CN201283178Y - Fire-extinguishing system using clear gas as sponging agent - Google Patents

Abstract

The utility model relates to an extinguishing system which is formed by clear gas fire-extinguishing agent and fire foam, and uses clear gas as sponging agent. A foam liquid supply device is communicated with a gas foam mixer through a pipeline, and the clear gas fire-extinguishing agent is communicated with the gas foam mixer through a pipeline, and the outlet of the gas foam mixer is communicated with a foam generator through a pipeline. The extinguishing system has the advantages that the problem of difficult extinguishment of burnable liquid with low boiling point is solved, and the technical problems which are wanted to be solved by people but have not been solved are solved.

Description

With the fire extinguishing system of clean gas as blowing agent

Technical field

The utility model relate to a kind of by clean gas extinguishing chemical and fire foam constitute with clean gas as the fire extinguishing system of blowing agent, belong to fire-fighting system and make the field.

Background technology

1, HFC-227ea is a kind of clean gas extinguishing chemical.

HFC-227ea extinction using gas medicament, chemical name is a heptafluoro-propane, chemical molecular formula is CF3CHFCF3, be to meet the clean gas extinguishing medium that National Fire Protection Association (NFPA) (NFPA) formulates the NFPA-200 code requirement, the characteristics of peace are the extinguishing chemicals of nonconducting, the volatile or gaseous state of ＂, in use do not stay residue ＂.Simultaneously, HFC-227ea clean gas extinguishing chemical environmental sound, the phase that retains in nature is short, the protection zone that fire-fighting efficiency is high and the nontoxic staff of being applicable to resides.

The fire-fighting principle of HFC-227ea extinction using gas medicament: when the HFC-227ea fire-suppressant gas is applied to the system environments of total flood, it can be in conjunction with physics rapid with course of reaction chemistry, eliminate heat energy effectively, stop the generation of fire, the physical characteristic of HFC-227ea shows that its molecule vaporization stage can cool off flame temperature rapidly; And in chemical reaction process, discharge free radical, can finally stop the chain reaction of burning.

The performance characteristics of HFC-227ea clean gas automatic fire extinguishing system: 1. blow-off velocity is fast, efficient is high, initiative is strong; HFC-227ea clean gas automatic fire extinguishing system can stamp out a fire in 10 seconds usually fully; the design extinguishing concentration in the protected relatively district of HFC-227ea clean gas extinguishing medium is low; only be 7%; but the clean extinguishing medium liquid form storage of HFC-227ea also can purify rapidly and be clean fire-suppressant gas, and the initiative of fire extinguishing is strong.2. clean: the very suitable protection electrical equipment of HFC-227ea clean gas automatic fire extinguishing system, magnetizing mediums, archive files or costly treasure and equipment; and it is harmless to protected article; do not stay any residue after the fire extinguishing, do not interrupt the routine work in the protection zone fully.3. the clean fire-suppressant gas of safety: HFC-227ea is internationally recognized harmless extinguishing medium, and is nontoxic and can not cause respiratory problems.HFC-227ea clean gas automatic fire extinguishing system release pressure is little, nontoxic, is applicable to very much the protection zone that the staff resides.4. environmental protection: HFC-227ea is clean, and fire-suppressant gas is not that international environmental protection organization lists the gas of stopping using plan in, can not damage atmospheric ozone layer, and the phase that retains in atmosphere only is 31～42 years.5. economical: HFC-227ea clean gas automatic fire extinguishing system is because meet present environmental regulation, so need not change and overlapping investment in the future.In design, can also adopt the combination apportion design design of concentrating stocking system, the more economical fire protection that carries out effectively.Therefore HFC-227ea clean gas automatic fire extinguishing system volume is little, and gas cylinder quantity is few, can save the area between gas cylinder or does not need between gas cylinder.6. ripe: the HFC-227ea clean gas is the successful Application of the existing examples up to ten thousand in the whole world, the practice of having gone beyond what is acceptable or necessary 10 years test.Supporting design and engineering discipline are arranged in the world.

The theory of constitution of HFC-227ea clean gas automatic fire extinguishing system: HFC-227EA clean gas automatic fire extinguishing system is made up of gas pipeline network system and automatic control system two parts, and two separate co-operatings again of system are to finish fire-extinguishing function concurrently.

Though HFC-227ea extinction using gas medicament is a kind of clean gas extinguishing chemical, have above-mentioned many advantages, its fatal weakness is: because the diffusivity of gas extinguishing agent can't reach fire extinguishing effectively for open spaces fire and deep-seated fire.

2, foam that fire foam produces is that a kind of volume is little, the vesicle bubble group that the surface is surrounded by liquid, and its density is 0.001～0.5.Because its density is far smaller than general flammable, flammable liquid, therefore can float on the surface of liquid, form protective layer.Comburant and air are cut off, reach the purpose of fire smothering.It is mainly used in puts out generally flammable, inflammable fire; Foam also has certain viscosity simultaneously, can stick on the solid, so to putting out solid fire certain effect is arranged also.

