阅读说明：本技术 内置式液化介质自膨胀型泡沫消防装置 (Built-in liquefied medium self-expansion type foam fire fighting equipment ) 是由 郎需庆 牟小冬 牟善军 谈龙妹 王林 吴京峰 尚祖政 周日峰 刘全桢 张卫华 于 2018-05-22 设计创作，主要内容包括：本发明公开了一种内置式液化介质自膨胀型泡沫消防装置,所述泡沫消防装置包括泡沫混合液存储装置以及向泡沫混合液存储装置内注入液化介质的液化介质存储装置；还包括具有气液混合腔的气液混合器,与所述气液混合腔连通设置有泡沫混合液入口、液化气体入口以及泡沫出口；其中,气液混合器位于泡沫混合液存储装置的存储腔室内,且泡沫混合液入口设置为能够与泡沫混合液存储装置的液相连通,液化气体入口设置为能够与泡沫混合液存储装置内的气相连通,泡沫混合液和液化气体在气液混合器内混合产生的泡沫从泡沫出口喷出。本发明提供的泡沫消防装置可以解决现有技术中采用压缩气体产生泡沫的方式所存在的占用空间大、需要额外的动力等缺陷。(The invention discloses a kind of built-in liquefied medium self-expansion type foam fire fighting equipment, the foam fire fighting equipment includes foam mixing liquid storage device and injects the liquefied medium storage device of liquefied medium into foam mixing liquid storage device；Further include the air and liquid mixer with gas-liquid mixed chamber, is provided with and communicated with foam mixing liquid entrance, liquid gas inlet and foam outlet with the gas-liquid mixed chamber；Wherein, air and liquid mixer is located in the storage chamber of foam mixing liquid storage device, and foam mixing liquid entrance is configured to be connected to the liquid phase of foam mixing liquid storage device, liquid gas inlet is configured to be connected to the gas phase in foam mixing liquid storage device, and the foam that foam mixing liquid and liquefied gas mix generation in air and liquid mixer is sprayed from foam outlet.Foam fire fighting equipment provided by the invention can solve in the prior art in such a way that compressed gas generates foam present in occupied space it is big, need the defects of additional power.)

1. a kind of built-in liquefied medium self-expansion type foam fire fighting equipment, which is characterized in that the foam fire fighting equipment includes For holding the foam mixing liquid storage device (1) of foam mixing liquid and for holding liquefied medium and can be to the foam The liquefied medium storage device (2) of injection liquefied medium in mixed liquor storage device (1)；

The foam fire fighting equipment further includes the air and liquid mixer (3) with gas-liquid mixed chamber, is connected to the gas-liquid mixed chamber It is provided with foam mixing liquid entrance (31), liquid gas inlet (32) and foam outlet (33)；

Wherein, the air and liquid mixer (3) is located in the storage chamber of the foam mixing liquid storage device (1), and the bubble Foam entry to mixed solution (31) is configured to be connected to the liquid phase of the foam mixing liquid storage device (1) to mix the foam The foam mixing liquid closed in liquid storage device (1) inputs the air and liquid mixer (3), and the liquid gas inlet (32) is set as Can be connected to the gas-phase space in the foam mixing liquid storage device (1) with by the liquefied medium in the foams mix The liquefied gas that gasification generates in liquid storage device (1) inputs the air and liquid mixer (3), the foam mixing liquid and the liquid Change the gas foam that mixing generates in the air and liquid mixer (3) to spray from the foam outlet (33).

2. foam fire fighting equipment according to claim 1, which is characterized in that the foam of the air and liquid mixer (3) Entry to mixed solution (31) is in the lower section of the memory space of the foam mixing liquid storage device (1), the liquid gas inlet (32) in the top of the memory space of the foam mixing liquid storage device (1).

3. foam fire fighting equipment according to claim 1, which is characterized in that the foam mixing liquid storage device (1) with The first control valve (5) for controlling the liquefied medium flow is provided on pipeline between the liquefied medium storage device (2), The pressure gauge (4) of pressure in measurement gas-phase space is provided on the foam mixing liquid storage device (1)；

The foam fire fighting equipment further includes control unit, and described control unit adjusts institute according to the pressure of the pressure gauge (4) State the flow of the first control valve (5).

