Liquid heptafluoropropane fire extinguishing agent low temperature and low pressure atomizing nozzle

Abstract

The invention relates to a low-temperature and low-pressure atomizer for a liquid heptafluoropropane fire extinguishing agent. The low-temperature and low-pressure atomizer comprises a main adapter and an atomizer housing, wherein the atomizer housing is assembled on the main adapter; one end of the atomizer housing is a cone; a plurality of mounting screw holes are formed in the inclined surface of the cone; the plurality of mounting screw holes are arranged annularly; the top end of the cone is the top plane of the atomizer housing; a mounting screw hole is formed in the center of the top plane of the atomizer housing; the plurality of mounting screw holes are used for mounting centrifugal nozzles; a plurality of centrifugal nozzles are connected in parallel to form a nozzle group; the total flow rate of the nozzle group is 4000 g / s and the flow rate of one single centrifugal nozzle is 572 g / s; and the spray cone angle of one single nozzle is within 60 degrees and the spray cone angle of the whole nozzle group is within 120 degrees. The low-temperature and low-pressure atomizer for the liquid heptafluoropropane fire extinguishing agent has the beneficial effects that the flow rate and spray strength of one single centrifugal nozzle are guaranteed and the range of the overall spray cone angle of the atomizer is expanded, the atomization quality of the liquid heptafluoropropane fire extinguishing agent after being sprayed under the conditions of a low temperature and low pressure is effectively improved, so that an excellent total flooding effect of the liquid heptafluoropropane fire extinguishing agent in a protective space is achieved, and therefore, the purpose of effectively putting out the fire is effectively achieved.

Description

technical field [0001] The invention relates to fire-fighting equipment, in particular to a low-temperature and low-pressure atomizing nozzle for liquid heptafluoropropane fire extinguishing agent, which can effectively improve the atomization performance of the liquid heptafluoropropane fire extinguishing agent after being sprayed under low temperature and low pressure conditions, so that the heptafluoropropane fire extinguishing agent can form well in the protected space The total submersion effect can achieve the purpose of effectively extinguishing the fire. Background technique [0002] Heptafluoropropane (HFC-227ea) is a chemically synthesized clean gas fire extinguishing agent. It is colorless, odorless, non-toxic, non-conductive, and does not pollute the protected object. In particular, it has no destructive effect on the atmospheric ozone layer, and is an ideal substitute for haloalkane fire extinguishing agents at this stage. The fire extinguishing agent has ...

AI Technical Summary

Problems solved by technology

When the working environment temperature is -15°C, if a conventional nozzle is used, the heptafluoropropane fire extinguishing agent cannot be vaporized after being sprayed, and it will be sprayed into the protection space in liquid form, which will not form a total submersion effect in the protection space, causing serious damage to the fire. certain degree of difficulty

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