CN114404847A - B-class air bubble foam high-spraying fire extinguishing device - Google Patents
B-class air bubble foam high-spraying fire extinguishing device Download PDFInfo
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- CN114404847A CN114404847A CN202111613677.9A CN202111613677A CN114404847A CN 114404847 A CN114404847 A CN 114404847A CN 202111613677 A CN202111613677 A CN 202111613677A CN 114404847 A CN114404847 A CN 114404847A
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- 239000006260 foam Substances 0.000 title claims abstract description 215
- 238000005507 spraying Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
Abstract
The invention provides a B-type air bubble foam high-spraying fire extinguishing device which comprises carrier equipment, a rotary table, a water system, a foam system, a screw type compressed air system, a lifting system and a fire monitor, wherein the rotary table, the water system, the foam system, the screw type compressed air system, the lifting system and the fire monitor are arranged on the carrier equipment; the water system, the foam system and the screw type compressed air system are respectively arranged on a chassis of the carrier equipment, the rotary table is arranged at the upper part of the carrier equipment, meanwhile, the rotary table is provided with a lifting system, and the tail end of the lifting system is provided with a fire monitor; wherein, the water in the water system and the foam in the foam system are mixed at a pipeline which is transported to the lower part of the rotary table to form water-foam mixed liquid; compressed air of the screw type compressed air system and the water-foam mixed liquid are conveyed to a phase pipeline at the upper part of the rotary table to be mixed and are sprayed out through the lifting system and the fire monitor. The invention has the advantages that: the flow is big, the range is far away, fire extinguishing efficiency is high, and can cover from top to bottom and put out a fire, satisfies large-scale petrochemical industry conflagration demand of putting out a fire.
Description
Technical Field
The invention relates to the technical field of fire-fighting equipment, in particular to a B-type air bubble foam high-spraying fire extinguishing device.
Background
The flammable and combustible substances related to petrochemical enterprises are various in types, large in quantity and high in fire risk, once a fire disaster occurs, the combustion speed is high, the fire behavior is rapidly developed, a large-area three-dimensional fire disaster is easily formed, and the difficulty in fighting the fire disaster is high.
At present, fire fighting equipment for fighting large petrochemical fire mainly comprises a lifting jet fire fighting truck, a B-type foam fire fighting truck and an A-type foam fire fighting truck. Wherein, about elevating the fire engine that sprays: although the application of the large-flow ten-thousand-liter pump gradually improves the jet flow of the elevating jet fire truck, and the large-flow remote water supply truck can also solve the problem of an external water supply source, the foam system of the existing elevating jet fire truck has low foaming multiple, so that the single large-scale fire foam consumption is very large, and the unit water quantity fire extinguishing efficiency is low. Regarding class B foam fire trucks: without the lifting arm, the foam cannot fully cover the fire from top to bottom due to insufficient height of the foam. For a class a foam fire truck: the flow is small, the range is only 20-30m, and meanwhile, the fire extinguishing radius is small due to insufficient shooting height without a lifting arm, so that the requirement of large-scale fire disasters cannot be met.
Therefore, the fire extinguishing and anti-reburning effects of the conventional fire fighting equipment are not good when the conventional fire fighting equipment is used for fighting a large petrochemical fire, and a novel fire extinguishing device is urgently needed to be designed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a B-type air bubble foam high-spraying fire extinguishing device which has large flow, long range and high fire extinguishing efficiency and can cover from top to bottom to extinguish fire.
The invention adopts the following technical scheme to solve the technical problems:
a B-type air bubble foam high-spraying fire extinguishing device comprises carrier equipment, a rotary table, a water system, a foam system, a screw type compressed air system, a lifting system and a fire monitor, wherein the rotary table, the water system, the foam system, the screw type compressed air system, the lifting system and the fire monitor are arranged on the carrier equipment; the water system, the foam system and the screw type compressed air system are respectively arranged on a chassis of the carrier equipment, the rotary table is arranged at the upper part of the carrier equipment, meanwhile, the rotary table is provided with a lifting system, and the tail end of the lifting system is provided with a fire monitor; wherein, the water in the water system and the foam in the foam system are respectively transported to corresponding pipelines at the lower part of the rotary table to be mixed to form water-foam mixed liquid; and the compressed air of the screw type compressed air system and the water-foam mixed liquid are respectively conveyed to corresponding pipelines at the upper part of the rotary table to be mixed and are sprayed out through the lifting system and the fire monitor in sequence.
