Turbine generator stator core attachment technique
AssigneeSiemens Energy, Inc.
InventorsDavid T. Allen, Josue Marrero
Life of this patent
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Abstract
A stator core (105) including tabbed laminations (100) stacked face-to-face to form a plurality of tabbed lamination modules (107), with each tabbed lamination including a first tab (102) and a second tab (104) extending from a circumferential edge of the lamination. Non-tabbed laminations are also stacked face-to-face to form a plurality of non-tabbed lamination modules (109), each non-tabbed lamination lacking a tab. The tabbed lamination modules are stacked face-to-face in an alternating configuration with non-tabbed lamination modules. The tabs are used to attach the stator core to an inside surface of an electrical generator frame (2), such as by attaching the tabs to frame support rings (4) of the generator frame.
Claims17
A stator core for affixing to a generator housing comprising:
- tabbed laminations stacked face-to-face to form a tabbed lamination module, each tabbed lamination comprising a first tab and a spaced apart second tab each extending from a circumferential edge of the lamination;
- non-tabbed laminations stacked face-to-face to form a non-tabbed lamination module, the non-tabbed lamination lacking any tabs;
- the non-tabbed lamination module stacked between first and second tabbed lamination modules to form a first gap between first tabs of the first and second tabbed lamination modules, and to form a second gap between second tabs of the first and second tabbed lamination modules;
- an attachment component of the stator housing for receiving within the first gap, and attached to the first tabs of the first and second tabbed lamination modules, and the attachment component for receiving within the second gap and attached to the second tabs of the first and second tabbed lamination modules;
- and
- wherein each tabbed and non-tabbed lamination defines at least one groove in a circumferential surface thereof, each groove for receiving a keybar.
A generator comprising:
- a stator core, comprising:
- tabbed lamination modules each comprising a plurality of stacked face-to-face tabbed laminations, each tabbed lamination comprising a first and a second tab extending from a circumferential edge of the tabbed lamination;
- non-tabbed lamination modules comprising a plurality of stacked face-to-face non-tabbed laminations;
- tabbed lamination modules stacked face-to-face in an alternating configuration with non-tabbed lamination modules forming a gap region between first tabs disposed face-to-face in a first tabbed lamination module and first tabs disposed face-to-face in a second tabbed lamination module with a non-tabbed lamination module disposed therebetween, and forming a second gap between second tabs disposed face-to-face in the first tabbed lamination module and second tabs disposed face-to-face in the second tabbed lamination module with the non-tabbed lamination module disposed therebetween;
- frame rings attached to an internal surface of a generator frame, and received within the first and second gaps, the first and second tabs secured to the frame rings to attach the stator core to the generator frame;
- and a rotor rotating proximate the stator core and magnetically coupled thereto.
Dependencies are inferred from the claim text.