CN102068777A - Portable piston-type water mist fire extinguisher - Google Patents
Portable piston-type water mist fire extinguisher Download PDFInfo
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- CN102068777A CN102068777A CN 201110030397 CN201110030397A CN102068777A CN 102068777 A CN102068777 A CN 102068777A CN 201110030397 CN201110030397 CN 201110030397 CN 201110030397 A CN201110030397 A CN 201110030397A CN 102068777 A CN102068777 A CN 102068777A
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Abstract
The invention discloses a portable piston-type water mist fire extinguisher, which comprises a switch valve assembly (1), a case (3), a piston (4), a base (5), a charge valve assembly (6), a bottom cover (7), a retaining ring for bore (8) and a nozzle (11), wherein the switch valve assembly (1) is arranged at the upper part of the case (3), the piston (4) is arranged in the case (3), the inner cavity of the case (3) is divided into two cavities, wherein the upper cavity is filled with water, the lower cavity is filled high-pressure air, and the base (5) is limited under the case (3) through the retaining ring for bore (8); the charge valve assembly (6) is arranged at the base (5) and is used for filling air into the lower cavity; and the nozzle (11) is arranged at the switch valve assembly (1) and is used for generating fine water mist. The fire extinguisher disclosed by the invention can effectively extinguish various types of fire, can be used at any directions, and can be used under the condition of microgravity. The environment compatibility is good, fire extinguishment efficiency is high, the weight is light, the size is small, the machining and assembly process is simple, the service life is long, and the fire extinguisher is reliable to use.
Description
Technical field
The present invention relates to a kind of hand fire extinguisher, is working media with running water and inert gas.The present invention can be used for fire-fighting system and puts out all kinds fire, especially is suitable for the demanding place of all kinds of protections, and as library, archives, machine room, museum, aircraft etc. also are suitable for putting out under the microgravity condition all kinds of fire.
Background technology
The hand fire extinguisher kind is a lot, mainly is divided into following a few class:
(1) dry powder extinguisher: fill powder extinguishing agent in the dry powder extinguisher.Powder extinguishing agent is be used to put out a fire dry and the attritive powder that is easy to flow, by inorganic salts with fire extinguishing effectiveness and minor amounts of additives drying, pulverize, mix the micro-solid powder constituent.The physics that powder extinguishing agent mainly contacts with flame, takes place when mixing by the powder that sprays under the gas-pressurized effect, chemical action fire extinguishing: the one, the volatility analyte of the inorganic salts in the dry powder, with free radical or active group generation Chemical Inhibition and the secondary catalytic action that fuel produced in the combustion process, make the chain reaction of burning interrupt and put out a fire; The 2nd, the powder of dry powder drops on outside the combustible surface, and chemical reaction takes place, and forms the glassy cover layer of one deck under high temperature action, thus isolated oxygen, and then fire smothering.In addition, also have part to dilute oxygen and cooling effect.Be mainly used to put out flammable liquid or appliances catch fire.
(2) carbon dioxide extinguisher: carbon dioxide extinguishing agent, cheap, obtain, prepare easily, it mainly relies on smothering action and part cooling effect fire extinguishing.What fill in the carbon dioxide extinguishing agent is liquid carbon dioxide, under normal pressure, liquid carbon dioxide can be vaporized immediately, and the liquid carbon dioxide of general 1kg can produce about 0.5 cubic metre gas, when carbon dioxide sprays, can be vaporized into gas rapidly by liquid from reservoir vessel.During fire extinguishing, carbon dioxide can deaeration and be enclosed in the burning object surfaces or be distributed in the more airtight space, reduces around the combustible or the oxygen concentration in the protective zone, produces smothering action and puts out a fire.In addition, during the carbon dioxide vaporization,, can play the effect of cooling from attracting the part heat on every side.Carbon dioxide extinguisher be mainly used in following electrical equipment of the valuable equipment of putting out a fire to save life and property, archives material, instrument and meter, 600 volts and oils from the beginning of fire.Can be used to put out all kinds of catching fire, but be not suitable for that oil oven catches fire or little fire.