As one of preferable modes of the present invention, the carrier facility is a fixed carrier or a mobile car; when the carrier equipment is a movable automobile, the water system, the foam system and the screw type compressed air system are all arranged on an automobile chassis.
As one of the preferable modes of the invention, the water system comprises a water tank, a water pump and a first transportation pipeline; the water tank is arranged in the middle of the carrier equipment, and water in the water tank enters the water pump through the water inlet valve and forms pressure water; and a first flowmeter, a first pressure sensor, a cannon valve and a first one-way valve are sequentially arranged on a pump-out pipeline of the pressure water.
In a preferred embodiment of the present invention, the water pump is driven by a transmission shaft of the engine and supplies power; meanwhile, an external water suction port is also arranged on a pipeline between the water pump and the water tank; when the water in the water tank is used up, the water pump can be connected with an external device through the external water suction port to suck a water source.
As one of the preferable modes of the invention, the foam system comprises a foam tank, a foam pump and a second transportation pipeline; the foam tank is arranged in the middle of the carrier equipment, and foam in the foam tank enters the foam pump through the foam valve and forms pressure foam; and a second flowmeter, a second pressure sensor, a foam liquid supply valve and a second one-way valve are sequentially arranged on the pumping-out pipeline of the pressure foam.
In a preferred embodiment of the present invention, a foam sucking valve is further disposed on a pipeline between the foam valve and the foam pump; when the foam valve is closed, the foam pump is connected with an external device to suck foam by opening the foam external suction valve;
a foam reinjection pipeline is also connected to the pipeline between the foam valve and the foam liquid supply valve, and a foam external supply valve and a foam liquid injection valve are arranged on the foam reinjection pipeline; when the foam valve is opened and the foam injection valve is closed, the foam in the foam tank is transferred to other fire-fighting equipment for use through the foam external supply valve;
in addition, the inlet and outlet of the foam pump are also provided with safety valves.
As one preferable mode of the present invention, the screw type compressed air system includes a screw type air compressor and a third transport pipeline; the screw air compressor is arranged at the rear part of the carrier equipment and is driven by a diesel engine; compressed air in the screw air compressor is transported in the third transportation pipeline, and a third flowmeter, a third pressure sensor, an adjusting valve and a third one-way valve are sequentially arranged on the third transportation pipeline along an air transportation path; meanwhile, the third conveying pipeline is also provided with a deflation valve for emptying the pipeline.
In a preferred embodiment of the present invention, the water in the water system and the foam in the foam system are mixed before the central revolving body to form a water-foam mixture; after passing through a central revolving body, the water-foam mixed liquid is mixed with compressed air generated by the screw type compressed air system through a gas-liquid mixer and then is sprayed out of a fire monitor; the gas-liquid mixer is arranged on the lifting system.
In a preferred embodiment of the present invention, the lifting system includes a two-piece folding arm; one end of the two-section type folding arm is rotatably connected with the mounting seat on the rotary table, and the other end of the two-section type folding arm is connected with the fire monitor; the two-section type folding arm is driven by a hydraulic structure, and the fire monitor is driven by the hydraulic structure to perform pitching motion relative to the carrier equipment; meanwhile, under the rotation of the rotary table, the two-section type folding arm drives the fire monitor to rotate relative to the carrier equipment.
In a preferred embodiment of the present invention, the fire extinguishing apparatus further includes a PLC control system; the PLC control system monitors and regulates the proportion of water and foam in real time, and the specific regulation mode is as follows: the PLC of the PLC control system obtains water flow through a first flow meter of a water system, obtains required foam flow after proportional calculation, and further adjusts the rotating speed of the foam pump according to the numerical value of a second flow meter of the foam system to obtain target foam flow.
