CN202942576U - Ultrafine water mist total-flooding fire extinguisher - Google Patents

Ultrafine water mist total-flooding fire extinguisher Download PDF

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Publication number
CN202942576U
CN202942576U CN 201220663901 CN201220663901U CN202942576U CN 202942576 U CN202942576 U CN 202942576U CN 201220663901 CN201220663901 CN 201220663901 CN 201220663901 U CN201220663901 U CN 201220663901U CN 202942576 U CN202942576 U CN 202942576U
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CN
China
Prior art keywords
water
tank
fan
atomization chamber
atomizer
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Expired - Fee Related
Application number
CN 201220663901
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Chinese (zh)
Inventor
梁栋
刘建勇
沈浩
莫善军
赵哲
朱德民
褚燕燕
王海蓉
王粤
董文莉
晏建波
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Sun Yat Sen University
National Sun Yat Sen University
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National Sun Yat Sen University
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Priority to CN 201220663901 priority Critical patent/CN202942576U/en
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Publication of CN202942576U publication Critical patent/CN202942576U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses an ultrafine water mist total-flooding fire extinguisher which comprises a water tank, a water pump, a multi-head atomizer, a water storage tank, an atomization cavity and a fan, wherein the water pump is arranged at the bottom of the water tank; the water storage tank is suspended above the water tank; the water pump delivers water in the water tank into the water storage tank through a water pipe; the multi-head atomizer is arranged at the bottom of the water storage tank; the atomization cavity is arranged above the water storage tank; the fan is arranged in the middle of the atomization cavity; a gap between the upper edge of the water storage tank and the lower edge of the atomization cavity is an air inlet; and the water pump, the fan and the multi-head atomizer are connected with an external power supply system. According to the utility model, the smoke in a total-flooding fire extinguishing space is used as a carrier gas for conveying ultrafine water mist, the shortcomings of oxygen content increase, complicated system and the like caused by taking outdoor air, nitrogen and the like as carrier gas are avoided, and the total-flooding fire extinguishing efficiency in a closed space can be greatly improved.

Description

A kind of superfine spray total flooding extinguishing device
Technical field
The utility model relates to the fine mist fire-fighting applied technical field, particularly a kind of superfine spray total flooding extinguishing device.
Background technology
Progress along with science and technology, after finding that particularly halon extinguishing agent has destruction and Montreal Protocol on Substances that Deplete the Ozone Layer signature in 1987 to atmospheric ozone layer, Water Mist Fire Extinguishing Technique obtains concern and the favor of all circles as one of main substitute technology of Kazakhstan dragon, Water Mist Fire Extinguishing Technique just obtained developing in the nineties in 20th century tremendously.
Generating mode for thin water smoke, mainly adopt heavy pressure fine spray, two kinds of technology of the thin water smoke of two-phase flow at fire-fighting domain at present, but these two kinds of traditional atomizing types have a common feature, water source or source of the gas all need a sufficiently high pressure or jet velocity just can reach the thin water smoke of required particle diameter, therefore not only increase use cost, and had certain potential safety hazard.
And the electronic ultrasonic atomization technique is to use electronics high frequency oscillation principle, oscillating current by certain frequency on supersonic generator, produce the high-frequency electrical energy signal, then transducer is converted into ultrasonic mechanical oscillation (being ultrasonic wave), after this vibrating effect passes to liquid, make in liquid internal generation cavitation, under the high frequency cavitation of this liquid internal, a large amount of tiny drops are by the liquid level of dishing out, thereby form superfine water smoke.In the situation that 1.7MHz, the superfine water smoke average grain diameter of formation can be below 50 microns when the frequency of transducer, and this superfine water smoke is called as superfine spray.This kind technology has been received increasing concern.
The total flooding fire extinguishing is to point to the guard plot to spurt the extinguishing chemical of design code consumption, and a kind of extinguishing method that its fire extinguishing that is full of equably whole guard plot is put out a fire, and is mainly that relatively local submerged is put out a fire.
