CN207186962U - Foam-generating device and fire extinguisher - Google Patents
Foam-generating device and fire extinguisher Download PDFInfo
- Publication number
- CN207186962U CN207186962U CN201720950354.1U CN201720950354U CN207186962U CN 207186962 U CN207186962 U CN 207186962U CN 201720950354 U CN201720950354 U CN 201720950354U CN 207186962 U CN207186962 U CN 207186962U
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- Prior art keywords
- foam
- entrance
- mixing liquid
- liquefied medium
- generating device
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
Abstract
The utility model discloses a kind of foam-generating device and fire extinguisher, foam-generating device includes foam producer (1), foam producer is provided with foam mixing liquid entrance (11), the foam of liquefied medium entrance (12) and foam outlet (13) produces chamber, foam mixing liquid entrance connects the foam mixing liquid storage device (2) that oriented foam produces chamber conveying foam mixing liquid, liquefied medium entrance connects the liquefied medium storage device (3) that oriented foam produces chamber transportation of liquefied medium, liquefied medium produces intracavitary mixing gasifying in foam with foam mixing liquid and foamed, the foam for fire extinguishing is exported from foam outlet.Foam-generating device and fire extinguisher provided by the utility model can produce big flow foam, and small volume, save space.Frostproof froth n is participated in using inert medias such as liquid nitrogen, inert gas can be discharged after lather collapse, inert gas plays a part of suppressing burning in combustible substance surface energy, helps speed up putting out for fire.
Description
Technical field
Fire control technology is the utility model is related to, in particular it relates to a kind of foam-generating device and fire extinguisher.
Background technology
Existing compressed air foam fire extinguishing is main to be carried out by the way of gas mixes generation foam with foam mixing liquid
Fire extinguishing.Specific compressed air foam fire-fighting mode mainly has the fire extinguishing of gerotor type compressed air foam and air storing type foam fire-fighting two
Kind mode.
Wherein, the mode of gerotor type compressed air foam fire extinguishing generally use compressor or compressed gas cylinder is supplied
Gas, and compressor and compressed gas cylinder air demand are limited, can not meet the requirement of big-flow high-pressure power supply, and if needing to realize
Big-flow high-pressure power supplies, then needs to set multiple compressors or compressed gas cylinder (such as with flow 150L/S foam to disappear
Exemplified by anti-car, the supply flow rate of gas is 1050L/s, and it, which is supplied, needs to be supplied by more large-scale air compressor machine), its space-consuming
Greatly, often do not possess the space of arrangement in oil depot tank field, device area, be unfavorable for site layout project.And using air-breathing gas foaming side
Following defect be present in foam caused by formula：Foam bubbles are not of uniform size, foam is uneven, performance is unstable, foam is easily broken,
The defects of burn resistance is poor, fire-fighting efficiency is not high.
Another air storing type foam fire-fighting is generally in foamite container memory storage compressed gas, when big flow is sprayed, pressure
Contracting gas will be consumed largely, and injection pressure is also greatly reduced, and now to ensure the high-pressure injection of extinguishing chemical, then needs in time to fire extinguishing
Supplement compressed gas in agent container, and under big flow spray regime, it can not only be protected at all by air compressor machine and compressed gas cylinder
Enough supplements of compressed gas are demonstrate,proved, leads to not effectively realize high-pressure injection requirement, influences extinguishing effect.When progress fire disaster
During fire extinguishing, then need to produce big flow high-foaming fire-extinquishing, now foams mix flow quantity improves, the air demand of compressed gas
It need to increase therewith, and existing compressed air foam producing method can not realize the supply of big-flow high-pressure compressed gas, it steeps
Foam mixing flow quantity only 20~30L/s, the fire attack of general scale is mainly used at present, as building fire, ground are small
Scope trickling fire etc., it can not be in the application in large-scale storage tank fire or large-scale ground spill fire.
For this reason, it may be necessary to design a kind of new foam-generating device or equipment to produce foam, adopted in the prior art with overcoming
The defects of present in the fire-extinguishing apparatus of compressed air foam fire extinguishing and air storing type foam fire-fighting.
Utility model content
The utility model provides a kind of foam-generating device and fire extinguisher, to solve to steep using compressed gas in the prior art
The fire-extinguishing apparatus space-consuming of foam fire extinguishing and air storing type foam fire-fighting is big, weight is big, and can not effectively realize big flow foam
Supply the problem of.
