Motor bearing for electric submersible motors
US9325216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2015 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/132
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A motor bearing for an electric submersible motor is described. An electric submersible motor includes a rotatable motor shaft extending longitudinally through a submersible motor, a bearing sleeve secured to the rotatable motor shaft in between two adjacent rotor sections, a motor bearing radially outward from the bearing sleeve and pressed against a stator bore, wherein the motor bearing comprises a series of magnets dispersed around an outer diameter of the motor bearing, and an insulation layer covering a surface of each magnet of the series of magnets, wherein the insulation layer faces the stator bore. A motor bearing includes a series of recessions dispersed around an outer axial surface of a motor bearing, a magnet inset in each recession of the series of recessions, and an insulation layer coating a surface of each of the magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.