圆盘通孔叶轮的能量转换特性  

Characteristics of energy transformation in disc impellers with holes

作　　者：王桃 向茹 严敬 周敏[1,2] WANG Tao;XIANG Ru;YAN Jing;ZHOU Min(School of Energy and Power, Xihua University, Chengdu, Sichuan 610039, China;Key Laboratory of Fluid and Power Machinery,Ministry of Education(Xihua University),Chengdu,Sichuan610039,China)

机构地区：[1]西华大学能源与动力工程学院,四川成都610039 [2]流体及动力机械教育部重点实验室(西华大学),四川成都610039

出　　处：《排灌机械工程学报》2022年第8期771-776,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：四川省教育厅重大培育项目(18CZ0016);西华大学校人才引进项目(Z2010810);西华大学研究生创新基金(YCJJ2021060)。

摘　　要：为研究圆盘通孔叶轮的流动及能量转换特性,以能量转换及定量的数学分析为依据,通过对圆盘通孔叶轮内介质的运动规律及受力分析,证明了此类叶轮对水流做功不同于叶片泵的做功机理,即叶轮以产生哥氏加速度的作用力对水做功,且叶轮做功量与水流机械能增量存在等值关系.同时,以理论方式揭示了该类泵的一些不同于离心泵的外特性:叶轮产生的理论扬程不随流量变化而变化;在相同的转速与叶轮直径条件下,圆盘通孔泵将产生更高的扬程.有关圆盘通孔泵的理论结果有助于深化叶轮流动的研究方法,为分析圆盘通孔叶轮内的流动及叶轮做功特性提供一定的理论依据.In order to study the flow and energy conversion characteristics of disc impeller with holes,based on energy conservation theorem and quantitative mathematical calculation analysis,the mechanism of doing work which differs from that of centrifugal pumps was analyzed,that is,the disc impeller performs work by making use of the thrust which caused Coriolis acceleration and the increment of mechanical energy of fluid was equivalent to the work performed by disc impeller.It is proved that the working mechanism of this kind of impeller for water flow is different from that of vane pump,that is,the impeller works on the water with the force generating Coriolis acceleration,and there is an equivalent relationship between the amount of work done by the impeller and the increment of water flow mechanical energy.At the same time,some hydraulic characteristics of this kind of pump which are different from centrifugal pump are revealed theoretically:the theoretical head produced by the impeller does not change with the flow.Disc pump generate higher heads than centrifugal pumps with the same impeller diameters and rotation speed.The results will help develop research approach for disc pumps and be beneficial in flow and energy conversion study in disc pumps.

关 键 词：圆盘通孔叶轮 能量转换 能量特性 流动分析 哥氏加速度 

分 类 号：G63[文化科学—教育学]