Method of fire extinguishing with nanopowder using powder fire extinguisher and powder fire extinguisher

FIELD: fire safety.

SUBSTANCE: invention refers to extinguishing powders made in the form of a nanopowder. Core of the proposed device is that in a powder fire extinguisher comprising a housing filled with a fire-extinguishing powder, a device for its discharge and supply to the body of fire, a stop-start device and a powder sprayer in the controlled zone, the fire-extinguishing powder is made in the form of a nanopowder. Powder fire extinguisher contains a housing filled with a fire-extinguishing powder, a device for its discharge and supply to the body of fire, a stop-start device and a powder sprayer in the controlled zone, the fire-extinguishing powder is made in the form of a nanopowder.

EFFECT: proposed technical solution is easy in operation and can be used in a normal powder fire extinguisher to supply the nanopowder in case of fire to the controlled zone.

2 cl, 1 dwg

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: first step includes obtaining low-hydroxylated insoluble fullerenols by reacting concentrated fullerene solution in o-xylene with aqueous ammonia solution in the presence of a tetrabutylammonium hydroxide phase-transfer catalyst at 35-40C. At the second step, the obtained low-hydroxylated insoluble fullerenols are hydroxylated to transform them into a water-soluble form by mixing with 6-15% aqueous hydrogen peroxide solution and heating for 4-5 hours at 65C. Water-soluble fullerenols are then precipitated from an alcohol-containing solution.

EFFECT: simplifying the method while preserving quality characteristics and full extraction of the end product.

2 cl, 1 dwg, 4 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to nanotechnology, particularly a method of producing aspirin nanocapsules in a carrageenan envelope. The disclosed method includes preparing an aspirin suspension in benzene; dispersing the obtained mixture into a carrageenan suspension in butanol in the presence of an E472c preparation while mixing at 1000 rps; adding tetrachloromethane; filtering the obtained nanocapsule suspension and drying at room temperature.

EFFECT: method provides a simpler and faster process of producing nanocapsules and increases mass output.

1 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to encapsulation, particularly to a method of producing albendazole nanocapsules in a sodium alginate envelope. The disclosed method includes adding albendazole to a sodium alginate suspension in hexane in the presence of an E472c preparation while mixing at 1000 rps. The weight ratio of albendazole and sodium alginate is 1:3 or 3:1. Further, 1,2-dichloroethane is added. The obtained suspension of nanocapsules is filtered, washed and dried. The process of producing the nanocapsules is carried out at 25C for 20 minutes.

EFFECT: invention provides a simpler and faster process of producing nanocapsules, reduces losses during production thereof (high mass output).

3 ex, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to encapsulation, particularly a method of producing resveratrol nanocapsules in an envelope made of low- or highly esterified apple or citrus pectin. According to the disclosed method, resveratrol is dispersed in a suspension of low- or highly esterified apple or citrus pectin in benzene in the presence of an E472c preparation while stirring at 1000 rps. Tetrachloromethane is then added. The obtained suspension of nanocapsules is filtered and dried. The process of producing the nanocapsules is carried out at 25C for 10 minutes.

EFFECT: invention provides a simpler and faster process of producing nanocapsules, reduces losses during production thereof (high mass output).

9 ex, 1 dwg

FIELD: nanotechnology.

SUBSTANCE: according to the invention method, albendazole is added to the suspension of sodium alginate in butanol in the presence of the preparation E472s when stirring at 1000 revolutions per second. The mass ratio of albendazole and sodium alginate is 1:3 or 3:1. Then acetonitrile is added. The resulting suspension of the nanocapsules is filtered, washed, and dried. The process of production of nanocapsules is carried out at 25C for 20 min.

EFFECT: simplification and acceleration of the process of production of nanocapsules, reduction of losses in their production.

1 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: according to the method a suspension of resveratrol in heptane was dispersed into a suspension of xanthan gum in butanol in the presence of E472c under stirring at the rate of 1000 rev/s. A mixture of benzene and water taken at a volume ratio of 5:1 or 3:1 was added to the said suspension. The resulted suspension of nanocapsules was filtered, washed and dried. The process was performed at a temperature of 25C within 10 min.

EFFECT: simplified and fast process of nanocapsule production, reduced process losses.

4 ex, 2 dwg

FIELD: nanotechnology.

