Bearing arrangement for a turbine rotor of a drill string turbine
US8109721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2008 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Dec 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/903
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A bearing arrangement for a turbine rotor of a turbine is adapted to be mounted in a drill string and to be driven by the flow of drilling fluid. The bearing arrangement includes a turbine chamber surrounding the turbine rotor and having an inflow and an outflow, a stator on which the turbine rotor is rotatably mounted, and a cavity formed between the turbine rotor and the stator and accommodating at least one radial plain bearing and being separated from the turbine chamber by an axial plain bearing constructed as a bearing ring seal and by a conveyor screw which is disposed on the turbine rotor and operates to convey from the cavity to the turbine chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.