CN108525161A - Foam generation module and foam fire-fighting equipment - Google Patents
Foam generation module and foam fire-fighting equipment Download PDFInfo
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- CN108525161A CN108525161A CN201710645486.8A CN201710645486A CN108525161A CN 108525161 A CN108525161 A CN 108525161A CN 201710645486 A CN201710645486 A CN 201710645486A CN 108525161 A CN108525161 A CN 108525161A
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- foam
- entrance
- mixing liquid
- liquefied medium
- generation module
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
Abstract
The invention discloses a kind of foam generation module and foam fire-fighting equipments, foam generation module includes foam producer, foam producer is provided with the foam with foam mixing liquid entrance, liquefied medium entrance and foam outlet and generates chamber, foam mixing liquid entrance connects to foam and generates the mixer that chamber conveys foam mixing liquid, liquefied medium entrance connects the liquefied medium storage device that chamber transportation of liquefied medium is generated to foam, liquefied medium generates intracavitary mixing gasifying in foam with foam mixing liquid and foams, with the foam put out a fire from foam outlet output；Wherein, mixer is provided with the mixing chamber with stoste entrance and water inlet, stoste entrance connects the foam dope storage device that foam dope is inputted to mixing chamber, and the foam dope inputted from stoste entrance and the water inputted from water inlet mix in mixing chamber and generates foam mixing liquid.Foam generation module and fire-extinguishing apparatus provided by the invention can generate big flow high power foam, and small, save space.
Description
Technical field
The present invention relates to fire control technologies, and in particular, to a kind of foam generation module and foam fire-fighting equipment.
Background technology
Existing compressed air foam fire extinguishing is carried out by the way of mainly being mixed generation foam with foam mixing liquid using gas
Fire extinguishing.Specific compressed air foam fire-fighting mode mainly has the fire extinguishing of gerotor type compressed air foam and air storing type foam fire-fighting two
Kind mode.
Wherein, the mode of gerotor type compressed air foam fire extinguishing generally use compressor or compressed gas cylinder is supplied
Gas, and compressor and compressed gas cylinder air demand are limited, cannot be satisfied the requirement of big-flow high-pressure power gas supply, and if needing to realize
Big-flow high-pressure power supplies, then setting multiple compressors or compressed gas cylinder is needed (such as to disappear with the foam of a flow 150L/S
For anti-vehicle, the supply flow rate of gas is 1050L/s, and gas supply is needed by more large-scale air compressor machine supply), occupied space
Greatly, the space for often not having arrangement in oil depot tank field, device area, is unfavorable for site layout project.And it is generated using aspirated mode
Foam have the following defects：Foam bubbles are not of uniform size, foam is uneven, performance is unstable, foam is easily broken, burn resistance
Difference, the defects of fire-fighting efficiency is not high.
Another air storing type foam fire-fighting usually stores compressed gas in foamite container, when big flow is sprayed, pressure
Contracting gas will be consumed largely, and injection pressure is also greatly reduced, and at this time to ensure the high-pressure injection of extinguishing chemical, then needs in time to fire extinguishing
Compressed gas is supplemented in agent container, and under big flow spray regime, only lean on air compressor machine and compressed gas cylinder that can not protect at all
The enough supplements for demonstrate,proving compressed gas, lead to not effectively realize high-pressure injection requirement, influence extinguishing effect.When progress fire disaster
When fire extinguishing, then need to produce big flow high-foaming fire-extinquishing, foams mix flow quantity improves at this time, the air demand of compressed gas
It need to increase therewith, and existing compressed air foam producing method cannot achieve the supply of big-flow high-pressure compressed gas, bubble
Foam mixing flow quantity only 20~30L/s, is mainly used in the fire attack of general scale at present, as building fire, ground are small
Range trickling fire etc., can not be in the application in large-scale storage tank fire or large-scale ground spill fire.
For this purpose, a kind of new foam-generating device or equipment need to be designed, compressed air foam is used to put out a fire and store up to overcome
Defect present in the fire-extinguishing apparatus of gas formula foam fire-fighting.
Invention content
A kind of foam generation module of present invention offer and foam fire-fighting equipment, to solve to use compressed gas in the prior art
Defect existing for the fire-extinguishing apparatus of foam fire-fighting and air storing type foam fire-fighting.
To achieve the goals above, one aspect of the present invention provides a kind of foam generation module, the foam generation module packet
Foam producer is included, the foam producer is provided with foam mixing liquid entrance, liquefied medium entrance and foam outlet
Foam generates chamber, and the foam mixing liquid entrance is connected with for generating the mixing that chamber conveys foam mixing liquid to the foam
Device, the liquefied medium entrance are connected with the liquefied medium storage device for generating chamber transportation of liquefied medium to the foam,
The liquefied medium and the foam mixing liquid can generate intracavitary mixing gasifying in the foam and foam, with from the foam
Foam of the outlet output for fire extinguishing；
Wherein, the mixer is provided with the mixing chamber with stoste entrance and water inlet, the stoste entrance connection
It is useful for inputting the foam dope storage device of foam dope, the bubble inputted from the stoste entrance to the mixing chamber
Foam stoste and the water inputted from the water inlet mix in the mixing chamber generates the foam mixing liquid.