4. foam fire fighting equipment according to claim 1, which is characterized in that liquefied medium storage device (2) setting There is one, the foam mixing liquid storage device (1) is provided with one or more, the liquefied medium storage device (2) and one It is a or be connected with multiple foam mixing liquid storage devices (1)；

Alternatively, the liquefied medium storage device (2) is provided with multiple, multiple liquefied medium storage devices (2) pass through remittance Flow tube road connects together, and the confluence pipeline is connected with one or with multiple foam mixing liquid storage devices (1).

Wherein, each foam mixing liquid storage device (1) is correspondingly arranged on the air and liquid mixer (3).

5. foam fire fighting equipment according to claim 1, which is characterized in that the foam mixing liquid storage device (1) Operating pressure is 0.4-1.4Mpa.

6. foam fire fighting equipment according to claim 5, which is characterized in that the foam mixing liquid storage device (1) Operating pressure is 0.6-1.0Mpa, the range of pressure fluctuations of the foam mixing liquid storage device (1) is in ± 0.1Mpa.

7. foam fire fighting equipment described in any one of -6 according to claim 1, which is characterized in that the liquefied medium storage The liquefied medium that device (2) is set as storage is pressed into the foam mixing liquid storage device (1) under gas pressure.

8. foam fire fighting equipment described in any one of -6 according to claim 1, which is characterized in that the air and liquid mixer (3) one end is provided with the foam mixing liquid entrance (31), and the other end is provided with the foam outlet (33), the liquefied gas On the side wall that body entrance (32) is arranged between the air and liquid mixer (3) both ends.

9. foam fire fighting equipment according to claim 8, which is characterized in that the liquid gas inlet (32) is provided with one A or multiple, multiple liquid gas inlets (32) are provided at circumferentially spaced along the side wall of the air and liquid mixer (3).

10. foam fire fighting equipment according to claim 8, which is characterized in that the face of the foam mixing liquid entrance (31) Relationship between the product S1 and area S2 of the liquid gas inlet (32) are as follows: S1/S2=10~60；

Relationship between the area S4 of the foam outlet (33) and the area S1 of the foam mixing liquid entrance (31) are as follows: S4/ S1=1.5~6.

11. foam fire fighting equipment according to claim 10, which is characterized in that the face of the foam mixing liquid entrance (31) Relationship between the product S1 and area S2 of the liquid gas inlet (32) are as follows: S1/S2=16~40；

Relationship between the area S4 of the foam outlet (33) and the area S1 of the foam mixing liquid entrance (31) are as follows: S4/ S1=2.5~5.

12. foam fire fighting equipment according to claim 8, which is characterized in that the gas-liquid of the air and liquid mixer (3) Be provided with the flow spoiler (34) for disturbing liquid stream in mixing chamber, the liquid gas inlet (32) in the flow spoiler (34) and On side wall between the foam mixing liquid entrance (31).

13. foam fire fighting equipment according to claim 12, which is characterized in that the flow spoiler (34) is formed as taper knot Structure, hemispherical dome structure or platform structure；

The deck roof of the taper top of the pyramidal structure, the dome of the hemispherical dome structure or the platform structure is facing towards institute State foam mixing liquid entrance (31).

14. foam fire fighting equipment according to claim 12, which is characterized in that the maximum cross section of the flow spoiler (34) Relationship between S3 and the area S1 of the foam mixing liquid entrance (31) are as follows: S3/S1=1.1~3.8.

15. foam fire fighting equipment according to claim 12, which is characterized in that the maximum cross section of the flow spoiler (34) Relationship between S3 and the area S1 of the foam mixing liquid entrance (31) are as follows: S3/S1=1.4~3.

16. foam fire fighting equipment according to claim 12, which is characterized in that the gas-liquid mixed is intracavitary to be provided at least One spaced porous structure (35)；Multiple holes are provided on each porous structure (35)；The porous structure (35) hole is towards the foam mixing liquid entrance (31), and the porous structure (35) are compared at the top of the flow spoiler (34) Closer to the foam mixing liquid entrance (31).

