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:
Feb. 28, 2006
Filed:
Sep. 26, 2003
Applicants:
Matthew J. Mchale, Oviedo, FL (US);
Lewis Gray, Winter Springs, FL (US);
Inventors:
Matthew J. McHale, Oviedo, FL (US);
Lewis Gray, Winter Springs, FL (US);
Assignee:
Siemens Westinghouse Power Corporation, Orlando, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/44 (2006.01); F16J 15/447 (2006.01); F04D 29/66 (2006.01); F04D 29/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for reducing steam swirl in a steam turbine. A plurality of seal segments () are circumferentially juxtaposed to form a seal ring () encircling the turbine shaft (), each seal segment () supporting a plurality of circumferentially disposed annular seal fins () to limit axial steam flow along the shaft (). A plurality of flow dams () are disposed within grooves () defined in the plurality of seal fins () and seal segments () for limiting circumferential steam flow and thereby reducing rotor instability.