Patents by Inventor Peter Stuttaford

Peter Stuttaford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190154263
    Abstract: A method is disclosed for controlling fuel injection in a reheat combustor of a gas turbine combustor assembly including a combustor casing defining a gas flow channel and a plurality of injection nozzles distributed in or around the gas flow channel; the method includes the step of distributing fuel among the injection nozzles according to a non-uniform distribution pattern.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 23, 2019
    Inventors: Mirko Ruben BOTHIEN, Douglas PENNELL, Peter STUTTAFORD
  • Patent number: 9927124
    Abstract: The present invention discloses a fuel nozzle assembly and method for axially staging fuel injection. The fuel nozzle assembly comprises a plurality of vanes connected to a core, with an annular ring connectedly surrounding the plurality of vanes. Fuel is directed through the core and then through the vanes and is injected at different axial planes generally perpendicular to an oncoming air stream to obtain a broad spectrum of gas residence time between the point of fuel injection and the flame.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: March 27, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Peter Stuttaford, Chiluwata Lungu, Sumit Soni, Nicolas Demougeot, Justin Bosnoian, Kevin B. Powell, Paul Economo
  • Publication number: 20180080654
    Abstract: The invention refers to a sequential combustor arrangement comprising a first burner, a first combustion chamber, a mixer for admixing a dilution gas via a dilution gas inlet to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The sequential combustor arrangement further includes four cooling zones with a cooling channel. During operation a cooling gas flows through the cooling channels. The disclosure further refers to a method for operating a gas turbine with such a sequential combustor arrangement.
    Type: Application
    Filed: November 28, 2017
    Publication date: March 22, 2018
    Inventors: Ewald Freitag, Adnan Eroglu, Michael Maurer, Peter Stuttaford
  • Patent number: 9890955
    Abstract: The invention refers to a sequential combustor arrangement comprising a first burner, a first combustion chamber, a mixer for admixing a dilution gas via a dilution gas inlet to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The sequential combustor arrangement further includes four cooling zones with a cooling channel. During operation a cooling gas flows through the cooling channels. The disclosure further refers to a method for operating a gas turbine with such a sequential combustor arrangement.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: February 13, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Ewald Freitag, Adnan Eroglu, Michael Maurer, Peter Stuttaford
  • Patent number: 9810427
    Abstract: The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having a plurality of coaxial tubes and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through a hemispherically-shaped dome portion at an air inlet region of the fuel nozzle assembly. The hemispherically-shaped dome includes a plurality of openings for directing air into the fuel nozzle assembly in a direction having a radial and axial component.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: November 7, 2017
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Luiz Claudio Fernandes, Brian Richardson, Peter Stuttaford, Sumit Soni, David Schlamp, Chiluwata Lungu, Justin Bosnoian, Nicolas Demougeot, Kevin B. Powell, Brandon Hill, Marc Paskin
  • Publication number: 20160281978
    Abstract: The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having one or more coaxial flow dividers and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through one or more coaxial flow dividers spaced axially and radially about the air inlet region of the fuel nozzle assembly so as to form a non-uniform radial distribution of compressed air to the inlet region of the fuel nozzle assembly.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventors: LUIZ CLAUDIO FERNANDES, BRIAN RICHARDSON, PETER STUTTAFORD, SUMIT SONI, DAVID SCHLAMP, CHILUWATA LUNGU, JUSTIN BOSNOIAN, NICOLAS DEMOUGEOT, KEVIN B. POWELL, BRANDON HILL, MARC PASKIN
  • Publication number: 20160281990
    Abstract: The present invention discloses a fuel nozzle assembly and method for axially staging fuel injection. The fuel nozzle assembly comprises a plurality of vanes connected to a core, with an annular ring connectedly surrounding the plurality of vanes. Fuel is directed through the core and then through the vanes and is injected at different axial planes generally perpendicular to an oncoming air stream to obtain a broad spectrum of gas residence time between the point of fuel injection and the flame.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventors: PETER STUTTAFORD, CHILUWATA LUNGU, SUMIT SONI, NICOLAS DEMOUGEOT, JUSTIN BOSNOIAN, KEVIN B. POWELL, PAUL ECONOMO
  • Publication number: 20160281979
    Abstract: The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having a plurality of coaxial tubes and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through a hemispherically-shaped dome portion at an air inlet region of the fuel nozzle assembly.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventors: Luiz Claudio FERNANDES, Brian RICHARDSON, Peter STUTTAFORD, Sumit SONI, David SCHLAMP, Chiluwata LUNGU, Justin BOSNOIAN, Nicolas DEMOUGEOT, Kevin B. POWELL, Brandon HILL, Marc PASKIN
  • Patent number: 9376963
    Abstract: A tuning process is provided for dynamically tuning a gas-turbine (GT) engine to correct for flashback events without directly measuring occurrences of the flashback events at the GT engine. Initially, readings are taken that measure low-frequency dynamics at the GT engine. A determination of whether flashback criteria are met by an instantaneous signal that quantifies a detected spike within the measured low-frequency dynamics is carried out, where the flashback criteria include the following: identifying the spike overcomes a multiple of an average of the low-frequency dynamics measured over a predefined period of time; and identifying the spike overcomes a preestablished minimum amplitude. Upon the spike meeting the flashback criteria, a count is added to a running record of spikes, which is compared to an alarm limit. If the alarm limit is triggered, action(s) are invoked to address the flashback events, such as adjusting fuel-flow splits of the GT engine.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: June 28, 2016
