Throw-type fire-extinguishing device

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


The proposed invention relates to fire fighting equipment, in particular to a device that generates gas-aerosol mixture of combustion inhibitors, and is intended for surround suppression fire in confined spaces by manually throwing device in the fire.

The level of this technology is characterized extinguishing device described in patent RU 2237503, AS 13/22, 3/00, 2004, which contains the site of initiation (ignition), a body composed of two counter-sealed containers disc shape with a gap between their flanging, forming an annular outlet nozzle, and attached to each tank through the heat-shielding layer of gypsum pyrotechnic charges, the combustion of generating fire extinguishing gas-aerosol mixture.

A feature of the described device is to perform site initiation in the form of the filled adhesive igniter composition resistor placed between the pyrotechnic charges, the diameter of which 1.7-2.5 times less than the overall diameter of the device, while flanging containers filled construction gypsum, forming a disk-lined nozzle.

The ignition of the two parts of the charge occurs from the center rapidly, almost instantaneously throughout the open ends surface.

The area of the disk nozzle outlet in a noticeable previse is the area of the critical section at its input, that provides enhanced fire extinguisher flow by increasing the speed of expiration, which allowed us to mount the pyrotechnic pieces flush with the lining flanging tank corps.

The additional effect of lining flanging tanks housing construction gypsum is that automatically throughout the disk nozzle extinguishing gas-aerosol mixture is actively cooled by contact to the evaporating water.

However, the continuation of the advantages of an inherent flaw: the inability to use the fire extinguishing device as throwing grenades for primary suppression fire in an enclosed volume, with the aim of further active extinguishing after the associated drop in temperature.

Described the massive generator fire extinguishing mixture is stationary and is designed to function for Autonomous automatic extinguishing the fire from the temperature sensors or smoke.

For manually throwing the design unusable due to ballast the content of the heat-shielding layer and the lining nozzle construction gypsum, low efficiency of fire extinguishing relatively small pyrotechnic charges and lack of funds to manual startup.

Noted shortcomings in throwing fire-extinguishing device according to patent RU 216409, AS 19/00, 2001, which for the purpose and number of matching characteristics is selected as the closest analogue suggested.

The known device comprises generating gas-aerosol mixture pyrotechnic charge consists of two parts, each of which is fixed through a bearing thermal insulation layer of gypsum in the capacity of disc form, forming the body. The vessel hull is bonded to the opposite a gap between the flanging, forming an annular outlet nozzle.

Under radial arm-bracket coaxially with the nozzle mounted node ignition grating type.

The free end of the pyrotechnic charge is below flanging than it forms a receiver for the accumulation and mixing generated extinguishing mixture, pressure equalization before the uniform jet after in a circle in the protected volume.

The disadvantage of this missile fire extinguishing device is the poor efficiency of the primary steps at a relatively low filling ratio because of the structural arrangement of the free ends of the pyrotechnic charges below flanging tank corps, necessary for the formation of a receiver, through which organized the specified thermodynamic regime expiration extinguishing gas-aerosol mixture through adjoining Lavoe output nozzle.

It's a quarter reduces weight functional pyrotechnic charge and, consequently, the protected volume at the specified limit of the concentration of aerosol fire retardants.

Coaxial output nozzle location node-manual ignition grating type (under the bracket-arm) is inconvenient in operation for mobile use in extreme situations due to limited workspace.

In addition, the device is not sealed, which reduces the functional reliability and service life limits the scope of use in conditions of high humidity atmosphere.

The foam gasket between the free ends of the pyrotechnic charges required for their isolation in official circulation from atmospheric moisture, is a physical obstacle to the spread of initiating thermal pulse from a host of ignition that, at least, does not improve conditions agriproduce and ignition charges over the entire surface of face burning.

Task to be solved by the present invention is directed, is to increase the efficiency of the basic steps and functional reliability by appointment.

