CN207785707U - A kind of foam-generating device using liquefied medium - Google Patents
A kind of foam-generating device using liquefied medium Download PDFInfo
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- CN207785707U CN207785707U CN201720948804.3U CN201720948804U CN207785707U CN 207785707 U CN207785707 U CN 207785707U CN 201720948804 U CN201720948804 U CN 201720948804U CN 207785707 U CN207785707 U CN 207785707U
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- entrance
- mixing liquid
- liquefied medium
- generating device
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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
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- 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
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- 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 utility model discloses a kind of foam-generating devices using liquefied medium, the foam-generating device includes the foam producer (1) that there is foam to generate chamber, and the 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 the foam, liquefied medium and foam mixing liquid mixing gasifying simultaneously foam, with the foam from the foam outlet (13) output for putting out a fire.Foam-generating device provided by the utility model can generate big flow foam, and generate foam using the foam-generating device and occupy little space, and be conducive to site layout project.In addition, the utility model participates in frostproof froth n using inert medias such as liquid nitrogen, inert gas can be released after lather collapse, these inert gases can also play the role of inhibiting burning on combustible substance surface, help speed up putting out for fire.
Description
Technical field
The utility model is related to fire control technologies, and in particular to a kind of foam-generating device using liquefied medium.
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 continue with injection and will be greatly reduced, at this time to ensure the high-pressure injection of extinguishing chemical, then
It needs to supplement compressed gas into foamite container in time, and under big flow spray regime, only lean on air compressor machine and compressed gas steel
Bottle can not ensure enough supplements of compressed gas at all, lead to not effectively realize high-pressure injection requirement, influence extinguishing effect.When
When carrying out fire disaster fire extinguishing, then need to produce big flow foam fire-fighting, foams mix flow quantity improves at this time, compressed gas
Air demand also needs to increase therewith, and existing compressed air foam producing method cannot achieve the confession of big-flow high-pressure compressed gas
Answer, foams mix flow quantity only 20~30L/s is mainly used in the fire attack of general scale at present, as building fire,
Ground 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, the mode that need to provide a kind of generation foam newly uses compressed air foam to put out a fire in the prior art to overcome
And the defect present in air storing type foam fire-fighting.
Utility model content
The utility model provides a kind of foam-generating device using liquefied medium, to solve in the prior art using compression
Defect present in gas bubble fire extinguishing and air storing type foam fire-fighting.
To achieve the goals above, the utility model foam-generating device, the foam-generating device include having foam production
The foam producer of raw chamber, the foam, which generates chamber, to be had for inputting the foam mixing liquid entrance of foam mixing liquid, for defeated
Enter the liquefied medium entrance of liquefied medium and the foam outlet 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 foam outlet output for putting out a fire.
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, 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；
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.
Foam-generating device provided by the utility model avoids the technology path of large air compressor unit gas supply, also avoids
The liquefied mediums such as liquid nitrogen carry out the route that exchanging air metaplasia produces a large amount of compressed gas by large-scale gasification installation, but use liquid
The liquefied mediums such as nitrogen, liquid CO 2 are directly injected into foam mixing liquid heat exchange and the mode to foam simultaneously is steeped to obtain big flow
Foam disclosure satisfy that the demand of fire extinguishing.And foam-generating device provided by the utility model occupies little space, and is conducive to live cloth
It sets.
Description of the drawings
Fig. 1 is the structural schematic diagram according to foam-generating device in an embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the flow spoiler of pyramidal structure；
Fig. 3 is the structural schematic diagram of the flow spoiler of hemispherical dome structure；
Fig. 4 is the structural schematic diagram of the flow spoiler of platform structure；
Fig. 5 be the utility model an embodiment in foam generating system structural schematic diagram.
