Turbo-machine sealing device
US5129782A · kind A · utility
6Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jun 19, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/914
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sealing device has two circumferentially fixed sealing rings which, together with a common ring groove in a turbo-machine shaft for both sealing rings, result in a labyrinth seal between the sealing gas space and the lubricating-oil relief space and between the sealing gas space and the rotor disk space. In the event of a disturbance of the sealing gas supply, both sealing rings are supported at a gradation of a shaft lead-through bore which prevents a total wearing-out of the sealing rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.