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Gas turbine fuel system for low dynamics

A combustion chamber and air purification technology, applied in liquid fuel supply/distribution, burners, combustion chambers, etc., to solve problems such as heat release rate changes, combustion chamber high pressure fluctuations, and mass flow fuel-air fluctuations

Inactive Publication Date: 2012-08-01
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, because these combustors operate at such lean fuel / air (f / a) ratios, relatively small changes in velocity fluctuations can result in mass flow and fuel-air Relatively large changes in volatility
These fluctuations cause large changes in the heat release rate and also cause high pressure fluctuations in the combustion chamber

Method used

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  • Gas turbine fuel system for low dynamics
  • Gas turbine fuel system for low dynamics
  • Gas turbine fuel system for low dynamics

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Embodiment Construction

[0019] refer to figure 1 , the present invention provides a gas turbine engine 10 including a combustor 20, such as a dry low NO, in which a mixture of fuel and gas is combusted to generate energy and electricity X (DLN) combustor, multiple fuel nozzles 30 with dual fuel capability. Said combustion chamber 20 comprises a sleeve 21 and a wall 22 through which a premixing channel 221 is formed. The plurality of nozzles 30 are arranged at the head end of the gas turbine engine 10 at an axial position upstream of the combustion area of ​​the combustion chamber 20 . The plurality of nozzles 30 are arranged around a common central axis at this axial position.

[0020] Each nozzle 30 includes a premixer consisting of a length / section of the sleeve 21 to mix the gaseous fuel with the combustion air via swirler vanes and fuel spokes and a center body 60 disposed within the sleeve 21 . The center body 60 has a tubular inner wall 61, a fuel cartridge 70 housed in the center body 60 to...

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Abstract

A combustor is provided and includes a center body having a tubular inner wall, a cartridge disposed within the tubular inner wall to define an outer annular space between an outer surface thereof and the tubular inner wall and an inner annular space having an open end and a closed end opposite the open end and an insert disposed within the outer annular space to envelop the cartridge proximate to the open end, the insert including a body having a tubular forward portion and a partially tubular aft portion, the partially tubular aft portion thereby forming a recessed track having a longitudinal axis substantially aligned with a longitudinal axis of the outer annular space.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a combustor casing for slowing combustion power. Background technique [0002] In a conventional gas turbine engine, a mixture of fuel and gas is burned, and the high-energy fluids produced during the combustion process are used to generate energy and electricity. The byproducts of the combustion process are vented into the atmosphere or otherwise disposed of. In both cases, it has become increasingly important to limit the levels of specific pollutants in these by-products. Specifically, nitrogen oxides (NOx X ) and carbon monoxide (CO) emissions to comply with local and national pollution regulations. [0003] Currently, gas turbine engines may use dry low NO X (DLN) combustor, dry low emission (DLE) combustor or lean premixed (LPM) combustion system to achieve NO X purpose of emission reduction. These options all involve using a fuel-lean air mixture (e.g., an equiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/16
CPCF23D11/386F23D2900/00008F23R3/36F23D2900/14004F23R3/04F23R3/286F23K5/18F23C2900/07001F23D2209/30F23R2900/00014F23M99/005F23M20/005
Inventor 金冠佑N·G·帕萨尼亚D·沙马
Owner GENERAL ELECTRIC CO