Generator of fire-extinguishing aerosol
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.
The invention relates to fire technique, and more particularly to devices of the automatic extinguishing of fires generated by combustion of pyrotechnic composition checkers aerosol flame retardants, orderly routed to the protected volume, which are intended for use on vehicles in the warehouse and industrial premises.
The level of art characterizes the aerosol fire extinguishing generator, described in patent RU 2237503, A62C 13/00, 2003, which includes a housing composed of two counter-bonded containers disc shape with a gap between their flanging, forming the output slit nozzle, generating extinguishing gas-aerosol mixture pyrotechnic charges attached in both hull tanks flush with the ends of the heat-shielding interlayer, filling flanging containers of the hull, with foam padding, covered by the end face of the sealing composition, and associated with the originating device and the igniter.
A feature of this generator is that the igniter is made in the form of a resistor placed inside the adhesive of the igniter, which is installed coaxially in the gap between the pyrotechnic charges, forming a checker generating an aerosol, which increases the reliability of initi�of ignition.
Simultaneous ignition of both charges checkers provides them face burning, intensifying the formation of extinguishing mixture.
However, the generator is inherent drawback, which is expressed in a concomitant increase in pressure inside the generator that requires structural strengthening of load-bearing elements.
In a joint combustion of charges in checkers total arise of gas-dynamic instability due to the interaction of gas flows, pressure drops in the combustion fronts, causing pressure pulsations and different burning rate, decreasing the height of the pyrotechnic charges checkers.
As a result of the functional reliability of protection of the calculated volume of the room is reduced, it is therefore necessary to use additional parallel generator, which increases capital costs.
More perfect is the aerosol fire extinguishing generator according to the patent RU 74813 U1, A62C 13/00, A62C 3/00, 2008 (claim 1 of the formula), which is the technical essence and the number of matching characteristics is selected as the closest analogue of the proposed generator.
Known aerosol fire extinguishing generator includes a pyrotechnic grenade, mounted in a housing formed of two Cup-shaped containers, a counter coupled flare, formooborota outlet nozzle slit between filling their PR�puffs from construction plaster and axisymmetric igniter.
Flanging containers fenced enclosure perforated shells forming an annular reverse channel in collaboration with the Central gas-permeable casing, bearing a single pyrotechnic grenade, mounted on the bottom of one of the tank corps.
Opposite the open end checkers, where is mounted the igniter, forms together with the bottom of the second container body receiver communicating with deaf reverse channel.
Perforated casing with pyrotechnic piece is rigidly connected by means of a carrier layer of building plaster.
This compact easy to assemble the generator is more efficient fire fighting.
Stationary regime stratified combustion end of a single pyrotechnic checkers provides a stable settlement gotprint products extinguishing mixture, lowering the temperature inside the generator which is provided by equipping it with new structural elements, form, execution and new relationships.
Perforated sidewall adjacent to the flanging of the housing, and a Central perforated casing that are associated with functional layers of plaster, perform additional functions in the device for cooling the heat exchanger in the form of a reversible annular channel.
Organized convective �plooman washing with reversals aerosol stream before discharge into the protected volume provides effective selection of thermal energy.
This structural water building plaster rapidly evaporated and through the perforations forming the reverse channel surfaces transverse colliding jets is actively mixed with the hot products of combustion checkers, diluting and cooling them.
In the reverse channel, the inhibition of gas-aerosol flow ratio of it to evaporate from the gypsum with water, the pressure and lowering the temperature of the fire extinguishing mixture by kinetic and convective mixing before emission of the radial jet flow into the protected volume.
The constructive relationship of the gas-permeable casing carrying a pyrotechnic grenade, tanks tank creates a labyrinth flow inside the generator, ensuring the rational use of structural elements in new capacity for active cooling extinguishing mixture inside the generator.
Performing a reversible annular channel stub sent to the additional flow reversal generated extinguishing mixture, counter flowing to the output delavau the nozzle.
The combustion of the pyrotechnic charge single checkers with one end provides stable during the time functioning gotprint extinguishing mixture, which may be output via the auxiliary cooling device, the receiver and reverse kolavennu relatively large volume.
However, a continuation of the marked advantages are inherent disadvantages.
Stationary mode end layer-by-layer combustion of the pyrotechnic checkers provides intensive feeding in the protected volume of the generated aerosol for fast creation of extinguishing concentration of flame retardants, but through the cracks, looseness of connectors and other backlash injected gas-aerosol mixture, respectively surges outwards, resulting in possible occurrence of secondary fires from smoldering materials.
Because of gravitational settling of extinguishing mixture is formed a concentration gradient flame retardants that may cause fires.
