CN105435396A - Unpowered CAFS fire extinguisher - Google Patents
Unpowered CAFS fire extinguisher Download PDFInfo
- Publication number
- CN105435396A CN105435396A CN201610037382.4A CN201610037382A CN105435396A CN 105435396 A CN105435396 A CN 105435396A CN 201610037382 A CN201610037382 A CN 201610037382A CN 105435396 A CN105435396 A CN 105435396A
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- China
- Prior art keywords
- spray
- unpowered
- fire extinguisher
- foam
- hole
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/66—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers
- A62C13/68—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers characterised by means for releasing the extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/76—Details or accessories
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides an unpowered compressed air foam system (CAFS) fire extinguisher. The unpowered CAFS fire extinguisher comprises a high-pressure air cylinder and a type-A foam fire extinguishing liquid container which are communicated through an air-liquid mixing communication pipe, and an outlet of the air-liquid mixing communication pipe is connected with a foam spray gun through a hose. With the horizontal central axis of a liquid outlet pipeline of a liquid outlet of the spray gun as the center, first spraying holes and a second spraying hole are formed in the mode of concentrating towards the center from the periphery in the liquid outlet direction; an included angle ranging from 15 degrees to 25 degrees is formed between the axes of the first spraying holes and the axis of the second spraying hole. By means of the unpowered CAFS fire extinguisher, the foam expansion ratio of a type-A foam extinguishing agent solution reaches up to 10-15 times, the superficial area of the water is enlarged, moisture retention is improved, the surfaces of burning objects can be cooled continuously, the reburning risk is reduced, and the fire extinguishing effect is improved by 7-20 times.
Description
Technical field
The present invention relates to fire control technology field, especially, relate to a kind of CAFS fire extinguisher without the need to exterior power.
Background technology
Along with the quickening of Urbanization in China and the increase of economical unit body, the probability that fire occurs also increases thereupon, causes serious loss to the lives and properties of broad masses of the people.The fire increased gradually and bitter lesson, the fire-fighting of broad masses of the people is realized greatly improve, recognize each family, each automobile, each petty dealer, or even the guest room in each hotel, all need to configure a safe and reliable, high-efficiency environment friendly, fire extinguisher simple to operate, fire is eliminated in bud.
And the fire-extinguishing apparatus complicated operation of domestic and external use at present, as the fire distinguisher that professional fire brigade is equipped with, specialty fire fighter has to pass through professional training and could grasp use, even the general personnel of the most common fire extinguisher through instructing training, could must operate.
Full-automatic compressed class A air foam fire extinguishing system (CompressedAirFoamSystem, CAFS) is the class fire extinguisher often used at present.CAFS system, by the water under atmospheric pressure state, first mixes with class A foam stoste by a certain percentage; And then with the premixed in pipeline or water-band by a certain percentage of the air under compressive state; Ejected by CAFS injection apparatus (CAFS big gun or rifle).The mixed proportion of the pressure of water, air and foam, flow and three, has been come by controlling and regulating system, thus has reached the optimum Match of three.
High energy storage foam in CAFS contains a large amount of pressure-airs, by abundant for class A foam aqueous solution refinement and foamed, thus greatly strengthens the ability of infiltrating comburant inside or adhering to comburant surface.CAFS can not only absorb heat, cooling combustion thing, isolation comburant and air, and can rapid osmotic to the inside of comburant, the granularity of refinement water, increases the area coverage of water and absorbs more heat, the most important thing is to prevent the abnormal chemical chain reaction rapidly of combustion process, substantially increase fire-fighting efficiency, and save water for fire extinguishing significantly.
How to optimize the performance of CAFS fire extinguisher further, improving result of use, is in the industry always in the technical problem of Improvement.
Summary of the invention
The object of the invention is to provide a kind of CAFS fire extinguisher without the need to exterior power, to improve the technical problem of existing fire extinguisher coefficient of foaming further.
