Power plants – Combustion products used as motive fluid – With addition of steam and/or water
Patent
1998-08-21
2000-09-05
Thorpe, Timothy S.
Power plants
Combustion products used as motive fluid
With addition of steam and/or water
60748, F02C 700
Patent
active
061125113
ABSTRACT:
An apparatus is disclosed for injecting fluid coolant into a gas turbine engine combustion system at a location distal the fuel nozzle, such as at the primary or dilution orifices of the combustor. In one embodiment of the invention, the apparatus comprises a substantially hollow cylindrical tube adapted for insertion into a primary jet orifice of the combustor. A water nozzle is housed at the end of the tube opposite the primary jet orifice. The water nozzle is positionally adjustable relative to the inner liner. A pair of apertures is disposed along the tube between the primary jet orifice and the water nozzle so as to admit primary jet air from the plenum surrounding the combustion chamber into the tube. The apertures are configured to impart a swirling motion to the primary jet air as it enters the tube. Alternatively, at least one baffle may be housed within the tube proximal the aperture to impart a swirling motion to fluid communicated to the tube by the plenum. The water nozzle mixes water with the swirling air in the tube prior to the swirling air being admitted into the combustor through the primary air jet orifice. By pre-mixing the water with primary air, the need for complicated water/fuel injectors is obviated and the problems associated with injecting water proximal the fuel injector are eliminated.
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Allied-Signal Inc.
Desmond, Esq. Robert
Gartenberg Ehud
Thorpe Timothy S.
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