DONUT STATOR CORE-FRAME ATTACHMENT TECHNIQUE

摘要

A technique for securing a group of stator packs that are part of a stator core to construction bolts associated with a generator frame. The technique includes using a single wedge set to secure the group of stator packs to each construction bolt. Each wedge set includes a solid filler piece positioned within a groove on one side of a notch in the stator pack and a construction bolt filler piece having a convex shape portion configured to the shape of the construction bolt that accepts the construction bolt. A wedge member is forced between the filler pieces to secure the group of stator packs to the construction bolt.

主权项

1. A generator comprising:
a frame including a bore and a plurality of circumferentially disposed construction bolts mounted around and extending within the bore; a plurality of stacked stator packs defining a stator core, each stator pack including a plurality of circumferentially disposed notches around an outer perimeter of the stator pack that align with notches in the other stator packs and form slots extending the length of the stator core, each notch including opposing side walls where one of the side walls is shaped to conform to the construction bolt in a mating engagement and the other sidewall includes a groove; and a plurality of wedge sets for mounting the stator packs to the construction bolts, each wedge set including a solid filler piece configured to be positioned within the groove and a construction bolt filler piece having a shaped portion that conforms to the construction bolt, said wedge set further including a wedge piece positioned between the filler pieces and forcing the filler pieces apart to secure the stator packs to the construction bolt, wherein a single wedge set is provided within each notch.