SUBSTANCE: suspension of aspirin in benzene is produced. The resulting mixture is dispersed into suspension of sodium alginate in butanol in the presence of the preparation E472s when stirring at 1000 rpm/sec. Then chloroform is poured, the resulting suspension of nanocapsules is filtered and dried at room temperature.

EFFECT: simplification and acceleration of the process of production of the nanocapsules, and increase in the yield by weight.

1 dwg, 4 ex

FIELD: medicine.

SUBSTANCE: invention represents a method for preparing a sterile nanoemulsion of perfluororganic compounds (PFOC) involving: adding a PFOC mixture to an aqueous solution of a stabilising agent; homogenising the PFOC mixture with the aqueous solution of the stabilising agent to produce a PFOC pre-emulsion; mixing the PFOC pre-emulsion with a salt-water solution to produce the PFOC nanoemulsion; keeping the PFOC nanoemulsion at a temperature from 2 to 10C for at least 18 hours. The method can be also implemented as follows: pre-filling a circulation loop of a PFOC nanoemulsion generating plant with the aqueous solution of the stabilising agent; adding the PFOC mixture to the aqueous solution of the stabilising agent; homogenising the PFOC mixture with the aqueous solution of the stabilising agent to produce the PFOC pre-emulsion; mixing the PFOC pre-emulsion with the salt-water solution to produce the PFOC nanoemulsion.

EFFECT: higher stability of the PFOC emulsion and prolonging the storage life.

30 cl, 7 ex, 5 tbl, 1 dwg

FIELD: nanotechnology.

SUBSTANCE: shell of the nanocapsules is used as apple or citrus high- or low-esterified pectin, and the core - as L-arginine. According to the inventive method, L-arginine is suspended in benzene, the resulting mixture is dispersed into a suspension of apple or citrus high- or low-esterified pectin in benzene in the presence of the preparation E472s while stirring 1000 revolutions per second. Then carbon tetrachloride is added, the resulting suspension of the nanocapsules is filtered and dried at room temperature. The process is carried out for 15 minutes.

EFFECT: simplification and acceleration of the process of producing the nanocapsules, and increase in the yield by weight.

6 ex

FIELD: nanotechnology.

SUBSTANCE: method of production of nanocapsules of vitamin in sodium alginate is characterized in that the shell is used as sodium alginate, and the core - as the vitamin, in a weight ratio of core:shell as 1:3. According to the method of preparing the nanocapsules the vitamin is added to a suspension of sodium alginate in benzene in the presence of the preparation E472s while stirring at 1300 rev/sec. Then hexane is added, the resulting suspension is filtered and dried at room temperature.

EFFECT: simplification and acceleration of the process of production of the nanocapsules, and increase in the yield by weight.

3 dwg, 8 ex

FIELD: fire safety.

SUBSTANCE: generator of fire-extinguishing aerosol contains pyrotechnical stick with ignition assembly, installed on bottom of one of two dish-shaped casing tanks coated from inside with the functional layer out of solidified material, that are opposite connected by flangings, creating output slot nozzle, at that the functional layer of the top tank is enclosed by the perforated shell, and above the open end of the stick a receiver is formed, it via the reverse ring channel is connected with output slot nozzle. According to the invention the reverse ring channel between the perforated shell and open part of the pyrotechnical stick is connected with the output slot nozzle and is limited by the end of the functional layer adjacent to the bottom tank flanging, that closes gap between the bottom tank and stick. The suggested technical solution determined automatic two-stage action of the generator during serial modes: initially intensive burning of the pyrotechnical stick over the developed open surface, with high delivery of the extinguishing liquid, and then slow make-up of the additional aerosol until achievement of the extinguishing concentration.

EFFECT: as result of the stage supply of the generated aerosol intensity of filling of the protected object reduced, resulting in abrupt decreasing of its losses via slits, clearances, plays in the room, and ensured long-term inhibition of the fire extinguishing.

1 dwg

FIELD: fire safety.

