Foam generating apparatus for extinguishing fires through wells
(57) Abstract:Application: for fire fighting in remote places mines in mining and other industries. The inventive foam generating apparatus for extinguishing fires through bore includes a housing in the form of a pipe with nozzles components, retractable piping with supports and spray heads located inside the casing, foam generating net, a distributing reservoir of liquid phase components are made integral with the front pillar, and a flexible pipes of different lengths. The Central flexible tube connected to the manifold along the longitudinal axis of the retractable pipe, and the other at an angle thereto. At the ends of the flexible pipes placed nozzles with fan-shaped directional nozzles. 1 C. p. F.-ly, 4 Il. The invention relates to the mining industry and can be used when extinguishing fires in hard to reach areas of the mines.Known foam generating apparatus for extinguishing fire for debris, comprising a cylindrical casing, a spray, foam generating net, folding spray chamber and components of the mixture inlet pipe (ed. mon. USSR N 702181, CL E21 F 5/02, 1977).Yves, retractable inproved with supports and spray heads located inside the tube, and folding diffuser with spring elements (ed. mon. USSR N 680743, class. AND S/04).A disadvantage of the known devices in low productivity generating foam for filling of large volumes of mining, which reduces the reliability of the rapid suppression or location of the fire.The purpose of the invention increase the efficiency of extinguishing underground fires in hard to reach places mines by increasing the performance of the device for generating foam.This is achieved by the device, comprising a housing in the form of a pipe with nozzles of mixture components, retractable piping with supports and spray heads located inside the casing, folding diffuser with spring elements and the foam generating net, retractable front support pipe made integral with the transfer manifold components of the liquid phase (solution of the foaming agent, phlegmatizers or extinguishing agent) attached at an angle to the longitudinal axis of the flexible pipes of different lengths, terminating in nozzles and connected to a common pull-out pipe, and actiona foam generating net. Additional redistribution of the gas stream in the mixing chamber is provided a foldable swirl gas flow, which is fixed to the axial port, located in the Central part of the mixing chamber.The proposed set of distinctive features allows you to create a compact device that provides increased performance when generating foam several times due to a significant increase in the square foam generating mesh placement of nozzles in the mixing chamber, the redistribution of the gas flow, etc.In Fig. 1 shows the deep shell, General view; Fig. 2 handout manifold (front bearing) with branch pipes and nozzles; Fig. 3 is a view in section of the air distributor; Fig. 4 deep projectile in the completion of excavation inert foam.Foam generating the projectile contains a retractable pipe 1 pipe 2 and 3, the supports 4 and placed in the casing tube 5 wells drilled in the emergency area of excavation. The front bearing is made at the same time (contains) from the transfer manifold 6 is connected a flexible pipe 7, terminating in nozzles 8 with side add is, and on the Central pipe 7 is installed folding swirl 11. On the distributing manifold (front leg) fixed elastic closed foam generating net 12, forming the mixing chamber 13, the components of the mixture in the mode of generating foam.Foam generating projectile (deep generator) works as follows.In case of fire in the mine workings in the conditions of the possibility of explosion of methane for security work in isolation or suppression (localization) of the fire with a contiguous formation (generation) or with surface drilling a well with casing pipe 5, install retractable pipe 1 with the supports 4, pre-folded swirl 11 (which has a spring tape) and flexible pipes 7 by preload to the Central pipe. At the same time to the manifold 6 (front support) fixed foam generating elastic mesh 12 with its styling along with the pipes 7 in legarrea packaging (not shown). Then the pipeline Assembly is pushed through the casing pipe 5 to the exit in the emergency area of excavation (length is determined during the drilling of wells, at the outlet of the casing is limiting).For disclosure progenerators gas (other fire extinguishing and phlegmatizers compositions), the nozzles 8 and the pipeline 1 is the liquid phase, and spritz the pipe 5 through valves 10 and 11 gas swirl flow. The liquid phase wets the transport packaging and torn by the pressure of the compressed gas, while relieving the folded flexible pipes 7 and swirl 11, which are disclosed in the operating position with the simultaneous disclosure of foam generating grid 12 with the formation of the chamber 13 of the mixing of the components of the mixture to obtain an inert foam. The resulting foam under pressure is pushed through the mesh 12 with obtaining more resistant fine patterns. Improving performance foam generating projectile due to the fact that the gas stream passing through the valve 10, in front of the camera 13 is redistributed flows in the direction of which hits the swirl 11 with additional redistribution and mixing with the liquid phase, which is distributed in the mixing chamber through the nozzle 9 of the nozzles 8.Foam generating the shell allows you to perform the change taking fire by feeding on retractable piping other fire extinguishing means, for enhancing the production efficiency of rescue work.
< feed components, retractable piping with supports and spray heads located inside the casing and foam generating the grid, characterized in that it is equipped with a distributing manifold liquid phase components, made in one with the front pillar, and a flexible pipes of different lengths, the Central of which is connected to the collector along the longitudinal axis of the retractable pipe, and the other at an angle thereto at the ends of the flexible pipes placed nozzles with fan-shaped directional nozzles.2. The projectile p. 1, characterized in that the foam generating net attached to the front leg with the possibility of formation of a closed mixing chamber of the mixture components.
