CN207445395U

CN207445395U - A kind of foam-generating device using chemical reaction

Info

Publication number: CN207445395U
Application number: CN201720948857.5U
Authority: CN
Inventors: 牟小冬; 郎需庆; 尚祖政; 牟善军; 姜春明; 吴京峰; 谈龙妹; 于辉; 王林; 陶彬; 刘全桢
Original assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Current assignee: China Petroleum and Chemical Corp; Sinopec Safety Engineering Research Institute Co Ltd
Priority date: 2017-03-01
Filing date: 2017-08-01
Publication date: 2018-06-05
Anticipated expiration: 2027-08-01
Also published as: CN108525165A; CN108525167A

Abstract

The utility model discloses a kind of foam-generating device using chemical reaction, the foam-generating device includes：For generating the aerogenesis apparatus of gas under external force by gas source；For providing the foaming substance feedway of foaming substance；And Liqiud-gas mixing device, Liqiud-gas mixing device have mixing chamber, the wall surface of mixing chamber is equipped with gas feed, foaming substance import and foam outlet.The foam-generating device has many advantages, such as that simple in structure, manufacture is at low cost, occupies little space, convenient for site layout project, it can be applied to the fire attack of general scale, such as building fire, ground small range trickling fire, and can be applied to putting out a fire to save life and property for large-scale storage tank fire or large-scale ground spill fire.It being capable of suitable gas source by selecting, enabling generate the inert gases such as nitrogen and participate in frostproof froth n, these inert gases are released after lather collapse, are played the role of inhibiting burning on combustible substance surface, are helped speed up putting out for fire.

Description

A kind of foam-generating device using chemical reaction

Technical field

The utility model is related to foam-generating devices.

Background technology

Existing compressed air foam fire extinguishing is main in a manner that gases at high pressure mix generation foam with foam mixing liquid It puts out a fire.Specific foam fire-fighting mode mainly has the fire extinguishing of type voltage regulation compressed air foam and two kinds of sides of air storing type foam fire-fighting Formula.Wherein, the mode of compressed air foam fire extinguishing generally use gas compressor, gases at high pressure pipe network or compressed gas cylinder into Row supply, and gas compressor and compressed gas cylinder air demand are limited, can not meet big flow, high pressure, supply for a long time Requirement, and most place does not have gases at high pressure pipe network.And if it need to realize that big flow, high pressure, long-time supply, and need Set multiple compressors or compressed gas cylinder (such as by taking the foam truck of a flow 150L/S as an example, the supply stream of gas Amount is at least 1050L/s, and supply is needed by more large-scale air compressor machine supply), occupied space is big, in oil depot tank field, device Area does not often possess the space of arrangement, is unfavorable for site layout project.

Another air storing type foam fire-fighting is usually in foamite container memory storage compressed gas, when big flow is sprayed, pressure Contracting gas will be consumed largely, at this time to ensure the high-pressure injection of extinguishing chemical, then need to supplement compressed gas into foamite container in time Body, and under big flow spray regime, it can not only ensure enough benefits of compressed gas at all by air compressor machine and compressed gas cylinder It fills, leads to not effectively realize high-pressure injection requirement, carried out as injection is lasting, the pressure in container significantly reduces, spumescence It can progressively be deteriorated, influence extinguishing effect.When carrying out fire disaster fire extinguishing, then need to produce big flow high-foaming fire-extinquishing, this When foams mix flow quantity improve, the air demand of compressed gas also needs to increase therewith, and existing gas supply mode can not be real The supply of existing big-flow high-pressure compressed gas, the maximum foam mixing flow quantity only 15 of current compression gas bubble fire fighting truck~ 20L/s is mainly used in the fire attack of general scale, such as building fire, ground small range trickling fire at present, can not Application in large-scale storage tank fire or large-scale ground spill fire.

Utility model content

The purpose of this utility model is to overcome existing gases at high pressure supply technology there are the defects of, provide a kind of new The system for generating foam, the foam-generating device can obtain larger amount of foam by smaller equipment, and by the party When method is used for extinguishment fire suppression, there is higher fire-fighting efficiency.

To achieve these goals, the utility model provides a kind of foam-generating device, and the foam-generating device includes： For generating the aerogenesis apparatus of gas under external force by gas generating material, the aerogenesis apparatus has gas vent；For carrying For the foaming substance feedway of foaming substance, the foaming substance feedway is exported with foaming substance；And gas-liquid mixed Device, the Liqiud-gas mixing device have the mixing chamber for mixing the gas and the foaming substance, the mixing chamber Wall surface be equipped with to input the gas feed of gas, be steeped for the foaming substance import that inputs foaming substance and for exporting The foam outlet of foam, wherein the gas feed is connected with the gas vent, the foaming substance import and the foamed Matter outlet.

Preferably, the foaming substance feedway includes：Foam dope tank, the foam dope tank have foam dope Outlet；Water supply installation, the water outlet of the water supply installation；With stoste mixing arrangement, the stoste mixing arrangement has foam original Liquid import, water inlet and foaming substance outlet, wherein the foam dope import and the foam dope outlet, institute Water inlet is stated to connect with the water outlet.

Preferably, the foam-generating device further comprises：First pipeline and the second pipeline, the of first pipeline The outlet of one end and the foam dope is connected, and the second end of first pipeline is connected with the foam dope import, and described the The first end of two pipelines is connected with the water outlet, and the second end of second pipeline is connected with the water inlet；3rd pipeline With the 4th pipeline, the first end of the 3rd pipeline is connected with foaming substance outlet, the second end of the 3rd pipeline and The foaming substance import is connected, and the first end of the 4th pipeline is connected with the gas vent, and the of the 4th pipeline Two ends are connected with the gas feed；First flow adjuster and second flow adjuster, the first flow adjuster are located at On first pipeline, the second flow adjuster is located on second pipeline；3rd flow regulator and the 4th flow Adjuster, the 3rd flow regulator are located on the 3rd pipeline, and the 4th flow regulator is located at the 4th pipe On the road；And controller, the controller are connected to control the bubble in first pipeline with the first flow adjuster The flow of foam stoste, the controller are connected the stream for controlling the water in second pipeline with the second flow adjuster Amount, the controller are connected the flow for controlling the foaming substance in the 3rd pipeline with the 3rd flow regulator, The controller is connected the flow for controlling the gas in the 4th pipeline with the 4th flow regulator.

Preferably, each in the first flow adjuster to the 4th flow regulator includes flowmeter and stream Control valve, each in the flowmeter and the flow control valve are located at first pipeline into the 4th pipeline Corresponding one on, the controller is connected with each in the flowmeter and the flow control valve so as to according to institute The detected value for stating flowmeter controls the aperture of the flow control valve.

Preferably, the foam-generating device further comprises foam output device, and the foam output device has bubble Foam import and bubble jet mouth, the foam inlet are connected with the foam outlet, the foam inlet and the foam jet Mouth connection.

Preferably, the foam output device includes the water tower fire truck with telescopic arm and the conveying of flexible foam Pipe, the first port of the foam pipeline is the foam inlet, and the second port of the foam pipeline is foam jet Mouthful, the part of the neighbouring second port of the foam pipeline is located on the telescopic arm；Or the foam output dress It puts including fire-fighting robot and flexible foam pipeline, the fire-fighting robot has the foam inlet and the bubble jet Loophole, the first end of the foam pipeline are connected with the foam outlet, the second end of the foam pipeline and the bubble Foam import is connected；Or the foam output device includes foam pipeline and the foam jet pipe of annular, the foam jet Pipe is suitable for setting around for storing the storage tank of combustible, and the foam jet pipe is equipped with the circumferential direction along the foam jet pipe Multiple bubble jet mouths spaced apart, the first end of the foam pipeline are connected with the foam outlet, the foam The second end of delivery pipe is connected with the foam jet pipe.

Preferably, the foam-generating device further comprises air accumulator, and the air accumulator has inlet and outlet, described The import of air accumulator is connected with the gas vent, and the outlet of the air accumulator is connected with the gas feed.

