The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2008
Filed:
Feb. 06, 2006
Davor Kriz, Baden, CH;
Peter John Walker, Stetten, CH;
Davor Kriz, Baden, CH;
Peter John Walker, Stetten, CH;
ALSTOM Technology Ltd., Baden, CH;
Abstract
A steam turbine (), in particular for high pressure and/or intermediate pressure applications, has a rotor (), which can rotate about an axis (), an inner casing (), which concentrically surrounds the rotor () at a distance, so as to form an annular passage () extending in the axial direction, and an outer casing (), which concentrically surrounds the inner casing () at a distance so as to form an annular intermediate space () extending in the axial direction, blading including rotor blades () and guide vanes () being provided in the annular passage (), and the annular passage (), on the outlet side, being in communication with the intermediate space () in order for the steam to be passed on, and the inner casing () also being externally surrounded by a plurality of shrink rings (), which are arranged one behind the other in the axial direction and project into the intermediate space (). In a steam turbine of this type, the aerodynamics are improved by virtue of the fact that a device () is provided for leveling the finned structure produced by the shrink rings () on the outer side of the inner casing (), in such a manner that the annular intermediate space () is delimited on the inner side by a continuously smooth inner surface which is favorable in terms of fluid dynamics.