Method of explosion discharge for aerosol fire extinguishing device

FIELD: fire safety.

SUBSTANCE: present invention relates to technology of gas fire extinguishing. Method of explosion for aerosol fire extinguishing including the following stages: 1) when an aerosol fire extinguishing device explodes the corresponding explosive device creates a limited movement along direction of hot air flow from aerosol fire extinguishing device; 2) when the end part of explosive device reaches the edge of aerosol fire extinguishing device, the explosive device being limited stops motion along the direction of hot air flow which enables to achieve for aerosol fire extinguishing device of explosion target and reduce recoil force.

EFFECT: this method enables smooth release of powerful explosion, thus preventing damage to operator due to powerful recoil force at the same time preventing flyout of cylinder with great speed and preventing accidents leading to injuries and damage.

8 cl, 3 dwg

 



 

Same patents:

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-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.

3 dwg

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

Aerosol generator // 2256474

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.

2 dwg

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.

1 dwg

Gas generator // 2286844

FIELD: mixing.

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: mechanics.

SUBSTANCE: generator can be applied for large scale fire extinguishing in closed or semi closed spaces. To increase an operating speed the generator is designed with case having a cylinder coating, the said case is with a front bottom and a perforated nozzle cover, generator is also equipped with charge of aerosol forming composition, situated between the front end and a ring support, cooling unit, assembled on the support ring, pipe, fastened inside the case along its axis, inducor, installed inside the pipe and trigger. Hollow bushing is installed between and rigidly attached to the ring support and the support ring, the side surface of the bushing has windows for burning products outlet. Charge is made of multi blocks and consists of at least three cylinder blocks which are installed lengthwise a circle between the inside surface of the case coat and outside surface of the pipe. The ring support is fastened on the end of the pipe facing the cooling unit, at that the opposite end of the pipe is fastened onto the front bottom of the case, and the side surface of the pipe is perforated.

EFFECT: simplification of the design of aerosol forming solid fuel charge, increase of reliability of its performance.

6 cl, 3 dwg

Aerosol generator // 2346718

FIELD: mechanics; fire-fighting equipment.

SUBSTANCE: invention relates to hardware with the principle of operation consisting in using suspended highly-dispersed solid particles, aerosols, as flame retardants, the aerosol being formed in burning of pyrotechnical grains and released in a protected chamber. Aerosol generator comprises the primer of grains distributed in a cylindrical heat-protected housing combined with the receiver communicating, via a pipeline, with the reverse circular channel formed by a heat exchanger, a casing and a tapered cover. The said casing and tapered cover are arranged reversed and partially overlapping to form an annular outlet nozzle, both being furnished with a heat-protection material interlayer. Note that the said cover rests upon the housing mounted on the central ledge of the casing. The said housing and casing are jointed together with the help of an axial rigging screw, the casing being arranged on a mounting plate with a heat-protection coating acting as a deflector. Note also that the pyrotechnical grains and receiver pipelines are fixed in the housing with the help of gypsum plaster.

EFFECT: simpler design, ease of manufacture, higher efficiency.

2 cl, 2 dwg

FIELD: fire safety.

SUBSTANCE: device for fire extinguishing contains generator for pyrotechnic unit burning, coupled with the means of distribution of the generated gas in the zone of fire. The device also includes means for regulating of the generated pressure to create a specific profile of oxygen concentration in the zone of fire. These controlling means can be executed, for example in the form of a controlled valve, or represent a special form of the pyrotechnic generator performance. The device is made with the possibility of fire extinguishing in aircraft engines, as it does not include halogen-extinguishing agent.

EFFECT: invention allows to control precisely the duration and level of fire protection zones.

24 cl, 6 dwg, 1 ex

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: 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.

3 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

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