Turbine transition component formed from a two section, air-cooled multi-layer outer panel for use in a gas turbine engine

摘要

A cooling system for a transition duct for routing a gas flow from a combustor to the first stage of a turbine section in a combustion turbine engine is disclosed. The transition duct may have a multi-panel outer wall formed from an inner panel having an inner surface that defines at least a portion of a hot gas path plenum and an intermediate panel positioned radially outward from the inner panel such that at least one cooling chamber is formed between the inner and intermediate panels. The transition duct may also include an outer panel. The inner, intermediate and outer panels may include one or more metering holes for passing cooling fluids between cooling chambers for cooling the panels. The intermediate and outer panels may be secured with an attachment system coupling the panels to the inner panel such that the intermediate and outer panels may move in-plane.

主权项

1. A transition duct for routing gas flow in a combustion turbine subsystem that includes a first stage blade array having a plurality of blades extending in a radial direction from a rotor assembly for rotation in a circumferential direction, said circumferential direction having a tangential direction component, an axis of the rotor assembly defining a longitudinal direction, and at least one combustor located longitudinally upstream of the first stage blade array and located radially outboard of the first stage blade array, said transition duct, comprising:
a transition duct body having an internal passage extending between an inlet and an outlet: wherein the duct body is formed at least in part from a multi-panel outer wall; and wherein the multi-panel outer wall is formed from
an upper section formed from an inner panel having an inner surface that defines at least a portion of a hot gas path plenum and an intermediate panel positioned radially outward from the inner panel such that at least one cooling chamber is formed between the inner and intermediate panels, and a lower section formed from an inner panel having an inner surface that defines at least a portion of the hot gas path plenum, an intermediate panel positioned radially outward from the inner panel such that at least one cooling chamber is formed between the inner and intermediate panels and an outer panel positioned radially outward from the intermediate panel; an attachment system comprising at least one seal body integrally formed with the inner panel of the lower section and having at least one portion extending radially outward with at least one pocket configured to receive a side edge of the intermediate panel of the lower section in a sliding arrangement such that the intermediate panel is able to move in-plane relative to the attachment system and to receive a side edge of the outer panel in a sliding arrangement such that the outer panel is able to move in-plane relative to the attachment system.