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US 12,228,171 B2Granted
ESP motor radial bearing anti-rotation tab retention
AssigneeHalliburton Energy Services, Inc.
InventorAndrás Bencze
Life of this patent
Estimating the term…
Abstract
Rotor bearings for ESP motors can include anti-rotation tabs configured to engage with a stator during assembly of the ESP motor. Prior to insertion of the rotor bearing within the stator, the anti-rotation tabs may be held in place within axial slots in the outer surface of a bearing bushing of the rotor bearing using retention rings. The retention rings and the bearing bushing may be configured to allow for interference fit.
Claims20
A rotor bearing bushing assembly, comprising:
- a substantially cylindrical bearing bushing comprising:
- a spring recess extending inward from an outer surface of the bearing bushing;
- an axial slot on the outer surface of the bearing bushing, wherein the axial slot intersects the spring recess;
- and
- an inwardly stepped portion of the outer surface;
- an anti-rotation tab configured to fit and extend axially in the axial slot, the anti-rotation tab being radially slidable within the axial slot;
- a biasing element configured to fit in the spring recess and to push radially outward on the anti-rotation tab in the axial slot;
- and
- a retention ring configured for interference fit on the outer surface of the stepped portion on the outer surface of the bearing bushing;
- wherein:
- the retention ring overlaps the axial slot and the anti-rotation tab;
- and
- the retention ring is a solid ring, spanning a full circumference of the bearing bushing.
10 more elements
A method for assembling a bearing bushing assembly, comprising:
- installing a biasing element into a corresponding spring recess extending inward from an outer surface of a bearing bushing;
- installing an anti-rotation tab in an axial slot on the outer surface of the bearing bushing, thereby compressing the biasing element so that the anti-rotation tab is approximately flush with the outer surface of the bearing bushing;
- and
- thermally fitting a retention ring onto an inwardly stepped portion of the outer surface of the bearing bushing, wherein the retention ring holds the anti-rotation tab onto the bearing bushing.
1 more element
Dependencies are inferred from the claim text.