The required technical result is achieved by the fact that in the known missile fire extinguishing device comprising a housing of two containers disc four is s, bonded counter, with the flange to form an annular outlet nozzle for the generated gas-aerosol mixture during combustion of pyrotechnic charges that are installed in each tank body through a layer of gypsum, and a host of ignition is located under the radial arm, according to the invention, the node ignition is installed in the threaded bushing mounting bracket, mounted coaxially with the through hole in the tank, covered with foam cover and adjacent to opperational inclined channel message with a gap between the free ends of the pyrotechnic charges that are installed flush with the flanging tanks, both Autonomous charge Packed in plastic film covers, and a nozzle formed through combining UCLA, performed on a supporting surface flanging, and a layer of gypsum plaster reinforced with metal mesh.

The distinctive signs provided stability for mobile convenient manual initiation of the operation of the device, a noticeable increase functional reliability, technological availability of structural elements for routine maintenance: routine inspection and repair.

Mount on one of the tanks hull mounting brackets with the screw sleeve for installation of node ignition creates a shift in the th location under the arm - below the output of the ring nozzle, which ensures that the node ignition for manual initiation and frees the handle for easy grip with the wrist in an extreme situation for throwing generator in the fire.

The host ignition coaxially through the hole in the tank shell provides structural unity of the circuit agriproduce the force of the flame to the free ends of the pyrotechnic charges that form the technological gap.

Running inside inclined pyrotechnic channel adjacent to the communication through-hole in the tank corps on the one hand and cross the gap between the free ends of both of the pyrotechnic charges on the other hand, is designed to transmit a firing pulse from the point of ignition when running on the simultaneous ignition of functional checkers across the face of the burning.

Installation of pyrotechnic charges flush with the flanging of the tank body generates when run in the General equal bore, gasovod in the gap between the free ends of the charges, combined with the annular outlet nozzle, promoting smooth, practically simultaneous over the entire surface, stable ignition of both pyrotechnic charges.

Packaging pyrotechnic charges in plait the internal polymer case creates their Autonomous integrity and allows the technological gap between the free ends of the pyrotechnic charges open for the dynamic distribution of thermal initiator the impulse.

Mechanically pressed foam insert between the node ignition and tank corps provides isolation communication connector opperating inclined channel of the through hole in the container.

Distributed by flanging pukli measuring the height with the combination of coaxial holes in them under the fastener during Assembly of the two containers housing automatically form a ring output a given nozzle orifice (the gap between the charges), without the use of additional funds.

Equipment thermal insulation layer of gypsum plaster reinforcement mesh significantly increases its dynamic strength (up to 5g) and functionality appointment with distance throwing devices, and carrier solidity of generator fire extinguishing mixture as a whole.

Therefore, every significant topic are needed, and their combination in a stable relationship are sufficient to achieve the novelty quality, extrinsic signs of dissociation, that is supplied in the invention technical problem is solved not by the amount of effects and new shoreface amount of signs.

The essence of the proposed invention is illustrated by drawings, which are purely illustrative purpose and do not limit the scope of the claims set of features of the formula. In the drawings, zobrazeno:

figure 1 - view of the device from below;

figure 2 is a section along a-a in figure 1.

In disc shaped metal containers 1 of the device installed pyrotechnic charge 2, placed in a film (0.3 mm) double plastic case 3.

Each charge 2 with a capacity of 1 (figure 2) is bonded by heat-shielding layer 4 of gypsum (GOST 125-79), which conditions may be reinforced with metal mesh 5 (No. 8-0,1 according to GOST 533-67).

The container 1 of the body are interconnected counter by means of bolt fasteners 6, mounted in the holes with UCLA 7, performed on the abutment surfaces flanging 8 each tank 1.

Total height combined with UCLA 7 is a transverse width of the gap 9 between the free ends of the charges 2 located at the same level with the flanging 8 (flush), and generates the flow area of the annular outlet nozzle 10.

In the transverse gap 9 on two bolts 6 fasteners fixed radial arm 11 (Fig 1).

Under the arm 11 at the bottom of the drawing (Fig 1 and 2), the container 1 is fixed to the bracket 12 with a threaded sleeve 13, which is screwed node 14 ignition, coaxial communication through-hole 15 in the tank 1.

