Combustor assembly including a transition inlet cone in a gas turbine engine

摘要

A combustor assembly defining a main combustion zone where fuel and air are burned to create hot combustion products includes a liner, a transition duct, and a transition inlet cone. The liner defines an interior volume including a first portion of the main combustion zone, and has an inlet and an outlet spaced from the inlet in an axial direction. The transition duct includes an inlet section and an outlet section that discharges gases to a turbine section. The inlet section is adjacent to the outlet of the liner and defines a second portion of the main combustion zone. The transition inlet cone is affixed to the transition duct and includes a frusto-conical portion extending axially and radially inwardly into the main combustion zone. The transition inlet cone deflects combustion products that are flowing in a radially outer portion of the main combustion zone toward a combustor assembly central axis.

主权项

1. A combustor assembly defining a main combustion zone where fuel and air are burned to create hot combustion products, the combustor assembly comprising:
a liner defining an interior volume including a first portion of the main combustion zone, the liner having an inlet and an outlet spaced from the inlet in an axial direction extending parallel to a central axis of the combustor assembly; a transition duct having an inlet section and an outlet section that discharges gases to a turbine section, the inlet section being adjacent to the outlet of the liner and defining a second portion of the main combustion zone; a transition inlet cone affixed to the transition duct and including a frusto-conical portion extending axially and radially inwardly into the main combustion zone, wherein the transition inlet cone deflects hot combustion products that are flowing in a radially outer portion of the main combustion zone toward the central axis of the combustor assembly; a spring clip structure positioned radially between the outlet of the liner and a portion of the transition inlet cone thereby forming a radial gap; and wherein the transition inlet cone further comprises a radially outwardly extending flange joined to the cylindrical portion, and wherein the flange is received in a chamfer formed in the inlet section of the transition duct to serve as an axial stop for substantially preventing axial movement between the transition inlet cone and the transition duct.