The plunger is a very critical point for the operation of hyper-compressors. To obtain a long life for packing rings it is necessary to select very hard materials for the plunger. As a consequence of the special materials used, the plunger results to be very brittle. To guarantee a safe operation it is necessary to have a perfect alignment to avoid bending stress that could cause the plunger failure. The effects of the whole system, including packing rings and supporting crossheads, are analyzed with a multi-body dynamic simulation to evidence the worst loads acting on the plunger. This allows to verify the capability of such a critical component during abnormal operating conditions of the machine.
Evaluation of loads of a hypercompressor plunger in service conditions / E.Giacomelli; N.Campo; S.Pratesi; G.Zonfrillo; A.Meneghin. - STAMPA. - 5:(2005), pp. 49-54. (Intervento presentato al convegno Pressure Vessels and Piping 2005 tenutosi a Denver, Colorado, USA nel 17-21 luglio 2005) [10.1115/PVP2005-71294].
Evaluation of loads of a hypercompressor plunger in service conditions
ZONFRILLO, GIOVANNI;
2005
Abstract
The plunger is a very critical point for the operation of hyper-compressors. To obtain a long life for packing rings it is necessary to select very hard materials for the plunger. As a consequence of the special materials used, the plunger results to be very brittle. To guarantee a safe operation it is necessary to have a perfect alignment to avoid bending stress that could cause the plunger failure. The effects of the whole system, including packing rings and supporting crossheads, are analyzed with a multi-body dynamic simulation to evidence the worst loads acting on the plunger. This allows to verify the capability of such a critical component during abnormal operating conditions of the machine.
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