Preferably, between the foam producer and the mixer, the foam producer is deposited with the liquefied medium
It is provided with flowmeter between storage device, between the foam dope storage device and the mixer and/or at the water inlet；
Between the foam producer and the mixer, between the foam producer and the liquefied medium storage device, it is described
It is provided with control valve between foam dope storage device and the mixer and/or at the water inlet.
Preferably, the foam generation module further includes control unit, and described control unit is controlled according to the flowmeter
The control valve is to adjust flow.
Preferably, the foam producer is tubular structure, and one end of the tubular structure is provided at least one described
The other end of foam mixing liquid entrance, the tubular structure is provided at least one foam outlet, and the liquefied medium enters
Mouth and the angled setting of the foam mixing liquid entrance.
Preferably, there are one the foam mixing liquid entrance settings, the liquefied medium entrance surrounds the foams mix
Liquid entrance is provided with one or more, the direction of each liquefied medium entrance and the direction of the foam mixing liquid entrance it
Between angle be 0 °~90 °.
Preferably, there are one the foam mixing liquid entrance settings, the liquefied medium entrance surrounds the foams mix
Liquid entrance is provided with multiple, and the direction of multiple liquefied medium entrances deviates from radial direction successively in the horizontal so that institute
The liquid stream for stating the entrance of liquefied medium entrance being capable of rotational flow.
Preferably, the liquefied medium entrance, which is provided with, stretches to the input pipe that the foam generates intracavitary.
Preferably, the foam mixing liquid entrance, the liquefied medium entrance and the foam outlet are each provided with one；
Wherein, the relationship between the diameter D1 of the tubular structure and the diameter D2 of the foam mixing liquid entrance is：D1/D2=1.1
~4；Relationship between the diameter D2 of the foam mixing liquid entrance and the diameter D3 of the liquefied medium entrance is：D2/D3=4
~10；Relationship between the diameter D1 of the tubular structure and the diameter D4 of the foam outlet is：D1/D4=0.8~2.
Preferably, between the diameter D6 of the water inlet of the stoste mixer and the diameter D5 of the stoste entrance
Relationship is：D6/D5=8~14；Relationship between the diameter D6 of the water inlet and the diameter D2 of the foam mixing liquid entrance
For：D6/D2=1.0~1.4.
Preferably, the foam generates intracavitary and is provided at least one flow spoiler for disturbing liquid stream.
Preferably, the flow spoiler is formed as pyramidal structure, hemispherical dome structure or platform structure；
The deck roof of the taper top of the pyramidal structure, the dome of the hemispherical dome structure or the platform structure faces
To the foam mixing liquid entrance.
Preferably, the cross section of the flow spoiler is circular configuration, diameter D7 and the foams mix of the flow spoiler
Relationship between the diameter D2 of liquid entrance is：D7/D2=1.0~4；And/or
The top of flow spoiler distance L between outflux of the liquefied medium in the liquefied medium inlet is 0
~100mm.
Preferably, the foam generates intracavitary and is provided at least one spaced porous structure；It is each described porous
Multiple holes are provided in structure；The hole of the porous structure is towards the foam mixing liquid entrance, and the porous structure is opposite
The top of the flow spoiler is far from the foam mixing liquid entrance.
Another aspect of the present invention, also provides a kind of foam fire-fighting equipment, and the foam fire-fighting equipment is provided with institute as above
The foam generation module stated.
Foam generation module and foam fire-fighting equipment provided by the invention pass through foam mixing liquid and liquefied medium mixing energy
Big flow foam is enough obtained, and due to eliminating bulky compressor or compressed gas cylinder and bulky, structure
Complicated liquified gas vaporization device etc., foam generation module and fire extinguisher provided by the invention are small, save space.
Description of the drawings
Fig. 1 is the structural schematic diagram according to foam generation module in an embodiment of the invention；
Fig. 2 is the structural schematic diagram for the foam producer that mixer is connected in foam generation module；
Fig. 3 is the structural schematic diagram of the flow spoiler of pyramidal structure；
Fig. 4 is the structural schematic diagram of the flow spoiler of hemispherical dome structure；
Fig. 5 is the structural schematic diagram of the flow spoiler of platform structure.
Reference sign
1- foam producers；11- foam mixing liquid entrances；12- liquefied medium entrances；13- foam outlets；14- flow spoilers；
141- mounting portions；15- porous structures；16- input pipes；2- mixers；21- stoste entrances；22- water inlets；3- liquefied mediums are deposited
Storage device；4- stoste storage devices；5- flowmeters；6- control units.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of foam generation module, as shown in Figure 1, the foam generation module includes foam producer 1, bubble
Foam generator 1 is provided with the foam with foam mixing liquid entrance 11, liquefied medium entrance 12 and foam outlet 13 and generates chamber, institute
Foam mixing liquid entrance 11 is stated to be connected with for generating the mixer 2 that chamber conveys foam mixing liquid, liquefied medium to the foam
Entrance 12 is connected with the liquefied medium storage device 3 for generating chamber transportation of liquefied medium to the foam, liquefied medium and bubble
Foam mixed liquor can generate intracavitary mixing gasifying in the foam and foam, with the bubble from the output of foam outlet 13 for fire extinguishing
Foam；Wherein, the mixer 2 is provided with the mixing chamber with stoste entrance 21 and water inlet 22, and the stoste entrance 21 connects
It is connected to the foam dope storage device 4 for inputting foam dope to the mixing chamber, described in the input of stoste entrance 21
Foam dope and the water inputted from water inlet 22 mix in the mixing chamber generates the foam mixing liquid.
