Self-oscillation jet impact-type nozzle for atomizing complex fluids

Abstract

The invention relates to a self-oscillation jet impact-type nozzle for atomizing complex fluids, comprising a fluid collection cavity shell, an injection panel and a resonant cavity shell, wherein the center of the upper part of the fluid collection cavity shell is connected with a supply pipeline through a threaded hole; the fluid collection cavity shell and the injection panel are connected through a flange and are sealed by using a sealing gasket; a cavity between the fluid collection cavity shell and the injection panel is a fluid collection cavity; the center of the bottom of the injection panel is provided with a truncated cone-shaped indent space; two or more spray orifices are symmetrically arranged on the side surface vertical to the truncated cone-shaped indent space; the axes of the spray orifices form certain angle with the central axis of the injection panel, and the axes of all the spray orifices are intersected at one point on the central axis of the injection panel; the side surface of a central truncated cone at the upper part of the injection panel is provided with spray orifice inlets; the spray orifice inlets are provided with internal threads; the resonant cavity shell is provided with resonant cavity inlets; the outer surface of the resonant cavity shell is provided with an external thread; the resonant cavity shell is connected with the injection panel through the internal threads of the spray orifice inlets; and two or more resonant cavities are formed between the resonant cavity shell and the injection panel.

Description

technical field [0001] The invention relates to a self-excited oscillating jet impacting nozzle for complex fluid atomization, which is mainly used in the fields of liquid rocket engine thrust chamber, pre-combustion chamber injector design, liquid atomization and the like. Background technique [0002] Liquid jet impingement is a very effective atomization and mixing method. In the rocket engine thrust chamber using liquid propellants, the impact nozzle has also been widely used, such as the F-1 engine in the "Saturn" -5 launch vehicle used by the American Apollo moon landing program. of the nozzle. Impingement nozzles use the dynamic head of the propellant to destabilize another jet of propellant moving in the opposite direction, thereby breaking up the liquid into ribbons and droplets. [0003] With the pursuit of high-energy energy for aerospace power devices, propellants containing metal particles have become an important development direction of chemical propellants....

AI Technical Summary

Problems solved by technology

At present, conventional Newtonian fluid atomization methods and conventional nozzles (such as pneumatic atomization nozzles, pintle nozzles, etc.) are still used in liquid rocket engines for the atomization of complex fluids. Due to the characteristics of these conventional atomization methods and nozzles, the atomization effect is not very good, and these nozzles are often complex in structure and high in manufacturing cost

Images