Steam turbine
US7402024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Sep 21, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2220/31
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A steam turbine (20), in particular for high pressure and/or intermediate pressure applications, has a rotor (11), which can rotate about an axis (23), an inner casing (14), which concentrically surrounds the rotor (11) at a distance, so as to form an annular passage (12) extending in the axial direction, and an outer casing (13), which concentrically surrounds the inner casing (14) at a distance so as to form an annular intermediate space (16) extending in the axial direction, blading including rotor blades (21) and guide vanes (22) being provided in the annular passage (12), and the annular passage (12), on the outlet side, being in communication with the intermediate space (16) in order for the steam to be passed on, and the inner casing (14) also being externally surrounded by a plurality of shrink rings (15), which are arranged one behind the other in the axial direction and project into the intermediate space (16). In a steam turbine of this type, the aerodynamics are improved by virtue of the fact that a device (24) is provided for leveling the finned structure produced by the shrink rings (15) on the outer side of the inner casing (14), in such a manner that the annular int…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.