Dry powder self-actuating extinguisher
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.
The invention relates to mechanical engineering, in particular to a device for extinguishing means flashpoint.
The closest technical solution to the stated object is a fire extinguisher on A.S. USSR №593019, F16D 3/04, 1976 (prototype), comprising a housing in which the powder composition, is poured through the tube.
The disadvantages of the known solutions are relatively low reliability of operation and low performance.
The technical result - increase of efficiency of protection of the equipment against fires by increasing the speed and reliability of operation.
This is achieved by the fact that in powder self-actuating the fire extinguisher, comprising a housing in which the powder composition, is poured through the tube, the housing contains a glass bulb in a metal frame with a length of 500 mm and a diameter of 54 mm, filled with powder, and in the middle of the bulb is a layer of special solids passing into a gaseous state at a temperature of 100°C.
Figure 1 presents the scheme of the self-actuating powder fire extinguisher, figure 2 is the radius of its action.
Powder self-actuating extinguisher contains a glass flask (figure 1) in a metal frame with a length of 500 mm and a diameter of 54 mm, filled with powder. In the middle of the bulb find the camping interlayer special solids, rolling in the gaseous state at a temperature of 100°C. Generated at this temperature, the pressure breaks the flask, resulting in a pulse emission of the powder, which is scattered in the space volume 5...8 m3sleeping in the source of the fire (figure 2).
Powder self-actuating extinguisher works as follows.
In the middle of the bulb is a layer of special solids passing into a gaseous state at a temperature of 100°C. Generated at this temperature, the pressure breaks the flask, resulting in a pulse emission of the powder, which is scattered in the space volume 5...8 m3sleeping in the fire source. These fire extinguishers are effective in areas of low volume: in a closed electrical devices, small stores, living rooms, garages, etc.
During manual operation of fire extinguishers of this type flask break with one of the ends and fall asleep burning powder plot.
The choice of the type and the calculation of the required number of fire extinguishers depend on their fire-fighting capacity, the marginal area and class of fire according to ISO 3941-77.
Powder self-actuating a fire extinguisher, comprising a housing in which the powder composition, is poured through the tube, characterized in that it contains a glass bulb in a metal frame is Lina 500 mm and a diameter of 54 mm, filled with powder, and in the middle of the bulb is a layer of special solids passing into a gaseous state at a temperature of 100°C.
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 means.
SUBSTANCE: invention refers to portable fire-control units, particularly to fire extinguishers. The fire extinguisher comprises a extinguishing fluid tank, a fluid displacement system accommodating a including siphon tube, a locking starter coupled with an outlet of the siphon tube, a fluid flow limiter controlling a cross-sectional area of a flow passage by fluid pressure in the tank, a fluid sprayer with a centrifugal fluid vortex and an exhaust nozzle, and a pipeline connecting an outlet of the locking starter and the fluid sprayer; the exhaust nozzle of the fluid sprayer represents a cone diffuser chamber with its inlet coupled with an outlet of the cylindrical mixing chamber of the centrifugal vortex. An inlet connection comprises an axial fluid supply tube and a cylindrical compressed air supply cavity into the mixing chamber where air-mechanical foam is produced. Besides, the fire extinguisher is supplied with a small-sized compressor which is coupled by an air line to a connection cavity and supplies compressed air when the fire extinguisher actuated.
EFFECT: more effective various class fire extinguishing ensured by using high-expansion air-mechanical foam.
1 cl, 1 dwg
FIELD: fire fighting equipment.
SUBSTANCE: fire-fighting unit (50. 50', 50") comprising a double-enclosed (12, 12') fire suppressant container (10, 10'), a piston (20, 20') axially movable in the container enclosure and isolating in the fire suppressant container a fire suppressant space (22, 22') from an extensive space (24, 24'). According to the invention, inside the fire suppressant container (10, 10') there is a pressure tank (28, 28') in the form of a compressed gas chamber (26, 26') spatially separated from the extensive space and used for high-pressure storage of propellant and for controlled supply thereof to the extensive space (24, 24') at low extinction pressure. The piston (20, 20') is movable along the compressed gas chamber (26, 26').
EFFECT: higher performance of the fire-fighting unit.
1 cl, 15 dwg
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 small fire-fighting devices and can be applied for extinguishing fires of solid and liquid substances, electric plants under voltage to 1000 W, automobiles, tele- and radio equipment in initial stage of fire beginning, in premises and open areas. Fire-fighting device of pulse action, equipped with fire-extinguishing powder and expelling charge, consists of placed one after another ignition and expelling compositions in given proportions of their components and weight ratios, equipped with powder sparger, brought into action from capsule of lighter "Zhevelo" by means of percussion-lock.
EFFECT: increase of fire-extinguishing action by increasing its work stability and improvement of exploitation properties.