Compared with the prior art, the invention has the advantages that:
(1) the water system has large flow and can effectively reduce the temperature; moreover, high-pressure large-flow compressed air generated by the screw type compressed air system and a water-foam mixed solution are mixed by a gas-liquid mixer, so that the foaming multiple of foam can be effectively improved, the foam can penetrate through the upper part of flame, and a stable protective film is formed on the ignition surface, so that the aim of extinguishing fire is fulfilled;
(2) the two sections of folding arms are configured as a lifting system, the maximum lifting height reaches 22 meters, and the fire can be effectively covered and extinguished from top to bottom when dealing with a fire disaster of a petrochemical oil storage tank, so that the shooting height and the shooting range of foam are effectively improved, and the problems that a conventional fire fighting vehicle is small in shooting range and fire extinguishing radius and cannot meet the fire suppression requirement of the petrochemical industry are solved;
(3) according to the invention, water and foam are mixed in a pipeline at the lower part of the rotary table, compressed air is mixed in a pipeline at the upper part of the rotary table, and meanwhile, the gas-liquid mixer is arranged on the lifting system, so that the problem that air cannot be effectively injected due to high pressure of water and foam liquid in the pipeline can be effectively avoided;
(4) the invention adopts a form that a water system, a foam system and a screw type compressed air system are arranged in one carrier device, and a control unit adopts a PLC control system, so that the whole device can be operated by only one person, thereby effectively saving the configuration cost of equipment personnel; meanwhile, the device is a B-type air bubble foam high-spraying fire extinguishing device, and conventional B-type foam is adopted, so that the use cost is further reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a B-type air bubble high-spraying fire extinguishing apparatus in example 1;
FIG. 2 is a schematic diagram of the piping arrangement between the water system, the foam system, the screw compressed air system, the elevating system and the fire monitor of FIG. 1.
In the figure: 1 is a mobile automobile, 11 is an automobile chassis, 12 is a cab, 2 is a turntable, 21 is a central revolving body, 3 is a water system, 31 is a water tank, 32 is a water pump, 33 is a first transportation pipeline, 34 is a rear water intake valve, 35 is a first flow meter, 36 is a first pressure sensor, 37 is a cannon valve, 38 is a first one-way valve, 39 is an external water intake port, 4 is a foam system, 41 is a foam tank, 42 is a foam pump, 421 is a safety valve, 43 is a second transportation pipeline, 431 is a foam external suction valve, 432 is a foam external supply valve, 433 is a foam liquid injection valve, 434 is a foam cleaning valve, 44 is a foam valve, 45 is a second flow meter, 46 is a second pressure sensor, 47 is a foam liquid supply valve, 48 is a second one-way valve, 5 is a screw type compressed air system, 51 is a screw type air compressor, 511 is a diesel engine, 52 is a third transportation pipeline, 53 is a third flow meter, 54 is a third pressure sensor, 55 is a regulating valve, 56 is a third one-way valve, 57 is a release valve, 6 is a lifting system, 61 is a two-section type folding arm, 62 is a gas-liquid mixer, 7 is a fire monitor, and 8 is a PLC control system.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
As shown in fig. 1-2, the class B air bubble foam high-spraying fire extinguishing apparatus of the present embodiment includes a mobile vehicle 1, and a turntable 2, a water system 3, a foam system 4, a screw type compressed air system 5, a lifting system 6 and a fire monitor 7 arranged on the mobile vehicle 1. The water system 3, the foam system 4 and the screw type compressed air system 5 are respectively arranged on an automobile chassis 11 of the movable automobile 1, the rotary table 2 is arranged on the upper portion of the movable automobile 1, meanwhile, the rotary table 2 is provided with a lifting system 6, and the tail end of the lifting system 6 is provided with a fire monitor 7. Wherein, the water in the water system 3 and the foam in the foam system 4 are respectively transported to corresponding pipelines at the lower part of the rotary table 2 to be mixed to form water-foam mixed liquid; compressed air and water-foam mixed liquid of the screw type compressed air system 5 are respectively conveyed to corresponding pipelines at the upper part of the rotary table 2 to be mixed and are sprayed out through the lifting system 6 and the fire monitor 7 in sequence.
Specifically, in the present embodiment, the water system 3 includes a water tank 31, a water pump 32, and a first transport pipe 33 for water transport; the water tank 31 is arranged in the middle of the mobile automobile 1, and water in the water tank 31 enters the water pump 32 through the rear water inlet valve 34 to form pressure water; the pumping pipeline of the pressure water is sequentially provided with a first flowmeter 35, a first pressure sensor 36, a cannon valve 37 and a first one-way valve 38. Wherein, first flowmeter 35 is used for measuring real-time discharge, and first pressure sensor 36 is used for measuring the play water pressure of real-time water pump 32, and first check valve 38 can avoid lifting system 6 and lifting to the damage of a certain height, water hammer effect to water pump 32 impeller.
