Afterburner oil spraying device with high fuel oil regulation ratio

Abstract

The invention relates to the technical field of aviation power, and discloses an afterburner oil spraying device with a high fuel oil regulation ratio. The afterburner oil spraying device comprises anannular pipe, an oil inlet pipe, an adapter seat and oil spraying rods, wherein large oil spraying rods and small oil spraying rods are arranged on the inner side and the outer side of the annular pipe correspondingly. Each large oil spraying rod comprises an oil spraying rod inner wall and an oil spraying rod outer wall, the oil spraying rod inner walls and the oil spraying rod outer walls are connected with the adapter seat, a boss is fixedly arranged on the inner side of each oil spraying rod inner wall, a stop block is arranged on the upper side of each boss, a compressed spring is arranged on each stop block, oil passing holes communicating with the oil spraying rod outer walls are formed in the oil spraying rod inner walls on the annular sides of the stop blocks, and second oil nozzles communicating with the outer sides of the oil spraying rod inner walls are arranged on the outer annular sides of the oil spraying rod outer walls. According to the afterburner oil spraying device, the problems of high complexity and difficult joint matching work debugging of an existing engine afterburner, a control system and an oil way system can be solved, reliable operation of the oil spraying device under the condition of high regulation ratio can be realized, and efficient and stable combustion of an afterburner in a wide flow range can be realized.

Description

technical field

[0001] The invention relates to the technical field of aerodynamics, and is specifically applied to an afterburner of a small turbojet engine, in particular to an afterburner fuel injection device with a high fuel adjustment ratio. Background technique

[0002] The aeroengine with an afterburner has a larger thrust range, and the greater the thrust, the more complex the oil circuit system of the afterburner. At present, the aeroengine with the smallest thrust class has three oil circuits in its afterburner: the starting oil circuit, the first oil circuit used in the small afterburner and intermediate afterburner states, and the second oil circuit used in the full afterburner state. The starting oil circuit is only used during afterburner. These oil circuits match the complex control sequence and are opened and used in different stages. As the thrust of the engine increases, the fuel system becomes more complex, with as many as 10 oil circuits, which increas...

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