JP2002325858A - Fire fighting method for building and building with fire extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widely achieve to shorten knock down time of a fire part of a building, to cut down a volume of water used for fire fighting, and to reduce a secondary disaster by fire fighting water discharged to an object other than suffered objects. SOLUTION: A fire fighting equipment unit with a supplier of fire extinguishing chemicals powder coated by a waterproof film of silicone resin, etc., and a pressurized water pipe line for fire fighting is equipped on a building such as a house, apartment house, building, mill, tunnel, warehouse, etc. The fire extinguishing chemicals powder is added and mixed in the pressurized water pipe line for fire fighting while the mixed water is discharged through the tip end nozzle via a fire fighting hose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing method for a building having a high fire extinguishing efficiency and a building provided with a fire extinguishing equipment unit, and more particularly to an effective fire extinguishing water by adding and mixing a powder fire extinguishing agent. The present invention relates to a fire extinguishing method for buildings and a building provided with a fire extinguishing equipment unit.

[0002]

2. Description of the Related Art Conventionally, in a general house or a building fire (so-called fire A), a fire extinguishing method by water discharge is usually used. In this case, a large amount of water is required and fire extinguishing takes time. There is a problem that the fired area such as a firefighter or the like is exposed to a dangerous state for a long time due to an increase in burned area. In addition, in order to completely extinguish the fire and prevent relapse, it is necessary to discharge a large amount of water, causing a large amount of water damage and secondary disasters other than those affected by the disaster, and multiple fire sites are separated. In this case, there is a problem that the fire water is insufficient.

Further, powder fire extinguishing agents and foam extinguishing agents are generally used for oil fires (so-called B fires) at dangerous goods factories, berths and the like. It is known that powder fire extinguishing chemicals have a re-flammability suppressing effect. When powder extinguishing chemicals radiate to combustible materials, especially wood of buildings that are targets of general fire, they enter the wood and become a glassy film due to heat. Since the surface is covered, a flame is prevented and an effect of suppressing reburn is produced. It is known that foam extinguishing equipment extinguishes fire by the cooling effect of an aqueous solution and the suffocation effect of foam, but it requires a large amount of water and takes a long time to suppress the flame.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been developed in view of the above circumstances, and has a fire extinguishing method and a fire extinguishing equipment unit installed in a building capable of realizing safe and rapid fire suppression. The purpose is to provide things.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a powder fire extinguishing agent or a powder extinguishing agent and a surfactant are added to a fire extinguishing water in a fire extinguishing pumping line. Alternatively, by adding and mixing a powder fire extinguishing agent and a foam fire extinguishing agent, an epoch-making fire extinguishing ability can be exhibited.

That is, the present invention is a building having a fire extinguishing method and a fire extinguishing equipment unit having the following structure. (1) A fire extinguishing equipment unit having a powder fire extinguishing agent supply device and a fire extinguishing water supply pipe is provided in a building such as a house, an apartment, a building, a factory, a tunnel, and a warehouse. A fire extinguishing method for a building, comprising discharging the mixed water from a radiant nozzle through a fire hose while adding and mixing a chemical. (2) The fire extinguishing method for a building according to the above (1), wherein the fire extinguishing equipment unit further includes a supply device for a stock solution or an aqueous solution of a surfactant. (3) The fire extinguishing method for a building according to the above (1) or (2), wherein 5 to 30 parts by weight of a powder fire extinguishing agent is added to and mixed with 100 parts by weight of the pumped water. (4) The fire extinguishing method for a building according to any one of the above (1) to (3), wherein the powder fire extinguishing agent is obtained by coating each powder particle with a waterproof coating. (5) The powder fire extinguishing agent according to the above item (4), wherein the surface of each particle of the ammonium phosphate extinguishing agent powder or the potassium hydrogen carbonate fire extinguishing agent is coated with a silicone resin. The fire extinguishing method for the described building. (6) The building according to any one of (1) and (3) to (5), wherein the fire extinguishing equipment unit further includes a supply device for the fire extinguishing foam concentrate or an aqueous solution thereof. Fire extinguishing method.

