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:
Jan. 30, 1996
Filed:
Apr. 08, 1994
Anil Gulati, Albany, NY (US);
Richard E Warren, Jr, Schenectady, NY (US);
Eayre B Voorhees, Sloansville, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
Combustion-induced unsteady oscillations referred to as screech are suppressed in gas turbine combustors by a plurality (preferably two to six) of screech suppression members disposed in the premixers of the combustors. The screech suppression members are attached to the centerbody of the premixer and extend radially outward, nearly into contact with the inner surface of the premixer tube. The screech suppression members are uniformly spaced about the centerbody and are axially positioned at or near the end of the centerbody which is closest to the main combustion chamber. Alternatively, each screech suppression member can be attached to the inner surface of the premixer tube and extend radially inward nearly into contact with the centerbody. Possible shapes of the screech suppression members include a thick block, a thin rectangular plate, a triangular plate, a V-shaped member, and a cylindrical bar.