Used in fire-fighting compressed air foam fire extinguishing system
The utility model belongs to fire-fighting equipment and manufactures and designs the field, especially belongs to the field that manufactures and designs of compressed air foam extinguishing fire-fighting equipment, particularly a kind of used in fire-fighting compressed air foam fire extinguishing system.
Fire fighting truck is the most frequently used equipment in the existing fire-fighting equipment, and fire fighting truck has that mobility is good, power is big, adapts to advantages such as various fire-extinguishing locations, and fire fighting truck is the combination of all types of fire fighting extinguishers and removable delivery system usually.
Compressed air-froth fire extinguishing system is one of important extinguishing device in the fire fighting extinguisher.Foam fire-fighting is used in urban fire control and forest fire prevention and control in a large number, has improved the efficient of putting out a fire to save life and property first of fire.In recent years, adopt CAFS (CAFS) to replace traditional vacuum suction foaming system during forest fires are puted out a fire to save life and property more and more.The mechanism that CAFS generates foam is to feed a certain proportion of compressed air in foam mixing liquid, and bump mixes the back and produces foam.In the existing foam-generating device, foam mixing liquid is premix and is placed in pressurized tank or the non-pressure vessel.System not only needs larger container dress mixed liquor, and needs in advance stoste and water to be mixed by a certain percentage, and mixed proportion can't change, and is difficult to realize the conversion at any time of water fire extinguishing and foam fire-fighting in the process of putting out the fire, and can't take full advantage of natural water source.
Existing used in fire-fighting compressed air foam fire extinguishing also exists some application and technical problem: the servo electronics malleation foam ratio mixture control that flows automatically, cost height; Change coefficient of foaming and realize that to change the foams mix flow quantity strength of attack is influenced; When using end-equipment too many, each put out a fire end-equipment big gun or rifle can not be controlled its coefficient of foaming effectively respectively, have reduced the operation practical ability of equipment; Air and foam solution adopt impeller to mix at leading portion, and the pipeline sectional area is bigger, and foaming effect is poor.At present, be primarily aimed in the research of CAFS and application that compressed air produces and foam ratio hybrid technology is carried out.
Summary of the invention
The utility model discloses a kind of used in fire-fighting compressed air foam fire extinguishing system according to the deficiencies in the prior art.Problem to be solved in the utility model provides a kind of employing suction type ratio mixed structure, and gas-liquid mixed efficient is better, structure is more excellent, the easier compressed air foam fire extinguishing system of the terminal control of each fire extinguishing.
The utility model is achieved through the following technical solutions:
Used in fire-fighting compressed air foam fire extinguishing system comprises water supply system, foam supply system, Compressed Gas supply system and fire extinguishing jet device, it is characterized in that:
Water supply system comprises the water storage water pot, water pump and the water regulating valve that are linked in sequence by pipeline;
The foam supply system comprises the foam storage tank, y-type filter and the foam solution control magnetic valve that are linked in sequence by pipeline;
The Compressed Gas supply system comprises the Compressed Gas control valve that pneumatics pump and DLT piping are connected with the pneumatics parallel connection of pumps;
The foam solution that the water for fire extinguishing that described water supply system provides and foam supply system provide is by the premixed of suction type proportioner, and the Compressed Gas that premixed liquid and Compressed Gas supply system provide is delivered to fire extinguishing jet device after by gas-liquid cyclone mixer mixed foaming and sprays.
Further described gas-liquid cyclone mixer comprises the hybrid chamber that hollow cylinder constitutes, and an end of hybrid chamber is that the mixture export, the other end that are connected with injection apparatus are the premixed liquid liquid inlets, and the hybrid chamber sidewall is the Compressed Gas entrance; At hybrid chamber and joint portion, premixed liquid liquid inlet eddy flow baffle plate is arranged, have on the eddy flow baffle plate along the through hole of the symmetrically arranged a plurality of generation eddy flows of hybrid chamber cylinder axioversion.