(3) foam annihilator: two containers are arranged in the foam annihilator, hold two kinds of liquid respectively: aluminum sulfate and sodium bicarbonate solution, two kinds of solution do not contact mutually, and any chemical reaction does not take place.When the needs foam annihilator, fire extinguisher is stood upside down, two kinds of solution mix, will produce a large amount of carbon dioxides, foam sprays from fire extinguisher, covers on the burning article, make the material and the air insulated of firing, and reduce temperature, reach the purpose of fire extinguishing.Because contain large quantity of moisture in the foam of foam annihilator ejection, it has polluter not as the carbon dioxide liquid fire extinguisher after the fire extinguishing, easily mark.Be applicable to the general category-B fire of putting out a fire to save life and property, as fire such as oil product, greases, also applicable to the category-A fire, but the fire of water-soluble flammable, the flammable liquid in the category-B fire of can not putting out a fire to save life and property, as material fire such as alcohol, ester, ether, ketone; Charging equipment and C class of can not putting out a fire to save life and property and D class fire.
(4) haloalkane fire extinguisher: the extinguishing chemical that fills is a halon extinguishing agent.China has only developed two kinds, and a kind of is difluorochlobromo-methane, is called for short 1211 fire extinguishers, and another kind is 1301 fire extinguishers.Halon extinguishing agent is the general name that replaces the compound with certain extinguishing ability that is generated behind the part or all of hydrogen atom in some lower paraffin hydrocarbon compounds molecules with halogen atom.The fire-fighting efficiency height of haloalkane fire extinguisher, blow-off velocity is fast, when the agent concentration in the fire district reaches critical fire extinguishing value, is generally 5% of volume and just can in seconds even in the shorter time flame be put out.Haloalkane fire extinguisher fire extinguishing is main by suppressing the chemistry reflection process of burning, interrupts the chain reaction of burning and fire extinguishing rapidly belongs to inhibition.Can effectively put out all kinds of fire.
(5) water base fire extinguishing device: refillable water fundamental mode extinguishing chemical in the water base fire extinguishing device, it is made of the water doping.It mainly relies on cooling and smothering action to put out a fire.Every kg water carburation by evaporation can absorb the heat of 2593.4KJ, and in addition, it is inert gas that water is vaporized the steam that the back forms, and volume will expand about 1700 times.When fire extinguishing, the steam that is produced by water vapor will occupy the space of combustion zone, the oxygen content around the dilute combustion thing, hinder fresh air and enter the combustion zone, the oxygen concentration in the combustion zone be reduced greatly, thereby reach the purpose of fire smothering.When water is spray when vaporific, the water droplet of formation and the specific area of droplet will increase greatly, strengthen the heat exchange action between water and the fire, thereby strengthen its cooling and smothering action.In addition, also can play diluting effect to some flammable, flammable liquids soluble in water; That the water smoke that adopts strong jet to produce can make is flammable, flammable liquid produces emulsification, makes that liquid surface cools off rapidly, combustible vapor generation speed descends and reaches the purpose of fire extinguishing.Water base fire extinguishing device is mainly used to put out catching fire of timber, cloth etc.Forbid to be used for putting out the electrical equipment that does not block power supply and catch fire, or flammable liquid (as gasoline, alcohol and edible oil)) catch fire.
In the above-mentioned fire extinguisher of existing market, some has pollution to environment, and as haloalkane fire extinguisher, some applicable situation is limited, is not suitable for places such as library, archive office as foam annihilator, can not effectively put out the electric information fire.Water base fire extinguishing device can not put out the electricity fire.
Portable water mist fire extinguisher be by gases at high pressure with firing-fighting medium---water extrudes by nozzle, forms the very little water fog particle (usually less than 100 μ m) of mist particle diameter.The main mechanism of action of high-pressure water mist fire-extinguishing is to suffocate, cool off and impact.During water vapor, volume increases to more than 1700 times, and forms barrier in this process around flame, stops fresh air to enter, and formation suffocates; Particle was more little when thin water smoke atomized, and surface area is more little, and it is many more to absorb heat, and cooling effect is good more.The effect of fine mist fire-fighting be stressed the influence bigger, in certain pressure limit (0-10MPa), increase along with pressure, thin water smoke mist particle diameter reduces, it is obvious more with cooling effect to suffocate, and speed increases, and jet length increases, can penetrate the hot gas field and enter flame zone and burning surface, percussion is strengthened.
