CN112516499A - Mobile liquid nitrogen fire-fighting system and fire-fighting method thereof - Google Patents
Mobile liquid nitrogen fire-fighting system and fire-fighting method thereof Download PDFInfo
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- CN112516499A CN112516499A CN202011518557.6A CN202011518557A CN112516499A CN 112516499 A CN112516499 A CN 112516499A CN 202011518557 A CN202011518557 A CN 202011518557A CN 112516499 A CN112516499 A CN 112516499A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 416
- 239000007788 liquid Substances 0.000 title claims abstract description 230
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 208
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 239000007921 spray Substances 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 11
- 230000003028 elevating effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 16
- 239000007789 gas Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 241000883966 Astrophytum capricorne Species 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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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
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- Health & Medical Sciences (AREA)
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the field of fire protection, in particular to a mobile fire extinguishing system using liquid nitrogen as a fire-fighting agent and a using method thereof, wherein the mobile liquid nitrogen fire extinguishing system mainly comprises a mobile liquid nitrogen fire extinguishing platform, and the mobile liquid nitrogen fire extinguishing platform is communicated with a liquid nitrogen tanker through a conveying hose; the movable liquid nitrogen fire extinguishing platform comprises a moving device, a fire monitor rack, a liquid nitrogen injection monitor, a low-temperature booster pump and a conveying hose, wherein one end of the conveying hose is connected with a liquid nitrogen tank car, the other end of the conveying hose is connected with the liquid nitrogen injection monitor, the fire monitor rack is arranged on the moving device, the conveying hose is attached to the fire monitor rack, the moving device is also provided with the low-temperature booster pump capable of pressurizing liquid nitrogen in the conveying hose, the device can use the liquid nitrogen as a low-temperature inert fire extinguishing agent to quickly extinguish large fire, and meanwhile, a universal standard quick interface can be connected with a non-fire-fighting special liquid nitrogen transportation tank car to uninterruptedly provide fire-.
Description
Technical Field
The invention relates to the field of fire fighting, in particular to a mobile fire extinguishing system using liquid nitrogen as a fire extinguishing agent and a using method thereof.
Background
Among various disasters, a fire disaster is one of the most frequent and common disasters endangering public safety and social development, and when a fire disaster occurs in a large scale and combustible materials are burnt violently, the fire fighting water used as a fire extinguishing agent has great limitations: 1. the fire-fighting water has limited cooling effect, and the fire-fighting effect of the water is not ideal under the condition of large fire or inflammable substances; 2. fire water causes secondary pollution in the process of fire extinguishing, and can damage and destroy machinery and electric wire circuits although the purpose of fire extinguishing can be achieved. Liquid nitrogen as an inert fire extinguishing agent absorbs a large amount of heat during gasification, and the volume expansion ratio of the liquid nitrogen is as high as 1: 696 exhausting air around the combustible substance while absorbing heat, isolating oxygen in the air, and rapidly extinguishing fire in terms of temperature reduction and oxide isolation; meanwhile, secondary pollutants cannot be left after the liquid nitrogen is gasified, and the liquid nitrogen has a good protection effect on mechanical or electronic circuits and the like.
Because the storage mode of the liquid nitrogen is relatively complex, the existing fire fighting device using the liquid nitrogen adopts a fixed mode as a fire fighting system for preventing and monitoring fire, and when an emergency fire occurs outside the protection range of the fire fighting system and is difficult to extinguish, the fixed liquid nitrogen fire fighting system cannot timely support the fire scene; liquid nitrogen needs to be stored by a special means, so that fire-fighting reserve liquid nitrogen used on a fire scene cannot be quickly supplemented after being used up, fire situations are easily delayed under the condition, and larger property loss is caused.
