Envelope forged stationary blade for L-2C row
US5192190A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1992 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | May 8, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/301
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A stationary blade for a steam turbine includes an airfoil portion having an inner diameter end and an outer diameter end; an inner ring portion integrally formed at the inner diameter end of the airfoil portion; and an outer ring portion integrally formed at the outer diameter end of the airfoil portion, the airfoil, inner ring and outer ring portions being envelope forged from a single bar stock, and each blade being welded together with an adjacent, substantially identical blade with welds provided at the inner and outer ring portions, the inner ring portion welds comprising a first, upstream weld and a second, downstream weld which is lower than the upstream weld.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.