Jason B Shaffer

US Patent:

20170342902, Nov 30, 2017

Filed:

May 27, 2016

Appl. No.:

15/167307

Inventors:

- Schenectady NY, US
Jason Brian Shaffer - Tempe AZ, US
Joseph Philip Klosinski - Kennesaw GA, US
Sanji Ekanayake - Mableton GA, US

International Classification:

F02C 7/08
F01D 21/00
F02C 7/057
F04D 29/56
F01D 5/06
F02C 9/18
F04D 29/52
F01D 25/24

Abstract:

A system includes a compressor having a compressor inlet, a turbine having a plurality of stages disposed within a turbine casing, and a turbine extraction gas (TEG) heating system. The turbine is configured to drive the compressor via expansion of combustion products through the plurality of stages. The TEG heating system includes a turbine gas extraction system coupled to the turbine casing and to the compressor inlet. The turbine gas extraction system is configured to receive a portion of the combustion products as a turbine extraction gas (TEG) from the turbine. The TEG is received through the turbine casing, the TEG heating system is configured to supply a heated flow to the compressor inlet, and the heated flow includes the TEG.

US Patent:

20170342903, Nov 30, 2017

Filed:

May 27, 2016

Appl. No.:

15/167328

Inventors:

- Schenectady NY, US
Jason Brian Shaffer - Tempe AZ, US
Joseph Philip Klosinski - Kennesaw GA, US
Sanji Ekanayake - Mableton GA, US

International Classification:

F02C 7/08

Abstract:

A system includes a controller configured to control a heated flow discharged from an outlet of a mixing chamber to an inlet control system to control a temperature of an intake flow through a compressor inlet of a compressor of a gas turbine system. The controller is configured to control a turbine extraction gas (TEG) flow to the mixing chamber. The controller is configured to control at least one of a pressurized flow of the compressor to the mixing chamber and a steam flow to the mixing chamber. The TEG flow is extracted through a turbine casing. The heated flow includes the TEG flow and the at least one of the pressurized flow and the steam flow.

US Patent:

20170167376, Jun 15, 2017

Filed:

Dec 15, 2015

Appl. No.:

14/969067

Inventors:

- Schenectady NY, US
Michael Anthony Cocca - Atlanta GA, US
Alston Ilford Scipio - Mableton GA, US
Sanji Ekanayake - Mableton GA, US
Jason Brian Shaffer - Smyrna GA, US

International Classification:

F02C 6/06
F01D 25/30
H02K 7/18
F02C 6/18
F02C 3/04

Abstract:

A power plant includes a turbine having a plurality of turbine stages and an extraction port in fluid communication with one or more of the turbine stages. The extraction port provides a flow path for a stream of combustion gas to flow out of the turbine. An exhaust duct is disposed downstream from the turbine and receives exhaust gas from the turbine. The exhaust duct is fluid communication with the extraction port. A coolant injection system injects a coolant into the stream of combustion gas to provide cooled combustion gas to the exhaust duct. The cooled combustion gas flows into the exhaust duct at a temperature that is higher than a temperature of the exhaust gas, thereby increasing the temperature of the exhaust gas within the exhaust duct. The increase in thermal energy may be used to produce steam downstream from the exhaust duct.

US Patent:

20170167379, Jun 15, 2017

Filed:

Dec 15, 2015

Appl. No.:

14/969142

Inventors:

- Schenectady NY, US
Sanji Ekanayake - Mableton GA, US
Jason Brian Shaffer - Smyrna GA, US
Joseph Philip Klosinski - Kennesaw GA, US
George Vargese Mathai - Atlanta GA, US

International Classification:

F02C 6/08
F01D 25/30
H02K 7/18
F02C 6/18
F02C 3/04

Abstract:

A power plant includes a compressor, a combustor downstream from the compressor and a turbine disposed downstream from the combustor. The compressor includes a compressor extraction port. The turbine includes a turbine extraction port that is in fluid communication with a hot gas path of the turbine and which provides a flow path for a stream of combustion gas to flow out of the turbine. An exhaust duct is disposed downstream from the turbine and receives exhaust gas from the turbine. A static mixer coupled to the turbine extraction port and to the compressor extraction port cools the stream of combustion gas upstream from the exhaust duct. The cooled combustion gas flows into the exhaust duct at a higher temperature than the exhaust gas and mixes with the exhaust gas within the exhaust duct to provide a heated exhaust gas mixture to a heat exchanger downstream from the exhaust duct.

US Patent:

20150322866, Nov 12, 2015

Filed:

May 12, 2014

Appl. No.:

14/274885

Inventors:

- Schenectady NY, US
Robert Frank Hoskin - Atlanta GA, US
Jason Brian Shaffer - Atlanta GA, US
Sanji Ekanayake - Atlanta GA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 9/18
F02C 7/18

Abstract:

The present application provides a gas turbine engine for low turndown operations. The gas turbine engine may include a compressor with a compressor bleed air flow, a turbine compartment with a turbine compartment air flow, a turbine, and an eductor. The eductor blends the compressor bleed air flow and the turbine compartment air flow into a blended air flow for use in cooling the turbine.