CN1552487A - Extinguishing method and extinguisher - Google Patents
Extinguishing method and extinguisher Download PDFInfo
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- CN1552487A CN1552487A CNA03137932XA CN03137932A CN1552487A CN 1552487 A CN1552487 A CN 1552487A CN A03137932X A CNA03137932X A CN A03137932XA CN 03137932 A CN03137932 A CN 03137932A CN 1552487 A CN1552487 A CN 1552487A
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Abstract
A fire extinguishing method by use of gas-liquid mixture features that the N2-enriched air is mixed with the solution whose primary component is water to obtain the mixture whose specific weight is higher than that of air, and the mixture is used to cover on fire flame for extinguishing it. Its apparatus is composed of gas-liquid mixing and straightening unit, ultrasonic water particle generator, N2-enriched air generator, air compressor, water storage container and pipeline.
Description
Technical field
The present invention relates to fire-fighting domain, particularly relate to a kind of nitrogen-rich air-water particle group and nitrogen-rich air-foam group method for extinguishing fire and fire-extinguishing apparatus thereof of utilizing.
Background technology
Fire-fighting by water, is the employed main extinguishing method of existing portable fire-extinguishing apparatus.Because the good cooling results of water is supplied with easily, cheapness is nontoxic and free from environmental pollution, so be exactly the most frequently used extinguishing chemical since ancient times.Yet as the water of liquid, it always is subjected to the influence of gravity and sedimentation.Unless comburant is flooded, otherwise it is to mix mutually with ambient air as gas extinguishing agent, covers whole comburant to reach fire extinguishing.Therefore, when fire-fighting by water, the utensil that discharges water must be near combustible, and system discharges water and can't have the barrier of watering to exist between utensil and the combustible.
Yet, when fire occurs in big aspect, great depth, or the building of internal structure complexity in the time, the same with tunnel fire hazard, discharging water of carrying out from the outside is difficult to arrive the inside of building, enter interior of building and dense smoke and high temperature hinder the fire fighter, thereby can't effectively put out a fire.In addition, as the warehouse that has stored store of goods, or during outdoor deposit breaking out of fire such as the waste tire of bulk deposition and vehicle,, also there is situation about can't effectively put out a fire even if the tailrace prodigiosin is enough in burning things which may cause a fire disaster.
For above-mentioned fire that can't be approaching, or since the dead angle that discharges water how promptly to enable can to put out a fire by the using gases extinguishing chemical near the fire that also can't discharge water effectively.Because gas extinguishing agent can be full of the fire space, covers combustible fully, so it can put out the fire that water is difficult for putting out.But existing extinction using gas equipment nearly all utilizes container to store fire-suppressant gas, so it can only be arranged on the high place of surcharge as fixing fire-extinguishing apparatus.In addition, because be limited, can not supply with for a long time, so it can't be used for nonocclusive space by the amount of the fire-suppressant gas of supply for receptacles.
Therefore, application number is that 02115428.7 Chinese patent application has proposed such method: the nitrogen-rich air that utilizes the nitrogen enriching apparatus that is mounted with gas separation membrane to have certain oxygen concentration in the fire-extinguishing location production of fire, and with its a large amount of fire spaces of injecting.By such method the Atmospheric components in fire space are replaced into and put out a fire and can not produce dysgenic Atmospheric components, reach the purpose that to put out a fire and can protect the personnel in the fire space with this to people's existence.If this method practicability then can be from the outside to the tunnel, the floor of undergrond street and depth is put out a fire.
Yet, because the proportion of nitrogen-rich air is less than air, so must make it be full of whole fire space during fire extinguishing.Therefore it can't be applied to outdoor fire.In addition, fire betides the bottom in space mostly, for the fire in the very high big volume space in roof, just can be full of whole space owing to will inject a large amount of nitrogen-rich airs, therefore is difficult to fire extinguishing rapidly.
Carbon dioxide overweights air, can rest in the building that does not have the top and outdoor low-lying land; In addition, carbon dioxide packing can keep liquid at normal temperatures by pressurization, institute is so that storage and conveying, except as the fixing fire-extinguishing apparatus, also be used for the fire extinguishing of tunnel fire as portable fire-extinguishing apparatus, but since it when putting out general combustible required concentration be to people's the adventurous concentration of life about 3 times, so can not be used to have people's place.
Summary of the invention
The purpose of this invention is to provide a kind of like this use nitrogen-rich air-water particle group and nitrogen-rich air-foam group method for extinguishing fire and equipment thereof, it can not produce harmful effect to human and environment when stamping out a fire, and can be used in the space of not having the top, put out the fire that water is difficult for putting out.
