A theoretical and experimental study on characteristics of water-lubricated double spiral-grooved seals

Guo-yuan Zhang, Wei-gang Zhao, Xiu Yan, Xiao-yang Yuan

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The spiral-grooved seal is a prime candidate for application to liquid oxygen (LOX) turbopumps. A theoretical model of double spiral–grooved seals dealing with the viscosity–temperature relation is presented. The effect of operating parameters (rotational speed, supply pressure) and configurative parameters (depth of spiral groove) on the basic static characteristics (opening force, leakage, static friction torque, face temperature, and power loss) of double spiral–grooved seals are examined. Comparisons are presented between measurements and theoretical predications for a narrow spiral-grooved face seal with an average diameter of 100 mm, operating at high speed and using water as a test fluid. The theoretical and experimental results indicate that the temperature on seal faces rises and friction torque increases with the speed and supply pressure, and these increases vary slightly with the depth of the spiral groove. These findings lend great theoretical and experimental insights to the design of face seals applied in liquid engine turbopumps.
Original languageEnglish
Pages (from-to)362-369
Number of pages8
JournalTribology Transactions
Volume54
Issue number3
Early online date18 Mar 2011
DOIs
Publication statusPublished - 2011

Keywords

  • design
  • hydrostatic lubrication
  • mechanical seal (face seal)
  • mechanical face seals
  • rocket engines
  • liquid
  • water

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