GAS TURBINE ENGINE WITH AMBIENT AIR COOLING DEVICE COMPRISING PRELIMINARY SWIRLER Russian patent published in 2017 - IPC F01D5/08 F01D5/14 F01D25/12 F01D11/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to power engineering. A gas turbine engine comprising an ambient air cooling loop (10), the loop comprises a cooling channel (26) located in turbine blade (22) and connected by fluid with ambient air source (12); and a preliminary swirler (18), wherein the said preliminary swirler comprises an internal rim and outside rim, and a plurality of guide vanes, each vane passes from the internal rim to the outside rim. The adjacent in circumferential direction guide vanes form appropriate nozzles between them. The preliminary swirler is suitable for swirling the ambient air sucked via nozzles, and directing the swirled ambient air to base of the turbine blade. Also options of the gas turbine engine are provided.

EFFECT: invention increases the engine efficiency by minimization of cooling air volume taken from the compressor.

18 cl, 9 dwg