一种低比转数耐磨离心泵水力模型的研究  

Research of a New Hydraulic Model about Low Specific Speed Slag Pump

作　　者：于海力[1] 邓晶[1] YU Hai-li DENG Jing(Beijing Aerospace Propulsion Institute,Beijing 100076,China)

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《流体机械》2016年第9期57-60,共4页Fluid Machinery

摘　　要：速度系数法是设计离心泵过流部件的常规方法,建立在前人大量的数据统计基础上,形成了一般系数选取规律,它适用于普通离心泵设计。但对于低比转数离心泵,改变叶片出口角度等设计参数时,原有统计数据不再有效,需要探索新的设计规律。本文提出一种新的低比转数离心泵水力模型应用于耐磨泵设计,做了几个应用案例,通过水力试验结果并辅以CFD计算验证,确定了该水力模型对应的速度系数,充实了离心泵设计水力模型库。Velocity coefficient method is well used when design hydraulic parts of a centrifugal pump,it is basedstatistical datas,there are rules to choose proper coefficients to design a common centrifugal pump. But when designing a new low specific speed pump, specially modifying the impeller outlet vane angular,the previous method is not valid any more. So it is needed studying new rules and providing proper velocity coefficients. This article provide a new hydraulic model to design low specific speed slag pump,which was used in some design cases,and was verified by hydraulic test or by CFD method,the corresponding velocity coefficients were provided.

关 键 词：离心泵 低比转数 速度系数 水力模型 

分 类 号：TH3[机械工程—机械制造及自动化]