To achieve these goals, on the one hand the utility model provides a kind of foam-generating device, the foam-generating device
Including foam producer, the foam producer is provided with foam mixing liquid entrance, liquefied medium entrance and foam outlet
Foam produce chamber, the foam mixing liquid entrance be connected with for the foam produce chamber conveying foam mixing liquid foam
Mixed liquor storage device, the liquefaction that the liquefied medium entrance is connected with for producing chamber transportation of liquefied medium to the foam are situated between
Matter storage device, the liquefied medium can produce intracavitary mixing gasifying in the foam with the foam mixing liquid and foam,
To export the foam for fire extinguishing from the foam outlet.
Between the foam producer and the foam mixing liquid storage device and the foam producer and the liquefaction
Control valve is provided between medium storage device.
Preferably, the foam-generating device also includes control unit, and described control unit controls the control valve.
Preferably, the foam producer is tubular structure, and one end of the tubular structure is provided with least one described
Foam mixing liquid entrance, the other end of the tubular structure are provided with least one foam outlet, and the liquefied medium enters
Mouth and the angled setting of the foam mixing liquid entrance.
Preferably, the foam mixing liquid entrance is provided with one, and 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, the foam mixing liquid entrance is provided with one, and 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 produces intracavitary.
Preferably, the foam mixing liquid entrance, the liquefied medium entrance and the foam outlet are each provided with one；
Wherein, the relation between the diameter D2 of the diameter D1 of the tubular structure and the foam mixing liquid entrance is：D1/D2=1.1
~4；Relation between the diameter D3 of the diameter D2 of the foam mixing liquid entrance 11 and the liquefied medium entrance 12 is：D2/
D3=4~10；Relation between the diameter D1 of the tubular structure and the diameter D4 of the foam outlet 13 is：D1/D4=0.8
~2.
Preferably, the foam generation intracavitary is provided with 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, the diameter D7 of the flow spoiler and the foams mix
Relation between the diameter D2 of liquid entrance is：D7/D2=1~4；And/or
Distance L of the top and liquefied medium of the flow spoiler between the flow export of the liquefied medium porch is 0
~100mm.
Preferably, the foam produces intracavitary and is provided with least one spaced loose structure；It is each described porous
Multiple holes are provided with structure；The hole of the loose structure is towards the foam mixing liquid entrance, and the loose structure is relative
The top of the flow spoiler is away from the foam mixing liquid entrance.
Another aspect of the present utility model also provides a kind of fire extinguisher, and the fire extinguisher is provided with foam production as described above
Generating apparatus.
Foam-generating device and fire extinguisher provided by the utility model can by foam mixing liquid and liquefied medium mixing
Big flow foam is obtained, and due to eliminating bulky compressor, air blower or compressed gas cylinder etc., this practicality is newly
The foam-generating device and fire extinguisher small volume that type provides, save space.
Brief description of the drawings
Fig. 1 is the schematic diagram according to foam-generating device in an embodiment of the present utility model；
Fig. 2 is the structural representation of foam producer in foam-generating device；
Fig. 3 is the structural representation of the flow spoiler of pyramidal structure；
Fig. 4 is the structural representation of the flow spoiler of hemispherical dome structure；
Fig. 5 is the structural representation of the flow spoiler of platform structure；
Fig. 6 is the structural representation according to fire extinguisher in an embodiment of the present utility model.
Description of reference numerals：
1- foam producers；11- foam mixing liquid entrances；12- liquefied medium entrances；13- foam outlets；14- flow spoilers；
141- installation portions；15- loose structures；16- input pipes；2- foam mixing liquid storage devices；3- liquefied medium storage devices；4- is controlled
Valve processed；5- control units；10- fire extinguishers；101- cylinder body of fire extinguisher；102- playpipes；The control valves of 103- first；104- second is controlled
Valve processed；105- pressure gauges；106- pipette.
Embodiment
Specific embodiment of the present utility model is described in detail below.It is it should be appreciated that described herein
Embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.
