Nozzle of interrupted clear water extinguisher

Abstract

The invention discloses a nozzle of an interrupted clear water extinguisher, which comprises a nozzle shell, wherein the nozzle shell is internally and fixedly provided with an interrupted flow guide seat, and the flow guide seat is provided with at least one flow guide column installing hole; cup bottoms of the flow guide column installing holes with cup-shaped structures are provided with a plurality of water spraying holes, and the eccentricities e between the flow guide column installing holes and the water spraying holes are equal to 0.1-3mm; and the flow guide column installing holes are internally and movably provided with a plurality of helical type flow guide columns, the surface of the each helical type flow guide column is provided with at least one helical flow guide groove, and the helical angles alpha of the helical flow guide grooves are equal to 30-60 degrees; and the distance from the bottom of each helical flow guide groove to the axial lead of each helical type flowguide column is less than the semidiameter of each water spraying hole. The ratio of the diameter D of each flow guide column installing hole to the diameter d of each water spraying hole D / r is equal to 2-3. The nozzle not only can extinguish a combustion source with electricity by the clean water, but also is reasonable and simple in structure, safe and convenient in use, and widely used for various fire-fighting lances.

Description

technical field [0001] The invention relates to a fire-fighting fire extinguisher, in particular to a clear water fire extinguisher which can be used to extinguish a charged fire source. Background technique [0002] Clear water has low viscosity, high thermal stability, high density and high surface strength at normal temperature, and it mainly relies on cooling and suffocation to extinguish fire. Each kilogram of water is heated from normal temperature to boiling point and evaporates completely, which can absorb 2593.4KJ of heat, which is unmatched by any other fire extinguishing agent; in addition, the water vapor formed after water is vaporized is an inert gas, and its volume will expand by 1700 times. The expanded water vapor will occupy the space of the combustion area, dilute the oxygen content around the combustion object, prevent fresh air from entering the combustion area, and achieve the purpose of suffocating and extinguishing the fire. Also have the surface are...

AI Technical Summary

Problems solved by technology

The carbon dioxide fire extinguisher has a low level of fire extinguishing, and it is easy to cause frostbite or even suffocation to death; while the 1211 fire extinguishing agent is a substance that destroys the ozone layer and has been eliminated and banned; the dry powder fire extinguisher performs a chemical reaction after the surface of the burning object is heated. Corrosive crystalline substances will be formed on the surface of the burning material, causing corrosion of live equipment and environmental pollution

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