CN103055455A - Multifunctional compressed air foam fire extinguishing device - Google Patents

Multifunctional compressed air foam fire extinguishing device Download PDF

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Publication number
CN103055455A
CN103055455A CN2012105804397A CN201210580439A CN103055455A CN 103055455 A CN103055455 A CN 103055455A CN 2012105804397 A CN2012105804397 A CN 2012105804397A CN 201210580439 A CN201210580439 A CN 201210580439A CN 103055455 A CN103055455 A CN 103055455A
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China
Prior art keywords
foam
fire
valve
chamber
extinguishing
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CN2012105804397A
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Chinese (zh)
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CN103055455B (en
Inventor
王永路
王晓阳
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Dongguan Sihuiwei Electronic Technology Co., Ltd.
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CHENGDU BECKLY TECHNOLOGY Co Ltd
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Publication of CN103055455A publication Critical patent/CN103055455A/en
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Abstract

The present invention discloses a multifunctional compressed air foam fire-extinguishing device which comprises a fire-extinguishing spray gun, an air compressor and a high-pressure water pump, wherein: the fire-extinguishing spray gun comprises a mixing chamber, a foaming chamber and a nozzle which are connected in sequence; the mixing chamber is communicated with the foaming chamber and the high-pressure water pump, and a check valve disposed on the mixing chamber wall is communicated with the air compressor via a valve piping; a cylindrical cavity filter screen is arranged inside the foaming chamber; and the air compressor is also connected a adjustable foam adding valve piping in parallel. According to the present invention, the fire-extinguishing spray gun is integratedly and compactly designed, and matches with a pneumatic foam proportioning mixing device, and the high-pressure water pump is connected with the fire-extinguishing spray gun; so without any decompression, injection pressure of extinguishing media is high; and through a proportional pressure regulating valve, a throttle and the check valve of the mixing chamber, the proportions of each medium can be adjusted. The fire-extinguishing device of the present invention is easy to move, and is suitable for a variety of fire extinguishing media; and meets the requirements of different fire scenes.

