Fine water mist fire extinguishing system capable of being mixed with fire extinguishing liquid during application and application method thereof

Abstract

The invention relates to a fine water mist fire extinguishing system capable of being mixed with a fire extinguishing liquid during application and an application method thereof. The fine water mist fire extinguishing system comprises a fire extinguishing liquid mixing system, a water storage tank, a fine water mist pump set and a fine water mist spray head which sequentially communicate through pipelines, wherein the fire extinguishing liquid mixing system comprises a pressure reduction and pressure-taking device, a venturi type proportional mixer and a flow adjusting device which communicatewith each other, the venturi type proportional mixer further communicates with a fire extinguishing liquid tank, an outlet of the flow adjusting device communicates with a water inlet of the fine water mist pump set, and an inlet of the pressure reduction and pressure-taking device communicates with a water outlet of the fine water mist pump set; and part of high-pressure water output by the finewater mist pump set flows through the venturi type proportional mixer after undergoing the pressure reduction by the pressure reduction and pressure-taking device, the fire extinguishing liquid enters the venturi type proportional mixer through a pressure difference and then enters the fine water mist pump set to be output, and so that the mixed application of the water and the fire extinguishingliquid is realized. According to the fine water mist fire extinguishing system capable of being mixed with the fire extinguishing liquid during application and the application method thereof, the instant mixing of fine water mist and the fire extinguishing liquid in the fire extinguishing process can be realized, moreover, the structure and operation is simple, the mixing precision is high, the mixing ratio is adjustable, and cleaning is easy.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a fine water mist fire extinguishing system that can be mixed with fire extinguishing liquid and an application method thereof. Background technique [0002] Fine water mist is an efficient fire extinguishing technology, which uses high-pressure water pumps and fine water mist nozzles to decompose the water flow into diameters Dv under higher water pressure 99 (Particle size with a volume fraction of 99%) less than 1000 water mist droplets to extinguish the fire. In recent years, in order to further improve the fire extinguishing effect of fine water mist, people have begun to pay attention to pre-mixing water-based fire extinguishing fluid as a fine water mist additive into water, and then fine-tuning it into fine water mist for fire extinguishing. However, most of these water system fire extinguishing fluids are composed of alkaline salts (as in the paper Fire Safet...

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Problems solved by technology

However, most of these water system fire extinguishing fluids are composed of alkaline salts (as in the paper Fire Safety Journal , 41 (2006) 39-45), fluorocarbon surfactants (such as paper Proceedia Engineering , 45 ( 2012 ) 649-654) and other components, which are corrosive to a certain extent, and long-term storage will cause serious corrosion to the fine water mist pump unit, water tank, pipes, valves, etc.

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