可倾瓦滑动轴承-转子系统振动及临界特性试验  

Vibration and Critical Characteristics of the Tilting Pads Journal Bearing-Rotor System

作　　者：纪峰 王一汀 刘莹 李永超 JI Feng;WANG Yiting;LIU Ying;LI Yongchao(Research Institute of Shaanxi Environmental Protection Industry Co.,Ltd.,Xi'an 710100,China;Xi’an University of Finance Economics,Xi’an,710100,China)

机构地区：[1]I.陕西环保产业研究院有限公司,西安710100 [2]西安财经大学,西安710100

出　　处：《机械设计与研究》2022年第1期105-108,113,共5页Machine Design And Research

基　　金：陕西省重点研发计划资助项目(20I7GY-168,2019GY-086)。

摘　　要：极端条件下工作的大功率旋转机械支撑轴承,即可倾瓦滑动轴承(TPJBs)支承的转子其振动和临界转速超过设计极限可能导致机组故障3旨在研究大直径轴承的试验技术,为了给转子-轴承系统的设计提供实验支持,进行了振动监测实验。给出了传感器布置、监测系统和临界转速辨识方法。利用工厂试验台,获得了不同工况下的振动数据,提出了临界转速的无励磁辨识方法,并给出了由振动数据确定的转子临界转速及理论计算结果。通过实验结果与理论计算结果的比较,为转子-轴承系统的设计提供依据。High power rotating machinery requires large diameter bearings that can perform under extreme conditions.Vibrations and critical speeds of the rotor supported by tilting pad journal bearing(TPJBs)exceeding their design limits may cause unit failure.This paper aims to investigate the experimental technique for large diameter bearings.To obtain the experimental support for rotor-bearing system design,an experiment focusing on vibration monitoring is conducted.The sensors arrangement,monitoring system and critical speed identification method are presented.By using the test bench in a factory unit,a large amount of vibrational data under different working situations is obtained.In addition,a non-excitation identification method for critical speed is proposed.The critical speed of rotor identified through vibration data is obtained.The theoretical calculation results are also presented.The basis for rotor-bearing system design can he obtained through comparisons between the experimental results and the theoretical calculation data.

关 键 词：振动 可倾瓦滑动轴承 滑动轴承 临界转速 大直径轴承 转子系统 

分 类 号：TP133.31[自动化与计算机技术—控制理论与控制工程]