(7) A part of the fire extinguishing water pressure transmission line set in the fire extinguishing equipment unit is a Venturi pipe, and a powder fire extinguishing agent supply port is provided in the pipe section. 6) The method for extinguishing a building according to any one of the above 6). (8) A part of the fire-extinguishing water pressure transmission line set in the fire-extinguishing equipment unit is a Venturi tube, and a powder fire extinguishing agent supply port and a fire extinguishing foam concentrate supply port are provided in the pipe section. The fire extinguishing method for a building according to any one of 1) to (6). (9) A part of the fire-extinguishing water pressure transmission line set in the fire-extinguishing equipment unit is a Venturi pipe, and a powder fire extinguishing agent supply port and a surfactant stock solution supply port are provided in the pipe section. (1) The method for extinguishing a building according to any one of (1) to (6). (10) The radiation nozzle is provided with a ridge arranged on the inner wall of the pipe so as to be inclined with respect to the traveling direction, and the fire extinguishing water, the powder fire extinguishing agent, the fire extinguishing foam, etc. are swirled and mixed with each other. (1) to (1) characterized in that the structure is homogenized.
(9) The method for extinguishing a building according to any one of (9). (11) The above-mentioned items (1) to (10), wherein the radiation nozzle has a large number of air suction pores on its tube wall.
The fire extinguishing method for a building according to any one of the above. (12) A fire extinguisher unit equipped with a powder extinguishing agent supply device and a fire extinguishing water pumping line is provided in buildings such as houses, condominiums, buildings, factories, tunnels, and warehouses. The structure according to any one of (1) to (11), wherein the mixed water is discharged from a sprinkler head of a sprinkler facility arranged in the building while adding and mixing the chemical. Fire extinguishing method.

(13) In a building such as a house, an apartment, a building, a factory, a tunnel, a warehouse, etc., a fire extinguishing equipment unit including a powder fire extinguishing agent supply device and a fire extinguishing water pressure pipe is installed, and the fire extinguishing water pressure pipe is installed. A means for adding and mixing the powder fire extinguishing agent, a fire hose for pumping the mixed water obtained by the means for adding and mixing, and a radiation nozzle ahead of the fire extinguishing agent are installed in the passage, and the fire extinguishing water pressure transmission line is installed in the pipe. A building provided with a fire extinguisher unit, wherein the mixed water is discharged from a radiant nozzle through a fire hose while adding and mixing the powder fire extinguishing agent. (14) In a building such as a house, an apartment, a building, a factory, a tunnel, a warehouse, etc., a fire extinguishing equipment unit having a powder fire extinguishing agent supply device and a fire extinguishing water pumping line is provided, and the fire extinguishing water pumping line is provided with the powder. A means for adding and mixing a fire extinguishing agent, a fire hose for pumping mixed water obtained by the means for adding and mixing the fire extinguishing agent, and a radiation nozzle ahead of the hose are installed. Add
A building provided with a fire extinguisher unit, wherein the mixed water is discharged from a sprinkler head of a sprinkler facility arranged in the building while mixing. (15) The building provided with the fire extinguishing equipment unit according to the above (13) or (14), wherein the fire extinguishing equipment unit further includes a supply device for a stock solution or an aqueous solution of a surfactant. (16) The method according to any one of the above items (13) to (15), further comprising means for adding and mixing 5 to 30 parts by weight of the powder fire extinguishing agent with respect to 100 parts by weight of the water for pressure feeding. A building equipped with the fire extinguishing equipment unit described. (17) The fire extinguishing equipment unit for a building according to any one of the above (13) to (16), wherein the powder fire extinguishing agent is one in which each powder particle is coated with a waterproof coating. The building where was installed.

