Mobile fire extinguishing plant

FIELD: fire safety.

SUBSTANCE: in a mobile fire extinguishing plant, which comprises a portable fire extinguishing device, which represents a stored pressure extinguisher, filled with incombustible liquid, with a stop-starting device of manual type and a system of liquid supply with a foam generator, additionally there is a system of air gas supply, which includes a microswitch installed on the stop-starting device so that whenever the fire extinguisher starts, simultaneously a compact compressor is switched on, which operates from a portable accumulator unit.

EFFECT: increased efficiency of extinguishing fires of various classes as a result of foam generator inclusion into a fire extinguisher, which produces intense air mechanical foam.

2 cl, 3 dwg

 

The invention relates to portable fire-extinguishing installations, in particular for fire extinguishers.

Closest to the technical nature of the object of the claimed invention is an installation realized in the fire extinguisher described in published international application WO 94/06517 (published 31.03.1994, IPC A62C 31/03; B05B 1/12), and contains a container of fire extinguishing fluid, the system liquid displacement from the container, including the siphon tube, trigger-locking device that is connected to the outlet of the siphon tube, restrictor flow rate to regulate the cross-sectional area of the flow channel depending on the fluid pressure in the tank, the spray liquid with a centrifugal swirl of fluid flow and an exit nozzle, and a pipeline connecting the outlet shut-off trigger sprayer with fluid.

A disadvantage of the known device is relatively low efficiency of fire and irregularity of liquid supply and the low degree of dispersion of the fire extinguishing stream.

The technical result - improving the efficiency of fire fighting different classes through the use of high air-mechanical foam.

This is achieved by installing mobile-containing fire fighting portable fire extinguishing means, represent the its a fire extinguisher injection type, filled with non-flammable liquid with a trigger-locking device manual type and the system fluid with foam generator, additionally contains a gas supply system (air), which includes a microswitch mounted on the trigger-locking device in such a way that at the start of the fire extinguisher at the same time, a compact compressor operating from a portable battery pack.

Figure 1 shows the installation diagram, figure 2 presents the scheme of the foam generator with counter-swirling flow type VZP, figure 3 - section a-a figure 2.

Installation for mobile fire extinguishing contains portable extinguishing agent 1, representing the fire extinguisher injection type, filled with non-flammable liquid with a trigger-locking device 2 manual type and system 3 liquid supply (for example in the form of a cone), the gas supply system (air), which includes the microswitch 4, mounted on the trigger-locking device 2 in such a way that at the start of the fire extinguisher at the same time, compact compressor 6, working from a portable battery unit 5, for example a voltage of 12 B.

Compact compressor 6 through the duct 7 delivers compressed air into the foam generator 10 through an annular nozzle 9. Non-flammable foaming the liquid flows through suporn the starting device 2 manual type, and system 3 the fluid and the pipe 8.

Foam generator with counter-swirling flow type VZP (figure 2 and 3) comprises a cylindrical housing 10, which is made with a hole for the supply of foam solution from a fire extinguisher, and rigidly connected with it a coaxial cylindrical sleeve 15. Inside the housing is made of three internal, sequentially connected to each other and coaxially with the housing cavity 10: confuser 11, a cylindrical cavity 12, ejecting air through, made it at least three tangential channel 13, and a diffuser 14, connected to a sleeve 15 which, on its sides, also made two rows ejecting the tangential air channels 16. The sleeve 15 is closed from the end opposite the cone, through the Union nut 17 round plate 18 with perforations in the form of holes.

Installation of mobile fire fighting works as follows.

Portable extinguishing agent 1, representing the fire extinguisher injection type, fill a non-flammable liquid and gas, configure trigger-locking device so that when pressing the trigger injection fire extinguisher at the same time included: system 3 the fluid (water), gas (air), served in the foam generator 10 two streams: the first fluid flow from a fire extinguisher on the pipelines is 8, the second flow of compressed air through the annular nozzle 9.