Above-mentioned fire extinguishing jet device comprises that foam monitor in parallel is or/and foam gun.
Above-mentioned foam gun is connected with the gas-liquid cyclone mixer by the conveyer belt reel.
Above-mentioned water storage water pot also is connected with intake pipe by the water intaking valve group.
The utility model adopts the suction type proportioner to realize the ratio adjusting of foam solution, and at the import front end of foam monitor and foam gun the spiral-flow type air and liquid mixer is set respectively, the control of realization compressed gas flow, thereby can realize the adjusting of coefficient of foaming between 5～25 times of foam, make system architecture simpler, improved handled easily and the control function of equipment.
Each accessory in the utility model all has commercially available as suction type proportioner, y-type filter, various valves etc.
The utility model utilizes ripe suction type ratio mixed structure, reduces equipment cost; At each terminal injection apparatus the Compressed Gas control valve is set, the gas supply of independent control and regulation each minute branch road respectively, realize different coefficient of foaming, strength of attack is unaffected, when using multichannel fire extinguishing end-equipment, Compressed Gas is arranged along separate routes the air and liquid mixer that enters end, regulating the Compressed Gas pressure maintaining valve mixes with mixed liquor, in ejection after foaming, can change coefficient of foaming according to actual conditions, improve the operation practical ability; Compressed Gas mixes in cyclone mixer with mixed liquor, and the cancellation agitator arm reduces cost, and improves coefficient of foaming and the uniform and stable performance of foam.
Description of drawings
Fig. 1 is the utility model fire extinguishing system syndeton schematic diagram;
Fig. 2 is the utility model gas-liquid cyclone mixer cross section structure schematic diagram;
Fig. 3 is baffle plane structural representation in the gas-liquid cyclone mixer;
Fig. 4 is Fig. 3 A-A cross section structure schematic diagram.
Among the figure, the 1st, foam monitor, the 2nd, foam gun, the 3rd, conveyer belt reel, the 4th, valve before the big gun, the 5th, Compressed Gas control valve, the 6th, gas-liquid cyclone mixer, 6a are eddy flow baffle plates, and 6a ' is through hole, 6b is hybrid chamber, and 6d is the liquid inlet, and 6e is the gas access, 6f is mixture export, the 8th, and suction type proportioner, the 9th, water regulating valve, the 10th, spare interface, the 11st, air cleaner, the 12nd, pneumatics pump, the 13rd, foam tank, the 14th, foam solution control magnetic valve, the 15th, y-type filter, the 16th, water control valve door, the 17th, water pump, the 18th, the pump early gate, the 19th, water pot, the 20th, water intaking valve group, the 21st, intake pipe, the 23rd, long-range interfacing conveyor is formed, a be through hole axially and the angle on eddy flow baffle plate plane.
The specific embodiment
Further describe below by the utility model of embodiment; present embodiment only is used for the utility model is further detailed; but can not be interpreted as the restriction to the utility model protection domain, those skilled in the art can make the scope that some nonessential improvement and adjustment belong to the utility model protection according to above-mentioned content of the present utility model.
In conjunction with Fig. 1 and Fig. 4.
Used in fire-fighting compressed air foam fire extinguishing system comprises water supply system, foam supply system, Compressed Gas supply system and fire extinguishing jet device, and water supply system comprises water storage water pot 19, water pump 17 and the water regulating valve 9 that is linked in sequence by pipeline; The foam supply system comprises foam storage tank 13, y-type filter 15 and the foam solution control magnetic valve 14 that is linked in sequence by pipeline; The Compressed Gas supply system comprises the Compressed Gas control valve 5 that pneumatics pump 12 and DLT piping and pneumatics pump 12 are connected in parallel; The foam solution that the water for fire extinguishing that water supply system provides and foam supply system provide is by 8 premixeds of suction type proportioner, and the Compressed Gas that premixed liquid and Compressed Gas supply system provide is delivered to fire extinguishing jet device after by gas-liquid cyclone mixer 6 mixed foamings and sprays.
