Experimental study on gas explosion shock wave propagation in different types of pipelines

doi:10.16265/j.cnki.issn1003-3033.2018.03.014

Abstract

Abstract: In order to explore the propagation law of gas explosion shock waves in different types of pipeline,using the pipes of "L" type,"T" type and cross type to simulate the underground roadway for experiments of gas explosion,which using gas combustion explosion test system.Pressure values at different positions in the pipe are detected,pressure variation rule of gas explosion shock wave in the front and rear position of turns and bifurcation structures of different pipe types is studied.The experimental results show that the pressure peak value is the highest on the lateral wall of "L" pipe bend.The bifurcation structure of "T" type and cross pipe can effectively improve the pressure build-up,but the degree of improvement for cross-shaped pipe is less than "T" pipe.The damping effect of shock wave pressure and speed on "L" type,"T" type and cross type pipes is gradually enhanced.

Key words: gas explosion, shock wave, experiment, pressure, monitoring point

CLC Number:

X936

ZHAO Dan, QI Hao, PAN Jingtao, JIA Jinzhang. Experimental study on gas explosion shock wave propagation in different types of pipelines[J]. China Safety Science Journal, 2018, 28(3): 79-83.

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