Preferably, the foaming substance import is located at the first end of the mixing chamber, and the foam outlet is located at described mixed The second end of chamber is closed, wherein the gas feed is multiple, multiple gas feeds are set around the foaming substance import, Each gas feed is connected with the gas vent, and each gas feed is at an angle of with the foaming substance import to be set It puts.

Preferably, the relation between the diameter D1 of the mixing chamber and the diameter D2 of the foaming substance import is：D1= (1.1-4) D2 preferred D1=(1.4-2) D2；Between the diameter D2 of the foaming substance import and the diameter D3 of the gas feed Relation be：D2=(2-6) D3；Relation between the diameter D1 of the mixing chamber and the diameter D4 of the foam outlet is：D1 =(0.8-2) D4 preferred D1=(0.8-1.2) D4.Above-mentioned relation is met by the diameter for controlling each opening, without additional control Aforementioned flow relation can be realized in device processed, so that foaming is more abundant, so as to the foam quality higher obtained.

Preferably, be provided with flow spoiler in the mixing chamber, the flow spoiler be 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 Facing towards the foaming substance import, wherein the cross section of the flow spoiler is circular configuration, the diameter D7 of the flow spoiler with Relation between the diameter D2 of the foaming substance import is：D7=(1-4) D2 preferred D7=(1-1.6) D2；It is and/or described The distance between the top of flow spoiler and the gas feed L are 0-100mm.Under the preferred embodiment, mixed material being capable of shape Into turbulent flow, so that gas-liquid mixed is more abundant, the higher foam of quality is obtained.

The aerogenesis apparatus is one or more, and preferably described aerogenesis apparatus is by gas generating material passing through under external force Generated reactive gas is learned, the further preferred aerogenesis apparatus is independently each sodium azide decomposition reaction gas making device or nitre Sour ammonium decomposition reaction gas making device.

According to gas generating material can be placed in the aerogenesis apparatus of the foam-generating device of the utility model embodiment, the aerogenesis Substance can generate gas by chemically reacting under external force, wherein the volume of the gas generated by the gas generating material is with being somebody's turn to do The ratio of the volume of gas generating material is not less than 40.External force effect can be various real without special process or complex appts ability Existing mode includes but not limited to impact force effect, heating, pressure differential, chemically reacts and at least one of light.

The gas volume and the volume ratio of the gas generating material generated due to the gas generating material is higher, so as to drop significantly The low volume of a container for storing the gas generating material, you can to greatly reduce the volume of aerogenesis apparatus, the aerogenesis apparatus of small size It can replace huge air compressor or air compressor unit.

Foam-generating device provided by the utility model avoids the technology path of large air compressor unit supply, also avoids The liquefied mediums such as liquid nitrogen carry out the route of a large amount of compressed gas of exchanging air metaplasia production by large-scale gasification installation, but utilize aerogenesis Device is realized generates gas by the gas generating material, and realizes that the gas is carried with foaming substance feedway using Liqiud-gas mixing device The foaming substance mixing of confession, so as in large quantities, constantly generate and disclosure satisfy that the foam of fire extinguishing demand.

Multiple air compressors, multiple compressed gas steel need not be set according to the foam-generating device of the utility model embodiment Bottle, it is possible to realize in large quantities, constantly generate and disclosure satisfy that the foam of fire extinguishing demand.Therefore, implemented according to the utility model The foam-generating device of example has many advantages, such as that simple in structure, manufacture is at low cost, occupies little space, convenient for site layout project, can not only Enough it is applied to the fire attack of general scale, such as building fire, ground small range trickling fire, and can be applied to large size Storage tank fire or large-scale ground spill fire are puted out a fire to save life and property.

Description of the drawings

Fig. 1 is the structure diagram according to the foam-generating device of the utility model embodiment；

Fig. 2 is the structure diagram according to the Liqiud-gas mixing device of the foam-generating device of the utility model embodiment；

Fig. 3 is the structure diagram of the flow spoiler of pyramidal structure；

Fig. 4 is the structure diagram of the flow spoiler of hemispherical dome structure；

Fig. 5 is the structure diagram of the flow spoiler of platform structure.

Specific embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality The limitation of type.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify description rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model System.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two It is a, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be Mechanical connection or electrical connection can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through Even, can be the interaction relationship of connection inside two elements or two elements, unless otherwise restricted clearly.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features contact directly or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with It is fisrt feature immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It combines in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the different embodiments described in this specification or example and different embodiments or exemplary feature into Row combines and combination.

Below with reference to the accompanying drawings foam-generating device 100 according to the utility model embodiment is described.As shown in Figure 1, according to The foam-generating device 100 of the utility model embodiment includes the aerogenesis for generating gas under external force by gas generating material Device 3, for providing the foaming substance feedway 4 of foaming substance and Liqiud-gas mixing device 1.

Aerogenesis apparatus 3 has one or more gas vents, and foaming substance feedway 4 is exported with foaming substance.Gas Liquid mixing arrangement 1 has the mixing chamber for mixing gas and foaming substance, and the wall surface of the mixing chamber is equipped with gas feed 12nd, foaming substance import 11 and foam outlet 13.Wherein, gas feed 12 is connected with the gas vent so that aerogenesis apparatus 3 carries The gas of confession is entered by gas feed 12 in the mixing chamber, and foaming substance import 11 is with the foaming substance outlet to send out The foaming substance that bubble material feeding device 4 provides is entered by foaming substance import 11 in the mixing chamber.

It, should according to gas generating material can be placed in the aerogenesis apparatus 3 of the foam-generating device 100 of the utility model embodiment Gas generating material can generate gas by chemically reacting under external force, wherein the volume of the gas generated by the gas generating material It is not less than 40 with the ratio of the volume of the gas generating material.External force effect can be it is various without special process or complex appts The mode that can be realized includes but not limited to impact force effect, heating, pressure differential, chemically reacts and at least one of light.

The gas volume and the volume ratio of the gas generating material generated due to the gas generating material is higher, so as to drop significantly The low volume of a container for storing the gas generating material, you can to greatly reduce the volume of aerogenesis apparatus 3, the aerogenesis apparatus of small size 3 can replace huge air compressor or air compressor unit.

Foam-generating device 100 provided by the utility model avoids the technology path of large air compressor unit supply, also keeps away It has opened the liquefied mediums such as liquid nitrogen and the route of a large amount of compressed gas of exchanging air metaplasia production is carried out by large-scale gasification installation, but utilized Aerogenesis apparatus 3 is realized generates gas by the gas generating material, and realizes that the gas is supplied with foaming substance using Liqiud-gas mixing device 1 The foaming substance mixing that device 4 provides, so as in large quantities, constantly generate and disclosure satisfy that the foam of fire extinguishing demand.

Multiple air compressors, multiple compressed gas need not be set according to the foam-generating device 100 of the utility model embodiment Steel cylinder, it is possible to realize in large quantities, constantly generate and disclosure satisfy that the foam of fire extinguishing demand.Therefore, it is real according to the utility model Applying the foam-generating device 100 of example has many advantages, such as that simple in structure, manufacture is at low cost, occupies little space, convenient for site layout project, no The fire attack of general scale, such as building fire, ground small range trickling fire are can be only applied to, and can be applied to Large-scale storage tank fire or large-scale ground spill fire are puted out a fire to save life and property.

As Figure 1-Figure 5, in some embodiments of the utility model, foam-generating device 100 can include being used for Immediately the aerogenesis apparatus 3 of the gas generated to Liqiud-gas mixing device 1 can be provided, supplied for providing the foaming substance of foaming substance To device 4 and Liqiud-gas mixing device 1.Preferably, the accounting of the foaming substance in Liqiud-gas mixing device 1 and gas is 1:5~8.

