CN103055455B - Multifunctional compressed air foam fire extinguishing device - Google Patents
Multifunctional compressed air foam fire extinguishing device Download PDFInfo
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- CN103055455B CN103055455B CN201210580439.7A CN201210580439A CN103055455B CN 103055455 B CN103055455 B CN 103055455B CN 201210580439 A CN201210580439 A CN 201210580439A CN 103055455 B CN103055455 B CN 103055455B
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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
Technical field
The invention belongs to Machine Design and manufacture field, especially belong to fire-fighting machinery equipment de-sign and manufacture field, particularly a kind of multifunctional compressed air foam extinguishing device.
Background technology
Existing fire-fighting fire extinguishing needs to adopt multiple firing-fighting medium according to difference, as blending agents such as water, water-air, water-foam solution, water-foam solution-air; Different medium Corresponding matching is used to use different fire-fighting equipments.
Compressed air foam extinguishing usually makes the pressure match of compressed air and mixed liquor by pressure equaliser, make compressed air enter mixed liquor formed two phase flow, pressure equaliser structure automation degree is higher, but complex structure, involve great expense, difficult in maintenance; Such device due to the change of Systematical control pressure greatly, water, foam, compressed-air actuated mixed proportion error are also larger, and particularly the equalization point of gas, hydraulic coupling easily drifts about, thus causes the injection of compressed-air foam to interrupt.
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 provides flows through the mixed liquor that the foam solution in foam proportioning unit and device is mixed to form to scale; use at big gun or add the air provided by air compressor in rifle air and liquid mixer; mixed liquor-compressed air the two phase flow formed again through big gun with or rifle flow spoiler stir after spray compressed-air foam by fire water monitor or fire-fighting lance, put out a fire and effect of thermal insulation protection to reach.In fact, this device provides pressure water source with water pump, the mixed liquor that foam solution in foam proportioning unit and device is mixed to form in proportion, use at big gun or add the air provided by air compressor in rifle air and liquid mixer, formed mixed liquor-compressed air two phase flow, then through big gun with or rifle flow spoiler stir 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, brings adverse effect to gas, liquid mixing.Meanwhile, because pressure easily fluctuates, therefore foams mix is than regulating inconvenience, is difficult to the compressed-air foam forming the applicable scene of fire different stage.
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 Valve controlling pipeline, the foam solution pipeline that the outlet of foam liquid tank is consisted of Valve controlling pipeline crosses into water bubble mixed flow pipeline with exit of pump by the pressure water line that Valve controlling pipeline is formed, the compressed air line that the air feed end of air compressor is also consisted of Valve controlling pipeline crosses into water bubble mixed flow pipeline the compressed-air foam liquid pipeline connecing fire-fighting Injection Facilities.This device improves the structures such as foams mix, but its water pump is arranged at firing-fighting medium mixing front end, pressurizes to mixed firing-fighting medium, is unfavorable for that firing-fighting medium mixes, require very high to each equipment such as proportional control valve, the choke valve that control firing-fighting medium mixing, it is more difficult to control simultaneously.
In fire-fighting equipment, fire-fighting spray gun is the important end-equipment of fire-fighting fire extinguishing, and its spray regime mainly divides direct current water column, water smoke, water mists etc., if add foam solution in liquid, can realize the direct current water column, water smoke, water mists etc. containing foam.Common fire-fighting lance is 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 water mists, and its jet is single equally, and water consumption is large; Foam-making branch utilizes venturi or principle of negative pressure, and allow foam solution mix with air and produce foam, coefficient of foaming is low, and extinguishing effect is poor.Existing common fire-fighting lance, giant and foam-making branch can not be changed mutually easily, usually can not meet the conversion needs of multiple extinguishing method at the fire-extinguishing location that situation is changeable.
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 is to provide a kind of direct projection and the water mists injection that can meet pressure and be greater than 4.5MPa, and the hand that can spray again compressed air foam extinguishing medium on the same device lifts mobile fire-extinguishing apparatus of fighting.