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- stoste mixers；21- stoste entrances；22- water inlets；3- liquid nitrogen containers；
4- foam delivery devices；5- water supply installations；6- foam dope tanks；The first pipelines of 71-；The second pipelines of 72-；73- third pipelines；
The 4th pipelines of 74-；75- first flow adjusters；76- second flow adjusters；77- third flow regulators；The 4th flows of 78-
Adjuster；79- controllers；8- foam output devices；81- foam pipelines；82- foam jet pipes；9- storage tanks；100- foams produce
Raw system.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below.It should be understood that described herein
Specific implementation mode is only used for describing and explaining the present invention, and is not intended to limit the utility model.
The utility model provides a kind of foam-generating device, which includes the bubble that there is foam to generate chamber
Foam generator 1, the foam, which generates chamber, to be had for inputting the foam mixing liquid entrance 11 of foam mixing liquid, for inputting liquefaction
The liquefied medium entrance 12 of medium and foam outlet 13 for foam output；Wherein, intracavitary, liquefaction are generated in the foam
Medium mixes and gasifies with foam mixing liquid, with the foam from the output of the foam outlet 13 for fire extinguishing.
Foam-generating device provided by the utility model avoids the technology path of large air compressor unit gas supply, also avoids
The liquefied mediums such as liquid nitrogen carry out the route that exchanging air metaplasia produces a large amount of compressed gas by large-scale gasification installation, but use liquid
The liquefied mediums such as nitrogen, liquid CO 2 are directly injected into foam mixing liquid heat exchange and the mode to foam simultaneously is steeped to obtain big flow
Foam disclosure satisfy that the demand of fire extinguishing.
Fire foam is generated using foam-generating device provided by the utility model, it is middle using compression compared with prior art
Air generate foam mode, avoid big flow spray demand when need to be equipped with multiple air compressors, compressed gas cylinder and lead
The big problem of the occupied space of cause.Foam is generated using the foam-generating device, is occupied little space, site layout project is conducive to.
The foam that the liquefied medium generates after being mixed with foam mixing liquid be for putting out a fire, therefore, liquefied medium institute
The type of the gas of generation is limited to help to put out a fire, and the gas of inhibition and smothering action can be played to fire, and to foam
Itself there cannot be destruction.Preferably, the liquefied medium can be liquid nitrogen, liquid CO 2, liquefied gas, liquid
Change at least one of halogenated hydrocarbon gas.The utility model participates in frostproof froth n using inert medias such as liquid nitrogen, in lather collapse
After can release inert gas, these inert gases combustible substance surface also can play the role of inhibit burning, contribute to plus
Fast fire is put out.
I.e. gasification is gas to liquefied medium usually under room temperature environment, and there is no need to operation bidirectionals can be obtained gas.Cause
This, the liquefied medium can in the form of the liquid stream be passed through in foam producer 1 and be mixed with foam mixing liquid, mix
Liquefied medium gasifies in journey, a large amount of gas is generated, to foam.
In preferred embodiments of the present invention, gas caused by the liquefied medium and the liquefied medium
The ratio (i.e. factor of created gase) of volume is 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 utility model people according to the present utility model, foam supply capacity
Appropriate is 5.4L/min.m2, foams mix flow quantity is 27130L/min.It is target with coefficient of foaming 7, air demand is answered
At least 190m3/ min, in addition loss amount, air demand is not less than 200m3/min.Energy is supplied according to current large air compressor unit
Power (20-28m3/ min), then it needs to configure 7-10 platform large size air compressor machine parallel connections and is supplied, the floor space of every air compressor machine is about
5-6m2, then total floor space of air-compressor set is 35-70m2.Attack time is 60min, and the consumption of foam mixing liquid is
1627m3.The wherein described large scale food tray fire fighting test refers to lighting diesel oil in the oil sump of diameter 21m, forms gross area
Then fire utilizes fixed froth installation spray foam into food tray, carries 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
Can be seen that from above-mentioned comparison can be greatly reduced using the utility model liquid nitrogen plenum system needed for air feed equipment
Site area, reduce gas supply difficulty so that large area fire extinguishing be possibly realized.