The utility model gas-liquid cyclone mixer 6 comprises the hybrid chamber 6b that hollow cylinder constitutes, and the end of hybrid chamber 6b is that the mixture export 6f, the other end that are connected with injection apparatus are premixed liquid liquid inlet 6d, and hybrid chamber 6b sidewall is Compressed Gas entrance 6e; At hybrid chamber 6b and 6d joint portion, premixed liquid liquid inlet eddy flow baffle plate 6a is arranged, have on the eddy flow baffle plate 6a along the through hole 6a ' of the symmetrically arranged a plurality of generation eddy flows of hybrid chamber 6b cylinder axioversion.
Fire extinguishing jet device comprises that many groups foam monitor 1 in parallel is or/and foam gun 2.
For the fire extinguishing needs foam gun 2 that adapts to different distance is connected with gas-liquid cyclone mixer 6 by conveyer belt reel 3, conveyer belt reel 3 can discharge the flexible pipe of sufficient length more to realize fire extinguishing in the coverage during use.
Be convenient water intaking on the spot, water storage water pot 19 also arranges water intaking valve group 20 and is connected with intake pipe 21.
As shown in Figure 1, when breaking out of fire, the fire extinguishing personnel open foam monitor 1, valve 4 before the foam gun 2, big gun, Compressed Gas control valve 5, water regulating valve 9, pneumatics pump 12, foam solution control magnetic valve 14, water control valve 16, water pump 17, valve 18 before the pump, manual operation foam monitor 1 spray the compressed air foam extinguishing chemical or/and foam gun 2 moves to burning things which may cause a fire disaster.Also can air be transported to other farther destinations by long-range interfacing conveyor 23.
The suction type proportioner 8 that the utility model adopts belongs to a kind of in the pressure type foam proportioner, and the pressure type foam proportioner is made up of water inlet pipe, drain pipe, mixing chamber, anemostat etc.Be cast with arrow on the mixing chamber of proportioner, expression flows to.The arrow tail end should be connected with pumping line during installation, and the arrow end should be responsible for foam and connect, and water inlet pipe, drain pipe are connected with foam liquid tank respectively.Its operation principle is: proportioner mainly utilizes venturi principle, during press water passing ratio blender, produce negative pressure differential between portion and the foam solution basin within it, make basin inner foam liquid enter proportioner by the foam solution pipe that is connected with proportioner, the orifice plate that control foam solution flow is arranged in tube connector just forms foam---the water mixed liquid of stablizing mixed proportion.
Suction type proportioner 8 operation principles that this example adopts are: after press water enters proportioner from import, most of water sprays into anemostat at a high speed through nozzle, between nozzle and anemostat, form negative pressuren zone, foam solution is inhaled into negative pressuren zone by liquid sucting port, enter anemostat simultaneously with press water, flow out from outlet; Also have the blended liquid phase that the sub-fraction press water then flows out by control valve and anemostat to mix the back from the outlet outflow.The handle of turn control valve is regulated the mixing ratio of mixed liquor.
As Fig. 2, Fig. 3 and shown in Figure 4, gas-liquid cyclone mixer 6 comprises the hybrid chamber 6b that realizes gas-liquid mixed, and hybrid chamber 6b is hollow cylinder; At hybrid chamber 6b and premixed liquid liquid-inlet 6d joint portion eddy flow baffle plate 6a is arranged, have on the eddy flow baffle plate 6a along the through hole 6a ' of the symmetrically arranged a plurality of generation eddy flows of hybrid chamber 6b cylinder axioversion.Have on this routine eddy flow baffle plate 6a along symmetrically arranged 2 the through hole 6a ' of hybrid chamber cylinder axioversion; Through hole 6a ' angle a axial and baffle plate 1a plane is 45～60 degree.