SUBSTANCE: procedure for obtaining of gas-powder mixture contains aeration of the fire-extinguishing powder by means of compressed air supply using aeration devices located in bottom part of the tank and connected with compressed air source to the cavity of the tight tank with fire-extinguishing powder. When in the specified tank work pressure is achieved via the siphon pipe the created gas-powder mixture is removed from this tank with further creation using the appropriate means of the single jet or multi-jet flow of the gas-powder mixture supplied to the fire source. The gas-powder mixture removed from the specified tank is accelerated in the specified siphon pipe by means of the compressed gas jet supply to the siphon pipe via its inlet hole and coaxial with it, at that ensuring possibility of the ejection in the siphon pipe of gas-powder mixture created in the tank. Devices for the compressed gas jet supply in the siphon pipe via its inlet hole and coaxially with it are made as nozzle with channel having permanent or variable cross-section coaxially installed relatively to the axis of the siphon pipe for the compressed gas jet supply to the siphon pipe via its inlet hole; at that the nozzle is connected either with the same compressed air source as the aeration devices of the fire-extinguishing powder in the tank, or with the appropriate compressed air source.

EFFECT: improved efficiency and quick action of fire fighting system.

3 cl, 2 dwg

FIELD: fire prevention facilities.

SUBSTANCE: invention relates to portable fire extinguishing installations. At that the installation of mobile fire extinguishing consists of a portable means of fire extinguishing which is stored-pressure extinguisher filled with inflammable liquid, with a manual lock and release device and a liquid supply system with a foam generator, additionally comprises a gas (air) delivery system, which comprises a microswitch mounted on the lock and release device, so that when starting the fire extinguisher at the same time the compact compressor is switched on, powered by a portable battery unit. At that the foam generator comprises a dispenser, a foam nozzle and a two-phase flow divider, the dispenser is connected to the housing of the foam nozzle made in the form of a cylindrical shell, at that mounted coaxially and axially relative to the dispenser and on the foam nozzle housing, at a part located closer to the dispenser, at least three windows for ejecting air are made, and at the output a two-phase flow divider is secured, made in the form of a circular grid, and the dispenser housing is made with a channel for supplying the liquid and has a coaxial sleeve rigidly connected with the housing with a nozzle fixed at its lower part, at that made in the form of a two-step cylindrical sleeve, which upper cylindrical stage is connected by a threaded connection to the central core mounted with an annular gap towards the inner surface of the cylindrical sleeve and which consists of a cylindrical part with a swirler fixed coaxially at its lower part, made in the form of a cylinder with a central orifice. At that on the outer surface of which at least double-lead screw thread is made.

EFFECT: increased efficiency of fire extinguishing of different classes by using high-expansion air filled foam.

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to portable fire extinguishing units. The portable fire extinguisher comprises a portable fire extinguishing unit which is a stored-pressure extinguisher. The fire extinguisher is filled with non-flammable liquid, with a hand operated lock-start gear and a system of liquid supply with the foam generator. Additionally it comprises a gas supply system which comprises a microswitch. The microswitch is mounted on the lock-start gear so that when starting the fire extinguisher the compact compressor is switched on simultaneously. The compressor is powered by a portable battery pack.

EFFECT: increased efficiency of fire extinguishing of different classes by the use of high-expansion air filled foam.

3 cl, 2 dwg

Extinguisher // 2460557

FIELD: fire-fighting means.

SUBSTANCE: invention relates to powder fire extinguishers and is designed for fire fighting. Fire extinguisher comprises a cylindrical body with a bottom and a welded lid, on the inner surface of which in a cartridge a neck collar is mounted. The top end of the neck collar is designed as an annular sealing ledge, which after assembly is adjacent to the inner surface of the welded lid. The neck collar is equipped with an internal threaded channel for installation of the start-up device and on the outside with a longitudinal groove, which includes a locking ledge of the cartridge. The neck collar preferably may be made of polymer material by method of casting or compression. The start-up device includes a head with the striker and a spring. At the head the start-up handle is mounted. Between the neck collar and the start-up device the O-ring is mounted.

EFFECT: constructive implementation of the elements of the body lid of a fire extinguisher provides increased reliability of the fire extinguisher and provides ease of manufacture and assembly.

5 cl, 3 dwg

FIELD: fire safety.

SUBSTANCE: invention relates to fire suppression, namely, to methods for extinguishing fire with finely pulverised water and can be used for fighting fire on ships and water-crafts, as well as other important facilities.

