Head pulsations in a centrifugal pump

15th International Scientific and Engineering Conference Hermetic Sealing, Vibration Reliability and Ecological Safety of Pump and Compressor Machinery HERVICON+PUMPS-2017

机械制造;生态环境科学

Boiko, V.S.^1 ; Sotnyk, M.I.^2 ; Moskalenko, V.V.^2

Department of Theoretical Electrical Engineering, National Technical University of Ukraine, Kyiv Politechnic Institute Them. I. Sikorsky, 37, Peremogy pr., Kyiv

03056, Ukraine^1

Department of Applied Hydroaeromechanics, Sumy State University, 2, Rymskogo-Korsakova st., Sumy

40007, Ukraine^2

关键词: Blade passing frequency;    Design features;    Electric models;    Flowthrough;    Hydraulic loss;    Operation mode;    Vortex formation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/233/1/012058/pdf
DOI  :  10.1088/1757-899X/233/1/012058

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This article investigated the factors, which affect to the character of the head pulsations of a centrifugal pump. We investigated the dependence of the shape and depth of these pulsations from the operation mode of the pump. Was determined, that the head pulsations at the outlet of the impeller (pulsations on the blade passing frequency) cause head pulsations at the outlet of the pump, that have the same frequency, but differ in shape and depth. These pulsations depend on the design features of the flow-through part of the pump (from the ratio of hydraulic losses on the friction and losses on the vortex formation). A feature of the researches that were conducted is also the using of not only hydraulic but also electric modeling methods. It allows determining the values of the components of hydraulic losses.