Patent No. 201710986196.X discloses a liquid storage method of a gas fire extinguishing agent and a device thereof, wherein the device comprises a vacuum storage tank for storing the liquid gas fire extinguishing agent, a refrigerator connected to the storage tank and used for keeping the liquid gas fire extinguishing agent in a range of 200-196 degrees below zero and storing the liquid gas fire extinguishing agent in the vacuum storage tank, a container valve body group used for spraying the liquid gas fire extinguishing agent out of the vacuum storage tank, a reversing valve body group used for pressurizing the interior of the vacuum storage tank, and a liquid level meter used for measuring and monitoring the liquid level of the vacuum storage tank. By using the equipment, the gas fire extinguishing agent can be liquefied into liquid, so that the gas fire extinguishing agent is continuously stored in the vacuum storage tank, the liquid gas fire extinguishing agent in the vacuum storage tank is not reduced and is not emptied, and the storage capacity in the vacuum storage tank is kept unchanged. Therefore, the long-term storage of the liquid nitrogen can be realized on the fire-fighting liquid nitrogen tank car by using the device, the condition that the storage capacity is reduced along with the lengthening of the storage time can not occur, and the purpose of using the liquid nitrogen as a fire-fighting agent and storing the liquid nitrogen for a long time is realized.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a liquid nitrogen fire-fighting platform which uses liquid nitrogen as a fire-fighting agent and can quickly replace a liquid nitrogen tank truck by using a standard interface.
In order to achieve the aim, the invention provides a mobile liquid nitrogen fire-fighting system which comprises a mobile liquid nitrogen fire-fighting platform and a liquid nitrogen tank truck, wherein the mobile liquid nitrogen fire-fighting platform is communicated with the liquid nitrogen tank truck through a conveying hose; remove liquid nitrogen fire extinguishing platform includes the mobile device, the fire control gun rack, liquid nitrogen sprays the big gun, low temperature booster pump and delivery hose, the liquid nitrogen tank wagon is connected to delivery hose's one end, liquid nitrogen sprays the big gun is connected to the other end, the fire control gun rack sets up on the mobile device, delivery hose attaches to on the fire control gun rack, still be equipped with on the mobile device and give the pressurized low temperature booster pump of liquid nitrogen in the delivery hose, the low temperature booster pump can bear the super low temperature of liquid nitrogen, take out the liquid nitrogen from the tank wagon and carry the liquid nitrogen with a higher pressure and spray the big gun, then spray the conflagration scene in the liquid nitrogen sprays the big gun.
As a further improvement of the invention, the mobile device is a trailer with a rear carriage, the fire monitor rack is of a foldable or telescopic arm structure, the bottom of the fire monitor rack is connected to the rear carriage through a rotating platform, the rotating platform can drive the fire monitor rack to rotate 360 degrees on the horizontal plane, the mobile device can carry the fire monitor rack to rapidly arrive at a fire site, the fire monitor rack is of a folding structure or a telescopic structure, occupied space can be saved when the mobile device is not used, and liquid nitrogen can be filled into the center of the fire site by extending the mobile device to be close to the center of the fire site in high altitude in the using process, so that effective fire extinguishment is realized.
As a further improvement of the invention, the conveying hose comprises a first conveying hose and a second conveying hose, the upper part of the first conveying hose is attached to the fire monitor rack, the lower part of the first conveying hose is connected with a liquid outlet of the low-temperature booster pump, the front part of the second conveying hose is connected with a liquid inlet of the low-temperature booster pump, the rear part of the second conveying hose extends towards the rear end and is connected with the liquid nitrogen tank truck, and the liquid inlet pipe and the liquid outlet pipe of the low-temperature booster pump are connected to the low-temperature booster pump respectively due to different pressures, so that mutual influence of liquids in the pipes can be avoided.
As a further improvement of the invention, when the fire is large on site, people cannot approach the fire or people cannot observe the fire in the air through the lifting platform, in order to better check the situation of the fire scene, the liquid nitrogen injection cannon is provided with an intelligent detection device, the mobile device is also provided with a controller, the intelligent detection device is used for sweeping the fire situation and transmitting signals to the controller, the controller is electrically connected with the low-temperature booster pump, the controller can adjust the pressure of the low-temperature booster pump so as to control the injection distance and height of the liquid nitrogen, the controller is also electrically connected with the rotating platform, and the controller can control the rotating direction of the rotating platform.
As a further improvement of the invention, in order to increase the pressure of liquid nitrogen transmission and enable the liquid nitrogen to be sprayed to the center position of a farther fire scene, the number of the low-temperature booster pumps is more than one, the low-temperature booster pumps are arranged on the rear carriage in parallel, and a liquid inlet pipe and a liquid outlet pipe of the low-temperature booster pumps which are arranged in parallel are respectively communicated with the second conveying hose and the first conveying hose.