Description

A kind of multifunctional compressed air foam extinguishing device
Technical field
The invention belongs to Machine Design and make the field, especially belong to fire-fighting machinery device design and make field, particularly a kind of multifunctional compressed air foam extinguishing device.
Background technology
Existing fire-fighting fire extinguishing adopts multiple firing-fighting medium according to different needs, such as water, water-air, water-foam solution, the water-foam solution-blending agents such as air; Use the different medium Corresponding matching to use different fire-fighting equipments.
Compressed air foam extinguishing usually makes the pressure coupling of compressed air and mixed liquor by pressure equaliser, make compressed air enter mixed liquor and form two phase flow, and pressure equaliser structure automaticity is higher, but complex structure, involve great expense, difficult in maintenance; Such device is because the system controlled pressure changes greatly, and water, foam, compressed-air actuated mixed proportion error are also larger, and particularly the equalization point of gas, hydraulic coupling easily drifts about, thereby causes the injection interruption of compressed-air foam.
Chinese patent application 200420082250.6 discloses a kind of compressed air foam fire-extinguishing apparatus, by water pump, foam proportioning unit, air compressor, big gun air and liquid mixer, big gun flow spoiler, rifle air and liquid mixer, rifle flow spoiler, fire water monitor, fire-fighting lance etc.The pressure water source that water pump the provides foam proportioning unit of flowing through mixes the mixed liquor of formation to scale with foam solution in the device; big gun with or rifle with air and liquid mixer in the air that provided by air compressor of adding; the mixed liquor that forms-compressed air two phase flow again through big gun with or rifle spray compressed-air foam by fire water monitor or fire-fighting lance after stirring with flow spoiler, put out a fire and the effect of thermal insulation protection to reach.In fact, this device provides pressure water source with water pump, foam solution in foam proportioning unit and device mixes the mixed liquor of formation in proportion, big gun with or rifle with air and liquid mixer in the air that provided by air compressor of adding, form mixed liquor-compressed air two phase flow, again through big gun with or rifle stir with flow spoiler after by fire water monitor or fire-fighting lance injection compressed-air foam.This negative pressure of vacuum suction line of Venturi effect that utilizes easily produces pressure oscillation, gas, liquid is mixed bring adverse effect.Simultaneously, owing to pressure easily fluctuates, so foams mix is difficult to form the suitable scene of fire compressed-air foam in different stages than regulating inconvenience.
Chinese patent application 200610038368.2 discloses a kind of compressed air foam fire-extinguishing apparatus, this device comprises water pump, foam liquid tank, air compressor, wherein the air feed end of air compressor connects the air inlet of described foam liquid tank by the valve control piper, the outlet of foam liquid tank crosses into water bubble mixed flow pipeline with exit of pump by the pressure water line that the valve control piper consists of by the foam solution pipeline that the valve control piper consists of, and the air feed end of air compressor also crosses into the compressed-air foam liquid pipeline that connects the fire-fighting Injection Facilities by the compressed air line that the valve control piper consists of with water bubble mixed flow pipeline.This device has improved the structures such as foams mix, but its water pump is arranged at firing-fighting medium mixing front end, and mixed firing-fighting medium is pressurizeed, and is unfavorable for that firing-fighting medium mixes, each equipment that simultaneously the control firing-fighting medium is mixed such as proportional control valve, choke valve require very high, and control is difficult.
In fire-fighting equipment, fire-fighting spray gun is the important end-equipment of fire-fighting fire extinguishing, and its spray regime is mainly divided direct current water column, water smoke, thin water smoke etc., if add foam solution in the liquid, can realize containing the direct current water column, water smoke, thin water smoke of foam etc.Common fire-fighting lance is used for spraying low pressure water flow, and its jet is single, and water consumption is large; Giant is used for inject high pressure current or thin water smoke, and its jet is single equally, and water consumption is large; Foam-making branch utilizes venturi or principle of negative pressure, allows foam solution mix with air and produces foam, and coefficient of foaming is low, and the fire extinguishing effect is relatively poor.Existing common fire-fighting lance, giant and foam-making branch can not be changed mutually easily, usually can not satisfy the conversion needs of multiple extinguishing method at the changeable fire-extinguishing location of situation.
Summary of the invention
The present invention discloses a kind of multifunctional compressed air foam extinguishing device according to the deficiencies in the prior art.The problem to be solved in the present invention provides and a kind ofly can satisfy pressure greater than the direct projection of 4.5MPa and thin atomized water spray, can lift mobile fire-extinguishing apparatus of fighting at the hand that same equipment sprays the compressed air foam extinguishing medium again.
The present invention is achieved through the following technical solutions:
The multifunctional compressed air foam extinguishing device comprises fire extinguishing spray gun, air compressor and high-pressure hydraulic pump, and wherein: described fire extinguishing spray gun comprises hybrid chamber, foam chamber and the nozzle that is linked in sequence; The described hybrid chamber port of export is communicated with foam chamber, arrival end is communicated with by valve pipeline with high-pressure hydraulic pump, and the hybrid chamber wall has check valve to be communicated with by valve pipeline with air compressor; The entrance point opening is arranged in the described foam chamber and be fixed on the circle tube leaching net of foam chamber wall.
Further described air compressor also passing ratio pressure regulator valve is communicated with the foam holding vessel, the foam holding vessel other end is connected with triple valve inlet by choke valve, another entrance of triple valve is connected by valve pipeline with the water source, and the outlet of triple valve is communicated with the hybrid chamber of fire extinguishing spray gun by high-pressure hydraulic pump and valve pipeline.
Said nozzle spray orifice aperture can be regulated.
Above-mentioned circle tube leaching net hole order number is 100~300 orders.
Extinguishing device of the present invention is applicable to the fire-fighting operation of multiple firing-fighting medium, comprise water, water-air, water-foam solution, the water-foam solution-blending agents such as air, each component devices is simple for structure, easy to connect be assembled on the mobile platform by promote or hand to lift conveniently moving reliable.
