DEVELOPING OF BLOCKING NOZZLE FOR COMPLEX EXTINGUISHING ON THE INITIAL STAGE OF FIRE

Abstract

After analyzing the presence of fire and technical equipment, in particular fire extinguishing devices, on the fire and rescue engines of the SES of Ukraineunits, we have suggested, developed and constructed a nozzle for obtaining low-frequency air-mechanical foam. This nozzle can serve as a combination of water and foam extinguishing agents to extinguish fires that have not developed into significant areas and sizes.It is preferable to eliminate the fire at the initial stage of its occurrence, preventing the influence of the effects of its dangerous factors on living creatures and the environment. Given the above problem, the authors designed a nozzle with the ability to completely cease the supply of extinguishing agents, using an overhead crane with a handle.At the exit from the fire nozzle, a metal mesh consisting of 1,5 x 1,5 mm tubes is installed. The shell of the nozzle is equipped with rubber overlays on both sides, which will protect arescuer from possible electric shock. The use of such nozzle allows for more efficient elimination of fires and more economical use of extinguishing agents. The technical characteristics are acceptable for the subsequent successful use of the device as intended. Additionally, one of the advantages is the possibility of ceasing the delivery of extinguishing substances in case of changing the position of a rescuer during the elimination of fire, reducing the flow of water and foam, as well as protection against possible electric shock.