Technical field

The present invention relates to fire-fighting technique fields, fill more particularly to a kind of built-in liquefied medium self-expansion type foam firefighting It sets.

Background technique

Existing compressed air foam fire extinguishing is carried out by the way of mainly being mixed generation foam with foam mixing liquid using gas Fire extinguishing.Specific compressed air foam fire-fighting mode mainly has the fire extinguishing of gerotor type compressed air foam and air storing type foam fire-fighting two Kind mode.

Wherein, the fire extinguishing of gerotor type compressed air foam generallys use compressor or the mode of compressed gas cylinder is supplied Gas is held essentially constant in course of injection pressure, and compressor and compressed gas cylinder air demand are limited, are unable to satisfy big flow The requirement of high pressure gas supply, and if need to realize that big-flow high-pressure power supplies, need setting multiple compressors or compressed gas cylinder (such as by taking the foam truck of a flow 150L/S as an example, the supply flow rate of gas is 1050L/s, and gas supply is needed by more The supply of large-scale air compressor machine), occupied space is big, does not often have the space of arrangement in oil depot tank field, device area, it is unfavorable on site Arrangement.And have the following deficiencies: that foam bubbles are not of uniform size, foam is uneven, performance using the foam that aspirated mode generates The defects of unstable, foam is easily broken, burn resistance is poor, fire-fighting efficiency is not high.

Another air storing type foam fire-fighting usually stores compressed gas in foamite container, in big flow injection, pressure Contracting gas will be consumed largely, and it is at this time the high-pressure injection for guaranteeing extinguishing chemical, then that injection pressure, which will continue with injection and will be greatly reduced, It needs to supplement compressed gas into foamite container in time, and under big flow spray regime, only lean on air compressor machine and compressed gas steel Bottle not can guarantee enough supplements of compressed gas at all, leads to not effectively realize high-pressure injection requirement, influences extinguishing effect.When It when carrying out fire disaster fire extinguishing, then needs to produce big flow foam fire-fighting, foams mix flow quantity improves at this time, compressed gas Air demand also needs to increase with it, and existing compressed air foam producing method cannot achieve the confession of big-flow high-pressure compressed gas Answer, foams mix flow quantity only 20~30L/s is mainly used in the fire attack of general scale at present, as building fire, Ground small range trickling fire etc., can not be in the application in large-scale storage tank fire or large-scale ground spill fire.And it is existing Some compressed air foam producing methods need additional power to carry out compressed gas, and device structure and management are complicated for operation.

For this purpose, the mode that need to provide a kind of new generation foam is put out a fire using compressed air foam in the prior art to overcome And defect present in air storing type foam fire-fighting.

Summary of the invention

The purpose of the invention is to overcome occupancy present in the mode of compressed gas generation foam in the prior art empty Between it is big, need the defects of additional power.

To achieve the goals above, one aspect of the present invention provides a kind of built-in liquefied medium self-expansion type foam firefighting dress It sets, the foam fire fighting equipment includes foam mixing liquid storage device for holding foam mixing liquid and for holding liquefaction Medium and the liquefied medium storage device that liquefied medium can be injected into the foam mixing liquid storage device；

The foam fire fighting equipment further includes the air and liquid mixer with gas-liquid mixed chamber, is connected to the gas-liquid mixed chamber It is provided with foam mixing liquid entrance, liquid gas inlet and foam outlet；

Wherein, the air and liquid mixer is located in the storage chamber of the foam mixing liquid storage device, and the foam Entry to mixed solution is configured to be connected to the liquid phase of the foam mixing liquid storage device to store the foam mixing liquid Foam mixing liquid in device inputs the air and liquid mixer, and the liquid gas inlet is configured to and the foams mix Gas-phase space in liquid storage device is connected to generation that the liquefied medium gasifies in the foam mixing liquid storage device Liquefied gas input the air and liquid mixer, the foam mixing liquid and the liquefied gas mix in the air and liquid mixer The foam generated is closed to spray from the foam outlet.

Preferably, foam mixing liquid entrance the depositing in the foam mixing liquid storage device of the air and liquid mixer The lower section in space is stored up, the liquid gas inlet is in the top of the memory space of the foam mixing liquid storage device.