The present invention is achieved through the following technical solutions:
Multifunctional compressed air foam extinguishing device, comprises fire extinguishing spray gun, air compressor and high-pressure hydraulic pump, wherein: described fire extinguishing spray gun comprises the hybrid chamber, foam chamber and the nozzle that are 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 hybrid chamber wall has check valve to be communicated with by valve pipeline with air compressor; There is entrance point opening in 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 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 water source, and the outlet of triple valve is communicated with the hybrid chamber of valve pipeline with fire extinguishing spray gun by high-pressure hydraulic pump.
Said nozzle spray orifice aperture is adjustable.
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 the blending agents such as water, water-air, water-foam solution, water-foam solution-air, each component devices is simple for structure, easy to connect be assembled on a mobile platform by promote or hand to lift conveniently moving reliable.
The present invention is by integrated to hybrid chamber, foam chamber and Nozzle combination fire extinguishing spray gun.The check valve allowing compressed air to enter is set at mixing section, utilizes check valve, and by regulating firing-fighting medium expulsion pressure automatically to change fire extinguishing spray regime, utilize circle tube leaching net structure to improve coefficient of foaming; Dismountable different pore size shower nozzle or continuous regulation mechanism is adopted to regulate spray orifice aperture, when needs inject high pressure current, adopt small-bore orifice shower nozzle, because medium output reduces, pressure medium increases, and usual pressure medium is greater than 4.5MPa, the pressure of compressed air one end of check valve is low, air can not enter, and high-pressure extinction medium also can not flow backwards, and high-pressure extinction medium is sprayed by nozzle; When needs spray Air-foam, then will adopt large aperture orifice shower nozzle, nozzle hole area sharply increases, mixing section pressure drop, one-way valve opens, compressed air enters mixing section hydrostatic column and mixes with foam solution, after the foaming of foaming section, sprayed by nozzle squit hole.Said structure is compact and mate very well with water pump, pneumatic plant and foams mix device, is specially adapted to the extinguishing device of small-sized movable.
The present invention adopts circle tube leaching net as foam device and is putting out a fire in spray gun by its integrated installation, pipeline is passed through in compressed air and foam solution mixing, when fluid-mixing passes through the circle tube leaching net of one end open, foam solution blows out by air from the space of filter screen, be transferred to the ejection of fire extinguishing spray gun spray orifice by pipeline again, realize the mixing of foam even foaming, adopt circle tube leaching net in limited pipeline, add the foaming area of filter screen, further increase the foaming effect of foam, improve fire-fighting efficiency.
The present invention adopts pneumatic type foam proportioning unit, it is a kind of positive-pressure type foam proportioner, device utilizes a part of gas of air compressor, passing ratio pressure regulator valve by pressure adjusting to 0.2 ~ 0.5bar, stoste in foam holding vessel is flow through from choke valve, is mixed with medium by the triple valve system that enters after throttling.Device realizes controlling foam dope flow by regulating the aperture of choke valve, reaches mixing ratio 1%, 3%, the requirement such as grade of 6%.
Above-mentioned pneumatic type foam proportioning unit adopts the air compressor in existing equipment system, set up road gases at high pressure in parallel with Air-Water medium hybrid chamber to export, by these road gases at high pressure by pressurizeing to the foam holding vessel closed after pressure regulator valve pressure regulation, foam after pressurization realizes controlling foam dope flow to realize ratio mixing by the aperture of choke valve, and mixed foam dope-aqueous mixtures enters after Air-Water medium hybrid chamber mixes with air and sprayed by fighting nozzle after high-pressure hydraulic pump pressurization.Because firing-fighting medium is not through any decompression, its expulsion pressure is large, can meet the requirement of various complicated fire-extinguishing location.And the present invention makes full use of the pneumatic power source of compressed air foam fire-extinguishing system, not newly-increased pressurized equipment, economize energy, reduces configuration, reduces costs.Said structure is compact, mates very well equally, be specially adapted to the extinguishing device of small-sized movable with integrated fire extinguishing spray gun.
Above-mentioned multifunctional compressed air foam extinguishing device, the integrated compact design of spray gun of putting out a fire also is mated with pneumatic type foam proportioning unit, high-pressure hydraulic pump is connected with fire extinguishing spray gun, firing-fighting medium is not 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 location.
