Installation of mobile fire extinguishing

FIELD: fire prevention facilities.

SUBSTANCE: invention relates to portable fire extinguishing installations. At that the installation of mobile fire extinguishing consists of a portable means of fire extinguishing which is stored-pressure extinguisher filled with inflammable liquid, with a manual lock and release device and a liquid supply system with a foam generator, additionally comprises a gas (air) delivery system, which comprises a microswitch mounted on the lock and release device, so that when starting the fire extinguisher at the same time the compact compressor is switched on, powered by a portable battery unit. At that the foam generator comprises a dispenser, a foam nozzle and a two-phase flow divider, the dispenser is connected to the housing of the foam nozzle made in the form of a cylindrical shell, at that mounted coaxially and axially relative to the dispenser and on the foam nozzle housing, at a part located closer to the dispenser, at least three windows for ejecting air are made, and at the output a two-phase flow divider is secured, made in the form of a circular grid, and the dispenser housing is made with a channel for supplying the liquid and has a coaxial sleeve rigidly connected with the housing with a nozzle fixed at its lower part, at that made in the form of a two-step cylindrical sleeve, which upper cylindrical stage is connected by a threaded connection to the central core mounted with an annular gap towards the inner surface of the cylindrical sleeve and which consists of a cylindrical part with a swirler fixed coaxially at its lower part, made in the form of a cylinder with a central orifice. At that on the outer surface of which at least double-lead screw thread is made.

EFFECT: increased efficiency of fire extinguishing of different classes by using high-expansion air filled foam.

 

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.

Installation for mobile fire (figure 1) contains a 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 12V DC.

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 the trigger-locking device 2 manual type, and system 3 supply of liquids and pipeline 8.

Generator (figure 2) includes the atomizer, which is connected to the housing 14 ejecting nozzles, made in the form of a cone mounted asymmetrically relative to the sprayer. On the housing 14 ejecting nozzles, in part located closer to the spray made at least three window 13 for ejection of air, and the output is fixed divider 15 two-phase flow, made in the form of a circle from a mesh or perforated material.

The dispenser comprises a cylindrical hollow body 1 with 3 channel for supplying a fluid and coaxially rigidly connected with the housing sleeve 2 is fixed in the lower part of the nozzle, made in the form of two-stage cylindrical sleeve 4, the upper cylindrical stage 6 which are connected by threaded connection with the Central core, established the annular gap 9 on the inner surface of the cylindrical sleeve 4, and consisting of a cylindrical part 7 is fixed coaxially with the lower part of swirler 10, made in the form of a cylinder with a Central orifice hole 11, on the outer surface of which is made of at least two-lead screw-thread 12. Screw cutting can be performed on the inner surface of the Central throttle openings 11, with the possible options left as is, and right spiral surfaces on the cylinder 10 and the throttle opening 11.

The annular gap 9 is connected, at least three radial channels 5, made in a two-stage sleeve 4, connecting it with the ring cavity 8 formed by the inner surface of the sleeve 2 and the outer surface of the upper cylindrical stage 6, and the annular chamber 8 is connected to channel 3 of the housing 1 for supplying a fluid.

The generator works as follows.

When the fire pump unit (not shown) delivers the foam solution from the tank-dozer or a fire engine in the inlet pipe foam generator connected to the cavity of the housing of the dispenser and then goes in two directions: first, in the annular cavity 8 through the radial channels 5 in the annular gap 9 between the nozzle and the Central core.

The operation of the dispenser is as follows.

Fluid under pressure is supplied into the cavity of the housing 1 and then goes in two directions: first, in the annular cavity 8 through the radial channels 5 in the annular gap 9 between the nozzle and the Central core. When the pressure at the input of more than 0.2 MPa, the liquid accelerates the outer cylindrical surface of the core with the formation of the liquid film, which is not detached from its outer surface. R is Shon liquid in the lower part of this surface is accompanied by a decrease in her static pressure and vaporization and release of soluble gases. This phenomenon is additionally prepares the liquid to fragment into small drops. When reaching the liquid flow counter-swirling flow flowing from the swirler 10, multiple fragmentation of film formation of fine-dispersed phase.

The second direction, which supplies the fluid through the channel 3 for the supply of the liquid, then into the cavity of the Central core, and then swirl 10, located in the lower part of the cylindrical part 7 of the core from which the fluid expires vortex swirling flow with multiple crushing trickling streams of liquid flowing from the swirler 10 and the annular gap 9.

The presence of gas inclusions in the liquid additionally resent its surface, which leads to volnoobrazovaniye and volumetric crushing of the liquid film. Loss of mechanical energy when external clocking (external conical surface) decrease compared with the same acceleration in a closed channel.

When the pressure at the input of more than 0.2 MPa, the liquid accelerates the outer cylindrical surface of the core with the formation of the liquid film, which is not detached from its outer surface. The acceleration of the liquid in the lower part of this surface is accompanied by a decrease in her static pressure and vaporization and you is a bookmark soluble gases. This phenomenon is additionally prepares the liquid to fragment into small drops. When reaching the liquid flow counter currents flowing from the cylindrical throttle openings 10, multiple fragmentation of film formation of fine-dispersed phase.

The second direction, which supplies the fluid through the channel 3 for supplying a fluid into the cavity of the Central core, and then in the lower part of the cylindrical part 7 of the core, from which part of the liquid will expire through radial holes 10, with multiple crushing trickling streams of liquid flowing from the throttle hole. The presence of gas inclusions in the liquid additionally resent its surface, which leads to volnoobrazovaniye and volumetric crushing of the liquid film. Loss of mechanical energy when external clocking (external conical surface) decrease compared with the same acceleration in a closed channel.

