Generator of extinguishing aerosol

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

 

The invention relates to the field of fire, namely, devices that generate aerosol flame retardants designed for extinguishing fires in enclosed and semi-enclosed volumes, such as manufacturing and warehouse facilities, cable tunnels, the compartments of vehicles and other such objects.

From the prior art in this field, the number of known devices of fire-extinguishing aerosol generators (GOA), in which the cooled products of combustion aerosol composition occurs when they pass through the narrow channel made of heat-absorbing material: patent RF №89963 (the fire-extinguishing aerosol generator class. AS 3/10, publ. 2009); No. 89964 (Device for three-dimensional aerosol fire extinguishing, class AS 13/22, publ. 2009).

In these generators due to the good thermal insulation of the housing can provide a relatively low temperature of its outer surface. Simultaneously, when the over spray on the reverse channel by heat exchange with a heat-insulating plaster layer it is possible to lower the temperature of the aerosol mixture to an acceptable level.

This, along with thermal insulation of the body is contained in the gypsum water (CaSO4·2H2O) when heated, it vaporizes and mixes with the aerosol cools it. However, it is known that the particles of the aerosol is in the main m the SSE carbonate and potassium bicarbonate, the solution has an alkaline reaction. Getting this solution to the protected equipment causes it to corrode. It should be noted that when forming the plaster thermal insulation layer of the water is not in the form of crystalline and in the free state and when the evaporation creates within the volume of the generator humidity close to 100%, which negatively affects the operational characteristics of the aerosol forming charge and generator as a whole. Thus, in particular, to reduce moisture authors of these patents suggest the use of plastic covers (RF patent No. 89964), which complicates the design and combustion of polyethylene case increases the toxicity of combustion products.

The disadvantages of this design is also the fact that this generator can be implemented at very low intensities of the filing of the aerosol mixture. In the known construction, this is achieved through the process of burning pieces not over the entire surface, but only on its end face.

Low flow rate of the aerosol mixture substantially narrows the scope of applications of GOA and makes it almost impossible for their use in premises with a high degree of leakage.

The authors of the patent of the Russian Federation No. 49455 ("the fire-extinguishing aerosol Generator class. AS 3/00, publ. 2005) also used the comfort reversible scheme expiration of the aerosol mixture, but the burning aerosol forming charge is arranged on the entire surface, which allows to achieve a high flow rate of the aerosol mixture. Some reduction in the temperature of the aerosol mixture is achieved by its interaction with the cooling elements in the stream.

The disadvantages of this design include high temperature aerosol mixture at the outlet of the generator and the relatively high temperature of the body (cylindrical shell)in contact with high-temperature aerosol mixture.

Also known GOA containing coaxially and sequentially spaced housing a pyrotechnic charge and the mixing chamber of the ejector: RF patents №2140310 (CL AS 13/22, publ. 1999), No. 2205673 (CL AS 13/22, publ. 2010). These generators include a housing within which are coaxially arranged pyrotechnic charge and the camera ejecting gas (receiver), which are surrounded by heat-insulating layer of plaster, performed on the whole inner surface of the housing. The housing is closed by a cap with igniter (activator). On the cover distributed outlet openings. Coaxially to the housing fixed cylindrical casing of larger diameter than the housing, and partially overlapping the body with the formation of the annular gap for the ejected air and the mixing chamber with the air (the camera about what ladenia).

For example, "Device for three-dimensional aerosol extinguishing fires" in patent No. 2140310 includes a housing within which are coaxially arranged pyrotechnic charge and the camera ejecting gas (receiver), which are surrounded by heat-insulating layer of plaster, performed on the whole inner surface of the housing. The housing is closed by a cap with igniter (activator). The cover is made (distributed) output apertures. Coaxially of the casing is fixed a cylindrical casing of larger diameter than the housing, and partially overlapping the body with the formation of the annular gap for the ejected air and the mixing chamber with the air (cooling chamber).