The present invention is with the integrated fire extinguishing spray gun of hybrid chamber, foam chamber and Nozzle combination.At mixing section the check valve that allows compressed air to enter is set, utilizes check valve, and automatically change the fire extinguishing spray regime by regulating the firing-fighting medium expulsion pressure, utilize the circle tube leaching net structure to improve coefficient of foaming; Adopt dismountable different pore size shower nozzle or continuous regulation mechanism to regulate the spray orifice aperture, when needs inject high pressure current, adopt the small-bore orifice shower nozzle, because the medium output reduces, pressure medium increases, and pressure medium is greater than 4.5MPa usually, the pressure of compressed air one end of check valve is low, air can not enter, and the high-pressure extinction medium can not flow backwards yet, and the high-pressure extinction medium sprays by nozzle; When needs sprays air-foam, then will adopt the large aperture orifice shower nozzle, nozzle hole area sharply increases, the mixing section pressure drop, one-way valve opens, compressed air enters the mixing section hydrostatic column to be mixed with foam solution, after the foaming of foaming section, sprayed by the nozzle squit hole.Said structure compact and with water pump, pneumatic plant and the fine coupling of foams mix device, be specially adapted to the extinguishing device of small-sized movable.
The present invention adopt circle tube leaching net as foam device and with its integrated installation the fire extinguishing spray gun in, pipeline is passed through in compressed air and foam solution mixing, when fluid-mixing passes through the circle tube leaching net of an end opening, air blows out foam solution from the space of filter screen, spray to fire extinguishing spray gun spray orifice by pipeline transmission again, realize the mixing of foam even foaming, adopt circle tube leaching net in limited pipeline, to increase the foaming area of filter screen, further increase the foaming effect of foam, improved fire-fighting efficiency.
The present invention adopts the pneumatic type foam proportioning unit, it is a kind of positive-pressure type foam proportioner, device utilizes a part of gas of air compressor, the passing ratio pressure regulator valve is adjusted to 0.2~0.5bar with pressure, stoste in the foam holding vessel is flow through from choke valve, enter system by triple valve after the throttling and mix with medium.Device realizes controlling the foam dope flow by the aperture of regulating choke valve, reaches mixing ratio 1%, 3%, 6% requirement such as grade.
Above-mentioned pneumatic type foam proportioning unit adopts the air compressor in the existing equipment system, set up the road gases at high pressure outlet in parallel with Air-Water medium hybrid chamber, these road gases at high pressure are pressurizeed by the foam holding vessel to sealing after the pressure regulator valve pressure regulation, foam after the pressurization realizes controlling the foam dope flow with the mixing of realization ratio by the aperture of choke valve, and mixed foam dope-aqueous mixtures is sprayed by fighting nozzle after entering Air-Water medium hybrid chamber and air mixes after the high-pressure hydraulic pump pressurization.Because firing-fighting medium does not pass through any decompression, its expulsion pressure is large, can satisfy the requirement of various complicated fire-extinguishing locations.And the present invention takes full advantage of the pneumatic power source of compressed air foam fire-extinguishing system, not newly-increased pressurized equipment, and energy savings reduces configuration, reduces cost.Said structure is compact, equally with the fine coupling of integrated fire extinguishing spray gun, is specially adapted to the extinguishing device of small-sized movable.
Above-mentioned multifunctional compressed air foam extinguishing device, the integrated compact design of spray gun of will putting out a fire is also mated with the pneumatic type foam proportioning unit, high-pressure hydraulic pump is connected with the fire extinguishing spray gun, firing-fighting medium does not pass through any decompression, its expulsion pressure is large, and the check valve of passing ratio pressure regulator valve, choke valve and hybrid chamber adjusts each medium ratio, extinguishing device conveniently moving of the present invention, and be applicable to the needs of multiple firing-fighting medium and different fire-extinguishing locations.
Description of drawings
Fig. 1 is extinguishing device syndeton schematic diagram of the present invention;
Fig. 2 is extinguishing device hybrid chamber structural section schematic diagram of the present invention;
Fig. 3 is extinguishing device foam chamber of the present invention and nozzle arrangements schematic cross-section;
Fig. 4 is extinguishing device foam chamber of the present invention and another structural section schematic diagram of nozzle;
Fig. 5 is extinguishing device foaming circle tube leaching net structural section schematic diagram of the present invention.
Among the figure, the 1st, hybrid chamber, 1a are check valves, 1b is the hybrid chamber arrival end, and 1c is the hybrid chamber port of export, the 2nd, and foam chamber, 2a is circle tube leaching net, the 3rd, and nozzle, the 4th, air compressor, the 5th, foam holding vessel, the 6th, high-pressure hydraulic pump, the 7th, choke valve, the 8th, triple valve, the 9th, water source, the 10th, valve, the 11st, proportional dump valve.
The specific embodiment
Below by embodiment the present invention is conducted further description; the present embodiment only is used for the present invention is further detailed; but can not be interpreted as limiting the scope of the invention, those skilled in the art can make some nonessential improvement and adjustment belongs to the scope of protection of the invention according to foregoing.
In conjunction with Fig. 1 to Fig. 5.
As shown in the figure, the multifunctional compressed air foam extinguishing device comprises fire extinguishing spray gun, air compressor 4 and high-pressure hydraulic pump 6, and the fire extinguishing spray gun comprises hybrid chamber 1, foam chamber 2 and the nozzle 3 that is linked in sequence; Described hybrid chamber 1 port of export 1c is communicated with foam chamber 2, arrival end 1b and high-pressure hydraulic pump 6 are communicated with by valve pipeline, and hybrid chamber 1 wall has check valve 1a and air compressor 4 to be communicated with by valve pipeline; The entrance point opening is arranged in the described foam chamber 2 and be fixed on the circle tube leaching net 2a of foam chamber 2 walls.
Air compressor 4 is gone back passing ratio pressure regulator valve 11 and is communicated with foam holding vessel 5, foam holding vessel 5 other ends are connected with triple valve 8 entrances by choke valve 7, triple valve 8 another entrances and water source 9 are connected by valve pipeline, and the outlet of triple valve 8 is communicated with the hybrid chamber 1 of fire extinguishing spray gun by high-pressure hydraulic pump 6 and valve pipeline.
