GROOVE WEDGE OF STATOR OF LARGE-SIZE STEAM-TURBINE ELECTRIC GENERATOR

摘要

The present invention relates to main and auxiliary slot wedges of a stator for a large-scale turbo generator, and the slot wedges are of a two-layer double slot wedge structure, wherein the upper slot wedge (1) is an auxiliary slot wedge, and the lower slot wedge (2) is a main slot wedge. The upper surface of the upper slot wedge is aligned with a notch, or the upper surface of the upper slot wedge is slightly lower than the notch. The main and auxiliary slot wedges of a stator for a large-scale turbo generator provided by the present invention can effectively reduce the losses and local high temperature of a generator rotor, reduce the harmonic content of a magnetic field in the air gap of a generator, protect the generator from the overheating of a terminal structural member of the generator, and improve the capability of safe and stable operation of the generator.