The disadvantages of these designs include an extensive zone of mixing and ejecting the ejected streams that, on the one hand, due to the serial arrangement of the ejecting nozzle and generator aerosol composition, and on the other, with a large enough scale mixing due to the size of the high-temperature jet ejecting. In this generator, the combustion aerosol forming charge is arranged on the end surface, which provides the flow rate of the aerosol is not higher than 0.5 g/s·m3for thermal insulation of the casing used in construction gypsum, containing in its composition a significant the number of water which, as noted by the authors, contributes to the cooling of the combustion products. However, as noted above, significantly reduces the warranty period of storage. To avoid this requires special sealing measures aerosol forming charge.

The closest technical solution according to the essential features and achieved technical result of the claimed device is "a Device for volumetric aerosol fire extinguishing" RF patent No. 2140310, which is selected as a prototype.

The challenge which seeks the proposed device is the development of fire-extinguishing aerosol generator, with an optimal combination of indicators of the fire extinguishing efficiency, temperature of the aerosol stream and the intensity of the extinguishing aerosol in the protected volume with a low degree of tightness.

The proposed fire-extinguishing aerosol generator using achieves the following technical result:

the decrease in the proportion of chemical cooler in relation to the mass of aerosol forming charge;

- lowering the temperature of the aerosol mixture generator output due to structural zoom mixing ejecting jets (coaxial construction and the presence of a bump) with a simultaneous increase in the cylinder is enta ejection;

- increasing the flow rate of the aerosol from the position as "top"and "bottom-up" due to combustion over the entire surface of the aerosol forming charge.

The achievement of the technical result is ensured by the fact that the fire-extinguishing aerosol generator comprising coaxially mounted between an annular gap for the ejected air cylindrical casing and the casing has a lid and a bottom, a mixing chamber formed in one of side walls of the casing, as well as the activator and a pyrotechnic charge that is installed inside the housing with a possibility of forming the camera ejects the aerosol, and made inside a layer of material, cooling the aerosol generator is made with the possibility of release of an aerosol in a volume to be protected, characterized in that the cylindrical casing and the casing are connected coaxially, the generator is further provided with a baffle, fixed by providing a partial overlap of the side surface of the housing and with the formation of the annular nozzle for the production of aerosol, a layer of cooler aerosol placed sequentially in relation to the pyrotechnic charge to form between them, and between the side surfaces of the charge and the case of additional free volume as a function of the combustion chamber, Luggage erectinol is its aerosol formed perforated bottom of the case and bumper, and the bottom is perforated.

The generator, it is preferable to perform with the ratio between the sectional area of the annular channel for the release of the aerosol and the initial area of the pyrotechnic charge in the range of 0.014-0,025, it allows to reach the maximum increase in flow rate of the aerosol from not only from above but from below.

The generator is made with a ratio of the mass of the cooler to the mass of the charge, determined in the range of 0.5-0.7, which allows a significant reduction of the share of chemical cooler relative to the weight of the charge and simultaneously reducing the temperature of the walls of the shell.

In the generator as a layer of cooler can be used a layer-based carbonates of alkali and alkaline earth metals.

To further reduce the temperature of the walls of the generator inside the housing, cover and bumpers can be fitted with insulation, and the insulation is preferable to use materials with crasneanscki impregnation.

The reliability of the generator may be additionally provided so that the pyrotechnic charge and the layer of cooler is fixed in the housing with compensation springs and spacers.

The convenience and efficiency of operation can be provided that the generator is equipped with a bracket, done is authorized in the form of a U-shaped bracket, and the bump is rigidly connected to the casing in at least three points spaced evenly around the circumference of the side surface of the casing.

Given the direction of release of the aerosol stream from the generator can be provided that the housing is rigidly connected with the casing by fasteners at two points located diametrically relative to each other, and additionally fixed with bracket with the possibility of rotation of the generator relative to the bracket.

While the cover and the bracket it is preferable to perform with the possibility of fixing the position of the generator at different angles relative to the bracket.

One of the variants of a design may be, the permanent connection of the cover, for example rolling.