The utility model provides a kind of foam-generating device, and the foam-generating device includes foam producer 1, the foam
Generator 1 is provided with the foam with foam mixing liquid entrance 11, liquefied medium entrance 12 and foam outlet 13 and produces chamber, described
Foam mixing liquid entrance 11 is connected with the foam mixing liquid storage device for producing chamber conveying foam mixing liquid to the foam
2, the liquefied medium entrance 12 is connected with the liquefied medium storage device for producing chamber transportation of liquefied medium to the foam
3, the liquefied medium and the foam mixing liquid can produce intracavitary mixing gasifying in the foam and foam, with from the bubble
Foam outlet 13 exports the foam for fire extinguishing.
Foam-generating device provided by the utility model produces the liquid of chamber input by liquefied medium storage device 3 to foam
Change medium to mix with the foam mixing liquid that foam mixing liquid storage device 2 inputs, liquefied medium mixes in mixed process with foam
Liquid heat exchange gasification is closed, and is foamed simultaneously, the mode of the generation foam can obtain big flow high power foam, and the foam obtained
Uniformly, stability is good.
It is additionally, since the technology that foam-generating device provided by the utility model avoids the supply such as air compressor machine, air blower
Route, the route that the liquefied mediums such as liquid nitrogen carry out a large amount of compressed gas of exchanging air metaplasia production by gasification installation is also avoided, by
This eliminates bulky compressor or compressed gas cylinder and bulky, baroque liquified gas vaporization device etc..
Foam-generating device small volume provided by the utility model, space is saved, set particularly suitable for the portable fire extinguishing for being arranged on small-sized
In standby, for example, hand fire extinguisher, trailer-type fire extinguisher or transportable fire extinguisher etc..Using the mobile foam of this module
Equipment, its volume is all little, and trailer-type fire extinguisher therein belongs to the larger mobile foam equipment of volume, is characterized in liquid
Nitrogen storage tank (only a few liters) instead of the equipment such as high pressure gas storage space or air compressor machine or air blower, reduce the body of whole equipment
Product, easy to use and flexible, and be usually normal pressure storage.When in use liquid nitrogen is discharged to form gases at high pressure from container,
Follow-up foams mix foaming process is participated in again.
It should be noted that, liquefied medium produces after being mixed with foam mixing liquid used by the foam-generating device herein
Foam be used for put out a fire, therefore, the species of gas caused by liquefied medium is defined to help to put out a fire, i.e., can to fire rise
To the gas suppressed with smothering action.Preferably, the liquefied medium can be liquid nitrogen, liquid CO 2, liquefied gas
At least one of body, liquefaction halogenated hydrocarbon gas.It is highly preferred that the liquefied medium is liquid nitrogen.The utility model uses liquid nitrogen
Frostproof froth n is participated in Deng inert media, inert gas can be discharged after lather collapse, these inert gases are in combustible substance table
Face can also play a part of suppressing burning, help speed up putting out for fire.
In preferred embodiment of the present utility model, gas caused by the liquefied medium and the liquefied medium
The ratio of volume is not less than 100, preferably 200~1500, more preferably 500~1000.
Due to liquefied medium such as liquid nitrogen can produce rapidly gas and caused gas can advantageously with foams mix
Liquid produces bubble, and the expansion ratio of liquefied medium is generally larger, not less than 100, many even as high as more than 500, such as liquid nitrogen
Expansion ratio be usually that the liquid nitrogen of 710, namely 1 volume can generally provide the nitrogen of 710 volumes, and the pressure of conventional compressed air
Contracting is than being no more than 20, and thus the volume of gas as caused by liquefied medium greatly increases compared with liquefied medium volume in itself,
The small volume of used liquefied medium in the case where obtaining same amount of gas, therefore can be directly by liquefied medium such as
Liquid nitrogen produces 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 mixes with foam mixing liquid, thus greatly reduces the volume of foam-generating device, improves device
Flexibility and application places are widened.
In mixed process, the ratio of liquefied medium and foam mixing liquid can according to needed for foam mixing liquid gas amount
And liquefied medium be capable of caused by the amount of gas be calculated.Utility model people of the present utility model has found, liquefied medium with
The flow of foam mixing liquid meets the compressed air foam that better quality can be obtained during following relations：L=mV/nf.Wherein, L
It is the volume flow of liquefied medium, m is the coefficient of foaming of setting, and value is typically in the preferred 5-20 of 5-200 more preferably in 6-8 scopes
Interior, V is the volume flow of foaming substance, n be gas source can caused by gas volume and the ratio of the volume of the gas source,
F is line loss, and value is in the range of 1-1.4.The wherein volume flow V of foaming substance according to fire area by《Foam fire-fighting
Systematic design discipline》(GB50151-2010) determine.The better quality of compressed air foam refers to that foam duration is longer, more
Do not allow it is easily rupturable, so as to extinguishing effect it is more preferable.
