Steam turbine bell seals
US5484260A · kind A · utility
5Cited by
5References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 8, 1995 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Jun 8, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D25/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved bell seal arrangement for steam turbines wherein the bell seal is modified by the addition of a special, replaceable, cylindrical extension seal for sealing the leakage gap between the bell seal and the turbine inner shell, the extension seal being threadably attached and secured to the modified bell seal to insure against vibration, and when wear or damage occurs to the extension seal surface, being replaceable without requiring complete removal or replacement of the modified, existing bell seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.