CN108525159A - A kind of big flow foam-generating device and foam fire-fighting equipment - Google Patents
A kind of big flow foam-generating device and foam fire-fighting equipment Download PDFInfo
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- CN108525159A CN108525159A CN201710645358.3A CN201710645358A CN108525159A CN 108525159 A CN108525159 A CN 108525159A CN 201710645358 A CN201710645358 A CN 201710645358A CN 108525159 A CN108525159 A CN 108525159A
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- 239000006260 foam Substances 0.000 title claims abstract description 302
- 239000007788 liquid Substances 0.000 claims abstract description 156
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000203 mixture Substances 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 70
- 239000007789 gas Substances 0.000 description 42
- 229910052757 nitrogen Inorganic materials 0.000 description 34
- 238000005187 foaming Methods 0.000 description 11
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002309 gasification Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 235000013305 food Nutrition 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 206010054949 Metaplasia Diseases 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011493 spray foam Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
The invention discloses a kind of big flow foam-generating device and foam fire-fighting equipments, the foam-generating device includes the foam producer (1) that there is foam to generate chamber, and foam, which generates chamber, to be had for inputting the foam mixing liquid entrance (11) of foam mixing liquid, the liquefied medium entrance (12) for inputting liquefied medium and for the foam outlet (13) of foam output；Wherein, intracavitary is generated in foam, liquefied medium and foam mixing liquid mixing gasifying simultaneously foam, with the foam from foam outlet (13) output for putting out a fire；Wherein, foam mixing liquid entrance (11) is connected with the mixer (2) with mixing chamber, the mixing chamber has the stoste entrance (21) for inputting foam dope and the water inlet (22) for inputting water, and foam dope and water mix in the mixing chamber generates the foam mixing liquid.Foam-generating device and foam fire-fighting equipment provided by the invention, can generate big flow foam, and small, save space.
Description
Technical field
The present invention relates to fire control technologies, and in particular, to a kind of big flow foam-generating device and foam fire-fighting are set
It is standby.
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 is held essentially constant in course of injection pressure, and compressor and compressed gas cylinder air demand are limited, cannot be satisfied big flow
The requirement of high pressure gas supply, and if need to realize that big-flow high-pressure power supplies, need setting multiple compressors or compressed gas cylinder
(such as by taking the foam truck of a flow 150L/S as an example, the supply flow rate of gas is 1050L/s, and gas supply is needed by more
Large-scale air compressor machine supply), occupied space is big, in the space that oil depot tank field, device area often do not have arrangement, is unfavorable for scene
Arrangement.And it is had the following defects using the foam that aspirated mode generates：Foam bubbles are not of uniform size, foam is uneven, performance
The defects of unstable, foam is easily broken, burn resistance is poor, 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 will be greatly reduced, and at this time to ensure the high-pressure injection of extinguishing chemical, then need 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
It when fire extinguishing, then needs to produce big flow foam fire-fighting, foams mix flow quantity improves at this time, and the air demand of compressed gas also need to be with
Increase, and existing compressed air foam producing method cannot achieve the supply of big-flow high-pressure compressed gas, and foam is mixed
Flow quantity only 20~30L/s is closed, the fire attack of general scale is mainly used at present, such as building fire, ground small range
Trickle 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 big flow foam-generating device of present invention offer and foam fire-fighting equipment, to solve in the prior art using pressure
Defect existing for the fire-extinguishing apparatus of the fire extinguishing of contracting gas bubble and air storing type foam fire-fighting.
To achieve the goals above, one aspect of the present invention provides a kind of foam-generating device, which includes
The foam producer of chamber is generated with foam, the foam, which generates chamber, to be had to enter for inputting the foam mixing liquid of foam mixing liquid
Mouthful, the liquefied medium entrance for inputting liquefied medium and for the foam outlet of foam output；Wherein, it is produced in the foam
Raw intracavitary, liquefied medium and foam mixing liquid mixing gasifying simultaneously foam, with the foam from foam outlet output for putting out a fire；
Wherein, the foam mixing liquid entrance is connected with the mixer with mixing chamber, and the mixing chamber, which has, to be used
Stoste entrance in input foam dope and water inlet for inputting water, foam dope and water mix in the mixing chamber
Generate the foam mixing liquid.
Preferably, between the foam producer and the mixer, the liquefied medium entrance, the stoste entrance
And/or it is provided with flowmeter at the water inlet；Between the foam producer and the mixer, the liquefied medium enters
It is provided with control valve at mouth, the stoste entrance and/or the water inlet.