Preferably, the flow proportional of foam mixing liquid entrance 11 and liquefied medium entrance 12 is：80~160：1, more preferably
For 90~110：1.
By taking liquid nitrogen as an example, become 710 parts of nitrogen, i.e. 710 times of volumetric 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 the range of 1.
Because foam mixing liquid is main normal temperature fluid, after it is mixed with liquid nitrogen, foam mixing liquid fully can 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 mixes
A small amount of ice quarrel may be produced by closing liquid, but in subsequent flowing, ice quarrel can melt quickly, not influence to foam completely.
In present embodiment, between foam producer 1 and foam mixing liquid storage device 2 and foam producer 1 and liquid
Control valve 4 is provided between change medium storage device 3.In addition, can also be in foam mixing liquid entrance 11, liquefied medium entrance 12
And/or pressure gauge is provided with foam outlet 13, to detect the pressure at each mouthful in real time.
The foam-generating device also includes control unit 5, and control unit 5 is connected with control valve 4, passes through control unit with control
5 control the control valve 4, so as to controlling the switch of foam mixing liquid entrance 11 and liquefied medium entrance 12.It is noted that
The configurable control unit 5 when the foam-generating device is applied in trailer-type foam device, and hand extinguisher and cart type
Fire extinguisher submission is small, simple in construction, does not configure control unit 5 typically.
In preferred embodiment of the present utility model, liquefied medium storage device 3 is the liquid nitrogen container for being stored with liquid nitrogen, is steeped
Foam mixed liquor storage device 2 is the original fluid container for being stored with foam mixing liquid, and foam producer 1 can use structure as shown in Figure 2.
The structure of foam producer 1 is specifically described below.
As shown in Fig. 2 foam producer 1 is tubular structure, one end of the tubular structure is provided with least one bubble
Foam entry to mixed solution 11, the other end of tubular structure are provided with least one foam outlet 13, liquefied medium entrance 12 and foam
Entry to mixed solution 11 is angled to be set so that two kinds of liquid are while foam generation chamber is inputted, also with certain cross-current
It is dynamic, can turbulization and the mixed effect that has had.
Preferably, foam mixing liquid entrance 11 is provided with one, liquefied medium entrance 12 surrounds the foam mixing liquid
Entrance 11 is provided with one or more, the direction and the side of 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 set
There is one；In further embodiment, liquefied medium entrance 12 can be provided with multiple, liquefied medium around foam mixing liquid entrance 11
Storage device 3 can be connected with the liquefied medium entrance 12 respectively by multiple pipelines.
The feelings of one are each provided with the foam mixing liquid entrance 11, the liquefied medium entrance 12 and foam outlet 13
Under condition；
Relation between the diameter D2 of the diameter D1 of the tubular structure and 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
Diameter D3 between relation be：D2/D3=4~10；The diameter D1 of the tubular structure and the foam outlet 13 diameter
Relation between D4 is：D1/D4=0.8~2, preferably D1/D4=0.8~1.2.By controlling the diameter of each mouth to meet above-mentioned pass
System, be advantageous to control the flow proportional of each entrance, so that foaming is more abundant, so as to which the foam quality obtained is higher.
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 set as described above, can be to foam mixing liquid entrance 11, liquefied medium to reach more preferable 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 is settable 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 footpath 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 direction, is the transverse direction with longitudinally perpendicular direction.
In addition, foam outlet 13 may also set up multiple, for connecting injection line respectively, produced so as to pass through foam
Device 1, sprayed to multiple directions.
To better control over the flow direction of the liquefied medium entered from liquefied medium entrance 12, the liquefied medium entrance 12 can
Set and stretch to the input pipe 16 (as shown in Figure 2) that foam produces intracavitary.
