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:
Jun. 27, 2006
Filed:
Mar. 05, 2004
Valter Bellucci, Fislisbach, CH;
Jonas Hurter, Baden, CH;
Joerg Pross, Albbruck, DE;
ALSTOM Technology Ltd., Baden, CH;
Abstract
Combustion driven pressure pulsations may limit the range of operating conditions where a modern gas turbine can operate with low emission and high efficiency performance. The control of acoustic vibrations has been consequently growing as an essential issue in gas turbine design, development and maintenance. The basic idea of the present invention is to use cooling air leakage through the gaps () of combustor liner segments () to get acoustic damping of combustion pulsations. The main component of the design is the sealing device () which covers the gap () between the two liner segments () and (). The sealing device () collects in the plenum () some of the cooling air () flowing between the outer casing () and the inner liner structure (). For this purpose the sealing device () is provided with openings () along the side walls () which allow the cooling air () to enter the plenum (). In the plenum () the cooling air () is distributed along the gap () and discharged through openings (), distributed along the top side () of the sealing device (). The jets () discharged through the openings () achieve the additional effect to dampen acoustic pulsations in the combustion chamber ().