CN100584412C - Compressed air foam fire-extinguishing apparatus - Google Patents
Compressed air foam fire-extinguishing apparatus Download PDFInfo
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- CN100584412C CN100584412C CN200610038368A CN200610038368A CN100584412C CN 100584412 C CN100584412 C CN 100584412C CN 200610038368 A CN200610038368 A CN 200610038368A CN 200610038368 A CN200610038368 A CN 200610038368A CN 100584412 C CN100584412 C CN 100584412C
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Abstract
The invention discloses a pressure-air fire fighting foam device for vehicle-carrying in the fire-fighting safety facilities technique domain, which comprises the following parts: water pump, bipeltate liquid container, air compressor, wherein the air feed end of air compressor connects to admission port of bipeltate liquid container through valve controlling conduit line; the bipeltate liquid conduit line form the exit of bipeltate liquid container passing through valve controlling conduit line and pressure pipe line from water pump conduit line passing through valve controlling conduit line converge for water bipeltate mixing flow conduit line; the compressed air conduit line form air feed end of air compressor passing through valve controlling conduit line and water bipeltate mixing flow conduit line converge for compressed air bipeltate liquid conduit line connecting to fire-fighting spraying device. The invention realizes that the compressed air bipeltate mixes free, which possesses steady system pressure.
Description
Technical field
The present invention relates to a kind of fixed froth installation, especially a kind of structure that is suitable for vehicle-mounted compressed air foam fire-extinguishing apparatus belongs to security against fire facility technology field.
Background technology
Understand according to the applicant, compressed air class A foam fire extinguishing at present is all with the rotating speed of water flow signal control class A foam liquid displacement pump, with realization water and class A foam mixing to scale.In this process, by pressure equaliser compressed air is equated with the pressure of mixed liquor, make compressed air enter mixed liquor and form two phase flow.Though above prior art automaticity is higher, but complex structure, involve great expense, difficult in maintenance, no matter be automatic compressed air class A foam fire fighting truck, or compressed-air type A foam extinguishing device assembling fire fighting truck, because the expense costliness all is difficult to become the equipment that fire brigade forms fighting capacity.In addition, this type of device is because the system controlled pressure changes greatly, and water, foam, compressed-air actuated mixed proportion error are also bigger, and particularly the equalization point of gas, hydraulic coupling drifts about easily, thereby causes the injection interruption of compressed air class A foam.
Retrieval is found, the applying date is that 2004.08.26, application number are that 200420082250.6 Chinese patent discloses a kind of compressed-air type A foam extinguishing device, by water pump, foam proportioning unit, air compressor, big gun with air and liquid mixer, big gun with flow spoiler, rifle with air and liquid mixer, rifle with 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 class A foam liquid in the device; big gun with or rifle with air and liquid mixer in the air that provides by air compressor of adding; mixed liquor-compressed air the two phase flow that forms again through big gun with or rifle spray the compressed air class A foam with the flow spoiler back that stirs by fire water monitor or fire-fighting lance, put out a fire and the effect of thermal insulation protection to reach.In fact, this device provides pressure water source with water pump, class A foam liquid in foam proportioning unit (negative pressure of vacuum suction principle) and device mixes the mixed liquor of formation in proportion, big gun with or rifle with air and liquid mixer in the air that provides by air compressor of (negative pressure of vacuum suction principle) adding, form mixed liquor-compressed air two phase flow, again through big gun with or rifle stir the back by fire water monitor or fire-fighting lance injection compressed air class A foam with flow spoiler.This negative pressure of vacuum suction line of Venturi effect that utilizes is easy to generate pressure oscillation, gas, liquid is mixed bring adverse effect.Simultaneously, owing to pressure fluctuates easily, so foams mix is difficult to form the suitable scene of fire compressed-air foam in different stages than regulating inconvenience.
Summary of the invention
Primary and foremost purpose of the present invention is: at the shortcoming that above prior art exists, propose a kind of have automatic mixed function and cost economy, pressure oscillation little compressed air foam fire-extinguishing apparatus.
Further aim of the present invention is: propose a kind ofly can form the compressed air foam fire-extinguishing apparatus that is fit to scene of fire different phase compressed-air foam by simple regulation and control.
In order to reach above primary and foremost purpose, the basic technical scheme of compressed air foam fire-extinguishing apparatus of the present invention is: comprise water pump (1), foam liquid tank (8), air compressor (7), it is characterized in that: the air feed end of described air compressor (7) connects the air inlet of described foam liquid tank (8) by the valve control piper, the outlet of described foam liquid tank (8) crosses into bubble foam mixed flow pipeline with exit of pump by the pressure water line that the valve control piper constitutes by the foam solution pipeline that the valve control piper constitutes, and the air feed end of described air compressor (7) is the compressed air line by valve control piper formation and the described bubble foam mixed flow pipeline compressed-air foam pipeline that crosses and become to connect the fire-fighting Injection Facilities also.