Preferably, the foam-generating device 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
Foam mixing liquid entrance is stated far from described in the top of the flow spoiler.
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-generating device stated.
Foam-generating device and foam fire-fighting equipment provided by the invention pass through foam mixing liquid and liquefied medium mixing energy
Enough obtain big flow foam, and due to eliminate using bulky compressor or compressed gas cylinder and it is bulky,
Complicated liquified gas vaporization device etc., foam-generating device 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-generating device in an embodiment of the invention；
Fig. 2 according to embodiment of the present invention in the foam producer of mixer is connected in foam-generating device
Structural schematic diagram；
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；
Fig. 6 is the combination diagram according to fire-extinguishing apparatus in an embodiment of the invention.
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- flowmeters；4- is controlled
Unit processed；10- high-jetting vehicles；20- liquid nitrogen tank cars；30- foam dope transport vehicles；40- fire hydrants/remote automatic-taking-water system；50- is stored up
Tank.
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-generating device, as shown in Figure 1, the foam-generating device includes that there is foam to generate chamber
Foam producer 1, the foam, which generates chamber, to be had for inputting the foam mixing liquid entrance 11 of foam mixing liquid, for inputting
The liquefied medium entrance 12 of liquefied medium and foam outlet 13 for foam output；Wherein, intracavitary is generated in the foam,
Liquefied medium and foam mixing liquid mixing gasifying simultaneously foam, with the foam from the output of the foam outlet 13 for fire extinguishing；
Wherein, the foam mixing liquid entrance 11 is connected with the mixer 2 with mixing chamber, and the mixing chamber has
Stoste entrance 21 for inputting foam dope and the water inlet 22 for inputting water, foam dope and water are in the mixing chamber
Interior mixing generates the foam mixing liquid.
Foam-generating device provided by the invention, the foam dope that will be inputted first from stoste entrance 21 by mixer 2
It is mixed with the water inputted from water inlet 22 and obtains foam mixing liquid and be delivered to foam producer 1, the foam inputted from mixer 2
Mixed liquor generates intracavitary in foam with the liquefied medium inputted from liquefied medium entrance 12 and mixes, in liquefied medium and foams mix
During liquid mixes, liquefied medium and the rapid gasification of foam mixing liquid heat exchange, and foam simultaneously, the mode energy of the generation foam
Big flow foam is enough obtained, and the foam obtained is uniform, stability is good.
Foam-generating device 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
With liquefied medium directly with foam mixing liquid mixed heat transfer and the mode that foams simultaneously.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-generating device provided by the invention, arrangement space can be saved, is conducive to site layout project,
Consequently facilitating the development of fire-fighting work.
The foam-generating device may be provided at foam truck, on high-jetting vehicle or on other fire-extinguishing apparatus.To make
Fire-extinguishing apparatus can work long hours, and stoste entrance 21, water inlet 22 and the liquefied medium entrance 12 of mixer 2 are separately connected
Extraneous feeding mechanism, for example, stoste entrance 21 can connect foam dope transport vehicle, water inlet 22 can connect fire hydrant or other
Water system, liquefied medium entrance 12 can connect liquefied medium tank car etc., with can provide respectively enough foam dopes, water and
Liquefied medium, so that foam fire-fighting equipment can work for a long time, with the fire extinguishing suitable for large-sized fire.
In the present invention, liquefied medium generates after being mixed with foam mixing liquid used by the foam-generating device 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 to need 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.
Since foam mixing liquid is main room temperature fluid, after being mixed with liquid nitrogen, foam mixing liquid can fully exchange heat with liquid nitrogen, and liquid nitrogen exists
Quick-gasifying in foam mixing liquid fluid, and immediately engage in foaming.After liquid nitrogen gasification, foam mixing liquid is because flow is very big, liquid
Temperature reduces seldom, completely negligible, does not influence foam quality.Even if liquid nitrogen is with foam mixing liquid first contacts, foam is mixed
A small amount of ice quarrel may be will produce by closing liquid, but in subsequent flowing, 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, in the foam-generating device,
It is provided with flowmeter between foam producer 1 and mixer 2, at liquefied medium entrance 12, stoste entrance 21 and/or water inlet 22
3；It is provided between foam producer 1 and mixer 2, at the liquefied medium entrance 12, stoste entrance 21 and/or water inlet 22
Control valve.According to the real-time monitoring of each flowmeter 3, each control valve can control to control the flow of each inlet.