For achieving the above object, the invention provides a kind of unpowered CAFS fire extinguisher, comprise the gas cylinder and class A foam extinguishing fluid container that are interconnected by gas-liquid mixed communicating pipe, the exit of gas-liquid communicating pipe is connected with foam lance by flexible pipe; Centered by the horizontal middle spindle of the fluid pipeline of spray gun liquid outlet, along fluid direction, the incline direction of the first spray-hole and the second spray-hole focuses on toward center set from periphery.
Preferably, described first spray-hole central axis and the second spray-hole central axis form 15-25 ° of angle.
Preferably, the number of the first spray-hole is 2n, n >=2.
Preferably, the number of the second spray-hole is 1.
Preferably, in gas-liquid mixed communicating pipe, the position that is communicated with in the exit of class A foam extinguishing fluid container is provided with proportioner, is provided with in proportioner and passes into the subsurface pipette of class A foam extinguishing fluid.
Preferably, the operating pressure of class A foam extinguishing fluid container is 0.5-0.8MPa.
Preferably, the compressed air pressure in gas cylinder is 12-13MPa.
Preferably, the first spray-hole even decile on spray gun spray nozzle section circumference.
Preferably, the second spray-hole occupy on spray gun spray nozzle axis.
The present invention has following beneficial effect:
The present invention adopts special frostproof froth n system and bubblejet systems, the first spray-hole towards class A foam extinguishing fluid container direction presents from periphery toward the trend center set with the line towards second spray-hole in spray gun liquid outlet direction, make the coefficient of foaming of class A foam extinguishing chemical solution up to 10 ~ 15 times, thus considerably increase the volume of Unit Weight, decrease the total amount of required extinguishing chemical solution.The part by weight that foam fire-fighting liquid in this device class A foam extinguishing fluid container accounts for water is 0.1%-1%, be usual foam extinguishing fluid consumption 1/10 less than, therefore also have water consumption few, by the few feature of foam volume.
Further, the ratio of compressed air and class A foam extinguishing fluid is about 1:7-20, therefore the mixed liquor of the application is lighter than the water of same volume 7-20 times, and such mixed liquor quality is light, and in operating process, mobility is good.Foam solution makes the surface tension of water reduce, after injecting compressed air, a foam solution is made to become 7-20 fire extinguishing bubble, fire extinguishing effect of each bubble is equivalent to a water and puts out a fire effect, therefore increase surface area and the moisture retention of water, make comburant surface energy continued down, reduce resume combustion danger, fire extinguishing effect improves 7-20 doubly.Reduce in attack time used, water consumption and temperature in the test of degree, compare conventional foam extinguishing device, the application all has advantage.
The fire extinguisher of manufacture of the present invention does not need extra power when working, as long as open by-pass valve control gently, fire extinguisher just can normally work, and greatly improves the operability of equipment.Further, volume is little, lightweight, stores and uses also more for convenience.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structure sectional view of the preferred embodiment of the present invention;
Fig. 2 is the A place enlarged drawing of Fig. 1;
Fig. 3 is the structure top view of the preferred embodiment of the present invention;
Fig. 4 is the first spray-hole structural representation (A of Fig. 2 is to visual angle) of the preferred embodiment of the present invention;
Wherein, 1, casing, 2, pressure-reducing valve, 3, belt, 4, gas cylinder, 5, class A foam extinguishing fluid container, 6. gas-liquid mixed communicating pipe, 7, proportioner, 8, gas-liquid mixed communicating pipe, 9, quck-opening valve, 10, flexible pipe, 11, foam lance, 12, pipette, 13, the first spray-hole, the 14, second spray-hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can limit according to claim and cover is implemented.
See Fig. 1, Fig. 2 and Fig. 3, the application is unpowered CAFS fire extinguisher comprises casing 1 and be arranged in casing 1 by the gas cylinder 4 that is interconnected gas-liquid mixed communicating pipe 6 and class A foam extinguishing fluid container 5, the exit of gas-liquid mixed communicating pipe 6 is connected with foam lance 11 by flexible pipe 10; Centered by the horizontal middle spindle of foam lance 11 fluid pipeline, along fluid direction, the line of the first spray-hole 13 and the second spray-hole 14 presents from periphery toward the trend center set; First spray-hole 13 is towards class A foam extinguishing fluid container direction, and the second spray-hole 14 is towards spray gun liquid outlet direction; First spray-hole 13 is communicated with the second spray-hole 14, forms foam lance 11 liquid outlet channel (being positioned at the first half section part of fluid pipeline).