EFFECT: increased efficiency of extinguishing fires due to improving the fire extinguishing properties of finely pulverised water by optimisation of its dispersion, is achieved by the fact that at pre-treatment of water with a constant magnetic field with strength of 40-45103 A/m at a motion speed of stream of 0,4-0,5 m/s and with passing water through the proposed device with a voltage of a DC electric field of 30-50 V/mm, the uniformity of negatively charged water droplets of optimal size increases twice.

FIELD: fire-fighting means.

SUBSTANCE: invention refers to devices for fire extinguishing agent supply to a fire source. An extinguisher cylinder wherein a dry powder is put comprises a metal-bonded glass bottle of the length 500 mm and diameter 54 mm, and in the middle of the glass filled with the powder, there is a layer of a special solid substance transformed in a gaseous state at temperature 100C.

EFFECT: higher performance speed and reliability of the extinguisher that provides effective fire protection of the process equipment.

1 dwg

FIELD: medicine, life saving equipment.

SUBSTANCE: method of volume firefighting and related equipment enables to increase efficiency of firefighting procedures due to decreased temperature and losses of fire-control aerosol by introduction thereof with pyrotechnic composition resulted from combustion, thus charges are inflamed from lower non-reserved end face, and produced aerosol is let through channels between charges and through cellular plaster filter. Thereafter aerosol is exhausted to protected volume through clearances of outlet cone. Firefighting unit consists of working body, injector assembly and two fire-resistant grids, and also contains block cellular plaster filter for aerosol cooling, mounted between fire-resistant grids, and outlet cone for uniform distribution of produced aerosol.

EFFECT: provided increase of firefighting efficiency.

2 cl, 3 dwg

FIELD: mechanics.

SUBSTANCE: lock and release mechanism for extinguisher includes head attached to a container. The head is provided with inlet and outlet channels for fire extinguishing agent supply. Bushing with flange from one side and circular bead from the other side is threaded into the housing. Rod is spring-loaded with regard to head and installed into bushing hole to enable interaction of locking element with circular bead acting as valve seat. Pivoted steering lever and handle for transportation with fastening base are located inside head at an angle to head axis. To fix handle under bushing flange, handle base is provided with tie-down slot covering bushing under flange and pressing handle base to head. Pivoted lever with threaded hole is attached to rod via pusher being in the shape of screw with retainer nut. Head material is profiled iron of aluminium alloy. It is processed by pressing and drawing method. Bushing material is brass.

EFFECT: improvement of operational reliability and reduction of mechanism repair cost and price.

4 cl, 4 dwg

FIELD: mechanics.

SUBSTANCE: invention can be used in closed or semi closed spaces. To increase reliability of performance generator comprises case with a cylinder shaped coat and with solid and perforated bottoms, charge with aerosol forming composition, cooling unit fixed at one side with the perforated bottom, and from the side of the charge -with a perforated partition. Linear bushing with a perforated side surface is situated within the inside surface of the solid bottom along the axis of the case. Charge is of multi blocks and consists of one central and least two peripheral cylinder shaped blocks, at that the central cylinder block is located along the axis of the case allowing it to be supported at one end with a linear bushing, and at the other end with the perforated partition; peripheral cylinder blocks are situated lengthwise with an axial set off against the central block along the circumference between the central block and the cylinder coat of the case; inducer with a trigger is assembled inside the linear bushing.

EFFECT: increase of efficiency of large scale fire fighting.

3 cl, 2 dwg

FIELD: masking.

SUBSTANCE: the masking foam material is dispersed by means of a pulse distributor, which is preliminarily installed on the surface of the background and/or object in compliance with the plan of masking. The pulse distributor by means of a supply network is connected to the control panel, having an electric power source, or it is provided with a radio command actuator with an electric power source, and connected to a radio command control panel. The time and procedure of actuation of the pulse distributor is selected in compliance with the plan of masking. The pulse distributor of masking foam material has a sealed body with a solution. The body with the source solution is provided with a siphon, two valves and a guide. A packing having an opening and distribution assembly, actuating and safety, assemblies, is installed on the body neck. The body neck is integrated with the siphon cylinder, and a splash-out monitoring system is additionally installed on the device body, aligned with the stopper of the packing safety assembly. The valves are installed at the upper and lower levels of the body.

EFFECT: enhanced efficiency of masking.

17 cl, 5 dwg, 1 tbl

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