Fire-engine unit

 

Fire unit can be used for fighting forest fires in remote locations and provides the technical result consists in increasing the effectiveness of plamegate by cooling the combustion zone and the displacement of free oxygen, reducing the consumption of flame retardant substances, that is, the increase in performance when fighting, and the formation in the zone of clearing fire-resistant barrier put in a layer of peat substances. Fire Assembly includes a vehicle that has a device for extinguishing substances, attachments and source of the working substance. The feeder of the working substance made in the form of optical drive installed nozzle apparatus. The unit has a compressor, faucet, dispenser, and a source of additional absorbing means. Manipulator with tanks (tanks) located on the rotary platform, and the compressor, mixer and dispenser mounted on the chassis of the vehicle. To allow the device is made in the form of multi-jet ejector, which is a hydraulic device that provides shock preload supplied flame retardant mixture. The manipulator is eskay correction pressure extinguishing fluid at the outlet of the ejector. The ejector is equipped with a set of nozzles of different diameters and configurations to ensure penetration of liquid jets to a predetermined depth. 2 C.p. f-crystals, 2 Il.

The invention relates to fire technique, namely, machines for fighting forest fires, and can be used in hard to reach places.

Known fire-engine unit containing a tracked vehicle on which the device for extinguishing substances, remote control and ancillary tool for removing soil areas (SU 1729526 A1, 30.04.92).

A disadvantage of the known fire unit is a low efficiency when fighting large forest fires.

Also known fire unit based forestry tractor or conversion of tracked or wheeled vehicles, on a frame which is mounted fire-technical equipment consisting of a catapult with the drive of the hopper to the ground, hung behind the equipment to remove soil layer and trekhzubogo Ripper front of the machine with hydraulic control and a driver's cab, designated worker soldier-operator and motor propulsion unit (RU 2069577 C1, 27.11.96).

A disadvantage of the known fire trucks one is you want to make during the fire.

Known fire-engine unit containing a vehicle that has a device for extinguishing substances, remote control, ancillary equipment; the unit is equipped with a composite pontoons, made with the possibility of folding along the machine, and the carriage shaft for supply of fire extinguishing fluid in the combustion zone, pontoons serve as containers for water and fire extinguishing fluid (EN 2137518 C1, 20.09.99).

This unit also has a low efficiency in extinguishing burning peatlands, because the gun carriage leads to high flow of fire extinguishing fluid, which spreads over the surface and does not penetrate into the thickness of the peat bog.

Known fire-engine unit containing a vehicle that has a device for extinguishing substances, attachments, the source of the working substance, and a device for supplying the working substance is made in the form of the manipulator contains a nozzle apparatus from multiple nozzles and compressor (EN 2053000 C1, 27.06.96).

This unit has the common fault with counterparts with the suppression of burning peatlands - high flow rate.

Known fire-engine unit containing installed on transport is a, made in the form of an arm, which is installed to allow the device is made in the form of multi-jet ejector (US 4875526 And 24.10.89).

The unit has drawbacks, namely high consumption of water, reaching up to 3 t 1 m3peat does not guarantee reliable termination of combustion in the thickness of the peat layer, because the water, spreading out over the surface, penetrates deep and has no effect on the subsurface combustion zone. Substance itself peat contains a bound oxygen, which makes possible its burning even without access of oxygen from the outside.

Object of the invention is the supply of extinguishing agent into the thickness of the peat bog with the distribution of the substance throughout the volume of the combustion zone, subject to suppression.

The technical result of the invention is to improve the efficiency of plamegate by cooling the combustion zone and the displacement of free oxygen, reducing the flow of extinguishing substances, i.e., the increase in performance when fighting, the formation in the zone of clearing fire-resistant barrier put in a layer of peat substances.

The technical result is achieved by the fact that the fire unit containing mounted on the transport device, the source work is and, installed to allow the device is made in the form of multi-jet ejector, according to the invention contains a source of additional absorbing means, compressor, mixer and dispenser, with the manipulator, the source of the working substance and the source of additional absorbing means arranged on the rotary platform, and the compressor, mixer and dispenser mounted on the chassis of the transport device, and the above multi-jet ejector is a hydraulic device that provides shock preload supplied flame retardant mixture.

The manipulator is installed indicator-keys to the thickness of the peat layer within the zone of irrigation with automatic correction of the pressure of the extinguishing fluid.

The ejector has a set of nozzles of different diameters and configurations to ensure penetration of the jets extinguishing liquid to a predetermined depth.

The invention is illustrated in figures 1 and 2.

In Fig. 1 presents a schematic diagram fire unit; Fig. 2 - scheme of the coverage zone of the irrigation arm. 1 - vehicle chassis, 2 - arm, 3 - hydraulic unit, 4 - ejector nozzles for forming jets, 5 - the source of the working substance passing liquid carbon dioxide, 7 - compressor, mixer and dispenser for feeding extinguishing components in gidroezhektorov, 8 - rotary platform manipulator.