Be evenly arranged with certain angle centered by the number distribution of the first spray-hole 13 and the axis of the second spray-hole 14, foam solution like this in the first spray-hole 13 and the second spray-hole 14 is in motion process, focusing afterwards fully the more compressed air of impact absorption form more effectively foam, improve extinguishing effect.See Fig. 2, on arbitrary vertical plane, the angle of described first spray-hole central axis and the second spray-hole central axis can be 15-25 °.
Gas required for the whole foamed system be made up of gas cylinder 4, class A foam extinguishing fluid container 5, gas-liquid mixed communicating pipe 6, spray-hole, foam lance 11 is provided by the compressed air body being pressurized to 12-13MPa in gas cylinder, and the operating pressure of class A foam extinguishing fluid container is 0.5-0.8MPa.The adjustment of compressed air and class A foam extinguishing fluid passing ratio device and mixing, ensure that class A foam extinguishing fluid is foamed into the sufficient amount of the gas needed for fire foam, class A foam extinguishing chemical can not be caused to waste.In the equipment course of work, the volume ratio of compressed air and class A foam extinguishing fluid is about 1:7-20, therefore the fire foam of the application is lighter than the water of same volume 7-20 times, and in operating process, mobility is good.The part by weight that the application's foam fire-fighting liquid accounts for water is 0.1%-1%, be usual foam extinguishing fluid consumption 1/10 less than, compare existing foam fire-fighting liquid, more economize in raw materials.
In a particular embodiment, the number of the first spray-hole is 2n, n >=2; Namely the number of the first spray-hole is 4,6,8 ... Deng even number.The number of the second spray-hole is 1 and is positioned on the axis of spray gun spray nozzle, with focusing effect compressed air, improves extinguishing effect.
In addition, in gas-liquid mixed communicating pipe 6, the position that is communicated with in the exit of class A foam extinguishing fluid container 5 is provided with proportioner 7, is provided with in proportioner 7 and passes into the subsurface pipette 12 of class A foam extinguishing fluid.Proportioner can ensure that category-A foaming agent solution foams enough gas, utilizes raw material to maximum efficiency.
Embodiment one,
This equipment standard state is: pressure-reducing valve valve and quck-opening valve are all in closed condition.
During fire extinguisher work, open pressure-reducing valve valve, Pressure gauge display current value.Then open quck-opening valve 9, the gases at high pressure in gas cylinder 4 enter proportioner 7 through gas connection pipe 6 after being reduced pressure by pressure-reducing valve 2, in proportioner, form a negative pressure cavity.Under the effect of negative pressure, the foam solution strictly mixed on request in class A foam extinguishing fluid container 5 is sucked gas and vapor permeation with corresponding proportion (volume ratio 1:7) in proportioner 7 by suction pipe 12.Gas-liquid mixed flows through quck-opening valve and enters gas-liquid mixed communicating pipe 10.Finally by the abundant foaming of foam lance 11, become qualified category-A fire foam and be ejected on the object of burning.The category-A fire foam formed due to this equipment can be adsorbed on burning objects surface effectively, thus has completely cut off the contact of air and burned object, plays the effect of quick extinguishing.
In mixed liquor, major part is compressed air, and the volume ratio of extinguishing fluid and gases at high pressure is about 1:7, therefore lighter than the water of same volume 7 times, and extinguishing fluid quality is light, and in operating process, mobility is good.Fire under same state, fire-extinguishing test is carried out with water, conventional apparatus and this device, test attack time and water consumption respectively, drop to the time of same low temperature from same high-temperature, consequently: conventional foam extinguishing device time used and water consumption are 1/2 of above-water method, be between the 1/2-1/3 of conventional foam extinguishing device with the compressed air foam extinguishing of this device time used and water consumption.It is that the conventional foam device time used is 1/2 of water that temperature reduces test, and this compressed air foam fire-extinguishing apparatus time used is between the 1/2-1/3 of conventional foam device.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a unpowered CAFS fire extinguisher, is characterized in that, comprise the gas cylinder and class A foam extinguishing fluid container that are interconnected by gas-liquid mixed communicating pipe, the exit of gas-liquid communicating pipe is connected with foam lance by flexible pipe; Centered by the horizontal middle spindle of the fluid pipeline of spray gun liquid outlet, along fluid direction, the incline direction of the first spray-hole and the second spray-hole focuses on toward center set from periphery.
