Cavity trapped vortex and rectifying support plate combined type integrated afterburner

A technology of afterburning chamber and rectifying support plate, applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc., can solve the problems of poor ignition conditions, poor combustion stability and combustion efficiency, and achieve increased entrainment capacity, The effect of improving ignition ability, ensuring combustion stability and combustion efficiency

Inactive Publication Date: 2019-03-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problems of poor ignition conditions, combustion stability and combustion efficiency are still not solved

Method used

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  • Cavity trapped vortex and rectifying support plate combined type integrated afterburner
  • Cavity trapped vortex and rectifying support plate combined type integrated afterburner
  • Cavity trapped vortex and rectifying support plate combined type integrated afterburner

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Embodiment Construction

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

[0017] to combine figure 1 , figure 2 with image 3 , the present invention provides an integrated afterburner that can effectively enhance the swirl strength in the recirculation zone and enhance ignition stability. figure 1 It is a schematic diagram of the internal structure of the integrated afterburner combined with the concave cavity trapped vortex and the rectifying strut, which is used to determine the angle, quantity and geometric distribution of the two-stage rectifying strut. figure 2 is the cross-sectional structure diagram of the integrated afterburner, image 3 It is a partial enlarged view of the concave cavity duty stabilizer, which is mainly used to determine the structural shape of the concave cavity.

[0018] Such as figure 2 As shown, the flame-stabilizing structure of the integrated afterburner includes rectifying strut flame stabilizers 2 and rece...

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Abstract

The invention provides a cavity trapped vortex and rectifying support plate combined type integrated afterburner. The ignition stability can be improved effectively, and the swirling intensity of a backflow area and the fuel atomization effect are improved, so that the combustion efficiency and stability are improved. A rectifying support plate flame stabilizer is combined with cavity trapped vortex; on one hand, air flow of inner and outer ducts enters a cavity from different positions, and a trapped vortex area is formed; duty-level flame is generated, so that mixed gas of a main flow area is ignited; on the other hand, a stable main backflow area with a certain gas backflow amount and in an appropriate size is formed downstream; and ignited high-temperature air and air in the outer ductare promoted to mix, and play a role in rectification and stabilization of combustion. The integrated afterburner has the advantages that the structural design of a cavity duty stabilizer is added atthe rear edge of the rectifying support plate flame stabilizer on the original basis of the integrated afterburner, and the ignition ability under the rich oil and high altitude conditions can be improved effectively; and the high combustion stability and efficiency are ensured.

Description

technical field [0001] The invention belongs to the field of gas turbine engines, and relates to a combined afterburning chamber of a concave cavity dwelling vortex and a rectifying support plate, which can be preferably applied to the afterburning chamber of a gas turbine engine. Background technique [0002] The afterburner is generally used in military aeroengines, and is located between the turbine and the tail nozzle. It can obtain additional thrust by performing secondary fuel injection combustion on the gas generated in the main combustion chamber and passed through the turbine. 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. For combustion efficiency and combustion stability, due to the low total pressure at the inlet of the afterburner, the high air velocity, the flow velocit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/18
CPCF23R3/18
Inventor 张群王鑫海涵张鹏杨福正曹婷婷刘强李程镐
Owner NORTHWESTERN POLYTECHNICAL UNIV
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