In liquefied medium and foam mixing liquid mixed process, the preferred flow proportional of liquefied medium and foam mixing liquid can
To be obtained by calculation.The flow of the utility model people discovery of the utility model, liquefied medium and foam mixing liquid meets following
The compressed air foam of better quality can be obtained when relationship：L=mV/nf.Wherein, L is the volume flow of liquefied medium, and m is
The coefficient of foaming of setting, for value generally in the preferred 5-20 of 5-200 more preferably within the scope of 6-8, V is the volume flow of foaming substance
Amount, n are the ratio of gas volume and the volume of the gas source that gas source can generate, and f is line loss, and value is in 1-
In 1.4 ranges.The wherein volume flow V 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 refers to that foam duration is longer, more difficult rupture, from
And extinguishing effect is more preferable.
Control the ratio control foam mixing liquid entrance 11 and liquefied medium entrance 12 of liquefied medium and foam mixing liquid
Flow proportional, flowmeter, pressure gauge and control valve can be arranged to control in this at each mouthful.
In present embodiment, the flow proportional for being preferably provided with foam mixing liquid entrance 11 and liquefied medium entrance 12 is：80
~160:1, more preferably 90~110：1.
Normally, the liquefied medium selects liquid nitrogen.By taking liquid nitrogen as an example, become 710 parts of nitrogen after a liquid nitrogen gasification, i.e.,
710 times of volume expansion.According to experimental results, if realizing good compressed air foam, the body of foam mixing liquid and liquid nitrogen
Product flow proportional 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 or more, the preferably pressure of 0.8-1.5MPa are mixed with liquefied medium.
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 concrete structure of foam-generating device provided by the utility model is described in detail below according to attached drawing.
In present embodiment, as shown in Figure 1, foam producer 1 is tubular structure, one end of the tubular structure be provided with to
A few foam mixing liquid entrance 11, the other end of tubular structure are provided at least one foam outlet 13, liquefied medium
Entrance 12 and the angled setting of foam mixing liquid entrance 11 so that two kinds of liquid also have while inputting foam generation chamber
Certain cross flow one 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 1, liquefied medium entrance 12 is arranged
There are one；In other embodiment, liquefied medium entrance 12 can be provided with multiple around foam mixing liquid entrance 11.
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, contributes to the discharge relation for controlling each entrance, so that foaming is more abundant, the foam quality to obtain is more
It is high.
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, to reach required mixed effect, can be situated between to foam mixing liquid entrance 11, liquefaction
Various changes or deformation are made in the setting of matter 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 1) that foam generates intracavitary.
In addition, in present embodiment, generates intracavitary in the foam of foam producer 1 and be provided with for disturbing liquid stream at least
One flow spoiler 14.
Wherein, the flow spoiler 14 is formed as pyramidal structure (such as Fig. 2), hemispherical dome structure (such as Fig. 3) or platform knot
The structure of structure (such as Fig. 4) 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.
The mounting portion 141 that intracavitary is generated for being fixed on foam can be set on flow spoiler 14.As the taper shown in Fig. 1 is disturbed
Device 14 is flowed, which is installed as taper top towards foam mixing liquid entrance 11, the liquid stream of liquefied medium and foam mixing liquid
Flow spoiler 14 is rushed at, liquid stream can be smashed so that flow disturbance, to which liquefied medium and foam mixing liquid are sufficiently mixed, 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.
In present embodiment, the foam of foam producer 1 generates intracavitary and is additionally provided at least one spaced orifice plate
Or the porous structures such as silk screen 15, each multiple holes are provided on the porous structure 15；The hole of the porous structure 15 is towards institute
State foam mixing liquid entrance 11, and the top of the flow spoiler 14 relatively of the porous structure 15 enters far from the foam mixing liquid
Mouth 11.The liquid stream smashed by flow spoiler 14 rushes at porous structure 15 around flow spoiler 14, can pass through porous structure 15 into one
Step disturbs liquid stream, it is made further to mix.
In specific application, foam mixing liquid entrance 11 can be connected for holding foam mixing liquid the foam-generating device
Container, or connection are used for mix-froth stoste and water to obtain the stoste mixer 2 of foam mixing liquid；Liquefied medium entrance 12
(for example) liquid nitrogen container or liquid nitrogen tank car can be connected.