In addition, in a dead-end reverse channel formed stagnant zones of the aerosol, in which there is agglomeration of the dispersed phase deposited on perforated surfaces, thereby reducing the efficiency of fire.
The technical problem to be solved by the present invention is to increase the functional reliability of the generator and the efficiency of operation by appointment.
The required technical result is achieved in that in the known aerosol fire extinguishing generator containing a pyrotechnic grenade, mounted on the bottom of one of the two hull vessels disc-shaped, covered IsNot�and functional layer of curable material, which counter are connected by flanging, forming the output slit nozzle, wherein the functional layer of the upper capacity fenced perforated sidewall and an open end formed checkers receiver communicating via a reversible annular channel with the output gap nozzle according to the invention, a reversible annular channel between the perforated sidewall and the open part of the pyrotechnic checkers is associated with the output gap nozzle while limiting adjacent to the flanging of the bottom tank end face of the functional layer, which covers the gap between the bottom tank and checker.
The distinctive features of the proposed technical solution defined automatic two-stage action of the generator in a sequential modes: first, when burning pyrotechnic checkers developed on the exposed surface, with high output extinguishing mixture to dynamically populate the protected volume, and then, when you reach the combustion front level continuous layer of gypsum in the bottom of the container when the checkers burning occurs end-layered, slow feeding an additional amount of aerosol to achieve the extinguishing concentration.
As a result of stepwise feed of the generated aerosol dropped the intensity of the fill of the protected volume, leading to drastically reduced�th losses through the cracks clearances, backlash in the room and provided a prolonged inhibition of extinguishing action.
Less intense flow of generated aerosol in the second mode of combustion of the pyrotechnic checkers provides backwater extinguishing mixture in the protected space in a suspended state that more effectively inhibits combustion.
At the same time achieve the extinguishing concentrations of flame retardants in the volume of the space, compared with the prototype reduced by 40%, from 50 C to 35 C.
Filling the gap between the pyrotechnic checkers and Donna capacity to the level of her flanging allowed to exclude stubs ring reverse channel and its stagnant zones, where agglomeration and loss of the aerosol.
Mount pyrotechnic checkers directly in plaster, without perforated Central casing and sides of the fence, significantly simplifies the manufacturing technology of the generator, thereby reducing its value.
Therefore, every essential feature needed, and their combination in a stable relationship is sufficient to achieve novelty quality, extrinsic signs of dissociation, that is supplied in the utility model technical problem is solved not by the amount of effects and new shoreface the amount of features.
The essence of the proposed invention is illustrated by line�Ohm, which has a purely illustrative purpose and do not limit the scope of the claims the essential features of the formula. The drawing shows the upgraded aerosol fire extinguishing generator.
Carrying the generator housing is made of two identical tanks 1 and 2 of plate shape, a counter coupled flare 3 with the formation of the output slotted nozzle 4 between them.
The flange 3 is rigidly fastened evenly distributed around the perimeter of bolts 5, a torque washer 6 between which troobleshoot annular nozzle 4 of a specified profile and flow section.
At the bottom of the tank 2 (lower in the drawing) via the functional layer 7 of curable material, preferably of plaster attached pyrotechnic checker 8, during combustion which is generated extinguishing gaseous mixture of flame retardants.
In the solution construction plaster poured into the container 2, free and easy (before curing) pyrotechnic set piece 8, which is rigidly fixed layer 7 of the hardened plaster, tightly adjacent to the profile of the bottom of the container 2, the end face of the layer 7 is located at the level of its flanging 3.
In this part of the lateral surface of the pyrotechnic checkers 8, located in the upper container 1 and is located above the end face of the layer 7 remains �open.
At the open end checkers 8, spaced at a distance from the bottom of the upper tank 2, forming a receiver 9, is mounted igniter charge from 10 sensitive to the heat pulse train that is generated by glowing of an electric resistor bridge, built inside of the igniter charge 10 (not shown) and by means of a cord 11 connected to the terminal pads 12 supply from the external trigger device.
Insulating layer 13 of the plaster covering the perimeter of the container 1, fenced mounted equidistant perforated sidewall 14 that is permeable to steam when heated, the structural water of gypsum.
The receiver 9 through the annular reverse channel 15 (between the open side surface checkers 8 and a perforated sidewall 14), which is bounded from below by the face of the interlayer 7, communicates with the output gap nozzle 4.
On radial threaded axles 16, diametrically fixed in the interlayer 13 through the through hole in the tank 1, installed the bracket 17 for mounting the generator on load-bearing surfaces in the protected area.