It is power that the present invention has adopted compressed air,, can on pressure water line, directly connect for foam solution with malleation, after water, foam solution fully mix in pipeline for the foam solution pipeline, directly on for the mixed liquor pipeline, insert compressed air line, can form stable gas, liquid two-phase.Compared with prior art, this is the malleation mode confession foam solution of power to have adopted compressed air, the adverse effect that the system pressure that can avoid negative pressure feeding to cause easily fluctuates and brings adverse effect thus, particularly gas, liquid mixing are brought, and structure is more simple.
On this basis,, in described foam solution pipeline, the foam proportional control valve is housed, dried wet foam control valve is housed in described pressure water line, the compressed air require control valve is housed in described compressed air line in order to reach above-mentioned further purpose.By the regulation and control related valve, just can realize the selection of different foam form, promptly under same compressed air require state, obtain wet type foam, moderate type foam; Under the state of moderate type foam, increase compressed air require and can obtain the dry type foam.
Above technical scheme further improve be the outlet of described water pump also by another valve control piper water receiving foams mix stream pipeline, constitute flushing line, thereby make things convenient for the flushing of bubble foam mixed flow pipeline.
Further improving of above technical scheme is water tank is also connected in the outlet of described water pump by pipeline air compressor machine condenser, constitutes the air compressor machine cooling line, thereby is convenient to the cooling of air compressor machine.
In a word; device of the present invention not only can be realized the automatic mixing of compressed-air foam; and system pressure is stable; be convenient to regulate as required different foams mix ratios; thereby in same scene of fire according to the different stages; three types compressed air class A foam is provided respectively---the wet type foam that penetration is strong, the moderate type foam of most of condition of a fire of can going out, and the dry type foam that protection is provided to unburning material.In the dissimilar category-B scenes of a fire, novel compressed air category-B foam can be provided, satisfy the fire extinguishing demand.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of one embodiment of the invention.
Number in the figure: 1 is water pump, and 2 is ball valve, and 3 is overflow valve, 4 is dried wet foam control valve, 5 is Pressure gauge, and 6 is check valve, and 7 is screw air compressor, 8 is the class A foam liquid storage tank, 9 is the foam proportional control valve, and 10 is pressure-reducing valve, and 11 is flow control valve, 12 is fire-fighting lance, 13 is fire monitor, and 14 are flushing valve, and 15 is the air compressor machine condenser, 16 is water tank, 17 is the category-B foam liquid tank, and 18 is the direct solenoid clutch, and 19 for spraying compressed-air actuated fire-fighting lance, 20 is the compressed air fast interface, and 21 is special-purpose power takeoff.
In addition, short dash line is represented compressed air line, and chain-dotted line is represented the foam solution pipeline, and long dotted line is represented bubble foam mixed flow pipeline, and solid line is represented compressed-air foam pipeline and pressure water line.
The specific embodiment
Embodiment one
Present embodiment is a kind of compressed air foam fire-extinguishing apparatus that can be vehicle-mounted, as shown in Figure 1, the powered compressor air that screw air compressor 7 air feed ends provide leads to the air inlet of class A foam liquid storage tank 8 and category-B foam liquid tank 17 respectively through valve 2, foam solution is wherein extruded through another valve 2 and three road foam proportional control valves 9 from its outlet respectively, mix with press water in three road press water pipelines respectively in required ratio; Press water is herein provided by water pump 1, and the ball valve 2 on three road pressure water lines, overflow valve 3, dried wet foam control valve 4, check valve 6 cross and mix laggard entry foams mix stream pipeline; Simultaneously, the compressed air that screw air compressor 7 provides crosses with bubble foam mixed flow by pressure-reducing valve 10, ball valve 2, No. three flow control valves 11, check valve 6, further mix and form gas, liquid two-phase, be transported to fire-fighting lance 12 or fire monitor 13 respectively by the compressed-air foam liquid pipeline, be used for ejecting extinguishing.
The device of present embodiment also has three subsidiary loops: 1) water pump 1, ball valve 2, flushing valve 14, foam proportional control valve 9, check valve 6 are formed the flushing line of foam proportional control valve 9; 2) water pump 1, ball valve 2, air compressor machine condenser 15, water tank 16 are formed the air compressor machine cooling line; 3) screw air compressor 7, pressure-reducing valve 10, ball valve 2, the compressed-air actuated fire-fighting lance 19 of injection or compressed air fast interface 20 are formed to outside supply air line.
