초록 ▼

In a gas turbine engine having gaseous oxidant delivered to a turbine from a source such as a pressurized bottle via a conduit or duct, a compact annular combustor is provided which offers enhanced performance through incorporation of means for uniformly distributing portions of the oxidant utilized

In a gas turbine engine having gaseous oxidant delivered to a turbine from a source such as a pressurized bottle via a conduit or duct, a compact annular combustor is provided which offers enhanced performance through incorporation of means for uniformly distributing portions of the oxidant utilized as a diluent, and for convective cooling of engine components.

대표청구항 ▼

[ We claim:] [1.] A gas turbine engine comprising:a turbine wheel rotatable in a direction of rotation about an axis;an annular nozzle for directing gases at said turbine wheel to cause rotation of the turbine wheel in said direction of rotation;an annular shroud disposed about said axis in close ra

[ We claim:] [1.] A gas turbine engine comprising:a turbine wheel rotatable in a direction of rotation about an axis;an annular nozzle for directing gases at said turbine wheel to cause rotation of the turbine wheel in said direction of rotation;an annular shroud disposed about said axis in close radial proximity to said turbine wheel for containing gases directed at the turbine wheel by the nozzle against said turbine wheel;an annular combustor disposed about said axis, with said combustor including:a liner defining an annular combustion chamber having at least one inlet port for receiving oxidant and an annular outlet in fluid communication with the nozzle;a housing connected to the shroud, said housing being spaced outward from said liner, with said shroud and housing in combination substantially surrounding said liner and defining an oxidant flowpath including an oxidant inlet duct in fluid communication with a source of compressed oxidant supplying a predetermined flow of oxidant at one end thereof, and an oxidant outlet in communication with said inlet port of said annular combustor at the other end thereof, said oxidant flowpath extending substantially entirely about said annular combustor and along said shroud so as to form a first flowpath branch about the radially outermost wall of said liner and a second flowpath branch about the radially innermost wall of said liner, said first and second flowpath branches being joined adjacent said inlet duct;a screen disposed in said oxidant flowpath at a point along said flowpath between said inlet duct of the housing and the junction of said first and second flowpath branches, said screen having openings therein of a size selected to restrict said predetermined flow of oxidant within the flowpath in a manner causing the predetermined flow of oxidant to be distributed evenly between said first and second flowpath branches about said liner and along said shroud to provide cooling therefor.