Further, the water pump 32 is driven by the engine of the vehicle chassis 11 through a propeller shaft, and provides power. Meanwhile, an outer water suction port 39 is arranged on a pipeline between the water pump 32 and the water tank 31; when the water in the water tank 31 is used up, the water pump 32 may be connected to an external device through the external water intake port 39 to suck in the water.
Specifically, in the present embodiment, the foam system 4 includes a foam tank 41, a foam pump 42, and a second transportation pipe 43 for foam transportation; the foam tank 41 is arranged in the middle of the mobile automobile 1, and foam in the foam tank 41 enters the foam pump 42 through the foam valve 44 and forms pressure foam; the pumping pipeline of the pressure foam is sequentially provided with a second flow meter 45, a second pressure sensor 46, a foam liquid supply valve 47 and a second one-way valve 48. The second flow meter 45 is used for measuring the real-time foam flow, the second pressure sensor 46 is used for measuring the pressure of the real-time foam pump, the foam liquid supply valve 47 is used for controlling the foam liquid supply to be opened and closed at any time, and the second one-way valve 48 can effectively prevent the pressure water from flowing backwards to the foam tank 41 to cause the foam in the foam tank 41 to lose efficacy.
Further, a pipeline between the foam valve 44 and the foam pump 42 is also provided with a foam sucking valve 431; when the foam valve 44 is closed, the foam pump 42 sucks the foam by opening the foam sucking valve 431 to connect an external device.
Furthermore, a foam reinjection pipeline is connected to the pipeline between the foam valve 44 and the foam liquid supply valve 47, and a foam external supply valve 432 and a foam liquid injection valve 433 are arranged on the foam reinjection pipeline. When the foam valve 44 is opened and the foam injection valve 433 is closed, the foam in the foam tank 41 is transferred to other fire fighting equipment through the foam external supply valve 432.
Furthermore, a foam cleaning valve 434 is arranged on a pipeline between the foam valve 44 and the foam pump 42, the foam cleaning valve 434 is connected with a cleaning pipeline, and the other end of the cleaning pipeline is communicated with the water tank 31; after the foam system 4 is used, the foam cleaning valve 434 may be opened, the foam valve 44 may be closed, the foam pump 42 may be operated, and the foam external supply valve 432 may be opened, so that the foam system 4 may be cleaned.
Further, the inlet and outlet of the foam pump 42 are also provided with a safety valve 421; the safety valve 421 ensures that the foam pump 42 operates within a safe pressure range.
Specifically, in the present embodiment, the screw compressed air system 5 includes a screw air compressor 51 and a third transport pipeline 52; the screw air compressor 51 is arranged at the rear part of the mobile automobile 1 and is driven by a diesel engine 511, and high-pressure air of 45 cubic/minute (1.3Mpa) can be provided to the maximum; the compressed air in the screw air compressor 51 is transported in a third transport line 52, and a third flow meter 53, a third pressure sensor 54, a regulating valve 55, and a third check valve 56 are provided in this order on the third transport line 52 along the air transport path. The third flow meter 53 is used for detecting air flow in real time, the third pressure sensor 54 is used for detecting air pressure, the regulating valve 55 is used for regulating air outlet pressure, and the third one-way valve 56 can effectively prevent pressure water from flowing backwards into the air compressor.
Further, a release valve 57 is further disposed on the third transportation pipeline 52; when the whole device does not need air and the air compressor runs, the pipeline is emptied, so that the air compressor is prevented from being in a pressure-building state for a long time.
Further, the water in the water system 3 and the foam in the foam system 4 are mixed before the central revolving body 21 to form a water-foam mixed solution; after passing through the central revolving body 21, the water-foam mixed liquid is mixed with compressed air generated by the screw type compressed air system 5 through the gas-liquid mixer 62 and then is sprayed out of the fire monitor 7, wherein the central revolving body 21 is arranged at the lower part of the rotary table 2 and is fixedly connected with the rotary table; the gas-liquid mixer 62 is arranged on the elevation system 6.