Preferably, it is provided on the pipeline between the foam mixing liquid storage device and the liquefied medium storage device The first control valve of the liquefied medium flow is controlled, is provided on the foam mixing liquid storage device in measurement gas-phase space The pressure gauge of pressure；

The foam fire fighting equipment further includes control unit, and described control unit adjusts institute according to the pressure of the pressure gauge State the flow of the first control valve.

Preferably, the liquefied medium storage device is provided with one, and the foam mixing liquid storage device is provided with one A or multiple, the liquefied medium storage device is connected with one or with multiple foam mixing liquid storage devices；

Alternatively, the liquefied medium storage device is provided with multiple, multiple liquefied medium storage devices pass through confluence Piping connection is to together, and the confluence pipeline is connected with one or with multiple foam mixing liquid storage devices.

Wherein, each foam mixing liquid storage device is correspondingly arranged on the air and liquid mixer.

Preferably, the operating pressure of the foam mixing liquid storage device is 0.4-1.4Mpa.

Preferably, the operating pressure of the foam mixing liquid storage device is 0.6-1.0Mpa, the foam mixing liquid is deposited The range of pressure fluctuations of storage device is in ± 0.1Mpa.

Preferably, the liquefied medium that the liquefied medium storage device is set as storage is pressed into described under gas pressure Foam mixing liquid storage device.

Preferably, one end of the air and liquid mixer is provided with the foam mixing liquid entrance, and the other end is provided with described Foam outlet, the liquid gas inlet are arranged on the side wall between the air and liquid mixer both ends.

Preferably, the liquid gas inlet is provided with one or more, and multiple liquid gas inlets are along the gas The side wall of liquid mixer is provided at circumferentially spaced.

Preferably, the relationship between the area S1 of the foam mixing liquid entrance and the area S2 of the liquid gas inlet Are as follows: S1/S2=10~60；

Relationship between the area S4 of the foam outlet and the area S1 of the foam mixing liquid entrance are as follows: S4/S1= 1.5~6.

Preferably, the relationship between the area S1 of the foam mixing liquid entrance and the area S2 of the liquid gas inlet Are as follows: S1/S2=16~40；

Relationship between the area S4 of the foam outlet and the area S1 of the foam mixing liquid entrance are as follows: S4/S1= 2.5~5.

Preferably, the intracavitary flow spoiler being provided with for disturbing liquid stream of the gas-liquid mixed of the air and liquid mixer, institute Liquid gas inlet is stated on the side wall between the flow spoiler and the foam mixing liquid entrance.

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 relationship between the maximum cross section S3 of the flow spoiler and the area S1 of the foam mixing liquid entrance Are as follows: S3/S1=1.1~3.8.

Preferably, the relationship between the maximum cross section S3 of the flow spoiler and the area S1 of the foam mixing liquid entrance Are as follows: S3/S1=1.4~3.

Preferably, the gas-liquid mixed is intracavitary is provided at least one spaced porous structure；It is each described porous Multiple holes are provided in structure；The hole of the porous structure is towards the foam mixing liquid entrance, and the top of the flow spoiler Compared to the porous structure closer to the foam mixing liquid entrance.

Technical solution provided by the invention avoids the technology for using compressed gas gas supply to generate foam in the prior art Route, technology provided by the invention is after inputting foam mixing liquid storage device for liquefied medium, liquefied medium self-expanding gasification Gas, pressure rise in foam mixing liquid storage device are generated, the gas and foam mixing liquid that interior gasification expansion generates exist Foam can be generated automatically into mixing in air and liquid mixer under gas pressure, not need additional power, maintenance is simple, easily Operation.In addition, technical solution provided by the invention, which solves, need to be equipped with sky when generating foam using compressed gas in the prior art The big problem of occupied space caused by press, compressed gas cylinder, and air compressor machine and compressed gas steel are leaned in the prior art Bottle not can guarantee enough supplements of compressed gas, lead to not the problem of effectively realizing high-pressure injection requirement.

