Rapid set donut wedge
AssigneeSiemens Energy, Inc.
InventorsMichael R. Vindler, Michael A. Hall
Life of this patent
Estimating the term…
Abstract
A generator including a stator frame, a plurality of stator donuts including a plurality of circumferentially disposed notches, and a plurality of a wedge assemblies for mounting the stator donuts to a plurality of building bolts is presented. Each wedge assembly includes a set of opposing wedges. The set of opposing wedges are positioned within a notch in a stator donut to create a locking force between a building bolt and the stator core. The wedge assembly also includes a tensioning bolt to set the opposing wedges to a position creating the locking force between the stator core and the building bolt.
Claims15
A generator, comprising:
- a stator frame 40 including a bore 42 and a plurality of circumferentially disposed building bolts 22 mounted around and extending within the bore 42;
- a plurality of stator donuts 14 defining a stator core 10, each donut 14 including a plurality of circumferentially disposed notches 20 around an outer perimeter of the donut 14 that align with notches 20 in other stator donuts 14 and form slots extending the length of the stator core 10, each notch 20 including opposing side walls, each side wall including a groove 54;
- a plurality of wedge assemblies 100 for mounting the stator donuts 14 to the plurality of building bolts 22, each wedge assembly 100 comprising:
- a set of opposing wedges 105, 110, the set positioned within a respective notch 20 to create a locking force between a building bolt 22 of the plurality of building bolts and the stator core 10, and
- each of the opposing wedges 105, 110 comprises a tensioning bolt 120,
- wherein the tensioning bolt 120 sets the opposing wedges 105, 110 to a position creating a locking force between the stator core 10 and the building bolt 22.
A wedge assembly 100 for securing a stator core 10 of a generator to a building bolt 22 during a stator core stacking process, comprising:
- a set of opposing wedges 105, 110 configured to slide into a notch 22 of a stator core 10 and provide a locking force between the building bolt 22 and the stator core 10, comprising:
- an upper wedge 105 including a first surface and a first opposing surface including a threaded portion, and
- a lower wedge 110 including a curved surface that conforms to the building bolt 22 and a second opposing surface that mates to the first opposing surface,
- wherein the first opposing surface of the upper wedge and the second opposing surface of the lower wedge each include a repeating ramped profile that interlock when mated;
- and
- a tensioning bolt 115 arranged in the upper wedge 105 and the lower wedge 110 to receive a torque effective to drive the set of opposing wedges 105, 110 in opposite directions making the wedge assembly 100 thicker.
Dependencies are inferred from the claim text.