Sealing arrangement between a shaft and a housing of a fluid flow engine
US4865332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Nov 4, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/929
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing arrangement between a shaft and a housing of a fluid flow engine consists of a blocking gas space acted upon with blocking gas, which is delimited by two sealing rings guided in annular grooves of the shaft and radially sealingly abutting at the shaft through-bore. In order to avoid operation-endangering wear of the sealing rings in case of failure of the blocking gas supply, the shaft through-bore is constructed with three diameter regions mutually offset by right angle steps. The steps form each an axial support for the coordinated sealing ring which comes into action when a permissive initial wear has occurred at the sealing ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.