In the present embodiment, foam solution is supplied with and adopted compressed air is power, and malleation supplies the mode of foam solution, the influence of having avoided negative pressure feeding to bring adverse influence, particularly gas, liquid to bring when mixing owing to the system pressure fluctuation, and structure is more simple.From the screw air compressor that does not pass through decompression, reasonably pressure differential has guaranteed the stability that foam solution is supplied with as power source compressed air.Because malleation for foam solution, can directly connect on pressure water line for the foam solution pipeline, water, foam solution can directly insert compressed air line after fully mixing on for the mixed liquor pipeline in pipeline, form stable gas, liquid two-phase.
In addition, the characteristics of present embodiment and beneficial effect are as follows:
1), pressure water line is connected to overflow valve 3, when this overflow valve 3 had guaranteed that bigger variations takes place flow system flow, the pressure of system can remain on the operating pressure that system designs.And system pressure stable helps foam solution, compressed air mixes with water.In addition, pressure-reducing valve 10 actings in conjunction of the overflow valve of pressure water line 3 and compressed air line have guaranteed in this device that hydraulic pressure equates with compressed air pressure or air pressure is slightly larger than hydraulic pressure; Thereby guaranteed injecting-unit fire-fighting lance 12 and fire monitor 13 any switches of terminal, do not exerted an influence between can not being correlated with.
2), all be provided with check valve 6 in the pressure water line, foam solution pipeline, compressed air line, can guarantee that the separate of each loop is with stable.
3), can select multiple different ratio, make foam solution and water mixed on demand by foam proportional control valve 9.
4), can select different form of foam (dried wet foam control valve can change the discharge of pressure water line) by dried wet foam control valve 4.Under with a kind of compressed air require state,, can obtain wet type foam, moderate type foam by dried wet foam control valve; Under the state of moderate type foam, by compressed air require control valve 11, increasing compressed air require can provide the dry type foam.
5), two foam liquid tanks 8,17 have been arranged in parallel between compressed air line and the foam solution pipeline, distinguish storing compressed air class A foam liquid and compressed air category-B foam solution, can select the kind of the compressed-air foam of needs use by ball valve 2 easily.
6), the outlet ball valve 2 of closes compression air, stop to spray compressed-air foam, open the ball valve 2 of compressed air, can spray compressed air by fire-fighting lance 19 to outside air supply outlet, also can directly discharge compressed air, disperse scene of a fire smog and poisonous chemical gas with fire hose; Connect compressed air fast interface 20, open ball valve 2, can be used as the source of the gas of rescue gear, lack oxygen occasion, sufficient air is provided.
7), press water can wash the foam proportional control valve by flushing valve 14, press water can effectively cool off screw air compressor by the air compressor machine condenser.
During use, the device of present embodiment can have following multiple duty:
The press water that state 1---water pump 1 provides is in wet foam position (flow of water in the control compressed-air foam), mixes with foam solution by overflow valve 3 (guaranteeing the steady pressure of press water pipeline), dried wet foam control valve 4; Screw air compressor 7 provides compressed air, and the foam solutions in the class A foam liquid storage tank 8 are extruded through foam proportional control valves 9, and the interior press water of ratio in accordance with regulations and water supply line mixes; And compressed air mixes formation gas, liquid two-phase by pressure-reducing valve 10, flow control valve 11 with mixed liquor, and gas, liquid two-phase spray compressed air category-A wet foams through the abundant mixing in fire hose by fire-fighting lance 12, fire monitor 13;
State 4---water pump 1 provides press water, mixes with foam solution by ball valve 2, overflow valve 3 (guaranteeing the steady pressure of press water pipeline), dried wet foam control valve 4 (flow of water in the control compressed-air foam); Screw air compressor 7 provides compressed air, with the foam solution in the category-B foam liquid tank 17, extrudes through foam proportional control valve 9, and the interior press water of ratio in accordance with regulations and press water pipeline mixes; And compressed air mixes formation gas, liquid two-phase by pressure-reducing valve 10, flow control valve 11 with mixed liquor, and gas, liquid two-phase spray compressed air category-B foams through the abundant mixing in fire hose by fire-fighting lance 12, fire monitor 13.
State 5---under compressed-air foam outlet ball valve 2 closing state, open the ball valve 2 that compressed air independently exports, spray compressed air, also can directly discharge compressed air with fire hose by fire-fighting lance 19.
Experimental results show that, the device design of present embodiment is complete, can be supporting very easily on fire fighting truck, start-up control is simple, the engine power of fire fighting truck is delivered to fire pump by power takeoff, power transmission shaft, and the power of screw air compressor is to obtain by custom-designed power takeoff 21 on the power transmission shaft.On the special-purpose power takeoff 21 of air compressor machine direct solenoid clutch 18 has been installed, ball valve 2 at opening pressure water lines upper inlet, start the working speed that the fire fighting truck engine reaches air compressor machine, by the control button on the control panel, control direct solenoid clutch 18, can start air compressor machine easily, whole compressed air foam fire-extinguishing apparatus has just reached normal duty, the ball valve 2 of liquid outlet is opened, fire-fighting lance 12 and fire monitor 13 just eject various types of compressed-air foams, satisfy the needs of fire brigade scene of a fire fire extinguishing.This apparatus structure rationally, mixed proportion is accurate, simple to operate automatically, maintenance needs is lower, is particularly suitable for the actual combat demand of fire brigade.By this patent compressed air foam fire-extinguishing apparatus, can effectively improve the fire-fighting efficiency of fire brigade, very be adapted at widespread usage in the fire brigade.
