Brush seal for use on rough rotating surfaces
US5961125A · kind A · utility
13Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Oct 2, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/56
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A brush seal which, among other applications, may be used for sealing a steam leakage gap between the shrouded free end of steam-turbine buckets (blades) of a steam-turbine rotor and a circumferentially surrounding steam-turbine stator. In a first embodiment, the brush seal includes first and second bristle packets having, respectively, first and second bristles, wherein the second bristles are more abrasive than the first bristles. In a second embodiment, the brush seal includes a bristle packet having bristles which are more abrasive proximate their free ends than not proximate their free ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.