Nozzle 3 spray orifice apertures can be regulated.This example adopts dismountable different pore size shower nozzle to regulate the spray orifice aperture.Circle tube leaching net 2a hole order number is 100~300 orders.
Fig. 1 is extinguishing device syndeton one schematic diagram of the present invention.As shown in the figure, extinguishing device comprises two major parts, fire extinguishing spray gun and the firing-fighting medium induction system by the valve pipeline control connection.The fire extinguishing spray gun comprises hybrid chamber 1, foam chamber 2 and the nozzle 3 that is linked in sequence, and prepares at first respectively hybrid chamber 1, foam chamber 2, nozzle 3 and small-bore shower nozzle, and each member all adopts the standard syndeton with for convenience detach and combination; The firing-fighting medium induction system adopts the pneumatic type foam proportioning unit, the arrival end 1b of hybrid chamber 1 and high-pressure hydraulic pump 6 are communicated with by valve pipeline, the arrival end of high-pressure hydraulic pump 6 is by triangle vavle 8 mixed connection water sources 9 and foam holding vessel 5, choke valve 7 control foam flows are arranged between foam holding vessel 5 and the triangle vavle 8, the proportional pressure regulator valve 11 of foam holding vessel 5 arrival ends, valve pipeline is communicated with air compressor 4, proportional dump valve 11 controls and constant compression air impose on the pressure of foam holding vessel 5, make the foam pressure of foam holding vessel 5 outputs stable in conjunction with choke valve 7 co-controllings, flow is accurately to realize and the mixing of water; The compressed air that air compressor 4 also has an outlet is communicated with check valve 1a on the hybrid chamber 1 of spray gun, and compressed air is provided during to the firing-fighting medium use that need to mix with air.The syndeton of foam holding vessel 5 can adopt removably in the extinguishing device syndeton.
Fig. 2 is extinguishing device hybrid chamber structural section schematic diagram of the present invention, hybrid chamber 1 is for being a hydrostatic column, container outlet end 1b has water-foam mixing liquid entrance also to be connected by the standard connector with foam chamber 2 by the connection of standard connector, arrival end 1c, the hydrostatic column wall is provided with check valve 1a, check valve 1a and compressed air communication, compressed air adopts high-pressure pump such as air compressor 4 to provide usually, and air compressor 4 carries compressed-air actuated pressure to be not more than 4.5MPa.
Fig. 3 is extinguishing device foam chamber of the present invention and nozzle arrangements schematic cross-section, and Fig. 4 is another structural section schematic diagram of nozzle, and Fig. 5 is extinguishing device foaming circle tube leaching net structural section schematic diagram of the present invention.Foam chamber 2 is made of the circle tube leaching net 2a that is installed in entrance point opening in the pipeline, circle tube leaching net 2a separates pipeline along the cross section, circle tube leaching net 2a openend have a step around, around step be used for fixing with pipeline, the sealing end of circle tube leaching net 2a and stack shell evenly are provided with filter opening, the external diameter of circle tube leaching net 2a is not more than the internal diameter of pipeline, during installation, with circle tube leaching net 2a openend around step embed the joint portion be fixed on pipeline, and sealing ring is set in the joint portion fixes and get final product, install very convenient; During use, pipeline is passed through in compressed air and foam solution mixing, when fluid-mixing passes through the circle tube leaching net 2a of an end opening, air blows out foam solution from the space of circle tube leaching net 2a, spray to fire extinguishing spray gun spray orifice by pipeline transmission again, realize the mixing of foam even foaming, adopt circle tube leaching net in limited pipeline, to increase the foaming area of filter screen, further increase the foaming effect of foam, improved fire-fighting efficiency.This example adopts dismountable nozzle structure, namely prepares by standard interface to be combined the small-bore shower nozzle of installation with nozzle, and the intrinsic spray orifice of nozzle aperture is set to the large aperture, on the fire extinguishing sprayer of needs small-bore ready small-bore shower nozzle is installed in nozzle and gets final product.
When needs inject high pressure current, owing to adopting and in nozzle 3 front increases little orifice shower nozzle being installed, the medium output reduces, pressure medium increases, usually pressure medium is greater than 4.5MPa, and the pressure of compressed air one end of check valve 1a is low, and air can not enter, the high-pressure extinction medium can not flow backwards yet, and the high-pressure extinction medium is realized fire extinguishing by the nozzle ejection.The small-bore shower nozzle is not installed when needs air blending agent, the Nozzle aperture is large, nozzle hole area sharply increases, hybrid chamber 1 pressure drop, check valve 1a opens, compressed air enters hybrid chamber 1 hydrostatic column to be mixed with foam solution, after foam chamber 2 foaming, realizes fire extinguishing by the ejection of nozzle 3 squit holes.
Apparatus of the present invention can realize the fire suppression applications of water, water-air, water-foam solution, water-foam solution-blending agents such as air.
When answering water to put out a fire, close air compressor 4, supply water by high-pressure hydraulic pump 6, since High Pressure, check valve 1a autoshutdown, and water under high pressure is realized fire extinguishing by hybrid chamber 1, foam chamber 2 by nozzle 3 ejections.
When using the fire extinguishing of water-air medium, open air compressor 4, close foam holding vessel 5 valve pipelines, supply water by high-pressure hydraulic pump 6, because air compressor 4 air feed, check valve 1a opens automatically, and water under high pressure mixes at hybrid chamber 1 with air, realizes fire extinguishing by foam chamber 2 by nozzle 3 ejections.
When answering water-foam solution medium to put out a fire, open air compressor 4, closing one-way valve 1a front end valve, open foam holding vessel 5 valve pipelines, supply water by high-pressure hydraulic pump 6, because air compressor 4 air feed are exported quantitative, stable foam solution by choke valve 7 after 11 pressure regulation of foam solution passing ratio pressure regulator valve in the foam holding vessel 5 under pressure, foam solution mixes with water by high-pressure hydraulic pump 6 pressurizations at triple valve 8, by realizing fire extinguishing by nozzle 3 ejections after foam chamber 2 foaming.
When answering water-foam solution-air dielectric to put out a fire, with air compressor 4, foam holding vessel 5, check valve 1a, high-pressure hydraulic pump 6 each valve pipeline are opened, and can realize fire extinguishing by regulating nozzle bore.