Attachments (not shown) is a set of devices for removal of soil (bulldozer, ploughs etc) and for cutting shrubs and trees.

This embodiment of the device allows to reduce the consumption of flame retardant liquid to 1.2-1.5 l of 1 m3the peat.

Fire unit operates as follows.

Usually on the chassis 1 set tank 5 filled with water, but the water flow reaches three tons per cubic metre of peat and does not guarantee reliable termination of combustion in the thickness of the peat layer, because the water, spreading out over the surface, penetrates deep and has no effect on the subsurface combustion zone.

Any way to limit the access of oxygen to the combustion zone in the depth of peat (backfill soil, plowing, etc.) known fire units are inefficient, because the peat being a porous material contains in its mass not only free oxygen, but also bound oxygen, which makes possible its burning without oxygen.

To reduce surface tension and preap-3, sulfonate NB, nekal HB, etc.

Adding to the water of 0.2-4.0% wetting agent allows in 2-2,5 times to reduce the consumption of water and reduce the time of quenching. Therefore, in this invention the tank (tank) 5 contains water with these additives and tank 6 contains liquid carbon dioxide. The supply of carbon dioxide, which will displace the air out of the thick peat helps stop burning (at a concentration of air is 30% in the presence of carbon dioxide combustion due to the unbound oxygen terminated).

Tanks 5 and 6 are located on the rotating platform 8, and placed on the chassis, compressor, mixer and dispenser in one unit 7. Fire unit contains a hydraulically controlled manipulator 2 with a maximum departure of the working body up to 9 m and a lifting capacity at maximum reach up to 2 tons At the end of the manipulator 2 is a hydraulic device 3 for shock preload supplied flame retardant mixture (70% water with a wetting additives and 30% carbon dioxide. The hydraulic device 3 provides the pressure (shock) up to 200 ATM and the flow of the mixture in thin streams through multi-jet ejector 4 with a set of nozzles of different diameters and configurations to ensure penetration of the jets extinguishing liquid to a predetermined depth.

danou the veil inside the burning material, the number of jets is several tens and evenly distributed in the area of 1.5-2.0 m2on the surface of the earth. High shock pressure and thin jets provide penetration extinguishing liquid to a depth of 2.0 to 2.5 m and more.

The hydraulic device 3 and the ejector 4 allow you to create a three-dimensional curtain of extinguishing fluid throughout the volume of the peat.

The flow of extinguishing fluid is 1.2 to 1.5 l of 1 m3the peat. Thus, water consumption (extinguishing fluid) is reduced by not less than 2000 times compared with surface irrigation of burning peat. Take the amount of water and liquid carbon dioxide is about 2 t and placed in tanks (tanks) 5, 6. Such reserves are sufficient to extinguish the burning of the peat bog on the square 700-1000 m2when the depth of the peat layer 2 m

In other words, screen repaid peat width of 1.5-2.0 m at the depth of peat can be created on the length of 700-1000 m on one charge. flame retardant mixture.

To increase the effectiveness of firefighting and reliability of the fire unit contains located on the manipulator 2 indicator-keys to the thickness of the peat layer within the zone irrigation device automatically is not shown) may be neutron or-neutron.

Claims

1. Fire-engine unit containing mounted on the transport device, the source of the working substance, attachments and device for feeding the working substance, made in the form of an arm, which is installed to allow the device is made in the form of multi-jet ejector, characterized in that it contains a source of additional absorbing means, compressor, mixer and dispenser, with the manipulator, the source of the working substance and the source of additional absorbing means arranged on the rotary platform, and the compressor, mixer and dispenser mounted on the chassis of the transport device, and the above multi-jet ejector is a hydraulic device that provides shock preload supplied flame retardant mixture.

2. Fire Assembly under item 1, characterized in that the manipulator is installed indicator-keys to the thickness of the peat layer within the zone of irrigation with automatic correction of the pressure of the extinguishing fluid.

3. Fire Assembly under item 1 or 2, characterized in that the ejector has a set of nozzles of different diameters and configurations to ensure penetrated the

 

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FIELD: fire-fighting equipment, particularly means to prevent freezing water store in tank of fire-extinguishing tanker by heat of fuel combustion.

SUBSTANCE: method involves passing-by water under pressure in accordance with "tank-pump-tank" scheme through dispersing cavitation head installed on high-pressure drain connection pipe and feeding water under water layer in tank. Head is formed as replaceable deflector plate spaced a distance of 1-3 outlet head orifice diameter perpendicular to water flow. Outlet head orifice diameter is 25 - 75 mm.

EFFECT: prevention of water freezing and elimination of still spaces in tank under low environment temperature, minimized modification of fire-extinguishing tanker units.

3 cl, 2 dwg

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