In addition, the foam in foam producer 1 produces intracavitary and is provided with 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 to the foam mixing liquid entrance 11.Preferably, the cross section of the flow spoiler 14
For circular configuration, the relation 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 be a preferable scope, and if D7 and D2 are out of proportion to cause that frostproof froth n is insufficient, resistance becomes big and stream
The bad phenomenons such as amount reduction.For example if the diameter D7 ratios of flow spoiler diminish, foam insufficient, and if D7 ratio becomes
Greatly, then resistance can be caused big, flow-reduction.In a word, the degree of D7 and D2 proportionate relationship deviation aforementioned proportion relation is bigger, right
The influence degree of foaming is bigger.
Preferably, the top of the flow spoiler 14 and liquefied medium are between the flow export at the liquefied medium entrance 12
Distance L be 0~100mm.Under the preferred embodiment, mixed material can form turbulent flow, so that gas-liquid mixed is 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, then it can lead to not to be formed
Turbulent flow, gas-liquid mixed are insufficient.
Flow spoiler 14 as shown in Fig. 2 is pyramidal structure, can be set on flow spoiler 14 and produces chamber for being fixed on foam
Interior installation portion 141 (such as Fig. 3).The flow spoiler 14 is installed as taper top towards foam mixing liquid entrance 11, liquefied medium and bubble
The liquid stream of foam mixed liquor rushes at flow spoiler 14, can smash liquid stream so that flow disturbance, so as to which liquefied medium and foam mixing liquid fill
Divide mixing, to obtain uniform in foaming, foam of good performance.
Certainly, the set-up mode of flow spoiler 14 is also not necessarily limited to as described above, for example, settable multiple flow spoilers, are distributed in bubble
Foam produces the diverse location of intracavitary, and any type of flow spoiler that flow-disturbing effect can be played to liquid stream.
The foam of foam producer 1 produces intracavitary and is additionally provided with the porous knots such as at least one spaced orifice plate or silk screen
Structure 15, each it is provided with multiple holes on the loose structure 15；The hole of the loose structure 15 enters towards the foam mixing liquid
Mouth 11, and the top of the relatively described flow spoiler 14 of the loose structure 15 is away from the foam mixing liquid entrance 11.By flow spoiler
14 liquid streams smashed, rush at loose structure 15 around flow spoiler 14, further liquid stream can be carried out by loose structure 15
Disturbance, makes it further mix.
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 utility model, a kind of fire extinguisher is also provided, the fire extinguisher is provided with as described above
Foam-generating device.
The fire extinguisher can be hand extinguisher, or transportable fire extinguisher, the two structure is substantially uniform, simply
Volume is different.
Fig. 6 provides the fire extinguisher 10 in an embodiment of the present utility model.As shown in fig. 6, the fire extinguisher
In 10, the foam producer 1 and foam mixing liquid storage device 2 of foam-generating device are arranged in foam annihilator cylinder 101,
Liquefied medium storage device 3 (i.e. liquid nitrogen container) (may also set up internally) certainly outside foam annihilator cylinder 101, and liquefaction is situated between
The bubble that matter storage device 3 is supplied to the liquid nitrogen that foam producer 1 is supplied with foam mixing liquid storage device 2 to foam producer 1
Foam mixed liquor mixing gasifying foams, and caused foam ejects from playpipe 102.
Embodiment one：
By taking volume 8L portable foam annihilator as an example, the bubble of the foam producer 1 of foam-generating device in the fire extinguisher
Foam exports and foam mixing liquid entrance is located at the both ends of tubular structure respectively.The diameter D2 of foam mixing liquid entrance and liquid nitrogen entrance
Diameter D3 between relation be：D2/D3=8；Between the diameter D1 of tubular structure and the diameter D2 of foam mixing liquid entrance
Relation is：D1/D2=1.4；Relation between the diameter D1 of tubular structure and the diameter D4 of foam outlet is：D1/D4=1.2；
Angle between the direction of liquid nitrogen entrance and the direction of foam mixing liquid entrance is 30 °.Foam produces intracavitary and is provided with flow spoiler,
The flow spoiler is formed as the conical structure shown in Fig. 3, the taper top of the conical structure towards foam mixing liquid entrance,
The cross section of the flow spoiler is circular configuration, the diameter D2 of the diameter D7 of the flow spoiler and the foam mixing liquid entrance it
Between relation be：D7/D2=1.2, the distance L of the top and liquid nitrogen of flow spoiler between the flow export of porch is 10mm.