Foam dope is mixed acquisition foam by mixer 2 with water and mixed by foam generation module provided by the invention first
Close liquid simultaneously be delivered to foam producer 1, the liquefied medium that then liquefied medium storage device 3 is inputted to foam generating chamber with mix
The foam mixing liquid mixing that device 2 inputs, during liquefied medium is mixed with foam mixing liquid, liquefied medium and foams mix
The rapid gasification of liquid heat exchange, and foam simultaneously, the mode of the generation foam can obtain big flow high power foam, and the bubble obtained
Foam is uniform, and stability is good.
Foam generation module provided by the invention avoids the technology road by air-compressor set or compressed gas cylinder gas supply
Line also avoids liquefied medium and carries out the technology path of exchanging air metaplasia production compressed gas by large-scale gasification installation, but adopts
Direct with the foam mixing liquid mixed heat transfer and simultaneously mode of foam with liquefied medium.Therefore, middle compared with prior art to use
Compressed air generates the mode of foam, and air compressor machine, compressed gas cylinder, liquified gas vaporization device etc. need to be equipped with and cause by avoiding
The big problem of occupied space.Using the fire-extinguishing apparatus of foam fire-fighting equipment provided by the invention, arrangement space can be saved, profit
In site layout project, consequently facilitating the development of fire-fighting work.The foam fire-fighting equipment may be provided at foam truck, on high-jetting vehicle or
On person's others fire-extinguishing apparatus.
In the present invention, liquefied medium generates after being mixed with foam mixing liquid used by the foam generation module foam
It is for putting out a fire, therefore, the type of gas caused by liquefied medium is limited to help to put out a fire, and inhibition can be played to fire
With the gas of smothering action.Preferably, the liquefied medium can be liquid nitrogen, liquid CO 2, liquefied gas, liquefaction
At least one of halogenated hydrocarbon gas.It is highly preferred that the liquefied medium is liquid nitrogen.Meanwhile the present invention is using liquefaction such as liquid nitrogen
Medium participates in frostproof froth n, the inert gases such as nitrogen can be released after lather collapse, inert gas is on combustible substance surface
It can play the role of inhibiting burning, help speed up putting out for fire.
In a preferred embodiment of the invention, the volume of gas and the liquefied medium caused by the liquefied medium
Ratio be not less than 100, preferably 200~1500, more preferably 500~1000.
Due to liquefied medium such as liquid nitrogen can generate rapidly gas and generation gas can advantageously with foams mix
Liquid generates bubble, and the expansion ratio of liquefied medium is usually larger, is not less than 100, many even as high as 500 or more, such as liquid nitrogen
Expansion ratio to be usually the liquid nitrogen of 710 namely 1 volume can usually provide the nitrogen of 710 volumes, and the pressure of conventional compressed air
Than being no more than 20, the volume of the gas thus generated by liquefied medium greatly increases compared with the volume of liquefied medium itself for contracting,
The small volume of used liquefied medium in the case where obtaining same amount of gas, thus can directly by liquefied medium such as
Liquid nitrogen generates foam to be sent in foam producer to mix with foam mixing liquid, and liquefied medium is gasified without elder generation, then will
The obtained gas that gasifies is mixed with foam mixing liquid, is thus greatly reduced the volume of foam-generating device, is improved device
Flexibility and application places are widened.
By taking 10 ten thousand stere storage tank gross area fire of putting out a fire to save life and property as an example, come comparative analysis suction type foam (air suction type foam),
By the compressed air foam of liquid nitrogen gas supply and the configuring condition of the compressed air foam by compressor set gas supply.
(1) for suction type froth fire extinguishing system, based on external fire extinguishing case and《Japanese fire service law》、API、
The recommendation of the internal authorities such as LASTFIRE standard criterion and storage tank fire research tissue, for 10 ten thousand stere storage tank gross areas
Fire is puted out a fire to save life and property, and the supply intensity of foam mixing liquid at least needs 9L/min.m2, foams mix flow quantity at least needs 45216L/
Min, attack time at least needs 60min, and in terms of minimum value, the consumption of foam mixing liquid is 2712m3。
(2) for compressor gas supplied compressed air foam fire extinguishing system, it is considered that compressed air foam fire extinguishing system
Required foam supply capacity is the 1/4 of suction type froth fire extinguishing system, but going out due to 10 ten thousand stere storage tank gross area fire
Fiery area is larger, the large scale food tray fire fighting test data of inventor according to the present invention, and foam supply capacity is appropriate
For 5.4L/min.m2, foams mix flow quantity is 27130L/min.It is target with coefficient of foaming 7, air demand should be at least
190m3/ min, in addition loss amount, air demand is not less than 200m3/min.According to current large air compressor unit gas supply capacity (20-
28m3/ min), then it needs to configure 7-10 platform large size air compressor machine parallel connections and is supplied, the floor space about 5-6m of every air compressor machine2,
Then total floor space of air-compressor set is 35-70m2.Attack time is 60min, and the consumption of foam mixing liquid is 1627m3.Its
Described in large scale food tray fire fighting test refer to lighting diesel oil in the oil sump of diameter 21m, formed gross area fire, then
Using fixed froth installation into food tray spray foam, carry out fire extinguishing test.