(18) The powder fire extinguishing agent is characterized in that the surface of each particle of the ammonium phosphate based fire extinguishing agent powder or the potassium hydrogen carbonate fire extinguishing agent powder is coated with a silicone resin. 13)-(16)
A building in which the fire extinguishing equipment unit according to any one of the above is installed. (19) The fire extinguishing equipment unit according to the above (13), wherein the fire extinguishing equipment unit further comprises a supply device for the fire extinguishing foam concentrate.
(14) A building in which the fire extinguishing equipment unit according to any one of (16) to (18) is installed. (20) The foregoing paragraphs (13) to (13) to (13) to (13) to (13) to (13), in which a part of the fire-extinguishing hydraulic pressure transmission line set in the fire-extinguishing equipment unit is a Venturi pipe, and a powder fire-extinguishing agent supply port is provided in the pipe.
(19) A building in which the fire extinguisher unit according to any one of (19) is installed. (21) A part of the fire-extinguishing water pressure transmission line set in the fire-extinguishing equipment unit is a Venturi pipe, and a powder fire-extinguishing agent supply port and a fire-extinguishing foam concentrate supply port are provided in the pipe section. 13) A building in which the fire extinguishing equipment unit according to any one of the above items 19 to 19 is installed. (22) The preceding paragraph, characterized in that a part of the fire-extinguishing water pressure transmission line set in the fire-extinguishing equipment unit is a Venturi tube, and a powder fire-extinguishing agent supply port and a surfactant stock solution supply port are provided in the pipe section. 13) A building in which the fire extinguishing equipment unit according to any one of the above items 19 to 19 is installed. (23) The radiating nozzle is provided with a ridge arranged on the inner wall of the pipe so as to be inclined in the traveling direction, and the water for fire extinguishing, the powder for fire extinguishing, the foam for fire extinguishing, etc. are swirled and mixed with each other for homogenization. A building provided with the fire extinguishing equipment unit according to any one of (13) and (15) to (22), wherein the building has a structure to be performed.

(24) Any one of the above items (13), (15) to (23), wherein the radiation nozzle has a large number of fine holes for air suction on its tube wall. A building in which the fire extinguishing equipment unit described in the item is installed. (25) A building provided with the fire extinguishing equipment unit according to any one of the above (13) to (24), wherein the fire extinguishing equipment unit is installed on each floor of the building.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of an example of a building in which a fire extinguishing equipment unit according to the present invention is installed. In the figure, fire water (3) is sent from a fire hydrant (1) on a public road to a fire engine (4) via a hose (2) and is pressurized by a pump of the fire engine. Thereafter, the pressurized fire water is passed through a fire hose (5) and a connection water outlet (6) attached to the building connected to the fire hose (5), and then to a basement or the like in the building. It flows to the installed fire extinguishing equipment unit according to the present invention. Then, from the surfactant container (7) and the powder fire extinguishing agent container (9) provided in the fire extinguishing equipment unit, respectively, a surfactant stock solution and a powder fire extinguishing agent are mixed into a surfactant mixer (8) having a Venturi tube portion.
And a powdered fire extinguishing agent mixer (10), which is added and mixed at a constant rate into the pumping water in the water pumping line for fire extinguishing, and the mixed solution (15) is supplied to the main pipe of the water supply pipe provided in the building. (1
The water is discharged from the water outlet (13) of each floor through the fire extinguishing hose (5 ') and the radiation nozzle (14) through 1) and the branch pipe (12), and is discharged to the fire part during the spread of fire. The basic technical idea of the present invention is to add and mix a powder fire extinguishing agent into pumped water, apply a fire extinguishing action by water and a fire extinguishing action by powder fire extinguishing agent at the same time, and simultaneously apply water (pumped water) to powder extinguishing agent. It is intended to enhance fire-extinguishing efficiency by using it as a transport medium,
It is desirable that the powder fire extinguishing agent content be 5 to 25% by weight with respect to the water volume of 500 to 200 L / min. When the fire engine (4) has a function of sending a surfactant aqueous solution, a powder fire extinguishing agent container (8) is used without using the surfactant container (7) and the surfactant mixer (8). Use only 9) and the powder extinguishing agent mixer (10).

Also, as shown in FIG. 2, the water supply pipe main pipe (11)
Water supply pipe branch pipes (1
2) There is a method of installing a fire extinguishing equipment unit. Although the above-described apparatus is installed in a building, it is also possible to install and use the above-mentioned equipment unit outdoors near a building.

[0013] The fire extinguishing powder used in the present invention includes:
Although a well-known one can be used, a powder fire extinguishing agent containing ammonium monophosphate, potassium hydrogen carbonate or the like as a main component is used as a particularly preferable one. As an example, Table 1 shows the composition of what is called a so-called ABC powder fire extinguishing agent mainly composed of ammonium monophosphate (NH4H2PO4). That is, ammonium monophosphate 45 to 9
0%, 45% or less of ammonium sulfate, a slight amount of an anti-caking agent and a water repellent as other components, and an extremely small amount of a coloring agent. The specific gravity of the powder is about 1.8.

