摘要
分析了离心机转子不平衡量的产生机理、作用形式和平衡方法,研究了轴系动平衡控制技术,开展了不同配重的固体、粉体激振力对离心机转子振动的试验研究。结果表明:对于本结构离心机,随着转速的提高振幅逐渐增大并出现多个峰值,轴向不平衡响应远大于径向,在500r/min附近出现振动位移峰-峰值;粉体不平衡载荷激起的振动幅值略低于固体不平衡载荷振动幅值。最后,提出了改进转子和转盘连接方式以及通过轴承约束轴向跳动控制总体振动位移的改进方案。
The unbalance’s generation mechanism,action forms and balance method of the centrifuge rotor were analyzed,including the study on shafting’s dynamic balancing control technology and the excitation force’s effect of solids and powders with different counterweights on the vibration of the centrifuge rotor.The results showed that,with the increase of rotational speed,the amplitude increases gradually along with many peaks.The axial unbalanced response is much larger than the radial one,and the peak-peak value of vibration displacement appears near 500r/min.The vibration amplitude caused by the unbalanced load of powder is slightly lower than that of the solid’s unbalanced load.Finally,the approaches of improving connection mode between the rotator and turnplate and that of employing the bearing to constrain axial runout so as to control overall vibration displacement were proposed.
作者
常颖
李聪
于洪伟
刘英莉
CHANG Ying;LI Cong;YU Hong-wei;LIU Ying-li(Military Academy of Sciences Research Institute of Chemical Defense)
出处
《化工机械》
CAS
2020年第2期175-181,224,共8页
Chemical Engineering & Machinery
关键词
离心机
转子
不平衡载荷
激振力
不平衡响应
centrifuge
rotor
unbalanced load
exciting force
unbalanced response
