轴系平行不对中对离心泵转子系统振动特性的影响  

The Influence of Parallel Misalignment on the Vibration Characteristics of Centrifugal Pump Rotor System

作　　者：唐晓晨[1] 尚欢欢 郭超 董亮[2] 刘厚林[2] TANG Xiao-chen;SHANG Huan-huan;GUO Chao;DONG Liang;LIU Hou-lin(Jiangsu Zhenhua Pump Industry Co.,Ltd.,Taizhou 225500,Jiangsu Province,China;Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)

机构地区：[1]江苏振华泵业制造有限公司,江苏泰州225500 [2]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《中国农村水利水电》2021年第8期103-109,共7页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51879122);镇江市重点研发计划(GY2018025);西华大学流体及动力机械教育部重点实验室开放课题(szjj2017-094);四川省高校重点实验室开放基金(GK201816)。

摘　　要：为了揭示离心泵轴系平行不对中故障下其转子系统的振动响应情况,首先对转子系统部件进行简化,建立转子系统的有限元模型;通过对比分析振动位移线谱图和轴心轨迹图研究不同平行不对中量对离心泵转子系统振动特性的影响。研究结果表明,理想对中转子系统以径向振动为主,径向振动频率为1倍转频,轴向振动频率为1倍叶频,轴心轨迹为椭圆形;轴系平行不对中会引起转子系统较大的径向振动,振动频率表现出明显的2倍转频特征;振动幅值随着平行不对中量的增大呈线性增大;平行不对中转子系统的轴心轨迹表现为“香蕉形”。The purpose is to reveal the vibration of the rotor system of centrifugal pump in case of coupling parallel misalignment.Firstly,the rotor system components are simplified,and the finite element model of the rotor system is established.Then,the influence of different parallel misalignment on the vibration characteristics of centrifugal pump rotor system is studied through a comparative analysis of vibration displacement spectrum diagram and axis orbit diagram.The results show that the ideal centering rotor system is dominated by radial vibration,the radial vibration frequency is 1 time of the rotation frequency,the axial vibration frequency is 1 time of the blade passing frequency,and the axis orbit is elliptical;the coupling parallel misalignment causes a large radial vibration of the shaft on the rotor system and the vibration characteristic frequency shows an obvious 2APF.The vibration amplitude increases linearly with the increase in the parallel misalignment;the axis orbit of the rotor system with the parallel misalignment shows a banana shape.

关 键 词：离心泵 转子系统 平行不对中 振动响应 

分 类 号：TV675[水利工程—水利水电工程] O347.6[理学—固体力学]