Publication number be CN 102019060B Introduction To Cn Patent a kind of electronic ultrasonic nozzle type atomized fine water mist fire-extinguishing device and method, this device comprises ultrasonic nozzle, spraying control device, nitrogen gas supply device, water system and electric power system, described ultrasonic nozzle, spraying control device, electric power system connect by holding wire successively, and electric power system is connected with power supply; The nitrogen gas supply device is connected with steam line, and the other end of steam line passes spraying control device and is connected with ultrasonic nozzle; Water system is connected with water supply line, and the other end of water supply line passes spraying control device and is connected with ultrasonic nozzle; Water system is connected with electric power system by the water pump supply lines.But this device is to generate thin water smoke by ultrasonic nozzle, and simultaneously, water smoke is directly to generate at the ultrasonic nozzle place, therefore can not be used for carrying out the total flooding fire extinguishing.In addition, its gas that adopts is nitrogen, therefore need to additionally provide the nitrogen gas supply device, has not only increased the complexity of cost and structure, and has been not easy to move, carry in the scene of fire.
Publication number be CN 101229418A Introduction To Cn Patent a kind of ultrasonic atomizing fire extinguisher, this device has power supply unit, water level regulon and ultrasonic atomizatio unit, it is characterized in that being arranged on the circulating fan that forms atomization chamber inner loop air-flow in atomization chamber, the water smoke outlet take air water two-phase flow overfall as atomization chamber.Unit ventilators in the present invention is to realize that in atomizer inside air circulation flows, and has avoided the dilution of outside air to thin water smoke, has greatly improved the drop mass mark in thin water smoke, makes ultrasonic atomizatio be able to use in fire-fighting fire extinguishing.This device has certain extinguishing ability, but this device fan is directly facing to producing the fog-zone, generation to thin water smoke in real process can produce considerable influence, on the other hand, if water smoke is transported to fast ignition point from water tank, can produce more serious touching also in process, form large diameter water droplet, thereby be difficult to keep the distribution of its particle diameter, so the transportation problem of water smoke has also limited the application of this device.
Therefore provide a kind of simple in structure, can realize that the method and apparatus of total flooding fire extinguishing has application value realistic.
The utility model content
Main purpose of the present utility model is to overcome the shortcoming of prior art with not enough, a kind of superfine spray total flooding extinguishing device is provided, this device is based on the electronic ultrasonic atomization technique, can be in the situation that the superfine thin water smoke of relatively gentle formation, and can utilize flue gas in total flooding fire extinguishing space as the carrier gas of conveying superfine spray, simple in structure, use safety, the total flooding fire-fighting efficiency is high.
The purpose of this utility model realizes by following technical scheme: a kind of superfine spray total flooding extinguishing device, comprise water tank, water pump, bull atomizer, tank, atomization chamber and fan, described water pump is positioned at water tank bottom, tank is unsettled be located at water tank directly over, water pump is delivered to the water in water tank in tank by water-supply-pipe, and the bull atomizer is arranged on the bottom of tank; Be provided with atomization chamber directly over tank, be provided with fan in the middle part of atomization chamber, it is air inlet that a gap is arranged between tank top edge and atomization chamber lower limb; Described water pump, fan and bull atomizer all are connected with the externally fed system.In use, this device is placed near ignition point position, then opening electric power system gets final product, utilize flue gas in total flooding fire extinguishing space as the carrier gas of conveying superfine spray, the shortcomings such as the increase oxygen content of having avoided adopting outdoor air, nitrogen etc. to bring as carrier gas, system complex can greatly improve the total flooding fire-fighting efficiency in confined space.
Preferably, the upper surface of described tank is lower than the upper surface of water tank.Owing to keeping highly stable in tank, can make the product mist usefulness of atomizer reach maximum, too high and too low all can the impact of water level of water level produced mist efficient.So adding water in water tank is the limiting altitude that water tank can add water to this situation of the fair expression of upper surface with tank, then mist is produced in the higher position impact.In addition on the one hand, owing to having certain heating situation in atomizer work, water in water tank can soak atomizer to the full extent from the outside, can effectively lower the temperature to atomizer, it is overheated to prevent, therefore thereby can prevent the atomizer excess Temperature to the impact of atomizing effect, from this respect, adding in water tank that water maintains an equal level to the upper surface with tank is also the safest height of water level that guarantees that atomizer works.Therefore from this two aspect, the position that maintains an equal level with the tank upper surface is the optimum position.
Further, in vertical direction, the upper surface of described water tank is higher than the lower surface of atomization chamber, and difference in height is 10 ~ 100mm, and in the horizontal direction, the gap between the sidewall of water tank and the sidewall of atomization chamber is all between 10 ~ 30mm.
Preferably, the bottom surface of described tank is comprised of the upper surface of bull atomizer, and the altitude range of tank is 30 ~ 80mm.