[0014]

[Table 1]

In particular, the powder fire extinguishing agent in the present invention is preferably a powder whose surface is coated with a waterproof coating, particularly a silicone resin. Further, a powdery composite obtained by crushing a lump obtained by curing a mixture of a powder fire extinguishing agent and a waterproof material, for example, paraffin, silicone resin, or the like, or a mixture of a powder extinguishing agent and a silicone resin prepolymer. Can also be used. When such a mixture of powder and water is radiated into contact with a flame, the "Chain Reaction" element of the four elements of combustion is sufficiently suppressed or prevented (negative catalysis). Can be. In addition, because of its excellent moisture resistance, addition and mixing to pressurized water by a mixer can be smoothly performed without moisture absorption and solidification in a powder fire extinguishing agent container. The powder subjected to the coating treatment does not settle even when immersed in water for a long time, and is excellent in moisture resistance and water resistance.

Further, in the present invention, in addition to the powder fire extinguishing agent, a surfactant aqueous solution is added and mixed as an infiltrant and the mixture is radiated to the fire extinguishing object, thereby increasing the degree of penetration into the object and extinguishing the fire extinguishing ability. Can be raised.

As a method of adding and mixing in addition to the powder fire extinguishing agent, there is a method of mixing a foam extinguishing agent instead of the aqueous surfactant solution. Foam fire extinguishing agents include protein foam extinguishing agents (3% type, 6% type), protein foam extinguishing agents (fluorinated) (3% type, 6% type), and water film foam extinguishing agents (3% type) ,
6% type) can be used. Tables 2 and 3 show composition examples of the protein foam extinguishing agent, the protein foam extinguishing agent (fluorinated), and the water film foam extinguishing agent.

[0018]

[Table 2]

[0019]

[Table 3]

The liquid mixture of the powdered fire extinguishing agent and the aqueous surfactant solution exhibits a cooling effect, a suffocation effect, a negative catalytic effect, and can suppress combustion in a short time. By using a mixed liquid having a powder extinguishing agent content of 5% to 25%, a fire extinguishing effect of about 5 to 8 times is exhibited as compared with the conventional fire extinguishing using simply water. In addition, when a surfactant aqueous solution is added to a mixture of fire-fighting water and a powder fire extinguishing agent, the infiltration of the mixture increases and the mixture can penetrate deeply into the fire extinguishing target, so that the fire extinguishing ability is further improved. .

Further, the surfactant container (7) is replaced with a foam fire extinguishing agent container, and the radiation nozzle (14) is further replaced with a nozzle (FIG. 7) having an air suction port for foaming, as described below. A method is also possible in which a drug and a foam powder drug are added and mixed, and the mixture is emitted in a foamed state. The fire targets to which the fire extinguishing method of the present invention is suitable include ordinary houses, condominiums,
In addition to fires in office buildings, factories, warehouses, parking lots, tunnels, aircraft hangars, hazardous materials factories, storages, etc., there are also fires such as oil pipe blasts with pressure. As mentioned above, by mixing the powder with the foam,
A higher fire extinguishing effect can be obtained as compared with a conventional fire extinguishing method using a protein foam.

At a fire site, a dilution volume concentration of 3
% Or 6% of a water film-forming foam fire extinguishing agent aqueous solution, the second type powder (powder mainly composed of ammonium monophosphate) instead of the third type powder Powder using potassium bicarbonate as the main component)
A fire extinguishing effect about four times as high as that of a conventional fire extinguishing method using a water film foaming chemical can be expected.

FIG. 3 is a plan view (a) and a front view (b) of an apparatus for adding and mixing a powder fire extinguishing agent into fire fighting water. The powder extinguishing agent in the powder extinguishing agent container (9) is supplied from a gas inlet of the powder agitating gas cylinder (16) to a pipe having a large number of pores in a pipe wall extending around the bottom of the powder extinguishing agent container (9). The powder digester deposited by jetting of pressurized nitrogen gas or the like flowing in 17) is stirred and fluidized. As the pressurized fire fighting water (3) flows through the fire fighting water pressure feed line (50), the powder fire extinguishing agent is transferred from the powder fire extinguishing agent container (9) to the powder fire extinguishing agent mixer (10) having a Venturi tube section. It is sucked and added, and is proportionally mixed with the fire fighting water (3). The mixture (15) is further discharged from the radiating nozzle (14) through the fire hose (5 ').

