Novel explosion-proof pressure relief device and aerosol fire extinguisher using same

Abstract

The invention provides a novel explosion-proof pressure relief device. The novel explosion-proof pressure relief device is characterized in that organic plates with poor compression resistance or inorganic plates or heat-resistant films are adopted to define a closed space; when gas can not flow through the space smoothly, the pressure in the space is increased; and when the pressure exceeds a pressure limit of a heat insulation member, the heat insulation member cracks automatically to release the pressure, and thus explosion is prevented. In a fire extinguisher equipped with the explosion-proof pressure relief device, gas generated by a gas generator enters a dust-removing and cooling device via the explosion-proof pressure relief device rather than entering the dust-removing and cooling device directly. Accordingly, in case of pressure rise due to blockage of the dust-removing and cooling device or accumulation of excessive gases generated by the gas generator, the heat insulation member cracks in advance so that the gas is released into a box body and then discharged through a gas outlet which is formed on the box body, and thus explosion of the fire extinguisher is prevented, the fire extinguisher is safer and more reliable and the service life of the fire extinguisher is ensured.

Description

technical field [0001] The invention relates to a pressure control device for ensuring safe pressure in a closed container, in particular to an explosion-proof pressure relief device for a hot aerosol fire extinguisher. Background technique [0002] Existing aerosol fire extinguishing equipment mainly includes aerosol fire extinguishing bombs and aerosol fire extinguishing devices, which are generally composed of a shell or box, a gas generator, an ignition mechanism, a cooling layer module or a cooling system. When in use, the pyrotechnic powder column is ignited by the ignition mechanism, burns to form an aerosol containing a large amount of solid particles, produces a sufficient concentration of suspended solid particles and inert gas, releases them in the ignition space, inhibits the flame from burning, and extinguishes the flame. Compared with other fire extinguishing agents, hot aerosol fire extinguishing agent has the advantages of simple installation, low price, no c...

AI Technical Summary

Problems solved by technology

[0004] With this assembly structure, the gas generator and the cooler are actually integrated, and the fire extinguishing gas generated by the gas generator can only be discharged through the cooler as a gas outlet. If the gas generator generates gas too fast or too If there are too many, or when the cooler is blocked for some reason, the fire extinguishing gas will not be released smoothly, which will cause the air pressure in the cooler to increase rapidly, and eventually cause the pressure in the cooler to exceed its acceptable range, resulting in an explosion , affecting the safety and service life of the hot aerosol fire extinguishing device

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