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Sumit Soni, Donald Gauthier, Hany Rizkalla, Khalid Oumejjoud, Peter Stuttaford
  • Patent number: 9121279
    Abstract: A system and method for tuning a gas turbine combustion system having a plurality of seals positioned between the combustion system and the turbine inlet is disclosed. The system and method provide ways of permitting a predetermined amount of compressed air to bypass the combustion system and enter the turbine so as to control emissions and dynamics of the combustion system. The seals contain a plurality of holes to meter airflow passing therethrough and are positioned such that they can be removed from the engine and modified to increase or decrease the amount of air passing therethrough.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: September 1, 2015
    Assignee: Alstom Technology Ltd
    Inventors: Sherman Craig Creighton, Charles Ellis, David John Henriquez, Peter Stuttaford
  • Patent number: 9097185
    Abstract: An auto-tune controller and tuning process implemented thereby for measuring and tuning the combustion dynamics and emissions of a GT engine, relative to predetermined upper limits, are provided. Initially, the tuning process includes monitoring the combustion dynamics of a plurality of combustors and emissions for a plurality of conditions. Upon determination that one or more of the conditions exceeds a predetermined upper limit, a fuel flow split to a fuel circuit on all of the combustors on the engine is adjusted by a predetermined amount. The control system continues to monitor the combustion dynamics and to recursively adjust the fuel flow split by the predetermined amount until the combustion dynamics and/or emissions are operating within a prescribed range of the GT engine.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 4, 2015
    Assignee: Alstom Technology Ltd
    Inventors: Nicolas Demougeot, Donald Gauthier, Hany Rizkalla, Peter Stuttaford, Khalid Oumejjoud
  • Publication number: 20150159876
    Abstract: The invention refers to a sequential combustor arrangement comprising a first burner, a first combustion chamber, a mixer for admixing a dilution gas via a dilution gas inlet to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The sequential combustor arrangement further includes four cooling zones with a cooling channel. During operation a cooling gas flows through the cooling channels. The disclosure further refers to a method for operating a gas turbine with such a sequential combustor arrangement.
    Type: Application
    Filed: February 19, 2015
    Publication date: June 11, 2015
    Inventors: Ewald Freitag, Adnan Eroglu, Michael Maurer, Peter Stuttaford
  • Patent number: 8997499
    Abstract: A system and way for controlling a gas turbine engine in the event of a partial or full load rejection from a generator is disclosed. Upon detection of a partial or full load rejection, the fuel flow of the combustor is directed to a secondary circuit of a secondary fuel nozzle to maintain a flame in a downstream chamber of the combustor. By maintaining the flame in the downstream chamber while the engine speed is controlled, the recovery process to a load condition avoids use of spark ignition system and flame detectors in the upstream chamber.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: April 7, 2015
    Assignee: Alstom Technology Ltd
    Inventors: Nicolas Demougeot, Jon Glende, Peter Stuttaford
  • Publication number: 20140196461
    Abstract: A tuning process is provided for dynamically tuning a gas-turbine (GT) engine to correct for flashback events without directly measuring occurrences of the flashback events at the GT engine. Initially, readings are taken that measure low-frequency dynamics at the GT engine. A determination of whether flashback criteria are met by an instantaneous signal that quantifies a detected spike within the measured low-frequency dynamics is carried out, where the flashback criteria include the following: identifying the spike overcomes a multiple of an average of the low-frequency dynamics measured over a predefined period of time; and identifying the spike overcomes a preestablished minimum amplitude. Upon the spike meeting the flashback criteria, a count is added to a running record of spikes, which is compared to an alarm limit. If the alarm limit is triggered, action(s) are invoked to address the flashback events, such as adjusting fuel-flow splits of the GT engine.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 17, 2014
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: SUMIT SONI, DONALD GAUTHIER, HANY RIZKALLA, KHALID OUMEJJOUD, PETER STUTTAFORD
  • Patent number: 8731797
    Abstract: A tuning process is provided for monitoring fuel properties of a fuel being consumed by a gas turbine (GT) engine, and for dynamically tuning the GT engine as a function of changes to the monitored fuel properties. Initially, readings are taken from the GT engine during a reference calibration, or commissioning, and utilized to calculate an initial-pressure-drop reference value. The tuning process during commercial operation takes post-calibration readings from the GT engine to calculate a fuel property parameter, which represents a heating value of the fuel. Specifically, the fuel property parameter is calculated by deriving a corrected-pressure-drop dynamic value as a function of pressure and temperature readings of the fuel at a point upstream of a combustor and pressure drops across fuel nozzles that introduce the fuel into the combustor, and solving a ratio of the dynamic value and the reference value.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: May 20, 2014
    Assignee: Alstom Technology Ltd.