In the embodiment shown in figure 1, foam mixing liquid entrance 11 connects stoste mixer 2, and stoste mixer 2 has
Stoste entrance 21 for inputting foam dope and the water inlet 22 for inputting water, foam dope and water are respectively from stoste entrance
21 and water inlet 22 enter to mix in stoste mixer 2 and can get foam mixing liquid, then foam mixing liquid is from foams mix
Liquid entrance 11 enters in foam producer 1.To obtain the foam mixing liquid of suitable concentration, foam dope and water need to be controlled to original
The feed flow of liquid mixer 2, the controls such as flowmeter and control valve can also be arranged in stoste entrance 21 and water inlet 22 in this.
In present embodiment, it is preferable that the diameter D6 of the water inlet 22 of the stoste mixer 2 and diameter D5 of stoste entrance 21
Between relationship be：D6/D5=8~14；Pass between the diameter D6 of water inlet 22 and the diameter D2 of foam mixing liquid entrance 11
System is：D6/D2=1.0~1.4.
Foam producer 1 foam outlet 13 can connection length be more than 40m pipeline, liquefied medium and foam mixing liquid
In the foam producer 1 after mixing, make its by length be more than 40m pipeline to jet port, flowed in this pipeline
When, liquefied medium also fully mixes progress with foam mixing liquid repeatedly, before ejection, will form stable bubble of good performance
Foam.
Foam-generating device provided by the utility model can be former with water supply installation, liquefied medium feedway and/or foam
Liquid supplying device connects to form foam generating system and be used for fire-extinguishing apparatus, for example, fire extinguisher, fire-fighting foams vehicle or high-jetting vehicle
On.The fire-extinguishing apparatus generates foam by the foam-generating device, can generate big flow foam, and occupied space
It is small.
Below to describe this reality for including the foam generating system 100 of foam-generating device provided by the utility model
With the technical solution of novel offer.
As shown in figure 5, the foam generating system 100 includes foam delivery device 4, water supply installation 5 and foam output device
8。
In one embodiment, foam delivery device 4 includes foam producer 1, stoste mixer 2, liquefied medium supply
Device (i.e. liquid nitrogen container 3) and foam dope feedway (i.e. foam dope tank 6), wherein stoste mixer 2 connects water supply installation
5 and foam dope tank 6, foam producer 1 connects stoste mixer 2 and liquid nitrogen container 3, to input foam into foam producer 1
Mixed liquor and liquid nitrogen.
The stoste entrance 21 for inputting foam dope of stoste mixer 2 is connect with foam dope tank 6, stoste mixer
2 water inlet 22 is connect with water supply installation 5, and the outlet of stoste mixer 2 is connect with foam producer 1.Stoste entrance 21 provides
Foam dope and the water that provides of water inlet 22 enter mixing in stoste mixer 2 and generate foam mixing liquid, the bubble of the generation
Foam mixed liquor is output in foam producer 1.
Preferably, as shown in figure 5, foam generating system 100 further comprises the first pipeline 71, the second pipeline 72, third
Pipeline 73, the 4th pipeline 74, first flow adjuster 75, second flow adjuster 76, third flow regulator 77, the 4th flow
Adjuster 78 and controller 79.
The first end of first pipeline 71 is connected with the outlet of foam dope tank 6, and the second end and stoste of the first pipeline 71 are mixed
The foam dope entrance 21 of clutch 2 is connected.The first end of second pipeline 72 is connect with water supply installation 5 to be connected, the second pipeline 72
Second end is connected with the water inlet 22 of stoste mixer 2.
The first end of third pipeline 73 is connected with the outlet of the stoste mixer 2, the second end and foam of third pipeline 73
The foam mixing liquid entrance 11 of generator 1 connects.The first end of 4th pipeline 74 is connected with the outlet of liquid nitrogen container 3, the 4th pipeline
74 second end is connected with the liquefied medium entrance 12 of foam producer 1.
