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. 23, 2005
Filed:
Dec. 17, 2003
Peter L. Morgan, Tempe, AZ (US);
William J. Howe, Chandler, AZ (US);
Mark C. Morris, Phoenix, AZ (US);
Adrian R. Allan, Chandler, AZ (US);
Donald L. Palmer, Cave Creek, AZ (US);
Peter L. Morgan, Tempe, AZ (US);
William J. Howe, Chandler, AZ (US);
Mark C. Morris, Phoenix, AZ (US);
Adrian R. Allan, Chandler, AZ (US);
Donald L. Palmer, Cave Creek, AZ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Cooling air to the blades and disks of a gas turbine may be modulated to provide a variable turbine cooling flow. A bellows may be extended by providing a high pressure compressor discharge flow to an interior of the bellows. The bellows may be compressed when the interior of the bellows communicates with ambient pressure air. The extension/compression of the bellows moves an arm over orifices in a cooling air flow path. The pressure inside of the bellows is metered to move the arm over at least one orifice, thereby restricting cooling air flow when the engine is running at low power. The pressure inside of the bellows is metered to move the arm to uncover all of the slots to provide maximum cooling flow when the engine is running at high power. The resulting variable cooling flow system results in less need for cooling air at low powers, thus reducing engine fuel consumption.