Patent ID: 7690207
Filing Date: 2010-04-06
Classification: F23R

Abstract:
1. A floating collar and combustor arrangement for receiving a fuel nozzle, comprising: a combustor having an opening defined in a dome thereof for receiving the fuel nozzle, the combustor having an inner surface and an outer surface; a mounting arrangement comprising a mounting flange circumscribing the opening, the mounting flange being fixedly bonded from outside of the combustor to the outer surface thereof, and a cap spaced-apart in an axial direction relative to the combustor from the mounting flange, the cap fixed to the mounting flange; a floating collar slidably trapped between the mounting flange and the cap such that relative axial movement is substantially restrained but relative radial movement is permitted, the floating collar having a central aperture substantially aligned with the opening in the dome and adapted for receiving the fuel nozzle; and a thermal barrier applied to the inner surface of the combustor all the way to an edge of the opening in the dome.