The bracket 17 is a block 12 of the telecommunication igniter charge 10 with sensor fire alarm - external starting device.
Operates the aerosol fire extinguishing generator as follows.
When the initi�probing the igniter 10 is switched manually or automatically by the pulse from the sensor fire alarm heat pulse ignites the pyrotechnic grenade 8.
As a result of combustion checkers 8 to open the developed surface of the generated gaseous products are condensed and dispersed phase of the aerosol is received in the receiver 9 and then into the annular reverse channel 15, where they are mixed, expand and decelerate, and when pressure compensation.
The flame heats the perforated shell 14, with radiation from which the gypsum layer 13 is evaporated structural water flowing through the perforations distributed transverse jets in the receiver 9 and the channel 15, diluting and cooling the fire-extinguishing aerosol.
After an intense filling volume of the gas-aerosol generator products flux reflected from the end face of the interlayer 7, expands and is ejected through the slit nozzle 4 extending annular flow volume of the protected space, filling the space.
Thus inhibitors of combustion (gaseous and fine condensed particles) contained in the fire extinguishing mixtures, actively enter into a chemical reaction and interrupt the chain reaction of combustion, resulting in fire suppressed.
Further, when burning quickly open part of the checkers 8, combustion occurs in layers with its end, as the side surface of the armored termozaschitnym plaster layer 7, resulting in reduced intensity of feeding extinguishing cm�si in the protected volume, where it pushes the cooled aerosol in place, preventing it settling.
Additional flow in the protected volume of the gas-aerosol mixture ensures the achievement of extinguishing concentration of flame retardants, resulting in a fire suppressed and does not occur again.
Comparison of the proposed technical solutions to identified analogues of the prior art has not revealed exact matches are the essential features of the invention.
Proposed differences between the aerosol fire extinguishing generator are not obvious to a person skilled in fire fighting techniques, which directly follow from the statement of the technical problem.
The production of the totality of the structural elements of the generator in their relationship it is possible to implement on existing production, where generators are manufactured counterparts on existing technology.
From the above we can conclude that the invention meets the patentability requirements.
Tests of prototypes of the proposed aerosol fire extinguishing generator confirmed the positive results on the reliability specified in the regulations with increased efficiency of operation by appointment, which allows us to recommend technological design for commercial production and post�VKI customers.
The aerosol fire extinguishing generator containing the feature triggering unit pyrotechnic grenade, mounted on the bottom of one of the two hull vessels disc shape, inside is covered with a functional layer of curable material, which counter joined by flanging, forming the output slit nozzle, wherein the functional layer of the upper capacity fenced perforated sidewall and an open end formed checkers receiver communicating via a reversible annular channel with the output gap nozzle, characterized in that the reversible annular channel between the perforated sidewall and the open part of the pyrotechnic checkers is associated with the output gap nozzle and is limited adjacent to the flanging of the bottom tank end face of the functional layer, which covers the gap between the bottom tank and checker.
FIELD: fire-prevention facilities.
SUBSTANCE: invention relates to the field of fire fighting, namely to devices that generate gas-aerosol fire retardants designed for extinguishing fires in closed or semi-enclosed volumes. The extinguishing aerosol generator comprises a cylindrical housing and body with a lid and bottom, a mixing chamber, and also an activator and the pyrotechnic charge. The housing and the body are coaxially mounted with each with an annular gap for induced air. The mixing chamber is formed by the side walls of the housing. The pyrotechnic charge is set inside the body with provision of the possibility of formation of an ejecting aerosol chamber. Inside the body there is a layer of material cooling the aerosol. The generator is made with the ability of aerosol release to the protected area. The cylindrical housing and the body are interconnected coaxially. The bumper is installed parallel to the bottom which is fixed providing partial overlapping of the lateral surface of the body and forming around the body of an annular nozzle for ejecting aerosol release. The layer of the aerosol cooler is placed in series with respect to the pyrotechnic charge to form additional free volume with the function of combustion chamber. The ejecting aerosol chamber is formed between the bottom of the body and the bumper. The bottom is made perforated.
EFFECT: optimal combination of performances of extinguishing efficiency, temperature of gas-aerosol spray and the intensity of supply of the extinguishing aerosol to protected area with a low degree of tightness.
12 cl, 3 dwg, 1 tbl
FIELD: medicine, fire-fighting means.