Same carbon dioxide, dry powder, foam, haloalkane fire extinguisher are compared, the fire-fighting efficiency height, and firing-fighting medium easily obtains, and simultaneously, it is environmentally friendly, and personnel are not had injury; Compare with water base fire extinguishing device, it is littler to have a droplet, and water consumption is little, and water damage is little, is suitable for effectively putting out all kinds, particularly electrical fire.
In addition, when fire extinguisher uses on ground, under the effect of gravitational field, liquid has along the trend of gravity direction deposition or layering, density is below big, and is on top light, so conventional fire extinguisher such as water base fire extinguishing device, dry powder extinguisher, extinguishing chemical and gases at high pressure do not have separate storage, but gases at high pressure act directly on the extinguishing chemical.And when gravitational field goes to zero, the medium of different densities will be no longer relatively deposition or layering, but mix each other, thus fire extinguisher use in microgravity condition, should be with extinguishing chemical and gases at high pressure separate storage.
Patent documentation 201010142463 has been announced a kind of fire extinguisher.This fire extinguisher is mainly wrapped by the extinguishing chemical supply and fire gun is formed, and extinguishing chemical is supplied with the main extinguishing chemical of supplying of bag, the rubbery human body of energy pressure-bearing wherein is housed, splendid attire extinguishing chemical in the rubbery human body.Extinguishing chemical in the rubbery human body is discharged under the effect of gases at high pressure.Fire gun is a manual console switch, and both are linked to each other by flexible pipe.This fire fighting with fire extinguisher agent supply contracts out mouth pressure-regulating valve, is used to regulate expulsion pressure, and a plurality of nozzles are housed in the fire gun.This fire extinguisher can make fire gun and operate with the extinguishing chemical apart from each other, but rubbery human body is short following service life in the high pressure operating mode, can not use for a long time, and simultaneously, this fire extinguisher assembling is complicated, and dismounting is not too convenient, and structure is not too compact.
Summary of the invention
For overcoming contaminated environment that existing hand fire extinguisher exists, being not suitable for shortcomings such as all fire extinguishing places, the present invention proposes a kind of novel piston type portable water mist fire extinguisher that can be applicable under conventional gravity and the microgravity condition.This fire extinguisher directly is working media with the running water, not doping, the fire-fighting efficiency height, environmentally friendly, water damage is little, adopt the form of built-in piston, extinguishing chemical and gases at high pressure are separated, and work is not subjected to gravity effect, can effectively put out all kinds fire, and the system architecture compactness, assembling is simple.
The technical scheme that the present invention proposes is:
A kind of piston type portable water mist fire extinguisher comprises the switch valve assembly, housing, piston, base, charge valve assembly, bottom, circlip for hole and nozzle, described switch valve assembly is installed in housing top, and piston is installed in the housing, the housing inner chamber is divided into two chambeies up and down, epicoele water-filling wherein, cavity of resorption fills high pressure gas, and described base is spacing below housing by circlip for hole; Described charge valve assembly is installed on the base, is used for inflating to cavity of resorption; Nozzle is installed on the switch valve assembly, is used to produce thin water smoke.
Further, described switch valve assembly comprises valve body, Pressure gauge, spring pedestal, spring, spool and Handleset, nozzle is installed on the described valve body, and described Pressure gauge and valve body be by being threaded, and spring top contacts with locking nut on the spool, lower support is on spring pedestal, and Handleset is arranged on valve body top.
Further, spool and valve body seal with O type circle, and back-up ring is housed.
Further, described switch valve adopts soft seal, and the gasket seal on the spool is engineering plastics or rubber, and valve body is a metallic matrix, and sealing is reliable, and spool has the face of cylinder to be used for guiding.
