Patent ID: 6948320
Filing Date: 2005-09-27
Classification: F01D,F02C,Y02T

Abstract:
1. An expansion turbine stage for compressed gases comprising: (a) a housing comprising a holder bore and a plurality of flow guide channels; (b) an overhung turbine rotor disposed within said housing, said plurality of flow guide channels being adapted to feed compressed gas to said turbine rotor for centripetal flow through said turbine rotor; and (c) an out-flow diffuser arranged in said holder bore, as a separate component, and enclosed by said housing downstream of said turbine rotor for delay of a cold expanded gas stream from said out-flow diffuser, said out-flow diffuser comprising a non-metallic material having a low heat conductivity relative to the cold expanded gas stream for thermal insulation of said housing, said out-flow diffuser having a flow entry region and being rigidly connected with said housing only in the flow entry region.