As a further improvement of the invention, in order to avoid the liquid nitrogen remained in the conveying hose from damaging the pipeline due to thermal expansion, the conveying hose is also provided with a safety valve for releasing the pressure in the pipeline, and in order to avoid the insufficient pressure release capacity of a single safety valve, the conveying hose is distributed with a plurality of safety valves.
As a further improvement of the invention, in order to observe the fire situation of the scene more clearly, the top end of the fire monitor rack is provided with a lifting platform for standing a fireman, before the fire monitor rack is lifted, the fireman stands on the lifting platform, and ascends along with the lifting of the fire monitor rack, the liquid nitrogen spraying gun is arranged on the lifting platform, the liquid nitrogen spraying gun can rotate on the lifting platform to adjust the spraying direction of the liquid nitrogen, the rear part of the liquid nitrogen runner is provided with a handle which can be manually operated, and the fireman standing on the platform can manually adjust the spraying direction of the liquid nitrogen spraying gun according to the situation of the fire scene.
As a further improvement of the invention, the liquid nitrogen tanker is a common liquid nitrogen transportation tanker with a standard liquid nitrogen interface, therefore, the mobile liquid nitrogen fire extinguishing platform of the invention not only can be matched with a special fire-fighting liquid nitrogen tanker, but also can be connected with the common liquid nitrogen transportation tanker through a uniform interface, once the liquid nitrogen of the fire-fighting tanker is used up, the mobile liquid nitrogen fire extinguishing platform can be supported by the transportation tanker near the fire scene, and the liquid nitrogen can be uninterruptedly used for fire extinguishing only by replacing the tanker, thereby solving the problem that the liquid nitrogen is difficult to supplement in the fire scene.
The invention also provides a fire extinguishing method using the mobile liquid nitrogen fire fighting system, which comprises the following steps:
s1: when a fire disaster occurs, the mobile liquid nitrogen fire extinguishing platform is moved to the position near the fire scene, and more non-fire-fighting special liquid nitrogen transportation tank cars can be regulated according to the specific situation of the fire disaster while the liquid nitrogen tank cars matched with fire-fighting equipment are used;
s2: connecting the bottom end of the conveying hose with a liquid nitrogen outlet of a liquid nitrogen tank car;
s3: lifting the fire monitor rack, driving the conveying hose and the liquid nitrogen injection monitor by lifting the fire monitor rack, and aligning the liquid nitrogen injection monitor at the top end of the fire monitor rack to the central position of a fire scene;
s4: starting a low-temperature booster pump to convey liquid nitrogen into a conveying hose, conveying the liquid nitrogen to a liquid nitrogen injection gun through the conveying hose, and injecting the liquid nitrogen to a fire scene after secondary pressurization of the liquid nitrogen injection gun;
s5: when the liquid nitrogen in the liquid nitrogen tank wagon runs out, the conveying hose is detached from the liquid nitrogen tank wagon, and then the conveying hose is connected with the next liquid nitrogen tank wagon.
Further, aiming the liquid nitrogen injection gun at the top end of the fire monitor rack at a fire scene comprises:
when a fire fighter cannot get close to the scene through the lifting platform, the living condition is scanned by using an intelligent detection device arranged on the liquid nitrogen injection cannon, and the injection distance and angle of the liquid nitrogen are adjusted by controlling the pressure of the cryogenic booster pump through the controller;
when the firefighter can get close to the scene through the lifting platform, the spraying direction of the liquid nitrogen spraying cannon can be manually adjusted through the firefighter.
