Patent ID: 7238002
Filing Date: 2007-07-03
Classification: F01D,F05D

Abstract:
1. A damper system for a stage of a turbine comprising: at least one inner shroud disposed circumferentially of a hot gas path through the turbine stage, each said inner shroud having a first surface defining in part a hot gas path through the turbine; a shroud body for supporting said inner shroud; at least one damper block, each engaging a backside surface of a respective said inner shroud opposite said first surface; a damping mechanism carried by said shroud body and connected to said damper block for applying a load to said damper block and said inner shroud through the engagement of the block with the backside surface of the inner shroud thereby damping vibratory movement of said inner shroud; and a seal system including at least one primary, integral seal and at least one secondary, non-integral seal to limit axial and radial hot gas leakage through the stage.