(3) for the compressed air foam fire extinguishing system of liquid nitrogen gas supply, foam supply capacity is also 5.4L/min.m2, bubble
Foam mixing flow quantity is 27130L/min.It is target with coefficient of foaming 7, air demand should be at least 190m3/ min, in addition loss
Amount, air demand are not less than 200m3/min.Air demand is 12000m in 60min3, volume is 710 times after liquid nitrogen gasification, so required
Amount of liquid nitrogen is 17m3.Practical attack time is 60min, and the consumption of foam mixing liquid is 1627m3.The volume of one liquid nitrogen tank car
Usually 25m3, floor space is approximately 10 ㎡.After the liquid nitrogen tank car is fully loaded with liquid nitrogen, the sustainable supply time is 88min.Specific comparison
Such as the following table 1.
Table 1
It can be seen that the field that can be greatly reduced using liquid nitrogen plenum system of the present invention needed for air feed equipment from above-mentioned comparison
Ground area reduces gas supply difficulty so that large area fire extinguishing is possibly realized.
In mixed process, the flow proportional of liquefied medium and foam mixing liquid can be obtained by calculation.The present invention's
Inventor has found that the flow of liquefied medium and foam mixing liquid can obtain the compressed gas of better quality when meeting following relationships
Foam：L=mV/nf.Wherein, L is the volume flow of liquefied medium, and m is the coefficient of foaming of setting, and value is generally excellent in 5-200
Select 5-20 more preferably within the scope of 6-8, V is the volume flow of foaming substance, the gas volume and institute that n can generate for gas source
The ratio of the volume of gas source is stated, f is line loss, and value is within the scope of 1-1.4.The wherein volume flow V roots of foaming substance
According to fire area by《Froth fire extinguishing system design specification》(GB50151-2010) it determines.The better quality of compressed air foam is
Refer to that foam duration is longer, more difficult rupture, to which extinguishing effect is more preferable.
Preferably, the flow proportional of foam mixing liquid entrance 11 and liquefied medium entrance 12 is：80~160：1, more preferably
It is 90~110：1.
By taking liquid nitrogen as an example, become 710 parts of nitrogen, i.e. 710 times of volume expansion after a liquid nitrogen gasification.According to experiment test knot
Fruit, if realizing good compressed air foam, the volume flow proportion of foam mixing liquid and liquid nitrogen is 90~110:In 1 range.
Preferably, liquid nitrogen is mixed with 1MPa or more, the preferably pressure of 1-2MPa with foam mixing liquid；Foam mixing liquid with 0.8MPa with
On, the preferably pressure of 0.8-1.5MPa is mixed with liquid nitrogen.
Since foam mixing liquid is main room temperature fluid, after being mixed with liquid nitrogen, foam mixing liquid can be changed fully with liquid nitrogen
Heat, liquid nitrogen Quick-gasifying in foam mixing liquid fluid, and immediately engage in foaming.After liquid nitrogen gasification, foam mixing liquid is because of flow
Very big, fluid temperature reduces seldom, completely negligible, does not influence foam quality.Even if liquid nitrogen and foam mixing liquid first contacts
When, foam mixing liquid may will produce a small amount of ice quarrel, but in subsequent flowing, and ice quarrel can melt quickly, not influence to foam completely.
The flow proportional of foam mixing liquid entrance 11 and liquefied medium entrance 12 in order to control, foam producer 1 with mix
Between device 2, between foam producer 1 and liquefied medium storage device 3, between foam dope storage device 4 and mixer 2 and/
Or flowmeter 5 is provided at water inlet 22；And between foam producer 1 and mixer 2, foam producer 1 and liquefied medium
It is provided with control valve between storage device 3, between foam dope storage device 4 and mixer 2 and/or at water inlet 22, according to
The real-time monitoring of each flowmeter 5 controls each control valve to control the flow of each inlet.
Between foam producer 1 and liquefied medium storage device 3 and/or foam dope storage device 4 is mixed with described
Delivery pump can be also set between device 2, the foam dope in foam dope storage device 4 is delivered to mixer by delivery pump
2, and liquefied medium storage device 3 is delivered in foam producer 1, and can be adjusted by adjusting the rotating speed of delivery pump
Amount of restriction.In addition, entering in the foam mixing liquid entrance 11, the liquefied medium entrance 12, the stoste entrance 21, the water
It is provided with pressure gauge at mouth 22 and/or the foam outlet 13, the pressure for detecting each entrance.
The foam generation module further includes control unit 6, and described control unit 6 can be with each flowmeter, each pressure gauge, each
Control valve is connected with delivery pump, and Real-time Monitoring Data is transmitted to control unit 6,6 basis of control unit by flowmeter and pressure gauge
Monitoring data control each control valve and delivery pump to control the volume and flow of each fluid, ensure each fluid in proportions mixing, this
Sample can obtain preferable foaming effect, so that the foam obtained is uniform, stability is good.
