Stator end turn support system
AssigneeWestinghouse Electric Corp.
InventorsGeorge F. Dailey, Charles R. Ruffing, Leonard B. Simmonds
Life of this patent
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Abstract
An end turn support structure is disclosed which permits it to be constructed with varying, preselected coefficients of expansion along its length. This characteristic allows it to expand in a similar manner to the end turns which it supports. This structure also comprises conformable members and external support apparatus that provide a means for firmly attaching the end turns to the support structure and the support structure to the stator frame.
Claims20
A system for supporting end turns of a plurality of cylindrically configured stator coils, said system comprising:
- a first support member, said first support member being nonmagnetic, nonconducting and generally rigid, said first support member having a bore therethrough, said first support member having the shape of a frustum of a cone and having an inside surface, said end turns being disposed proximate and generally parallel to said inside surface, said first support member having a central axis and a first and a second axial end, said first support member being a filament wound structure with the filament wound about said first support member in a spiral helix manner, said filament being wound at a first preselected angle in the region of said first axial end and at a second preselected angle in the region of said second axial end, said inner surface having circumferentially running grooves therein;
- a conformable means for attaching said end turns to said inside surface;
- means for permitting relative motion between said end turns and said attaching means;
- and
- means for supporting said support member, said supporting means being disposed radially outward from said support member.
A coil end turn support structure, said support structure comprising:
- a nonmagnetic member having an inside surface, said inside surface describing a frustum of a cone having a central axis and a first and second axial end, said inside surface being proximate and generally parallel with said end turn, said nonmagnetic member comprising a filament, said filament being wound around said nonmagnetic member circumferential to said central axis, said filament describing a spiral helix having a plurality of turns, each of said turns describing a preselected angle to said central axis, said preselected angle varying as a function of its axial position along said central axis, and a conformable member disposed between said end turn and said inside surface.
Dependencies are inferred from the claim text.