Patent ID: 7861530
Filing Date: 2011-01-04
Classification: F23R

Abstract:
1. A floating collar and heat shield assembly for allowing relative movement between a combustor and a fuel nozzle while providing sealing therebetween, comprising an axially extending floating collar body adapted to be mounted in a fuel nozzle opening defined in the combustor for movement with the fuel nozzle and providing sealing between the fuel nozzle and the combustor, the axially extending floating collar body defining a passage adapted to be aligned with the fuel nozzle opening for receiving the fuel nozzle, the floating collar body having a downstream end adapted to extend into the combustor, the downstream end being provided with a radially outwardly disposed annular louver, a heat shield adapted to be fixedly mounted to the combustor and fitted about said floating collar body upstream of said annular louver, said floating collar being movable relative to the heat shield and the combustor, said louver and said heat shield defining a controlled gap therebetween, and a sealing ring mounted to a radially outer surface of said floating collar body upstream of said heat shield and in sealing engagement therewith, the sealing ring being movable together with the floating collar relative to the heat shield, said sealing ring defining at least one hole for feeding cooling air to said controlled gap.