In the embodiment, the amount of storage of foam mixing liquid is set to 7L, coefficient of foaming 7, and injection pressure is not less than 0.6MPa,
Then gas flow needed for foaming is 49L, and residual gas is 8L (0.6MPa) in Foam Container after injection, so required liquid nitrogen volume is
0.15L。
When using the fire extinguisher, the foams mix for first injecting foam mixing liquid in cylinder body of fire extinguisher 101 stores dress
Put in 2, foam producer 1 is arranged in cylinder and pipette 106 is communicated in foam mixing liquid storage device 2, will be filled with
The liquefied medium storage device 3 (liquid nitrogen bottle, volume 150ml) of liquid nitrogen is arranged on cylinder.In daily preservation, cylinder body of fire extinguisher
It is atmospheric pressure state in 101.When implementing to put out a fire, the first control valve 103 of liquid nitrogen bottle is first turned on, liquid nitrogen is made in gravity and pressure
With in the foam producer 1 betted in cylinder body of fire extinguisher 101 (normal pressure), because liquid nitrogen density (0.82) is less than water, so again will
Cylinder turn upside down it is several under, liquid nitrogen with the foam mixing liquid in cylinder fully contact and immediately gasify, and cylinder internal pressure is opened
Begin to rise, (pressure gauge 105 is provided with cylinder) when cylinder internal pressure rises to 0.6MPa, open second on cylinder immediately
Control valve 104, playpipe 102 is directed at flame and implements ejecting extinguishing at all.Because liquid nitrogen storage temperature is -196 DEG C, the temperature difference is very
Greatly, so gasification is rapid, can be achieved to be gasified totally in several seconds.Test result is shown：Injecting time 122s, effective jet length
130min is reached, is gone out with current air suction type foam from 8~9m, coefficient of foaming 6.9, foaming properties stabilization, foam stabilization time
Firearm is compared, and is the advantages of the fire extinguisher：Jet length is remote, course of injection is stable, and froth bed is stable.
Embodiment two：
Foam annihilator in the embodiment and the foam annihilator in above-described embodiment one are essentially identical, unlike,
Relation between the diameter D2 of foam mixing liquid entrance and the diameter D3 of liquid nitrogen entrance is：D2/D3=7；The diameter of tubular structure
Relation between D1 and the diameter D2 of foam mixing liquid entrance is：D1/D2=1.6.The test put out a fire using the fire extinguisher
As a result show：Injecting time 116s, the actual coefficient of foaming 7.2 measured, foaming properties are stable.
Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing
In this.In range of the technology design of the present 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 should equally be considered as the utility model institute
Disclosure, belong to the scope of protection of the utility model.
Claims (13)
1. a kind of foam-generating device, it is characterised in that the foam-generating device includes foam producer (1), the foam
Generator (1) is provided with the foam production with foam mixing liquid entrance (11), liquefied medium entrance (12) and foam outlet (13)
Raw chamber, the foam mixing liquid entrance (11) are connected with the foams mix for producing chamber conveying foam mixing liquid to the foam
Liquid storage device (2), the liquefied medium entrance (12) are connected with the liquid for producing chamber transportation of liquefied medium to the foam
Change medium storage device (3), the liquefied medium can produce intracavitary mixing gasifying with the foam mixing liquid in the foam
And foam, to export the foam for fire extinguishing from the foam outlet (13).
2. foam-generating device according to claim 1, it is characterised in that the foam producer (1) and the foam
Between mixed liquor storage device (2) control is provided between the foam producer (1) and the liquefied medium storage device (3)
Valve (4) processed.
3. foam-generating device according to claim 2, it is characterised in that it is single that the foam-generating device also includes control
First (5), described control unit (5) control the control valve (4).
4. the foam-generating device according to any one in claims 1 to 3, it is characterised in that the foam producer
(1) it is tubular structure, one end of the tubular structure is provided with least one foam mixing liquid entrance (11), the tubular
The other end of structure is provided with least one foam outlet (13), the liquefied medium entrance (12) and the foams mix
Liquid entrance (11) is angled to be set.
5. foam-generating device according to claim 4, it is characterised 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, it is characterised 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
Being capable of rotational flow.
7. foam-generating device according to claim 4, it is characterised in that the liquefied medium entrance (12), which is provided with, stretches
The input pipe (16) of intracavitary is produced to the foam.
