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Evaluation of Loads on a Hypercompressor Plunger in Service Conditions

[+] Author Affiliations
Enzo Giacomelli, Nicola Campo, Simone Pratesi

GE Energy-Nuovo Pignone, Florence, Italy

Giovanni Zonfrillo, Andrea Meneghin

University of Florence, Florence, Italy

Paper No. PVP2005-71294, pp. 49-54; 6 pages
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 5: High Pressure Technology, Nondestructive Evaluation, Pipeline Systems, Student Paper Competition
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4190-1 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME


The plunger is a very critical component for the operation of hyper-compressors. To achieve long packing ring life it is necessary to select very hard materials for the plunger. As a consequence of the special materials used, the plunger is very brittle. To guarantee safe operation it is necessary to have perfect alignment to avoid bending stress that could cause plunger failure. The effects of the whole system, including packing rings and supporting crossheads were analyzed using a multi-body dynamic simulation to determine the maximum loads acting on the plunger. This analysis verified the viability of this critical component during abnormal machine operating conditions.

Copyright © 2005 by ASME
Topics: Stress



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