Fire extinguishing aerosol generator

FIELD: mechanics.

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

EFFECT: increase of efficiency of large scale fire fighting.

3 cl, 2 dwg

 

The invention relates to fire fighting equipment, and more particularly to devices fire surround, generating aerosol flame retardants, and can be used for extinguishing fires in enclosed or semi-enclosed spaces, mainly production and storage areas, engine and cargo compartments of vehicles, electric power facilities.

Known fire-extinguishing aerosol generator, comprising a housing with a combustion chamber, a solid propellant aerosoltherapy charge and solar heaters, while the body is made in the form of two cylinders of different diameter, one end of each cylinder is open and the other provided with a bottom, a cylinder coaxially mounted one within the other so that the inner cylinder open end facing the bottom of the outer cylinder and between the side walls of the cylinders formed by the annular gap, and solid aerosoltherapy charge is installed in the inner cylinder near its bottom by a perforated support with stands, and solar heaters placed in the annular gap between the side walls of the cylinders, see U.S. Pat. EN, CL AS 37/00, No. 2091104 published 1997.09.27. In the specified well-known generator not solved the problem of thermal protection of the bottom of the outer cylinder, which has a direct impact force from the burning channel charge is.

Known flameless generator fire extinguishing aerosol containing a cylindrical housing with outlet holes, an igniter charge of aerosolforschung composition, the cooling element and the labyrinth cooling unit in the building has a metal Cup, which is formed with a cylindrical body portion labyrinth gap inside the jar are the charge and the cooling element, divided by the combustion chamber of combustion products, see U.S. Pat. EN, CL AS 13/22, No. 2208463 published 2003.07.20. The igniter is located directly in the channel charge, which under certain conditions can cause the destruction of the charge at the time of actuation of the igniter and abnormal functioning of the generator as a whole.

Known fire-extinguishing aerosol generator containing placed axially in the housing through a layer of gypsum pyrotechnic checker, block cooling of the granules ablative material, communicating with a combustion chamber Central opperational tube which is fixed an igniter associated with the remote control device, a convex cover with distributed output radial holes formed in the housing above the cooling unit perforated receiver, characterized in that the receiver above the perforations covered aluminum m is Brunoy, above the igniter, and geometrically closed on the body contour cover, outlet openings which are closed by a band of aluminum foil, while the igniter is connected with the remote control device via a closed switch, see U.S. Pat. EN, CL AS 3/02, No. 2205671 published 2003.06.10. The generator has a high functional reliability and advanced technological capabilities when operating in conditions of high atmospheric humidity. In the Central generator opperational tube fixed inside the igniter to a certain extent likened to the weapon barrel, which is a frontal shooting "at point blank range" pyrotechnic piece. This scheme fire exposure provides reliable ignition checkers, but does not guarantee its integrity.

Known fire-extinguishing aerosol generator for total flooding systems, comprising a housing, a solid aerosoltherapy element in the form of two charges, the initiator and a heat absorbing element, placed in Polycarpus with a perforated bottom and fixed therein a perforated partition, the charges made in the form of a cylindrical single-channel pieces of the same composition, at the bottom of the deaf Polycarpus opposite channel melanogenesis charge applied-coating, heat-absorbing ale is NT made in the form of pellets, covered in semi-body, while the volume of Polycarpus in length divided into at least two sections of metal mesh, see U.S. Pat. EN, CL AS 13/22, No. 2078599 published 1997.05.10. Due to equipment generator additional charge, it provides a reliable and effective firefighting when the leakage of the protected volume or pressure loss in the process of extinction. This known design decision was made as a prototype, as the closest to the technical essence and the achieved result is similar.

The disadvantage of the prototype is a free location of the initiator in the form of electric blasting, which reduces the reliability of its operation and ignition of the charge. At the time of actuation of the initiator of it, not having time to fully burn, moves due to the lack of mounting and under the influence of the total flow of gases in the most remote from the charge area of the generator. The result of this process of ignition may be forced to increase the mass of the initiator. In addition, as already noted, the initiator is located directly in the channel charge, poses a threat to its integrity in the moment of ignition. Another important disadvantage of the prototype is the presence in its structure of various charges, each of which performs a specific function. At the destruction of any, and the charges at the time of ignition or in the process of combustion increases the likelihood of abnormal operation of the generator as a whole. These drawbacks of the prototype worsen its consumer properties and cannot be used for the purposes of the present invention.