2. unpowered CAFS fire extinguisher according to claim 1, is characterized in that, described first spray-hole central axis and the second spray-hole central axis form 15-25 ° of angle.
3. unpowered CAFS fire extinguisher according to claim 1, is characterized in that, the number of the first spray-hole is 2n, n >=2.
4. the unpowered CAFS fire extinguisher according to any one of claims 1 to 3, is characterized in that, the number of the second spray-hole is 1.
5. the unpowered CAFS fire extinguisher according to any one of claims 1 to 3, it is characterized in that, in gas-liquid mixed communicating pipe, the position that is communicated with in the exit of class A foam extinguishing fluid container is provided with proportioner, is provided with in proportioner and passes into the subsurface pipette of class A foam extinguishing fluid.
6. the unpowered CAFS fire extinguisher according to any one of claims 1 to 3, is characterized in that, the operating pressure of class A foam extinguishing fluid container is 0.5-0.8MPa.
7. the unpowered CAFS fire extinguisher according to any one of claims 1 to 3, is characterized in that, the compressed air pressure in gas cylinder is 12-13MPa.
8. the unpowered CAFS fire extinguisher according to any one of claims 1 to 3, is characterized in that, the first spray-hole is even decile on spray gun spray nozzle section circumference.
9. unpowered CAFS fire extinguisher according to claim 8, it is characterized in that, the second spray-hole occupy on spray gun spray nozzle axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610037382.4A CN105435396A (en) | 2016-01-20 | 2016-01-20 | Unpowered CAFS fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610037382.4A CN105435396A (en) | 2016-01-20 | 2016-01-20 | Unpowered CAFS fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105435396A true CN105435396A (en) | 2016-03-30 |
Family
ID=55546305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610037382.4A Pending CN105435396A (en) | 2016-01-20 | 2016-01-20 | Unpowered CAFS fire extinguisher |
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| Country | Link |
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| CN (1) | CN105435396A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2887347Y (en) * | 2005-09-27 | 2007-04-11 | 陈君斌 | Water based water mist spray gun of fire extinguisher |
| CN101318165A (en) * | 2008-07-18 | 2008-12-10 | 韩铁夫 | Self-driving rotary dispensing device |
| CN102939133A (en) * | 2010-06-15 | 2013-02-20 | 丹佛斯塞姆可公司 | Spray head for a uniform fluid distribution and a fluid distribution system |
| CN203280951U (en) * | 2013-05-28 | 2013-11-13 | 中国科学技术大学 | Liquid extinguishing agent atomizing spray gun |
| CN205287331U (en) * | 2016-01-20 | 2016-06-08 | 贝承杰 | Unpowered CAFS fire extinguisher |
-
2016
- 2016-01-20 CN CN201610037382.4A patent/CN105435396A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2887347Y (en) * | 2005-09-27 | 2007-04-11 | 陈君斌 | Water based water mist spray gun of fire extinguisher |
| CN101318165A (en) * | 2008-07-18 | 2008-12-10 | 韩铁夫 | Self-driving rotary dispensing device |
| CN102939133A (en) * | 2010-06-15 | 2013-02-20 | 丹佛斯塞姆可公司 | Spray head for a uniform fluid distribution and a fluid distribution system |
| CN203280951U (en) * | 2013-05-28 | 2013-11-13 | 中国科学技术大学 | Liquid extinguishing agent atomizing spray gun |
| CN205287331U (en) * | 2016-01-20 | 2016-06-08 | 贝承杰 | Unpowered CAFS fire extinguisher |
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Application publication date: 20160330 |