Robert Norman Mcleod

US Patent:

6901761, Jun 7, 2005

Filed:

Feb 24, 2004

Appl. No.:

10/784207

Inventors:

Dalero Winston Berkeley - Greenville SC, US
Robert A. McLeod - Greenville SC, US
Michael Paul Black - Simpsonville SC, US
Doug Dean - Greer SC, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C007/22

US Classification:

60782, 60740, 60785

Abstract:

A pilot air system for providing pilot air to a combustor of a gas turbine wherein the system includes: an inlet to receive a portion of compressed air discharged by a compressor of the gas turbine, wherein the portion of the compressed air is pilot air; a main passageway coupled to the inlet and providing a passage for the pilot air; an inline throttling valve coupled to the main passageway and metering a pressure of the compressed air in the main passageway; a pilot air compressor in series with the main passageway; a by-pass passageway for the pilot air and arranged in parallel to the main passageway and compressor, wherein the by-pass passageway receives pilot air from the main passageway downstream of the compressor and passes a portion of the compressed pilot air to the main passageway upstream of the compressor; a by-pass throttling valve inline with the by-pass passageway to meter pilot air flowing through said by-pass passageway, and the main passageway is connectable to the combustor.

US Patent:

6907738, Jun 21, 2005

Filed:

Apr 19, 2004

Appl. No.:

10/826353

Inventors:

Dalero Winston Berkeley - Greenville SC, US
Robert A. McLeod - Greenville SC, US
Michael Paul Black - Simpsonville SC, US
Doug Dean - Greer SC, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C007/22

US Classification:

60785, 60740, 60796

Abstract:

A pilot air system for a combustor of a gas turbine including: a pilot air compressor having inlet connectable to in to a main passageway, wherein the main passageway receives compressed air from a compressor for the gas turbine; a pilot air platform positioned adjacent to the combustor of the gas turbine, wherein the pilot air compressor is positioned on the platform; an inline throttling valve coupled to the first main passageway; a by-pass passageway for the pilot air, proximate to the platform, and arranged in parallel to the main passageway and compressor, wherein the by-pass passageway receives pilot air from the main passageway downstream of the pilot air compressor and passes a portion of the compressed pilot air to the main passageway upstream of the pilot air compressor; a by-pass throttling valve inline with the by-pass passageway to meter pilot air flowing through the by-pass passageway, and the main passageway having an outlet connectable to the combustor.

US Patent:

20170138922, May 18, 2017

Filed:

Jan 30, 2017

Appl. No.:

15/418847

Inventors:

- Schenectady NY, US
Michael Garry - Greenville SC, US
John Mihok - Schenectady NY, US
Robert Mcleod - Fair Play SC, US

International Classification:

G01N 33/28
G01N 27/02
G01M 13/02

Abstract:

A system includes a resonant sensor in contact with oil within a gearbox of a rotor system, such as a wind turbine, and one or more processors. The sensor includes electrodes and a sensing circuit that generates electrical stimuli having frequencies applied to the oil at different times during a life of the gearbox. The processors receive electrical signals from the resonant sensor representative of impedance responses of the oil to the electrical stimuli. The processors analyze the impedance responses and determine a concentration of a polar analyte in the oil at different times. The processors calculate a degradation value for the gearbox based on the concentration of the polar analyte. Responsive to the degradation value exceeding a designated threshold, the processors at least one of schedule maintenance for the rotor system, provide an alert to schedule maintenance, or prohibit operation of the rotor system until maintenance is performed.