The aerogenesis apparatus 3 is chemical aerogenesis apparatus immediately, i.e., passes through chemical reaction under external force by gas generating material Generate gas device, be preferably sodium azide decomposition reaction gas making device or decomposing ammonium nitrate reaction gas making device, for Liqiud-gas mixing device 1 provides the gas generated immediately.Sodium azide (NaN₃) decomposition reaction gas making device can decompose rapidly Reaction generates a large amount of nitrogen (N₂) meet the big flow gas confession that big flow high magnification numbe chemically reacts the foam-generating device of supply To demand.Ammonium nitrate (NH₄NO₃) reaction that can decompose rapidly of decomposition reaction gas making device generates a large amount of nitrous oxide (N₂O) Meet the big flow gas demand and supply of the foam-generating device of big flow high magnification numbe chemical reaction supply.Immediately chemical reaction system Device of air further includes gas treatment equipment, which can be filtered gas purified treatment, increases gas-liquid mixed The stability of ratio and the stability of foam output.

The utility model replaces large-scale mobile in the prior art using the instant chemical reaction gas making device of production gas Air compressor machine and steel cylinder are supplied to Liqiud-gas mixing device, are conducive to fire-extinguishing location arrangement, due to chemically reacting gas making device energy immediately Enough inert gases for generating big flow in a short period of time are mixed with the foam mixing liquid of big flow so that chemical reaction supply Foam-generating device 100 foam output of big flow high magnification numbe can be provided in extensive fire of putting out a fire to save life and property.Above-mentioned foam generates dress 100 technology paths for avoiding large air compressor unit supply are put, the liquefied mediums such as liquid nitrogen is also avoided and passes through large-scale gasification installation The route that exchanging air metaplasia produces a large amount of compressed gas is carried out, but is realized using aerogenesis apparatus 3 and gas is generated by the gas generating material, And realize that the gas is mixed with the foaming substance that foaming substance feedway 4 provides using Liqiud-gas mixing device 1, so as to a large amount of Ground constantly generates the foam that disclosure satisfy that fire extinguishing demand.

It can place in large quantities, constantly to generate the gas generating material of gas under external force in aerogenesis apparatus 3.It is excellent Selection of land, the gas generating material can be chemical gas generating materials.It is highly preferred that the gas generating material can be sodium azide, ammonium nitrate, nitre At least one of cellulose, heisuojin class gas generant composition in accordance and nitrofuanidine gas generant composition in accordance.

Such mode cleverly uses for reference the mode of safe automobile air bag aerogenesis, therefore specific operation and condition are referred to The technology.Since the gas generating material is generally solid, the volume of the gas generating material can be substantially reduced.It specifically for example can be with With reference to CN 1903805A, CN 101077846A, CN 101205159A etc..

The nitrocellulose is also known as nitrocellulose, i.e. the hydroxyl of cellulose occurs esterification with nitric acid and obtains Product.The nitrogen content of nitrocellulose in the gas generating material of the utility model is preferably 10-14.1 weight %.Nitrocellulose Element be commercially available or by known method by cellulose (such as cotton fiber or wood pulp) and nitric acid the concentrated sulfuric acid catalysis Effect is lower to be carried out esterification and is made.

In order to improve the factor of created gase of nitrocellulose, preferably coordinate to obtain gas generating material composition with stabilization agent.With 100 weights On the basis of the nitrocellulose for measuring part, the content of stabilization agent can be 0.1-20 parts by weight, be preferably 0.2-15 parts by weight, more excellent Elect 0.5-10 parts by weight as.

The stabilization agent is preferably amine and/or urea.The amine can be the existing various preservations that can extend gas generating material The amine of time, the example of preferred amine include but not limited to one or more of aniline, ketoamine, aldehyde amine, quinoline；The urea can Think the urea of the existing various holding times that can extend gas generating material, the example of preferred urea includes but not limited to diethyl two Phenylurea and dimethyl acardite.The aniline can be diphenylamines, and ketoamine can be acetone diamines, and aldehyde amine can be hexichol first Aldehyde amine, quinoline can be phenyl-α-naphthylamine.

Above-mentioned gas generating material can also contain nitroguanidine.On the basis of the nitrocellulose of 100 parts by weight, nitroguanidine contains Amount can be 0-80 parts by weight, be preferably 2-80 parts by weight, more preferably 5-60 parts by weight.Nitro is added in gas generating material Guanidine can improve the thermal stability of gas generating material, and at the same time caused by the gas generating material containing nitroguanidine and nitrocellulose The temperature of gas generating material generation gas of the temperature of gas than being free of nitroguanidine is low, so after filter filters just completely not Have the danger burnt relieving stagnant Qi bag or scald passenger.

As needed, the gas generating material of the utility model can also be containing in cosolvent, plasticizer and combustion catalyst It is one or more of.

The cosolvent can be to contribute in the preparation process of the gas generating material by nitrocellulose and stabilization agent The substance of dissolving in a solvent is preferably one or more of dinitrotoluene (DNT), camphor, nitrobenzene.With the nitre of 100 parts by weight On the basis of cellulose, the content of cosolvent can be 0-20 parts by weight, be preferably 0.1-15 parts by weight, more preferably 0.3-10 Parts by weight.

In order to improve the factor of created gase of sodium azide, preferably with auxiliary agent, the nitrate of alkali metal, metal sulfide and/or gold Belong to oxide to be used cooperatively.On the basis of the total weight of chemical gas generating material, the content of the sodium azide is 45-60 weights The content of amount %, metal sulfide and/or metal oxide is 35-50 weight %, and the content of the nitrate of alkali metal is 1.5-5 Weight %, the content of auxiliary agent is 0.5-6 weight %.

The auxiliary agent is preferably using one or more of molybdenum disulfide, alundum (Al2O3) and magnesium trisilicate；More preferably adopt With magnesium trisilicate or magnesium trisilicate and a kind of combination in other two kinds；More preferably simultaneously using three kinds；The molybdenum disulfide, three Al 2 O, the weight ratio of magnesium trisilicate are 1:0.1-3:0.1-3.Since molybdenum disulfide, alundum (Al2O3) and magnesium trisilicate do not have It is corrosive and very smooth and loose so that the good fluidity for the gas generating material being mixed to prepare, it is easily molded；And alundum (Al2O3) It can also play the role of slag making so that gas generating material is easy to form loose big residue after combustion, and magnesium trisilicate can also Residue is enough made to become loose so as to be easier to absorb Mars so that residue is not easy to spray.

The metal sulfide one or more of I B, II B, VIII B races metal sulfide in the periodic table of elements, such as One or more of ferrous sulfide, zinc sulphide, copper sulfide, it is preferred to use ferrous sulfide.

The metal oxide one or more of I B, II B, VIII B family metal oxides in the periodic table of elements, such as One or more of copper oxide, zinc oxide, di-iron trioxide；It is preferred that using di-iron trioxide and/or zinc oxide.

Due to metal sulfide than metal oxide be easier and reaction of sodium azide so that the chemistry of gas generating material Reaction is easier to make for, and reaction is more abundant, it is therefore preferable that using metal sulfide.

The nitrate of the alkali metal releases oxygen, the nitrate of the alkali metal is selected from nitre in the reaction as oxidant One or more of sour potassium, sodium nitrate, lithium nitrate, it is preferred to use potassium nitrate and/or sodium nitrate.

The dosage of the gas generating material is determined by the gas production and coefficient of foaming of gas generating material, it is preferable that

The foaming substance is foam mixing liquid, and the gas generating material and the dosage of the foaming substance meet following passes System：M=ρ f (m+2) V/1000n,

Wherein, M is the quality of the gas generating material needed for the unit time, and unit kg/min, ρ are the gas generating material Density, unit kg/m³, m is the coefficient of foaming of setting, and V is the volume flow of the foam mixing liquid, unit L/min, n It is ratio of the volume with the volume of gas generating material in itself for the gas that gas generating material can generate, f is correction factor, and value is in 1- In the range of 1.4.Wherein n can be according to the standard body accumulated amount for the gas that the chemical gas generant composition in accordance of Unit Weight can obtain and aerogenesis object The density conversion of matter obtains.The standard body accumulated amount for the gas that the chemical gas generant composition in accordance of Unit Weight can obtain is according to standard ISO 12097-3(2002)《Road vehicle airbag unit third portion-inflator assembly experiment》It obtains.Wherein foamed The volume flow V of matter according to fire area by《Froth fire extinguishing system design specification》(GB50151-2010) determine.

