1) oil whip
油膜振荡
1.
On-line elimination of oil whip by passive electromagnetic damper;
被动式电磁阻尼器在线消除油膜振荡研究
2.
Elimination of oil whip online by additional bearing static load;
通过附加轴承静载荷在线消除油膜振荡故障
3.
Fault diagnosis,cause analysis,and treatment of oil whip for Wangting 9F gas-steam combined cycle units
望亭电厂9F燃机油膜振荡故障诊断及原因分析和处理
2) Oil film oscillation
油膜振荡
1.
Diagnosis and treatment of oil film oscillation in 200 MW power generating set at Mudanjiang No.2 Power Plant;
牡二电厂200MW机组油膜振荡故障诊断及处理
2.
1 steam operated water pump vibrated severely, and it was confirmed through the analysis of data gathered through several tests that oil film oscillation occurred in No.
经过对多次试验所测得的数据进行分析,确认1号小汽轮机发生了油膜振荡。
3.
The oil film oscillation mechanism was analyzed.
油膜振荡是汽轮机组运行过程中的常见故障之一。
3) oil whipping
油膜振荡
1.
In this paper, the mechanism of oil whirl and oil whipping, and signal gathering and the processing technology is studied, based on which LabVIEW programming language is used to exploit the data acquisition analysis system of the steam turbine unit’s rotor vibration, so as to get the Time-domain analysis, Frequency analysis, relativity analysis, wavelet analysis, and HHT analysis.
本论文首先对油膜涡动、油膜振荡的机理以及信号的采集与处理技术进行比较深入的分析与研究,在此基础上利用LabVIEW编程语言开发了转子振动数据采集分析系统,该系统具有对转子振动信号进行时域分析、频谱分析、相关性分析、小波分析和HHT分析的功能,另外采用改进的Muszynska模型,可以模拟、仿真油膜涡动和油膜振荡信号,为研究该类型故障提供了一种研究手段。
4) oil-film oscillation
油膜振荡
1.
On the basis of wavelet packet decomposition technique introduced firstly, the measured unstable oil-film oscillations of single-disc and single-span rotor system were investigated.
在介绍小波包分解原理的基础上 ,对试验测得的单盘单跨转子系统的油膜振荡非平稳信号用小波包分解方法进行了研究。
2.
In this paper we majorly discuss the mechanics of the oil whip, and its influencing factor, and the method to detect oil whip and to avoid the occurrence of oil whip, so as to prevent the generation of the oil-film oscillation, raise the usage and productive efficiency, improve the stability of equipment operation, reduce the failure of the electric device.
油膜振荡是造成传动机械滑动轴承处出现较多故障的原因之一,本文重点对传动机械的油膜振荡的机理研究及影响因素进行分析,以便尽可能地避免油膜振荡的产生。
5) oil/gas whip
油(气)膜振荡
6) oil film vibration
油膜振动，油膜振荡
补充资料：油膜振荡
油膜振荡
oil whipping
顶部间隙减小，或刮大轴瓦两侧的油楔，增加轴承的楠回度;也可采取提高进油温度的措施来降低油的猫度，或缩短轴瓦的长度，适当加大比压(轴瓦单位垂直投形面积上的轴颈载荷)。youmo zhendong油膜振荡(011 whipping)由滑动轴承支承的汽轮发电机组的转子由于轴承油膜反作用力而引起的自激振动。此时发电机轴颈中心在轴承中作回旋涡动，在轴转速接近并超过轴系第一临界转速两倍时与轴系固有的横向振动产生共振，又称共振涡动。在汽轮发电机组起动升速过程中，最初转子的轴颈绕轴颈中心旋转，运转是稳定的，当外界有扰动力使轴颈中心离开原来稳定旋转时的位里，新的油膜力有一切向分量推动轴颈中心绕原来稳定旋转时的中心涡动，即轴颈在振动，但振幅不大，其振荡频率稍低于转子转速的一半，故又称半频振荡或半速涡动。当转子转速超过二倍临界转速时，涡动转速维持与临界转速相等，并引起激烈的共振，轴颈振幅突然增大而不衰减，严重时导致轴承油膜破坏以及转轴损坏。 为了避免油膜振荡，最好采用可倾瓦轴承或油囊式轴承，或采用椭圆瓦轴承，以提高轴承的稳定性(见抽系德定性)。在现场消除油膜振荡，可根据增大轴颈在轴承内的偏心率的原则，修刮上下轴瓦的中分面使
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参考词条