Dual-fire-proof and dual-explosion-proof blocking device and method for gas pipeline

Abstract

The invention discloses a dual-fire-proof and dual-explosion-proof blocking device and method for a gas pipeline, and relates to the field of fire prevention and explosion prevention of gas pipelines. The dual-fire-proof and dual-explosion-proof blocking device structurally comprises the gas pipeline, flame-stopping pipelines, flame sensors, a wire, a controller, electromagnets, electromagnetic coils, a blocking baffle, a blocking valve and a baffle groove. When a fire or an explosion happens to the gas pipeline, the flame sensors detect flame signals and then transmit the flame signals to the controller through the wire, the controller controls a power supply to stop supplying power to the electromagnetic coil on the left side, and the blocking baffle can be opened under the effect of gravity at the moment to stop transmission of gas in the gas pipeline; and even if the blocking baffle cannot operate normally due to faults, when flames of the fire or the explosion pass through the flame-stopping pipelines on the left side and the right side, spreading of the flames can be prevented under the wall effect of small pipes in the flame-stopping pipelines, and accordingly dual-fire-proof and dual-explosion-proof functions are achieved. Meanwhile, the dual-fire-proof and dual-explosion-proof blocking device also has the flame return preventing capacity.

Description

technical field [0001] The invention relates to the field of fire prevention and explosion prevention of gas pipelines, in particular to a double fireproof and explosion-proof blocking device and a blocking method for gas pipelines. Background technique [0002] With the continuous adjustment of my country's energy structure, the utilization of gas is also increasing. Gas is transported through gas pipelines. During the transportation process, the biggest safety hazards are fire and explosion. In recent years, there have been many gas pipeline fires and explosion accidents in our country, causing casualties and property losses. [0003] At present, my country's fire and explosion protection technology for gas pipelines is not mature enough, mainly reflected in the low reliability and poor anti-backfire ability. For example, the quick blocking device installed in the inflammable and explosive gas delivery pipeline announced by the authorized announcement number CN201680110U...

AI Technical Summary

Problems solved by technology

Although a gas pipeline fireproof barrier device announced by the authorized announcement number CN204910557U is designed with a backfire-proof structure, its reliability is poor, because no matter from which end a fire or explosion accident occurs, there is only one fireproof or explosion-proof opportunity. If the fire barrier device breaks down and a fire accident happens again, the harm caused can be imagined

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