Since the utility model is mainly by changing the source for the gas of foaming i.e. using by gas generating material Learn reaction (instant) generation gas in situ to realize its purpose of utility model instead of existing air compressor offer gas, therefore There is no particular limitation for species and dosage, the species of foaming substance and mixing condition, hybrid mode for gas, with reference to existing There is technical teaching.

For example, the condition of mixing is not particularly limited, common environment temperature.Preferably, the item of the mixing Part includes mixing temperature for -30 DEG C to 60 DEG C preferably -10 DEG C to 40 DEG C more preferably 0-40 DEG C.That is, the gas and institute Stating foaming substance can mix under conditions of -30 DEG C to 60 DEG C preferably -10 DEG C to 40 DEG C more preferably 0-40 DEG C.Due to gas with Foaming substance mixing forms foam, therefore the time mixed need not be particularly limited to.

As shown in Figure 1, in one embodiment of the utility model, it is former that foaming substance feedway 4 can include foam Flow container 6, water supply installation 5 and stoste mixing arrangement 2.Foam dope tank 6 is exported with foam dope, the water outlet of water supply installation 5. Stoste mixing arrangement 2 has foam dope import 21, water inlet 22 and foaming substance outlet.Wherein, foam dope import 21 with The foam dope outlet enters stoste mixing so as to the foam dope that foam dope tank 6 provides by foam dope import 21 In device 2, water inlet 22 is connected with the water outlet so that the water that water supply installation 5 provides enters stoste mixing dress by water inlet 22 It puts in 2.Preferably, the volume ratio of the foaming substance and water is 1-10：50-300 is more preferably 3-7：80-160.

Wherein, foam dope can be protein foam concentrate, it is fluoro-protein foam concentrate, aqueous foam-forming solution, water base foam liquid, anti- Molten fluoro-protein foam concentrate resists molten aqueous foam-forming solution etc., typically contains the additives such as a variety of surfactants, stabilizer.

Preferably, as shown in Figure 1, foam-generating device 100 further comprises the first pipeline 71, the second pipeline the 72, the 3rd Pipeline 73, the 4th pipeline 74, first flow adjuster 75, second flow adjuster 76, the 3rd flow regulator 77, the 4th flow Adjuster 78 and controller 79.

The outlet of the first end of first pipeline 71 and the foam dope is connected, the second end of the first pipeline 71 and foam dope into Mouth 21 is connected.The first end of second pipeline 72 is connected with the water outlet, and the second end of the second pipeline 72 is connected with water inlet 22.

The outlet of the first end of 3rd pipeline 73 and the foaming substance is connected, the second end of the 3rd pipeline 73 and foaming substance into Mouth 11 is connected.The first end of 4th pipeline 74 is connected with the gas vent, second end and 12 phase of gas feed of the 4th pipeline 74 Even.

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 the 3rd pipeline 73, and the 4th flow regulator 78 is located on the 4th pipeline 74.

Controller 79 is connected the flow for controlling the foam dope in the first pipeline 71 with first flow adjuster 75, control Device 79 processed is connected the flow for controlling the water in the second pipeline 72,79 and the 3rd flow of controller with second flow adjuster 76 Adjuster 77 is connected the flow for controlling the foaming substance in the 3rd pipeline 73, controller 79 and 78 phase of the 4th flow regulator Connect the flow for controlling the gas in the 4th pipeline 74.It is possible thereby to obtain better foaming effect, foam quality is improved.

Preferably, first flow adjuster 75, second flow adjuster 76, the 3rd flow regulator 77 and the 4th flow tune Each in section device 78 can 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, the 3rd 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.

As shown in Figure 1, in some examples of the utility model, foam-generating device 100 may further include foam Output device 8, foam output device 8 have foam inlet and bubble jet mouth, the foam inlet connected with the foam outlet with Just Liqiud-gas mixing device 1 provide foam enter in foam output device 8, the foam inlet connected with the bubble jet mouth with Just foam output device 8 will be on foam jet to target object.By setting foam output device 8, so as to more convenient Ground, exactly will be on foam jet to target object.

In an example of the utility model, foam output device 8 can include the injection that elevates with telescopic arm and disappear Anti- vehicle and flexible foam pipeline 81.The first port of foam pipeline 81 is the foam inlet, the of foam pipeline 81 Two-port netwerk is the bubble jet mouth, and the part of the neighbouring second port of foam pipeline 81 is located on telescopic arm.

By stretching out the telescopic arm, so as to so that the second port more adjacent objects object (example of foam pipeline 81 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 making 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 another example of the utility model, foam output device 8 can include fire-fighting robot and flexible bubble Foam delivery pipe 81.The fire-fighting robot has foam inlet and bubble jet mouth, the first end of foam pipeline 81 and the foam Outlet is connected, and the second end of foam pipeline 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 device 100 including the foam output device 8 can be used for putting out ground trickling fire.

As shown in Figure 1, in another example of the utility model, foam output device 8 can include foam pipeline 81 and annular foam jet pipe 82.Foam jet pipe 82 is suitable for around for storing the storage tank 9 of combustible (such as Large Oil Storage Tank) it sets, i.e., when foam jet pipe 82 is in use state, foam jet pipe 82 is around for storing the storage tank 9 of combustible It sets.In other words, foam jet pipe 82 can be circular or oval.

Foam jet pipe 82 is equipped with circumferentially-spaced multiple bubble jet mouths opened 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 playpipe 82 can be the foam inlet.Foam-generating device 100 including the foam output device 8 can be used for The fire extinguishing of product oil oil depot, medium-sized yard storage tank.

Preferably, pressure-regulating valve can be equipped on the 4th pipeline 74, it is possible thereby to be controlled using the pressure-regulating valve defeated Enter the pressure and flow to the gas in Liqiud-gas mixing device 1, achieve the purpose that constant current constant voltage supplies, so as to avoid that foam is sent out The influence of multiple is steeped, ensure that the foam quality of generation persistently meets fire extinguishing demand.That is, the utility model uses aerogenesis The mode that device 3 and the pressure-regulating valve combine while enough tolerance realization big flow injections are provided, also ensures source of the gas Stabilization, substantially increase the quality of fire foam.

Aerogenesis apparatus 3 can be at least two groups, and multigroup aerogenesis apparatus 3 is arranged side by side, and is connected with the pressure-regulating valve, The gas vent of each aerogenesis apparatus 3 is equipped with switch valve, and in gas production deficiency, aerogenesis apparatus 3 is corresponding by starting in real time Switch valve provide source of the gas.The utility model produces gas using multiple aerogenesis apparatus 3, and multiple aerogenesis apparatus 3 can be according to fire The aerogenesis apparatus 3 for starting respective numbers in real time is needed to carry out operation, further ensures the demand of big flow supply, realizes big stream The lasting supply of amount；Meanwhile when an aerogenesis apparatus 3 can not work normally wherein, it can still ensure to continue supply, equipment dependability Height, equipment replacement are convenient.

In the present embodiment, which is pressure reducing valve, is inputted in gas to Liqiud-gas mixing device 1, pressure reducing valve tune The output pressure and flow of throttle body, the preset pressure value of the pressure-regulating valve are generally 0.8-1.2MPa.Foaming substance supplies Device 4 can be foaming substance storage tank, and Liqiud-gas mixing device 1 can be arranged in the foaming substance storage tank, compact in design, save Space.

Liqiud-gas mixing device 1 mixes foaming substance with gas, forms foam.In foaming substance feedway 4 Foaming substance exports and the gas vent of aerogenesis apparatus 3 is provided with flowmeter, and flowmeter measures the flow and gas of foaming substance Flow, control device can control the pressure-regulating valve according to flow feedback situation so that the hair into Liqiud-gas mixing device 1 The accounting for steeping the flow of substance and the flow of gas reaches preset standard.In other embodiments, setting can also be passed through The foaming substance outlet of foaming substance feedway 4 and the caliber size adjustment flow of the gas vent of aerogenesis apparatus 3.

Foam-generating device 100 can also include air accumulator (not shown), which has inlet and outlet, should The import of air accumulator is connected with the gas vent, and the outlet of the air accumulator is connected with gas feed 12.The air accumulator for store, Stablize conveying gas, can ensure that into Liqiud-gas mixing device 1 injection big-flow high-pressure gas, and with foaming substance Forced Mixing. The air accumulator can be between aerogenesis apparatus 3 and the pressure-regulating valve.

