Integrated afterburner with grid-structure rectification supporting plate flame stabilizers

Abstract

The invention provides an integrated afterburner with grid-structure rectification supporting plate flame stabilizers. The rectification supporting plate flame stabilizers in the radial direction areuniformly distributed on a thrust augmentation inner cone in the circumferential direction; the rectification supporting plate flame stabilizers in the circumferential direction perpendicularly intersect with the rectification supporting plate flame stabilizers in the radial direction and surround the thrust augmentation inner cone for one circle; the cross-sectional shape of the rectification supporting plate flame stabilizers in the radial direction is same as that of the rectification supporting plate flame stabilizers in the circumferential direction; and through the net-shaped structuraldesign of the rectification supporting plate flame stabilizers, a back flow area which is uniform and stable and has the certain fuel gas back flow amount and the appropriate size can be effectively formed on the downstream. Fuel oil enters the rectification supporting plate flame stabilizers through a fuel oil channel, is heated through high-temperature incoming gas and then is sprayed out through main fuel oil spray nozzles and standby fuel oil spray nozzles which are located on the two sides of the V shapes of the rear of the rectification supporting plate flame stabilizers, the fuel oil atomization degree and mixing of fuel oil and air can be effectively enhanced, and the burning stability and burning efficiency are improved.

Description

technical field [0001] The invention belongs to the field of gas turbine engines, and in particular relates to an integrated afterburning chamber of a rectifying strut plate flame stabilizer with a grid structure. Background technique [0002] The power plant of military fighter jets often increases thrust through the 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 is located between the gas turbine and the nozzle, and is an important part of the aero engine. By injecting additional fuel into the high-temperature and high-speed gas flowing out of the turbine, it can greatly increase the temperature of the gas and increase the thrust of the engine in a short time. Generally, the airflow entering the afterburner first passes through a diffuser to reduce the velocity of the flow. But even after diffusion, the gas flow rate is still too hig...

AI Technical Summary

Problems solved by technology

[0004] For the afterburner, the improvement of fuel combustion efficiency and combustion stability is very important. The fuel oil circuit design and injection method are different, which can greatly affect the atomization and evaporation effect of the fuel in the afterburner, thereby further affecting the combustion. Indoor combustion efficiency and combustion stability

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