Fire-extinguishing aerosol generator
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
The invention relates to fire fighting equipment, and more particularly to a device for extinguishing fires generated by the combustion of a pyrotechnic composition checkers gas-aerosol retardants, organized guided in the protected volume, mainly on ships and vehicles.
The level of this technology describes a device for volumetric aerosol extinguishing the patent RU 2164808, A62C 13/22, 2001, which contains the site of initiation (ignition) pyrotechnic checkers set with a gap in the metal casing, provided with communication holes messages with reversing the annular channel of the casing, the closed lid of the output holes, the heat exchanger and the receiver.
Heat exchanger in the form of external relative to the body of the perforated shell, reinforced coaxial piece in the casing through a layer of gypsum, which also fills the gap between the block and a case combined with a receiver.
Communication holes are made on the side of the receiver.
The device is characterized by high performance generation inhibitors of combustion and high efficiency cooling products extinguishing mixture inside the device, therefore, is intended for use manually.
Fault is m described device is the ballast weight of the plaster due to the relatively long receiver.
In addition, the fire-extinguishing aerosol generator vzravobezopasna when used in areas with technological solids and volatile substances, which penetrate inside where. When triggered, the node ignition for this reason, there is an explosion and the destruction of the device, do not perform functions for the protection against fire, but, moreover, which is an additional source of fire with shrapnel lesions.
More perfect is the fire-extinguishing aerosol generator according to the patent RU 2237502, A62C 3/10, 2004, which is the technical essence and the number of matching characteristics is selected as the closest analogue suggested.
Known generator contains a coaxially mounted in the housing and fixed in the interlayer building plaster pyrotechnic piece, between which is mounted an annular reversing heat exchanger formed by two perforated metal shells, the inner one of which is combined with a receiver equipped with a shielding disc guide for reversing gaseous combustion products and the protection of DNA from their direct action.
Between the cover and the casing is fixed a bearing aperture in which is suspended from the inner shell of the heat exchanger with a functional piece.
The outlet cover is displaced relative to the tion is blocked by a membrane window aperture, that ensures the integrity and protection of the generator. The window in the aperture additionally share a common gas-aerosol stream on Autonomous jets, which are more actively mixed and cooled under cover.
The gap between the outer shell of the heat exchanger and the casing filled for insulation, building plaster, which bearing element structure.
This generator is characterized by compactness and structural rigidity.
However, it should be noted inherent in the known generator the following disadvantages.
The complexity of the design due to special means of isolating the internal volume of the generator from penetration to pyrotechnic piece and node ignition of atmospheric moisture for use in marine and river vessels.
Limit the use of the generator in terms of vibration and transportation shaking due to insufficient adhesive bond pyrotechnic checkers in heat-insulating layer of the shell of the receiver to eliminate the offset is not mechanically fixed checkers into the receiver.
While not structurally resolved generator installation in a protected area, which requires additional configuration of the fastener, increasing consumer cost technological works for the fire protection of different areas.
Technical the second task, on the solution of which the present invention is directed, is to increase the functional reliability of the universal fire-extinguishing aerosol generator more simple design.
The required technical result is achieved by the fact that in the known fire-extinguishing aerosol generator containing a coaxially mounted and secured in heat-strips of gypsum building and pyrotechnic piece, between which is mounted an annular reversing heat exchanger formed by two perforated metal shells, with the inner of them combined with a receiver node ignition, adjacent to the free end pieces, and cover with the outlets, according to the invention, the node ignition mounted in the Central groove of the open-end pieces, which are placed in the polymeric film pouch and leans through the foam gasket on the rod, mounted in diametrically the perforations of the inner shell heat exchanger, bearing longitudinal ribs diameter checkers, and fixed on the housing bearing bracket, where the terminals of the telecommunication node of ignition, and the bracket is mounted on two diametrically spaced bolts mounted in heat-shielding layer of the hull.
Distinctive features increased functionality is Noah reliability and efficiency of operation is more simple and technological design in the expansion of its use.
The installation site of inflammation in the Central groove of the free end of the pyrotechnic pieces has created a constructive unity functional and originating elements, in which the device is used as a monolith in conjunction with the other structural elements of the generator, in particular with the supporting rod and the receiver.
Electrical connection of the node ignition terminals mounted on the support bracket, which is attached to the generator housing, provided its autonomy when installed in the protected volume for the functioning of the pulses from the General system fire alarm when exceeding temperature or smoke.
