SECTIONAL COOLING DEVICE AND METHOD OF NOZZLE GUIDE VANE COOLING Russian patent published in 2017 - IPC F01D5/18 F01D9/02 

FIELD: power industry.

SUBSTANCE: sectional cooling device for supplying a cooling stream in a turbine with a flue gas flow comprises a nozzle guide vane, a deflector for the cooling medium and an injection plate. The nozzle guide vane has an insert located in its aerodynamic part and an outer side surface. The deflector for the cooling medium has a passage for the high-pressure cooling medium communicating with the noted insert in the first contour. The injection plate is positioned above the noted outer side surface in the second contour. A post-impact pressure chamber is located between the injection plate and the outer side surface of the nozzle guide vane. The deflector for the cooling medium further comprises the first sealing layer extending around the injection plate.

EFFECT: increased cooling efficiency.

14 cl, 5 dwg