Flow law and algorithm of straight grate teeth under the influence of geometric parameters of tooth shape | Izvestiya vuzov. Fizika. 2021. № 6. DOI: 10.17223/00213411/64/6/138

Flow law and algorithm of straight grate teeth under the influence of geometric parameters of tooth shape

In view of the fact that the traditional method does not summarize the flow rules of the straight labyrinth seals, there is no rule to summarize the sealing effects of the labyrinth seals of different specifications. Therefore, it is proposed to study the flow law and algorithm of labyrinth seals under the influence of geometric parameters of tooth profile. According to geometric parameters of tooth profile, 22 kinds of tooth profile test models of straight tooth grating were designed. The experimental results show that the flow coefficient increases with the increase of seal clearance and tooth tip thickness. It is proportional to the tooth height, pitch and number of teeth. When compressed air passes through the labyrinth seals, more attention should be paid to the design of the first and last two teeth in the teeth group, so that the sealing effect will be better. It provides a favorable basis for studying the flow law of the labyrinth.

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Keywords

straight-through labyrinth seals, geometry parameters, sensitivity grade, discharge coefficient

Authors

Name	Organization	E-mail
Bo Zhang	Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics	zhangbo_pe@nuaa.edu.cn
Jingjing Li	Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics	15950500096@163.com
Wenkai Li	Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics	hq229818631@163.com
Honghu Ji	Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics	nuaa0096dyy@163.com

Всего: 4

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