Further, described bull atomizer is the integrated form atomizer, and each bull atomizer contains 6 ~ 10 atomising heads.
Further, the quantity of described bull atomizer is 1 ~ 10, and the operating voltage range of bull atomizer is 12V ~ 36V, and the operating frequency of bull atomizer is 1.0 ~ 3.0MHz.
Preferably, the size of described atomization chamber lower limb is larger than the top edge of tank, wherein long and wide each large 10 ~ 30mm.
Further, between described fan lower surface and atomization chamber lower limb plane, altitude range is 30 ~ 200mm.
Further, the distance between the fog outlet at fan upper surface and atomization chamber top is 100 ~ 1000mm.
Preferably, the height of described air inlet is 10 ~ 200mm.
Preferably, described water pump is minisize dc low pressure immersible pump, and operating voltage range is 3 ~ 24V, and the quantity of water pump is 1 ~ 4.
Preferably, described fan adopts the dc low-voltage fan, and the operating voltage range of fan is 3 ~ 24V, and the quantity of fan is 1 ~ 10.
As preferably, the material of main part except electronic component adopts stainless steel to make, and power line uses fire-resisting cable.
The utility model is realized based on following method: a kind of superfine spray total flooding extinguishing method, water pump is positioned at water tank bottom, by water-supply-pipe, water is sent into the tank that is positioned at water tank upper, bull atomizer ejection water column and the atomization chamber directly over tank in tank form superfine spray, under the effect of fan, surrounding air enters atomization chamber from the gap of atomization chamber and tank, afterwards with superfine spray together through passing through fan, then enter into surrounding air through the fog outlet at atomization chamber top.The method utilizes flue gas in total flooding fire extinguishing space as the carrier gas of carrying superfine spray, and the thin water smoke that device is produced is applied directly to the fire area, and the oxygen concentration by reducing the fire area and the temperature of ignition point realize that fire extinguishing operates.
Specifically comprise the following steps:
(1) add water in water tank and arrive the position fair with the upper surface of tank;
(2) extinguishing device is placed near ignition point position;
(3) connect the power supply of water pump, water pump is started working, and by water-supply-pipe, water is sent into tank from water tank, until the water spill-over goes out tank, the water automatic back flow that overflows is in water tank;
(4) connect the power supply of fan, surrounding air is inhaled into atomization chamber, afterwards through passing through fan, then enters into surrounding air through fog outlet, forms an airflow circulating;
(5) connect the power supply of atomizer, the bull atomizer is from the little water column of tank ejection, and forms superfine spray in atomization chamber, and the airflow circulating that is formed by fan is taken superfine spray out of as carrier gas and entered into surrounding air from atomization chamber;
(6) along with the increase of time, the superfine spray that is brought in surrounding air is more and more denseer, makes the ratio of the oxygen in unit volume more and more lower, simultaneously under the effect of water smoke, the temperature of ignition point also constantly reduces, and final burning things which may cause a fire disaster extinguishes under the double action of cooling and anoxic.
The utility model compared with prior art has following advantage and beneficial effect:
(1) the utility model utilizes flue gas in total flooding fire extinguishing space as the carrier gas of conveying superfine spray, the shortcomings such as the increase oxygen content of having avoided adopting outdoor air, nitrogen etc. to bring as carrier gas, system complex can greatly improve the total flooding fire-fighting efficiency in confined space.
(2) the utility model makes and produces the fog-zone and keep little negative pressure, utilizes ventilating fan to siphon away the mist that produces the fog-zone, reduces the interference of system being produced mist, and favourable generation with water smoke has improved the efficiency that system produces mist.
(3) the utility model uses miniature immersible pump constantly to tank pump water, unnecessary water is back to water tank, be conducive to reduce on the one hand the water temperature of tank, also be conducive to keep on the other hand the height of water level of tank, thereby the product mist condition of the best is provided for system.
Description of drawings
Fig. 1 is the structural representation of the utility model device.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment 1
As shown in Figure 1, a kind of superfine spray total flooding extinguishing device, comprise water tank 1, water pump 2, bull atomizer 3, tank 4, atomization chamber 5, fan 6, air inlet 7, fog outlet 8, wherein water pump 2 is positioned at water tank 1 bottom, tank 4 is unsettled be located at water tank 1 directly over, water pump 2 is delivered to the water in water tank 1 in tank 4 by water-supply-pipe, and bull atomizer 3 is arranged on the bottom of tank 4; Be provided with atomization chamber 5 directly over tank 4, atomization chamber 5 middle parts are provided with fan 6, and it is air inlet 7 that a gap is arranged between tank 5 top edges and atomization chamber 6 lower limbs; Described water pump 2, fan 6 and bull atomizer are connected all and are connected with the externally fed system.