Claims (4)

1. a multifunctional compressed air foam extinguishing device comprises fire extinguishing spray gun, air compressor (4) and high-pressure hydraulic pump (6), it is characterized in that:
Described fire extinguishing spray gun comprises hybrid chamber (1), foam chamber (2) and the nozzle (3) that is linked in sequence; Described hybrid chamber (1) port of export (1c) is communicated with foam chamber (2), arrival end (1b) is communicated with by valve pipeline with high-pressure hydraulic pump (6), and hybrid chamber (1) wall has check valve (1a) to be communicated with by valve pipeline with air compressor (4); The entrance point opening is arranged in the described foam chamber (2) and be fixed on the circle tube leaching net (2a) of foam chamber (2) wall.
2. multifunctional compressed air foam extinguishing device according to claim 1, it is characterized in that: described air compressor (4) is gone back passing ratio pressure regulator valve (11) and is communicated with foam holding vessel (5), foam holding vessel (5) other end is connected with triple valve (8) entrance by choke valve (7), another entrance of triple valve (8) is connected by valve pipeline with the water source, and the outlet of triple valve (8) is communicated with the hybrid chamber (1) of fire extinguishing spray gun by high-pressure hydraulic pump (6) and valve pipeline.
3. multifunctional compressed air foam extinguishing device according to claim 2, it is characterized in that: described nozzle (3) spray orifice aperture can be regulated.
4. multifunctional compressed air foam extinguishing device according to claim 3, it is characterized in that: described circle tube leaching net (2a) hole order number is 100~300 orders.
CN201210580439.7A 2012-12-27 2012-12-27 Multifunctional compressed air foam fire extinguishing device Active CN103055455B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105363161A (en) * 2015-11-24 2016-03-02 中国民用航空飞行学院 Fire-fighting foam fire extinction system capable of injecting gas-liquid two-phase jet flow
CN106730509A (en) * 2016-12-16 2017-05-31 国网湖南省电力公司 Portable constant pressure water mists gas two sprays fire extinguisher
CN107485817A (en) * 2017-08-23 2017-12-19 中国矿业大学 A kind of three-phase jet fire control technology movable type experiment porch and its application process
CN107683243A (en) * 2015-06-01 2018-02-09 元基渊 Fire-fighting unmanned plane is used in fire extinguishing
CN108295402A (en) * 2017-08-22 2018-07-20 武汉迪克坦科技有限公司 A kind of electronic type froth ratio adjusting constant pressure explosion-proof Fire Fighting Pumps
CN110917530A (en) * 2019-12-09 2020-03-27 国网智能科技股份有限公司 Fire-fighting continuous operation system and method for transformer substation