The present invention adopts following technical scheme: will contain the nitrogen-rich air of certain density oxygen, and mix with water particle ratio as requested, and form nitrogen-rich air-water particle group, and incite somebody to action group's guiding burning things which may cause a fire disaster thus, and reach the purpose of fire extinguishing.
Specifically, fire-extinguishing apparatus promptly is transported to the scene of fire that to put out a fire with the carrying means, adjust its oxygen concentration at the produced on-site nitrogen-rich air of fire extinguishing operation and according to having or not of the kind of fire and personnel, mix with water according to the nitrogen-rich air of the required flow of big young pathbreaker in burning things which may cause a fire disaster or fire space and to form nitrogen-rich air-water particle group, and, cover burning things which may cause a fire disaster to reach the purpose of fire extinguishing with this with its lead constantly burning things which may cause a fire disaster or fire space.
It mainly is in order to increase the proportion of nitrogen-rich air that water particle is added nitrogen-rich air.As everyone knows, the density of air is about 1.29kg/m
3, the density of nitrogen is about 1.25kg/m
3The density of the nitrogen-rich air of this moment is about 1.26kg/m
3, than air light approximately 2%.Therefore need only the water that adds the unit of weight more than 2% to nitrogen-rich air, just can make its proportion be equal to or greater than air.But the water that adds must be scattered in the nitrogen-rich air equably with vaporific form, so that utilize gas molecule and interparticle viscosity to stop nitrogen-rich air to be deviate from from group.Nitrogen-rich air-the water of water particle group and the volume ratio of nitrogen-rich air should be between 1/15000 to 1/300, less than 1/15000 free settling not, then are difficult for forming the spray water particle greater than 1/300.
Oxygen concentration in the atmosphere is generally 21% (concentration by volume), even but oxygen concentration is reduced to 15%, the people is also on good terms, and 14% following respiration rate will increase, and have difficulty in breathing during 10% left and right sides, and 7% is in peril of one's life at short notice with next.That is,, then health is not had influence, have the oxygen more than 7% just can earn a bare living if oxygen more than 15% is arranged.On the other hand, reduce to 17% when following when oxygen concentration, match and candle just can't burn, and when reducing to 12% left and right sides, most objects all can't burn.Therefore, among the present invention, oxygen concentration is 7-17% in the employed nitrogen-rich air, preferred concentration is 8-17%, like this, the life security of the personnel around fire extinguishing the time just can not endanger and implements are not on every side caused big infringement obtains good fire extinguishing or inhibition effect of combustion simultaneously.
As the means of production of nitrogen-rich air, can adopt the rich nitrogen device of the gas separation membrane of airborne nitrogen and oxygen separation, or the rich nitrogen device of the suction type that alternately pressurizes (Pressure Swing Adsorption).For the facility that stores liquid nitrogen, also can use the supply source of liquid nitrogen as nitrogen.
For water particle is evenly mixed with nitrogen-rich air, the water particle generating means that can adopt air wetting to use.The water particle generating means can be selected from following kind, as ultrasound in nature, and high pressure nozzle type, dual-fluid type, centrifugal force type etc.Because the very little water particle of particle diameter can not damage implements, so should preferentially use nitrogen-rich air-water particle group in the less place of airflow influence.
Water in nitrogen-rich air in the aforementioned schemes-water particle group can add blowing agent, utilizes foam-making apparatus to produce foam, forms nitrogen-rich air-foam group that foam is wrapped in nitrogen-rich air.The foam of nitrogen-rich air-foam group is the deposit shape that is coupled to each other, and like nitrogen-enriched air-water particle group is like that uneasy moves with air-flow for it, so it is more suitable in being subjected to bigger place of airflow influence and liquid level fire.
The foam-making apparatus that the height that foam-making apparatus can use fire-fighting to use foams, frothing percentage can be located at about 1000 times.When adopting foam-making apparatus, must add interfacial agent as the blowing agent that produces foam in water, blowing agent is preferably protein foam concentrate, aqueous foam-forming solution or synthetic interfacial agent.
The present invention has following good effect:
Can so it has mobility, can deal with the fire of various different places from the required nitrogen-rich air of air production fire extinguishing of fire extinguishing operation field owing to have the fire extinguishing system of rich nitrogen device.
Because the proportion of the group of nitrogen-rich air-liquid is greater than air,, also be suitable for the fire extinguishing of the fire in the large space of open-top so it not only can be used for enclosure space.Has wider applicability than the simple nitrogen-rich air that uses.
It can suppress fire rapidly, and the personnel around can not endangering.
According to the needs of fire extinguishing, can make it to be fit to the fire extinguishing of the burning things which may cause a fire disaster of differing heights in the fire space by the mix proportion of recently easily adjusting gas-liquid group of adjustments of gas, the operation of therefore can putting out a fire effectively with liquid.
