Afterburner adopting planar fan nozzles for oil supply

Abstract

The invention discloses an afterburner adopting planar fan nozzles for oil supply, and belongs to the field of aero-engines. The afterburner adopting the planar fan nozzles for oil supply is characterized in that supporting plates are arranged on an oil supply device in the afterburner, and are uniformly arranged along the circumference of the afterburner in the perpendicular direction; and oil spraying rods are arranged on the inner sides of the supporting plates in the radial direction, the planar fan nozzles are arranged on the side walls of the oil spraying rods in the radial direction, and the opening cross section of each planar fan fuel nozzle is V-shaped. According to the design of the afterburner adopting the planar fan nozzles for oil supply, the fuel spray extending angle is enlarged, the number of the nozzles is reduced, the diameter of each nozzle is increased, and meanwhile, the fuel radial and circumferential concentration distribution is more uniform, so that reliable and stable combustion of the afterburner is facilitated, and the problems in the prior art are solved.

Description

technical field [0001] The invention belongs to the field of aero-engines, and specifically refers to an afterburner which adopts a flat fan-shaped nozzle for oil supply. Background technique [0002] Since the last century, the afterburner has been more and more widely used in aero-engines. In order to improve the combat performance and flight envelope of military fighter jets, it is necessary to increase the fuel atomization effect in the afterburner chamber so that the fuel and air are completely mixed and the fuel is evenly distributed in space. The quality of the fuel atomization effect determines the quality of the combustion chamber's working characteristics. Therefore, fuel atomization research is a very important part of aero-engine research. [0003] At present, the fuel injection rod in the afterburner chamber of the common turbofan engine usually adopts a direct injection fuel nozzle, the fuel spray has a small expansion angle, the atomization effect is poor, a...

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Problems solved by technology

[0003] At present, the fuel injection rod in the afterburner chamber of the common turbofan engine usually adopts a direct injection fuel nozzle, the fuel spray has a small expansion angle, the atomization effect is poor, and the equivalent diameter of the nozzle is small, which can easily lead to nozzle blockage, which is serious Affect the stability and reliability of the engine combustion chamber

With the rapid development of aviation technology, modern advanced fighters have higher and higher requirements on the performance of aero-engines. The direct nozzles on the fuel injection rods in the traditional afterburner have poor atomization effect, which can easily lead to clogging and coking when heated. , The problem of uneven radial and circumferential concentration distribution of fuel is becoming more and more prominent, which is not conducive to the reliable and stable combustion of the afterburner, and seriously affects the overall performance of the aero-engine

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