In particular, in the present embodiment, the lifting system 6 comprises a two-segment folding arm 61. The two-section folding arm 61, the turntable 2, is forward and arranged immediately behind the cab 12; meanwhile, one end of the two-section type folding arm 61 is rotatably connected with the mounting seat on the rotary table 2, and the other end thereof is connected with the fire monitor 7. The two-section type folding arm 61 is driven by a hydraulic structure, and drives the fire monitor 7 to do pitching motion relative to the movable automobile 1 under the driving of the hydraulic structure; meanwhile, under the rotation of the turntable 2, the two-section type folding arm 61 drives the fire monitor 7 to rotate relative to the mobile automobile 1.
Specifically, in this embodiment, the fire extinguishing apparatus further includes a PLC control system 8. The PLC control system 8 monitors and regulates the proportion of water and foam to be 1% -10% in real time, and the regulation mode is as follows: the PLC of the PLC control system 8 obtains water flow through the first flow meter 35 of the water system 3, obtains the required foam flow after proportion calculation, and further adjusts the rotating speed of the foam pump 42 according to the numerical value of the second flow meter 45 of the foam system 4 to obtain the target foam flow.
Meanwhile, the screw air compressor 51 can provide compressed air with two flows, and the control principle of the corresponding PLC control system 8 is as follows: after the PLC measures the air flow discharged by the screw air compressor 51, the rotating speed of the engine of the automobile chassis 11 is controlled in real time by setting the air-liquid ratio, so that the aim of controlling the water flow and the foam flow is fulfilled.
When the foam is wetted, e.g. according to a screw air compressor 51 with a minimum flow of 34m3At/min, the matching water pump 32 flow (i.e. the final monitor 7 discharge flow) is shown in table 1.
TABLE 1 screw air compressor flow of 34m3Water pump flow matching meter in/min
When the foam is dried, the screw air compressor 51 is driven to flow at a maximum flow rate of 45m3When the output is given at/min (1.3Mpa), the flow of the water pump 32 (namely the final spraying flow of the fire monitor 7) is calculated according to different gas-liquid ratios, and the calculation table is shown in a table 2.
TABLE 2 screw air compressor flow 45m3Water pump flow matching meter in/min
In addition, it should be noted that, in order to better match the operation of the device of the present embodiment, in the present embodiment:
the water pump 32 adopts a large-flow fire pump, the working pressure is 1.4Mpa, and the flow is as follows: 170L/min;
the foam pump 42 employs a positive displacement pump, such as a gear pump or the like, and a flow rate: 770L/min, working pressure: 1.5 Mpa;
the volumes of the water tank 31 and the foam tank 41 are respectively 5 tons and 6 tons;
the gun head of the fire monitor 7 adopts a cone-shaped design, and the inner diameter D of the tail end of a cone tube meets the formula:
example 2
The class-B air bubble foam high-spraying fire extinguishing device of the embodiment has basically the same structure as the fire extinguishing device of the embodiment 1, and mainly has the following difference: the carrier apparatus of this embodiment is a stationary carrier. When adopting fixed carrier, this embodiment extinguishing device can arrange respectively in petrochemical enterprise's large-scale risk equipment one side, and is reserve at any time, need not to remove the conversion place.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A B-type air bubble foam high-spraying fire extinguishing device is characterized by comprising carrier equipment, a rotary table, a water system, a foam system, a screw type compressed air system, a lifting system and a fire monitor, wherein the rotary table, the water system, the foam system, the screw type compressed air system, the lifting system and the fire monitor are arranged on the carrier equipment; the water system, the foam system and the screw type compressed air system are respectively arranged on a chassis of the carrier equipment, the rotary table is arranged at the upper part of the carrier equipment, meanwhile, the rotary table is provided with a lifting system, and the tail end of the lifting system is provided with a fire monitor; wherein, the water in the water system and the foam in the foam system are respectively transported to corresponding pipelines at the lower part of the rotary table to be mixed to form water-foam mixed liquid; and the compressed air of the screw type compressed air system and the water-foam mixed liquid are respectively conveyed to corresponding pipelines at the upper part of the rotary table to be mixed and are sprayed out through the lifting system and the fire monitor in sequence.
2. The class B air-bubble foam high-spray fire extinguishing apparatus according to claim 1, wherein the carrier device is a stationary carrier or a mobile car; when the carrier equipment is a movable automobile, the water system, the foam system and the screw type compressed air system are all arranged on an automobile chassis.
