fire extinguisher head

Abstract

The invention discloses a fire monitor head, and belongs to the technical field of fire water monitors. The fire monitor head comprises a tapered section and a straight pipe section, wherein a high-pass low-resistance grid type rectifier is arranged inside the straight pipe section; a bottom end flange is welded at one end of the straight pipe section; the bottom end flange is in paired connection with a flange on an S bend of a fire monitor platform through bolts 9; the other end of the straight pipe section is connected with one end of the tapered section through a connecting pipe; a thickened fire monitor mouth is arranged at the other end of the tapered section. According to the design of the fire monitor head disclosed by the invention, the fire monitor head contract angle design with higher water gathering performance is adopted; the structural matching relation among the nozzle caliber, the fire monitor taper and the length is optimized and more reasonable; in addition, the novel high-pass low-resistance grid type rectifier is designed; a spiral type rifling is designed and processed on the inner surface of the fire monitor tube to enable the jet flow medium of the fire monitor to generate axial vortex; the fire monitor head can play the water gathering effect to the most extent, has the processing economic efficiency and meets the quality technical requirements on the inner surface of the fire monitor head part.

Description

technical field [0001] The invention relates to the technical field of fire-fighting water cannons, in particular to a fire-fighting cannon head design with a large range and high water accumulation, which is mainly used in large-scale marine fire-fighting ships, sea patrol ships, warehouses and docks, as well as oil storage tank areas, airports and high-speed railways Large-scale fire nozzles in large space buildings such as stations and large fire places. Background technique [0002] With the rapid development of the national economy, various public gathering buildings such as large exhibition halls, gymnasiums, large shopping malls, high-speed rail stations, and passenger transport halls have increased sharply; Buildings continue to emerge; while the shipping industry is booming, the fire situation is becoming increasingly severe; piracy still exists, and the competition for marine resources is almost white-hot. When a fire or danger occurs, because the fire characteris...

AI Technical Summary

Problems solved by technology

Due to the objective existence of jet flow breakage and instability, as well as the limitation of the maximum flow rate and maximum head of the fire protection system, the design of traditional nozzles pays more attention to the maximum range, jet flow and its atomization ability, so as to give priority to meeting the needs of large firefighters. The needs of area fire extinguishing cannot be taken into account at the same time for the concentration of jet flow, that is, the degree of water accumulation.

In recent years, with the advancement of technology, the technical level of the fire monitor system, especially the power sub-system, has been steadily improved, and the performance parameters of the main pump have also been greatly enhanced, which can already meet the basic design conditions for large-range, high-water accumulation fire monitors; but due to For a long time, insufficient attention has been paid to the research on the water gathering performance of fire monitors, resulting in serious shortages in theoretical research, design criteria and experience, and test data in this field; Interlocking with high-performance fire water cannons with long range and high water accumulation to achieve early warning, achieve the rapid response capability of starting immediately after discovery, shorten the reaction time to the greatest extent, and eliminate fire or danger at the initial stage

Early fires have the characteristics of relatively small fire area and relatively low fire intensity. At this time, what is most needed is the fixed-point fire fighting of high-concentration and large-flow fire extinguishing agents. Traditional conventional fire water cannons are far from meeting this requirement.

[0005] After searching, no relevant reports have been found on the high-efficiency long-range and active fixed-point fire fighting nozzles with large range and high water accumulation

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