叶轮转子-轴承-干气密封系统模态分析及谐响应分析

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (5): 73-77.

叶轮转子-轴承-干气密封系统模态分析及谐响应分析

张伟政, 林智, 丁雪兴, 吴传扬

兰州理工大学石油化工学院, 甘肃兰州 730050

收稿日期:2019-05-20 出版日期:2020-10-28 发布日期:2020-11-06
作者简介:张伟政(1978-),男,甘肃白银人,博士,副教授.
基金资助:
甘肃省自然科学基金(18JR3RA145)

Modal analysis and harmonic response analysis of impeller rotor-bearing-dry gas seal system

ZHANG Wei-zheng, LIN Zhi, DING Xue-xing, WU Chuan-yang

College of Petrochemical Technology, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2019-05-20 Online:2020-10-28 Published:2020-11-06

摘要/Abstract

摘要： 以“叶轮转子-轴承-干气密封”系统的动态特性为研究对象,利用软件ANSYS建立有限元模型,对系统进行满载条件下模态分析, 得到该系统各阶固有频率和振型,对该系统进行空载条件下模态分析.对比上述两种固有频率发现:工况下干气密封系统及叶轮转子所受的力降低了系统固有频率.以系统不平衡量为体载荷,通过谐响应分析方法得到系统的稳态不平衡响应曲线.

关键词: 干气密封, 模态分析, 谐响应分析

Abstract: Taking dynamic characteristics of alarge system “impeller rotor-bearing-dry gas seal” system as a research object, a finite element model has been established by adopting ANSYS software. The model is used to analyze the gas sealing system under full load condition, and natural frequencies and vibration modes in various stages are obtained. The modal analysis of the system under non-loading condition is then carried out, and the natural frequencies under above two conditions are compared and analyzed with each other. Compared with the above two natural frequencies, it is found that the force acting on the dry gas sealing system and the impeller rotor reduces natural frequency of the system. Finally, taking the unbalance of the system as body load, the steady-state unbalanced response curve of the system can be obtained by a harmonic response analysis method.

Key words: dry gas seal, modal analysis, harmonic response analysis

中图分类号:

张伟政, 林智, 丁雪兴, 吴传扬. 叶轮转子-轴承-干气密封系统模态分析及谐响应分析[J]. 兰州理工大学学报, 2020, 46(5): 73-77.

ZHANG Wei-zheng, LIN Zhi, DING Xue-xing, WU Chuan-yang. Modal analysis and harmonic response analysis of impeller rotor-bearing-dry gas seal system[J]. Journal of Lanzhou University of Technology, 2020, 46(5): 73-77.

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