Hole 15 (2) covered with foam insert 16, is pressed screwed node 14 of the ignition.

To the communication hole at back is July 15 adjacent inclined opperational channel 17 messages made in pyrotechnic charge 2, which is published on the free end surface, i.e. in the transverse gap 9.

The channel 17 is formed in the pressing of charge 2 and pouring gypsum on the Assembly through the installation process token.

The end of the foam plugs 16 are covered with a protective layer of varnish, which prevents the penetration of atmospheric moisture inside the device.

When assembling the pyrotechnic charge 2 installed at the bottom of the tank 1, where the reinforcing metal mesh 5 in the layer of mortar, gypsum, and with the effort of implementing it to align the free end flared 8 flush.

Then in the gap between the pyrotechnic charge 2 and the side surfaces of the container 1 is poured a solution of gypsum, solidification of which is formed a bearing thermal insulation layer 4, connecting structural elements in a monolithic structural unity.

Further prepared two Assembly kit connect the counter, combining their pukli 7 on the flanging 8, and fasten the mounting bolts 6, two of which are pre-mounted to the handle 11.

Before throwing device ("grenade") manually initiated by the node 14 of the ignition, the force of the flame which burned the foam blank 16

Node 14 ignition is supplied by means of the time delay for the initiation the Finance combustion of the pyrotechnic charge 2 duration, sufficient for the preparation and delivery device in the fire.

Handle 11 device manually scale were in the scope of the burning building through the window opening, door, then slam.

Thermal impulse forth by an inclined channel 17 is passed into the gap 9, where ignite the pyrotechnic charge 2 with the open end surfaces almost instantly.

During combustion of the pyrotechnic charge 2 is generated aerosol mixture of combustion inhibitors, which is expanding jet stream extends through an annular nozzle 10 into the protected volume, where suppressed the fire.

Evaporation associated with gypsum layers 4 water provides dilution extinguishing mixture of more environmentally friendly fire retardant and decrease of its temperature at the outlet of the annular nozzle 10.

Inkjet high-speed expiration of the generated aerosol products provides injection of ambient air, is further cooled and diluted stream, the filling volume of the protected space and creating a fire extinguishing concentration of inhibitors burning.

The proposed device is intended for use as a primary means of fire suppression to the survey, in particular to de-energizing of the power grid, appliances and equipment, the Les which may extinguish the Straits water of technical means. It gives you online mobile win in fighting fires in enclosed volumes, such as engine compartments, electrical control, the cabin of a vehicle.

Layer 4 of gypsum have low thermal conductivity, which prevents heat transfer to the container 1 housing, which is not heated and may not cause a secondary fire in the protected volume.

The proposed missile fire extinguishing device is characterized by high mechanical strength, structural integrity, reliable insulation from burning inside pyrotechnic charges, stable gas dynamics generated aerosol products in the form of a disk stream.

Field tests of prototypes propelling device confirmed the effectiveness of firefighting and its functional reliability, which can be recommended to the customer industrial supply for operation.

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 fire showed that it is not known, and given opportunities for industrial mass production throwing fire extinguishing devices in current production, it is possible to conclude that rela is availa able scientific C patentability criteria.

1. Throwing fire-extinguishing device comprising a housing of two containers disc shape, held together by a counter, with the flange to form an annular outlet nozzle for the generated gas-aerosol mixture during combustion of pyrotechnic charges that are installed in each tank body through a layer of gypsum, and a host of ignition is located under the radial arm, characterized in that the node ignition is installed in the threaded bushing mounting bracket, mounted coaxially with the through hole in the tank, covered with foam cover and adjacent to opperational inclined channel message with a gap between the free ends of the pyrotechnic charges that are installed flush with the flanging tanks, both charge offline Packed in plastic film covers.

2. The device according to claim 1, characterized in that the nozzle is formed by combining UCLA performed on a supporting surface flanging.

3. The device according to claim 1, characterized in that the layer of gypsum plaster reinforced with metal mesh.


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