifugal pump
摘要
Abstract
In order to investigate the effect of shroud contour of semi-open impeller on the hydraulic performance of a ceramic pump,seven contours with different angles between the contour and the radial direction,namely 24°,22°,20°,18°,16°,14° and 12° are designed and corresponding numerical simulations are carried out,the hydraulic performance as well as flow field in these pumps are obtained.The variations of static pressure,total pressure and relative velocity along streamlines from the inlet to the outlet of impeller,the mass flow rate through the gap between the casing and the contour and the flow rate at the outlet of impeller are analyzed in detail.The simulated results show that as the angle decreases the pump head and total efficiency decline,and the highest efficiency moves towards a low flow rate.The increased leakage through the gap in the mid-portion of contour,reverse and secondary flows at the outlet of impeller are responsible for the reduction in both the head and efficiency.A comparison between the simulated performance curves and tested data for the optimum (20° angle) and poorest (12° angle) cases are made.The simulated results show good agreement with the measurements,in consequence,the optimization design is achieved.The results can provide a reference for the design of shroud contour of semi-open impeller in ceramic centrifugal pumps.关键词
陶瓷泵/半开式叶轮/前盖板流线/数值模拟/优化设计Key words
ceramic pump/semi-open impeller/meridional shape/numerical simulation/optimization design分类
农业科技引用本文复制引用
陶艺,袁寿其,刘建瑞,张帆,陶建平..陶瓷泵半开式叶轮前盖板流线对泵性能的影响[J].排灌机械工程学报,2017,35(3):185-191,7.基金项目
国家自然科学基金重点资助项目(51239005) （51239005）
江苏高校优势学科建设工程项目 （）
