Swirl interruption seal teeth for seal assembly
US9200528B2 · kind B2 · utility
6Cited by
18References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2012 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Oct 4, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A seal assembly for sealing between a rotating component and a stationary component in a turbomachine. The seal assembly includes a plurality of radially inwardly projecting, axially spaced teeth extending from the stationary component, wherein at least one of the plurality of teeth has at least one axially extending hole therethrough. Axial flow of an operating fluid through the holes acts as an air-curtain to interrupt swirl flow in a seal cavity, therefore reducing steam force that could act to destabilize rotordynamics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.