Transient Experiments on a Prototype Pump with an Atypical Open Impeller for Different Discharge Valve Openings  

作　　者：Xiao Sun Huifan Huang Yuliang Zhang Lianghuai Tong Xiaowei Xu 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]Quzhou Academy of Metrology and Quality Inspection,Quzhou,324024,China [4]The Zhejiang Provincial Key Lab of Fluid Transmission Technology,Zhejiang Sci-Tech University,Hangzhou,310018,China [5]Zhuzhou Nanfang Valve Co.,Ltd.,Zhuzhou,412000,China

出　　处：《Fluid Dynamics & Materials Processing》2024年第10期2251-2264,共14页流体力学与材料加工（英文）

基　　金：supported by Science and Technology Project of Quzhou(Grant Nos.2023K256,2023NC08);Zhejiang Provincial Natural Science Foundation of China(Grant No.LZY21E050001);Hunan Province Key Field R&D Plan Project(Grant No.2022GK2068).

摘　　要：In order to obtain the transient characteristics of a low-speed centrifugal pump during the start-up and shutdown stages,dedicated experimental tests were conducted with eight different valve opening conditions.The Pearson correlation coefficient was used to reveal the linear correlation between variables.According to the results,the stable rotational speed decreases with increasing valve opening(rotational speed decreases from approximately 1472 to 1453 r/min),while the stable shaft power exhibits an increasing trend(shaft power increases from approximately 0.242 to 0.390 kW).The stable time and zeroing time of each parameter during start-up and shutdown processes vary,with the flow zeroing time significantly increasing with the relative flow,reaching up to 10.468 s,while the shaft power zeroing time is roughly between 1.219 and 1.375 s.The results demonstrate that with increasing valve opening,the stable and zeroing time of flow significantly increase(|r|greater than 0.95),while the stable and zeroing time of rotational speed,power,and head display a smaller sensitivity on the valve opening(|r|less than 0.6).

关 键 词：Centrifugal pump STARTUP SHUTDOWN external characteristics zeroing time 

分 类 号：TH311[机械工程—机械制造及自动化]