Priscilla G Childers

US Patent:

7837429, Nov 23, 2010

Filed:

Jan 24, 2007

Appl. No.:

11/626481

Inventors:

Hua Zhang - Greer SC, US
Dean Erickson - Simpsonville SC, US
Michael Michalski - Simpsonville SC, US
Jason Seale - Simpsonville SC, US
Priscilla Childers - Greenville SC, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 25/12

US Classification:

415 1, 415 17, 415 47, 4151731, 415116, 415175

Abstract:

A system for controlling the clearance between a turbine blade and the turbine casing that includes an impingement cooling manifold attached to a turbine casing, a temperature sensing device for determining the temperature of the turbine casing, a blower, a control system logic for determining the setting temperature of the casing, and a controller for controlling the blower, wherein the blower forces air onto the impingement cooling manifold to cool the casing towards the setting temperature and control the clearance.

US Patent:

8240153, Aug 14, 2012

Filed:

May 14, 2008

Appl. No.:

12/120621

Inventors:

Priscilla Childers - Greenville SC, US
Mark Disch - Simpsonville SC, US
Curtis Newton, III - Powder Springs GA, US
Kenneth Neil Whaling - Simpsonville SC, US
Alan Meier Truesdale - Taylors SC, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 7/18
F02C 9/18

US Classification:

60782, 60785, 60795, 60806

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.

US Patent:

8286414, Oct 16, 2012

Filed:

Jun 1, 2009

Appl. No.:

12/457075

Inventors:

Brian Gallagher - Simpsonville SC, US
Ravi Praveen S. Eluripati - Simpsonville SC, US
Jonathan Carl Thatcher - Liberty SC, US
Priscilla Childers - Greenville SC, US
Bryan Edward Sweet - Valatie NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 7/22

US Classification:

60 39281, 60734, 60773

Abstract:

A system and method to reduce the gas fuel supply pressure requirements of a gas turbine, which results in an increased operability range and a reduction in gas turbine trips. According to the method, the gas turbine is allowed to start and operate at supply pressures determined as a function of ambient conditions and gas turbine compressor pressure ratio. This increases the operability window, and reduces or eliminates the need for gas fuel compressors.

US Patent:

20070186557, Aug 16, 2007

Filed:

Feb 15, 2006

Appl. No.:

11/353953

Inventors:

Brian Gallagher - Simpsonville SC, US
Ravi Praveen Eluripati - Simpsonville SC, US
Jonathan Thatcher - Liberty SC, US
Priscilla Childers - Greenville SC, US
Bryan Sweet - Valatie NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 9/26

US Classification:

060773000, 060039281

Abstract:

A system and method to reduce the gas fuel supply pressure requirements of a gas turbine, which results in an increased operability range and a reduction in gas turbine trips. According to the method, the gas turbine is allowed to start and operate at supply pressures determined as a function of ambient conditions and gas turbine compressor pressure ratio. This increases the operability window, and reduces or eliminates the need for gas fuel compressors.

US Patent:

20120023953, Feb 2, 2012

Filed:

Jul 27, 2010

Appl. No.:

12/844280

Inventors:

Stephen Robert Thomas - Simpsonville SC, US
Priscilla Graves Childers - Greenville SC, US
Vamsi Duraibabu - Greenville SC, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F02C 9/00

US Classification:

60772

Abstract:

Methods for controlling fuel splits to a combustor of a gas turbine are disclosed. The methods may include determining a combustion reference temperature of the gas turbine, measuring a biasing parameter of the gas turbine, determining at least one fuel split biasing value based on the combustion reference temperature and the biasing parameter and adjusting a nominal fuel split schedule based on the at least one fuel split biasing value.

US Patent:

20150121887, May 7, 2015

Filed:

Nov 4, 2013

Appl. No.:

14/071127

Inventors:

- Schenectady NY, US
Skigh Elliot Lewis - Pleasant Grove UT, US
Priscilla Graves Childers - Gray Court SC, US
David Leach - Simpsonville SC, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 9/32

US Classification:

60772, 60734

Abstract:

A method of controlling operability of a gas turbine during part-speed operation includes identifying that a combustion system of the gas turbine is operating at part-speed, the combustion system including a fuel source, fuel circuits and valves operably interposed between the fuel source and the fuel circuits, respectively, defining first and second boundaries based on first and second parameters and automatically controlling each of the valves to control fuel flow to each of the fuel circuits in accordance with the defined first and second boundaries.