Calculation Method and Characteristics of Wear of Arc-Shaped Finger Seal

被引：0
|
作者：
Du C.-H. [1 ,2 ]
Yan H.-Y. [1 ]
Cui Y.-H. [1 ]
Zhang Y.-C. [1 ]
Ji H.-H. [3 ]
机构：
[1] School of Mechanical Instrumental Engineering, Xi'an University of Technology, Xi'an
[2] Suzhou Maxwell Technology Co., Ltd., Suzhou
[3] College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2021年 / 42卷 / 08期
关键词：
Contact seal; Finger seal; Structural parameters; Wear interference; Wear volume;
D O I：
10.13675/j.cnki.tjjs.190896
中图分类号：
学科分类号：
摘要：
In order to reveal the wear law and obtain structural parameters affecting the wear characteristics of the arc-shaped finger seal, the text constructed a first-order linear non-homogeneous differential equation of the volume wear of the finger seal with respect to time, through analyzing the wear process of the finger seal. A mathematical calculation model for the calculation of the amount of wear and wear rate was obtained by solving the a first-order linear non-homogeneous differential equation. And the influence of structural parameters on the wear of finger seals was studied through using the mathematical calculation model established in this paper. The results show that, the error between the leakage characteristic numerical calculation using the calculation results of wear in this paper and the experimental results in the literature is less than 5%, which proves the rationality of the wear calculation in this paper. The concepts of total wear coefficient, wear rate coefficient and wear time coefficient are put forward for the first time. The three parameters are used to describe the wear characteristics of finger seal. The wear rate coefficient and wear time coefficient change with the structure of finger slice. The volume wear and wear rate of finger seal trend change exponentially with the wear time. The degree of influence on the wear and tear of the finger seal is in descending order: finger beam thickness, finger beam root circle, finger beam top circle, finger beam base circle, finger beam line circle, circumferential angle, and finger beam clearance. © 2021, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：1839 / 1847
页数：8
相关论文
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