TY  - EJOU
AU  - Sun, Xiao 
AU  - Tong, Jiangbo 
AU  - Zhang, Yuliang 
AU  - Cai, Haibing 
AU  - Zhou, Wen 
AU  - Jia, Xiaoqi 
AU  - Ou, Litao 

TI  - Experimental Analysis of Radial Centrifugal Pump Shutdown
T2  - Fluid Dynamics \& Materials Processing

PY  - 2024
VL  - 20
IS  - 4
SN  - 1555-2578

AB  - 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.
KW  - Centrifugal pump; power frequency; frequency conversion; shutdown; external characteristic; experimental study

DO  - 10.32604/fdmp.2023.045541