Pressurized seal system for a power turbine unit
US9932848B2 · kind B2 · utility
1Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2012 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Aug 8, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C6/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A power turbine unit includes a turbine housing, an exhaust duct, a turbine wheel with blades positioned in the exhaust duct, a shaft rigidly connected to the turbine wheel and rotatably supported in the housing, and an oil sealing system. The oil sealing system includes a sealing arrangement positioned in the vicinity of the turbine wheel for preventing oil from escaping from the turbine housing along the shaft to the exhaust duct. The oil sealing system further includes a buffer gas duct that is arranged to supply exhaust gas from the exhaust duct to the sealing arrangement for pressurizing the sealing arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.