Lateral vibration of hydroelectric generating set with different supporting condition of thrust pad
Lateral vibration of hydroelectric generating set with different supporting condition of thrust pad
复制标题
不同推力瓦支撑条件下水轮发电机组横向振动
DOI：
10.3233/sav-2010-0569
复制
发表时间：
2011
影响因子：
1.6
通讯作者：
Lu, Wenxiu
中科院分区：
文献类型：
--
作者：
Si, Xiaohui;Chu, Fulei;Lu, Wenxiu
支撑条件的变化会改变可倾瓦推力轴承的刚度，从而可能改变转子系统的动态行为。研究了止推瓦支撑条件对水轮发电机组横向振动的影响。推力轴承的作用被描述为作用在止推环上的力矩，并计算推力轴承的倾斜刚度系数。建立了基于典型梁有限元法的模型来计算动力响应，讨论了弹性油箱支撑、刚性支撑推力垫不同高度等支撑条件的影响。结果表明，弹性油箱正常工作时，推力轴承的影响较小。当因漏油而导致支撑条件变得刚性时，推力瓦高度的差异对推力瓦的载荷分布影响明显；而推力瓦最大载荷小于许用值时，对推力轴承倾斜刚度和横向轴振动幅值的影响较小。
The variations of the supporting condition, which change the stiffness of tilting pad thrust bearing, may alter the dynamic behavior of the rotor system. The effects of supporting condition of thrust pad on the lateral vibration of a hydroelectric generating set are investigated in this paper. The action of a thrust bearing is described as moments acting on the thrust collar, and the tilting stiffness coefficients of thrust bearing are calculated. A model based on typical beam finite element method is established to calculate the dynamic response, and the effects of supporting conditions such as elastic oil tank support, different heights of the thrust pads with rigid support are discussed. The results reveal that the influence of thrust bearing is small when the elastic oil tanks work normally. When the supporting conditions turn to be rigid due to the oil leakage, the differences of thrust pad heights have evident influence on the load distribution of the thrust pads; while the effects on the tilting stiffness of the thrust bearing and the amplitude of the lateral shaft vibration is small when the maximum load on thrust pads is smaller than the allowable value.
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DOI：
10.1115/1.1355243
发表时间：
2001-04
期刊：
Journal of Vibration and Acoustics
影响因子：
--
作者：
S. Berger;O. Bonneau;J. Frěne
通讯作者：
S. Berger;O. Bonneau;J. Frěne
影响因子：
2.5
作者：
N. Mittwollen;T. Hegel;J. Glienicke
通讯作者：
N. Mittwollen;T. Hegel;J. Glienicke
DOI：
10.1299/jsme1958.15.1004
发表时间：
1972-08
期刊：
Jsme International Journal Series B-fluids and Thermal Engineering
影响因子：
--
作者：
T. Someya;M. Fukuda
通讯作者：
T. Someya;M. Fukuda
影响因子：
1.7
作者：
H. N. Özgüven;Z. Özkan
通讯作者：
H. N. Özgüven;Z. Özkan
影响因子：
5
作者：
Eskild Storteig;M. White
通讯作者：
Eskild Storteig;M. White