In the present embodiment, use 1 minisize dc low pressure immersible pump 2, operating voltage is 12V, uses 2 bull atomizers 3 that contain 10 atomising heads, and the operating voltage of bull atomizer 4 is 36V, and operating frequency is 1.7MHz.
In the present embodiment, the bottom surface of tank 4 is comprised of the upper surface of each bull atomizer 3, and the height of tank 4 is 30mm.Atomization chamber 5 be positioned at tank 4 directly over, the size of its lower limb is larger than the top edge of tank 4, long and wide each large 10mm wherein, the altitude range between fan 6 lower surfaces and atomization chamber 5 lower limb planes is 50mm.Gap between tank 4 top edges and atomization chamber 5 lower limbs is air inlet 7, and the height of air inlet 7 is 50mm.
In the present embodiment, use 2 dc low-voltage fans 6, the operating voltage range of fan 6 is 12V.Distance between fan 6 upper surfaces and fog outlet 8 is 500mm.
In the present embodiment, the upper surface of described tank is lower than the upper surface of water tank, simultaneously, in vertical direction, the upper surface of described water tank 1 is higher than the lower surface of atomization chamber 5, and difference in height is 30mm, in the horizontal direction, the gap between the sidewall of the sidewall of water tank 1 and atomization chamber 4 is all between 10mm.
In the present embodiment, the material of main part except electronic component adopts stainless steel to make, and power line uses fire-resisting cable.
A kind of superfine spray total flooding extinguishing method of being realized by device shown in Figure 1, water pump 2 is positioned at water tank 1 bottom, by water-supply-pipe, water is sent into the tank 4 that is positioned at water tank 2 tops, bull atomizer 3 ejection water columns and the atomization chamber directly over tank 45 in tank 4 form superfine spray, under the effect of fan 6, surrounding air enters atomization chamber from the gap of atomization chamber 5 and tank 4, afterwards with superfine spray together through passing through fan, then enter into surrounding air through the fog outlet 8 at atomization chamber top.The method utilizes flue gas in total flooding fire extinguishing space as the carrier gas of carrying superfine spray, and the thin water smoke that device is produced is applied directly to the fire area, and the oxygen concentration by reducing the fire area and the temperature of ignition point realize that fire extinguishing operates.Utilize flue gas in total flooding fire extinguishing space as the carrier gas of carrying superfine spray, the thin water smoke that device is produced is applied directly to the fire area, and the oxygen concentration by reducing the fire area and the temperature of ignition point realize that fire extinguishing operates.
Specifically comprise the following steps:
(1) add water in water tank and arrive the position fair with the upper surface of tank;
(2) extinguishing device is placed near ignition point position;
(3) connect the power supply of water pump, water pump is started working, and by water-supply-pipe, water is sent into tank from water tank, until the water spill-over goes out tank, the water automatic back flow that overflows is in water tank;
(4) connect the power supply of fan, surrounding air is inhaled into atomization chamber, afterwards through passing through fan, then enters into surrounding air through fog outlet, forms an airflow circulating;
(5) connect the power supply of atomizer, the bull atomizer is from the little water column of tank ejection, and forms superfine spray in atomization chamber, and the airflow circulating that is formed by fan is taken superfine spray out of as carrier gas and entered into surrounding air from atomization chamber;
(6) along with the increase of time, the superfine spray that is brought in surrounding air is more and more denseer, makes the ratio of the oxygen in unit volume more and more lower, simultaneously under the effect of water smoke, the temperature of ignition point also constantly reduces, and final burning things which may cause a fire disaster extinguishes under the double action of cooling and anoxic.
Embodiment 2
The present embodiment except following characteristics other structures with embodiment 1:
In the present embodiment, use 2 minisize dc low pressure immersible pumps 2, use 3 bull atomizers 3 that contain 10 atomising heads.
In the present embodiment, the height of tank 4 is 50mm.Altitude range between fan 6 lower surfaces and atomization chamber 5 lower limb planes is 70mm.The height of air inlet 7 is 30mm.
In the present embodiment, use 4 dc low-voltage fans 6.Distance between fan 6 upper surfaces and fog outlet 8 is 300mm.