In a preferred embodiment of the invention, liquefied medium storage device 3 is the liquid nitrogen container for being stored with liquid nitrogen, and foam is former
Liquid storage device 4 is the original fluid container for being stored with foam dope, structural schematic diagram such as Fig. 2 institutes of foam producer 1 and mixer 2
Show.
Such as Fig. 2, foam producer 1 is tubular structure, and one end of the tubular structure is provided at least one foam and mixes
Liquid entrance 11 is closed, the other end of tubular structure is provided at least one foam outlet 13, liquefied medium entrance 12 and foams mix
The angled setting of liquid entrance 11 so that two kinds of liquid also have certain cross flow one, make while inputting foam generation chamber
It can generate turbulent flow and the mixed effect that has had.
Preferably, there are one being arranged in foam mixing liquid entrance 11, liquefied medium entrance 12 surrounds the foam mixing liquid
Entrance 11 is provided with one or more, the side in the direction and the foam mixing liquid entrance 11 of each liquefied medium entrance 12
Angle between is 0 °~90 °, more preferably 30 °~60 °.In embodiment as shown in Figure 2, liquefied medium entrance 12 is arranged
There are one；In other embodiment, liquefied medium entrance 12 can be provided with multiple, liquefied medium around foam mixing liquid entrance 11
Storage device 3 can be connect with the liquefied medium entrance 12 respectively by multiple pipelines.
It is each provided with one feelings in the foam mixing liquid entrance 11, the liquefied medium entrance 12 and foam outlet 13
Under condition；Relationship between the diameter D1 of the tubular structure and the diameter D2 of the foam mixing liquid entrance 11 is：D1/D2=
1.1~4, preferably D1/D2=1.4~2.0；The diameter D2 of the foam mixing liquid entrance 11 and the liquefied medium entrance 12
Relationship between diameter D3 is：D2/D3=4~10；The diameter D1 of the tubular structure and diameter D4 of the foam outlet 13
Between relationship be：D1/D4=0.8~2, preferably D1/D4=0.8~1.2.Diameter by controlling each mouth meets above-mentioned pass
System, is conducive to the flow proportional for controlling each entrance, so that foaming is more abundant, to the foam quality higher obtained.
Additionally, it is preferred that between the diameter D6 of water inlet 22 and the diameter D5 of stoste entrance 21 of setting stoste mixer 2
Relationship is：D6/D5=8~14；Relationship between the diameter D6 of water inlet 22 and the diameter D2 of foam mixing liquid entrance 11 is：
D6/D2=1.0~1.4.
It will be appreciated by persons skilled in the art that foam mixing liquid entrance 11, liquefied medium entrance 12 and foam outlet
13 are not limited to be arranged as described above, can be to foam mixing liquid entrance 11, liquefied medium to reach better mixed effect
Various changes or deformation are made in the setting of entrance 12 and foam outlet 13.
For example, in other embodiment, foam mixing liquid entrance 11 can be arranged one, and liquefied medium entrance 12 surrounds
The foam mixing liquid entrance 11 is provided with multiple, and the direction of multiple liquefied medium entrances 12 deviates from diameter successively in the horizontal
To direction so that the liquid stream that liquefied medium entrance 12 enters being capable of rotational flow.Wherein, the tubular structure of foam producer 1 from
One end to the direction of the other end is longitudinal, is the transverse direction with longitudinally perpendicular direction.
In addition, foam outlet 13 may also set up multiple, for being separately connected injection line, generated to pass through foam
Device 1 is sprayed to multiple directions.
Preferably to control the flow direction of the liquefied medium entered from liquefied medium entrance 12, the liquefied medium entrance 12 can
It is arranged and stretches to the input pipe 16 (as shown in Figure 2) that foam generates intracavitary.
In addition, the foam generation intracavitary in foam producer 1 is provided at least one flow spoiler 14 for disturbing liquid stream.
Wherein, the flow spoiler 14 is formed as pyramidal structure (such as Fig. 3), hemispherical dome structure (such as Fig. 4) or platform knot
The structure of structure (such as Fig. 5) or other irregular shapes, the taper top of the pyramidal structure, the dome of the hemispherical dome structure or
The deck roof of platform structure described in person is facing towards the foam mixing liquid entrance 11.Preferably, the cross section of the flow spoiler 14
For circular configuration, the relationship between the diameter D7 of the flow spoiler 14 and the diameter D2 of the foam mixing liquid entrance 11 is：D7/D2
=1~4, preferably D7/D2=1.0~1.6.Between the diameter D7 of the flow spoiler 14 and the diameter D2 of foam mixing liquid entrance 11
Ratio is a preferred range, and if D7 and D2 are out of proportion to cause that frostproof froth n is insufficient, resistance becomes larger and flow
The bad phenomenons such as reduction.For example, if the diameter D7 ratios of flow spoiler become smaller, foam insufficient, and if the ratio of D7 becomes larger,
It is big that it will cause resistances, flow-reduction.In short, the degree that the proportionate relationship of D7 and D2 deviates aforementioned proportion relationship is bigger, to hair
The influence degree of bubble is bigger.