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CN2894740Y (en) * 2006-02-20 2007-05-02 南京消防器材股份有限公司 Compressed air foam fire extinguishing device
CN203090319U (en) * 2012-12-27 2013-07-31 成都贝克利科技有限公司 Multifunctional compressed air foam fire extinguishment device

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Publication number Priority date Publication date Assignee Title
US4330086A (en) * 1980-04-30 1982-05-18 Duraclean International Nozzle and method for generating foam
US4805700A (en) * 1987-05-29 1989-02-21 Mine Safety Appliances Company Foam generator adjustable to produce foam having various expansion ratios
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107683243A (en) * 2015-06-01 2018-02-09 元基渊 Fire-fighting unmanned plane is used in fire extinguishing
CN107683243B (en) * 2015-06-01 2020-08-04 元基渊 Fire-fighting unmanned aerial vehicle for fire extinguishment
CN105363161A (en) * 2015-11-24 2016-03-02 中国民用航空飞行学院 Fire-fighting foam fire extinction system capable of injecting gas-liquid two-phase jet flow
CN106730509A (en) * 2016-12-16 2017-05-31 国网湖南省电力公司 Portable constant pressure water mists gas two sprays fire extinguisher
CN108295402A (en) * 2017-08-22 2018-07-20 武汉迪克坦科技有限公司 A kind of electronic type froth ratio adjusting constant pressure explosion-proof Fire Fighting Pumps
CN107485817A (en) * 2017-08-23 2017-12-19 中国矿业大学 A kind of three-phase jet fire control technology movable type experiment porch and its application process
CN110917530A (en) * 2019-12-09 2020-03-27 国网智能科技股份有限公司 Fire-fighting continuous operation system and method for transformer substation

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Effective date of registration: 20180928

Address after: 523000 No. 61 Nanling Road, Nankang village, Fenggang Town, Dongguan, Guangdong

Patentee after: Dongguan Sihuiwei Electronic Technology Co., Ltd.

Address before: 610057 29 East 1, Chenghua District two ring road, Chengdu, Sichuan.

Patentee before: Chengdu Beckly Technology Co., Ltd.