Further, described charge valve assembly comprises molding of charge valve cores, the charge valve gasket seal, and charge valve spring and charge valve locking nut, described charge valve gasket seal is contained on the molding of charge valve cores by interference fit; Described charge valve spring one end contacts with base, and the other end is supported on the charge valve locking nut.
Further, the decrement of described charge valve spring is adjusted by described charge valve locking nut.
Further, on the described piston Glais ring is housed, and wear ring is housed.
Further, described high pressure gas is an inert gas.
Further, below the described base bottom is housed.
Portable water mist fire extinguisher of the present invention directly carries out operation with running water as working media, and Environmental compatibility is good; Control valve is simple in structure, and valve port adopts the soft seal form, can realize the positiver sealing to the low viscosity aqueous medium; The built-in piston of system is used for extinguishing chemical and gases at high pressure are separated, and guarantees that it is not subjected to gravity effect; Charge valve and base are integrated, the system architecture compactness.
The invention has the beneficial effects as follows: this fire extinguisher can effectively put out all kinds fire, and can use under microgravity condition.Environmental compatibility is good, the fire-fighting efficiency height.In light weight, volume is little.
Advantage of the present invention is:
1. be working media with the running water, green, environmental protection are not polluted fully to environment;
2. control valve is simple in structure, and valve port adopts the soft seal form, can realize the positiver sealing to the low viscosity aqueous medium;
3. the built-in piston of system is used for extinguishing chemical and gases at high pressure are separated, and guarantees that it is not subjected to gravity effect;
4. bladder fire extinguisher is because stress appears in leather bag pressurising repeatedly, particularly rubber and metal junction easily concentrates and both peel off, thereby influences its life-span.Simultaneously, elastomeric material is aging easily, also is the key factor in bladder fire extinguisher life-span of influence.And adopt piston to isolate extinguishing chemical and gases at high pressure, and compare with bladder fire extinguisher, it is long to have a life-span, compact conformation, outstanding advantage such as technology is simple, easy to assembly.
5. nozzle adopts heavy pressure fine spray single-phase flow nozzle, the nozzle ejection distance, and atomizing effect is good, and water consumption is little;
6. except that can normal upright use, can also tilt to use, stand upside down and use.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a switch valve structural representation of the present invention.
Fig. 3 is a charge valve structural representation of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Portable water mist fire extinguisher of the present invention comprises switch valve assembly 1, housing 3, piston 4, base 5, charge valve assembly 6, bottom 7, circlip for hole 8, nozzle 11.As shown in Figure 1.Nozzle 11 is installed on the switch valve assembly 1, by being threaded; Switch valve assembly 1 is installed on the housing 3, by being threaded; Piston 4 is installed in the housing 3, and the housing inner chamber is divided into two chambeies up and down, piston 4 epicoele water-fillings, and the cavity of resorption inflation for guaranteeing sealing, is equipped with Glais ring 9, and wear ring 10 is housed on the piston 4; Base 5 is arranged on housing 3 bottoms, and is spacing with housing 3 usefulness circlip for holes 8, and guarantees itself and housing 3 good seals with O type circle; Charge valve assembly 6 is installed on the base 5.For making system attractive in appearance, bottom 7 is equipped with in base 5 belows.
The switch valve assembly comprises valve body 101, Pressure gauge 104, spring pedestal 107, spring 108, spool 1011, Handleset 1012.As shown in Figure 2.Nozzle 11 is installed on the valve body 101.The switch valve assembly is threaded with housing 3, and guarantees positiver sealing with O type circle 12.For guaranteeing that switch valve is good at high pressure operating mode lower seal, switch valve adopts the version of soft seal, and gasket seal 106 is a plastic spacer, and the gasket seal lower end has plain cushion 1010 to support.Pressure gauge 104 and valve body 101 are used for monitoring in real time the pressure in the housing 3 by being threaded.Spring 108 tops contact with locking nut 109, and lower support is on spring pedestal 107.For guaranteeing sealing, spool 1011 seals with valve body 101 usefulness O type circles 103, and back-up ring 102 is housed.