8. foam-generating device according to claim 4, it is characterised 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 relation 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 liquefied medium entrance (12) diameter D3 between relation be：D2/D3=4~10；The tubular structure
Diameter D1 and the foam outlet (13) diameter D4 between relation be：D1/D4=0.8~2.
9. the foam-generating device according to any one in claims 1 to 3, it is characterised in that the foam produces chamber
Inside it is provided with least one flow spoiler (14) for disturbing liquid stream.
10. foam-generating device according to claim 9, it is characterised 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 to institute
State foam mixing liquid entrance (11).
11. foam-generating device according to claim 9, it is characterised in that the cross section of the flow spoiler (14) is circle
Shape structure, the relation between the diameter D7 of the flow spoiler (14) and the diameter D2 of the foam mixing liquid entrance (11) are：D7/
D2=1~4；And/or
The top of the flow spoiler (14) is with liquefied medium in the distance between the flow export at liquefied medium entrance (12) place L
For 0~100mm.
12. foam-generating device according to claim 9, it is characterised in that the foam produces intracavitary and is provided with least
One spaced loose structure (15)；Multiple holes are provided with each loose structure (15)；The loose structure
(15) hole is towards the foam mixing liquid entrance (11), and the top of the relatively described flow spoiler (14) of the loose structure (15)
Away from the foam mixing liquid entrance (11).
13. a kind of fire extinguisher, it is characterised in that the fire extinguisher is provided with according to any one in claim 1~12
Foam-generating device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2017101177074 | 2017-03-01 | ||
| CN2017101198600 | 2017-03-01 | ||
| CN201710117707 | 2017-03-01 | ||
| CN201710119860 | 2017-03-01 |
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| CN207186962U true CN207186962U (en) | 2018-04-06 |
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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 |
| CN201720948804.3U Active CN207785707U (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 |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| CN201720950354.1U Active CN207186962U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
| 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 |
| CN201710645701.4A Pending CN108525164A (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| 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 |
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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 |
| CN201720948804.3U Active CN207785707U (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 |
| CN201710645620.4A Pending CN108525163A (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and fire extinguisher |
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| CN201720950419.2U Active CN207186963U (en) | 2017-03-01 | 2017-08-01 | Foam-generating device and foam fire-fighting equipment |
| CN201720948770.8U Active CN207822315U (en) | 2017-03-01 | 2017-08-01 | Foam generation module and foam fire-fighting equipment |
| CN201710645701.4A Pending CN108525164A (en) | 2017-03-01 | 2017-08-01 | A kind of foam-generating device using liquefied medium |
| CN201720948766.1U Active CN207822314U (en) | 2017-03-01 | 2017-08-01 | A kind of big flow foam-generating device and foam fire-fighting equipment |
| 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 |
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- 2017-08-01 CN CN201710645548.5A patent/CN108525162B/en active Active
- 2017-08-01 CN CN201710645441.0A patent/CN108525160A/en active Pending
- 2017-08-01 CN CN201720948804.3U patent/CN207785707U/en active Active
- 2017-08-01 CN CN201710645358.3A patent/CN108525159A/en active Pending
- 2017-08-01 CN CN201710645620.4A patent/CN108525163A/en active Pending
- 2017-08-01 CN CN201720950354.1U patent/CN207186962U/en active Active
- 2017-08-01 CN CN201720950419.2U patent/CN207186963U/en active Active
- 2017-08-01 CN CN201720948770.8U patent/CN207822315U/en active Active
- 2017-08-01 CN CN201710645701.4A patent/CN108525164A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108525161A (en) | 2018-09-14 |
| CN207822315U (en) | 2018-09-07 |
| CN207822314U (en) | 2018-09-07 |
| CN108525166B (en) | 2021-04-23 |
| CN108525166A (en) | 2018-09-14 |
| CN108525162B (en) | 2021-10-15 |
| CN207785707U (en) | 2018-08-31 |
| CN207186963U (en) | 2018-04-06 |
| CN108525159A (en) | 2018-09-14 |
| CN108525160A (en) | 2018-09-14 |
| CN108525163A (en) | 2018-09-14 |
| CN108525162A (en) | 2018-09-14 |
| CN108525164A (en) | 2018-09-14 |
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