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A combined afterburner with fuel injection stability and integration

A technology of afterburner and stabilizer, which is applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc. It can solve the problems of short distance, self-ignition of fuel oil, ablation of stabilizer, etc., and achieves reduced flow resistance loss and simple structure Compactness, the effect of shortening the shortest distance

Active Publication Date: 2019-06-18
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the incoming flow temperature is greatly increased, the distance for the fuel to spontaneously ignite is very short, and the traditional method of fuel injection and stable separate arrangement is very prone to spontaneous combustion and ignition of the fuel in front of the stabilizer, causing ablation of the stabilizer; in addition, as the engine The improvement of performance index requirements, the flow resistance loss of fuel injection and stability systems, etc. also need to be improved by improving the design

Method used

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  • A combined afterburner with fuel injection stability and integration
  • A combined afterburner with fuel injection stability and integration

Examples

Experimental program
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Effect test

Embodiment 1

[0015] This embodiment provides a combined afterburner with stable and integrated fuel injection, which is characterized in that the combined afterburner with stable and integrated fuel injection includes a stabilizer side wall 1, a fuel injection rod 2, The fuel injection plug 3 on the fuel injection rod, the tail plate 4;

[0016] Among them: the side wall 1 of the stabilizer and the tail plate 4 form a cavity, the fuel injection rod 2 is placed in the cavity, and the fuel injection plug 3 on the fuel injection rod protrudes through the hole K opened on the side wall.

[0017] The trailing edge of the side wall 1 of the stabilizer is opened by 30° to form a blunt body with a certain width to stabilize the flame.

[0018] A series of fuel injection plugs 3 are welded on the fuel injection rod 2, and a series of oblong holes K are opened on the side wall 1 of the stabilizer. Inside the stabilizer; between a series of oblong holes K and the fuel injection plug 3, there is a ga...

Embodiment 2

[0021] This embodiment provides a combined afterburner with stable and integrated fuel injection, which is characterized in that the combined afterburner with stable and integrated fuel injection includes a stabilizer side wall 1, a fuel injection rod 2, The fuel injection plug 3 on the fuel injection rod, the tail plate 4;

[0022] Among them: the side wall 1 of the stabilizer and the tail plate 4 form a cavity, the fuel injection rod 2 is placed in the cavity, and the fuel injection plug 3 on the fuel injection rod protrudes through the hole K opened on the side wall.

[0023] The trailing edge of the side wall 1 of the stabilizer is opened by 90° to form a blunt body with a certain width to stabilize the flame.

[0024] A series of fuel injection plugs 3 are welded on the fuel injection rod 2, and a series of oblong holes K are opened on the side wall 1 of the stabilizer. Inside the stabilizer; between a series of oblong holes K and the fuel injection plug 3, there is a ga...

Embodiment 3

[0027] This embodiment provides a combined afterburner with stable and integrated fuel injection, which is characterized in that the combined afterburner with stable and integrated fuel injection includes a stabilizer side wall 1, a fuel injection rod 2, The fuel injection plug 3 on the fuel injection rod, the tail plate 4;

[0028] Among them: the side wall 1 of the stabilizer and the tail plate 4 form a cavity, the fuel injection rod 2 is placed in the cavity, and the fuel injection plug 3 on the fuel injection rod protrudes through the hole K opened on the side wall.

[0029] The trailing edge of the side wall 1 of the stabilizer opens 120° to form a blunt body with a certain width to stabilize the flame.

[0030] A series of fuel injection plugs 3 are welded on the fuel injection rod 2, and a series of oblong holes K are opened on the side wall 1 of the stabilizer. Inside the stabilizer; between a series of oblong holes K and the fuel injection plug 3, there is a gap for ...

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Abstract

A combined afterburner integrating oil injection and stabilization is characterized by comprising a stabilizer side wall, an oil injection rod, an oil injection plug on the oil injection rod and a tail board, wherein the stabilizer side wall and the tail board form a cavity, the oil injection rod is placed in the cavity, and the oil injection plug on the oil injection rod extends out of a hole formed in the side wall. The tail edge of the stabilizer side wall opens by 30-120 degrees to form a blunt body with a certain width to stabilize flames. The combined afterburner integrating oil injection and stabilization has the advantages as follows: the shortest distance between an oil injection point and the tail edge of a stabilizer is effectively shortened, the ablation risk due to spontaneous combustion of fuel oil under the high-temperature condition is greatly reduced, the structure is simple and compact, and the flow resistance loss is greatly reduced.

Description

technical field [0001] The invention relates to the design field of afterburner chambers of aero-engines, in particular to a combined afterburner chamber with fuel injection stability and integration. Background technique [0002] In the traditional aero-engine afterburner, the fuel injection rod is generally arranged in front of the stabilizer, and there is a relatively long distance between the fuel injection rod and the stabilizer to ensure that the fuel is fully atomized and mixed. However, when the incoming flow temperature is greatly increased, the distance for the fuel to spontaneously ignite is very short. The traditional way of fuel injection and stable separate arrangement is very prone to spontaneous combustion and ignition of the fuel in front of the stabilizer, causing ablation of the stabilizer; in addition, as the engine The improvement of performance index requirements, the flow resistance loss of fuel injection and stability systems, etc. also need to be imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/28
Inventor 刘宝游庆江徐兴平鲍占洋刘涛陈砥胡玉德刘燕燕高家春
Owner AECC SHENYANG ENGINE RES INST
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