In addition, in the foam mixing liquid entrance 11, the liquefied medium entrance 12, the stoste entrance 21, the water
It is also provided with pressure gauge at entrance 22 and/or the foam outlet 13, for detecting to facilitate the pressure of each mouthful of control.
The foam-generating device further includes control unit 4, described control unit 4 can with each flowmeter, each pressure gauge and
Real-time Monitoring Data is transmitted to control unit 4 by each control valve connection, flowmeter and pressure gauge, and control unit 4 is according to monitoring number
The volume and flow of each fluid are controlled according to each control valve is controlled, ensures each fluid in proportions mixing, can obtain so preferably
Foaming effect so that obtain foam is uniform, stability is good.
In a preferred embodiment of the invention, the structural schematic diagram of foam producer 1 and mixer 2 is as shown in Figure 2.
As shown in Fig. 2, foam producer 1 is tubular structure, one end of the tubular structure is provided at least one bubble
The other end of foam entry to mixed solution 11, tubular structure is provided at least one foam outlet 13, liquefied medium entrance 12 and foam
The angled setting of entry to mixed solution 11 so that two kinds of liquid also have certain cross-current while inputting foam generation chamber
It is dynamic, turbulent flow can be generated 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=.Diameter by controlling each mouth meets above-mentioned relation, contributes to
The discharge relation of each entrance is controlled, 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.Diameter by controlling each mouth meets above-mentioned relation, is conducive to the flow proportional for controlling each entrance, from
And enable to foaming more abundant, to the foam quality higher obtained.
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 foam mixing liquid entrance 11 is stated in the top of the flow spoiler 14 relatively of the porous structure 15 far from described.By flow-disturbing
The liquid stream that device 14 is smashed rushes at orifice plate 15 around flow spoiler 14, can further be disturbed to liquid stream by porous structure 15
It is dynamic, so that it is further mixed.
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-generating device.
The foam fire-fighting equipment can be that fire-fighting equipments, the foam-generating devices such as high-jetting vehicle or foam truck are set
It sets in the foam fire-fighting equipment.In application process, used water, foam dope and liquefied medium are both from the external world.
That is, the liquefied medium entrance 12 in foam-generating device can connect extraneous liquefied medium tank car, water inlet 12 connects fire hydrant
Or other water systems, stoste entrance 21 connect foam dope transport vehicle.In this way, liquefied medium, foam dope and water can be real
It is existing without interruption, so that the foam fire-fighting equipment continuously carries out the fire extinguishing of large-sized fire for a long time.
A kind of specific implementation mode of foam fire-fighting equipment as described above is provided below.In the embodiment, the fire extinguishing
Equipment includes high-jetting vehicle 10, and foam-generating device provided by the invention is arranged on high-jetting vehicle 10.The bubble of the foam-generating device
The foam outlet and foam mixing liquid entrance of foam generator 1 are located at the both ends of tubular structure.Foam mixing liquid entrance it is straight
Relationship between diameter D2 and the diameter D3 of liquid nitrogen entrance is：D2/D3=8；The diameter D1 of tubular structure and foam mixing liquid entrance
Diameter D2 between relationship be：D1/D2=1.4；Relationship between the diameter D1 of tubular structure and the diameter D4 of foam outlet
For：D1/D4=1.2；Angle between the direction and the direction of foam mixing liquid entrance of liquid nitrogen entrance is 30 °.Foam generates chamber
It is inside provided with flow spoiler, the flow spoiler is formed as conical structure shown in Fig. 3, the taper top direction of the conical structure
The cross section of foam mixing liquid entrance, 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=1.2, the top of flow spoiler and liquid nitrogen are between the outflux of inlet
Distance L be 10mm.Relationship between the diameter D6 of the water inlet of stoste mixer and the diameter D5 of stoste entrance is：D6/D5
=10；Relationship between the diameter D6 of the water inlet and the diameter D2 of foam mixing liquid entrance is：D6/D2=1.4.The foam
Generator foaming effect is good, can generate the foam of big flow performance stabilization.
As shown in fig. 6, the high-jetting vehicle 10 and liquid nitrogen tank car 20, foam dope transport vehicle 30 and fire hydrant/remotely for water system
40 connection of system supplies liquid nitrogen with the liquefied medium entrance 12 respectively on high-jetting vehicle 10, supplies foam dope to stoste entrance 21
And supply water to water inlet 22.High-jetting vehicle 10 and liquid nitrogen tank car 20, foam dope transport vehicle 30 and fire hydrant shown in fig. 6/
Remote automatic-taking-water system 40 can be used as a fire extinguishing marshalling, be used for 50 ejecting extinguishing foam of storage tank.Marshalling quantity can needed for wherein
It is determined according to fire scale.
