某新型高速涡旋压缩机转子系统动力特性分析  

Dynamic Characteristics Analysis of Rotor System of a New High Speed Scroll Compressor

作　　者：溥江 张秀华 苏亚锋[2] 姚宏 PU Jiang;ZHANG Xiuhua;SU Yafeng;YAO Hong(School of Mechatronics Engineering,Guizhou Minzu University,Guiyang 550025,China;School of Mechanical Engineering,Guizhou University,Guiyang,550025,China)

机构地区：[1]贵州民族大学机械电子工程学院,贵州贵阳550025 [2]贵州大学机械工程学院,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2020年第2期23-27,共5页Journal of Guizhou University:Natural Sciences

基　　金：贵州省科技计划项目资助(黔科合基础[2019]1166号);贵州大学引进人才项目资助(贵大人基合字(2015)51)

摘　　要：作为第三代主流压缩机的涡旋压缩机,因其转子为偏心结构,在受到动涡旋盘偏心回转产生的巨大离心力作用下导致整机振动加剧,使其一般只能在低于7 000 RPM的转速下正常工作,极大制约了系统效率的提升。为此,对正在研发的最高工作转速为12 000 RPM的涡旋压缩机转子系统进行动力特性研究。基于等效力学模型及动平衡方程,确定平衡块的质量及位置,由坎贝尔图、各转速下涡动频率及振型云图得知,在0~12 000 RPM转速下,转子系统没有产生共振,且运行平稳。证明该系统的工作效率可通过提高转子转速的方法来实现,这也为偏心结构压缩机转子结构设计提供一理论参考。As the third-generation mainstream compressor,the rotor system of the scroll compressor has an eccentric structure. Affected by the huge centrifugal force generated by the eccentric rotation of the orbiting scroll,the whole machine vibrates intensively,which results in the normal working speed being lower than 7000 RPM,so the system efficiency is limited greatly. The dynamic characteristics of the scroll compressor rotor system with the highest working speed of 12000 RPM was researched. The equivalent mechanical model and the dynamic balance equation were established,and the mass and position of the balance blocks were determined in this paper. According to the campbell diagram,whirl frequency and vibration pattern at different speeds,the rotor system does not resonate at 0 ~ 12000 RPM and runs smoothly. It is proved that it is feasible to improve the system efficiency by increasing the rotor speed. This provides also a theoretical reference for the rotor structure design of the eccentric structure compressor.

关 键 词：涡旋压缩机 动力特性 坎贝尔图 涡动频率 共振 

分 类 号：TH16[机械工程—机械制造及自动化]