Placing pyrotechnic checkers on the supporting rod mounted in diametrically the perforations of the inner shell of the heat exchanger, rigidly secures its spatial position relative to the receiver, thereby ensuring the functionality of the generator and set the initial gas-dynamic parameters of the fire-extinguishing aerosol.
When this foam gasket between the block and the supporting cross rod serves as a damper enclosure clearances and Assembly clearances, and protects from mechanical damage adjacent frameless node ignition that allows you to use the generator in terms of vibrations and transport on Rusak, expanding the scope.
The interior shell of the heat exchanger longitudinal ribs, drenched with a solution of gypsum increases structural strength of the functional site and the generator in General, since the ribs function as reinforcement in the heat-shielding layer, preventing it from turning.
In addition, the radial size of the longitudinal edges selected for the diameter of the pyrotechnic pieces, which simplifies its installation and centering in the seat, based along the edges, thus forming the annular gap under the fill solution building plaster.
The installation site of inflammation within the Central groove of the free end of the pyrotechnic checkers is a compact functional connection and initiating elements as a monolithic Assembly unit of the device. It certainly improves the reliability of the instantaneous initiation of the checkers from direct contact with the site of inflammation, without losing its thermal energy of the pulse.
Placing pyrotechnic pieces, together with a host of ignition inside the polymeric film pouch ensures their integrity, trustworthy isolating from atmospheric moisture, which can simplify the design by eliminating the special funds of the prototype.
Equipping the receiver about rausim tray provides a turn the main volume of the extinguishing mixture in the annular reverse channel at the output of the generator, with the accompanying thermodynamic its cooling.
Install mounting bolts (for mounting bracket bracket) from the enclosure in the manufacture of its heat-shielding layer is structurally simple and manufacturable device ensuring the rigidity of the generator to the various bearing surfaces in the protected volume.
Therefore, every significant topic are needed, and their combination in a sustainable unity is sufficient to achieve novelty quality, extrinsic signs of dissociation, that is, the problem is solved not by the amount of effects and new shoreface amount of signs.
The invention is illustrated by drawings, which are purely illustrative purpose and do not limit the scope of the claims of the formula. In the drawings shows:
figure 1 - General view of the generator, a longitudinal section;
figure 2 is a view along arrow a in figure 1.
In the Central groove 1 pyrotechnic checkers 2 mounted node 3 ignition, which is a resistor (electrical resistance)placed inside the igniter composition, sensitive to thermal pulse (conventionally not shown). Node 3 ignition to the 2 piece in the groove 1 is glued by epoxy resin or silicone sealant 4.
Piece 2 together with the node 3 ignition placed the inside polyethylene film (0.3 mm) two-layer cover 5 and through the heat-shielding layer 6 of gypsum enshrined in perforated metal shell 7, which is combined with a receiver 8 (free volume of the cylindrical shell 7 piece 2).
Piece 2 is based through the foam gasket 9 on the rod 10 mounted in diametrically the perforations of the shell 7, under the free end pieces 2.
The receiver 8 is mounted on the disc tray 11, equipped with a heat-insulating layer 12 of the building plaster.
The foam gasket 9, campfire clearances and gaps, seals mechanical coupling pieces 2 with the supporting rod 10 and hermetically isolates the node 3 ignition in the groove 1 checkers 2.
Coaxial sheath 7 and the receiver 8 through reversible annular channel 13, is mounted perforated shell 14, forming together with the shell 7 functional heat exchanger.
Outside of the perforated shell 14 is mounted heat-shielding layer 15 of gypsum.
Reverse channel 13 serves to supply the generated aerosol from the receiver 8 to the output of the generator, while the deceleration of the flow, changing the direction of motion, thermodynamic temperature reduction.
The heat exchanger is formed of perforated shells 7 and 14, is designed for selection of thermal energy from the exit stream of heated extinguishing mixture and evaporation through their punching water, structurally related to the gypsum layers 6 and 15, respectively, in the annular reversing the channel 13.
Inside the shell 7 is fixed longitudinal strips 16, the thickness of which is selected under the diameter of the pyrotechnic pieces 2, which is built on them in the Assembly before pouring the solution of gypsum formed in this annular gap under layer 6.
With a gap formed layer 15, the shell 14 is the outer body 17 of the generator.
The inside of the housing 17 (figure 2) has two diametrically mounting bolt 18 for mounting of the bracket 19 to install the generator on load-bearing surfaces in the protected volume.