Because liquid is mixed in nitrogen-rich air, make nitrogen-rich air by not visible become visual, the operation when having made things convenient for fire extinguishing.
Because whole specific heat and gasification latent heat was improved after nitrogen-rich air added water, help to improve the fire extinguishing effect.
Compare with the fire extinguishing system based on water, the damage by water that it caused will greatly reduce.
Description of drawings
Fig. 1 is the embodiment schematic diagram of extinguishing method provided by the present invention.Wherein: 1 is the big volume warehouse on high roof, and 2 is gas and the mixing and fairing of liquid, and 3 is ultrasonic wave water particle generator, 4 is the nitrogen-rich air generating means, 5 is air compressor, and 6 is tank, and 7 is nitrogen-rich air-water particle group or nitrogen-rich air-foam group.
The specific embodiment
Below, will be specifically described form of implementation of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to this embodiment.
Fig. 1 has shown embodiments of the invention.Fire extinguishing system is mixed and fairing 2 ultrasonic wave water particle generator 3, nitrogen-rich air generating means 4, air compressor 5, compositions such as tank 6 and pipeline by gas and liquid.It can be carried to the scene of fire rapidly by vehicle or big payload helicopter.
When fire took place in the warehouse 1 of the big volume in illustrated high roof, the native system that is provided to fire brigade moved to the scene rapidly.According to the fire space whether the people is arranged, the scale of fire, the kind of combustible and the situation of building use nitrogen-rich air generating means 4 to produce the nitrogen-rich air of required oxygen concentration from air, use ultrasonic wave water particle generator 3 to produce water particle simultaneously.With the two by gas and liquid mix and fairing 2 mixes in certain proportion and forms proportion and import the fire space greater than the nitrogen-rich air-water particle group of air and with it.Because the proportion of nitrogen-rich air-water particle group so it will at first fall to the bottom in warehouse, and is full of the space greater than air from bottom to top.Therefore can make full use of the fire-suppressant gas that is injected, in the shorter time, realize fire extinguishing.
Claims (7)
1. the extinguishing method of a fire, it is characterized in that: utilize the enough nitrogen-rich airs of nitrogen-rich air process units production, the oxygen concentration by volume is 7-17% in the nitrogen-rich air, and utilize the water particle generating means that water is mixed with nitrogen-rich air, form nitrogen-rich air-water particle group, the water in the group and the volume ratio of gas are 1/15000 to 1/300, cover burning things which may cause a fire disaster with this group and put out a fire.
2. extinguishing method according to claim 1 is characterized in that: described oxygen concentration by volume is 8-17%.
3. extinguishing method according to claim 1 is characterized in that: add blowing agent in the described water, and described water particle generating means adopts foam-making apparatus.
4. extinguishing method according to claim 3 is characterized in that: described blowing agent is a kind of among protein foam concentrate, aqueous foam-forming solution or the synthetic interfacial agent.
5. extinguishing method according to claim 1 is characterized in that: described nitrogen-rich air process units is the rich nitrogen device of the rich nitrogen device of diffusion barrier or the suction type that alternately pressurizes.
6. extinguishing method according to claim 1 is characterized in that: the generating means of described water particle is the two-fluid spray nozzle mode, ultrasonic humidifier mode, high pressure nozzle mode, a kind of among the centrifugal force mode.
7. fire-extinguishing apparatus that is used for the described extinguishing method of claim 1, it is characterized in that: this equipment is mixed and fairing (2) by gas and liquid, ultrasonic wave water particle generator (3), nitrogen-rich air generating means (4), air compressor (5), tank (6) is formed, and each several part is connected by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03137932XA CN1552487A (en) | 2003-05-30 | 2003-05-30 | Extinguishing method and extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03137932XA CN1552487A (en) | 2003-05-30 | 2003-05-30 | Extinguishing method and extinguisher |
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| Publication Number | Publication Date |
|---|---|
| CN1552487A true CN1552487A (en) | 2004-12-08 |
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| CNA03137932XA Pending CN1552487A (en) | 2003-05-30 | 2003-05-30 | Extinguishing method and extinguisher |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015033A (en) * | 2007-09-24 | 2011-04-13 | Utc消防及保安公司 | Inert gas flooding fire suppression with water augmentation |
| CN102089040B (en) * | 2008-04-10 | 2012-11-28 | Utc消防及保安公司 | Fire suppression system with improved two-phase flow distribution |
-
2003
- 2003-05-30 CN CNA03137932XA patent/CN1552487A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015033A (en) * | 2007-09-24 | 2011-04-13 | Utc消防及保安公司 | Inert gas flooding fire suppression with water augmentation |
| CN102089040B (en) * | 2008-04-10 | 2012-11-28 | Utc消防及保安公司 | Fire suppression system with improved two-phase flow distribution |
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