AIR REGULATION FOR FILM COOLING AND EMISSION CONTROL OF COMBUSTION GAS STRUCTURE

摘要

A gas turbine engine compressed air flow control arrangement, including: a combustion gas structure having an acceleration geometry (20) configured to receive combustion gas (18) from a can combustor and accelerate the combustion gas (18) to a speed appropriate for delivery onto a first row of turbine blades, the combustion gas structure defining a straight combustion flow path; a film cooling hole (58) disposed through the combustion gas structure at a location within or downstream of the acceleration geometry (20); a sleeve (64) surrounding at least a portion of the combustion gas structure comprising the film cooling hole and defining a volume (62) between the combustion gas structure and the sleeve (64); and an adjustable flow control system configured to adjust a flow volume between the plenum (44) and the volume (62).

主权项

1. A gas turbine engine compressed air flow control arrangement, comprising:
a combustion gas structure comprising an acceleration geometry configured to receive combustion gas from a can combustor and accelerate the combustion gas to a speed appropriate for delivery onto a first row of turbine blades, the combustion gas structure defining a straight combustion flow path; a film cooling hole disposed through the combustion gas structure at a location within or downstream of the acceleration geometry; a sleeve surrounding at least a portion of the combustion gas structure comprising the film cooling hole and defining a volume between the combustion gas structure and the sleeve; and an adjustable flow control system configured to adjust a flow volume through the sleeve.