On the bracket 19 posted by terminal 20 of the power supply, which is connected to the node 3 in the Appendix. The terminals 20 are connected with sensors wiring security fire alarm system.
On the housing 17 is fixed cover 21, overlying the reversible annular channel 13, coaxially in which the cover 21 is made distributed outlet openings 22.
Operates the generator as follows.
An electric pulse from the sensor burglar fire alarm system heated resistor node 3, initiating its igniter composition which ignites when this pyrotechnic composition checkers 2 at its free end.
When burning pyrotechnic composition checkers 2 is formed aerosol fire retardants in the form of gaseous compounds and ultra-condensed particles is developed power surface - extinguishing mixture.
Extinguishing mixture accumulates in the receiver 8, mixed, and Autonomous jets expires in the reverse channel of the heat exchanger 7-14. Main volume extinguishing mixture, Bouncing off of the pallet 11 of the receiver 8, provides evaporation of water from the layer 12 of gypsum, which dilutes the aerosol, further cooling it.
Hot products of combustion checkers 2 when driving on reverse channel 13 is heated shell 7 and 14 of the heat exchanger, resulting in convective heat evaporated the water associated with potassium sulfate gypsum layers 6 and 15, respectively, which distributed transverse jets enters the channel 13, where it is actively mixed with the generated aerosol.
Gas-aerosol flow is decelerated in the free volume under the cover 21, further cooled at the same time, and Autonomous jets through the outlet 22 is served in a protected area, where the injection of ambient air and a sudden cooling extinguishing mixtures under dynamic turbulent mixing.
With the introduction of extinguishing mixture into the zone of fire breaks and the chain mechanism of formation of active radicals due to their recombination, and also by holding them on the surface of the aerosol, each particle of which performs the role of the capacitor energy released by the reaction of recombination of the asset is s radicals, that provides suppression fire upon reaching the desired concentration of the inhibitors of burning.
High mechanical strength of the proposed design of the generator, the mass functional checkers which is held by the supporting rod and campfires foam liner, can be used in conditions of cyclic vibrations and transportation shaking, and the tight packing pieces together with a host of ignition in the polymeric film pouch - in conditions of high humidity, there is provided an operational versatility.
Bench and field tests of prototypes of the proposed generator showed high efficiency and speed of fire, which makes it practical competitiveness.
According to the invention developed detailed technical documentation for serial production line of generators of this design.
The comparative analysis of proposed technical solutions to identified analogues of the level of the art from which the invention not obvious to a person skilled in fire-fighting techniques, showed that it is not known, and given opportunities for industrial mass production of fire-extinguishing aerosol generators in current production can do AVOD in accordance with the criteria of patentability.
1. The fire-extinguishing aerosol generator containing a coaxially mounted and secured in heat-strips of gypsum building and pyrotechnic piece, between which is mounted an annular reversing heat exchanger formed by two perforated metal shells, with the inner of them combined with a receiver node ignition, adjacent to the free end pieces, and cover with the output apertures, characterized in that the node ignition mounted in the Central groove of the open-end pieces, which are placed in the polymeric film pouch and leans through the foam gasket on the rod, mounted in diametrically the perforations of the inner shell of the heat exchanger, the carrier longitudinal ribs diameter checkers and fixed on the housing bearing bracket, where terminals telecommunication with a node in the ignition.
2. The generator according to claim 1, characterized in that the bracket is mounted on two diametrically spaced bolts mounted in heat-layer casing.
SUBSTANCE: proposed method consists in helicopter flights between beach and sea drilling platform. Intermediate heliport is arranged on stabilised sea platform between drilling platform and beach with two or more air strips and alert rescue helicopters. Heliport take-off and landing decks are arranged at superstructure of said stabilised sea platform. Platform top structure is divided by cofferdams with head airlocks into local zones to prevent fire and smoke propagation over the entire structure.
EFFECT: regular helicopter service, higher fire safety.
2 cl, 1 dwg
FIELD: fire-fighting equipment, particularly to suppress fire in relatively high rooms, for instance in ship compartments.
SUBSTANCE: method involves supplying fire-extinguishing medium and gas in room via the first nozzle so that fire-extinguishing medium and gas are non-uniformly distributed over room space and create high fog. The first nozzle is installed in upper room part to provide fire-extinguishing fog circulation. Fire-extinguishing device is also disclosed.
EFFECT: increased efficiency.
20 cl, 3 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: 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: 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
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
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: 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, 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