Preferably, filter device is also provided between aerogenesis apparatus 3 and the air accumulator, to be generated to aerogenesis apparatus 3 Gas be filtered.

In the utility model, the operating pressure of the air accumulator and foaming substance feedway 4 is more than 0.8MPa.This work Gas and the abundant Forced Mixing of foam mixing liquid are can ensure that as pressure limit.Preferably, the air accumulator and foaming substance supply dress The operating pressure for putting 4 is 0.8MPa-1.2MPa.

In the utility model, the mixing can mix in various can realize and make the device of foaming substance frothing function Middle progress.

As Figure 2-Figure 5, Liqiud-gas mixing device 1 has mixing chamber, which has to input foaming substance Foaming substance import 11, multiple gas feeds 12 for inputting gas and the foam outlet 13 for foam output.Wherein, In the mixing chamber, gas is mixed and gasified with foaming substance, with the foam from the output of foam outlet 13 for fire extinguishing.

Flowmeter, pressure gauge and control valve can be set at each mouthful come control foaming substance import 11 and gas into The flow proportional of mouth 12.

As shown in Fig. 2, Liqiud-gas mixing device 1 is tubular structure, one end of the tubular structure is provided at least one foaming Matter inlet 11, the other end of tubular structure are provided at least one foam outlet 13, each gas feed 12 and foaming substance Import 11 is angled to be set so that the gas and the foaming substance are while the mixing chamber is inputted, also with certain intersection Flowing, the mixed effect that turbulent flow can be generated and had.

Preferably, there are one foaming substance import 11 is set, gas feed 12 is provided with more around foaming substance import 11 A, the angle between the direction of each gas feed 12 and the direction of foaming substance import 11 is 0 ° -90 °, more preferably 30 ° - 60°。

In the case where foaming substance import 11 and foam outlet 13 are each provided with one, diameter D1 and the hair of the mixing chamber Steep matter inlet 11 diameter D2 between relation be：D1=(1-4) D2 preferred D1=(1.4-2) D2；The diameter of the mixing chamber Relation between D1 and the diameter D4 of foam outlet 13 is：D1=(0.8-2) D4 preferred D1=(0.8-1.2) D4.

Above-mentioned relation is met by the diameter for controlling each opening, aforementioned flow, which can be realized, without additional control device closes System, so that foaming is more abundant, so as to the foam quality higher obtained.

It will be appreciated by persons skilled in the art that foaming substance import 11, gas feed 12 and foam outlet 13 are not It is limited to set as described above, it, can be to foaming substance import 11, gas feed 12 and foam to reach better mixed effect Various changes or deformation are made in the setting of outlet 13.

For example, in other embodiment, foaming substance import 11 can set one, and gas feed 12 surrounds foamed Matter import 11 is provided with multiple, and the direction of multiple gas feeds 12 deviates from radial direction successively in the horizontal so that gas The gas stream that import 12 enters being capable of rotational flow.Wherein, side of the tubular structure of Liqiud-gas mixing device 1 from one end to the other end It is the transverse direction with longitudinally perpendicular direction to for longitudinal direction.

In addition, foam outlet 13 may also set up it is multiple, for connecting injection line respectively, so as to passing through a gas-liquid mixed Device 1 is sprayed to multiple directions.

Preferably to control the flow direction of the gas entered from gas feed 12, gas feed 12, which can be set, stretches to the mixing chamber Interior input pipe 16 (as shown in Figure 2).

In addition, in present embodiment, it is provided with to disturb at least the one of liquid stream in the mixing chamber of Liqiud-gas mixing device 1 A flow spoiler 14.

Wherein, flow spoiler 14 is formed as pyramidal structure (such as Fig. 3), hemispherical dome structure (such as Fig. 4), platform structure (as schemed Or the structure of other irregular shapes 5).The taper top of the pyramidal structure, the dome or described of the hemispherical dome structure The deck roof of platform structure is facing towards foaming substance import 11.

Preferably, the cross section of flow spoiler 14 is circular configuration, the diameter D7 of flow spoiler 14 and foaming substance import 11 Relation between diameter D2 is：D7=(1-4) D2D7=(1-1.6) D2.The top of flow spoiler 14 is with gas in gas feed 12 The distance between the outflux at place L is 0-100mm.Under the preferred embodiment, mixed material can form turbulent flow, so that gas-liquid Mixing is more abundant, obtains the higher foam of quality.

The mounting portion 141 being fixed in mixing chamber can be set on flow spoiler 14.Such as the taper flow spoiler shown in Fig. 2 14, which is installed as taper top towards foaming substance import 11, and the liquid stream for being mixed with the foaming substance of gas is rushed at and disturbed Device 14 is flowed, liquid stream can be smashed so that flow disturbance, so as to which gas and foaming substance are sufficiently mixed, to obtain uniform in foaming, performance Good foam.

Certainly, 14 set-up mode of flow spoiler is also not necessarily limited to, as described above, for example, multiple flow spoilers can be set, be distributed in mixed Close the different position of intracavitary, and any type of flow spoiler that can play the role of flow-disturbing to liquid stream.

In present embodiment, be additionally provided in the mixing chamber of Liqiud-gas mixing device 1 at least one spaced orifice plate or The porous structures such as silk screen 15 are provided with multiple holes on each porous structure 15；The hole of porous structure 15 is towards foaming substance import 11, and the top of the opposite flow spoiler 14 of porous structure 15 is away from foaming substance import 11.The liquid stream smashed by flow spoiler 14, from disturbing Porous structure 15 is rushed at around stream device 14, further liquid stream can be disturbed by porous structure 15, it is made further to mix It closes.

In specific application, foaming substance import 11 can connect to hold the appearance of foaming substance foam-generating device 100 Device or connection are used for mix-froth stoste and water to obtain the stoste mixing arrangement 2 of foaming substance.

Liqiud-gas mixing device 1 foam outlet 13 can connection length be more than 40m pipeline, gas and foaming substance are in gas In liquid mixing arrangement 1 after mixing, make it by pipeline of the length more than 40m to jet port, when being flowed in this pipeline, Gas will also carry out fully mixing repeatedly with foaming substance, before ejection, will form stable foam of good performance.

Above-mentioned Liqiud-gas mixing device 1 may be provided on fire-extinguishing apparatus, for example, on fire extinguisher, fire-fighting foams vehicle or high-jetting vehicle. The fire-extinguishing apparatus generates foam by Liqiud-gas mixing device 1, can generate big flow foam, and occupy little space.

The foam-generating device 100 of the utility model can be adapted for the various occasions for needing to generate foam, such as put out a fire, Heat-insulated protection, food production, acoustic material production etc..Specific extinguishment fire suppression can be that the productions such as chemical enterprise, oil depot, refinery are set The fire extinguishing applied disappear and aircraft when airfield runway force-lands runway protection etc..

It is former for foam that the foam-generating device 100 of the utility model is readily applicable to foaming substance after simple deformation The situation of liquid.When using foam dope, it is referred to existing method or following embodiments first mixes foam dope and water It closes, foams again with gas mixing after obtaining foam mixing liquid, it can also be directly by foam dope, water, gas according to required Foaming ratio mixed, foamed.Obvious which is more easy.

A kind of specific embodiment according to the present utility model, when foam-generating device 100 is used for extinguishment fire suppression, foaming As shown in Fig. 2, foaming substance import 11 connects stoste mixing arrangement 2, stoste mixing arrangement 2 has to input foam original mode The foam dope import 21 of liquid and the water inlet 22 for inputting water, foam dope and water respectively from foam dope import 21 and into The mouth of a river 22, which enters in stoste mixing arrangement 2 mixing, can obtain foaming substance, then foaming substance from foaming substance import 11 into Enter into Liqiud-gas mixing device 1.To obtain the foam mixing liquid of suitable concentration, foam dope and water need to be controlled to be mixed to stoste and filled 2 feed flow is put, this can also set the controls such as flowmeter and control valve in foam dope import 21 and water inlet 22.