Accompanying drawing explanation
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 of the present invention foaming circle tube leaching net structural section schematic diagram.
In figure, 1 is hybrid chamber, and 1a is check valve, 1b is hybrid chamber arrival end, and 1c is the hybrid chamber port of export, and 2 is foam chambers, 2a is circle tube leaching net, and 3 is nozzles, and 4 is air compressors, 5 is foam holding vessels, and 6 is high-pressure hydraulic pumps, and 7 is choke valves, 8 is triple valves, 9 is water sources, and 10 is valves, and 11 is proportional dump valves.
Detailed description of the invention
Below by embodiment, the present invention is conducted further description; the present embodiment is only for being further detailed the present invention; but can not be interpreted as limiting the scope of the invention, those skilled in the art can make some nonessential improvement according to foregoing and adjustment belongs to the scope of protection of the invention.
Composition graphs 1 to Fig. 5.
As shown in the figure, multifunctional compressed air foam extinguishing device, comprises fire extinguishing spray gun, air compressor 4 and high-pressure hydraulic pump 6, and fire extinguishing spray gun comprises the hybrid chamber 1, foam chamber 2 and the nozzle 3 that are 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; There is entrance point opening in described foam chamber 2 and be fixed on the circle tube leaching net 2a of foam chamber 2 wall.
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 water source 9, and the outlet of triple valve 8 is communicated with the hybrid chamber 1 of fire extinguishing spray gun with valve pipeline by high-pressure hydraulic pump 6.
Nozzle 3 spray orifice aperture is adjustable.This example adopts dismountable different pore size shower nozzle to regulate 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 valve pipeline control connection.Fire extinguishing spray gun comprises the hybrid chamber 1, foam chamber 2 and the nozzle 3 that are linked in sequence, prepares hybrid chamber 1, foam chamber 2, nozzle 3 and small-bore shower nozzle first respectively, and each component all adopts standard connections with for convenience detach and combination, firing-fighting medium induction system adopts pneumatic type foam proportioning unit, the arrival end 1b of hybrid chamber 1 is communicated with by valve pipeline with high-pressure hydraulic pump 6, the arrival end of high-pressure hydraulic pump 6 is by triangle vavle 8 mixed connection water source 9 and foam holding vessel 5, choke valve 7 is had to control foam flow between foam holding vessel 5 and triangle vavle 8, the proportional pressure regulator valve 11 of foam holding vessel 5 arrival end, valve pipeline is communicated with air compressor 4, proportional dump valve 11 control and constant compression air are applied to the pressure of foam holding vessel 5, foam pressure foam holding vessel 5 being exported in conjunction with choke valve 7 co-controlling is stablized, flow is accurately to realize and the mixing of water, air compressor 4 also has the compressed air of an outlet to be communicated with check valve 1a on the hybrid chamber 1 of spray gun, provides compressed air when using to needing the firing-fighting medium mixed with air.In extinguishing device syndeton, the syndeton of foam holding vessel 5 can adopt removably.
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 is communicated with by standard connector with foam chamber 2, arrival end 1c has water-and foam mixing liquid entrance is also connected by standard connector, 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 of the present invention foaming circle tube leaching net structural section schematic diagram.Foam chamber 2 is made up of the circle tube leaching net 2a being arranged on entrance point opening in pipeline, pipeline is separated along cross section by circle tube leaching net 2a, circle tube leaching net 2a openend have a step around, around step to be used for pipeline fixing, sealing end and the stack shell of circle tube leaching net 2a are evenly provided with filter opening, the external diameter of circle tube leaching net 2a is not more than the internal diameter of pipeline, during installation, by circle tube leaching net 2a openend around step embed and be fixed on the joint portion of pipeline, and sealing ring is set in joint portion fixes, 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 one end open, foam solution blows out by air from the space of circle tube leaching net 2a, be transferred to the ejection of fire extinguishing spray gun spray orifice by pipeline again, realize the mixing of foam even foaming, adopt circle tube leaching net in limited pipeline, add the foaming area of filter screen, further increase the foaming effect of foam, improve fire-fighting efficiency.This example adopts dismountable nozzle structure, and namely prepare and be combined by standard interface the small-bore shower nozzle installed with nozzle, the intrinsic spray orifice aperture of nozzle is set to large aperture, and ready small-bore shower nozzle is arranged on nozzle by needs small-bore fire extinguishing sprayer.