The essence of the proposed utility model is illustrated by drawings.

1 schematically shows a General view of the generator in the cut. Figure 2 schematically shows the attachment points of the casing, the casing and bracket, and figure 3 - mounting the chassis, bumpers and bonnet.

The design of the generator is case (1) with a lid (2) and a perforated plate (3). Case (1) is coaxially fixed to the casing (4) with the formation of the annular gap (5) for sucking the ejected air from the protected volume. Between the housing (1) and cover (4) is formed by the mixing chamber (6).

In the lid (2) of the housing (1) Montero is an activator (7). Inside the housing (1) has a pyrotechnic charge (8) and consistently followed by a layer of cooler (9), formed by the combustion chamber (10) in the form of free volume between the side surfaces of the charge (8) and housing (1), and between the end surfaces of the charge (8) and a layer of cooler (9).

For bottom (3) of the housing (1) installed bumpers (11) with the formation between the camera ejects the aerosol (12). Bumpers (11), for example, can be performed telcobridges shaped to partially overlap the side surface of the housing (1) with formation of an annular nozzle (13) for release ejecting the aerosol into the mixing chamber (6). On the inner surface of the housing (1), cover (1) and bumpers (11) can be performed insulating layer (14).

The stillness of the charge (8) and a layer of cooler (9)is installed between the perforated plate (3) and a perforated surface (3), is provided by a compression spring (15) and spacers (16).

The generator can be mounted on the bracket (17) (figure 2).

Bumpers (11) with a housing (1) and cover (4) is fastened by bolts (18), for example 3 points, distributed evenly around the circumference (figure 3). Case (1) and the cover (4) bolts (19) is fastened to the bracket (17) with the possibility of rotation of the generator relative to the bracket (17). The fastener (20) provides for the registration provisions of generationipod required angle relative to the bracket (17), and therefore, regarding a possible flashpoint.

The generator (1) includes a housing (1), cover (2) and the perforated plate (3). Case (1) is coaxially fixed to the casing (4) with the formation of the annular gap (5). Between the housing (1) and cover (4) is formed a mixing chamber (6).

When applying an electric pulse to elektroaktivator (7) is the ignition of aerosol forming charge (8), combustion chamber (10) to get close to the equilibrium composition of combustion products. After passing through a layer of cooler (9) the products of combustion after interaction with a baffle (11) fall in the camera ejects the aerosol (12), the preset pressure in which is provided a certain amount of the cross-section area of the annular nozzle (13). Through the annular gap (5) is the ejection of outside air and mixing with the aerosol in the mixing chamber (6), the length of which is chosen based on the optimal ratio between the size of the generator and the temperature in the outlet section of the mixing chamber, i.e. at the output of the generator.

In the process of testing, we measured the pressure in the combustion chamber and the temperature along the length of the aerosol jet installation 3 thermocouple type chromel-Copel in each section. The test results presented in the table.

On the basis of p is acrostich characteristics of the generator acceptable level pressure (P) in the generator is adopted to 1.5 ATM.

Temperature (T°C) jet at the exit on safety standards should not exceed 280-290°C.

Legend in the table below:

P is the pressure in the combustion chamber;

F1- the cross-sectional area of the annular nozzle (13) ejecting the aerosol;

F2- sectional area of the gas ejected;

M ZAR. - weight of aerosol forming charge;

M of the OHL. - weight of the cooler;

I - the flow rate of the aerosol jet;

T is the temperature of the aerosol stream in the outlet section of the generator.

Extinguishing the hearth top/bottom means the impact on the hearth of an aerosol stream from the upper position or lower position.

Analysis of the test results confirmed that the use of all essential features of the formula (sample No. 1-5) to achieve the stated technical result on all counts.

The deviation from the declared parameters of the essential features (examples No. 6-10) does not allow to achieve the desired technical effect:

is not provided with the extinguishing of the provisions of the "bottom" (examples№6, 8, 10);

- suppression is provided, but at dangerously high pressure in the casing (sample No. 7) or an unacceptably high temperature of the jet at the outlet section of the generator (sample No. 9).