Detailed description of the invention

Fig. 1 is the knot according to liquefied medium self-expansion type foam fire fighting equipment built-in in an embodiment of the invention Structure schematic diagram；

Fig. 2 is the knot according to liquefied medium self-expansion type foam fire fighting equipment built-in in another embodiment of the present invention Structure schematic diagram；

Fig. 3 is the structural schematic diagram of air and liquid mixer；

Fig. 4 is the arrangement schematic diagram of the liquid gas inlet of air and liquid mixer；

Fig. 5 is a kind of structural schematic diagram of flow spoiler；

Fig. 6 is another structural schematic diagram of flow spoiler；

Fig. 7 is the yet another construction schematic diagram for streaming device.

Description of symbols

1- foam mixing liquid storage device；2- liquefied medium storage device；3- air and liquid mixer；31- foam mixing liquid enters Mouthful；32- liquid gas inlet；33- foam outlet；34- flow spoiler；35- porous structure；4- pressure gauge；The first control valve of 5-；6- Second control valve；7- third control valve；8- froth nozzle.

Specific embodiment

Detailed description of the preferred embodiments below.It should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.

In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "vertical", "horizontal", The orientation or positional relationship of the instructions such as "top", "bottom", " axial direction ", " radial direction ", " circumferential direction ", "inner", "outside" is based on shown in attached drawing Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of 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 present invention, the meaning of " plurality " is two or more, unless separately There is clearly specific restriction.

It is standby that the present invention provides a kind of built-in liquefied medium self-expansion type foam fire fighting equipment, as depicted in figs. 1 and 2, should Foam fire fighting equipment includes foam mixing liquid storage device 1 for holding foam mixing liquid and for holding liquefied medium simultaneously The liquefied medium storage device 2 of liquefied medium can be injected into the foam mixing liquid storage device 1；The foam fire fighting equipment Further include the air and liquid mixer 3 with gas-liquid mixed chamber, with the gas-liquid mixed chamber be provided with and communicated with foam mixing liquid entrance 31, Liquid gas inlet 32 and foam outlet 33；

Wherein, air and liquid mixer 3 is located in the storage chamber of foam mixing liquid storage device 1, and the foam mixing liquid Entrance 31 is configured to be connected to the liquid phase in foam mixing liquid storage device 1 with will be in foam mixing liquid storage device 1 Foam mixing liquid inputs air and liquid mixer 3, and liquid gas inlet 32 is configured to and the gas in foam mixing liquid storage device 1 Phase space connection for the liquefied gas for generation that liquefied medium gasifies in foam mixing liquid storage device 1 input gas-liquid to mix Clutch 3, the storage that the foam mixing liquid entrance 31 of specifically setting air and liquid mixer 3 is located at foam mixing liquid storage device 1 are empty Between lower section, liquid gas inlet 32 is located at the top of the memory space of foam mixing liquid storage device 1.Enter gas-liquid mixed The foam that foam mixing liquid and liquefied gas in device 3 mix generation in air and liquid mixer 3 is sprayed from foam outlet 33.

Technical solution provided by the invention avoids the technology for using compressed gas gas supply to generate foam in the prior art Route, technical solution of the present invention is after inputting foam mixing liquid storage device 1 for liquefied medium, liquefied medium self-expanding gasification Gas, pressure rise in foam mixing liquid storage device 1 are generated, the gas and foam mixing liquid that interior expansion gasification generates exist Foam can be generated automatically into mixing in air and liquid mixer 3 under the gas pressure that gasification generates, not need additional power, Maintenance is simple, easy to operate.

In addition, technical solution provided by the invention solves to be needed to be equipped with when generating foam using compressed gas in the prior art The big problem of occupied space caused by air compressor machine, compressed gas cylinder, is mixed as long as liquefied medium is continuously supplied to foam Close liquid storage device 1, will self-expanding generate enough liquefied gas and mix generation foam with foam mixing liquid, to solve The enough supplements that not can guarantee compressed gas by air compressor machine and compressed gas cylinder in the prior art, lead to not effectively to realize The problem of high-pressure injection requires.

In technical solution provided by the invention, it is preferable that liquefied medium storage device 2 is set as stored liquefied medium It is pressed into foam mixing liquid storage device 1 under gas pressure.

