Experimental device and experimental method for suppressing gas explosion by inert gas coupled blast wave

Abstract

The invention discloses an experimental device and experimental method for suppressing gas explosion by an inert gas coupled blast wave. The device comprises a base, wherein the base is fixedly connected with an air blower, a first intelligent gas distribution system, a second intelligent gas distribution system, a third intelligent gas distribution system, a first vacuum pump, a second vacuum pump, a third vacuum pump, a circulation pump, a first inert gas cylinder, a second gas cylinder, a first gas cylinder, a set of support columns, and a set of support frames; upper ends of each of the support columns are respectively fixedly connected with support plates; the upper ends of the support plates are respectively provided with an electronic vacuum gauge, an electronic ignition system, a flame high-speed data collector, a data processing system, and a pressure high-speed data collector; lower ends of a first gas distribution pipe, a second gas distribution pipe, a first propagation pipe, and a second propagation pipe are fixedly connected to the support frames by bolts and nuts; and two semi-circular sealing gaskets are disposed between one end of the first gas distribution pipe and one end of the second gas distribution pipe.

Description

technical field [0001] The invention relates to the field of experimental devices for suppressing underground gas explosions in coal mines, in particular to an experimental device and method for suppressing gas explosions by coupling explosion waves with inert gas. Background technique [0002] Coal resources are one of the important energy sources supporting China's national economy, but frequent gas explosion accidents seriously threaten the production safety of coal mines. At the same time, most of the particularly large explosion accidents in coal are caused by gas explosions, which bring great losses to the development of the national economy and the safety of people's lives and properties every year. Therefore, relevant seniors at home and abroad have carried out a large number of gas explosion suppression experiments. [0003] The explosion limit of gas is 5% to 16%. When the gas concentration is 9.5%, the most powerful, inert gas is, inert gas is an effective way to...

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Problems solved by technology

Because of its high temperature and heat radiation, the flame front will cause serious damage to underground personnel and equipment, while the explosion shock wave is even more harmful and can cause a devastating blow to people and equipment

At present, the research on gas explosion suppression technology mainly focuses on the suppression of flame, while the research on the suppression effect of shock wave is less

Moreover, there is a lack of experimental devices and methods for research on suppressing blast shock waves, and there is even a lack of experimental equipment and methods for suppressing blast shock waves with blast shock waves.

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