In present embodiment, it is preferable that the diameter D6 of the water inlet 22 of stoste mixing arrangement 2 and foam dope import 21 Relation between diameter D5 is：D6=(8-14) D5；Between the diameter D6 of water inlet 22 and the diameter D2 of foaming substance import 11 Relation be：D6=(1.0-1.4) D2.

In the utility model, by using gas generating material conventional compressed air is replaced so as to reduce big flow to be needed to steep The volume of required gas device during foam.It is required that the gas that (1) gas generating material can generate rapidly gas and generate can facilitate Ground is mixed with foaming substance generates bubble, preferably from generate gas mixed with foaming substance to gas generation bubble (foam) when Between within 60 seconds within preferably 20 seconds；(2) by gas generating material generate gas volume with gas generating material in itself compared with significantly Increase, volume ratio is not less than 40, and the compression ratio of conventional compressed air is no more than 20, it is possible thereby to obtain same amount of gas In the case of greatly reduce the volume of gas generating material.

In the utility model, the species of gas generating material causes the volume of the gas of generation and the volume of the gas generating material Ratio is not less than 40, is preferably not less than 100, further preferably 200-1500, is still more preferably 500-1000.Pass through control Ratio processed within the above range, can substantially reduce the volume of gas generating material, so as to reduce the volume of foam-generating device.And show The compression ratio for being useful for the compressed air of compressed air foam system is typically less than 20.

In the utility model, the ratio of the volume for the gas that gas generating material can generate and the volume of the gas generating material can To obtain by various modes.For example, the mark for the gas that the ratio can be obtained according to the gas generating material of Unit Weight Quasi- volume is calculated.The standard body accumulated amount for the gas that the chemical gas generating material of wherein Unit Weight can obtain is according to standard ISO 12097-3(2002)《Road vehicle airbag unit third portion-inflator assembly experiment》It obtains.

In the utility model, the gas generating material can various can advantageously generate gas to be mixed with foaming substance Generate the substance of foam.

Obviously, when the foam of generation is used for follow-up particular utility, the gas that gas generating material generates cannot be to subsequent use Have a negative impact.For example, when the foam of generation is for putting out a fire, then the gas that gas generating material generates should contribute to put out a fire , and there cannot be destruction in itself to foam, such as dissolved in some or certain several ingredients in foam solution, with foam Learn reaction, generate gas temperature it is excessively high cause aggravate foam rupture situations such as.

For the supply problem of big flow compressed gas, the utility model avoid large-scale air compressor machine or its unit supply Technology path also avoids the liquid gas such as liquid nitrogen (liquefied medium) and carries out the production of exchanging air metaplasia largely by large-scale gasification installation The route of compressed gas, but use by gas generating material by being mixed after chemical reaction (instant) generation gas in situ with foaming substance It closes so as to the mode of foaming.

That is, when that need not generate foam, which can steadily exist, chemistry does not occur instead It should.When needing to generate foam, just make the gas generating material that chemical reaction occur to generate gas.In other words, for the hair The gas for steeping material mixing is not that the gas generating material is generated and is stored in container in advance, because can so result in the need for setting Multiple containers for being used to store the gas are put, and then cause to be not convenient to use, are also unfavorable for site layout project.

Therefore, gas is generated immediately to refer to：When needing to generate foam, make the gas generating material that chemical reaction occur to produce Angry body.It is possible thereby to save multiple containers for being used to store the gas, consequently facilitating the foam for implementing the utility model generates Method, beneficial to site layout project.

According to the utility model, reduce foam device volume in order to realize, gas is generated beforehand through the external world with existing Body, then the mode that gas is mixed with foaming substance are mutually distinguished, and the utility model does not include generating gas outside foam device in advance Body, then the mode that gas is mixed with foaming substance, thus the utility model control the gas generated by gas generating material after 60 It is preferably more preferably to be mixed in 20 seconds in 10 seconds with foaming substance within second.It can be by controlling gas generating material and mixing arrangement The distance between and/or gas generating material generate gas pressure come realize it is above-mentioned by gas generating material generate gas quickly with foaming Material mixing.

It is existing various modes that gas generating material is allow, which to occur to chemically react the mode for generating gas, is preferably various Without the mode that special process or complex appts can be realized, include but not limited to impact force effect, heating, pressure differential, chemistry It reacts and at least one of lights.

Wherein foam dope is protein foam concentrate, fluoro-protein foam concentrate, aqueous foam-forming solution, water base foam liquid, anti-molten fluorine Protein foam concentrate resists molten aqueous foam-forming solution etc., typically contains the additives such as a variety of surfactants, stabilizer.

Foam mixing liquid is foam dope and the mixed mixed liquor of water, directly with that can generate foam after gas mixing.

Above-mentioned foam dope and foam mixing liquid are available commercially.

In following embodiment, unless otherwise indicated, each raw material is commercially available product.

Preparation example 1

The nitrocotton (nitrogen content is 12 weight %) that water content is 20 weight % in centrifuge is dehydrated, makes its water content No more than 0.15 weight %.

By the nitrocotton of the above-mentioned dehydration of 100 parts by weight, three oxygen of 2 parts by weight diphenylamines, 50 parts by weight nitroguanidines and 7 parts by weight Change two dissolved ferric irons in the in the mixed solvent of 100 parts by weight ether and 100 parts by weight of ethanol, then in kneader at 20 DEG C Mixing plasticizing 60 minutes.

Cylinder is made in said mixture, when drying 8 is small at 30 DEG C, the medicament column of 15kg weights is obtained, is denoted as chemistry Gas generant composition in accordance A1, density 1.2g/cm³, n 600, gas production rate is 125L/s/kg, and it is 1min to continue the aerogenesis time.Aerogenesis speed The test method of rate：500g medicaments are placed on 1m³Babinet in, start medicament, start to react, after the completion of reaction, record is anti- It answers the duration, pressure in test box body, and then calculates the gas volume generated.

Preparation example 2

At 70 DEG C, by sodium azide, sodium nitrate, ferrous sulfide dry in an oven 2 it is small when, be not more than its moisture 0.15%.

It is 58 by weight by the sodium azide of drying and alundum (Al2O3), magnesium trisilicate:0.2:After 0.2 ratio mixing The levigate particle mean size to mixture of ball mill is put into as 15 microns.

It is 3 by weight by the sodium nitrate of drying and alundum (Al2O3), magnesium trisilicate:0.2:It is put after 0.2 ratio mixing Enter the levigate particle mean size to mixture of ball mill for 15 microns.

By ferrous sulfide be put into ball mill it is levigate to particle mean size be 15 microns.

Ferrous sulfide, the mixture of sodium azide, the mixture of sodium nitrate that more than ball milling is obtained are 38 by weight: 58:4 ratio mixing is packed into ball mill grinding.Ball-milling Time for 1 it is small when, it is levigate to particle mean size be 10 microns.Then, 70 DEG C baking oven in be dried to water content no more than 0.2%.

A small amount of alcohol will be added in mixing medicine after drying, medicinal powder wet mixing is agglomerating, and it is put into comminutor granulation.

The medicinal powder of grain will be made, water content is dried in the baking oven for being 70 DEG C in temperature no more than 0.2%.

After powder drying, cylinder is made, when drying 8 is small at 30 DEG C, obtains the medicament column of 18kg weights, is denoted as chemical production Gas medicine A2, density 1.3g/cm³, n 800, gas production rate is 185L/s/kg, and it is 1min to continue the aerogenesis time.Gas production rate Test method it is identical with preparation example 1.

Embodiment 1

For 450m²5000 cubic metres of tank fires, according to《Froth fire extinguishing system design specification》(GB50151- 2010), the foams mix flow quantity of required offer is not lower than 3000L/min, and the supply duration is not less than 2min.According to public affairs Formula M=ρ f (m+2) V/1000n, which is calculated, needs to configure 8, A1 medicaments column, and gas production rate is at least 27000L/min, wherein f =1.4, the coefficient of foaming m=8 of setting.

