Transmission path analysis on the radial vibration of a francis turbine

被引：0

作者：

Zhi B. ^{[1
,2
]}

Qin J. ^{[1
]}

Li Z. ^{[3
]}

Yu Y. ^{[1
]}

机构：

[1] Engineering Technology Research Center of Small Watershed Conservancy University of Henan Province, Kaifeng

[2] Tibet Water Conservancy and Hydropower Planning & Design Institute, Lasa

[3] Spic Yunnan International Ayeyawady Hydropower Construction Branch Company, Tengchong

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 22期

关键词：

Francis turbine; Guide bearing; Kronecker algebra; Radial vibration; Random parameter;

D O I：

10.13465/j.cnki.jvs.2019.22.002

中图分类号：

学科分类号：

摘要：

In order to analyze the radial vibration characteristics of an umbrella hydro-generator unit with a Francis turbine, and study the multipath gradient ordering of unbalanced radial force in frequency domain, the theoretical analysis and numerical calculation on the transfer path of radial vibration were carried out by using the random parameters structure analysis method in mixed additive and equivalent form, based on the basic theory of vibration and generalized probabilistic perturbation method, applying the Kronecker algebra, matrix calculus and other methods, and introducing mixed disturbance factors which considered the correlation between the disturbance quantity and parameters. The uncertainties of parameters such as mass, damping, and stiffness were considered simultaneously. Through an example, the transmissibility and transmissibility variance of the radial vibration path as well as their ranges were given in frequency domain. The feasibility of the method was clarified. The study offers technical support for the unit transmission path analysis and the vibration control of hydropower stations. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：7 / 13

页数：6

共 18 条

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