Annular oil supply type integrated afterburner

Abstract

The invention provides an annular oil supply type integrated afterburner. A worm gear rear rectification supporting plate and a flame stabilizer are integrated, two stages of rectification supportingplates and the flame stabilizer are subjected to radially misplaced structure design, and in this way, a stable low speed backflow area large in size range and high in swirl flowing is more easily formed at the downstream of the annular oil supply type integrated afterburner. A whole-ring groove stabilizer is arranged between the two stages of rectification supporting plates. An oil cavity is formed inside a force-adding inner cone and is connected with a fuel channel inside the first-stage rectification supporting plate, and after absorbing heat of the force-adding inner cone, fuel finally reaches the inside of the whole-ring groove stabilizer. Main fuel is sprayed out longitudinally from the two sides of the whole-ring groove stabilizer, on-duty fuel is sprayed out from a groove of the whole-ring groove stabilizer to form on-duty flame, and soft ignition is achieved. By reasonably forming nozzle small holes, the atomization effect of the fuel can be effectively improved, and thus thestability and combustion efficiency are improved. The annular oil supply type integrated afterburner has the advantages that the two stages of rectification supporting plates which are radially misplaced are adopted, and a better backflow area is formed; meanwhile, through longitudinal oil spray of the whole-ring groove stabilizer, the fuel-gas mixing effect is improved, the on-duty flame is formed, the soft ignition is achieved, and thus the combustion stability is effectively improved.

Description

technical field [0001] The invention belongs to the field of gas turbine engines, and in particular relates to an annular fuel supply type integrated afterburner so as to improve the combustion efficiency in the 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. 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. The new generation of fighter jets needs to achieve supersonic cruise in the non-afterburner state, which requires the engine and afterburner to be more compact in structure, reduce the number of afterburner components, reduce the total pressure loss in the non-afterburner state, and increase the thrust in the in...

AI Technical Summary

Problems solved by technology

However, the recirculation zone formed behind the rectifying support plate is relatively small, and the degree of vortex is low. Only a small part of the main fuel injected laterally is entrained into the recirculation zone, and the flame stabilization ability of the flame stabilizer is also very limited.

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