The present invention is directed to the achievement of the technical result, which is expressed in increased reliability of ignition and operation of a solid propellant charge aerosolforschung composition by reducing the mass of the initiator and the means of its launch. In the generator to preserve all the positive properties of the prototype, the most important of which are the same type of solid fuel for the manufacture of charges and the possibility of remote control initialization process.

Ultimately, this technical result improves the reliability of operation of the generator fire extinguishing aerosol as a whole and ensures the achievement of high performance fire fighting.

Indicated a positive result is achieved by the fact that the fire-extinguishing aerosol generator, comprising a housing with a cylindrical shell, a solid bottom and a perforated bottom, a charge aerosolforschung composition placed between a solid bottom and fixed to the body support ring, the cooling unit is fixed on the one hand a perforated bottom, and side charge a perforated partition, and the initiator with the launcher, ex which differs from the prototype in that that it has a cylindrical sleeve with a perforated side surface located on the inner surface of the bottom axis of the housing. While the charge is made mnogotochechnymi, consisting of one Central and at least two peripheral cylindrical pieces, and the Central cylindrical piece is located on the axis of the housing with the opportunity to support one end of the cylindrical sleeve and the other on the perforated partition. Peripheral cylindrical pieces are longitudinally axial offset relative to the Central circumference between the Central piece and the cylindrical shell of the housing. The initiator with the launcher is mounted within a cylindrical sleeve.

Optimal from the point of view of achievement of the specified benefits is the generator, provided with at least one separator for education guaranteed clearance between the side surfaces of the peripheral cylindrical pieces, which has in cross section of the beam structure and is installed on the Central cylindrical piece. Fundamentally it is possible to equip generator two or more of the same type separators.

All performances generator preferably execute on its front bottom screw holes for mounting the launcher initiator and filling in the morning cavity of the cylindrical sleeve between the solid bottom and the initiator of the heat-resistant sealant.

In the generator as a fire-extinguishing aerosol use the products of combustion of charges from specially arranged ImageReady of macromolecular compounds of the type ballistic, pyrotechnic or mixed powders. Such charges, with certain physico-mechanical characteristics, require the provision of special conditions of transportation, storage, ignition and functioning to prevent their destruction, especially in intensive alternating loads and large temperature fluctuations. Since the probability of failure of the battery cannot be ruled out, it is expedient to provide for the reduction of adverse effects associated with this phenomenon. Most likely from the point of view of destruction charge is the moment of ignition, when acting on the load gain maximum value.

The presence of a cylindrical sleeve, a perforated side surface located on the inner surface of the bottom allows you to place the ignition system, consisting of the initiator and the launcher, which minimizes their impact on the charge. In addition, the igniter gases, making the difficult path before it comes into contact with the surface checkers, lose much of their kinetic e is ergie. The tangential nature of such contact in conjunction with the unidirectional movement of the igniter gases and products of combustion of the charge to create the optimal conditions of ignition and prevent erosive burning. The Central cylindrical piece in the process of transportation and storage is exposed to the highest loads. Applied scheme can significantly relieve the Central piece at the moment of ignition due to the axial displacement and the conclusion thus from the danger zone.

Running charge mnogotochechnymi, with one Central and more peripheral checkers, allows to increase the reliability of the generator. When the destruction of one of the pieces mnogochastichnogo charge deviation vnutripoliticheskoi characteristics from the calculation is not as significant as in the destruction of the only checkers. In addition, mnogotochechnaya design allows, without complicating the shape of the supplementary charge comprehensive burning, to realize a high speed generator (up to several milliseconds) when using melanogenesis solid fuels. The best is to design with one Central and six peripheral of the same type checkers, which corresponds to the maximum packing density of the charge, but possibly a different number of peripheral checkers, depending on construction the th design of the generator. The number of peripheral checkers may not be less than two, because otherwise significantly complicated by the problem of ignition of the charge in the selected schema.