When needs inject high pressure current, before nozzle 3, the little orifice shower nozzle of installation is increased owing to adopting, medium output reduces, pressure medium increases, usual 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, high-pressure extinction medium also can not flow backwards, and high-pressure extinction medium realizes fire extinguishing by nozzle ejection.When needs air blending agent, small-bore shower nozzle is not installed, 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 and mixes with foam solution, after being foamed, is sprayed realize fire extinguishing by nozzle 3 squit hole by foam chamber 2.
Apparatus of the present invention can realize the fire suppression applications of the blending agents such as water, water-air, water-foam solution, water-foam solution-air.
When applying water and putting out a fire, close air compressor 4, supplied water by high-pressure hydraulic pump 6, due to High Pressure, check valve 1a closes automatically, and water under high pressure sprays realization fire extinguishing by hybrid chamber 1, foam chamber 2 by nozzle 3.
When applying the fire extinguishing of water-air medium, opening air compressor 4, closing foam holding vessel 5 valve pipeline, supplied water by high-pressure hydraulic pump 6, due to air compressor 4 air feed, check valve 1a opens automatically, and water under high pressure mixes at hybrid chamber 1 with air, to be sprayed by nozzle 3 by foam chamber 2 and realize putting out a fire.
When applying water-foam solution medium fire extinguishing, open air compressor 4, closing one-way valve 1a front end valve, open foam holding vessel 5 valve pipeline, supplied water by high-pressure hydraulic pump 6, due to air compressor 4 air feed, in foam holding vessel 5, after the pressure regulation of foam solution passing ratio pressure regulator valve 11, export quantitative, stable foam solution by choke valve 7 under pressure, foam solution pressurizes through high-pressure hydraulic pump 6 after triple valve 8 mixes with water, is sprayed realize fire extinguishing by foam chamber 2 after being foamed by nozzle 3.
When applying water-foam solution-air dielectric fire extinguishing, by air compressor 4, each valve pipeline of foam holding vessel 5, check valve 1a, high-pressure hydraulic pump 6 is 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 the hybrid chamber (1), foam chamber (2) and the nozzle (3) that are 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) is that its wall of hydrostatic column has check valve (1a) to be communicated with by valve pipeline with air compressor (4); There is entrance point opening in 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), triple valve (8) another entrance is connected by valve pipeline with water source, and the outlet of triple valve (8) is communicated with the hybrid chamber (1) of valve pipeline with fire extinguishing spray gun by high-pressure hydraulic pump (6).
3. multifunctional compressed air foam extinguishing device according to claim 2, is characterized in that: described nozzle (3) spray orifice aperture is adjustable.
4. multifunctional compressed air foam extinguishing device according to claim 3, is characterized in that: described circle tube leaching net (2a) hole order number is 100 ~ 300 orders.
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| CN201210580439.7A CN103055455B (en) | 2012-12-27 | 2012-12-27 | Multifunctional compressed air foam fire extinguishing device |
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| CN201210580439.7A CN103055455B (en) | 2012-12-27 | 2012-12-27 | Multifunctional compressed air foam fire extinguishing device |
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| CN103055455B true CN103055455B (en) | 2015-01-28 |
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| KR101566341B1 (en) * | 2015-06-01 | 2015-11-05 | 원기연 | A multi- purpose fire fighting drone |
| 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 |
| CN106730509B (en) * | 2016-12-16 | 2017-12-01 | 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 |
| CN107485817B (en) * | 2017-08-23 | 2020-04-28 | 中国矿业大学 | Three-phase jet fire-fighting technology mobile experimental platform and application method thereof |
| CN110917530B (en) * | 2019-12-09 | 2021-06-29 | 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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| US4330086A (en) * | 1980-04-30 | 1982-05-18 | Duraclean International | Nozzle and method for generating foam |
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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. |