Using foam-generating device shown in FIG. 1, including 8 chemical reaction gas making device (respective built-in 1 gas production charge columns ) and gas collecting pipe, 1 20m A1³Foam dope tank (stores 15m in it³3% MJPZ purchased from Jiangsu Jiang Ya companies is steeped Foam liquid, operating pressure 0.8MPa), 1 fire pump and 1 Liqiud-gas mixing device, the foam outlet tube of Liqiud-gas mixing device Caliber is DN150.The collecting pipe of 8 chemical reaction gas making devices has 3 gas vents, and foam dope storage tank has foam original Liquid exports.For Liqiud-gas mixing device as shown in Fig. 2, with for making the mixing chamber that gas and foam dope and water mix, this is mixed Close chamber wall surface be equipped with 1 foam dope import, around foam dope import set 3 gas feeds (each gas into Mouthful direction and foaming substance import direction between angle be 40 °), 1 water inlet and 1 foam outlet, foam outlet It is located at the both ends of tubular structure respectively with foam dope import.The diameter D2 of foaming substance import and the diameter of each gas feed Relation between D3 is：D2/D3=3.5, the relation between the diameter D1 of mixing chamber and the diameter D2 of foam dope import are： D1/D2=1.6, the relation between the diameter D1 of mixing chamber and the diameter D4 of foam outlet are：D1=D4.It is provided in mixing chamber Flow spoiler, the flow spoiler are formed as pyramidal structure shown in Fig. 3, and the taper top of the pyramidal structure is towards the foaming substance Import, the cross section of the flow spoiler is circular configuration, the diameter D7 of the flow spoiler and the diameter of the foaming substance import Relation between D2 is：D7/D2=1.3, the distance L of the top and gas of flow spoiler between the outflux of entrance are 10mm.Wherein, the gas vent of each chemical reaction gas making device is connected with the gas feed of mixing chamber, the bubble of foam dope tank The foam dope inlet communication of foam stoste outlet and mixing chamber, water are provided by fire hydrant.Chemically react gas making device and foam Original fluid container is connected each via pipeline with Liqiud-gas mixing device, and the length of pipeline to chemically react the gas that gas making device generates Enter Liqiud-gas mixing device in 20 seconds.

By shocking by electricity, sparking mode starts chemical reaction gas making device, it is made to generate gas.By the gas and 90L/ of generation The fire water of the foam dope and 2910L/min of min, which is sent into mixing arrangement, carries out mixing generation foam, and foam is filled from mixing The foam outlet put ejects.Using《Fire foam standard》(GB15308-2006) method recorded measures actual foam hair It is 7.1 to steep multiple, and 25% drainage time of foam 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 450m²'s 5000 cubic metres of tank fires only need 25s, realize the big flow injection of compressed air foam fire-extinguishing apparatus.

Embodiment 2

For 450m²5000 cubic metres of tank fires, according to《Froth fire extinguishing system design specification》(GB50151- 2010), the foams mix flow quantity of required offer is not lower than 3000L/min, and the supply duration is not less than 2min.According to public affairs Formula M=ρ f (m+2) V/1000n, which is calculated, needs to configure 6, A2 medicaments column, and gas production rate is at least 27000L/min, wherein f =1.4, the coefficient of foaming m=8 of setting.

Using foam-generating device shown in FIG. 1, including 6 chemical reaction gas making device (respective built-in 1 gas production charge columns ) and gas collecting pipe, 1 20m A2³Foam dope tank (stores 15m in it³Resist molten aqueous foam-forming solution AFFF/AR-3%, Operating pressure is 1MPa), 1 fire pump and 1 Liqiud-gas mixing device, the foam outlet tube caliber of Liqiud-gas mixing device be DN150.The gas collecting pipe of 6 chemical reaction gas making devices has 3 gas vents, and foam dope storage tank has foam dope Outlet.Liqiud-gas mixing device is as shown in Fig. 2, with for making the mixing chamber that gas and foam dope and water mix, the mixing The wall surface of chamber is equipped with 1 foam dope import, 3 gas feed (each gas feeds set around foam dope import Direction and foaming substance import direction between angle be 30 °), 1 water inlet and 1 foam outlet, foam outlet and Foam dope import is located at the both ends of tubular structure respectively.The diameter D2 of the foaming substance import and diameter D3 of each gas feed Between relation be：D2/D3=2, the relation between the diameter D1 of mixing chamber and the diameter D2 of foam dope import are：D1/D2 =1.4, the relation between the diameter D1 of mixing chamber and the diameter D4 of foam outlet is：D1/D4=1.2 is provided in mixing chamber Flow spoiler, the flow spoiler are formed as hemispherical dome structure shown in Fig. 4, and the dome of the hemispherical dome structure is towards the foaming Matter inlet, the cross section of the flow spoiler is circular configuration, the diameter D7 of the flow spoiler and the foaming substance import Relation between diameter D2 is：D7/D2=1.2, the distance L of the top and gas of flow spoiler between the outflux of entrance are 20mm.Wherein, the gas vent for chemically reacting gas making device gas collecting pipe is connected with the gas feed of mixing chamber, foam dope The foam dope outlet of tank and the foam dope inlet communication of mixing chamber, water are provided by fire hydrant.Chemically react gas making device It is connected with foam dope tank each via pipeline with Liqiud-gas mixing device, the length of pipeline so that chemically reacting gas making device generates Gas 30 seconds in enter Liqiud-gas mixing device.

By shocking by electricity, sparking mode starts chemical reaction gas making device, it is made to generate gas.By the gas and 90L/ of generation The fire water of the foam dope and 2910L/min of min, which is sent into mixing arrangement, carries out mixing generation foam, and foam is filled from mixing The foam outlet put ejects.Using《Fire foam standard》(GB15308-2006) method recorded measures actual foam Coefficient of foaming is 7.1, and 25% drainage time of foam is 3min.

Embodiment 3

Foam is generated in the way of embodiment 2 and is put out a fire using the foam, unlike, foaming substance import Relation between diameter D2 and the diameter D3 of each gas feed is：D2/D3=7.As a result 450m is successfully put out²5000 cubes Rice tank fire needs 95s.

Embodiment 4

Foam-generating device similar to Example 2 gross area trickling fire occur for 5 ten thousand stere storage tank of oil depot to flutter It rescues, tank diameter 60m, area is 2826 ㎡, unlike, 2 sets of fixed froth installations are configured, a special train is included per covering device (including chemically reacting gas making device (built-in gas generant composition in accordance A2) and caisson immediately) and a high-jetting vehicle (are filled including gas-liquid mixed Put and foam output device), every high-jetting vehicle configures a foam transport vehicle and provides foam solution, and passes through fixed fire extinguisher canvas hose Net supplies water to fire fighting truck.When implementing to put out a fire, 2 high-jetting vehicles are in the upwind occupy-place for the storage tank that catches fire, and the foam of ejection is from windward To injecting in tank, fire extinguishing is completed.

Immediately the inlet and outlet caliber of chemical reaction gas making device takes DN40, and gas deliverability is not less than 4500Nm；High-jetting vehicle Playpipe caliber takes DN150；The fire pump of a 150L/s (1.0MPa) is configured, it can be achieved that foams mix flow quantity 9000L/ Min, jet length 40m elevate height 30m, realize the voltage stabilizing injection of foam mixing liquid.As a result gross area fire extinguishing only needs 2min.

