Array self-impact type water-mist cooling device

Abstract

The invention belongs to the technical field of ground experiments for liquid propellant rocket engines and discloses an array self-impact type water-mist cooling device with the aim of resolving theproblem in the prior art of incomplete cooling of a cooling device. The device comprises a fire hydrant, a main liquid supply pipeline and a drainage drum. The drainage drum comprises a drum body andannular liquid collection cavities arranged at two ends of the drum body. One end of the main liquid supply pipeline communicates with the fire hydrant and the other end thereof communicates with oneof the annular liquid collection cavities. At least four injection pipes are arranged between the two annular liquid collection cavities and fixed on the inner wall of the drum body along the axial direction and extend from one end of the drum body to the other end thereof. Lines of main injection holes are arranged along the length directions of the injection pipes. The main injection holes are slant hole passages communicating with the injection pipes. The center lines of two adjacent slant hole passages intersect at one point. After the point of intersection departs from the inner wall of the drum body, two main injection holes firstly intersecting with each other become a pair. Center lines of the main injection holes intersect to form an included angle A. The angular bisector of the included angle A is vertical to pipe walls of the injection pipes.

Description

technical field [0001] The invention belongs to the technical field of liquid rocket engine ground tests, and relates to an anti-burn-through water spray cooling device for liquid rocket engine ground tests, in particular to an array self-impact water mist cooling device. Background technique [0002] The cooling device is mostly used in cooling large equipment and auxiliary equipment, and can realize cooling protection for auxiliary equipment or equipment with poor high temperature resistance. During the engine test, a draft tube needs to be installed at the engine flame injection to control the engine flame injection within a specific range and prevent unsafe factors caused by uncontrollable flames. Since the peripheral temperature of the flame injected by the engine is also as high as thousands of degrees, the drainage tube is very close to the peripheral flame, so how to effectively cool the inside of the drainage tube is particularly important. At first, the cooling of...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of insufficient cooling caused by the existing cooling device due to the existence of injection blind spots and poor atomization effect, and provides an array self-impact water mist cooling device

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