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A pre-evaporation integrated afterburner

An afterburner and pre-evaporation technology, which is applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc., can solve the problems of low combustion efficiency and poor infrared stealth performance

Inactive Publication Date: 2017-12-26
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the defects of low combustion efficiency and poor infrared stealth performance are still not solved

Method used

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  • A pre-evaporation integrated afterburner
  • A pre-evaporation integrated afterburner
  • A pre-evaporation integrated afterburner

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Embodiment Construction

[0016] The present invention will be further described now in conjunction with accompanying drawing:

[0017] combine figure 1 , figure 2 , image 3 , The invention provides a pre-evaporation integrated afterburner. figure 1 A schematic diagram of the pre-evaporation integrated afterburner, figure 2 It is a cross-sectional view of the pre-evaporation integrated afterburner, image 3 Schematic diagram of the rectifying strut flame holder.

[0018] fuel from figure 2 The fuel inlet hole shown in (5) enters the oil chamber inside the afterburner inner cone, and the afterburner inner cone is gradually heated by the surrounding high-temperature gas, which also makes the temperature of the fuel continue to rise, making the fuel reach an evaporating state or supercritical Then the fuel enters the inside of the rectifier flame stabilizer through the fuel channel between the afterburner inner cone and the rectifier flame stabilizer, and is sprayed from the direct nozzles on bo...

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Abstract

The invention provides a pre-evaporation type integrated afterburner. An oil cavity is formed inside an afterburning inner cone, and is connected with a fuel oil channel inside a rectification support plate flame stabilizer. Fuel oil is heated in the oil cavity to become gas or a supercritical body, and then the gas or the supercritical body enters the fuel oil channel inside the rectification support plate flame stabilizer and is sprayed out from direct-injection type spraying nozzle small holes in the two sides. The spraying nozzle small holes are reasonably formed so that the mixing effect of the fuel oil and the gas can be effectively improved, and the burning efficiency is improved. In addition, a large amount of heat is transmitted to the fuel oil through the afterburning inner cone, so that the self temperature is decreased, and the infrared stealth performance is effectively improved. The pre-evaporation type integrated afterburner has the beneficial effects that on the basis of an integrated afterburner structure, by reasonably leading in the structure of the oil cavity inside the afterburning inner cone and the structure of the fuel oil channel inside the rectification support plate flame stabilizer and reasonably forming the direct-injection type spraying nozzle small holes, the burning efficiency is effectively improved, and the infrared stealth performance is effectively improved.

Description

technical field [0001] The invention belongs to the field of gas turbine engines and relates to a pre-evaporation integrated afterburner. Background technique [0002] In order to improve the combat performance of the aircraft and expand the aircraft envelope, the power plant of military fighter jets often increases thrust through afterburner. At present, the power units of the main fighters in active service of the air forces of various countries in the world all use afterburning turbofan engines. The afterburner of a turbofan engine is composed of internal and external mixing diffusers, fuel nozzles, flame stabilizers, shockproof heat shields and cylinders. The development process of the afterburner is a process of continuously improving the afterburner temperature, combustion efficiency and combustion stability, reducing fluid loss, reducing weight, and improving reliability and applicability. As for the combustion efficiency, since the airflow entering the afterburner ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/30F23R3/18
CPCF23R3/18F23R3/30
Inventor 张群宋亚恒李承钰寇睿汪玉明黎超超邢力闫东博杨省喆李逸飞
Owner NORTHWESTERN POLYTECHNICAL UNIV
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