In use, to be contained with the liquefied medium storage devices 2 of the liquefied mediums such as liquid nitrogen or liquid CO 2 with Foam mixing liquid storage device 1 be connected to, liquefied medium gas pressure (such as liquefied medium itself gasification generate pressure or its Its gas pressure) promotion under enter in foam mixing liquid storage device 1, then liquefied medium is in foam mixing liquid storage device Gasification in 1 is so that pressure rise in foam mixing liquid storage device 1, so that the liquefied gas and foam mixing liquid of gasification are at this Air and liquid mixer 3, such liquefied gas are entered by foam mixing liquid entrance 31 and liquid gas inlet 32 respectively under pressure It can be projected with mixed foaming and by bubble jet in air and liquid mixer 3 with foam mixing liquid.

By gas pressure liquefied medium is entered in foam mixing liquid storage device 1, can be better achieved automatic Foaming, as long as opening valve, so that the liquefied medium in liquefied medium storage device 2 is in gas entrance or liquefied medium itself Gasify generate pressure under enter in foam mixing liquid storage device 1, can automatic foaming, be not necessarily to extra power.

In the present invention, foam mixing liquid mixes generation with water by the foam dope of fire extinguishing, and liquefied medium can be liquid At least one of nitrogen, liquid CO 2, liquefied gas, liquefaction halogenated hydrocarbon gas.Since liquefied medium and foam are mixed Closing the foam generated after liquid mixing is for putting out a fire, and therefore, the type of gas caused by liquefied medium is limited to help to go out Fire can play the gas of inhibition and smothering action to fire, and cannot have destruction to foam itself.Normally, it liquefies Medium uses liquid nitrogen, and i.e. gasification is gas to liquid nitrogen under room temperature environment, and there is no need to operation bidirectionals can be obtained gas.Liquid nitrogen exists Maintenance is few during storage, user-friendly and management.In addition the gasification ratio of liquid nitrogen is 700-710 times, unit volume Liquid nitrogen can be used for the foaming of 10 times or more foam mixing liquids.

In a preferred embodiment of the invention, as shown in Figure 1, being deposited in liquefied medium storage device 2 with foam mixing liquid The first control valve 5 is provided on pipeline between storage device 1, control was provided at the foam outlet 33 of air and liquid mixer 3 to go out Second control valve 6 of mouthful switch, the pressure of pressure in gas-phase space is provided in measuring device on foam mixing liquid storage device 1 Table 4.The foam fire fighting equipment further includes control unit, which can adjust the first control according to the pressure of pressure gauge 4 The flow of valve 5, to guarantee that pressure in foam mixing liquid storage device 1 is constant or fluctuates in a certain range.

It is normal pressure in foam mixing liquid storage device 1 when without kindling state, the foam outlet 33 of air and liquid mixer 3 Second control valve 6 is in normal status, the first control between liquefied medium storage device 2 and foam mixing liquid storage device 1 Valve 5 is in normal status.Wherein self-supercharging device itself can be arranged in liquefied medium storage device 2, which is liquefaction The included liquefied medium that facilitates of medium storage device 2 gasifies so that being able to maintain in liquefied medium storage device 2 higher The device of pressure.

In the case of fire, by the first control valve between liquefied medium storage device 2 and foam mixing liquid storage device 1 5 open, and liquefied medium is in the gas-phase space of liquefied medium storage device 2 under the promotion of gas pressure, into foam mixing liquid In storage device 1, and to gasify immediately, after gasification, the pressure of gas-phase space persistently rises in foam mixing liquid storage device 1, to After being increased to predetermined value, the foam mixing liquid in foam mixing liquid storage device 1 is pressed by foam mixing liquid entrance 31 In air and liquid mixer 3 and liquefied gas is pressed into air and liquid mixer 3 by liquid gas inlet 32, foam mixing liquid With liquefied gas in air and liquid mixer 3 mixed foaming, then by foam outlet 3 froth nozzle spray (foam outlet 33 The second control valve 6 open at this time).After terminating injection, foam mixing liquid is filled again.