In the present embodiment, the vertical height of the top edge opening of water tank 1 is higher than the height of atomization chamber 5 lower limbs, and difference in height is 20mm, and on horizontal direction, the gap scope between water tank 1 opening and atomization chamber 5 openings is 20mm.
Embodiment 3
The present embodiment except following characteristics other structures with embodiment 1:
In the present embodiment, use 4 minisize dc low pressure immersible pumps 2, the operating voltage of atomizer 4 is 36V, and operating frequency is 2.5MHz.
In the present embodiment, the distance between fan 6 upper surfaces and fog outlet 8 is 600mm.
Above-described embodiment is the better embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.

Claims (10)

1. superfine spray total flooding extinguishing device, it is characterized in that, comprise water tank, water pump, bull atomizer, tank, atomization chamber and fan, described water pump is positioned at water tank bottom, tank is unsettled be located at water tank directly over, water pump is delivered to the water in water tank in tank by water-supply-pipe, and the bull atomizer is arranged on the bottom of tank; Be provided with atomization chamber directly over tank, be provided with fan in the middle part of atomization chamber, it is air inlet that a gap is arranged between tank top edge and atomization chamber lower limb; Described water pump, fan and bull atomizer all are connected with the externally fed system.
2. superfine spray total flooding extinguishing device according to claim 1, is characterized in that, the bottom surface of described tank is comprised of the upper surface of bull atomizer, and the altitude range of tank is 30 ~ 80mm.
3. superfine spray total flooding extinguishing device according to claim 2, is characterized in that, described bull atomizer is the integrated form atomizer, and each bull atomizer contains 6 ~ 10 atomising heads.
4. superfine spray total flooding extinguishing device according to claim 3, is characterized in that, the quantity of described bull atomizer is 1 ~ 10, and the operating voltage range of bull atomizer is 12V ~ 36V, and the operating frequency of bull atomizer is 1.0 ~ 3.0MHz.
5. superfine spray total flooding extinguishing device according to claim 1, is characterized in that, the size of described atomization chamber lower limb is larger than the top edge of tank, wherein long and wide each large 10 ~ 30mm.
6. superfine spray total flooding extinguishing device according to claim 5, is characterized in that,
The upper surface of described tank is lower than the upper surface of water tank;
In vertical direction, the upper surface of described water tank is higher than the lower surface of atomization chamber, and difference in height is 10 ~ 100mm, and in the horizontal direction, the gap between the sidewall of water tank and the sidewall of atomization chamber is all between 10 ~ 30mm.
7. superfine spray total flooding extinguishing device according to claim 5, is characterized in that, the altitude range between described fan lower surface and atomization chamber lower limb plane is 30 ~ 200mm;
Distance between the fog outlet at fan upper surface and atomization chamber top is 100 ~ 1000mm.
8. superfine spray total flooding extinguishing device according to claim 7, is characterized in that, the height of described air inlet is 10 ~ 200mm.
9. superfine spray total flooding extinguishing device according to claim 1, is characterized in that, described water pump is minisize dc low pressure immersible pump, and operating voltage range is 3 ~ 24V, and the quantity of water pump is 1 ~ 4;
Described fan adopts the dc low-voltage fan, and the operating voltage range of fan is 3 ~ 24V, and the quantity of fan is 1 ~ 10.
10. according to claim 1-9 described superfine spray total flooding of any one extinguishing devices, is characterized in that, described extinguishing device material of main part adopts stainless steel to make, and power line uses fire-resisting cable.
CN 201220663901 2012-12-05 2012-12-05 Ultrafine water mist total-flooding fire extinguisher Expired - Fee Related CN202942576U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102961841A (en) * 2012-12-05 2013-03-13 中山大学 Device and method for total-flooding fire extinguishing by superfine water mist
CN112227882A (en) * 2020-10-12 2021-01-15 吉林省固和泰机械有限责任公司 Fire prevention cabinet and fire prevention system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102961841A (en) * 2012-12-05 2013-03-13 中山大学 Device and method for total-flooding fire extinguishing by superfine water mist
CN102961841B (en) * 2012-12-05 2016-03-09 中山大学 A kind of superfine spray total flooding extinguishing device and method
CN112227882A (en) * 2020-10-12 2021-01-15 吉林省固和泰机械有限责任公司 Fire prevention cabinet and fire prevention system

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20130522

Termination date: 20201205