The foam generator 10 with a counter-swirling flow type VZP works as follows. When applying foam solution under pressure into the cavity of the valve housing 10, it is through the confuser 11, a cylindrical cavity 12, where the first twist of the entraining air through the tangential channels 13, enters the diffuser 14.

The cylindrical cavity 12 is the first step swirl the liquid and the second stage is a cylindrical cavity of the sleeve 15 with its located on the edges of the tangential channels 16. The direction of twist of the swirler first and second stages of the opposite, so in a cylindrical cavity in front of the round plate 18 with perforations in the form of holes interact eddy flow with their fragmentation into fine thread. With the passage of the swirling flow through a circular plate 18 is further fragmentation of liquid droplets in two rotating in the opposite direction of the vortices, with the production of fine-phase.

Even with the boundary conditions of the generator, i.e. at low pressure foaming solution at the inlet of the foam generator (8 ATM) and low ambient temperatures (-15C), the foam under the pressure created by progenia what'or, served in a given object, where it forms spreading on the surface of an object, persistent, not destroyed by fire film, which stops the oxygen in the combustion zone and the fire stops.

The extinguishing effect of the foam-based insulation surface burning liquid oxygen from the air and the heated combustible vapors emitted from the surface of the liquid. The foam not only dramatically reduces the evaporation process, but also cools the surface of a burning liquid. Air-mechanical Lena is formed by mechanical mixing of air and surfactant (foaming agent IS 1 or 6). In air-mechanical foam contains about 90% (by volume) of air and 10% aqueous solution of the foaming agent. To extinguish fires effectively apply high air-mechanical foam, which contains about 99% (by volume) of air 0,96% water and about 0.04% of foaming agent. The multiplicity of conventional air-mechanical foam 812, and the high is over 100. The resistance of the air-mechanical foam: from 20 to 40 minutes

The foam should be applied to the burning of cotton fiber other poorly wettable fibrous materials. Especially effective foam for extinguishing fires of flammable liquids (flammable liquids), as well as flammable liquids.

1. Installation of mobile fire extinguishing, containing a portable tool, after which otusanya, representing the fire extinguisher injection type, filled with non-flammable liquid with a trigger-locking device manual type and the system fluid with foam generator, characterized in that it further comprises a gas supply system (air), which includes a microswitch mounted on the trigger-locking device in such a way that at the start of the fire extinguisher at the same time, a compact compressor operating from a portable battery pack.

2. Installation of claim 1, wherein the generator comprises a cylindrical housing, which is made with a hole for the supply of foam solution from a fire extinguisher, and rigidly connected with it a coaxial cylindrical sleeve, and the inside of the case is made of three internal serially connected to each other and coaxially with the housing cavity: the confuser, a cylindrical cavity, ejecting air through at least three tangential channel, and a diffuser coupled to the sleeve, in which the edges are also made two rows ejecting the tangential air channels, and the sleeve is closed with an end face opposite to the diffuser, through the Union nut round plate with perforations in the form of holes.



 

Same patents:

FIELD: fire safety.

SUBSTANCE: in a mobile fire extinguishing plant, which comprises a portable fire extinguishing device, which represents a stored pressure extinguisher, filled with incombustible liquid, with a stop-starting device of manual type and a system of liquid supply with a foam generator, additionally there is a system of air gas supply, which includes a microswitch installed on the stop-starting device so that whenever the fire extinguisher starts, simultaneously a compact compressor is switched on, which operates from a portable accumulator unit.

EFFECT: increased efficiency of extinguishing fires of various classes as a result of foam generator inclusion into a fire extinguisher, which produces intense air mechanical foam.

2 cl, 3 dwg

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to portable fire extinguishing plants. The mobile fire-extinguishing plant comprises a fire extinguisher of pump type with a stop and start device of manual type and a system of liquid supply with a foaming agent, The fire extinguisher of pump type is filled with non-flammable liquid and comprises a system of gas (air) supply. The system of air supply includes a microswitch installed on the stop and start device. When the fire extinguisher has been started, simultaneously the compact compressor will also start, supplied from a portable accumulator unit. The foaming agent comprises a sprayer, an ejecting nozzle and a splitter of double-phase flow.

