Experimental Study on a Centrifugal Pump with an Open Impeller during Startup Period

查看全文 作　　者：Yuliang [1]Zhang;Zuchao [1,2]Zhu;Yingzi [2]Jin;Baoling [2]Cui;Yi [2]Li;Huashu [2]Dou

机构地区：[1]The State Key Lab of Fluid Power Transmission and Control,Zhejiang University;[2]The Province Key Lab of Fluid Transmission Technology,Zhejiang Sci-Tech University

出　　处：《Journal of Thermal Science》索引2013年第22卷第1期,共6页

基　　金：supported by the National Natural Science Foundation of China(No.21076198,51249003);the National Basic Research Program ('973' Program,No.2009CB724303) 摘　　要：Transient performance of fluid machinery during transient operating periods,such as startup and stopping,has been drawn more attentions recently due to the growing engineering needs.In this paper,the transient behavior of a prototype centrifugal pump with an open impeller during rapid startup period is studied experimentally.The variations of the rotational speed,flow rate,head,and shaft power during rapid startup period are recorded in experiments at different discharge valve openings.In addition,the non-dimensional flow rate and head are also used to analyze the transient behavior.The research result shows that the rise characteristic of the rotational speed is not basically changed by working points,while mainly depends on the startup characteristics of the driving motor.Compared with the rapid rise of the rotational speed,the flow rate rises slowly in the initial stage of startup.Moreover,the flow rate lags behind the rotational speed to rise to final stable value,and the delay becomes more severe with the increase of the discharge valve opening.The shaft power impact phenomenon generally exists in the process of startup.The non-dimensional analysis shows that the non-dimensional head is very high at the very beginning of startup,and quickly falls to the minimum,then gradually rises to final stable value,while the non-dimensional flow rate always shows the rise tendency during whole startup period.In conclusion,it is found from the non-dimensional results that the quasi-steady analysis is unable to accurately assess the transient flow during startup period. 关键词：开式叶轮启动期离心泵实验无量纲分析旋转速度瞬时流量瞬态特性

相关文献

参考文献（9）
引证文献（7）
耦合文献（14）

参考文献(9)

引证文献(7)

耦合文献(14)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Experimental Study on a Centrifugal Pump with an Open Impeller during Startup Period

参考文献(9)

引证文献(7)

耦合文献(14)

用户提示