Combustor and method for conditioning flow through a combustor
a combustor and flow technology, applied in the direction of hot gas positive displacement engine plants, combustion process, lighting and heating apparatus, etc., can solve the problems of adversely affecting the useful life of the combustor hardware and/or downstream components, affecting the stability of the combustion flame, and severe damage to the nozzle in a relatively short amount of tim
Inactive Publication Date: 2013-03-21
GENERAL ELECTRIC CO
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Benefits of technology
The invention has various benefits and advantages that are described below. These benefits and advantages can be easily understood by reviewing the details of the invention.
Problems solved by technology
However, higher combustion gas temperatures also promote flashback or flame holding conditions in which the combustion flame migrates towards the fuel being supplied by the nozzles, possibly causing severe damage to the nozzles in a relatively short amount of time.
Increased combustion dynamics may adversely affect the useful life of the combustor hardware and / or downstream components.
Alternately, or in addition, high frequencies of combustion dynamics may produce pressure pulses inside the nozzles and / or combustion chamber that affect the stability of the combustion flame, reduce the design margins for flashback or flame holding, and / or increase undesirable emissions.
Method used
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[0021]Reference will now be made in detail to present embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention.
[0022]Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment may be used on another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
[0023]Various embodi...
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A combustor includes an end cover and a casing adjacent to the end cover, wherein the end cover and casing at least partially define a volume inside the combustor. The combustor further includes an end cap that extends radially across at least a portion of the combustor, at least one nozzle arranged in the end cap to provide fluid communication through the end cap, and means for conditioning flow through the volume. A method for conditioning flow through a combustor includes flowing a working fluid through a volume at least partially defined by an end cover, a casing, and an end cap that extends radially across at least a portion of the combustor and flowing the working fluid across an annular insert adjacent to the end cover.
Description
FIELD OF THE INVENTION[0001]The present invention generally involves a combustor and method for conditioning flow through the combustor. In particular embodiments of the present invention, one or more modular inserts may be installed inside the combustor to reduce the combustion dynamics and / or recirculation zones inside the combustor.BACKGROUND OF THE INVENTION[0002]Combustors are commonly used in industrial and power generation operations to ignite fuel to produce combustion gases having a high temperature and pressure. For example, gas turbines typically include one or more combustors to generate power or thrust. A typical gas turbine used to generate electrical power includes an axial compressor at the front, one or more combustors around the middle, and a turbine at the rear. Ambient air may be supplied to the compressor, and rotating blades and stationary vanes in the compressor progressively impart kinetic energy to the working fluid (air) to produce a compressed working flui...
Claims
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Login to View More IPC IPC(8): F23R3/26F23R3/02
CPCF23R3/04
Inventor OVERBY, BRANDON TAYLORBELSOM, KEITH C.STEWART, JASON THURMANHAJILOO, AZARDOKHTDICINTIO, RICHARD MARTINOUELLET, DERECK J.
Owner GENERAL ELECTRIC CO