Double-oil-passage hedging direct injection nozzle

Abstract

The invention provides a double-oil-passage hedging direct injection nozzle. The overall manner of the nozzle is the direct injection nozzle, and fuel is transported into the nozzle through upstream pressurization, the nozzle is provided with two transport oil paths including a central oil path and an outer ring oil path, at the tail end of a straight section of the nozzle and an expansion section, the fuel of the outer ring oil path enters the central oil path in the opposite direction, and two paths of fuel generates collision and breaking; the structure can effectively improve the fuel atomization effect, accelerate fuel breaking and atomization and make a combustion chamber burn more stably; and an outlet is in a petal type and has a certain inclination angle, and therefore the fuel injection angle can be increased, the contact area between the fuel and air is increased, and the combustion effect is improved.

Description

technical field [0001] The invention belongs to the field of combustion chambers of gas turbines, and in particular relates to a double-oil-way opposing direct injection nozzle. Background technique [0002] The basic performance and structural distribution of modern aero-engine combustors have reached a fairly high level, but for modern aero-engine combustors, there are still a lot of problems and challenges, so there is still room for improvement in structural design and performance , such as the development and application of new materials, new processes, new structures, and new concepts, these are the sources to ensure the continuous progress of its technology. [0003] In order to improve the performance of the aero-engine combustion chamber, the internal fuel atomization effect is an important part. The quality of the fuel atomization effect determines the performance of the combustion chamber. It is necessary to make the fuel and air completely mixed, and the fuel spa...

AI Technical Summary

Problems solved by technology

At present, the fuel injection in the common combustion chamber usually adopts direct-injection fuel nozzles. The equivalent diameter of the nozzles is small, which can easily lead to nozzle blockage, resulting in obvious total pressure loss, and affecting the stability and reliability of the engine combustion chamber; direct injection The contact area between the cylindrical fuel jet and the airflow from the type nozzle is too narrow, and the fuel spray expansion angle is small, and the atomization effect is poor, resulting in insufficient fuel atomization effect, which may lead to poor combustion stability in the combustion chamber under complex working conditions, and the engine High fuel consumption rate affects the overall performance of the combustion chamber

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