Charge valve comprises molding of charge valve cores 601, charge valve gasket seal 602, charge valve spring 603, charge valve locking nut 604.Charge valve gasket seal 602 is contained on the spool 601, interference fit; Gasket seal 602 adopts engineering plastics or rubber, guarantees the soft seal of inflation spool 601 and base 5; Simultaneously, gasket seal and base valve port place all adopt spherical shape, thereby make gasket seal have self-locating function, have further guaranteed the sealing of charge valve.Charge valve spring 603 1 ends contact with base 5, and the other end is supported on the locking nut 604.For guaranteeing the charge valve good seal, charge valve spring 603 will have certain pre compressed magnitude, adjusts with locking nut 604.Reliable for guaranteeing molding of charge valve cores 601 sealings, molding of charge valve cores 601 has the guiding step, guiding step and base 5 endoporus matched in clearance, the position is vertical when installing with the assurance molding of charge valve cores, simultaneously, mill out two planes on the guiding step cylindrical, so that when being in opening during inflation, gases at high pressure pass through.
Operation principle of the present invention is: in the filling process, earlier the switch valve assembly is unloaded, epicoele fills the running water of designated volume in the past housing, loads onto switch valve then, switch valve is in closed condition, then extraneous high-pressure air source is connected with base, molding of charge valve cores 601 is backed down, begin inflation, fill finish after, housing 3 inner carriers 4 epicoeles are full of water, and cavity of resorption is full of high-pressure inert gas, and Glais ring 9 guarantees that water and high pressure gas do not interpenetrate.In the course of work, the switch valve handle is depressed, acted on spool 1011, compression spring 108, switch valve is opened.Under the effect of high pressure gas, move outwards draining, water under high pressure ejection after spool 1011 enters nozzle 11 atomizings on the piston 4.After work is finished,, need the remaining gas release of cavity of resorption in the housing 3 if need fill again.
Claims (10)
1. piston type portable water mist fire extinguisher, comprise switch valve assembly (1), housing (3), piston (4), base (5), charge valve assembly (6), bottom (7), circlip for hole (8) and nozzle (11), described switch valve assembly (1) are installed in housing (3) top, and described piston (4) is installed in the housing (3), this housing (3) inner chamber is divided into two chambeies up and down, epicoele water-filling wherein, cavity of resorption fills high pressure gas, and described base (5) is spacing in housing (3) below by circlip for hole (8); Described charge valve assembly (6) is installed on the base (5), is used for to the inflation of described housing (3) cavity of resorption, and described nozzle (11) is installed on the switch valve assembly (1), is used to produce thin water smoke.
2. fire extinguisher according to claim 1, it is characterized in that, described switch valve assembly (1) comprises valve body (101), Pressure gauge (104), spring pedestal (107), spring (108), spool (1011) and Handleset (1012), described nozzle (11) is installed on the described valve body (101), described Pressure gauge (104) is threaded with valve body (101), described spring (108) top contacts with locking nut (109) on the spool (1011), and lower support is on spring pedestal (107), and described Handleset (1012) is arranged on valve body (101) top.
3. fire extinguisher according to claim 2 is characterized in that, seals by O type circle (103) between described spool (1011) and the valve body (101), and back-up ring (102) is housed.
4. according to the described fire extinguisher of one of claim 1-3, it is characterized in that described switch valve assembly (1) adopts soft seal.
5. according to the described fire extinguisher of one of claim 1-4, it is characterized in that, described charge valve assembly (6) comprises molding of charge valve cores (601), charge valve gasket seal (602), charge valve spring (603) and charge valve locking nut (604), described charge valve gasket seal (602) is contained on the molding of charge valve cores (601) by interference fit, described charge valve spring (603) one ends contact with described base (5), and the other end is supported on the charge valve locking nut (604) of charge valve assembly (6) bottom.
6. fire extinguisher according to claim 5 is characterized in that, the decrement of described charge valve spring (603) is adjusted by described charge valve locking nut (603).
7. according to claim 5 or 6 described fire extinguishers, it is characterized in that described charge valve gasket seal (602) adopts engineering plastics or rubber.
