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Paramètres affectant des valves à clapet à performance élevée.

Parameters that affect flapper valves with high performance.

Auteurs : ZETTERHOLM G., MUELLER M., CHAI G.

Résumé

In recent years, environmental and economic considerations have led to changes in service conditions and demand for increased compressor efficiency. Flapper valve materials with higher fatigue strength have been a limiting factor in the development of compressor designs. Material manufacturers, therefore, have made great efforts to enhance the properties of existing materials and to develop new materials to keep pace with the needs of the industry. New flapper valve materials with high performance have been developed. The paper provides a review of where the technology is today. Bending fatigue strength and impact fatigue strength are the two most important properties for flapper valves. Flapper valve steel strip material with high bending fatigue strength should have a high tensile strength with high ductility. The strip surface after surface treatment should show a very good finish and high compressive residual stresses with a low stress relaxation rate. Besides all the above parameters, high damping capacity is favourable to a high impact fatigue strength.

Détails

  • Titre original : Parameters that affect flapper valves with high performance.
  • Identifiant de la fiche : 2007-0620
  • Langues : Anglais
  • Source : ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Date d'édition : 21/05/2006

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