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-fighting, particularly for extinguishing fires on transport and in rooms.
SUBSTANCE: plant comprises module with fire-extinguishing powder having partition installed along module body height. Partition serves as deflector and has concave shape. Orifices are formed along partition periphery. Plant has siphon tube with cuts oppositely formed at end thereof. Thermal jacket is connected to body portion. Container with gas-generation composition and heating member enclosed by insulation cup is arranged in body bottom.
EFFECT: possibility of extinguishing fire with the use of increased reliability and performance.
9 cl, 4 dwg
FIELD: fire fighting, particularly means for generating aerosol fire inhibitors by burning pyrotechnic composition of cartridge and for delivering thereof into space to be protected in organized manner.
SUBSTANCE: aerosol generator comprises cartridge triggering unit secured into coaxial metal body through gypsum cement layer. Metal body has communication orifices to establish communication with reverse annular channel of receiver aligned with the body and covered with end cup having outlet orifices. The components are arranged inside perforated heat-exchanger case connected with outer shell through heat-shielding gypsum cement layer. The shell is tubular. Heat-exchanger case has end covers attached to case ends and having outlet orifices. End covers are fixedly secured to metal body and arranged symmetrically relative receiver located between pyrotechnical cartridges. One cartridge is provided with independent triggering unit. The case has corrugations to secure thereof in gypsum cement of heat-shielding layer.
EFFECT: increased operational reliability due to generating ignition impulse by two independent triggering units, increased intensity of cartridge burning simultaneously from both ends when fire-extinguishing composition is fed in opposite directions, reduced size, increased load-bearing strength and, as a result, possibility to increase pressure of fire-extinguishing flow to generate high-velocity flow.
FIELD: fire fighting, particularly means for generating aerosol fire inhibitors for extinguishing fires into closed space.
SUBSTANCE: fire-extinguishing plant comprises two pyrotechnical charges for gas-aerosol mixture generation. Pyrotechnical charges are provided with protective shells and arranged in vessels connected in back-to-back manner and spaced one from another. One vessel is of plate-like shape and charges are connected to the vessel by gypsum cement layer filling space defined by vessel flanging. Ignition block is installed between the charges. Another vessel is cylindrical and mates to plate-like vessel flanging diameter. Ratio between charge masses is 3:7. The plant may perform automatic operation in two modes, namely in intensive gas-aerosol generation mode with simultaneous pyrotechnical cartridge charge end burning in both vessels to provide a certain aerosol inhibitor concentration in the space, and in slow gas-aerosol generation mode in which pyrotechnical cartridge charge burns only in cylindrical vessel to increase aerosol inhibitor concentration up to predetermined value.
EFFECT: possibility of automatic operation in two modes.
FIELD: fire-fighting equipment and liquid sprayers for various applications.
SUBSTANCE: liquid sprayer has body with inlet connection pipe, centrifugal liquid flow swirler and nozzle with profiled channel. Centrifugal swirler is made as hollow cylindrical insert with inlet axial channel and at least four tangential inlet channels formed in side wall of the insert. Transversal sections of inlet centrifugal swirler channels are dimensioned such that 4S0≤St≤6S0, where St is summary area of tangential channel sections, S0 - is area of axial channel section. Four tangential channels may be formed in side wall of hollow insert. The tangential channels may be equidistantly spaced along a circle. Axes of symmetry defined in adjacent channels are transversal one to another. Cylindrical insert cavity communicates with inlet orifice of profiled nozzle channel including part tapering in liquid flow direction. Profiled outlet nozzle channel may comprise inlet part converging in liquid flow direction and diverging outlet part. The inlet and outlet parts are arranged one after another. Parts of profiled nozzle channel have conical or conoidal shape. Fire-extinguisher comprises tank with fire-extinguishing liquid, system for liquid displacement from the tank, shutoff-and-triggering device, liquid sprayer provided with centrifugal liquid flow swirler and outlet nozzle. Fire-extinguisher also has pipeline to connect shutoff-and-triggering device with liquid sprayer. The liquid sprayer generates gas-and-liquid jet with spray angle of 17-23°.
EFFECT: increased velocity and uniform liquid droplet dimensions in the jet, possibility to create gas-and-liquid jet with fixed spray angle.
10 cl, 4 dwg
FIELD: fire-fighting equipment, particularly rechargeable portable fire-extinguishers in which fire-extinguishing substance is stored under pressure created by propellant gas.