8. according to the described fire extinguisher of one of claim 1-7, it is characterized in that described piston (4) seals described epicoele and cavity of resorption slidably in housing (3) inner chamber, Glais ring (9) is housed on this piston (4), and wear ring (10) is housed.
9. according to the described fire extinguisher of one of claim 1-8, it is characterized in that described high pressure gas is an inert gas.
10. according to the described fire extinguisher of one of claim 1-9, it is characterized in that bottom (7) is equipped with in described base (5) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030397 CN102068777A (en) | 2011-01-26 | 2011-01-26 | Portable piston-type water mist fire extinguisher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030397 CN102068777A (en) | 2011-01-26 | 2011-01-26 | Portable piston-type water mist fire extinguisher |
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| CN102068777A true CN102068777A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110030397 Pending CN102068777A (en) | 2011-01-26 | 2011-01-26 | Portable piston-type water mist fire extinguisher |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597252A (en) * | 2016-03-08 | 2016-05-25 | 王晓勇 | Portable high-pressure water mist fire extinguisher |
| CN105641836A (en) * | 2016-03-16 | 2016-06-08 | 江苏中远消防设备有限公司 | Household fire extinguisher with functions of pressure display and reuse |
| CN105999590A (en) * | 2016-07-22 | 2016-10-12 | 中国矿业大学(北京) | Real-time monitoring and active fire extinguishing method and device |
| CN107335160A (en) * | 2017-06-20 | 2017-11-10 | 合肥工业大学 | A kind of fine spray extinguisher of piston driving |
| CN111973914A (en) * | 2020-08-13 | 2020-11-24 | 深圳市朗驰欣创科技股份有限公司 | Transformer substation wheel type inspection robot with automatic fire extinguishing function |
| CN113827894A (en) * | 2021-09-10 | 2021-12-24 | 柳州铁道职业技术学院 | Fire extinguisher with automatic fire extinguishing function |
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| US3719231A (en) * | 1971-05-14 | 1973-03-06 | K Haggard | Attachment for automatic override of manually operated compressed gas fire extinguishers and alarms |
| CN2053518U (en) * | 1989-04-04 | 1990-02-28 | 慈溪县周巷轻工机械厂 | Microsize fire-extinguishing rod |
| CN1399574A (en) * | 1999-11-25 | 2003-02-26 | 南润尚 | Fire extinguisher |
| CN201304242Y (en) * | 2008-11-20 | 2009-09-09 | 庄德诚 | Air-filled toy with spring structure uni-directional gas charging valve |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3719231A (en) * | 1971-05-14 | 1973-03-06 | K Haggard | Attachment for automatic override of manually operated compressed gas fire extinguishers and alarms |
| CN2053518U (en) * | 1989-04-04 | 1990-02-28 | 慈溪县周巷轻工机械厂 | Microsize fire-extinguishing rod |
| CN1399574A (en) * | 1999-11-25 | 2003-02-26 | 南润尚 | Fire extinguisher |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597252A (en) * | 2016-03-08 | 2016-05-25 | 王晓勇 | Portable high-pressure water mist fire extinguisher |
| CN105641836A (en) * | 2016-03-16 | 2016-06-08 | 江苏中远消防设备有限公司 | Household fire extinguisher with functions of pressure display and reuse |
| CN105999590A (en) * | 2016-07-22 | 2016-10-12 | 中国矿业大学(北京) | Real-time monitoring and active fire extinguishing method and device |
| CN107335160A (en) * | 2017-06-20 | 2017-11-10 | 合肥工业大学 | A kind of fine spray extinguisher of piston driving |
| CN111973914A (en) * | 2020-08-13 | 2020-11-24 | 深圳市朗驰欣创科技股份有限公司 | Transformer substation wheel type inspection robot with automatic fire extinguishing function |
| CN113827894A (en) * | 2021-09-10 | 2021-12-24 | 柳州铁道职业技术学院 | Fire extinguisher with automatic fire extinguishing function |
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Application publication date: 20110525 |