Fei N Han

US Patent:

6813925, Nov 9, 2004

Filed:

Jun 5, 2002

Appl. No.:

10/161702

Inventors:

Robert Naumiec - Clifton Park NY
Walter Smith - Ballston Spa NY
Fei Han - Schenectady NY
Eamon Gleeson - Atlanta GA
Robert A. Hedeen - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01L 2700

US Classification:

73 166

Abstract:

In one embodiment, the invention is a pressure sensor calibration system comprising a pressure chamber in fluid communication with a pressure sensor to be calibrated, the chamber is pressurized to a static pressure level. An oscillating surface on a wall of the chamber imparts a rapid pressure fluctuation in the static pressure level of the chamber. These rapid pressure fluctuations in a high-static pressure level chamber are used to calibrate the pressure sensor.

US Patent:

6840048, Jan 11, 2005

Filed:

Sep 26, 2002

Appl. No.:

10/255114

Inventors:

Fei Han - Schenectady NY, US
Osman Saim Dinc - Troy NY, US
Sung Jin Kim - Guilderland NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

F02C 314
F02C 724

US Classification:

60772, 60 3937, 60725

Abstract:

Respective combustion gas streams are generated in a can combustor. The streams are channeled downstream into an annular turbine nozzle. And, dynamic interaction of circumferentially adjacent combustion gas streams is suppressed axially between the cans and the nozzle.

US Patent:

6848319, Feb 1, 2005

Filed:

Jan 7, 2004

Appl. No.:

10/751929

Inventors:

Eamon P. Gleeson - Atlanta GA, US
Fei Han - Schenectady NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01L 700

US Classification:

73756

Abstract:

A dynamic pressure probe includes a holder body having a first passage therein adapted to receive a pressure signal, a pressure sensor including at least a pressure sensing portion located within a sleeve seated within a pressure sensor housing portion, the sleeve engaged with a wall of the housing portion; the pressure sensor including a diaphragm having one face exposed to a pressure chamber within the sleeve between the pressure sensor and the wall; wherein an aperture in the wall of the housing connects the pressure chamber to the first passage; and wherein the first passage continues axially beyond the aperture in a flow direction an acoustic damping coil wound about a vertical axis.

US Patent:

6857320, Feb 22, 2005

Filed:

Nov 21, 2001

Appl. No.:

09/989102

Inventors:

Eamon P. Gleeson - Atlanta GA, US
Fei Han - Schenectady NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01L007/00

US Classification:

73756

Abstract:

A dynamic pressure probe for a combustor comprising a holder body having a pressure sensing passage; a pressure sensor and a pressure chamber located in a housing portion arranged substantially perpendicularly to the pressure sensing passage; and wherein the pressure chamber communicates with the pressure sensing passage via a relatively small aperture in a wall separating the pressure chamber from the pressure sensing passage.

US Patent:

6978680, Dec 27, 2005

Filed:

Feb 27, 2003

Appl. No.:

10/374719

Inventors:

Eamon P. Gleeson - Atlanta GA, US
Walter John Smith - Baliston Spa NY, US
Robert John Naumiec - Clifton Park NY, US
Fei Han - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01L007/00

US Classification:

73756, 73 171

Abstract:

A component adapted to transmit a dynamic pressure signal from a high temperature environment to a location where it can be measured without causing significant attenuation of the signal. In particular, the component provides for a dynamic pressure signal transmission in the manner that will not result in the formation of condensation in the measurement system and thus eliminates the need to periodically purge condensate from the system.

US Patent:

6979118, Dec 27, 2005

Filed:

Jun 1, 2004

Appl. No.:

10/856773

Inventors:

Warren James Mick - Altamont NY, US
Eamon P. Gleeson - Atlanta GA, US
Willy Steve Ziminsky - Simpsonville SC, US
Aparna Basker - Alpharetta GA, US
Fei Han - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01K011/026

US Classification:

374117, 73579, 60803, 60 3924

Abstract:

A method of determining the temperature inside a combustion liner without making a direct measurement of the actual temperature. The technique is based on a measurement of the frequency of one of the transverse acoustic modes occurring inside the combustion chamber. The frequency is determined from the transverse geometric dimensions of the combustion chamber and the speed of sound in the gas inside the combustion chamber. The speed of sound in the gas is known from thermodynamics to be a function of gas temperature and gas properties. Thus, from a measurement of the resonant frequency and knowing the combustor dimensions and gas properties, the temperature can be determined with accuracy.

US Patent:

7441411, Oct 28, 2008

Filed:

Sep 16, 2005

Appl. No.:

11/229168

Inventors:

Eamon Patrick Gleeson - Atlanta GA, US
Warren James Mick - Altamont NY, US
George Edward Williams - Niskayuna NY, US
Fei Han - Clifton Park NY, US
Shivakumar Srinivasan - Greer SC, US
Scott Alan Kopcho - Atlanta GA, US
Ilan Leibu - Marietta GA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02M 35/00

US Classification:

60779, 60 39091

Abstract:

A method for determining when a combustor is experiencing hardware damage includes sensing acoustic vibrations of a plurality of combustor cans, determining a center frequency for each acoustic tone of the sensed acoustic vibrations within a predetermined frequency range, and indicating an alarm when a center frequency of one or more of the combustor cans changes in a different manner compared to a representative center frequency of the plurality of combustor cans.

US Patent:

7461509, Dec 9, 2008

Filed:

May 6, 2005

Appl. No.:

10/908309

Inventors:

Warren James Mick - Altamont NY, US
George Edward Williams - Niskayuna NY, US
Fei Han - Clifton Park NY, US
Eamon Patrick Gleeson - Atlanta GA, US
Shiva Srinivasan - Greer SC, US
Scott Alan Kopcho - Atlanta GA, US
Ilan Leibu - Marietta GA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 7/00

US Classification:

60779

Abstract:

A method for determining a lean blow out condition for a combustor. In an exemplary embodiment, the method includes determining acoustical frequency data for the combustor, determining a combustor flame temperature based on the acoustical frequency data, determining an existing fuel/air ratio in the combustor based on the combustor flame temperature, and comparing the existing fuel/ratio to a lean blow out fuel/air ratio. A lean blow out condition for the combustor is indicated when the existing fuel/air ratio is about equal to the lean blow out fuel/air ratio.