Combustion liner for a gas turbine engine

Patent · Tue Nov 18 04:00:00 EST 1986

OSTI ID:6875105

Madden, T J

This patent describes, for a gas turbine power plant, a combustor having panels generally circular in shape and extending axially arranged end to end to define an annular combustion chamber. Each of the panels have an inner surface subjected to combustion gases and an outer surface subjected to power plant cooler air. It also has means on the downstream end to develop a film of a cool air flowing from the outer surface into the combustion chamber adjacent the inner surface, openings in the panels for directing from the outer surface the cooler air to be used as combustion/dilution air radially into the combustion chamber passing through a portion of the film of cool air and obstructing the path of the portion, and means for redefining the cooling film downstream of the openings relative to the flow of the combustion gases. A grommet supported to one of the panels having a generally circular body extends through each of the openings. A lip extending from the end of the grommet partially circumscribes the circular body on its downstream side relative to the flow of the combustion gases. The lip extends axially in the downsteam direction and is spaced from the inner surface. A means is included for directly impinging the cool air from the outer surface onto the lip so that the impinged air is directed to flow adjacent the inner surface in the downstream direction. The lip has opposing the edges support means extending from the side edges to the circular body and defining with the lip an open ended channel. The channel is oriented with respect to the panels to orient the flow discharging from the lip in a given downstream direction.

• Assignee: United Technologies Corp., Hartford, CT
• Patent Number(s): US 4622821
• OSTI ID: 6875105
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
AIR FLOW
COMBUSTION CHAMBERS
COOLING
ENGINES
EXHAUST GASES
FLUID FLOW
FLUIDS
GAS FLOW
GAS TURBINE ENGINES
GAS TURBINE POWER PLANTS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LINERS
POWER PLANTS
SPACE DEPENDENCE
WASTES