    Inventors: Nicolas Demougeot, Donald Gauthier, Peter Stuttaford, Hany Rizkalla
  • Patent number: 8566001
    Abstract: Methods for controlling a gas turbine engine are provided, where a compressor inlet temperature, ambient temperature, and relative humidity are measured. Utilizing these measurements, it is first determined whether an evaporation cooler is actively importing water content into inlet air entering the compressor. This determination is based on whether the inlet air is substantially cooler than the ambient temperature. If so, an EC correction factor is added to an inlet air temperature value (CTIM) and set as an air temperature parameter (INLETIM). Second, it is determined whether the relative humidity is greater than a predefined threshold. If so, a relative humidity (RH) correction factor is added to CTIM and set as the INLETIM. Next, the INLETIM and TTRF are located in a look-up table, and a bias value corresponding to these inputs is identified. The fuel-flow for a fuel circuit is adjusted according to the identified bias value.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: October 22, 2013
    Assignee: Alstom Technology Ltd.
    Inventors: Peter Stuttaford, Nicolas Demougeot, Melvin Swann
  • Publication number: 20130255257
    Abstract: Disclosed herein is a system comprising a compressor in mechanical communication with a turbine; the compressor being operative to produce compressed air; a premixer; the premixer being operative to mix a fuel with the compressed air; a carbonator being located downstream of the premixer; the carbonator being operative to receive a mixture of carbon dioxide and syngas and to convert a metal oxide into a metal carbonate by reacting it with the carbon dioxide; a calciner; the calciner being operative to receive the metal carbonate from the carbonator; and to dissociate carbon dioxide from the metal carbonate; and a combustor; the combustor being located downstream of the carbonator; where the combustor is operative to combust syngas received from the carbonator.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Gian-Luigi Agostinelli, Peter Stuttaford, Richard Carroni, Michal Bialkowski
  • Patent number: 8438853
    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.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: May 14, 2013
    Assignee: Alstom Technology Ltd.
    Inventors: Andrew Green, Peter Stuttaford, Yan Chen, Hany Rizkalla
  • Patent number: 8418474
    Abstract: A transition duct having a thermally free aft frame and being capable of adjusting the natural frequency is disclosed. The aft frame is capable of permitting movement due to thermal gradients with the transition duct. The transition duct utilizes a spring plate located adjacent to an aft mounting bracket, where the spring plate, based on its thickness can either increase or decrease a frequency of the transition duct. Such an arrangement ensures that the transition duct natural frequency does not coincide with or cross other critical engine and/or combustor frequencies.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: April 16, 2013
    Assignee: Alstom Technology Ltd.
    Inventors: Hany Rizkalla, Stephen W. Jorgensen, Peter Stuttaford
  • Patent number: 8417433
    Abstract: Tuning processes implemented by an auto-tune controller are provided for measuring and adjusting the combustion dynamics and the emission composition of a gas turbine (GT) engine via a tuning process. Initially, the tuning process includes monitoring parameters, such as combustion dynamics and emission composition. Upon determining that one or more of the monitored parameters exceed a critical value, these “out-of-tune” parameters are compared to a scanning order table. Upon comparison, the first out-of-tune parameter that is matched within the scanning order table is addressed. The first out-of-tune parameter is then plotted as overlaid slopes on respective graphs, where the graph represents a fuel-flow split. Typically, the slopes are plotted as a particular out-of-tune parameter against a particular fuel-flow split. The slopes for each graph are considered together by taking into account the combined impact on each out-of-tune parameter when a fuel-flow split is selected for adjustment.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: April 9, 2013
    Assignee: Alstom Technology Ltd.
    Inventors: Donald Gauthier, Nicolas Demougeot, Peter Stuttaford, Hany Rizkalla