Gas-solid two-phase jet type active fire resistance and explosion suppression method

Abstract

The invention provides a gas-solid two-phase jet type active fire resistance and explosion suppression method, which is suitable for fire resistance and explosion suppression in industrial pipelines used for conveying combustible gases with explosive risks and is also suitable for explosion suppression in lanes in the case of underground coal mine gas explosion. Two flame sensors and two powder storage pipes are arranged on the outer wall surface of a pipeline, an ABC powder extinguishing agent fills up the powder storage pipes, in the case of combustible gas combustion or explosion in the pipeline, the flame sensors can be used for detecting flame signals and transmitting the flame signals to a collector, the collector outputs a signal to a controller, the controller sends a command to drive a solenoid valve to open, after the solenoid valve is open, high pressure nitrogen in a high pressure nitrogen source is sprayed into the pipeline together with the ABC powder extinguishing agent by means of a pressure relief valve, the solenoid valve and the powder storage pipes, so as to form a high pressure gas-solid two-phase jet curtain to quickly extinguish the flame and prevent the continuous spread of combustion or explosion. By adopting the method, the problem that the existing explosion suppression facilities cannot prevent spread of multiple times of explosion and cannot dilute harmful gases is solved.

Description

technical field [0001] The invention relates to a method for active fire arresting and explosion suppression by a gas-solid two-phase jet, which is especially suitable for fire arresting and explosion suppression in industrial pipelines transporting combustible gases with explosion hazards, and is also suitable for tunnels where gas and dust explosions occur in coal mines explosion suppression. Background technique [0002] Since the founding of New China, there have been 24 accidents in coal mines across the country that killed more than 100 people, resulting in 3,780 deaths, including 21 gas (coal dust) explosion accidents, and 3,424 deaths. The number of accidents and the number of deaths accounted for 87.5% respectively. and 90.58%. The "Coal Mine Safety Regulations" stipulates that explosion isolation (suppression) facilities should be installed at the coal roadway driving face of high gas mines, and mines with coal dust explosion hazard coal seams must have measures t...

AI Technical Summary

Problems solved by technology

[0004] (1) The effective application range of passive explosion-proof facilities is narrow, and most of them are disposable devices. However, multiple explosions sometimes occur in coal mines. At this time, passive explosion-proof devices will lose their explosion-proof effect

[0005] (2) The anti-explosion agent of the automatic anti-explosion device basically has only one component of powder, which does not have the ability to dilute harmful gases, and cannot avoid the spread of harmful gases, resulting in a wider range of casualties

Images