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. 06, 1993
Filed:
Apr. 17, 1992
Frederick M Schwarz, Glastonbury, CT (US);
David J Candelori, Glastonbury, CT (US);
Richard D Brooke, Manchester, CT (US);
Other;
Abstract
Cooling air to the 1-2 turbine stage seal is supplied in parallel with air to the second vane from a plenum. A modulatable valve in the supply line to the plenum regulates air flow in response to a sensed temperature in the 1-2 seal area at high sensed speeds. Valve and thermocouples are checked for proper operation. Immediate alerts and maintenance messages are established along with fail safe operating conditions upon fault detection. Over cooling of the seal area during low power operation, in anticipation of a power increase, is used to improve low cycle fatigue life of the turbine disk and seal runner.