Swept back arc type pneumatic atomizing evaporative stabilizer

Abstract

The invention relates to a ramjet combustion chamber, and provides a sweepback arc-shaped pneumatic atomizing evaporating stabilizer. The problems that existing mechanical flame stabilizers have largepneumatic loss, narrow flame stabilization range and complex welding process, and consequently the working reliability is low, and the requirement of efficient flame stabilization under the high Machnumber cannot be met are solved. The stabilizer includes a circumferential evaporating pipe, an annular disturbing fluid is arranged in the direction of flow coming from the evaporating pipe, and oneor more rows of multiple circumferential distributed evaporating holes are formed in the pipe wall of the back side of the circumferential evaporating pipe; the annular disturbing fluid includes a front annular body, and further includes an inner annular face and an outer annular face which are connected with the front annular body; the front end of the front annular body is provided with a plurality of air introducing ports communicating with the circumferential evaporating pipe, and the rear end of the front annular body is connected with the circumferential evaporating pipe; and a profileat the circumferential connection among the front annular body, the outer annular face and the inner annular face is internally provided with oil supply pipes communicating with external fuel oil, oilinjection nozzles are formed in the oil supply pipes located at the air introducing ports, and the spraying direction of the oil injection nozzles intersects with the direction of flow incoming.

Description

technical field [0001] The invention relates to a combustion chamber of a ramjet engine, in particular to a sweeping arc type aerodynamic atomization and evaporation stabilizer. Background technique [0002] The combustion chamber of the ramjet engine is the place where the chemical energy of the fuel is converted into kinetic energy. How to realize the wide range, efficient and stable combustion of the ramjet engine under the conditions of long range, high altitude, and high speed is the key to the design of the combustion chamber. Under the condition of high-speed incoming flow, in order to ensure the stable combustion of the flame in the combustion chamber of the ramjet, it is necessary to establish a local low-velocity recirculation zone in the combustion chamber to create the conditions that the flame propagation speed is equal to the incoming flow speed and the fuel residence time is greater than the ignition delay time. Persistence and propagation of the flame through...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of large aerodynamic loss, narrow flame stabilization range and complicated welding process of existing mechanical flame stabilizers, resulting in low reliability of work and failure to meet the requirements of efficient flame stabilization at high Mach numbers, the present invention provides a swept back arc Type Pneumatic Atomization Evaporation Stabilizer

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