EFFECT: increased efficiency in extinguishing of fires of different classes due to usage of multiple-use air mechanical foam.

5 cl, 2 dwg

FIELD: fire safety.

SUBSTANCE: mobile fire extinguisher comprising a portable extinguishing means, which is a fire extinguisher of rechargeable type, filled with non-flammable liquid, with a lock and release device of manual type and a liquid supply system with a foam generator additionally comprises a gas supply system which comprises a microswitch mounted on the lock and release device so that when starting the fire extinguisher the compact compressor is activated simultaneously, powered by a portable battery unit, and the foam generator comprises a housing made in the form of a cylindrical cup with a horizontal axis coaxial to the axis of the nozzle and the attachment means of the nozzle to the pipeline for supply of water or foam solution, and on the side of the foam output the housing is coaxially attached to the confuser, and at the junction of the housing and the confuser a net or a pack of nets in the cage is mounted, and for easy carrying and use of the foam generator it is provided with a transverse beam and longitudinal handles between which there is a cage with a fitting of supplying compressed air from the compact compressor, closing the openings for supplying compressed air into the housing, which enhances the foam expansion, and the nozzle of the foam generator is attached to the housing by means of variable length elements, to the bottom of the housing by the plates, with which the nozzle is mounted at a predetermined distance relative to the surface of the net, depending on the desired expansion and long-range capability of the jet, and the longitudinal handle is able to be attached to the cylindrical surface of the housing along its generating line at locations corresponding to the changed length of the fastening elements, the nozzle comprises a hollow cylindrical housing connected to the diffuser, in which the orifices are made, the hollow housing consists of a cylindrical part with an external thread for connection to the fitting for supplying liquid and two successively connected and coaxial with it hollow cylinder-conic belts, and coaxially to the housing, in its lower part, the diffuser is fastened made in the form of a cup, in the bottom of which the horizontal and inclined orifices are made at an angle 45 to the axis of the diffuser, and in the cylindrical belt of the housing at least one row of radial openings is made, which axes lie in a plane perpendicular to the axis of the housing. The number of openings in each row is equal to at least three. The housing and the diffuser form between each other several coaxial internal chambers: cylindrical and the conical chamber located between them. One of the cylindrical chambers is used for the sprayed liquid supply, and the conical and cylindrical chambers are the expansion chambers.

EFFECT: improving efficiency of extinguishing fires of various classes through the use of high-expansion air filled foam.

3 dwg

FIELD: fire safety.

SUBSTANCE: mobile fire extinguishing unit comprising a container with liquid, designed for fire extinguishing, a system of supplying pressurised liquid, a swirler of liquid flow with guide elements, a liquid atomiser connected through the feeding pipeline with the container, the atomiser housing is made in the form of a feeding fitting with the central opening and rigidly connected to it, and a coaxial cylindrical sleeve with an external thread, and the nozzle is connected coaxial to the housing, in its lower part, by the sleeve with internal thread, made in the form of a centrifugal swirler of liquid flow in the form of a cylindrical insert with at least three tangential inlets in the form of cylindrical openings, and the sleeve is a part of the nozzle and is mounted coaxially and in alignment in relation to the centrifugal swirler, in the end surface of which the cylindrical orifice is made, and the centrifugal swirler is mounted in the cylindrical chamber of the housing to form an annular cylinder chamber for supplying liquid to the tangential inlets of the centrifugal swirler and is connected to the diffuser outlet chamber, and tangential inlets are made in the form of channels located tangentially to the inner surface of the cylindrical insert, and the confuser is coaxially attached to the sleeve, the inner cavity of which through the openings made on its lateral surface connects its cavity with the outside air, and at the output of the confuser the throttle in the form of a cylindrical shell is fixed, which increases the jet range of the entire unit.

EFFECT: improving the efficiency of fire-extinguishing through fine droplets in the flow and range of feeding the gas-drop flow due to the compactness of the jet.

2 dwg

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