SUBSTANCE: invention refers to fire-fighting, namely extinguishing gas-aerosol mix generators actuated by pyrotechnic compound burning and spraying the mix into the protected space. A three-dimensional aerosol fire extinguishing apparatus comprises axially coupled cooling cylinder, and a generator body with a heat-insulating inner layer. The cylinder is provided with injection windows and mounted on a bearing arm with an angularly positioned longitudinal axis. The layer fixes a functional pyrotechnic stick connected with a central ignition cartridge represented in the form of a pyrotechnic tablet filled with a hermetic adhesive in an axial groove of the pyrotechnic stick. The ignition cartridge is wired with a hermetic switchboard of an external startup unit. The body is lidded with the lid comprising distributed outlets above a receiver wherein an isolating membrane is provided. The hermetic switchboard is mounted on the generator body by a threaded carrier sleeve with its flange attached in plaster of its heat-insulating layer which incorporates the wires to the central ignition cartridge.
EFFECT: invention provides enhanced technological capabilities of the use of the apparatus in the high atmospheric moisture and explosive environment.
1 cl, 2 dwg
FIELD: fire-fighting means.
SUBSTANCE: invention refers to fire extinguishing, namely to systems working on the principle of using suspended fine solid particles of an aerosol generated by combustion stick of a pyrotechnic composition as fire retardants. The generator comprises a pyrotechnic stick equipped with a flame igniter electrically connected with an external starting arrangement and fastened by a layer made of a curing material with a body overlapped with a diaphragm; the body through an annular gap forms a reverse pathway to an outlet annular nozzle and is coaxially fixed in a thermally shielded case provided with a central projection and an axially clamped plate-type cover. The case is filled with liquid oil covering the body wherein the pyrotechnic stick supplied with the flame igniter is arranged; a combustible diaphragm adjoins the body diagram; and over the body, distributed transverse disks alternating with in-built bulkheads is axially clamped; the central projection of the case has radial holes and adjoins a bottom of the cover.
EFFECT: invention provides enhanced functional reliability of the generator.
2 cl, 1 dwg
FIELD: fire safety.
SUBSTANCE: in a device for voluminous aerosol fire extinguishing, an initiation unit is realised as electric and thermochemical start-up initiators, installed on surface of an aerosol-forming substance (AFS) charge at the side of a receiver, outlet holes are located on a cylindrical metal casing near its metal cover and/or on it, and ratio of AFS charge burning area to the total area of outlet holes is 10-100.
EFFECT: improved quality of aerosol flow and convenience of use for various objects.
FIELD: fire fighting equipment.
SUBSTANCE: invention refers to fire prevention, more specifically to fire-extinguishing installations using gas-aerosol flame retardants generated by pyrotechnic block combustion and supplied to a protected space in an orderly way, preferentially by water crafts and transport vehicles. The generator contains coaxial case and pyrotechnical block fixed in flooring cement layers with an in-between annular reversible heat exchanger formed by two perforated metal envelopes with an internal one being matched with a receiver; and an ignition assembly adjoining a free end face of the block, and an outlet cover. The ignition assemble is integrated in a median slot from an open end face of the block which is enclosed in a polymer film casing and rests through a foam plastic spacer on a rod mounted in the diametrical perforations of an inferior envelope of the heat exchanger bearing longitudinal edges for the block diametre, while the case comprises a bearing bracket wherein ignition assembly telecommunication clamps are fixed.
EFFECT: ensured higher functional reliability and efficacy of the generator of more simple and technological design and expanded range of use thereof.
2 cl, 2 dwg
FIELD: fire-fighting means.
SUBSTANCE: invention relates to fire-fighting equipment, in particular to devices generating gas-aerosol mixture of inhibitors of burning, and is intended for volumetric extinguishing of fire in closed premises by hand throwing of the device into fire centre. Device contains case consisting of two plate-shaped reservoirs, counter-fixed, with their flanges forming ring outlet nozzle for generated gas-aerosol mixture during burning of pyrotechnical charges, installed in each case reservoir through layer of construction gypsum, and unit of ignition, located under radial handle. Unit of ignition is installed in threaded bush of mounting clamp, fixed coaxially to through hole in reservoir, blocked with foam-plastic stopper and adjacent to fire-conducting inclined canal of communication with clearance between free butt ends of pyrotechnical charges, installed aflush with reservoir flanges. Both charges are autonomously packed in polymer film jackets, nozzle being formed by matching convexes, made on supporting surface of flanges and layers of construction gypsum being reinforced with metal mesh.
EFFECT: increase of action efficiency and reliability.
3 cl, 2 dwg
FIELD: fire-fighting equipment.
