MIXING ELEMENT FOR GAS TURBINE UNITS WITH FLUE GAS CIRCULATION Russian patent published in 2016 - IPC F02C3/34 

FIELD: machine building.

SUBSTANCE: invention relates to recirculation of flue gas in gas turbine units, namely to elements for the flue gas mixing with ambient air upstream the compressor. Suction section (2) upstream the compressor (1) input of gas turbine unit (1-7) with the flue gas recirculation contains section (22) with inflow (31) created by side wall (28-30), in it the fresh sucked air flows along the main direction (33) of air flow. Section contains at least two mixing tubes (32) continuing in the inflow (31) from at least one side wall (28-30). Each mixing tube (32) contains inlet (34) on the said at least one side wall (28-30) to receive recirculated flue gas (41), and contains outlet hole (37) located at distance from the said side wall (28-30), to blow down the circulated flue gases (41) from the mixing tube (32) in the air flow. At least two mixing tubes (32) are located in row, at that said row is aligned substantially along direction (33) of air flow, and most top along flow mixing tube (32) creates the front edge of this row.

EFFECT: uniform mixing and increased fail-safety of the device.

24 cl, 7 dwg