认为突发性振动原因是运行中转子的油膜涡动和匝间短路、线圈膨胀受阻等引起的热不平衡。
It is concluded that the causes of sudden vibration are oil film whirl and thermal unbalance of generator rotor resulting from interturn short-circuit and hindered winding expansion etc.
本文采用非线性分析方法研究了同时考虑支承阻尼和转子外阻尼的弹性支承滑动轴承系统的油膜失稳振动问题。
This paper studies the film unstable vibration of bearing system supported by flexible support considering both support damp and rotor extemal damp by use of nonlinear analysis.
分析了转子轴承系统中流体动态力的形成和自激振动的产生与油膜涡动、油膜振荡的故障。
The formation of fluid dynamic force and the occurrence of self-excited vibration and oil film vortex of rotor system are analyzed.
分析了一个由油膜轴承支承的转子在碰摩时的振动特性。
Vibration characteristics of a rub impact rotor system supported on oil film bearings were investigated.
对机组突发性振动的成因进行了频谱分析，确认油膜振荡的振动特征并加以消除。
Through frequency spectrum analysis, the causes of sudden vibration of the unit are found out, and confirm that has the feature of oil film vibration, and then is eliminated.
现今，有不少航空发动机都采用了挤压油膜阻尼器来减小发动机的振动，而挤压油膜阻尼器在机动过载的作用下的运动特性将对发动机转子产生重要影响。
Nowadays, squeeze film dampers ( sfd ) are used to reduce the vibration in many aero - engines, and then their performance in maneuver flight will affect the whole engine.
本文采用一个简单近似模拟系统说明油膜自激振动与极限环是密切相关的。
In this paper we employ a simpk approximate simulated system to explain that self-oscillation of oil membrane is in close relationship with limit cycles.
对硝铵车间j 1 01汽轮机振动大、噪声大的现象进行诊断，诊断结果为油膜振荡。
The phenomena of serious vibration and noise of J101 steam turbine in ammonium nitrate shop are diagnosed. The result of diagnosis is oil film oscillation.
汽轮发电机组轴系失稳是关系到设备安全运行的重要振动故障。介绍了一台汽轮发电机组典型油膜振荡振动故障的分析处理过程。
This paper presents the whole process of vibration analysis and troubleshooting of a steam turbine generator, which exhibited oil-excited instability during load up.
汽轮发电机组轴系失稳是关系到设备安全运行的重要振动故障。介绍了一台汽轮发电机组典型油膜振荡振动故障的分析处理过程。
This paper presents the whole process of vibration analysis and troubleshooting of a steam turbine generator, which exhibited oil-excited instability during load up.
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