Wherein, in fire extinguishing, during liquefied medium injects in foam mixing liquid storage device 1, foam mixing liquid is deposited 1 internal pressure power of storage device is kept constant, if pressure is higher than predetermined value (according to pressure gauge 4) in the device, control unit provides finger It enables, the aperture of the first control valve 5 is become smaller, the flow of liquefied medium is reduced, conversely, the aperture of the first control valve 5 is become larger, increase The flow of big liquefied medium.

Wherein the flow of liquefied medium injection depends on the size and foam of 1 gas-phase space of foam mixing liquid storage device The foam flow of outlet 33.The amount of injection liquefied medium should meet that pressure in foam mixing liquid storage device is constant or predetermined model Interior fluctuation is enclosed, to meet the demand of frostproof froth n.The aperture that the first control valve 5 is adjusted by control unit, may be implemented liquid The flow for changing medium is adjusted.Wherein the operating pressure of foam mixing liquid storage device 1 is preferably in 0.4-1.4Mpa, it is highly preferred that In 0.6-1.0Mpa, range of pressure fluctuations is ± 0.1Mpa.The operating pressure is the foam fire fighting equipment when generating foam Pressure in foam mixing liquid storage device 1.

Foam fire fighting equipment provided by the invention is easy to operate in fire extinguishing, can manually opened the after confirming fire behavior One control valve 5；Autocontrol valve can also be installed on pipeline, remotely started；If protection zone has set fire hazard monitoring equipment, can By the standby linkage of monitoring device and the foam fire fighting equipment, i.e., when fire hazard monitoring monitoring of tools arrives fire, control autocontrol valve is certainly Dynamic to open, liquefied medium in liquefied medium storage device 2 is under gas pressure automatically into arriving foam mixing liquid storage device 1 Interior, then the liquefied gas in foam mixing liquid storage device 1 and foam mixing liquid enter mixing hair in air and liquid mixer 3 Bubble, so as to realize automatic starting foam fire-fighting.

In the technical solution provided by the present invention, a liquefied medium storage device 2 can be deposited with a foam mixing liquid Storage device 1 connects, and can also connect with multiple foam mixing liquid storage devices 1.It as figure 1 shows a liquefied medium storage dress Set 2 embodiments connecting with a foam mixing liquid storage device 1, and Fig. 2 shows a liquefied medium storage device 2 with The embodiment that multiple foam mixing liquid storage devices 1 connect.

As shown in Fig. 2, liquefied medium storage device 2 is provided with one, foam mixing liquid storage device 1 be provided with it is multiple, Liquefied medium storage device 2 is connected respectively with to multiple foam mixing liquid storage devices 1 with multiple foam mixing liquid storage devices 1 Liquefied medium is provided；Each foam mixing liquid storage device 1 is correspondingly arranged on an air and liquid mixer 3 and (is not shown in the Fig. 2 Air and liquid mixer 3 in foam mixing liquid storage device 1 air and liquid mixer can be stored in foam mixing liquid as shown in connection with fig. 1 Setting in device 1).It can connect froth nozzle 8 in the foam outlet 33 of each air and liquid mixer 3, to facilitate foam Injection.In addition, the first control of setting on main pipe rail between the liquefied medium storage device 2 and foam mixing liquid storage device 1 Third control valve 7 is arranged in valve 5 again on each branch line, to control the liquid to each foam mixing liquid storage device 1 respectively Change rate-of flow.

In addition, liquefied medium storage device 2 may be provided with it is multiple, to realize the lasting supply of liquefied medium, multiple liquefaction Medium storage device 2 is connected together by the pipeline that converges, and the confluence pipeline is deposited with one or with multiple foam mixing liquids Storage device 1 is connected.Likewise, each foam mixing liquid storage device 1 is correspondingly arranged on an air and liquid mixer 3.

The specific structure of lower air and liquid mixer 3 is described below in detail.

As shown in figure 3, one end of air and liquid mixer 3 is provided with foam mixing liquid entrance 31, the other end in present embodiment It is provided with foam outlet 33, liquid gas inlet 32 is arranged on the side wall between 3 both ends of air and liquid mixer.Preferably, Air and liquid mixer 3 is cylinder-like structure or is square tube shape structure, and one end of tubular structure is arranged in foam mixing liquid entrance 31, The other end of tubular structure is arranged in foam outlet 33.