The invention has the beneficial effects that: the liquid nitrogen is used as a fire-fighting agent, and can absorb a large amount of heat from the surrounding environment in the gasification process, and simultaneously isolate oxygen in the surrounding air, so that the aim of quickly extinguishing a fire is fulfilled; the interface between the conveying soft bottom on the fire extinguishing platform and the liquid nitrogen tank car is a universal standard interface, not only can be connected with the liquid nitrogen tank car special for fire fighting, but also can be commandeered and regulated under the conditions of emergency fire and insufficient fire-fighting liquid nitrogen, the liquid nitrogen conveying tank car special for non-fire fighting can be used for emergency rescue, after the liquid nitrogen in one liquid nitrogen tank car is used, the liquid nitrogen can be quickly and continuously provided for fire fighting and fire extinguishing through replacing the interface, and through continuously injecting a large amount of liquid nitrogen, the liquid nitrogen tank car fire extinguishing device can quickly and effectively extinguish large-scale fire.
Drawings
For ease of illustration, the present invention is described in detail by the following preferred embodiments and the accompanying drawings.
FIG. 1 is a schematic overall view of a mobile liquid nitrogen fire suppression platform according to the present invention;
FIG. 2 is an enlarged schematic view of the mobile device of the present invention;
FIG. 3 is a schematic view of a fire monitor stand with a lift platform according to the present invention;
FIG. 4 is a cross-sectional view of a safety valve according to the present invention;
FIG. 5 is a liquid nitrogen injection cannon in accordance with the present invention;
in the figure: 1-moving liquid nitrogen fire extinguishing platform, 11-moving device, 111-rear carriage, 112-controller, 12-fire monitor rack, 121-rotating platform, 122-lifting platform, 13-liquid nitrogen spraying monitor, 131-intelligent detecting device, 132-fixing seat, 14-low temperature booster pump, 15-conveying hose, 151-first conveying hose, 152-second conveying hose, 153-safety valve, 1531-spring, 1532-piston, 1533-sealing gasket, 1534-pressure relief hole, 16-support frame and 2-liquid nitrogen tank car.
Detailed Description
The invention is further described by reference to the attached drawings, wherein:
the mobile liquid nitrogen fire-fighting system shown in fig. 1 comprises a mobile liquid nitrogen fire-fighting platform 1 and a liquid nitrogen tank wagon 2, wherein the mobile liquid nitrogen fire-fighting platform 1 is communicated with the liquid nitrogen tank wagon 2 through a conveying hose 15; remove liquid nitrogen fire extinguishing platform 1 and include mobile device 11, fire gun frame 12, liquid nitrogen injection big gun 13, low temperature booster pump 14 and delivery hose 15, liquid nitrogen tank wagon 2 is connected to delivery hose 15's one end, and liquid nitrogen injection big gun 13 is connected to the other end, and fire gun frame 12 sets up on mobile device 11, and delivery hose 15 is attached to on fire gun frame 12, still is equipped with on the mobile device 11 and can gives the pressurized low temperature booster pump 14 of liquid nitrogen in the delivery hose 15.
As shown in fig. 2, the moving device 11 is a trailer with a rear compartment 111, the fire monitor rack 12 is of a foldable or telescopic arm structure, the bottom of the fire monitor rack 12 is connected to the rear compartment 111 through a rotating platform 121, and the rotating platform 121 can drive the fire monitor rack 12 to rotate 360 ° in the horizontal plane.
As shown in fig. 2, the conveying hose 15 includes a first conveying hose 151 and a second conveying hose 152, an upper portion of the first conveying hose 151 is attached to the fire monitor rack 12, and a lower portion of the first conveying hose 151 is connected to a liquid outlet of the cryogenic booster pump 14; the front part of the second conveying hose 152 is connected with the liquid inlet of the low-temperature booster pump 14, and the rear part of the second conveying hose 152 extends to the rear end and is connected with the liquid nitrogen tanker 2.
As shown in fig. 3, an intelligent detection device 131 is arranged on the liquid nitrogen injection gun 13, a controller 112 is further arranged on the mobile device 11, the intelligent detection device 131 is used for sweeping a fire situation and transmitting a signal to the controller 112, the controller 112 is electrically connected with the low-temperature booster pump 14, the controller 112 can adjust the pressure of the low-temperature booster pump 14 to control the distance and height of liquid nitrogen injection, the controller 112 is further electrically connected with the rotary platform 121, and the controller 112 can control the rotation direction of the rotary platform 121.
As shown in fig. 1 and 2, the number of the low-temperature booster pumps 14 is more than one.