FIG. 4 is a plan view (a) and a front view (b) of an apparatus in which a surfactant container (7) and a surfactant mixer (8) are added to the apparatus of FIG. The undiluted surfactant solution in the surfactant container (7) is added and mixed in a fixed ratio to the fire-fighting water (3), and then mixed with the powder fire extinguishing agent in the same manner as in FIG. It is emitted from the radiation nozzle (14).

The fire extinguisher equipment unit shown in FIG. 5 is provided in a fire box for fire brigade or a fire hydrant box (24) inside a building.
It contains a powder fire extinguishing agent container (9), a fire extinguishing water pressure feeding line (50), and a mixer (10). Furthermore, a long fire hose (5 '), a radiation nozzle (14), a fire squad plug or fire hydrant valve (19), a hose connection port (20), and the like are provided. (23) is a door.

The fire extinguisher equipment unit shown in FIG. 6 is installed in a firebox storage box or fire hydrant storage box (24) dedicated to a fire brigade inside a building.
It contains a surfactant container (7), a powder extinguishing agent container (9), a surfactant mixer (8), a powder extinguishing agent mixer (10), and the like, as well as those shown in FIG. A similar indicator light, a long fire hose (5 ') and the like are provided.

FIG. 7 is a front view of some radiating nozzles used in the present invention. (A) is a radiation nozzle for radiating a mixed water obtained by adding and mixing a powder fire extinguishing agent or a powdered fire extinguishing agent and a surfactant aqueous solution to fire fighting water supply.
A radiation nozzle for adding and mixing a powder fire extinguishing agent or a powdered fire extinguishing agent and a surfactant aqueous solution before the fire-fighting pressure water flows into the radiation nozzle (14), and radiating the resultant through a fire hose. (B) is a radiation nozzle (14)
Only the fire pumping water is allowed to flow into the fire hose or the like until the fire pumping water flows into a), and the powder fire extinguishing agent container (9) or the powder fire extinguishing agent container (9) is provided near the base of the radiation nozzle (14a). ) And a surfactant container (7) to put a powder extinguishing agent or a powder extinguishing agent and an aqueous surfactant solution into a thin tube (21)
Through a Venturi tube formed at the base of the nozzle through the nozzle, the mixture is added, and the mixed solution is discharged from the radiation nozzle (1).
4a). In the inner wall surface of the tip of the radiation nozzle in (a) and (b), a ridge (18) is provided which is inclined (spirally) with respect to the traveling direction, so that the mixed liquid is well stirred. I am trying to. (C) is a stage before the fire-fighting water supply flows into the radiation nozzle (14b),
A radiation nozzle for radiating a mixture obtained by adding and mixing a powder fire extinguishing agent and a foam aqueous solution, wherein the radiation nozzle (14b)
A plurality of air suction holes (14 ') for generating foam are provided on the tube wall near the base. (D) flows only the fire-fighting pressure water until immediately before flowing into the radiation nozzle (14c), and the powder fire extinguishing agent and the foam concentrate from the powder extinguishing agent container (9) and the foam concentrate container (22) near the base of the radiation nozzle. Is added and mixed by a suction action of a Venturi tube formed at a nozzle base through a thin tube (21), and the mixed liquid is emitted from a radiation nozzle (14c).

FIG. 8 is an explanatory view of an example in which the fire extinguishing equipment unit according to the present invention is attached to a sprinkler equipment arranged in a building. The sprinkler equipment is a sprinkler head (2) installed on the ceiling of a building or the like.
6), running water detection device (automatic alarm valve, etc.) (27), pressurized water supply device (25), water supply piping main pipe (11) and branch pipe (1)
2) etc., but a surfactant container (7) and a surfactant mixer (8) are installed between the pressurized water supply device (25) of the sprinkler equipment and the water supply pipe main pipe (11). Further, a powder extinguishing agent container (9) and a powder extinguishing agent mixer (10) are installed between the running water detecting device (27) and the sprinkler head (26) on each floor. When a fire occurs, the heat-sensitive part of the sprinkler head (26) receives the heat of the fire and melts, and the sealing mechanism of the head is disassembled. Thereafter, the running water detection device (27) is activated, and the pressurized water supply device (25) is activated, whereby the fire fighting water (3)
Is pressurized and flows into the surfactant mixer (8), and a surfactant stock solution is added from the surfactant container (7) at a constant rate through the surfactant mixer (8) having a Venturi tube portion.・ Mixed. Further, the mixed solution flows into the powder extinguishing agent mixer (10) on each floor via the water supply piping main pipe (11) and the water supply piping branch pipe (12), and the powder fire extinguishing agent container (9) extinguishes the powder. The medicine is added and mixed at a constant rate through a powder extinguishing agent mixer (10) having a venturi tube portion, and is discharged from a sprinkler head (26). Conventionally, the amount of water discharged from a sprinkler head is very large, but by applying the present invention, the amount of water discharged can be significantly reduced and the initial fire extinguishing time can be greatly reduced.

