FIELD: engines and pumps.
SUBSTANCE: device for supply of ventilating air to the turbine rotor of a gas turbine engine includes the first and the second discs of the turbine and the ring at the outlet of the second disc, which together form a monoblock drum. The second disc of the turbine includes cells made by the machining process in the rim for installation of the turbine blades. Blades are fixed in axial direction with segments of axial fixation. Segments include the base installed in a slot made in the drum. At least one hole attaching the inner space of the drum at least to some part of the above cells is made in the ring at the rim outlet. A passage is made in the segments between the hole and cells of the second disc.
EFFECT: invention allows performing the ventilation of fasteners and axial fixation of the blades.
6 cl, 9 dwg
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RU2377417C2 |
