FIELD: machine building.
SUBSTANCE: system of tail securing by pins for rotor disk of the steam turbine with axial flow contains pins passing axially via the holes in the alternating teeth of the blade tails and disk teeth. Ratio between axial width of disk teeth and sum of axial width of disk teeth and axial width of clearance between adjacent disk teeth is from 0.4 to 0.6. Ratio of length of disk teeth and diameter of pins is from 4 to 6.
EFFECT: invention decreases peak mechanical stresses in the disk teeth.
3 cl, 4 dwg
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