On-line Adjustable Gas Generator Using Jet Collision Combustion

Abstract

The invention discloses an on-line adjustable fuel gas generator adopting a jet flow collision combustion mode. The on-line adjustable fuel gas generator is composed of a circular groove combustion chamber, a contraction section and an adjusting plug-cone component, wherein an adjusting plug cone is located on the head portion of the fuel gas generator, and is coaxially installed with the contraction section; the circular groove combustion chamber is formed by combining a front jet panel, a rear jet panel and a body cooling panel; the adjusting plug-cone component is composed of the adjusting plug cone, an action sleeve and a fixed disk; and the adjusting plug cone can move back and forth in the action sleeve, and the adjusting plug cone and the contraction section surface are designed in a matched manner. The on-line adjustable fuel gas generator adopting the jet flow collision combustion mode has the beneficial effects that the structure is compact, the length of the combustion chamber is short, the requirements of the structural size and the cooling area of the combustion chamber are greatly reduced, the fuel gas generator can be suitable for on-line adjustment on various combustion conditions of fuel gas generators of a ground testing system in the aerospace industry, the excellent flame stabilization and the fuel gas mixing ability are achieved, and the exit flow field is uniform.

Description

technical field [0001] The invention relates to a method of organizing combustion by means of jet collision, so as to facilitate the atomization, blending and high efficiency and stability of combustion of liquid fuel, and reduce the structural size and cooling area requirements of the combustion chamber. The multi-working condition gas generator adopts movable plug cone to adjust the throat area on-line for cooling. Background technique [0002] The gas generator is widely used in the aerospace field. It burns the oxidant and fuel according to the mixing ratio required by the design to obtain the gas required by certain pressure, temperature, flow and velocity parameters to achieve specific purposes, such as generating ejection Airflow, drive turbine, generate ejection airflow, etc. The application of gas generators in the field of ramjet engines is mainly manifested in two categories: one is the combustion heater used to heat air in the ground test system of ramjet engine...

AI Technical Summary

Problems solved by technology

The flame tube combustion chamber of an aero-engine has a complex structure and difficult organization of the working process, so it is seldom used in this type of field

The combustion organization technology of fuel injection in the head of the liquid rocket engine is adopted, and the structure is relatively simple, but the fuel is injected, atomized, and evaporated in the combustion chamber, and the diffusion combustion requires a long length of the combustion chamber, thereby increasing the cooling area of ​​the combustion chamber , under long-term working conditions, a large-scale cooling channel needs to be arranged on the body of the combustion chamber; the outlet throat cannot be adjusted, and it is difficult to adjust the outlet flow and Mach number during the working process, which makes the gas in the form of a heater generate It is difficult for the generator to simulate the airflow environment changes of the aircraft under variable working conditions, and it is also difficult for the pipeline rocket ramjet burner generator to adapt to the parameter changes of the ram air and organize the afterburning process reasonably

Images