Theresa A Brown

US Patent:

56347669, Jun 3, 1997

Filed:

Mar 31, 1995

Appl. No.:

8/414697

Inventors:

Francisco J. Cunha - Schenectady NY
David A. DeAngelis - Voorheesville NY
Theresa A. Brown - Clifton Park NY
Sanjay Chopra - Albany NY
Victor H. S. Correia - New Labanon NY
Daniel R. Predmore - Clifton Park NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F01D 904
F01D 906

US Classification:

415115

Abstract:

Turbine stator vane segments have inner and outer walls with vanes extending therebetween. The inner and outer walls are compartmentalized and have impingement plates. Steam flowing into the outer wall passes through the impingement plate for impingement cooling of the outer wall surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. The trailing edge is air-cooled.

US Patent:

57437084, Apr 28, 1998

Filed:

Jul 2, 1996

Appl. No.:

8/674476

Inventors:

Francisco J. Cunha - Schenectady NY
David A. DeAngelis - Voorheesville NY
Theresa A. Brown - Clifton Park NY
Sanjay Chopra - Albany NY
Victor H. S. Correia - New Lebanon NY
Daniel R. Predmore - Clifton Park NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F01D 904
F01D 906

US Classification:

415115

Abstract:

Turbine stator vane segments have inner and outer walls with vanes extending therebetween. The inner and outer walls are compartmentalized and have impingement plates. Steam flowing into the outer wall passes through the impingement plate for impingement cooling of the outer wall surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. The trailing edge is air-cooled.

US Patent:

53910524, Feb 21, 1995

Filed:

Nov 16, 1993

Appl. No.:

8/152363

Inventors:

Victor H. Correia - Scotia NY
Theresa A. Brown - Ballston Lake NY
R. Paul Chiu - Scotia NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F01D 2512

US Classification:

415115

Abstract:

The steam impingement cooling and retrieval system for turbine shrouds includes a plurality of circumferentially spaced housings about a turbine shroud, each housing being divided by an impingement plate defining first and second chambers on opposite sides of the housing. Steam supplied into a first chamber passes through a plurality of apertures formed in the impingement plate into the second chamber for impingement cooling of the shroud surface forming the opposite wall of the housing. Post-impingement steam passes from the compartment into a manifold for flow through and exhaust passage. In one form, a plurality of compartments are formed in the impingement plate. A first set of the plurality of compartments include through apertures for delivering steam from the first chamber into the second chamber. The second set of compartments communicates only with the second chamber and an exhaust passage whereby post-impingement steam passes from the second chamber through apertures of the impingement plate into the second set of compartments for flow to a manifold at the end wall of the housing for delivery to the exhaust passage.

US Patent:

57137226, Feb 3, 1998

Filed:

Jun 20, 1996

Appl. No.:

8/667157

Inventors:

Victor H. Correia - New Lebanon NY
Theresa A. Brown - Clifton Park NY
Daniel R. Predmore - Clifton Park NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F01D 514

US Classification:

416241R

Abstract:

In a method of investment casting a turbine nozzle which includes an outer band, an inner band and an airfoil section extending between the inner and outer bands, an improvement including shaping a temporary wax form, and external shell and internal core components used in casting such that during pouring of molten metal into a space created by removal of the wax form, shell material lies on opposite sides of an outer fillet connecting the outer band to the airfoil section. The resulting gas turbine nozzle includes first and second horizontally oriented ribs extending about interior peripheries of the airfoil section vertically adjacent the outer and inner band fillets.

US Patent:

56621604, Sep 2, 1997

Filed:

Oct 12, 1995

Appl. No.:

8/542001

Inventors:

Victor H. Correia - New Lebanon NY
Theresa A. Brown - Clifton Park NY
Daniel R. Predmore - Clifton Park NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

B22C 900
B22C 902
B22C 700

US Classification:

164516

Abstract:

In a method of investment casting a turbine nozzle which includes an outer band, an inner band and an airfoil section extending between the inner and outer bands, an improvement including shaping a temporary wax form, and external shell and internal core components used in casting such that during pouring of molten metal into a space created by removal of the wax form, shell material lies on opposite sides of an outer fillet connecting the outer band to the airfoil section. The resulting gas turbine nozzle includes first and second horizontally oriented ribs extending about interior peripheries of the airfoil section vertically adjacent the outer and inner band fillets.