TURBINE IMPELLER AND METHOD OF FASTENING THE RETAINING PIN FOR THE WIRE FOR THE TURBINE IMPELLER Russian patent published in 2021 - IPC F01D5/30 F01D5/32 

FIELD: turbines.

SUBSTANCE: turbine impeller that holds the fixing wire to prevent the turbine rotor blades from moving along the mating grooves includes: a plurality of legs that form housing portions that receive a portion of the fixing wire; and a wire holding pin for holding the holding wire in the placement portions. The tab has a toe groove extending from the radially inner end towards the radially outer side. The wire retaining pin has a first pin portion having a width smaller than the pin slot and a second pin portion having a width greater than the pin slot. The first part of the finger has many split parts. The wire retaining pin is positioned such that the first pin portion is located in the pin groove and the second pin portion is located in the receiving portion and is secured to the tab by split portions that are folded outward.

EFFECT: possibility of suppressing occurrence of residual tensile stresses on the outer peripheral section of the turbine impeller when fixing the holding fingers for the wire to hold the fixing wire.

10 cl, 12 dwg