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:
Oct. 02, 2012
Filed:
Jun. 08, 2009
Konrad Stadler, Niederweningen, CH;
Andreas Poncet, Grandvaux, CH;
Thomas Von Hoff, Niederrohrdorf, CH;
Konrad Stadler, Niederweningen, CH;
Andreas Poncet, Grandvaux, CH;
Thomas Von Hoff, Niederrohrdorf, CH;
ABB Research Ltd, Zurich, CH;
Abstract
For monitoring (unmeasured) process states of a rotating machine having a combustion chamber (e.g. a gas turbine), compositions of educts entering the combustion chamber are measured. Based on the compositions of the educts, the composition of the product produced by the combustion chamber can be determined. Moreover, the mechanical power (P) generated by the rotating machine can be determined. Based on the mechanical power (P), the composition of the educts and product, and stoichiometric relationships of educts and product, the values of process states, such as the air mass flow (w) through the compressor leading into the combustion chamber and/or the gas mass flow (w), the composition and/or the temperature (T) of exhaust gas exiting the combustion chamber can be determined. Based on precise measurements of the educt (e.g. the composition of air and fuel in the combustion process), the product (i.e. the composition of the exhaust gas and its temperature) is derived and, without the need of an iterative or recursive method, the turbine inlet temperature (T) can be monitored and controlled.