The test device of the prototype was carried out in the same conditions as the proposed generator. Results the ATA tests show, the device prototype does not provide extinguishing the hearth when filing an aerosol stream with a lower position (from the floor) when the degree of leakage 0,012.

The proposed set of essential features not known from the prior art, and the achievement of the technical result not obvious to a person skilled in the field of fire.

The above materials confirm that the device meets all the requirements of eligibility under current law and is aimed at solving the problem.

Table
The results of the tests
OptionsThe results in examples No.the placeholder
123456789101112
P, kg/cm20,95 1,151,350,751,050,561,500,651,350,950,20,2
F1cm2151220362525173620151010
F2cm2780780140014001400780140014001400780132132
F1/F20,0190,0150,0140,0250,018 to 0.0320,0120,0280,0140,0190,070,07
M ZAR., kg1,51,53,03,03,01,53,03,03,01,53,03,0
M of the OHL., kg0,90,61,51,52,10,92,11,51,21,21,81,8
M of OHL/SAR0,60,70,50,50,70,60,70,50,40,8 0,60,6
I, kg/s·m3×1032,72,93,22,12,82,03,42,23,22,70,50,5
T, °C250240270240240230290240320200400400
The degree of leakage0,0120,0120,0120,0120,0120,0120,0120,0120,0120,0120,0120,001
Extinguishing the hearth top/bottom +/++/++/++/++/++/-+/++/-+/++/-+/-+/+

1. The fire-extinguishing aerosol generator comprising coaxially mounted between an annular gap for the ejected air cylindrical casing and the casing lid and bottom, a mixing chamber formed in one of side walls of the casing, as well as the activator and a pyrotechnic charge that is installed inside the housing with a possibility of forming the camera ejects the aerosol, and made inside a layer of material, cooling the aerosol generator is made with the possibility of release of an aerosol in a volume to be protected, characterized in that the cylindrical casing and the casing are connected coaxially, the generator is further provided with a baffle installed in parallel with the bottom attached with providing a partial overlap of the side the surface of the housing and with the formation around the casing annular nozzle to release the entraining the aerosol layer cooler aerosol placed sequentially in relation to the pyrotechnic charge coord is m between them, and between the side surfaces of the charge and the case of additional free volume as a function of the combustion chamber, the camera ejects the aerosol is formed between the bottom of the chassis and bumpers, and the bottom is perforated.

2. The generator according to claim 1, characterized in that the ratio between the area of the annulus to release the entraining the aerosol and the initial area of the pyrotechnic charge is determined by the range of 0.014-0,025.

3. The generator according to claim 1, characterized in that the ratio of the mass of the cooler to the mass of the charge is determined by the range of 0.5-0.7.

4. The generator according to claim 1, characterized in that as a layer of cooler use layer-based carbonates of alkali and alkaline earth metals.

5. The generator according to claim 1, characterized in that the inner surface of the body and bumpers equipped with thermal protection.

6. The generator according to I, characterized in that as the insulation using materials with crasneanscki impregnation.

7. The generator according to claim 1, characterized in that the pyrotechnic charge and the layer of cooler is fixed in the housing with compensation springs and spacers.

8. The generator according to claim 1, characterized in that the supplied bracket, made in the form of U-shaped staples.

9. The generator according to claim 1, characterized in that the bump stop is rigidly connected with the casing not less than three then the Kah, evenly spaced around the circumference of the side surface of the casing.

10. The generator according to claim 1, characterized in that the housing is rigidly connected with the casing by fasteners at two points located diametrically relative to each other, and with additional fastening in these same points with bracket with the possibility of rotation of the generator relative to the bracket.

11. The generator according to claims 1 and 10, characterized in that the casing and the bracket is made with the possibility of fixing the position of the generator at different angles relative to the bracket.

12. The generator according to claim 1, characterized in that the cover is connected to the housing narashimha.



 

Same patents:

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 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: 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

Up!