3. The class B air-bubble foam high-spray fire extinguishing apparatus according to claim 1, wherein the water system comprises a water tank, a water pump and a first transportation pipeline; the water tank is arranged in the middle of the carrier equipment, and water in the water tank enters the water pump through the water inlet valve and forms pressure water; and a first flowmeter, a first pressure sensor, a cannon valve and a first one-way valve are sequentially arranged on a pump-out pipeline of the pressure water.
4. The class B air-bubble foam high-spray fire extinguishing device according to claim 3, wherein the water pump is driven by a transmission shaft of an engine and provides power; meanwhile, an external water suction port is also arranged on a pipeline between the water pump and the water tank; when the water in the water tank is used up, the water pump can be connected with an external device through the external water suction port to suck a water source.
5. The class B air-bubble foam high-spray fire extinguishing apparatus according to claim 1, wherein the foam system comprises a foam tank, a foam pump and a second transportation pipeline; the foam tank is arranged in the middle of the carrier equipment, and foam in the foam tank enters the foam pump through the foam valve and forms pressure foam; and a second flowmeter, a second pressure sensor, a foam liquid supply valve and a second one-way valve are sequentially arranged on the pumping-out pipeline of the pressure foam.
6. The class-B air foam high-spraying fire extinguishing device according to claim 5, wherein a foam external suction valve is further arranged on a pipeline between the foam valve and the foam pump; when the foam valve is closed, the foam pump is connected with an external device to suck foam by opening the foam external suction valve;
a foam reinjection pipeline is also connected to the pipeline between the foam valve and the foam liquid supply valve, and a foam external supply valve and a foam liquid injection valve are arranged on the foam reinjection pipeline; when the foam valve is opened and the foam injection valve is closed, the foam in the foam tank is transferred to other fire-fighting equipment for use through the foam external supply valve;
in addition, the inlet and outlet of the foam pump are also provided with safety valves.
7. The class B air-bubble foam high-spray fire extinguishing device according to claim 1, wherein the screw compressed air system comprises a screw air compressor and a third transport pipeline; the screw air compressor is arranged at the rear part of the carrier equipment and is driven by a diesel engine; compressed air in the screw air compressor is transported in the third transportation pipeline, and a third flowmeter, a third pressure sensor, an adjusting valve and a third one-way valve are sequentially arranged on the third transportation pipeline along an air transportation path; meanwhile, the third conveying pipeline is also provided with a deflation valve for emptying the pipeline.
8. The class B air-bubble foam high-spraying fire extinguishing apparatus according to claim 1, wherein the water in the water system and the foam in the foam system are mixed before the central revolving body to form a water-foam mixed solution; after passing through a central revolving body, the water-foam mixed liquid is mixed with compressed air generated by the screw type compressed air system through a gas-liquid mixer and then is sprayed out of a fire monitor; the gas-liquid mixer is arranged on the lifting system.
9. The class B air-bubble foam high-spray fire extinguishing apparatus according to claim 1, wherein the lifting system comprises a two-section folding arm; one end of the two-section type folding arm is rotatably connected with the mounting seat on the rotary table, and the other end of the two-section type folding arm is connected with the fire monitor; the two-section type folding arm is driven by a hydraulic structure, and the fire monitor is driven by the hydraulic structure to perform pitching motion relative to the carrier equipment; meanwhile, under the rotation of the rotary table, the two-section type folding arm drives the fire monitor to rotate relative to the carrier equipment.
10. The class-B air foam high-pressure jet fire extinguishing device according to any one of claims 1 to 9, wherein the fire extinguishing device further comprises a PLC control system; the PLC control system monitors and regulates the proportion of water and foam in real time, and the specific regulation mode is as follows: the PLC of the PLC control system obtains water flow through a first flow meter of a water system, obtains required foam flow after proportional calculation, and further adjusts the rotating speed of the foam pump according to the numerical value of a second flow meter of the foam system to obtain target foam flow.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814312A (en) * | 2022-12-14 | 2023-03-21 | 徐工消防安全装备有限公司 | Compressed air foam lifting jet fire engine |
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| CN2722962Y (en) * | 2004-08-26 | 2005-09-07 | 公安部上海消防研究所 | A class foam first extinguisher of compressed air |
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Application publication date: 20220429 |