Dynamic analysis of a planar multi-stage centrifugal pump rotor system based on a novel coupled model

2018 ◽  
Vol 434 ◽  
pp. 237-260 ◽  
Author(s):  
Wenjie Zhou ◽  
Ning Qiu ◽  
Leqin Wang ◽  
Bo Gao ◽  
Dong Liu
Keyword(s):  
Dynamic Analysis ◽  
Centrifugal Pump ◽  
Coupled Model ◽  
Rotor System ◽  
Pump Rotor ◽  
Multi Stage

scholarly journals A coupling vibration model of multi-stage pump rotor system based on FEM

Mechanika ◽  
2016 ◽  
Vol 22 (1) ◽  
Author(s):  
Leqin Wang ◽  
Wenjie Zhou ◽  
Xuesong Wei ◽  
Lulu Zhai ◽  
Guangkuan Wu
Keyword(s):  
Rotor System ◽  
Coupling Vibration ◽  
Pump Rotor ◽  
Multi Stage ◽  
Vibration Model

scholarly journals Design method of multi-stage centrifugal pump rotor assembly considering hydraulic forces acting on annular seals.

1985 ◽  
Vol 51 (465) ◽  
pp. 1444-1450
Author(s):  
Nobuyasu YOKOI ◽  
Masaya IMAI ◽  
Katsuaki KIKUCHI ◽  
Toshiki IINO ◽  
Michiyuki TAKAGI ◽  
...  
Keyword(s):  
Centrifugal Pump ◽  
Design Method ◽  
Pump Rotor ◽  
Multi Stage ◽  
Rotor Assembly ◽  
Annular Seals

Characteristics of Centrifugal Pump Rotor System Under Exciting Forces Generated by Shroud Leakage Flows

2010 ◽  
Author(s):  
Quan-zhong Liu ◽  
Ru-zhi Gong ◽  
Hong-jie Wang ◽  
Yang Yao
Keyword(s):  
Centrifugal Pump ◽  
Rotor System ◽  
Least Square ◽  
Force Model ◽  
Dynamic Force ◽  
Pump Rotor ◽  
Leakage Flows ◽  
Exciting Forces ◽  
Rotordynamic Forces ◽  
Turbo Pump

In order to investigate the flow-induced vibration in the impeller clearance of centrifugal pump, and make the rotordynamic prediction of the centrifugal pump rotor system, a rotordynamic force model is established which is indispensable to the impeller-rotor system dynamics analysis. The coefficient in the dynamic force model is solved by quasi-steady CFD solution. Multiple quasi-steady solutions of an eccentric three-dimensional model at a series of relative spin velocity yield the rotordynamic forces at different whirl frequency ratios, and a second-order least-square fitting of the rotordynamic forces generates the skew-symmetric stiffness, damping, and mass matrices. Based on the work, the finite element method is applied to establish the model of turbo pump impeller-rotor system. The phenomenon of the fluid oscillation and some typical features are explained from the perspective of oscillation fluid mechanics. The results show complicated frequency characteristics presents in the turbo pump rotor vibration due to the exciting forces generated by shroud leakage flows.

scholarly journals Research on Vibration Suppression Method Based on Coaxial Stacking Measurement

Mathematics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1438
Author(s):  
Chuanzhi Sun ◽  
Ruirui Li ◽  
Ze Chen ◽  
Yingjie Mei ◽  
Xiaoming Wang ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Vibration Suppression ◽  
Rotor System ◽  
Vibration Response ◽  
Analysis Model ◽  
Assembly Method ◽  
Multi Stage ◽  
Excitation Force ◽  
Rotor Mass ◽  
Force Vectors

A dynamic analysis model of the unbalanced vibration response of a single-rotor system is established to study the corresponding mechanism of the unbalanced excitation force and vibration response caused by the deviation of the rotor mass centroid in this paper, and finally to achieve the combined rotor vibration suppression. First, the installation of multi-stage rotors during vibration was studied, and the rotor mass centroid transfer model in the rotating coordinate system was established to obtain the unbalanced excitation force vectors of the rotors at all levels based on the traditional stacking assembly method and axiality measurement. Second, the rotor unbalance excitation force vectors were substituted at all levels to establish the finite element analysis model of the single-rotor system. Finally, a simulation analysis was carried out for the stacking assembly of the three-stage rotor, and the rotor test piece was used for the vibration experiment. The results show that the optimal assembly phase of the multi-stage rotor obtained by the dynamic analysis model of the unbalanced vibration response of the single-rotor system can effectively suppress the vibration of the combined rotor.

scholarly journals Research on Steady-State Characteristics of Centrifugal Pump Rotor System with Weak Nonlinear Stiffness

2018 ◽  
Vol 42 (3) ◽  
pp. 87-102 ◽  
Author(s):  
Wenjie Zhou ◽  
Ning Qiu ◽  
Ning Zhang ◽  
Zhounian Lai ◽  
Bo Gao
Keyword(s):  
Steady State ◽  
Centrifugal Pump ◽  
Rotor System ◽  
Nonlinear Stiffness ◽  
Pump Rotor

Dynamic analysis for a spur geared rotor system with tooth tip chipping based on an improved time-varying mesh stiffness model

2021 ◽  
Vol 165 ◽  
pp. 104435
Author(s):  
Yi Yang ◽  
Niaoqing Hu ◽  
Jinyuan Tang ◽  
Jiao Hu ◽  
Lun Zhang ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Rotor System ◽  
Time Varying ◽  
Mesh Stiffness ◽  
Stiffness Model

Flow Passage Modification and Experimental Verification of a Multi-Stage Centrifugal Pump

2013 ◽  
Vol 753-755 ◽  
pp. 2766-2769
Author(s):  
Quan Zhang ◽  
Zhi Jun Shuai ◽  
Pan Zhou ◽  
Wan You Li
Keyword(s):  
Centrifugal Pump ◽  
Cfd Simulation ◽  
Acceleration Response ◽  
Vibration Acceleration ◽  
Flow Passage ◽  
Fluid Field ◽  
Multi Stage ◽  
Through Flow ◽  
Seat Vibration ◽  
Velocity Pressure

In this paper the seat vibration acceleration response was reduced through flow passage modification of the centrifugal pump which could decrease the fluid excitation of the pump. CFD simulation technology was applied to optimize the fluid field of the multi-stage centrifugal pump, and then the velocity, pressure fluctuation and fluid excitation were concerned to investigate the effect of optimization. Finally, the influence of fluid field modification on the seat vibration response was verified experimentally.

Sign in / Sign up

Export Citation Format

Share Document