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Secondary fuel nozzle with improved fuel pegs and fuel dispersion method

A technology of fuel nozzles and fuel pins, applied in the direction of combustion methods, burners, combustion chambers, etc., can solve problems such as high emissions, and achieve the effect of complete combustion

Inactive Publication Date: 2007-09-26
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diffusion nozzles produce high emissions due to the fact that fuel and air burn stoichiometrically at high temperatures

Method used

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  • Secondary fuel nozzle with improved fuel pegs and fuel dispersion method
  • Secondary fuel nozzle with improved fuel pegs and fuel dispersion method
  • Secondary fuel nozzle with improved fuel pegs and fuel dispersion method

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Embodiment Construction

[0011] The present invention provides an improved fuel pin for a secondary fuel nozzle that uses a fuel pin cut into at least one fuel pin to provide more uniform air and fuel mixing and more uniform fuel dispersion At least one curved groove instead of a traditional bore hole for pouring fuel.

[0012] FIG. 1 schematically shows a secondary fuel nozzle 10 configured to inject fuel into a combustion chamber 18 . FIGS. 1 , 2 and 3 show fuel pins 12 disposed at discrete locations around the periphery of the nozzle body 16 for injecting fuel mixed with air. In the illustration of FIG. 2 , at least one passage 26 for fuel extends from the base body 28 of the secondary fuel nozzle 10 to the vicinity of the injector pin 12 . FIG. 3 shows a nozzle similar in structure to that of FIG. 2 , except that a concentric passage 126 extending to the fuel pin 12 is defined. An additional passage 30 is defined from upstream of the fuel pin 12 through the secondary fuel nozzle to the tip 14 of...

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PUM

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Abstract

An improved fuel peg (112) for a secondary fuel nozzle (10) is provided that includes at least one slot (122), thereby to better disperse fuel around the secondary fuel nozzle body (16), thus providing a more uniform fuel air mixture and more complete combustion .

Description

technical field [0001] The present invention relates to secondary fuel nozzles and fuel dispersion methods with improved fuel pins. Background technique [0002] To minimize pollution from pneumatic turbines, government agencies have created many regulations to reduce emissions, especially nitrogen oxides (NO). X ) and carbon monoxide (CO) emissions. Lower combustion emissions come from a more efficient combustion process, particularly with regard to fuel injectors and nozzles. Early combustion systems used diffusion-type nozzles that produced diffusion flames, which were nozzles that injected fuel and air separately, which achieved mixing by spreading in the flame zone. Diffusion nozzles produce high emissions due to the fact that fuel and air burn stoichiometrically at high temperatures. An improvement over diffusion nozzles is the use of some form of premixing to allow the fuel and air to mix prior to combustion to form a homogeneous mixture that burns at a lower tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28
CPCF23D2900/14004F23R3/286
Inventor W·K·赫斯勒
Owner GENERAL ELECTRIC CO