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:
Jan. 07, 1997
Filed:
Aug. 01, 1995
Francisco J Cunha, Schenectady, NY (US);
Alan Walker, Niskayuna, NY (US);
General Electric Co., Schenectady, NY (US);
Abstract
The nozzle segment includes a vane having a plurality of axially spaced cavities for transmission of a cooling medium. In a closed circuit cooling system, air is transmitted radially inwardly and outwardly through inserts in leading and intermediate cavities, respectively, for flow through holes for impingement cooling of the adjoining vane surfaces. Radial inlet flow of cooling medium to an aft cavity likewise flows through an insert for impingement cooling of the aft cavity walls. The cooling medium flows from the aft cavity into a trailing edge cavity for impingement cooling of the trailing edge. The spent cooling flow passes through a channel in the diaphragm into the wheelspace. In the open air circuit, the spent impingement flow in the leading and intermediate cavities passes through openings in the vane wall for thin film cooling of the vane. An insert is received in the trailing edge cavity for impingement cooling of the trailing edge walls and flow towards the trailing edge on opposite sides of a tongue for turbulent flow through a multiplicity of openings through the trailing edge into the hot gas stream.