First flow adjuster 75 is located on the first pipeline 71, and second flow adjuster 76 is located on the second pipeline 72, the
Three flow regulators 77 are located on third pipeline 73, and the 4th flow regulator 78 is located on the 4th pipeline 74.
Controller 79 is connected to control the flow of the foam dope in the first pipeline 71 with first flow adjuster 75, control
Device 79 processed is connected to control the flow of the water in the second pipeline 72, controller 79 and third flow with second flow adjuster 76
Adjuster 77 is connected to control the flow of the foam mixing liquid in third pipeline 73, controller 79 and the 4th flow regulator 78
It is connected to control the liquid nitrogen flow in the 4th pipeline 74, it is possible thereby to obtain better foaming effect, improves foam quality.
Preferably, first flow adjuster 75, second flow adjuster 76, third flow regulator 77 and the 4th flow tune
Each saved in device 78 may include flowmeter and flow control valve.Each in the flowmeter and the flow control valve can
To be located on corresponding one in the first pipeline 71, the second pipeline 72, third pipeline 73 and the 4th pipeline 74.For example, first
The flowmeter and flow control valve of flow regulator 75 can be located on the first pipeline 71.
Controller 79 can be connected with each in the flowmeter and the flow control valve so as to according to the flowmeter
Detected value controls the aperture of the flow control valve, it is possible thereby to the flow of the fluid in control piper.
In one embodiment, as shown in figure 5, foam generating system 100 may further include foam output device
8, there is foam output device 8 foam inlet and bubble jet mouth, the foam inlet to be connected to the foam outlet of foam producer 1
So as to foam producer 1 provide foam enter in foam output device 8, the foam inlet be connected to the bubble jet mouth with
Just foam output device 8 will be on foam jet to target object.By the way that foam output device 8 is arranged, so as to more convenient
Ground, accurately will be on foam jet to target object.
In one embodiment, foam output device 8 may include having the water tower fire truck of telescopic arm and soft
The foam pipeline 81 of property.The first port of foam pipeline 81 is the foam inlet, and the second port of foam pipeline 81 is
The part of the bubble jet mouth, the neighbouring second port of foam pipeline 81 is located on telescopic arm.
By stretching out the telescopic arm, so as to so that foam pipeline 81 second port more adjacent objects object (example
Such as ignition point), you can so that the bubble jet mouth more adjacent objects object, so as to which more efficiently foam jet is arrived
On target object, it is possible thereby to accurate injection be realized, to reduce foam lost amount, to improve fire-fighting efficiency.By keeping foam defeated
Send pipe 81 have flexibility, so as to so that foam pipeline 81 more easily as the telescopic arm extends and retracts.
In one embodiment, foam output device 8 may include fire-fighting robot and foam pipeline flexible 81.
There is the fire-fighting robot foam inlet and bubble jet mouth, the first end of foam pipeline 81 to be connected with the foam outlet, steep
The second end of foam delivery pipe 81 is connected with the foam inlet.
When to target object spray foam, which can be moved near target object, so as to more
Add effectively by foam jet to target object, it is possible thereby to realize accurate injection, to reduce foam lost amount, raising is gone out
Fiery efficiency.By make foam pipeline 81 have flexibility, so as to so that foam pipeline 81 more easily with the fire-fighting
Robot moves.Foam generating system 100 including the foam output device 8 can be used for putting out ground trickling fire.
In one embodiment, foam output device 8 may include the foam jet pipe of foam pipeline 81 and annular
82.Foam jet pipe 82 is suitable for around storage tank 9 (such as large-scale oil storage tank) setting for storing combustible, that is, working as bubble jet
When penetrating pipe 82 and being in use state, foam jet pipe 82 is arranged around the storage tank 9 for storing combustible.In other words, bubble jet
It can be round or ellipse to penetrate pipe 82.
