Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps
US7665954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/907
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electrical submersible pump runner having a core layer and a wear layer affixed to the core layer. One embodiment of the invention provides an electrical submersible pump that includes a motor section and a centrifugal pump section. A seal section and rotary gas separator may also be included. The pump is powered by an electric cable that connects the pump, located in a bore hole, to a power source on the surface. A thrust runner coated with a wear layer (e.g., polymer) is provided in the motor and/or seal section to reduce bearing temperature, provide longer bearing life, reduce costs, and facilitate overhaul. The runner may also function as a rotating up-thrust bearing when the runner is coated with a wear layer on one side that is formed with a bearing geometry. In this case, the up-thrust bearing may be eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.