Online adjustable fuel gas generator adopting jet flow collision combustion manner

Abstract

The invention provides an online adjustable fuel gas generator adopting a jet flow collision combustion manner. The online adjustable fuel gas generator is composed of an annular slot combustion chamber, a convergence segment and an adjustment plug cone, and the adjustment plug cone is located at the head of the combustion chamber; the combustion chamber is of an annular-slot-shaped structure and is composed of a front jet panel, a rear jet panel and a side body portion cooling panel; a plurality of sets of rotational flow type air feeding holes of different rotation directions are formed in the side body portion cooling panel of the combustion chamber to provide liquid film type regeneration cooling for the combustion chamber body portion and enhance mixing of fuel gas; and the adjustment plug cone molded surface and the convergence segment molded surface are designed in a matched manner, the adjustment plug cone can move front and back, the relative position is manually set, or the size of the outlet throat portion is subjected to online self-adaption adjustment based on combustion chamber pressure. The online adjustable fuel gas generator is compact in structure, the length of the combustion chamber is small, the structural size and cooling area requirements of the combustion chamber are greatly lowered, the online adjustable fuel gas generator can be adapted to online adjustment of fuel gas generators of ground test systems in the aerospace field in various combustion working conditions and has excellent flame stability and fuel gas mixing capacity, and an outlet 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

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