One or more has can be set in liquid gas inlet 32, and in the case where being arranged multiple, multiple liquefied gas enter Mouthfuls 32 are provided at circumferentially spaced (as shown in Figure 4) along the side wall of air and liquid mixer 3.In addition, foam mixing liquid entrance 31 and bubble Foam outlet 33 may also set up multiple, and each mouthful of setting is not limited to the setting in present embodiment.

Preferably, the relationship between the area S1 of foam mixing liquid entrance 31 and the area S2 of liquid gas inlet 32 are as follows: S1/S2=10~60；Relationship between the area S4 of the foam outlet 33 and the area S1 of the foam mixing liquid entrance 31 Are as follows: S4/S1=1.5~6.

It is highly preferred that the relationship between the area S1 of foam mixing liquid entrance 31 and the area S2 of liquid gas inlet 32 Are as follows: S1/S2=16~40；Relationship between the area S4 of foam outlet 33 and the area S1 of foam mixing liquid entrance 31 are as follows: S4/ S1=2.5~5.By the area ratio relationship of each mouth of control, help to control each mouthful of discharge relation, so that It foams more abundant, obtains the higher foam of quality.Wherein, each mouthful of area said here is the gross area, for example, liquefied gas The area of body entrance 32 is the gross area of multiple liquid gas inlets 32.

In present embodiment, in the intracavitary flow spoiler 34 being provided with for disturbing liquid stream of the gas-liquid mixed of air and liquid mixer 3, So that foam mixing liquid mixes sufficiently with liquefied gas.Preferably, liquid gas inlet 32 is in flow spoiler 34 and foams mix On side wall between liquid entrance 31.

Wherein, the flow spoiler 34 is formed as pyramidal structure (such as Fig. 5), hemispherical dome structure (such as Fig. 6) or platform knot The structure of structure (such as Fig. 7) or other irregular shapes, the taper top of the pyramidal structure, the dome of the hemispherical dome structure or The deck roof of platform structure described in person is facing towards the foam mixing liquid entrance 31.It is mixed towards foam that flow spoiler 34 is installed as top Liquid entrance 31 is closed, the fluid that liquefied gas and foam mixing liquid mix rushes at flow spoiler 34, can be conducive to liquefied medium and foam is mixed Being sufficiently mixed for liquid is closed, to obtain uniform in foaming, foam of good performance.

Preferably, the relationship between the maximum cross section S3 of flow spoiler 34 and the area S1 of foam mixing liquid entrance 31 are as follows: S3/S1=1.1~3.8, it is highly preferred that S3/S1=1.4~3.

The ratio being arranged between the area S3 of the flow spoiler 14 and the area of foam mixing liquid entrance 31 is one preferred Range, and if out of proportion will cause that frostproof froth n is insufficient, resistance becomes larger and the bad phenomenons such as flow-reduction.For example, if The area of flow spoiler is too small, then foams insufficient, and if area is too big, it will cause resistance is big, flow-reduction.

It is settable on flow spoiler 34 to generate intracavitary mounting portion 341 for being fixed on foam to install flow spoiler 34, such as scheme The each flow spoiler 34 shown in 5- Fig. 7.

Certainly, the set-up mode of flow spoiler 34 is also not necessarily limited to as described above, for example, settable multiple flow spoilers, are distributed in Foam generates intracavitary different location, and any type of flow spoiler that can play the role of flow-disturbing to liquid stream.

In present embodiment, the gas-liquid mixed of air and liquid mixer 3 is intracavitary to be additionally provided at least one spaced orifice plate Or the porous structures such as silk screen 35, multiple holes are provided on each porous structure 35；The hole of porous structure 35 is towards foam mixing liquid Entrance 31, and porous structure 35 is compared closer to foam mixing liquid entrance 31 in the top of flow spoiler 34.It is smashed by flow spoiler 34 Liquid stream continues to rush at porous structure 35 around flow spoiler 34, can further be disturbed to liquid stream by porous structure 35, Mix it further.

Below by specific embodiment to built-in liquefied medium self-expansion type foam fire fighting equipment provided by the invention Application be described.