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Double-oil-circuit fuel nozzle

A fuel nozzle and dual oil circuit technology, which is applied in combustion chambers, combustion methods, combustion equipment, etc., can solve the problems of large spray cone angle of fuel nozzles and wide fuel supply range of aero-engine combustion chambers, etc.

Active Publication Date: 2013-06-05
中国航发贵阳发动机设计研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention needs to solve the problems of wide fuel supply range and large fuel nozzle spray cone angle in the combustion chamber of the aero-engine

Method used

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Embodiment Construction

[0021] The present invention will be described in further detail below through specific embodiments. The following implementations are only descriptive, not restrictive, and cannot limit the scope of protection of the present invention.

[0022] Such as figure 1 As shown, a dual oil path fuel nozzle of the present invention is mainly composed of a nozzle housing 1, a secondary oil path swirler 2, a main oil path swirler 3, and a main oil path nozzle 4. The secondary oil path swirler 2 Installed in the main oil passage cyclone 3, and then installed on the nozzle housing 1 together, and then install the main oil passage nozzle 4 outside the main nozzle cyclone 3.

[0023] Such as figure 1 figure 2 , image 3 with Figure 4 As shown, the main oil passage nozzle 4 is composed of a gas hood 5 and a main oil passage nozzle body 7. The gas hood 5 is attached to the main oil passage nozzle body 7; the gas hood 5 is designed to blow off the surface carbon of the nozzle Nozzle air inlet 6...

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Abstract

The invention relates to a double-oil-circuit fuel nozzle, in particular to a double-oil-circuit large-spray-cone-angle fuel nozzle. The double-oil-circuit fuel nozzle mainly comprises a nozzle shell body, a main oil circuit nozzle, a main oil circuit swirler and a vice oil circuit swirler. A main oil circuit swirling chamber is formed by the main oil circuit swirl and an inner cavity of the main oil circuit nozzle, a vice oil circuit swirling chamber is formed by a head cone-shaped body of the vice oil circuit swirler and a convergence taper angle of the inner cavity of the main oil circuit swirler, and a cooling air channel is designed on the main oil circuit nozzle. The problem that an aero-engine combustor is wide in fuel supply range is well resolved, a spray cone angle of the fuel nozzle is increased by 10 degrees to 15 degrees, and the effects of nozzle cooling and nozzle surface carbon deposition blowing down are achieved.

Description

Technical field [0001] The invention relates to a dual oil path fuel nozzle; in particular, it relates to a dual oil path pressure atomized fuel nozzle with a large spray cone angle. Background technique [0002] General fuel nozzles are customarily called fuel injectors, and are widely used in the burners of heating equipment such as thermal power plants and industrial furnaces. Liquid fuels such as diesel, kerosene, heavy oil and alcohol fuels can be used. The fuel nozzle is to inject fuel into the combustion chamber to mix, atomize and burn with other media such as compressed air. The fuel injection and atomization power of the fuel nozzle is formed by fuel pump boosting or high-pressure air mixing. Fuel nozzles are divided into single oil circuit and dual oil circuit. Dual oil circuit fuel nozzles are further divided into dual circuit single chamber single nozzle fuel nozzle, dual circuit dual chamber single nozzle nozzle (tandem dual fuel circuit nozzle), dual circuit dual ...

Claims

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Application Information

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IPC IPC(8): F23R3/38
Inventor 刘永忠
Owner 中国航发贵阳发动机设计研究所
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