Combustible gas explosion propagation inhibition experiment system and experimental method thereof

Abstract

The invention discloses a combustible gas explosion propagation inhibition experiment system and an experiment method thereof. The experiment system comprises a first pipe body, the first pipe body is communicated with a vacuum pump and a circulating pump, one end of the first pipe body is provided with an ignition device, the other end of the first pipe body is provided with a first valve body, and one side of the first valve body is communicated with the first pipe body, a rectangular cavity part is arranged on the other side of the base; the length and the width of the cavity of the experiment system can be freely adjusted, so that the volume of the cavity is changed, the concentration of water mist can be controlled through atomization duration, and the particle size of the water mist can be adjusted through electromagnetic oscillation frequency; experimental research can be carried out on the synergistic explosion suppression performance of cavities with different sizes and fine water mist with different concentrations and particle sizes, and the cavity size, the water mist concentration and the particle size with the optimal synergistic explosion suppression performance are found out by investigating flame and overpressure data at an inlet and an outlet of the cavity and in the cavity, so that engineering practice is guided.

Description

technical field [0001] The invention relates to the field of combustible gas explosion experiments, in particular to an experimental system and an experimental method for suppressing the propagation of combustible gas explosions. Background technique [0002] Once a gas explosion in a coal mine or a gas explosion in an urban underground pipe gallery occurs, a large number of high-temperature flames, toxic and harmful gases, and a huge shock wave overpressure will be generated in an instant, and will spread rapidly in the coal mine roadway or urban underground pipe gallery, destroying surrounding facilities, Caused a large number of casualties and property damage. How to avoid the explosion, reduce the intensity of the explosion or block the propagation of the explosion in the confined space as much as possible has very important scientific significance and application value for the prevention and control of gas explosion accidents in coal mines and underground pipe corridors...

AI Technical Summary

Problems solved by technology

The study found that the cavity has the function of explosion relief and can inhibit the propagation of gas explosion in a confined space. However, in practical engineering applications, the explosion suppression performance is limited when used alone. It needs to be combined with other explosion suppression technologies to improve the performance of flameout and wave suppression.

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