SUBSTANCE: fire-extinguisher comprises siphon pipe, shutoff-and-triggering device connected to siphon pipe outlet and flow restrictor. Liquid sprayer comprises centrifugal liquid flow swirler and outlet nozzle. Liquid sprayer is connected to shutoff-and-triggering device outlet through pipeline. Outlet liquid sprayer nozzle is formed with profiled channel. Profiled channel inlet is attached to liquid flow swirler outlet. Profiled channel converges in flow direction. Nozzle channel may be formed by inlet converging section and outlet diverging section arranged in series. Profiled channels may define cone or conoid in cross-sections. Centrifugal liquid flow swirler is made as cylindrical insert with axial and tangential channels. Liquid flow restrictor is installed in front of shutoff-and-triggering device inlet to regulate channel area S in dependence on vessel pressure. Area S may be selected from the following condition: 0.5Sc≤S≤2.5Sc, where Sc is minimal area of profiled outlet nozzle channel. Liquid flow restrictor may be formed as valve having movable part having channels in side wall thereof and immovable part coaxial to movable one.
EFFECT: possibility to generate gas-and-droplet flow having constant spray angle and flow rate, possibility to obtain necessary distance of liquid throw for the full fire-extinguisher charge distribution process.
7 cl, 4 dwg
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
FIELD: fire-fighting equipment, particularly hand-held fire extinguishers charged with foam fire-extinguishant.
SUBSTANCE: fire-extinguisher comprises cylinder having neck closed with closure and handle connected to rod. Rod is linked to shutoff means made as two semi-spheres and arranged in body. The body is provided with orifices and is located below level of cylinder filling with alkaline solution. Cup with acid fire-extinguisher charge component is located in lower body part. Diaphragm is arranged in cup base. Ready foam passes from cylinder through spraying means.
EFFECT: improved fire-extinguishing capacity due extended range of technical capabilities and increased service life.
SUBSTANCE: gas generator comprises housing provided with means for gas discharging made of openings on the side of the housing and gas generating and igniting charges mounted inside the housing and made of pyrotechnical compositions. The initiating member is mounted on one of the faces, and filter is mounted on the side and faces of the gas-generating charge. The surface of the gas-generating charge is armored from the side of the gas outlet. The auxiliary charge is mounted axially symmetrical in the gas-generating charge and is provided with layers that pass from the axially symmetrical layer to the periphery and connected with them.
EFFECT: enhanced reliability and expanded functional capability.
4 cl, 1 dwg
FIELD: chemical industry; the portable devices for the fire extinguishing.
SUBSTANCE: the invention is pertaining to the field of the fire-fighting equipment, in particular, to the portable fire extinguishers (manual, pistol, pack) and may be used for fire extinction by feeding of the fire-extinguishing agent (fluid, powder) to the center of inflammation. The stated technical solution allows to improve the operational capabilities and its usage convenience due to expansion of the range of the used fire-extinguishing matters, minimization of time used for replacement of the pressure forming means, provision of the possibility to correct the volume of the gas-generating composition according to the existing need at the simultaneous increase of effectiveness of operation due to the maximum utilization of the internal volume of the container and elimination of the unproductive feeding of the gas. The represented portable fire extinguisher has the container for the fire-extinguishing matter and the gas-generating tool for creation of the operational pressure. The portable fire-extinguisher singularity consists, that it is supplied with the a control unit, the pressure sensor located in the container, at that the gas-generating tool is made in the form of at least two gas generators arranged in the airproof cassette mounted outside the container and linked with it by means of the high-speed coupling, and the control unit interacts with each gas generator with provision of their consecutive actuation.
EFFECT: the invention ensures the increased effectiveness of operation, the improved operational capabilities, convenience of usage, expansion of the used fire-extinguishing matters, minimization of the time for replacement of the pressure forming means, the possibility to correct the volume of the gas-generating composition.
3 cl, 1 dwg
FIELD: spraying devices adapted for degassing, deactivation and disinfection of military and civil machinery, for animal and plant treatment and fire-extinguishant spraying during fire suppression.
SUBSTANCE: spraying device comprises body, neck, high-pressure cylinder, locking-and-triggering head and filling-and-draining pipe. Air-tight casing is installed in through stepped orifice made in inner side of locking-and-triggering head. The casing is made as sleeve to receive high pressure cylinder arranged in chamber thereof. The high pressure cylinder has tearable diaphragm. Gas channel is defined between the sealed casing and high pressure cylinder. Gas channel throat is 0.1-0.12 of sleeve cross-sectional area. Sleeve mouth is provided with collar having outer thread. Check valve is installed in sleeve bottom. Sleeve bottom may adjust high pressure cylinder in axial direction. Punching mechanism is installed in through stepped orifice and is located from outer side of locking-and-triggering head. Maximal distance between outer surfaces of filling-and-draining pipe and casing is not more than 0.9 of inner neck diameter.
EFFECT: increased operational reliability, enlarged storage period, possibility of device filling with aggressive, erosive compositions and solutions.
2 cl, 2 dwg