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, 2014
Filed:
Sep. 12, 2012
Mauricio Garay, Las Heras Mendoza, AR;
Gianfranco Guidati, Zurich, CH;
Stanka Kokanovic, Baden, CH;
Stephan Torchalla, Kastl, DE;
Mauricio Garay, Las Heras Mendoza, AR;
Gianfranco Guidati, Zurich, CH;
Stanka Kokanovic, Baden, CH;
Stephan Torchalla, Kastl, DE;
Alstom Technology Ltd, Baden, CH;
Abstract
A method for operating a firing plant with at least one combustion chamber and at least one burner, especially a gas turbine, includes an operating characteristic for operating the combustion chamber close to the lean extinction limit defined as a burner group staging ratio (BGV). Pressure pulsations (Puls) measured in the combustion chamber are processed by a filter device () and converted into corresponding signals (Puls(t)). An exceeding/falling short of at least one pulsation limiting value (Puls) is monitored by a monitoring device () and adapts a pulsation reference value (Puls) in dependence upon the monitoring. The processed pressure pulsations (Puls(t)) are then compared with the adapted pulsation reference value (Puls), and, from this, a correction value ΔBGV is determined, by which the burner group staging ratio (BGV) is corrected, and as a result operation of the firing plant close to the lean extinction limit is realized.