Foam jet pipe 82 is equipped with circumferentially spaced multiple bubble jet mouths along foam jet pipe 82.Foam is defeated
The first end of pipe 81 is sent to be connected with the foam outlet, the second end of foam pipeline 81 is connected with foam jet pipe 82, i.e. foam
The first end of injection pipe 82 can be the foam inlet.Foam generating system 100 including the foam output device 8 can be used for
The fire extinguishing of product oil oil depot, medium-sized yard storage tank.
Foam-generating device provided by the utility model and its application are described by specific embodiment again below.
Embodiment 1
Foam is generated using foam-generating device provided by the utility model, foam producer therein has 1 foam
Entry to mixed solution, 1 liquid nitrogen entrance (i.e. liquefied medium entrance) and 1 foam outlet, foam outlet and foam mixing liquid entrance
It 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 is：
D2/D3=8, the relationship between the diameter D1 of tubular structure and the diameter D2 of foam mixing liquid entrance are：D1/D2=1.4, tubular
Relationship between the diameter D1 of structure and the diameter D4 of foam outlet is：D1/D4=1.2, foam generate intracavitary and are provided with flow-disturbing
Device, the flow spoiler are formed as conical structure shown in Fig. 2, and the taper top of the conical structure enters towards foam mixing liquid
Mouthful, the cross section of the flow spoiler is circular configuration, the diameter of the diameter D7 of the flow spoiler and the foam mixing liquid entrance
Relationship between D2 is：D7/D2=1.2, the distance L between the outflux of inlet is with liquid nitrogen on the top of flow spoiler
10mm.Liquid nitrogen storage tank and foams mix liquid storage tank are connected to each by pipeline with foam producer, the liquid nitrogen pipes entrance
Angle between direction and the direction of foam mixing liquid entrance is 10 °.
With 2m31.5m is stored in foams mix liquid storage tank3Foam mixing liquid (is purchased from 3% type MJPZ of Jiangsu Jiang Ya companies
Foam liquid product) for, woven hose caliber is DN25, operating pressure 1.2MPa in foams mix liquid storage tank, work in liquid nitrogen storage tank
It is 2MPa to make pressure.The flow of liquid nitrogen, wherein the flow V=11.4L/min of foam mixing liquid are determined according to formula mV=nLf,
Coefficient of foaming m=7, n=710, f=1.01 are set, thereby determines that the flow of liquid nitrogen is 0.11L/min, liquid nitrogen and foam is mixed
It closes liquid and generates foam to carry out mixing in above-mentioned flow feeding foam producer 1 shown in FIG. 1, foam is sprayed from foam outlet
Go out.Using《Fire foam standard》(GB15308-2006) it is 7.1 that the method recorded, which measures actual frostproof froth n multiple,
25% drainage time is 3min.
The foam is delivered to fire extinguishing region by foam output device to put out a fire, as a result successfully puts out 4.52m3State
Mark standard food tray fire, attack time only need 100s, are far above same foam, and compression sky is realized after replacing air compressor machine using liquid nitrogen
The big flow of gas foam extinguishing device is sprayed.
Embodiment 2
Foam-generating device is provided using the utility model and generates foam, and foam producer therein has 1 foam mixed
It closes liquid entrance, 1 liquid nitrogen entrance and 1 foam outlet, foam outlet and foam mixing liquid entrance and is located at tubular structure
Both ends.Relationship between the diameter D2 of foam mixing liquid entrance and the diameter D3 of liquid nitrogen entrance is：D2/D3=10, tubular structure
Diameter D1 and the diameter D2 of foam mixing liquid entrance between relationship be：D1/D2=2, the diameter D1 and foam of tubular structure
Relationship between the diameter D4 of outlet is：D1/D4=1.2, foam generate intracavitary and are provided with flow spoiler, and the flow spoiler is formed as
Hemispherical dome structure shown in Fig. 3, the dome of the hemispherical dome structure towards foam mixing liquid entrance, the flow spoiler it is transversal
Face is circular configuration, and the relationship between the diameter D7 of the flow spoiler and the diameter D2 of the foam mixing liquid entrance is：D7/D2
=1.6, the distance L between the outflux of inlet is 30mm with liquid nitrogen on the top of flow spoiler.Liquid nitrogen storage tank and foams mix
Liquid storage tank is connected to each by pipeline with foam producer, the side in the direction and foam mixing liquid entrance of the liquid nitrogen pipes entrance
Angle between is 30 °.
