Patent ID: 9376961
Filing Date: 2016-06-28
CPC Classification: F01D,F02C,F23R

Claim Text:
1. A system for controlling an air flow rate of a compressed working fluid to a fuel injector of a combustor, comprising: a. an outer casing that surrounds at least a portion of the combustor, the outer casing at least partially defining a high pressure plenum that surrounds at least a portion of the combustor, the outer casing having an extraction port and an inlet port that extend through the outer casing, the extraction port being in fluid communication with the high pressure plenum; b. wherein the combustor extends at least partially though the high pressure plenum, the combustor having a combustion liner, a plurality of fuel injectors circumferentially arranged around the combustion liner, an inner flow sleeve that surrounds the combustion liner, an outer air shield that circumferentially surrounds the inner flow sleeve and the plurality of fuel injectors, an injection air plenum defined between the outer air shield and the combustion liner, and an inlet to the injection air plenum, wherein the inlet is in fluid communication with the inlet port; c. an external fluid circuit that provides fluid communication between the extraction port and the inlet port; and d. an annular baffle plate that extends radially between the outer air shield and the outer casing, the annular baffle plate providing flow separation between the inlet to the injection air plenum and the high pressure plenum.