FIELD: machine building.
SUBSTANCE: proposed gas turbine incorporates first stage nozzle blades arranged telescopically in radial direction in nozzle box inner ring. Nozzle box inner ring outer surface is provided with nozzles or sets of nozzles with their inlet communicated with high pressure chamber and their outlet communicated with low pressure chamber. Nozzle outlet parts are directed towards cooled surface of nozzle blade lower shoulder. Nozzle inner surface is made shaped, while the number of nozzles or sets of nozzles equals that of the first stage nozzle blades.
EFFECT: higher reliability.
5 dwg
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