Multifrequency control stage for improved dampening of excitation factors
US8333555B2 · kind B2 · utility
0Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2009 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Jun 21, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/96
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exemplary control stage of a steam turbine is disclosed, which includes plural staging valves circumferentially distributed around the turbine for regulating steam admission flow so as to control the loading of the turbine. Nozzle chambers are connected to a downstream end of each staging valve. An arc of admission forms the downstream portion of each nozzle chamber, and control stage nozzles in the arcs of admission define the downstream end of the nozzle chamber. Each nozzle chamber has at least two arcs of admission, each with a different circumferential dimension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.