Embodiment 5

Using foam-generating device shown in FIG. 1, including 6 chemical reaction gas making device (respective built-in 1 gas production charge columns ) and gas collecting pipe, 1 20m A2³(source of foam mixing liquid is same as Example 1, and operating pressure is for foams mix flow container 1MPa) with 1 Liqiud-gas mixing device, the foam outlet tube caliber of Liqiud-gas mixing device is DN150.6 chemical reactions gas dress processed The gas collecting pipe put has 3 gas vents, and foams mix liquid storage tank is exported with foam mixing liquid.Liqiud-gas mixing device is such as Shown in Fig. 2, there is the mixing chamber for mixing gas and foam mixing liquid, the wall surface of the mixing chamber is mixed equipped with 1 foam Close liquid import, 3 gas feeds (direction of each gas feed and the foaming substance import that are set around foam mixing liquid import Direction between angle be 30 °) and 1 foam outlet, foam outlet and foam mixing liquid import are respectively positioned at tubular structure Both ends.Relation between the diameter D2 of foaming substance import and the diameter D3 of each gas feed is：D2/D3=2, mixing chamber Diameter D1 and foam mixing liquid import diameter D2 between relation be：D1/D2=1.4, the diameter D1 and foam of mixing chamber Relation between the diameter D4 of outlet is：D1/D4=1.2 is provided with flow spoiler in mixing chamber, and the flow spoiler is formed as Fig. 4 Shown hemispherical dome structure, the dome of the hemispherical dome structure towards the foaming substance import, the flow spoiler it is transversal Face is circular configuration, and the relation between the diameter D2 of the diameter D7 of the flow spoiler and the foaming substance import is：D7/D2= 1.2, the distance L of the top and gas of flow spoiler between the outflux of entrance is 20mm.Wherein, each chemical reaction gas processed The gas vent of device is connected with the gas feed of mixing chamber, the foam mixing liquid outlet of foams mix flow container and the bubble of mixing chamber Foam mixed liquor inlet communication.Gas making device and foams mix flow container is chemically reacted each via pipeline and Liqiud-gas mixing device to connect Logical, the length of pipeline to chemically react in gas that gas making device generates 30 seconds into Liqiud-gas mixing device.

By shocking by electricity, sparking mode starts chemical reaction gas making device, it is made to generate gas.By react formed gas and The foam mixing liquid of 3000L/min, which is sent into above-mentioned flow in mixing arrangement shown in Fig. 2, to carry out mixing and generates foam, foam from The foam outlet of mixing arrangement ejects.Using《Fire foam standard》(GB15308-2006) method recorded measures reality Frostproof froth n multiple be 7.1,25% drainage time of foam 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 450m²'s 5000 cubic metres of tank fires only need 25s, realize the big flow injection of compressed air foam extinguishing device.

Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is Illustratively, it is impossible to be interpreted as the limitation to the utility model, those of ordinary skill in the art are in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims

1. a kind of foam-generating device, which is characterized in that the foam-generating device includes：

For generating the aerogenesis apparatus of gas by chemically reacting under external force by gas generating material, the aerogenesis apparatus has Gas vent；

For providing the foaming substance feedway of foaming substance, the foaming substance feedway is exported with foaming substance； With

Liqiud-gas mixing device, the Liqiud-gas mixing device have the mixing for mixing the gas and the foaming substance Chamber, the wall surface of the mixing chamber be equipped with to input the gas feed of gas, for input the foaming substance of foaming substance into Mouthful and the foam outlet for foam output, wherein the gas feed is connected with the gas vent, the foaming substance into Mouth and the foaming substance outlet.

2. foam-generating device according to claim 1, which is characterized in that the foaming substance feedway includes：

Foam dope tank, for providing foam dope, the foam dope tank is exported with foam dope；

Water supply installation, for providing water, the water supply installation has water outlet；With

Stoste mixing arrangement, for making foam dope and water is mixed to get foam mixing liquid as foaming substance, the stoste Mixing arrangement have foam dope import, water inlet and the foaming substance outlet, wherein the foam dope import with it is described Foam dope outlet, the water inlet are connected with the water outlet.

3. foam-generating device according to claim 2, which is characterized in that the foam-generating device further comprises：

First pipeline and the second pipeline, the first end of first pipeline are connected with foam dope outlet, first pipe The second end on road is connected with the foam dope import, and the first end of second pipeline is connected with the water outlet, and described The second end of two pipelines is connected with the water inlet；

3rd pipeline and the 4th pipeline, the first end of the 3rd pipeline are connected with foaming substance outlet, the 3rd pipe The second end on road is connected with the foaming substance import, and the first end of the 4th pipeline is connected with the gas vent, described The second end of 4th pipeline is connected with the gas feed；

First flow adjuster and second flow adjuster, the first flow adjuster is located on first pipeline, described Second flow adjuster is located on second pipeline；

3rd flow regulator and the 4th flow regulator, the 3rd flow regulator is located on the 3rd pipeline, described 4th flow regulator is located on the 4th pipeline；And

Controller, the controller are connected to control the foam dope in first pipeline with the first flow adjuster Flow, the controller is connected the flow for controlling the water in second pipeline, institute with the second flow adjuster It states controller and is connected the flow for controlling the foaming substance in the 3rd pipeline, the control with the 3rd flow regulator Device processed is connected the flow for controlling the gas in the 4th pipeline with the 4th flow regulator.

4. foam-generating device according to claim 3, which is characterized in that the first flow adjuster to the described 4th Each in flow regulator includes flowmeter and flow control valve, each in the flowmeter and the flow control valve On a corresponding one be located in first pipeline to the 4th pipeline, the controller and the flowmeter and described Each in flow control valve is connected to control the aperture of the flow control valve according to the detected value of the flowmeter.

5. according to the foam-generating device any one of claim 1-4, which is characterized in that the foam-generating device is into one Step includes foam output device, and the foam output device has foam inlet and bubble jet mouth, the foam inlet and institute Foam outlet connection is stated, is ejected by the foam that the foam inlet enters by the bubble jet mouth.

6. foam-generating device according to claim 5, which is characterized in that

The foam output device includes water tower fire truck and flexible foam pipeline with telescopic arm, the foam The first port of delivery pipe is the foam inlet, and the second port of the foam pipeline is bubble jet mouth, the foam The part of the neighbouring second port of delivery pipe is located on the telescopic arm；Or

The foam output device includes fire-fighting robot and flexible foam pipeline, and the fire-fighting robot has the bubble Foam import and the bubble jet mouth, the first end of the foam pipeline are connected with the foam outlet, the foam conveying The second end of pipe is connected with the foam inlet；Or

The foam output device include foam pipeline and annular foam jet pipe, the foam jet pipe be suitable for around for Store combustible storage tank set, the foam jet pipe be equipped with along the foam jet pipe it is circumferentially-spaced open it is multiple The bubble jet mouth, the first end of the foam pipeline are connected with the foam outlet, and the second of the foam pipeline End is connected with the foam jet pipe.

7. according to the foam-generating device any one of claim 1-4, which is characterized in that the foam-generating device is into one Step includes air accumulator, and the air accumulator has inlet and outlet, and the import of the air accumulator is connected with the gas vent, described The outlet of air accumulator is connected with the gas feed.

8. according to the foam-generating device any one of claim 1-4, which is characterized in that the foaming substance import is set In the first end of the mixing chamber, the foam outlet is located at the second end of the mixing chamber, wherein the gas feed is more A, multiple gas feeds are set around the foaming substance import, and each gas feed connects with the gas vent Logical, each gas feed is at an angle of preferably 30-60 ° of angle with the foaming substance import and sets.

9. foam-generating device according to claim 8, which is characterized in that the diameter D1 of the mixing chamber and the foaming Relation between the diameter D2 of matter inlet is：D1/D2=1.1-4；The diameter D2 of foaming substance import 11 and the gas into Mouthful diameter D3 between relation be：D2/D3=2-6；Between the diameter D1 of the mixing chamber and the diameter D4 of foam outlet Relation is：D1/D4=0.8-2.

10. foam-generating device according to claim 8, which is characterized in that flow spoiler, institute are provided in the mixing chamber It states flow spoiler and is formed as pyramidal structure, hemispherical dome structure or platform structure, the taper top of the pyramidal structure, the hemispherical The dome of structure or the deck roof of the platform structure are facing towards the foaming substance import, wherein the flow spoiler is transversal Face is circular configuration, and the relation between the diameter D2 of the diameter D7 of the flow spoiler and the foaming substance import is：D7/D2= 1-4；And/or

The distance between the top of the flow spoiler and the gas feed L are 0-100mm.

11. according to the foam-generating device described in any one in claim 1-4, which is characterized in that the aerogenesis apparatus is One or more, preferably described aerogenesis apparatus are independently each that sodium azide decomposition reaction gas making device or decomposing ammonium nitrate are anti- Answer gas making device.