Preferably, the top of the flow spoiler 14 and liquefied medium are between the outflux at the liquefied medium entrance 12
Distance L be 0~100mm.Under the preferred embodiment, mixed material can form turbulent flow, to keep gas-liquid mixed more abundant, obtain
Obtain the higher foam of quality.And if the top of flow spoiler 14 is far apart from liquefied medium entrance 12, it can lead to not to be formed
Turbulent flow, gas-liquid mixed are insufficient.
If flow spoiler 14 is pyramidal structure in Fig. 2, the peace that intracavitary is generated for being fixed on foam can be set on flow spoiler 14
Dress portion 141 (such as Fig. 3).The flow spoiler 14 is installed as taper top towards foam mixing liquid entrance 11, is mixed with the bubble of liquefied medium
The liquid stream of foam mixed liquor rushes at flow spoiler 14, can smash liquid stream so that flow disturbance, to which liquefied medium and foam mixing liquid fill
Divide mixing, to obtain uniform in foaming, foam of good performance.
Certainly, 14 set-up mode of flow spoiler is also not necessarily limited to, as described above, for example, multiple flow spoilers can be arranged, be distributed in bubble
Foam generates the different location of intracavitary, and any type of flow spoiler that can play the role of flow-disturbing to liquid stream.
The foam of foam producer 1 generates intracavitary and is additionally provided with the porous knots such as at least one spaced orifice plate or silk screen
Structure 15 is each provided with multiple holes on the porous structure 15；The hole of the porous structure 15 enters towards the foam mixing liquid
Mouthfuls 11, and the top of the flow spoiler 14 relatively of the porous structure 15 is far from the foam mixing liquid entrance 11.By flow spoiler
14 liquid streams smashed, rush at porous structure 15 around flow spoiler 14, can further be carried out to liquid stream by porous structure 15
Disturbance, makes it further mix.
In addition, foam outlet 13 can connection length be more than 40m injection line, liquefied medium and foam mixing liquid are in foam
In generator 1 after mixing, make its by length be more than 40m pipeline to jet port, when being flowed in this pipeline, liquefy
Medium also fully mixes progress with foam mixing liquid repeatedly, before ejection, will form stable foam of good performance.
Foam mixing liquid and liquefied medium is enabled to be sufficiently mixed using foam producer 1 described above, so as to
Obtain the foam that foam is uniform, has good stability.
According to another aspect of the present invention, a kind of foam fire-fighting equipment is also provided, which is provided with as above
The foam generation module.
The foam fire-fighting equipment can be that fire-fighting equipments, the foam generation modules such as high-jetting vehicle or foam truck are set
It sets in foam fire-fighting equipment.In application process, the foam fire-fighting mould water inlet in the block and extraneous (for example) fire water
Supply system connects.Foam mixing liquid mixes on high-jetting vehicle or foam truck with liquefied medium and generates foam from injection line
It sprays.
It is the specific reality that foam generation module provided by the invention is arranged in miniature CAFS (froth fire extinguishing system) below
Apply mode.
Embodiment one
Foam generation module in CAFS in the embodiment, the foam outlet and foam mixing liquid of foam producer 1 enter
Mouth is located at the both ends of tubular structure.Relationship between the diameter D2 of foam mixing liquid entrance and the diameter D3 of liquid nitrogen entrance
For：D2/D3=8；Relationship between the diameter D1 of tubular structure and the diameter D2 of foam mixing liquid entrance is：D1/D2=1.4；
Relationship between the diameter D1 of tubular structure and the diameter D4 of foam outlet is：D1/D4=1.2；The direction of liquid nitrogen entrance and bubble
Angle between the direction of foam entry to mixed solution is 30 °.Foam generates intracavitary and is provided with flow spoiler, and the flow spoiler is formed as figure
Conical structure shown in 3, the taper top of the conical structure is towards foam mixing liquid entrance, the cross section of the flow spoiler
For circular configuration, the relationship between the diameter D7 of the flow spoiler and the diameter D2 of the foam mixing liquid entrance is：D7/D2=
1.2, the distance L between the outflux of inlet is 10mm with liquid nitrogen on the top of flow spoiler.The water inlet of stoste mixer
Relationship between diameter D6 and the diameter D5 of stoste entrance is：D6/D5=10；The diameter D6 and foam mixing liquid of the water inlet
Relationship between the diameter D2 of entrance is：D6/D2=1.4.The foam producer foaming effect is good, and it is steady to generate big flow performance
Fixed foam.
Since foam generation module provided by the invention can spray big flow foam, the injection pipe of fire-extinguishing apparatus
The diameter on road can increase to DN150 from the common caliber DN100 of foam fire-fighting, improve injection flow, 150L/s can be improved.
In this embodiment, fire of the miniature CAFS for the keypoint part for zonule of putting out a fire to save life and property, such as high temperature oil pump,
Emphasis valve etc..Wherein, the water inlet 22 of foam generation module connects the Stable High-Pressure Fire Water System in Wuhan Petrochemical Plant water supply at scene, liquefied medium
Using liquid nitrogen.