All the main elements of the generator is securely mounted in the housing and dissociated from each other, which eliminates the possibility of unwanted contact, friction, destruction, or inadvertent operation during operation, especially if the generator is mounted on a movable object, such as Matousec vehicle, vessel or aircraft. The launcher is securely fastened in the threaded hole solid bottom, fixed heat-resistant sealant and together with the initiator is separated from the charge of a cylindrical sleeve. Checkers charge fixed on the ends, and, moreover, separated from each other by one or more separators, radiation structure which repeats the shape of the peripheral checkers and sets the size of the gap between them.

The technical solution is illustrated by the drawings.

Figure 1 shows a General view of the fire-extinguishing aerosol generator; figure 2 - cross section a-a generator.

The body of the fire-extinguishing aerosol generator consists of a cylindrical shell 1, a solid (front) bottom 2 and the perforated bottom 3. The case contains mnogochastichnyi charge aerosolforschung composition consisting of one center is through a cylindrical pieces 4 and several peripheral cylindrical checkers 5. In Fig. pictured semishady charge with six peripheral cylindrical checkers 5, the corresponding rational scheme for high density packaging. Pieces 4 and 5 have the same geometrical dimensions, are made from the same composition in mixed technology and processed by the methods of free casting or injection molding. The building also housed the cooling unit 6 and the initiator 7 with launcher 8. On the axis of the housing, on the inner surface of the bottom 2 by means of threaded section mounted cylindrical sleeve 9 with perforated through-hole 10 of the side surface. On the inner surface of the solid bottom 2 and the end surface of the cylindrical sleeve 9 is coated with the layer of heat-shielding coating 11, which prevents overheating of the external surface of the bottom 2. Heat-shielding coating 11 made of heat-resistant rubber and simultaneously provides additional longitudinal fixation checkers 4 and 5 of the supplementary charge in the body due to the preload. On the inner surface of the cylindrical shell 1 is set to the support ring 12 and the perforated partition 13. The Central piece 4 of the charge is located on the axis of the housing with the opportunity to support one end on the end surface of the cylindrical sleeve 9 and the other on the perforated partition 1. All peripheral checkers 5 is displaced in the axial direction relative to the Central checkers 4 and are located around the circumference of 14 around her. In addition, all peripheral pieces 5 are located in the annular gap between the Central piece 4 and the inner surface of the cylindrical shell 1 with the opportunity to support one end on the inner surface of the solid bottom 2 and the other on the support ring 12. The Central piece 4 is coaxially mounted separator 15, which has a cross-section six-rayed structure and encapsulates the lateral surface of the peripheral checkers 5 from each other. In Fig. shows a generator with a single separator 15. Initiator 7 represents, for example, a portion of the granular powder in legarreta case and can be somehow fixed inside the cylindrical sleeve 9. Launcher 8 is, for example, the actuator, which is mounted in the threaded hole 16, which is made in solid bottom 2. To improve the reliability of mounting the launcher 8 and sealing the internal cavity of the cylindrical sleeve 9 between the solid bottom 2 and the initiator 7 filled with heat-resistant sealant 17, for example an epoxy compound. To prevent unauthorized operation and prevent damage to the site of inflammation solid bottom 2 provided with a cover 18. Block ohlord is of 6 can be made in the form of backfill mechanical mixture of crystalline metal salts and/or ultrafine powders inhibitors, limited on both sides of a metal or plastic mesh inserts 19 and fixed to one side of the perforated bottom 3, and the charge - perforated partition 13.

The fire-extinguishing aerosol generator operates as follows.

