High temperature face seal
US11371521B2 · kind B2 · utility
2Cited by
30References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2019 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Jun 1, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/55
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbomachine face seal includes a turbine wheel with a cylindrical shaft extending from the turbine wheel, defining an axis of rotation. The shaft may include a heat throttle, such as a piston ring and groove assembly, or a shaft weld pocket having an annular heat choke groove. Circumscribing the shaft is a casing and a seal ring having a groove with a seal element. To cool the seal element, a pressurized oil jet is directed toward the casing, and impinges against the casing. The oil jet may be angled or parallel with the axis of rotation. The casing may be configured to trap oil from the oil jet to cool the seal element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.