FIELD: fire-fighting equipment, particularly foam generators to generate high-expansion foam used for extinguishing fires in oil-transfer stations and other rooms with the use of automatic fire-extinguishing systems.
SUBSTANCE: generator comprises hollow body made as straight cylinder with opened ends, nozzles for supplying aqueous foaming solution into body arranged at one end of the body and uniformly distributed across generator cross-section. Nozzle or nozzles located in central part of generator cross-section is put forward relative peripheral ones. Generator comprises outer, inner and additional nets each defining axially symmetrical truncated cone. Inner net is arranged in outer one. Base of outer net is connected to another body end, apex thereof faces object to be protected. Base of inner net is connected to truncated apex of outer net and truncated apex thereof faces body. Base of additional net is connected to truncated apex of inner net and truncated apex faces object to be protected. Cone angle of each net is equal to half of spray angle of jet exiting from nozzle. Ratio between summary area of effective net cells cross-sections and body cross-section area is 3.5 - 4.
EFFECT: increased efficiency.
4 cl, 1 dwg
FIELD: fire-fighting, particularly for producing fire-extinguishing powder adapted for extinguishing different combustible materials.
SUBSTANCE: method involves mixing potassium chloride with carbon white and alkali metal carbonate taken in amount of 1.55-1.65 % by weight; mixing thereof and treating with liquid alcylhalosilane taken in amount of 1.46-1.55 by weight up to simultaneous neutralizing of liberated hydrochloric acid which is resulted in coating potassium chloride and carbon white particles with organosilicon film with oriented carbonic radicals arrangement so that film thickness does not exceed that of monomolecular layer; heat treating the obtained hydrophobizated powder under 80-150° temperature within 2.5-4.5 hours and cooling thereof up to normal temperature.
EFFECT: prevention of filter and vacuum pump components corrosion.
3 cl, 1 dwg, 5 tbl
FIELD: fire-fighting, particularly for making aqueous fire-extinguishing foam of determined concentration immediately before supplying thereof to fire-extinguishing system installed inside tank with oil or oil products, in oil-pumping station rooms, in airplane sheds and so on.
SUBSTANCE: device has tank for foaming agent with membrane arranged inside the tank and used to separate foaming agent from water supplied to tank during fire-extinguishing. Device also has mixing means made as a vessel with inlet orifice for water, outlet orifice for aqueous solution discharge and having water proportioner installed inside the vessel. Device comprises water line to supply water to tank connected to mixing means upstream of water proportioner and foaming agent line to move foaming agent displaced with water and connected to mixing means downstream of the water proportioner. Foaming agent line has gauging diaphragm for foaming agent. Gauging diaphragm orifice has diameter df defined as df=(0.18-0.2)dw, where dw is water proportioner diameter to obtain 3% foaming agent concentration in water, and as df=(0.31-0.33)dw to obtain 6% foaming agent concentration in water.
EFFECT: extended range of aqueous foam flow rate change.
FIELD: fire-fighting, particularly to extinguish fires involving solid combustible substances and materials.
SUBSTANCE: method involves supplying fire-extinguishing composition to fire site, wherein fire-extinguishing composition is formed by mixing two solutions at burning material surface. One solution is aqueous solution of alkali silicate, another one is gelatinization coagulant and catalyst, for instance aqueous solution of bivalent or polyvalent metal salt. Gelatinization solution is made as aqueous solution of alkali silicate, for instance sodium water glass silicate or potassium water glass silicate including silicate in amount of 3.5-25.0% and silica modulus of 1.0-3.6. Gelatinization coagulant and catalyst solution is taken as aqueous solution of bivalent or polyvalent metal salt, for instance aluminum, iron (+3); titanium (+3 or +4), magnesium (+2), calcium (+2), with weight salt content of 4.5-47.9%. The obtained solutions are delivered to fire site as dispersed jets and are directed in the same point of burning material surface. When fire-extinguishing composition falls on surface to be protected or on burning surface reaction occurs between components of above solutions. The reaction continues for 1 sec. and results in solid gel layer forming. The gel layer may be stick to vertical and inclined surfaces, including ceilings.
EFFECT: reduced consumption of fire-extinguishing substance, reduced damage caused by fire-extinguishing, prevention of lower building story flooding.
FIELD: aerosol production from fine-sprayed water and carbon dioxide useful in fire quenching.
SUBSTANCE: claimed method includes acceleration of aqueous solution flow and its turbulence enhancement due to spinning in centrifugal atomizer. Method is characterized that carbon dioxide at least 2-3 g/l and surfactant in concentration of 3-5 g/l are preliminary dissolved in water, and flow is accelerated due to nitrogen pressure difference in vessel being equal at least 10 MPa. Apparatus for production of fine-sprayed water and carbon dioxide aerosol also is disclosed. According to invention bayonet-priming device with manometer is arranged on vessel for storage of carbon dioxide and surfactant aqueous solution under pressure for feeding of carbon dioxide and surfactant aqueous solution. Centrifugal atomizers with nozzles of not more 0.5 mm in diameter and amplifiers with double-threaded spiral channels are arranged on spherical cap of atomizer, wherein nozzle sum square is less than square of siphon pipe opening.
EFFECT: fine-sprayed water and carbon dioxide aerosol with desired least drop sizes and increased fire-quenching effectiveness.
2 cl, 2 dwg