SUBSTANCE: invention relates to firefighting equipment, namely to equipment for volumatric firefighting. In method for volumatric fire fighting, in industrial premises, consisting in the fact, that in premises installed are elements for firefighting with charge of smoke-forming composition, which are connected to each other with fire conductive fuses, made from material, which provides transmission of burning, elements are placed in volume of premises in such way, that their axes cross in geometrical center of premises, which is defined as point of intersection of rectangular parallelepiped or cube diagonals, fire conductive fuses connecting elements for firefighting with charge of smoke-forming composition, and forming closed quadrilateral with apexes, in which said elements are installed, each of said elements for firefighting is made in form of body with bead and outlet, equipment with charge of smoke-forming composition with unit of initiating, and outlet of body is closed with discontinuous membrane.
EFFECT: increase of reliability and efficiency of volumatric firefighting system.
3 cl, 6 dwg
FIELD: fire safety.
SUBSTANCE: proposed device generates gas-aerosol fire inhibitors formed in combustion of pyrotechnical composition and directs them in structure to be protected. It can be used in both independent and automated fire fighting systems. Generator comprises igniting unit and pyrotechnical grain fitted, via heatproof layer in perforated case coupled with receiver communicated with reversing annular channel closed by cover. It has also outlet holes and is separated from the case by heatproof layer. Said grain is packed in polymer film jacket and locked in the case by lengthwise plates and crosswise rod arranged in receiver perforations under grain free end face. Note that the case heatproof layer has two bolts fixed therein to support bracket with terminals of igniting unit electric communication. Note also that reflecting tray is arranged under said receiver.
EFFECT: higher mobility and reliability.
2 cl, 2 dwg
FIELD: medicine, fire fighting equipment.
SUBSTANCE: invention refers to devices generating gas-aerosol fire retardants produced after pyrotechnic compound combustion and arranged to be delivered in a protected capacity, and is used both in stand-alone, and in automatic fire-control units for inflammable and combustible substances, hard materials and energised electric equipment. The device comprises a perforated cupped metal case with a gap filled with a binding substance, an aerosol-forming compound charge and an initiation unit to form at the opened end of the cup a receiver connected via communication openings with a reverse ring channel formed between the perforated metal body and perforated metal shell ring placed with a gap filled with the binding substance, in a cylindrical metal casing closed by a metal cover, a chamber mounted under the cover, and discharge openings formed on the cylindrical metal casing near to the metal cover and/or thereon; it is equipped with a limiter fixed on the casing above the cover, and the casing is provided with a protective wirecloth in its upper part under the discharge openings of the casing and/or the cover; and the relation of the combustion surface area of the aerosol-forming compound charge to the total area of the discharge openings is within 10-30.
EFFECT: higher reliability of the device, and improved quality of an aerosol flow when eliminating the liquid fraction (K-phase) and usability of the device on various fire-fighting objects.
FIELD: fire safety.
SUBSTANCE: fire-extinguishing module comprises cylindrical tube closed at ends and filled with fire-extinguishing substance in liquid or gaseous condition under pressure, which is excessive versus environment. Mechanism of tube opening is arranged in the form of hollow body and yoke attached to one of its ends with clearance and with the possibility of pressing, on adjacent surfaces of body and yoke there are semi-cylindrical bores arranged as inverted towards each other and enclosing tube, and circular groove is arranged on surfaces of bores in middle part of body and yoke. Body is installed perpendicularly to longitudinal axis of tube, on free end of body there is cover fixed with central hole, in which initiation unit is mounted. On body bottom inverted to tube there is channel arranged, which communicates to circular groove, besides inside body there is solid fuel pyrotechnical blasting cartridge placed as made of aerosol-forming composition, including finely dispersed solid components, for instance soot, aluminium, ferric oxide. At least one blasting heat-sensitive cord is fixed on external side surface of tube.
EFFECT: improved performance and efficiency of module.
12 cl, 4 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
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 40-45×103 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 100°C.
EFFECT: higher performance speed and reliability of the extinguisher that provides effective fire protection of the process equipment.
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
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
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: fire-fighting equipment, particularly fire-extinguishers, for instance powder fire-extinguishers.
SUBSTANCE: fire-extinguisher comprises cylindrical body with head and bottom, shutoff-and-triggering device with spraying head and siphon pipe for powder distribution from cylindrical body into spraying head through shutoff-and-triggering device. Cylindrical body has mouth head including support flange secured inside cylindrical body and connected to mouth thereof by spot weld seam. The bush has cylindrical central pipe mating support flange thereof. Central pipe includes inner thread for shutoff-and-triggering device connection to cylindrical body. Sealing gasket made of elastic material is clamped between shutoff-and-triggering device and body mouth. Bottom is air-tightly secured to cylindrical body by means of welding.
EFFECT: increased body reliability, decreased labor inputs for fire-extinguisher body manufacturing and reduced body manufacturing accuracy requirement.
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