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:
Aug. 14, 2012
Filed:
May. 14, 2008
Priscilla Childers, Greenville, SC (US);
Mark Disch, Simpsonville, SC (US);
Curtis Newton, Iii, Powder Springs, GA (US);
David Wesley Ball, Jr., Easley, SC (US);
Kenneth Neil Whaling, Simpsonville, SC (US);
Alan Meier Truesdale, Taylors, SC (US);
Priscilla Childers, Greenville, SC (US);
Mark Disch, Simpsonville, SC (US);
Curtis Newton, III, Powder Springs, GA (US);
David Wesley Ball, Jr., Easley, SC (US);
Kenneth Neil Whaling, Simpsonville, SC (US);
Alan Meier Truesdale, Taylors, SC (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for controlling the generation of turbine cooling air from air extracted from a compressor of a gas turbine including: extracting compressed air from a low pressure and a high pressure stage of the compressor; adding in an ejector the compressed air from the low pressure stage to the air from the high pressure stage and discharging the combined air as turbine cooling air; bypassing the ejector with a bypass portion of the extracted compressed air from the high pressure stage; in response to turning on the flow of extracted compressed air from the low pressure stage, changing a set point for an actual pressure ratio that includes a pressure of the turbine cooling air, and adjusting the bypass flow in response to the changed set point to cause the actual pressure ratio to approach the changed set point.