文章基本信息

标题：Study on Damping Characteristics of Tilting-Pad Gas Seals Based On Random Decrement Method
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作者：Hao Cao ; Fei Chen ; Xiaowen Wu 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：2
页码：1-11
DOI：10.1088/1755-1315/252/2/022052
出版社：IOP Publishing
摘要：The influence of the airflow excitation force on the damping characteristics of the seals is an important index to evaluate the stability of seals. In order to verify the stability of the tilting-pad seals proposed by author, in this paper, an impact test is used to test the damping characteristics of the cylinder installed with tilting-pad seals and fixed-pad seals respectively. The multiple hammering signals are processed by the random reduction method to minimize the environmental and anthropogenic interference. Finally, a comparison has been carried out between these two seals under the same experimental conditions, and the result shows that the absolute damping factors of these two seals both decrease with the increase of rotor speed. However, the absolute damping factor of tilting-pad seals is bigger than that of fixed-pad seals, which indicates that the stability of tilting-pad seals is higher than that of fixed-pad seals.