Advanced Analysis of Multi-Ring Liquid Seals

[+] Author and Article Information
S. W. Reedy

Cummins Engine Co., Inc., Columbus, IN 47203

R. G. Kirk

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0238

J. Vib. Acoust 114(1), 42-46 (Jan 01, 1992) (5 pages) doi:10.1115/1.2930232 History: Received August 01, 1989; Online June 17, 2008


The equilibrium position of multi-ring seal assemblies is of major importance to the designer of high pressure centrifugal compressors. Typical computer codes now use a curve-fit of the Short Bearing Sommerfeld Number for eccentricity evaluation with the assumption that all rings in the assembly will always operate at the same eccentricity. The results from the recently developed seal analysis program, SEALS, have shown that the equal eccentricity assumption for multi-ring seals is questionable. This paper will review the analysis procedure used in SEALS, and present the results of an eccentricity evaluation comparison with a seal analysis program currently being used in industry.

Copyright © 1992 by The American Society of Mechanical Engineers
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