Combustor oscillating pressure stabilization and method

Title: Combustor oscillating pressure stabilization and method

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Abstract

High dynamic pressure oscillations in hydrocarbon-fueled combustors typically occur when the transport time of the fuel to the flame front is at some fraction of the acoustic period. These oscillations are reduced to acceptably lower levels by restructuring or repositioning the flame front in the combustor to increase the transport time. A pilot flame front located upstream of the oscillating flame and pulsed at a selected frequency and duration effectively restructures and repositions the oscillating flame in the combustor to alter the oscillation-causing transport time.

Inventors:

Gemmen, Randall S ^[1]; Richards, George A ^[1]; Yip, Mui-Tong Joseph ^[1]; Robey, Edward H ^[2]; Cully, Scott R ^[1]; Addis, Richard E ^[3]

Morgantown, WV
Westover, WV
Smithfield, PA

Issue Date:: 1998-01-01

Research Org.:: EG & G TECH SVCS OF WV INC

OSTI Identifier:: 871766

Patent Number(s):: 5791889

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS

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F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F05D2260/962 - by means of "anti-noise"

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
F23R2900/00013 - Reducing thermo-acoustic vibrations by active means

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F05D2270/14 - to control thermoacoustic behaviour in the combustion chambers

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T50/60 - Efficient propulsion technologies

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23N - REGULATING OR CONTROLLING COMBUSTION
F23N5/16 - using noise-sensitive detectors

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
F23R2900/00014 - Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators
F23R3/28 - characterised by the fuel supply

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DOE Contract Number:: AC21-90MC26328

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: combustor; oscillating; pressure; stabilization; method; dynamic; oscillations; hydrocarbon-fueled; combustors; typically; occur; transport; time; fuel; flame; front; fraction; acoustic; period; reduced; acceptably; levels; restructuring; repositioning; increase; pilot; located; upstream; pulsed; selected; frequency; duration; effectively; restructures; repositions; alter; oscillation-causing; selected frequency; pilot flame; located upstream; pressure oscillations; flame front; oscillating pressure; dynamic pressure; /431/60/

Citation Formats


                    Gemmen, Randall S, Richards, George A, Yip, Mui-Tong Joseph, Robey, Edward H, Cully, Scott R, and Addis, Richard E. Combustor oscillating pressure stabilization and method.  United States: N. p., 1998. 
        Web.

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                    Gemmen, Randall S, Richards, George A, Yip, Mui-Tong Joseph, Robey, Edward H, Cully, Scott R, & Addis, Richard E. Combustor oscillating pressure stabilization and method.  United States.

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                    Gemmen, Randall S, Richards, George A, Yip, Mui-Tong Joseph, Robey, Edward H, Cully, Scott R, and Addis, Richard E. Thu .  
        "Combustor oscillating pressure stabilization and method".  United States.  https://www.osti.gov/servlets/purl/871766.

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@article{osti_871766,

  title        = {Combustor oscillating pressure stabilization and method},

  author       = {Gemmen, Randall S and Richards, George A and Yip, Mui-Tong Joseph and Robey, Edward H and Cully, Scott R and Addis, Richard E},

  abstractNote = {High dynamic pressure oscillations in hydrocarbon-fueled combustors typically occur when the transport time of the fuel to the flame front is at some fraction of the acoustic period. These oscillations are reduced to acceptably lower levels by restructuring or repositioning the flame front in the combustor to increase the transport time. A pilot flame front located upstream of the oscillating flame and pulsed at a selected frequency and duration effectively restructures and repositions the oscillating flame in the combustor to alter the oscillation-causing transport time.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {1}

}

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