排灌机械工程学报2013，Vol.31Issue(8)：662-666,5.DOI:10.3969/j.issn.1674-8530.2013.08.004
叶轮后密封环直径加大量对轴向力特性的影响
Influence of increments of back sealing ring diameter of impeller on characteristic of axial force
摘要
Abstract
Reducing the axial force is an important way to improve the service life and efficiency as well as to get higher lift of submersible pumps.With water as the medium,standard k-ε turbulence model in multiple reference frames was used to simulate the whole flow field for unsteady incompressible flow in the 300QJ230-40/2 submersible pump.The overall performance and axial force were numerically obtained,and the simulated performance curves as well as axial force against head were drawn.Mechanical metrical method for axial force was used in the test,and the simulated curves were compared with the test curves of both performance and axial force.The results show that these curves are close to each other under working conditions from 0.8 Qsp to 1.2 Qsp (heads from 46 m to 36 m).With the front sealing ring diameter increment of △rm-≠0,the diameter and number of balance holes of the impeller of constant,numerical calculations and analysis for both the whole flow filed and axial force were conducted,and the results show that the axial force could be effectively reduced by increasing the back sealing ring diameter of the impeller.In order to find the way of prediction and evaluation of axial force on similar-designed pumps,dimensionless curves of axial force coefficient and specific area were drawn.关键词
潜水泵/叶轮后密封环直径/无因次曲线/轴向力/数值模拟/试验Key words
submersible pump/back sealing ring diameter of the impeller/dimensionless curves/axial force/numerical simulation/test分类
农业科技引用本文复制引用
刘在伦,李振华,吴佼,曾继来..叶轮后密封环直径加大量对轴向力特性的影响[J].排灌机械工程学报,2013,31(8):662-666,5.基金项目
国家自然科学基金资助项目(51269010) （51269010）
浙江省自然科学基金资助项目(Y12E90005) （Y12E90005）