As shown in fig. 2 and 3, the delivery hose 15 is further provided with a safety valve 153 for releasing the pressure in the hose, the number of the safety valves 153 is more than one, the safety valve mainly comprises a spring 1531, a piston 1532 and a gasket 1533, the gasket 1533 is made of liquid nitrogen low temperature polytetrafluoroethylene, and the piston 1532 is provided with a pressure release hole 1534 for releasing nitrogen.
As shown in fig. 3, a lifting platform 122 for standing a firefighter is arranged at the top end of the fire monitor frame 12, the liquid nitrogen injection monitor 13 is arranged on the lifting platform 122, the liquid nitrogen injection monitor 13 can rotate on the lifting platform 122 to adjust the liquid nitrogen injection direction, and a firefighter standing on a platform can manually adjust the injection direction of the liquid nitrogen injection monitor 13 according to the situation of a fire scene.
The liquid nitrogen tank wagon 2 is a common liquid nitrogen transportation tank wagon with a standard liquid nitrogen interface.
As shown in fig. 3 and 5, the liquid nitrogen injection cannon 13 is fixed on the lifting platform through a fixing seat 132 at the bottom, and the fire hose 15 passes through the bottom surface of the lifting platform 122 to be connected with the liquid nitrogen injection cannon 13.
The present invention provides three embodiments:
example 1:
the mobile liquid nitrogen fire-fighting system can use a semitrailer as a mobile carrier, the head of the semitrailer as a mobile device 11, and fire-fighting equipment for fire extinguishment is arranged on the rear compartment 111 of the semitrailer. The fire fighting device for fire extinguishing mainly comprises a fire fighting gun carrier 12, wherein the fire fighting gun carrier 12 is of a folding structure and is connected to a rotary platform 121, and the rotary platform 121 can adjust the rotation direction of the fire fighting gun carrier 12 according to the situation of a fire scene so as to realize direct injection of liquid nitrogen to a fire center. The fire monitor frame 12 in the folded state can be carried by the moving device 11 and can be rapidly moved to a fire scene for rescue. In order to improve the stability of the moving device 11 during fire extinguishing, a pair of supporting frames 16 are respectively arranged on two sides of the moving device 11, and before the fire monitor rack 12 is extended, the supporting frames 16 are extended outwards in advance to improve the stability of the moving device 11 and the fire monitor rack 12.
The fire monitor frame 12 is also attached with a fire hose 15 for conveying liquid nitrogen, in order to bear the ultra-low temperature of the liquid nitrogen, the conveying hose 15 is a corrugated pipe made of 316 stainless steel, the corrugated pipe is wrapped with a woven mesh made of 304 stainless steel, and the corrugated pipe made of the stainless steel can be bent along with the folding and steering of the fire monitor frame 12 while conveying the liquid nitrogen. The top of fire gun frame 12 is fixed with liquid nitrogen and sprays big gun 13, the rear end that liquid nitrogen sprays big gun 13 is connected with delivery hose 15, delivery hose 15's bottom is connected with the fire engine of transportation liquid nitrogen through the interface of standard, in order to realize the quick replacement of interface and the zonulae occludens under the ultra-low temperature state, the interface is the general goat's horn formula quick interface of liquid nitrogen pipeline, as the fire fighting tanker of transportation liquid nitrogen, be equipped with the low temperature booster pump 14 that is used for increasing liquid nitrogen delivery pressure on the mobile device 11, provide power through electric power, can promote the liquid nitrogen and spray out in the liquid nitrogen injection big gun 13 on delivery hose 15 tops, realize carrying out the liquid nitrogen injection to the conflagration center.
When the fire disaster situation is serious and the liquid nitrogen in the liquid nitrogen tanker 2 special for fire fighting is not enough to extinguish the fire disaster, the liquid nitrogen transportation tanker near the investigation and regulation and not special for fire fighting comes to the fire disaster site, the movable liquid nitrogen fire extinguishing platform 1 can be quickly connected with the liquid nitrogen tanker 2 special for non-fire fighting through the bottom end of the delivery hose 15 and the universal claw type quick connector on the liquid nitrogen tanker 2, the uninterrupted supply of the liquid nitrogen is realized, and the purpose of quickly extinguishing the fire disaster is achieved.
