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Double-oil-circuit fuel nozzle

A technology of fuel nozzle and double oil circuit, which is applied in the direction of combustion chamber, combustion method, combustion equipment, etc., and can solve the problems of wide fuel supply range of aeroengine combustion chamber and large spray cone angle of fuel nozzle

Active Publication Date: 2014-12-17
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] Such as figure 1 As shown, a dual-oil circuit fuel nozzle of the present invention is mainly composed of a nozzle housing 1, an auxiliary oil circuit swirler 2, a main oil circuit swirler 3 and a main oil circuit nozzle 4, and the auxiliary oil circuit swirler 2 Installed in the main oil circuit swirler 3, and then installed on the nozzle housing 1, and then the main oil circuit nozzle 4 is installed outside the main nozzle swirler 3.

[0022] Such as figure 1 figure 2 , image 3 with Figure 4 As shown, the main oil circuit nozzle 4 is composed of a gas cover 5 and a main oil circuit nozzle body 7, and the gas cover 5 is mounted on the main oil circuit nozzle body 7; Nozzle air intake hole 6 and nozzle blowing hole 8; main oil circuit swirl groove 11 is designed on the cylindrical surface of main oil circuit swirler 3; auxiliary oil circuit is designed on the cone of auxiliary oil circuit swirler 2 Swirl tank 16.

[0023] The improved design of the secondary oil...

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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 circuit fuel nozzle, in particular to a dual oil circuit pressure atomization fuel nozzle with a large spray cone angle. Background technique [0002] General fuel nozzles are customarily called fuel injectors, and are widely used in burners of thermal power devices, industrial furnaces and other heating equipment, and can use liquid fuels such as diesel, kerosene, heavy oil and alcohol fuels. The fuel nozzle is to inject fuel into the combustion chamber to mix, atomize and burn with other media such as compressed air. The power of fuel injection and atomization of fuel nozzles is formed by fuel pump boosting or high-pressure air mixing. Fuel nozzles are divided into single oil circuit and double oil circuit, and dual oil circuit fuel nozzles are divided into two-way single-chamber single-jet fuel nozzle, Nozzle fuel nozzle (parallel dual oil circuit nozzle). Different nozzles can be designed and selected accordin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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