Above embodiment is nonrestrictive, and the present invention can also have other embodiments.Whether no matter be used for vehicle-mountedly, all employings are equal to replaces or technical scheme that equivalent transformation forms, all drops on the protection domain of requirement of the present invention.
Claims (8)
1. compressed air foam fire-extinguishing apparatus, comprise water pump (1), foam liquid tank (8), air compressor (7), it is characterized in that: the air feed end of described air compressor (7) connects the air inlet of described foam liquid tank (8) by the valve control piper, the outlet of described foam liquid tank (8) crosses into bubble foam mixed flow pipeline with exit of pump by the pressure water line that the valve control piper constitutes by the foam solution pipeline that the valve control piper constitutes, and the air feed end of described air compressor (7) is the compressed air line by valve control piper formation and the described bubble foam mixed flow pipeline compressed-air foam liquid pipeline that crosses and become to connect the fire-fighting Injection Facilities also.
2. according to the described compressed air foam fire-extinguishing apparatus of claim 1, it is characterized in that: foam proportional control valve (9) is housed in the described foam solution pipeline, dried wet foam control valve (4) is housed in the described pressure water line, the compressed air require control valve is housed in the described compressed air line.
3. according to the described compressed air foam fire-extinguishing apparatus of claim 2, it is characterized in that: described compressed air line and foam solution pipeline junction are arranged in parallel A, B two class A foam A liquid storage tanks (8,17).
4. according to claim 2 or 3 described compressed air foam fire-extinguishing apparatus, it is characterized in that: the outlet of described water pump also by another valve control piper water receiving foams mix stream pipeline, constitutes flushing line.
5. according to the described compressed air foam fire-extinguishing apparatus of claim 4, it is characterized in that: the air compressor machine condenser (15) of water tank (16) is also connected in the outlet of described water pump by pipeline, constitute the air compressor machine cooling line.
6. according to the described compressed air foam fire-extinguishing apparatus of claim 5, it is characterized in that: described air compressor connects air interface (20) through the valve control piper, constitutes to outside supply air line.
7. according to the described compressed air foam fire-extinguishing apparatus of claim 6, it is characterized in that: described pressure water line is connected to overflow valve (3), and described compressed air line is connected to pressure-reducing valve (10).
8. according to the described compressed air foam fire-extinguishing apparatus of claim 7, it is characterized in that: be provided with check valve (6) in described pressure water line, foam solution pipeline, the compressed air line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610038368A CN100584412C (en) | 2006-02-20 | 2006-02-20 | Compressed air foam fire-extinguishing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610038368A CN100584412C (en) | 2006-02-20 | 2006-02-20 | Compressed air foam fire-extinguishing apparatus |
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| CN1806870A CN1806870A (en) | 2006-07-26 |
| CN100584412C true CN100584412C (en) | 2010-01-27 |
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Families Citing this family (9)
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| CN103331006A (en) * | 2013-07-13 | 2013-10-02 | 王晓阳 | Module combination fire-fighting system |
| CN107088281A (en) * | 2017-06-12 | 2017-08-25 | 广东瑞霖特种设备制造有限公司 | A kind of backpack is pre-mixed compressed air foam fire-extinguishing apparatus |
| 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 |
| CN111714814A (en) * | 2019-03-22 | 2020-09-29 | 中国石油化工股份有限公司 | Self-pressurizing compressed gas foam generation system |
| IT201900023679A1 (en) * | 2019-12-11 | 2021-06-11 | Iveco Magirus | CAFS SYSTEM EQUIPPED WITH AN IMPROVED AIR MANAGEMENT SYSTEM |
| CN112295148B (en) * | 2020-09-28 | 2021-12-28 | 九江中船长安消防设备有限公司 | Air foam fire extinguishing device with high stability for warships |
| CN112972942B (en) * | 2021-03-18 | 2022-06-07 | 国网安徽省电力有限公司电力科学研究院 | Cable trench fireproof plugging system |
| CN113577608B (en) * | 2021-08-06 | 2022-10-14 | 国网安徽省电力有限公司电力科学研究院 | Compressed air foam fire extinguishing device |
| CN115779310A (en) * | 2022-12-15 | 2023-03-14 | 徐工消防安全装备有限公司 | Large-traffic compressed air foam system and fire engine |
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