Helical pipe used for researching detonation wave propagation characteristic

Abstract

The invention provides a helical pipe used for researching the detonation wave propagation characteristic. The helical pipe comprises a helical plate, a first helical pad, a second helical pad, a sootiness plate and an annular pad. The helical plate compacts the first helical pad and the second helical pad between the upper and lower surfaces of the helical plate through bolts, the diameter of the first helical pad is larger than that of the second helical pad, the sootiness plate is embedded between two helical pads and aligns to the upper surfaces of the two helical pads, the annular pad is arranged between the upper surfaces of the two helical pads and the upper surface of the sootiness plate and the lower surface of the helical plate, and the lower surface of the sootiness plate, opposite side surfaces of the two helical pads and the upper surface of the helical plate form a detonation wave propagation channel. According to the invention, the detonation wave can be propagated continuously in a multi-circle annular channel, and the phenomenon, of the detonation wave, which cannot be observed in a low-angle bend pipe can be researched.

Description

Technical field [0001] The invention relates to a device for testing the propagation of detonation waves, in particular to a spiral pipe for studying the propagation characteristics of detonation waves. Background technique [0002] Detonation is a combustion process accompanied by the release of a large amount of energy. The supersonic detonation wave in the detonation process is different from the slow-propagating deflagration wave. The combustion in the detonation wave is induced by adiabatic shock wave compression, and the combustion exotherms further Cause the self-sustained propagation of detonation waves. [0003] Because detonation combustion has the characteristics of fast energy release and high thermal efficiency, it has been used in detonation propulsion technology. Especially the rotary detonation engine, as a new type of power propulsion device, has received extensive attention from scholars at home and abroad. It is inhaled from the closed end to form a continuous ...

AI Technical Summary

Problems solved by technology

[0004] When the detonation wave propagates in the straight pipe, it is a plane detonation macroscopically, but in the circular pipe, the detonation wave front is curved in the radial direction, which makes the detonation wave in the curved pipe The propagation process is more complicated

For the stable propagation mode, the structure of the detonation wave front will not change, and its propagation law can be obtained through the experiment through a 180-degree bend, but for the unstable propagation mode, the detonation wave is only studied in a single-circle ring The law of propagation is far from enough

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