Modeling dry wear of piston rod sealing elements of reciprocating compressors considering gas pressure drop across the dynamic sealing surface

[+] Author and Article Information
Andreas Kaufmann

HOERBIGER Ventilwerke, Seestadtstraße 25, 1220 Vienna, Austria

Tino Lindner-Silwester

HOERBIGER Ventilwerke, Seestadtstraße 25, 1220 Vienna, Austria

Thomas Antretter

Institute of Mechanics, Montanuniversität Leoben, Franz-Josef Straße 18, 8700 Leoben, Austria

1Corresponding author.

ASME doi:10.1115/1.4038863 History: Received November 02, 2017; Revised December 21, 2017


The wear of dynamic sealing elements, i.e. elements that seal against a moving counter-surface, is highly complex. In dry-running reciprocating compressors, these sealing elements, commonly referred to as packing rings, have to seal the compressed gas against the environment along the reciprocating rod. Since the packing rings' seal effect arises from the differential pressure to be sealed, it is of paramount importance to take into account the gas pressure drop across the dynamic sealing surface. This paper presents a numerical model that allows us to calculate how the wear of such a packing ring evolves with time. An analytical solution is used to verify the numerical model.

Copyright (c) 2017 by ASME
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