The design parameter of the CAFS is as follows in the present embodiment：
Single fire hydrant (DN65) water supply capacity：30L/S
Feed flow of the foam mixing liquid of mixer 2 to foam producer 1：3600L/min；
Feed flow of the liquid nitrogen to foam producer 1：33L/min；
Delivery pump (low temperature immersed pump) flow of liquid nitrogen：40L/min (power 15kw, lift 180m)；
Liquid nitrogen a maximum demand (40min)：1320L；
Liquefied medium storage device 3 (liquid nitrogen container)：45L (transfer tanks)；
Foam dope storage device 4 (original fluid container)：2m3(3% type foam dope)；
Feed flow of the foam dope to mixer 2：108L/min；
Foam dope consumption peak (40min)：4.5m3；
CAFS in the embodiment can realize effective fire extinguishing, attack time 20min, the practical coefficient of foaming measured
7.2。
Embodiment two
CAFS in the embodiment and the CAFS in above-described embodiment one are essentially identical, unlike, in the embodiment
Relationship between the diameter D2 of the foam mixing liquid entrance of foam producer and the diameter D3 of liquid nitrogen entrance is：D2/D3=10；Cylinder
Relationship between the diameter D1 of shape structure and the diameter D2 of foam mixing liquid entrance is：D1/D2=1.7.It is carried out using the CAFS
The test result of fire extinguishing is shown：Attack time 22min, practical coefficient of foaming 7, foaming properties are stablized.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited thereto.At this
In the range of the technology design of invention, a variety of simple variants, including each particular technique can be carried out to technical scheme of the present invention
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No longer separately illustrate.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection domain.
Claims (14)
1. a kind of foam generation module, which is characterized in that the foam generation module includes foam producer (1), the foam
Generator (1) is provided with the production of the foam with foam mixing liquid entrance (11), liquefied medium entrance (12) and foam outlet (13)
Raw chamber, the foam mixing liquid entrance (11) are connected with for generating the mixer that chamber conveys foam mixing liquid to the foam
(2), the liquefied medium entrance (12) is connected with the liquefied medium storage for generating chamber transportation of liquefied medium to the foam
Device (3), the liquefied medium and the foam mixing liquid can generate intracavitary mixing gasifying in the foam and foam, with from
Foam of foam outlet (13) output for fire extinguishing；
Wherein, the mixer (2) is provided with the mixing chamber with stoste entrance (21) and water inlet (22), and the stoste enters
Mouth (21) is connected with the foam dope storage device (4) for inputting foam dope to the mixing chamber, enters from the stoste
Described foam dope of mouth (21) input and the water inputted from the water inlet (22) mix in the mixing chamber and generate institute
State foam mixing liquid.
2. foam generation module according to claim 1, which is characterized in that the foam producer (1) mixes with described
Between device (2), between the foam producer (1) and the liquefied medium storage device (3), the foam dope storage device
(4) flowmeter (5) is provided between the mixer (2) and/or at the water inlet (22)；The foam producer (1)
Between the mixer (2), between the foam producer (1) and the liquefied medium storage device (3), the foam it is former
It is provided with control valve between liquid storage device (4) and the mixer (2) and/or at the water inlet (22).
3. foam generation module according to claim 2, which is characterized in that the foam generation module further includes that control is single
First (6), described control unit (6) control the control valve to adjust flow according to the flowmeter (5).
4. foam generation module according to any one of claims 1 to 3, which is characterized in that the foam producer
(1) it is tubular structure, one end of the tubular structure is provided at least one foam mixing liquid entrance (11), the tubular
The other end of structure is provided at least one foam outlet (13), the liquefied medium entrance (12) and the foams mix
The angled setting of liquid entrance (11).
5. foam generation module according to claim 4, which is characterized in that the foam mixing liquid entrance (11) is provided with
One, the liquefied medium entrance (12) is provided with one or more around the foam mixing liquid entrance (11), each described
Angle between the direction of liquefied medium entrance (12) and the direction of the foam mixing liquid entrance (11) is 0 °~90 °.
6. foam generation module according to claim 4, which is characterized in that the foam mixing liquid entrance (11) is provided with
One, the liquefied medium entrance (12) is provided with multiple, multiple liquefaction Jie around the foam mixing liquid entrance (11)
The direction of matter entrance (12) deviates from radial direction successively in the horizontal so that the liquid stream that the liquefied medium entrance (12) enters
It being capable of rotational flow.
7. foam generation module according to claim 4, which is characterized in that the liquefied medium entrance (12), which is provided with, stretches
The input pipe (16) of intracavitary is generated to the foam.
8. foam generation module according to claim 4, which is characterized in that the foam mixing liquid entrance (11), described
Liquefied medium entrance (12) and the foam outlet (13) are each provided with one；Wherein, the diameter D1 of the tubular structure and institute
The relationship stated between the diameter D2 of foam mixing liquid entrance (11) is：D1/D2=1.1~4；The foam mixing liquid entrance (11)
Diameter D2 and the diameter D3 of the liquefied medium entrance (12) between relationship be：D2/D3=4~10；The tubular structure
Diameter D1 and the diameter D4 of the foam outlet (13) between relationship be：D1/D4=0.8~2.
9. foam generation module according to claim 8, which is characterized in that the water of the stoste mixer (2) enters
Relationship between the diameter D6 and the diameter D5 of the stoste entrance (21) of mouthful (22) is：D6/D5=8~14；The water inlet
(22) the relationship between diameter D6 and the diameter D2 of the foam mixing liquid entrance (11) is：D6/D2=1.0~1.4.
