摘要
针对船用旋转类设备减振降噪需求,以某型基于磁悬浮轴承的船用设备模拟轴系为对象,搭建磁悬浮轴系振动特性试验台,通过试验分析不同转速下磁悬浮轴系的振动加速度变化情况,获得轴系对中精度、联轴器安装间距等参数对磁悬浮轴系轴频和2倍频振动的影响。试验结果表明:磁悬浮轴承的电磁激励主要集中在中高频段;随着转速增加,磁悬浮轴系机脚的轴频和2倍频振动幅值会产生显著波动,但不是随转速单调递增变化;轴系对中精度主要影响磁悬浮轴系的2倍频振动,轴频和2倍频振动均随对中精度恶化不断增加;膜片联轴器的安装间距对磁悬浮轴系振动影响显著,当中间套与半联轴器由过渡配合调整为过盈配合时,磁悬浮轴系有15.5 dB左右的轴频和2倍频振动控制效果。
To address the requirements of vibration reduction and noise suppression of marine rotating equipment,the analogue shafting of a certain type of marine equipment supported on magnetic suspension bearings was taken as the research object.A test bench for the vibration characteristics measurement of the magnetic suspension shafting was built.Through the experiments,the changes in vibration acceleration of the magnetic suspension shafting at different rotational speeds were analyzed,and the influences of the parameters such as shafting alignment accuracy and coupling installation spacing on the shaft frequency and double frequency vibrations of the magnetic suspension shafting were obtained.The test results show that:the electromagnetic excitation of magnetic suspension bearings is mainly concentrated in the medium and high frequency bands.With the increase of rotational speed,the vibration amplitudes of the shaft frequency and double frequency at the foot of the magnetic suspension shafting fluctuate significantly,but the amplitudes do not increase monotonically with rotational speed increasing.The shafting alignment accuracy mainly affects the double frequency vibration of the magnetic suspension shafting,and both the shaft frequency and double frequency vibrations increase continuously as the alignment accuracy deteriorates.The installation spacing of the diaphragm coupling has a significant impact on the vibration of the magnetic suspension shafting.When the fit between the intermediate sleeve and the halfcoupling is adjusted from a transition fit to an interference fit,the magnetic suspension shafting has a vibration control effect of approximately 15.5 dB for both shaft frequency and double frequency vibrations.
作者
马振来
陈必文
李海涛
章艺
王强
MA Zhenlai;CHEN Biwen;LI Haitao;ZHANG Yi;WANG Qiang(Shanghai Marine Equipment Research Institute,Shanghai 200031,China)
出处
《噪声与振动控制》
北大核心
2025年第6期329-333,共5页
Noise and Vibration Control
关键词
振动与波
磁悬浮
轴系
振动加速度
轴频
2倍频
vibration and wave
magnetic suspension
shafting
vibration acceleration
shaft frequency
double frequency
