Performance of contactless gas-dynamic seals with V-shaped helical slots

Two models of a contactless gas-dynamic seal, with V-shaped helical slots, used by the German company Burgmann, and with helical slots narrowed uniformly towards the axis of rotation, are compared. Algorithms for calculating the response, the stiffness, and the principal moment of the resistance for...

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Bibliographic Details
Published in:Journal of machinery manufacture and reliability 2008-12, Vol.37 (6), p.607-611
Main Authors: Vinokurov, V. N., Emel’yanov, A. V., Knyazev, A. V., Sorokina, I. I.
Format: Article
Language:English
Subjects:
Diagnostics and Testing
Engineering
Experimental Machine Mechanics
Machines
Manufacturing
Processes
Online Access:Get full text
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Summary:Two models of a contactless gas-dynamic seal, with V-shaped helical slots, used by the German company Burgmann, and with helical slots narrowed uniformly towards the axis of rotation, are compared. Algorithms for calculating the response, the stiffness, and the principal moment of the resistance forces of the gas layer, as well as the gas flow rate through the operating gap, are given. It has been found that the seal with V-shaped slots performs worse overall than the common model with uniformly narrowed slots.
ISSN:1052-6188
1934-9394
DOI:10.3103/S1052618808060149