10. foam generation module according to any one of claims 1 to 3, which is characterized in that the foam generates chamber
Inside it is provided at least one flow spoiler (14) for disturbing liquid stream.
11. foam generation module according to claim 10, which is characterized in that the flow spoiler (14) is formed as taper knot
Structure, hemispherical dome structure or platform structure；
The deck roof of the taper top of the pyramidal structure, the dome of the hemispherical dome structure or the platform structure is facing towards institute
State foam mixing liquid entrance (11).
12. foam generation module according to claim 10, which is characterized in that the cross section of the flow spoiler (14) is circle
Shape structure, the relationship between the diameter D7 and the diameter D2 of the foam mixing liquid entrance (11) of the flow spoiler (14) are：D7/
D2=1~4；And/or
The distance between the top of the flow spoiler (14) and outflux of the liquefied medium at the liquefied medium entrance (12) L
For 0~100mm.
13. foam generation module according to claim 10, which is characterized in that the foam generates intracavitary and is provided at least
One spaced porous structure (15)；It is provided with multiple holes on each porous structure (15)；The porous structure
(15) hole is towards the foam mixing liquid entrance (11), and the top of the relatively described flow spoiler (14) of the porous structure (15)
Far from the foam mixing liquid entrance (11).
14. a kind of foam fire-fighting equipment, which is characterized in that the foam fire-fighting equipment is provided with according in claim 1~13
Foam generation module described in any one.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/077196 WO2018157770A1 (en) | 2017-03-01 | 2018-02-26 | Foam production method, fire extinguishing method, and foam extinguishing appliance |
| US16/490,728 US11559711B2 (en) | 2017-03-01 | 2018-02-26 | Foam producing method, fire extinguishing method, and appliance for foam extinguishing |
| EP18761411.0A EP3590580B1 (en) | 2017-03-01 | 2018-02-26 | Foam production method, fire extinguishing method, and foam extinguishing appliance |
| AU2018226928A AU2018226928B2 (en) | 2017-03-01 | 2018-02-26 | Foam production method, fire extinguishing method, and foam extinguishing appliance |
| US18/156,435 US20230149753A1 (en) | 2017-03-01 | 2023-01-19 | Foam producing method, fire extinguishing method, and appliance for foam extinguishing |
Applications Claiming Priority (4)
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|---|---|---|---|
| CN2017101198600 | 2017-03-01 | ||
| CN201710117707 | 2017-03-01 | ||
| CN2017101177074 | 2017-03-01 | ||
| CN201710119860 | 2017-03-01 |
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Family
ID=61799796
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| CN201720950419.2U Active CN207186963U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720948770.8U Active CN207822315U (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| CN201710645358.3A Pending CN108525159A (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| CN201720948804.3U Active CN207785707U (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| CN201710645701.4A Pending CN108525164A (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201720950354.1U Active CN207186962U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201710645950.3A Active CN108525166B (en) | 2017-03-01 | 2017-08-01 | Foam generating method using liquid nitrogen, application thereof and fire extinguishing method |
| CN201710645486.8A Pending CN108525161A (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| CN201710645441.0A Pending CN108525160A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201710645548.5A Active CN108525162B (en) | 2017-03-01 | 2017-08-01 | Foam generating method and application thereof and fire extinguishing and fighting method |
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| CN201720950419.2U Active CN207186963U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720948770.8U Active CN207822315U (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| CN201710645358.3A Pending CN108525159A (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| CN201720948804.3U Active CN207785707U (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| CN201710645701.4A Pending CN108525164A (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201720950354.1U Active CN207186962U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201710645950.3A Active CN108525166B (en) | 2017-03-01 | 2017-08-01 | Foam generating method using liquid nitrogen, application thereof and fire extinguishing method |
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| CN201710645548.5A Active CN108525162B (en) | 2017-03-01 | 2017-08-01 | Foam generating method and application thereof and fire extinguishing and fighting method |
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| CN110450936A (en) * | 2019-07-30 | 2019-11-15 | 福建工程学院 | A kind of unmanned airship delivery formula high foaming rate fixed froth installation |
| CN112402844A (en) * | 2019-08-23 | 2021-02-26 | 中国石油化工股份有限公司 | Liquid nitrogen foam fire-fighting equipment and foam fire-fighting truck |
| CN116447522A (en) * | 2023-06-12 | 2023-07-18 | 河北燕山钢铁集团有限公司 | Wet-type oxyhydrogen mixing adjusting device and working method thereof |
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| CN207186963U (en) * | 2017-03-01 | 2018-04-06 | 中国石油化工股份有限公司 | Foam-generating device and foam fire-fighting equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108525160A (en) | 2018-09-14 |
| CN207822315U (en) | 2018-09-07 |
| CN108525166A (en) | 2018-09-14 |
| CN108525164A (en) | 2018-09-14 |
| CN207186962U (en) | 2018-04-06 |
| CN108525162B (en) | 2021-10-15 |
| CN108525162A (en) | 2018-09-14 |
| CN108525159A (en) | 2018-09-14 |
| CN108525166B (en) | 2021-04-23 |
| CN108525163A (en) | 2018-09-14 |
| CN207822314U (en) | 2018-09-07 |
| CN207785707U (en) | 2018-08-31 |
| CN207186963U (en) | 2018-04-06 |
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