With 20m315m is stored in foams mix liquid storage tank3For foam mixing liquid (same as Example 1), woven hose caliber
For DN150, the operating pressure 0.8MPa in foams mix liquid storage tank, the operating pressure in liquid nitrogen storage tank is 1.5MPa.According to public affairs
Formula mV=nLf determines the flow of liquid nitrogen, wherein the flow V=3000L/min of foam mixing liquid, setting coefficient of foaming m=8, n=
710, f=1.17, it thereby determines that the flow of liquid nitrogen is 28.9L/min, liquid nitrogen and foam mixing liquid is sent into Fig. 1 with above-mentioned flow
Shown in carry out mixing in foam producer 1 and generate foam, foam is ejected from the foam outlet of foam producer 1.Using with
1 identical method of embodiment determines that frostproof froth n multiple is 7.2, and it is 3min to measure 25% drainage time.
The foam is delivered to fire extinguishing region by foam output device to put out a fire, as a result successfully puts out 450 ㎡'s
5000 cubic metres of tank fires only need 25s, realize compressed air foam fire-extinguishing apparatus big flow injection, attack time more than
The attack time of existing fire-fighting equipment is short.
Embodiment 3
It carries out generating foam and fire extinguishing according to the method for embodiment 2, unlike, the flow point of liquid nitrogen and foam mixing liquid
It Wei not 0.074L/min and 11.4L/min.As a result attack time is extended for 55s.
Embodiment 4
Carry out generating foam and fire extinguishing according to the method for embodiment 2, unlike, the diameter D2 of foam mixing liquid entrance with
Relationship between the diameter D3 of liquid nitrogen entrance is：D2/D3=3.As a result attack time is extended for 95s.Using same as Example 1
Method to measure practical foam coefficient of foaming be 4.2,25% drainage time is 1.5min.
Embodiment 5
It carries out generating foam and fire extinguishing according to the method for embodiment 2, unlike, top and the liquid nitrogen of flow spoiler 14 are entering
The distance between outflux at mouth 12 L is 150mm.As a result attack time is extended for 75s.Using side same as Example 1
It is 4.9 that method, which measures actual frostproof froth n multiple, and 25% drainage time is 2.0min.
Embodiment 6
Fire fighting truck includes a 25m3Liquid nitrogen storage tank vehicle and a high-jetting vehicle, high-jetting vehicle configured with mixing arrangement (with reality
It is identical to apply example 1) and the foam transport vehicle of foam dope (resist molten aqueous foam-forming solution AFFF/AR-3%), the spray of high-jetting vehicle be provided
It penetrates pipe caliber and takes DN120, configure the fire pump of a 150L/s (1.0MPa).It is supplied to fire fighting truck by fixed fire water pipe network
Water.
Liquid nitrogen, foam dope and water are sent into 189L/min, 270L/min and 8730L/min in foam producer respectively
It carries out mixing and generates foam, foam is ejected from the foam outlet of foam producer, the flow 9000L/min of foam, jet length
From 40m, height 30m is elevated.It is 3min to measure 25% drainage time using method same as Example 1.
Embodiment 7
Using liquid carbon dioxide as liquefied medium, coefficient of foaming is set as 7, foams mix flow quantity is 150L/s.Liquid
Carbon dioxide jet direction is opposite with the flow direction of foam mixing liquid, in foam-generating device, liquid CO 2 and bubble
Foam blended liquid phase is to injection.