The generator can be mounted stationary in the place most likely (unwanted) fire or used as a floating fire extinguisher. In any case, the electrical contacts (Fig. they are depicted in the form of segments of electrical wiring) launcher 8 must be connected to a source circuit elektroimpulsa. When the operation of the generator in the Autonomous fire extinguishing system has means to automatically detect and run. After the occurrence and detection of the fire control pulse is supplied to the launcher 8, which when triggered, creates a short-term aimed at the initiator 7 jet of flame, igniting the latter. Initiator 7 is also quite short, but powerful source of high-temperature gases which initially fills the internal volume of the cylindrical sleeve 9 and then through the through holes 10 affect mnogochastichnyi charge aerosolforschung composition. The presence of a heat-resistant sealant 17 not only prevents semop oswaldoi the loosening launcher 8 when transporting the generator, but also increases its integrity in the process. A cylindrical sleeve 9, thus, plays the role of the pre-chamber which senses the pressure launcher 8 initiator 7 and shows only directed a jet of high-temperature "throttled" gas, preventing the destruction of the charge. The presence of a heat-resistant sealant 17 is not only to prevent inadvertent loosening launcher 8 when transporting the generator, but also ensures its integrity in the process. Due to the presence of the separator 15 igniter gases guaranteed directed into the gap between the peripheral cylindrical checkers 5 flowing around them tangentially. This scheme ignition charge is quite reliable and simple, as it ensures minimal variation and is provided with means available. Ignition and combustion of the peripheral cylindrical checkers 5 and the Central cylindrical pieces 4 occurs almost simultaneously in terms of the longitudinal expiration of the combustion products. Each piece is an independent gas source, so it formed a compact Central harness flame at the entrance to the cooling unit 6, as in a single piece. High-temperature combustion mnogochastichnogo charge aerosolforschung composition uniform front is over the entire cross-sectional area of the cylindrical shell 1 passing through the perforated partition 13, and metal or plastic mesh inserts 19 interact with the solid filler cooling unit 6. As a result of such thermodynamic interaction of high-temperature aerosoltherapy products of combustion with the surface of solid-phase coolant is the removal of crystallized water, the decomposition of a mechanical mixture of crystalline metal salts and ultrafine powders inhibitors hydrocarbon flames. Thus there is an effective reduction to the required temperature extinguishing gas-aerosol mixture with K to 390...K and its saturation inhibitors hydrocarbon flames. Formed in the generator of aerosol fire extinguishing mixture through the perforated bottom 3 goes directly into the zone of fire. The configuration of the perforated bottom 3 and its geometrical dimensions provide sustained combustion of the charge and the desired discharge characteristics.

Thus, all distinctive features of the prototype signs of fire-extinguishing aerosol generator aimed at obtaining a positive result, namely improving the reliability of operation and the achievement of high efficiency of quenching. The generator is characterized by the described set of essential features, is a new, industrially applicable and meets the invention is level.

1. The fire-extinguishing aerosol generator, comprising a cylindrical shell, a solid bottom and a perforated bottom, a charge aerosolforschung composition placed between a solid bottom and fixed to the body support ring, the cooling unit is fixed on the one hand a perforated bottom, and side charge aerosolforschung composition - perforated septum, and the initiator with the launcher, characterized in that it is provided with a cylindrical sleeve with a perforated side surface located on the inner surface of the bottom along the axis of the housing, while the charge aerosolforschung composition made mnogotochechnymi, consisting of one Central and at least two peripheral cylindrical pieces, and the Central cylindrical piece is located on the axis of the housing with the opportunity to support one end of the cylindrical sleeve and the other on a perforated wall, a peripheral cylindrical pieces are longitudinally axial offset relative to the Central circumference between the Central piece and a cylindrical shell housing, the initiator with the launcher is mounted within a cylindrical sleeve.

2. The generator according to claim 1, characterized in that it is provided with at least one separator for education accept the gap is between the side surfaces of the peripheral cylindrical pieces, which has in cross section of the beam structure and is installed on the Central cylindrical piece.

3. The generator according to claim 1 or 2, characterized in that the front bottom of the threaded hole for mounting the launcher initiator, and the inner cavity of the cylindrical sleeve between the solid bottom and the initiator is filled with heat-resistant sealant.



 

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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.

2 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: 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

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