In order to ensure that the low-temperature booster pumps 14 can provide enough jet power, a plurality of low-temperature booster pumps 14 are arranged, the low-temperature booster pumps 14 are connected in parallel, liquid inlets of the low-temperature booster pumps 14 are respectively connected with a liquid inlet pipe, liquid outlets of the low-temperature booster pumps 14 are respectively connected with a liquid outlet pipe, and meanwhile, the low-temperature booster pumps 14 can be matched with power pumps on a liquid nitrogen tank truck 2 for fire fighting to improve the total driving force for conveying liquid nitrogen.
Still be provided with on the liquid nitrogen sprays big gun 13 and be used for from the high altitude scanning conflagration scene condition intelligent detection device 131, be equipped with on the back carriage with the controller 112 that intelligent detection device 131 is connected, intelligent detection device 131 can use infrared scanner, according to the distribution of the temperature at conflagration scene, detects the central ignition point that the conflagration scene temperature is the highest to transmit the position of the central ignition point at conflagration scene to in the controller 112, controller 112 still with low temperature booster pump 14, rotary platform 121 electric connection, controller 112 can be according to the distance and the direction of conflagration central point, through calculating, control low temperature booster pump 14's transmission power, the jet distance of adjustment liquid nitrogen flow to control rotary platform 121 realizes adjusting fire gun carrier 12 direction and rotates.
Example 2:
the top of fire control gun rack 12 is equipped with elevating platform 122, and liquid nitrogen sprays big gun 13 and fixes on the elevating platform 122, be equipped with on the liquid nitrogen sprays big gun 13 and is used for the pivoted handle, and the fire fighter can stand and spray big gun 13 with liquid nitrogen and rise high altitude together on elevating platform 122, and when putting out a fire, the fire fighter passes through the field observation, and manual control liquid nitrogen sprays big gun 13's injection distance, direction to the conflagration condition that will observe returns ground in real time, makes more accurate judgement for the commander.
Example 3:
after the fire is extinguished, a part of liquid nitrogen which is usually left in the delivery hose 15 needs to be dispersed on the delivery hose 15 because the liquid nitrogen has a large volume expansion ratio, so that a safety valve 153 for discharging pressure needs to be arranged on the delivery hose 15, the inside of the safety valve 153 mainly comprises a piston 1532 and a spring 1531, the safety valve 153 can be set to different opening pressures by using different types and sizes of the spring 1531, when the internal pressure of the delivery hose 15 is greater than the opening pressure of the safety valve 153, the piston can be pushed backwards and compresses the spring 1531 to release the expanded nitrogen in the delivery hose 15, the delivery hose 15 is prevented from being damaged due to the large pressure in the delivery hose 15, and when the pressure in the hose is reduced to the safety pressure, the spring 1531 in the safety valve 153 can automatically close the safety valve 153.
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. The utility model provides a remove liquid nitrogen fire extinguishing systems which characterized in that: the device comprises a mobile liquid nitrogen fire extinguishing platform (1) and a liquid nitrogen tank wagon (2), wherein the mobile liquid nitrogen fire extinguishing platform (1) is communicated with the liquid nitrogen tank wagon (2) through a conveying hose (15); remove liquid nitrogen fire extinguishing platform (1) and include mobile device (11), fire gun frame (12), liquid nitrogen sprays big gun (13), low temperature booster pump (14) and delivery hose (15), fire gun frame (12) set up on mobile device (11), delivery hose (15) are on adhering to fire gun frame (12), liquid nitrogen tank wagon (2) are connected to the one end of delivery hose (15), liquid nitrogen sprays big gun (13) is connected to the other end, still be equipped with on mobile device (11) and can give pressurized low temperature booster pump (14) of liquid nitrogen in delivery hose (15).
2. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: the mobile device (11) is a trailer with a rear carriage (111), the fire monitor rack (12) is of a foldable or telescopic arm structure, the bottom of the fire monitor rack (12) is connected to the rear carriage (111) through a rotating platform (121), and the rotating platform (121) can drive the fire monitor rack (12) to rotate on the horizontal plane for 360 degrees.
3. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: the conveying hose (15) comprises a first conveying hose (151) and a second conveying hose (152), the upper part of the first conveying hose (151) is attached to the fire monitor rack (12), and the lower part of the first conveying hose (151) is connected with a liquid outlet of the low-temperature booster pump (14);
the front part of the second conveying hose (152) is connected with a liquid inlet of the low-temperature booster pump (14), and the rear part of the second conveying hose (152) extends towards the rear end and is connected with the liquid nitrogen tanker (2).
4. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: be provided with intelligent detection device (131) on liquid nitrogen injection big gun (13), still be equipped with controller (112) on mobile device (11), intelligent detection device (131) are used for the sweeping fire condition, and with signal transmission controller (112), controller (112) with low temperature booster pump (14) electric connection, controller (112) can be adjusted the rotational speed of low temperature booster pump (14) and then control the distance and the height that liquid nitrogen sprays, controller (112) still with rotary platform (121) electric connection, controller (112) can control rotary platform (121)'s direction of rotation.
5. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: the number of the low-temperature booster pumps (14) is more than one.
6. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: the conveying hose (15) is also provided with a safety valve (153) for releasing pressure in the pipe, and the number of the safety valves (153) is more than one.
7. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: fire monitor frame (12) top is equipped with elevating platform (122) that is used for the fire fighter of standing, liquid nitrogen sprays big gun (13) and sets up on elevating platform (122), liquid nitrogen sprays big gun (13) can rotary adjustment liquid nitrogen injection direction on elevating platform (122), and the fire fighter of standing on the platform can be according to the on-the-spot condition manual adjustment liquid nitrogen of conflagration and spray the injection direction of big gun (13).
8. The mobile liquid nitrogen fire fighting system according to claim 1, characterized in that: the liquid nitrogen tank wagon (2) is a common liquid nitrogen transportation tank wagon with a standard liquid nitrogen interface.
9. A method of extinguishing a fire using the mobile liquid nitrogen fire protection system of claim 1, comprising the steps of:
s1: when a fire disaster occurs, the mobile liquid nitrogen fire extinguishing platform (1) is moved to the position near the fire scene, and more non-fire-fighting special liquid nitrogen tank cars (2) can be regulated according to the specific situation of the fire disaster while the liquid nitrogen tank cars (2) matched with fire-fighting equipment are used;
s2: the bottom end of the conveying hose (15) is connected with a liquid nitrogen outlet of the liquid nitrogen tank car (2);
s3: lifting the fire monitor rack (12), driving the conveying hose (15) and the liquid nitrogen injection monitor (13) by lifting the fire monitor rack (12), and aligning the liquid nitrogen injection monitor (13) at the top end of the fire monitor rack (12) to the central position of a fire scene;
s4: starting a low-temperature booster pump (14) to convey liquid nitrogen into a conveying hose (15), conveying the liquid nitrogen into a liquid nitrogen injection gun (13) through the conveying hose (15), and injecting the liquid nitrogen to a fire scene after secondary pressurization of the liquid nitrogen injection gun (13);
s5: when the liquid nitrogen in the liquid nitrogen tank car (2) runs out, the conveying hose (15) is detached from the liquid nitrogen tank car, and then the conveying hose (15) is connected with the next liquid nitrogen tank car.
10. The method of extinguishing a fire using a mobile liquid nitrogen fire protection system of claim 9: the method is characterized in that: aiming a liquid nitrogen injection gun (13) at the top end of a fire monitor rack (12) at a fire scene comprises:
when the firefighter cannot get close to the scene through the lifting platform (122), the living situation is scanned by using an intelligent detection device (131) arranged on the liquid nitrogen injection cannon (13), and the pressure of the low-temperature booster pump (14) is controlled by the controller (112) to adjust the injection distance and angle of the liquid nitrogen;
when a fire fighter can get close to the scene through the lifting platform (122), the spraying direction of the liquid nitrogen spraying cannon (13) can be manually adjusted by the fire fighter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114796962A (en) * | 2022-04-13 | 2022-07-29 | 泉州市拓科信息技术有限公司 | City safety fire extinguishing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114796962A (en) * | 2022-04-13 | 2022-07-29 | 泉州市拓科信息技术有限公司 | City safety fire extinguishing system |
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