The flow for adjusting liquid carbon dioxide is 1.55L/s.In the moment that liquid carbon dioxide sprays, liquid carbon dioxide
It is hit by the foams mix liquid stream of high speed, rapid gasification, dispersion, and is vigorously mixed with foam mixing liquid, pass through certain length
Foam pipeline line generates foam uniformly, fine and smooth.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail above in association with attached drawing
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
It is combined in any suitable manner including each particular technique feature.In order to avoid unnecessary repetition, the utility model
Various combinations of possible ways are no longer separately illustrated.But these simple variants and combination equally should be considered as the utility model institute
Disclosure belongs to the scope of protection of the utility model.
Claims (10)
1. foam-generating device, which is characterized in that the foam-generating device includes the foam producer that there is foam to generate chamber
(1), the foam generates chamber and has for inputting the foam mixing liquid entrance (11) of foam mixing liquid, for inputting liquefied medium
Liquefied medium entrance (12) and foam outlet (13) for foam output；Wherein, intracavitary, liquefaction are generated in the foam
Medium and foam mixing liquid mixing gasifying simultaneously foam, with the foam from the foam outlet (13) output for fire extinguishing.
2. foam-generating device according to claim 1, which is characterized in that the foam producer (1) is tubular structure,
One end of the tubular structure is provided at least one foam mixing liquid entrance (11), and the other end of the tubular structure is set
It is equipped at least one foam outlet (13), the liquefied medium entrance (12) and foam mixing liquid entrance (11) angulation
Degree setting.
3. foam-generating device according to claim 2, 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 °.
4. foam-generating device according to claim 2, 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.
5. foam-generating device according to claim 1, 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.
6. foam-generating device according to claim 2, 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.
7. the foam-generating device according to any one of claim 1~6, which is characterized in that the foam generates chamber
Inside it is provided at least one flow spoiler (14) for disturbing liquid stream.
8. foam-generating device according to claim 7, 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).
9. foam-generating device according to claim 7, which is characterized in that the cross section of the flow spoiler (14) is circle
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.
10. foam-generating device according to claim 7, 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).
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| CN201710645486.8A Pending CN108525161A (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device 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 |
| 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 |
| CN201710645441.0A Pending CN108525160A (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 |
| CN201710645548.5A Active CN108525162B (en) | 2017-03-01 | 2017-08-01 | Foam generating method and application thereof and fire extinguishing and fighting method |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| 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 |
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| CN201710645358.3A Pending CN108525159A (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| CN201710645486.8A Pending CN108525161A (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device 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 |
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| CN201710645441.0A Pending CN108525160A (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 |
| CN201710645548.5A Active CN108525162B (en) | 2017-03-01 | 2017-08-01 | Foam generating method and application thereof and fire extinguishing and fighting method |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| 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 |
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| WO2021120532A1 (en) * | 2019-12-17 | 2021-06-24 | 徐工集团工程机械股份有限公司 | Foam uniform-mixing pipe, mixed foam fire extinguishing system, control method therefor, and fire fighting truck |
| CN110841222B (en) * | 2019-12-17 | 2023-08-18 | 徐工集团工程机械股份有限公司 | Foam uniform mixing pipe, mixed foam fire extinguishing system, control method of mixed foam fire extinguishing system and fire truck |
| CN112156403A (en) * | 2020-10-14 | 2021-01-01 | 应急管理部天津消防研究所 | Compressed air foam gas-liquid mixer and design method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108525160A (en) | 2018-09-14 |
| CN108525166B (en) | 2021-04-23 |
| CN108525164A (en) | 2018-09-14 |
| CN207186962U (en) | 2018-04-06 |
| CN108525162A (en) | 2018-09-14 |
| CN108525163A (en) | 2018-09-14 |
| CN108525162B (en) | 2021-10-15 |
| CN108525161A (en) | 2018-09-14 |
| CN108525159A (en) | 2018-09-14 |
| CN207822314U (en) | 2018-09-07 |
| CN207822315U (en) | 2018-09-07 |
| CN108525166A (en) | 2018-09-14 |
| CN207186963U (en) | 2018-04-06 |
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Effective date of registration: 20221117 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: No.218, Yan'an Third Road, Shinan District, Qingdao City, Shandong Province 266101 Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC Research Institute OF SAFETY ENGINEERING |