Since foam-generating device provided by the invention can spray big flow foam, it is in this embodiment, high
DN150 can be increased to from the common caliber DN100 of foam fire-fighting by spraying the diameter of the injection line of vehicle 10, improve injection flow,
150L/s can be improved.In addition, for closely close to cupping jar etc., the thermal protection system of vehicle can also be increased, to effectively improve
The fire-fighting efficiency of foam.
By taking the 100000 vertical storage tank gross area fire that go out as an example, required equipment aggregate demand
The parameter of separate unit high-jetting vehicle：
Foams mix flow quantity：9000L/min(1.0MPa)
Foam dope delivery rate (3% type)：270L/min(16.2T/h)
Foam dope Minimum requirements amount：32.4 tons (2h)
Liquid nitrogen supply amount：63.6kg/min(3.9T/h)
Liquid nitrogen demand：7.8 tons (2h)
Liquid nitrogen injection pressure：Not less than 1.0MPa
High-jetting vehicle in present embodiment can generate the foam that the performance of big flow is stablized by foam-generating device, greatly
Improve fire-fighting efficiency greatly.
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-generating device, which is characterized in that the foam-generating device includes that the foam that there is foam to generate chamber generates
Device (1), the foam, which generates chamber, to be had for inputting the foam mixing liquid entrance (11) of foam mixing liquid, being situated between for inputting liquefaction
The liquefied medium entrance (12) of matter and foam outlet (13) for foam output；Wherein, intracavitary, liquid are generated in the foam
Change medium and foam mixing liquid mixing gasifying and foam, with the foam from the foam outlet (13) output for putting out a fire；
Wherein, the foam mixing liquid entrance (11) is connected with the mixer (2) with mixing chamber, and the mixing chamber has
Stoste entrance (21) for inputting foam dope and the water inlet (22) for inputting water, foam dope and water are in the mixing
Mixing generates the foam mixing liquid in chamber.
2. foam-generating device according to claim 1, which is characterized in that the foam producer (1) mixes with described
It is provided with stream between device (2), at the liquefied medium entrance (12), the stoste entrance (21) and/or the water inlet (22)
Gauge (3)；Between the foam producer (1) and the mixer (2), the liquefied medium entrance (12), the stoste enters
It is provided with control valve at mouth (21) and/or the water inlet (22).
3. foam-generating device according to claim 2, which is characterized in that the foam-generating device further includes that control is single
First (4), described control unit (4) control the control valve to adjust flow according to the flowmeter (3).
4. foam-generating device 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-generating device 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-generating device 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-generating device 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-generating device 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-generating device 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-generating device 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-generating device 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-generating device 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-generating device 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-generating device described in any one.
Priority Applications (5)
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|---|---|---|---|
| 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 |
| PCT/CN2018/077196 WO2018157770A1 (en) | 2017-03-01 | 2018-02-26 | Foam production method, fire extinguishing method, and foam extinguishing appliance |
| US18/156,435 US11980785B2 (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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| CN201710119860 | 2017-03-01 | ||
| CN201710117707 | 2017-03-01 | ||
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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 |
| CN201710645441.0A Pending CN108525160A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720950419.2U Active CN207186963U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720950354.1U Active CN207186962U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201720948770.8U Active CN207822315U (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| 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 |
| CN201720948804.3U Active CN207785707U (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201710645701.4A Pending CN108525164A (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201710645358.3A Pending CN108525159A (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
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| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow 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 |
| CN201710645441.0A Pending CN108525160A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720950419.2U Active CN207186963U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720950354.1U Active CN207186962U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201720948770.8U Active CN207822315U (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| 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 |
| CN201720948804.3U Active CN207785707U (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201710645701.4A Pending CN108525164A (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
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| CN108525166B (en) | 2021-04-23 |
| CN207186963U (en) | 2018-04-06 |
| CN108525162A (en) | 2018-09-14 |
| CN207822315U (en) | 2018-09-07 |
| CN207822314U (en) | 2018-09-07 |
| CN207785707U (en) | 2018-08-31 |
| CN207186962U (en) | 2018-04-06 |
| CN108525160A (en) | 2018-09-14 |
| CN108525164A (en) | 2018-09-14 |
| CN108525162B (en) | 2021-10-15 |
| CN108525161A (en) | 2018-09-14 |
| CN108525163A (en) | 2018-09-14 |
| CN108525166A (en) | 2018-09-14 |
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