Yan Chen

US Patent:

6935116, Aug 30, 2005

Filed:

Apr 28, 2003

Appl. No.:

10/424350

Inventors:

Peter J. Stuttaford - Jupiter FL, US
Stephen Jennings - Palm City FL, US
Andrew Green - Jupiter FL, US
Ryan McMahon - North Palm Beach FL, US
Yan Chen - Palm Beach Gardens FL, US
Hany Rizkalla - Stuart FL, US
John Carella - Jupiter FL, US
Vamsi Duraibabu - Jupiter FL, US
Martin Spalding - Jupiter FL, US

Assignee:

Power Systems Mfg., LLC - Jupiter FL

International Classification:

F02C003/00
F02C007/22
F23R003/14
F23R003/54

US Classification:

60737, 60746, 60747, 60748, 60760

Abstract:

A gas turbine combustion system having reduced emissions and improved flame stability at multiple load conditions is disclosed. The improved combustion system accomplishes this through complete premixing, a plurality of fuel injector locations, combustor geometry, and precise three dimensional staging between fuel injectors. Axial, radial, and circumferential fuel staging is utilized including fuel injection proximate air swirlers. Furthermore, strong recirculation zones are established proximate the introduction of fuel and air premixture from different stages to the combustion zone. The combination of the strong recirculation zones, efficient premixing, and staged fuel flow thereby provide the opportunity to produce low emissions combustion at various load conditions.

US Patent:

6986254, Jan 17, 2006

Filed:

May 14, 2003

Appl. No.:

10/437748

Inventors:

Peter J. Stuttaford - Jupiter FL, US
Stephen Jennings - Palm City FL, US
Yan Chen - Palm Beach Gardens FL, US

Assignee:

Power Systems Mfg, LLC - Jupiter FL

International Classification:

F02C 7/228
F02C 9/26

US Classification:

60773, 60776, 60739, 60 39281, 60725

Abstract:

A method of operating a gas turbine combustion system having reduced emissions and improved flame stability at multiple load conditions is disclosed. The improved combustion system accomplishes this through complete premixing, a plurality of fuel injector locations, combustor geometry, and precise three dimensional staging between fuel injectors. Axial, radial, and circumferential fuel staging is utilized including fuel injection proximate air swirlers. Furthermore, strong recirculation zones are established proximate the introduction of fuel and air premixture from different stages to the combustion zone. Fuel injection staging sequences are disclosed that create the conditions necessary to provide stable combustion and reduced emissions at multiple load conditions.

US Patent:

7137256, Nov 21, 2006

Filed:

Feb 28, 2005

Appl. No.:

10/906631

Inventors:

Peter Stuttaford - Jupiter FL, US
Yan Chen - Palm Beach Gardens FL, US
Khalid Oumejjoud - Palm Beach Gardens FL, US
Stephen Jennings - Palm City FL, US

International Classification:

F02C 9/00

US Classification:

60773, 60746, 60747

Abstract:

A method of operating a gas turbine engine combustion system at lower load conditions while maintaining required emissions levels is disclosed. The present invention includes multiple embodiments of axial, radial, and circumferential fuel staging within a can-type combustor having alternate ignition techniques of spark ignition or torch ignition.

US Patent:

7237384, Jul 3, 2007

Filed:

Jan 26, 2005

Appl. No.:

10/905907

Inventors:

Peter Stuttaford - Jupiter FL, US
Yan Chen - Palm Beach Gardens FL, US

International Classification:

F23R 3/12

US Classification:

60776, 60737, 60760

Abstract:

The present invention provides a mixer for a gas turbine combustor comprising a plurality of generally annular walls interconnected by at least a plurality of first vanes. The vanes are oriented at angles, so as to create a shear layer between the two flows. A fuel is then injected so as to penetrate the shear layer for enhanced mixing. The mixture passes through an extended mixing passage to provide sufficient time and distance for improved mixedness prior to ignition. Multiple embodiments of the present invention are disclosed comprising a plurality of first vanes and a plurality of first and second vanes.

US Patent:

7308793, Dec 18, 2007

Filed:

Jan 7, 2005

Appl. No.:

10/905497

Inventors:

Khalid Oumejjoud - Palm Beach Gardens FL, US
Peter Stuttaford - Jupiter FL, US
Yan Chen - Palm Beach Gardens FL, US
Stephen Jennings - Palm City FL, US

Assignee:

Power Systems Mfg., LLC - Jupiter FL

International Classification:

F23R 3/14

US Classification:

60748, 60776

Abstract:

The present invention discloses an apparatus and method for reducing the carbon monoxide emissions emitted by a pilot injector of a gas turbine combustor. Multiple embodiments of a means for establishing a recirculation zone are disclosed whereby a portion of the fuel and air mixture from the pilot injector recirculates and a flame is held, thereby increasing the local reaction temperature at the desired location and lowering carbon monoxide emissions.

US Patent:

8091363, Jan 10, 2012

Filed:

Nov 29, 2007

Appl. No.:

11/998769

Inventors:

Daniel J. Sullivan - Jupiter FL, US
Peter Stuttaford - Jupiter FL, US
Robert J. Kraft - Tequesta FL, US
Khalid Oumejjoud - Riviera Beach FL, US
Yan Chen - Palm Beach Gardens FL, US

Assignee:

Power Systems Mfg., LLC - Jupiter FL

International Classification:

F02C 1/00
B05B 7/10

US Classification:

60748, 239399

Abstract:

Embodiments for an apparatus and associated method for reducing the residence time in a gas turbine combustor are disclosed. The embodiments of the present invention comprise a fuel nozzle that extends to a downstream plane of an end cap for a combustion liner where the axial distance of the premixer is reduced, however the swirl for mixing the fuel and air, is increased. As a result, the mixing of the fuel and air is essentially unchanged, thereby allowing higher air pressures and operating temperatures within the premixer without inducing auto-ignition.

US Patent:

8438853, May 14, 2013

Filed:

Oct 8, 2008

Appl. No.:

12/247615

Inventors:

Andrew Green - Jupiter FL, US
Peter Stuttaford - Jupiter FL, US
Yan Chen - Sammamish WA, US
Hany Rizkalla - Stuart FL, US

Assignee:

Alstom Technology Ltd. - Baden

International Classification:

F02C 1/00
F02G 3/00

US Classification:

60746, 60737, 60752, 60804

Abstract:

A combustor end cap assembly having an improved cooling configuration is disclosed. Embodiments of the present invention are directed towards an apparatus and method for cooling an effusion plate of the combustor end cap assembly. The combustor end cap assembly also incorporates an impingement plate having a plurality of cooling holes with the impingement plate positioned a predetermined distance from the effusion plate. The cooling fluid passes through the impingement plate and is directed towards and onto the effusion plate for cooling of the effusion plate.

US Patent:

20210131308, May 6, 2021

Filed:

Nov 4, 2019

Appl. No.:

16/673141

Inventors:

- Farmington CT, US
Goran Djuknic - New York NY, US
Yan Chen - South Windsor CT, US

International Classification:

F01D 25/16
F16C 19/52

Abstract:

A bearing assembly monitoring system includes a bearing assembly supporting rotation of a rotating member. The bearing assembly includes a fixed portion and rotatable portion. A piezoelectric element is mounted to the fixed portion and generates an electric signal in response to a vibration of the fixed portion. A first transceiver is electrically coupled to the piezoelectric element to receive the electrical signal generated by the piezoelectric element and generate a signal indicative of the vibration of the fixed portion. A gas turbine engine bearing monitoring system and a method are also disclosed.