Labyrinth,Oil Film and Dry Gas Seals for Centrifugal Compressors

摘要

Dry gas seals the new entrant in the seal systems of centrifugal compressors have virtually eliminated the conventional oil film seals during the past 20-years.Practically 90% new compressors of discharge pressure and temperature upto 250-bars and 40 deg C come with dry gas seals respectively.Many retrofits are also highly successful due to several advantages like absence of complex oil systems consisting of high-pressure pumps,overhead tanks,level control systems,resultant energy and maintenance savings etc.