FIELD: engines and pimps.
SUBSTANCE: invention relates to attachment of steam turbine blade on the rotor or on the turbine wheel. Turbine wheel (38) includes internal dovetail-type member (40) passing, in fact, over the entire turbine periphery and broken by slot (46) formed by removing some parts of internal dovetail-type attachment at the point of mounting the blade on the outer circumference of the turbine wheel. Locking blade (36) to be mounted on the turbine wheel includes root part (47), platform (62) and aero dynamical surfaces (60). Here note that root part (47) is furnished a pair of tails passing radially towards the turbine wheel center and spaced laterally sideway of tails (48, 50), every tail being furnished with a pair of holes (52, 54) aligned radially to receive locking pins. The holes for said pins are arranged on radially-internal side distant from the internal dovetail-type member.
EFFECT: higher strength and efficiency of locking blade and turbine wheel.
7 cl, 3 dwg
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