FIELD: machine building.
SUBSTANCE: gas turbine consists of rotor including rotor disks with rotor blades arranged on their circumference and of coupling bolt. The coupling bolt passes along grooves in the rotor disks and holds rotor disks together in form of one unit. The rotor additionally has at least one channel surrounding the coupling bolt. At least one cross piece is positioned in the channel for fixation of position of the coupling bolt relative to axis of the rotor. The cross piece has recesses in radial direction relative to the coupling bolt. Cooling medium flows in the channel which is restricted in radial direction outside with a dividing tube or with a middle hollow shaft. The recesses function as passage ways for cooling medium.
EFFECT: raised reliability of turbine due to reduced vibrations of coupling bolt.
25 cl, 5 dwg
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