System For Reducing Combustion Noise And Improving Cooling

摘要

A novel and improved system for cooling and reducing combustion noise in a gas turbine combustor is disclosed. The system includes a flow sleeve for a gas turbine combustor comprising a tubular portion and a conical portion, with a plurality of flow straighteners extending radially inward and between the tubular and conical portions and a plurality of rows of cooling holes extending about the flow sleeve, and an aft ring secured to the outlet end of the conical portion, where the aft ring includes an overlapping piston ring that is able to expand or contract in diameter. A combustion liner extends through the flow sleeve and engages an inlet of a transition duct while the piston ring of the flow sleeve also engages the transition duct to form a seal.

主权项

1. A flow sleeve for a gas turbine combustor comprising:
a tubular portion having a tubular inlet and a tubular outlet; a conical portion having a conical inlet and a conical outlet, the conical inlet secured to the tubular outlet of the tubular portion; a plurality of flow straighteners extending radially inward from the tubular portion and the conical portion; a plurality of rows of cooling holes, each row of cooling holes extending about the flow sleeve; an aft ring having a receptacle, the aft ring secured to the conical outlet; and a piston ring positioned within the receptacle, the piston ring capable of expanding or contracting in diameter.