After spray 1 stream is fed to the inlet of the diffuser 14, through the window 13 which is the ejection of air to form foam, which is sent to the divider 15 two-phase flow. At the beginning of the torch spray foam solution has the greatest speed and due to the ejection of air is formed foam with bubbles as small size (23 mm in Poperechny the e), and with larger bubbles (412 mm in diameter). Thus, the generator produces polydisperse (different sized bubbles) foam, which has the property of quickly spreading over the surface.

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) foam, under pressure generated by the foam generator, 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 foam 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 PE is OBRAZOVATEL. 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.

Installing mobile-containing fire fighting portable extinguishing agent representing the extinguisher injection type, filled with non-flammable liquid with a trigger-locking device manual type and the system fluid with foam generator, 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 portable battery unit, wherein the generator includes a nozzle, foam nozzle and a divider of two-phase flow, and a nozzle connected to the housing foam tips made in the form of cylindrical shells mounted coaxially and asymmetrically relative to the atomizer, and in the case of the foam nozzle, in part located closer to the spray made at least three Windows for ejection without the ha, and the output is fixed divider of two-phase flow, made in the form of a circular grid, and the nozzle body is made with a channel for supplying a fluid and is coaxially rigidly connected with the housing, a sleeve mounted in the lower part of the nozzle, made in the form of two-stage cylindrical sleeve, the upper cylindrical stage which are connected by threaded connection with the Central core is installed with an annular gap relative to the inner surface of the cylindrical sleeve and consisting of a cylindrical part with a fixed coaxially in the bottom of the swirl, made in the form of a cylinder with a Central throttle opening on the outer surface of which is made at least, dubsahara screw-thread.



 

Same patents:

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to portable fire extinguishing units. The portable fire extinguisher comprises a portable fire extinguishing unit which is a stored-pressure extinguisher. The fire extinguisher is filled with non-flammable liquid, with a hand operated lock-start gear and a system of liquid supply with the foam generator. Additionally it comprises a gas supply system which comprises a microswitch. The microswitch is mounted on the lock-start gear so that when starting the fire extinguisher the compact compressor is switched on simultaneously. The compressor is powered by a portable battery pack.

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FIELD: fire-fighting means.

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FIELD: chemical industry; the portable devices for the fire extinguishing.

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Fire extinguisher // 2291729

FIELD: fire-fighting equipment, particularly portable extinguishers which are permanently pressurized or pressurized immediately before use.

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EFFECT: increased fire-extinguishing efficiency.

4 cl, 1 dwg

FIELD: fire-fighting, particularly fire-extinguishing means using fire-extinguisher generated as two-phase gas-and-droplet flow.

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7 cl, 2 dwg

FIELD: storing or distributing liquids or gases.

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EFFECT: simplified structure and reduced labor consumption for assembling.

9 cl, 8 dwg, 2 ex

FIELD: manufacturing high-pressure vessels.

SUBSTANCE: method comprises screwing the valving members in the neck with an arbitrary tightening torque with the use of a lubricant that is applied on the threaded section of the valving member from the side of its face within the section between the first and fifth turn of the thread along the 1±0.5 of the turn length over its periphery. The lubricant is made of a one-component anaerobic glue in amount corresponding to the volume of the spiral space between the turns of the neck thread and answering turns of the threaded section of the valving device over the length no less than one turn of the thread. The assembled vessel is then allowed to stand for forming a polymeric composition in the spiral space for at least 20 min at a temperature of no less than 5°C. The threaded connection is sealed by means of a polymeric composition.

EFFECT: enhanced reliability.

1 cl, 5 dwg

Fire-extinguisher // 2311936

FIELD: fire-fighting equipment, particularly fire-extinguishers, for instance powder fire-extinguishers.

SUBSTANCE: fire-extinguisher comprises cylindrical body with head and bottom, shutoff-and-triggering device with spraying head and siphon pipe for powder distribution from cylindrical body into spraying head through shutoff-and-triggering device. Cylindrical body has mouth head including support flange secured inside cylindrical body and connected to mouth thereof by spot weld seam. The bush has cylindrical central pipe mating support flange thereof. Central pipe includes inner thread for shutoff-and-triggering device connection to cylindrical body. Sealing gasket made of elastic material is clamped between shutoff-and-triggering device and body mouth. Bottom is air-tightly secured to cylindrical body by means of welding.

EFFECT: increased body reliability, decreased labor inputs for fire-extinguisher body manufacturing and reduced body manufacturing accuracy requirement.

1 dwg

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

FIELD: mechanics.

SUBSTANCE: lock and release mechanism for extinguisher includes head attached to a container. The head is provided with inlet and outlet channels for fire extinguishing agent supply. Bushing with flange from one side and circular bead from the other side is threaded into the housing. Rod is spring-loaded with regard to head and installed into bushing hole to enable interaction of locking element with circular bead acting as valve seat. Pivoted steering lever and handle for transportation with fastening base are located inside head at an angle to head axis. To fix handle under bushing flange, handle base is provided with tie-down slot covering bushing under flange and pressing handle base to head. Pivoted lever with threaded hole is attached to rod via pusher being in the shape of screw with retainer nut. Head material is profiled iron of aluminium alloy. It is processed by pressing and drawing method. Bushing material is brass.

EFFECT: improvement of operational reliability and reduction of mechanism repair cost and price.

4 cl, 4 dwg

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