Carbon dioxide extinguishing agent is to fill in fire extinguisher with liquid carbon dioxide, when opening extinguisher valve, liquid carbon dioxide just rises to the nozzle place along siphon pipe, flash to gas rapidly, volume enlarges about 500 times, absorbs a large amount of heats simultaneously, and the interior temperature of spray tube is sharply descended, when reducing to-78.5 ℃, a part of carbon dioxide just condenses into snowflake shape solid.When it is sprayed onto on the combustible, the comburant temperature is reduced, and oxygen content in secluding air and the reduction air, and fire is extinguished.Carbon-dioxide fire engine mainly is a smothering action, but to there being the material that glows then to be difficult to put out, particularly works as combustion zone air oxygen content greater than 12%, and its burning is difficult to extinguish; Secondly, carbon dioxide can not put out the fire of metal such as lithium, sodium, potassium, magnesium, aluminium, antimony, titanium, cadmium, platinum, plutonium and oxide thereof, can not be used to put out the fire as the oxygen containing chemical substance of nitrocotton, celluloid, gunpowder etc. itself; The 3rd, be air owing to what wrap up in the fire foam, under action of high temperature, the air in the foam is not the effect that plays fire extinguishing to high temperature combustion material, but plays combustion-supporting effect.

Summary of the invention

Purpose of design of the present utility model, the weak point of avoiding background technology to exist, design a kind of special can be applicable to low Buddhist point liquid fire extinguishing, that have dual fire extinguishing effect and with the fire extinguishing system of clean gas as blowing agent.

In order to realize above-mentioned purpose of design, the utility model adopts the fire extinguishing system of clean gas as blowing agent, is major technique feature of the present utility model.The purpose of doing like this is: the one, because the burning-point of low Buddhist point combustible is very low, the clean gas extinguishing chemical is subjected to the restriction of its environmental condition, easily diffusion, therefore it thoroughly can't be put out, particularly for the fuel gas of low Buddhist point, clean gas extinguishing chemical can't be realized the effect of chain rupture fire extinguishing at all; The 2nd, existing fire foam is to be the medium of foaming with the air, that is to say that what wrap up in the foam is to contain the oxygen air.When putting out a fire, when the temperature of comburant is high especially, is wrapped in the foam air comburant and air are cut off with it, can't reach the order of fire smothering, played combustion-supporting effect on the contrary, particularly for the material of low Buddhist point, its harmfulness is bigger; The mixer apparatus that the utility model adopts, on the foam solution service, press design proportion entrained gas extinguishing chemical, guarantee the saturated vapour pressure of system works pressure greater than gas extinguishing agent self, it is mobile to make that gas extinguishing agent and foam solution are in a liquid state in pipeline equally, flow to end at last, produce equipment by special special-purpose foam, produce the foam that is full of gas extinguishing agent, be covered in the flammable liquid surface and put out a fire.That is to say, the utility model is applied to the fire fire extinguishing with the extinguishment product of clean gas as blowing agent, has both had foam fire-fighting and has covered the function of suffocating, have the effect of the high-performance chain rupture fire extinguishing of extinction using gas again, thereby realized effective fire extinguishing low Buddhist point material.Its technical scheme: with the fire extinguishing system of clean gas as blowing agent, adopt pipeline to be communicated with between foam solution feedway and the gas foam mixer, the clean gas extinguishing chemical adopts pipeline to be communicated with the gas foam mixer, and gas foam mixer outlet is communicated with foam producer by pipeline.

The utility model is compared with background technology, produce the gas foam foam extinguishing agent with clean gas as the fire extinguishing system of blowing agent, has solved that people want to solve for a long time and the technical barrier that do not have technology, the problem of promptly low Buddhist point flammable liquid fire extinguishing difficulty.

Description of drawings

Fig. 1 is with the schematic diagram of clean gas as the fire extinguishing system of blowing agent.

The specific embodiment

Embodiment 1: with reference to accompanying drawing 1.Clean gas is as the fire extinguishing system of blowing agent, adopt pipeline 2 to be communicated with between foam solution feedway 1 and the gas foam mixer 3, clean gas extinguishing chemical 4 adopts pipeline 5 to be communicated with gas foam mixer 3, and 3 outlets of gas foam mixer are communicated with foam producer 7 by pipeline 6.Described gas foam mixer 3 is a prior art, as produce the extinguishing chemical of fire foam with the method for machinery or chemical reaction, so be not described herein at this.

What need understand is: though the foregoing description is to the invention detailed text description of contrasting; but these text descriptions; it is simple description to the invention mentality of designing; rather than to the restriction of the utility model mentality of designing; any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the present utility model.

Claims (1)

1, a kind of with the fire extinguishing system of clean gas as blowing agent, it is characterized in that: adopt pipeline to be communicated with between foam solution feedway and the gas foam mixer, the clean gas extinguishing chemical adopts pipeline to be communicated with the gas foam mixer, and gas foam mixer outlet is communicated with foam producer by pipeline.

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