Experimental Analysis of Radial Centrifugal Pump Shutdown  

作　　者：Xiao Sun Jiangbo Tong Yuliang Zhang Haibing Cai Wen Zhou Xiaoqi Jia Litao Ou 

机构地区：[1]School of Mechanical Engineering,Hunan University of Technology,Zhuzhou,412007,China [2]College of Mechanical Engineering,Quzhou University,Quzhou,324000,China [3]Zhejiang Testing&Inspection Institute for Mechanical and Electrical Products Quality Co.,Ltd.,Hangzhou,310014,China [4]Quzhou Special Equipment Inspection Center,Quzhou,324000,China [5]The Zhejiang Provincial Key Lab of Fluid Transmission Technology,Zhejiang Sci-Tech University,Hangzhou,310018,China [6]Zhuzhou Nanfang Valve Co.,Ltd.,Zhuzhou,412000,China

出　　处：《Fluid Dynamics & Materials Processing》2024年第4期725-737,共13页流体力学与材料加工（英文）

基　　金：supported by the“Pioneer”and“Leading Goose”R&D Program of Zhejiang(Grant No.2022C03170);Science and Technology Project of Quzhou(Grant No.2022K98);Hunan Province Key Field R&D Plan Project(Grant No.2022GK2068).

摘　　要：Centrifugal pumps are widely used in the metallurgy,coal,and building sectors.In order to study the hydraulic characteristics of a closed impeller centrifugal pump during its shutdown in the so-called power frequency and frequency conversion modes,experiments were carried to determine the characteristic evolution of parameters such as speed,inlet and outlet pressure,head,flow rate and shaft power.A quasi-steady-state method was also used to further investigate these transient behaviors.The results show that,compared to the power frequency input,the performance parameter curves for the frequency conversion input are less volatile and smoother.The characteristic time is longer and the response to shutdown is slower.The quasi-steady-state theoretical head-flow curves match the experimental head-flow curves more closely at low flow rates when the frequency conversion input is considered.Moreover,in this case,the similarity law predicts the hydraulic performance more accurately.

关 键 词：Centrifugal pump power frequency frequency conversion SHUTDOWN external characteristic experimental study 

分 类 号：TH311[机械工程—机械制造及自动化]