[0029]

[Test Example] Next, in order to confirm the effects of the present invention,
The test examples performed will be described based on the drawings and data. [Fire extinguisher]: The fire extinguisher of the fire extinguishing system shown in FIG. 9 was employed. That is, while the pumping water is pumped from the pump 25 ′ to the mixer 10, the powder fire extinguishing agent is simultaneously sucked and supplied from the hopper (powder fire extinguishing agent container) 9 into the water under the same pressure using the Venturi tube in the mixer 10. Mix powder extinguisher with pump water. FIG. 18 shows a longitudinal sectional view of the mixer 10 (Venturi-type powder extinguishing agent mixer) used in this test example. Next, the pressure-feed water mixed with the powder fire extinguishing agent is discharged as a mixed liquid 15 from the radiation nozzle 14 via the fire hose 5 '. In addition, is the first pressure gauge (PG1), is the second pressure gauge (PG2),
Is a third pressure gauge (PG3), is a flow meter, is a ball cock,. Is a gate valve. The powder fire extinguishing agent used in this experiment is a commercially available ABC powder extinguishing agent obtained by coating the surface of ammonium monophosphate having a particle size of about 170 μm with a silicone resin thin film.

A. Fire extinguishing test: A comparative test of the time required for fire extinguishing in the present invention example and the prior art example was performed. That is, based on the provisions of Article 21-2, Paragraph 2 of the Fire Defense Law, the test was performed in accordance with the conditions specified in Article 3 of the Ministerial Ordinance (Measurement of Units of Performance) for Specifying Technical Specifications of Fire Extinguishers. (1) Water (W) for the crimper made of cedar wood for the first fire extinguishing test
(2) A fire extinguishing test was performed on a mixture of water and a powdered fire extinguishing agent (ammonium monophosphate coated with a silicone resin thin film) (WD). The crib for the first fire extinguishing test is shown in an external view in FIG. 17, that is, using 144 pieces of wood (30 mm × 35 mm × 900 mm) made of air-dried cedar, (5 + 6 horizontal) on (5 + 6 horizontal)
Are stacked in a 6-stage stack, and 6 vertical and 6 horizontal units are placed on top of them, and a crib (total surface area ≒ 17 m ² ) (hereinafter referred to as “No. 1 model)) (100). The results are shown in Tables 4, 5 and 10
And FIG.

[0031]

[Table 4]

[0032]

[Table 5]

According to the test data shown in Table 4, water was used as a fire extinguishing agent in a commercially available monobasic ammonium phosphate powder for a powder fire extinguisher (particle size 1 coated with a silicone resin thin film).
A mixture obtained by adding and mixing about 70 μm of primary ammonium phosphate) was used. As shown in Table 4, Table 5, FIG. 10 and FIG. 11, for the knockdown (a state in which the burning flame is rapidly suppressed and no longer rises from the upper end of the crib), a powder fire extinguishing agent is added to water. Mixed (W
D) is reduced by about 20 to 50% as compared with the case of only water, and the fire extinguishing time is about 1/5 in the case of water only. It was found that fire extinguishing could be achieved.

Next, a fire extinguishing test for an oil fire (fire B) was performed using a fire model B. The B fire model is
320 L of water was put into an oil pan of 2000 mmD × 2000 mmW × 300 mmH, and 200 L of normanheptane was poured thereon. Water-forming foam (3% aqueous solution of water-forming foam extinguishing agent having the composition shown in Table 3) only;
. Water film foam (3 of water film foam extinguishing agent having the composition shown in Table 3)
% Aqueous solution) + potassium bicarbonate powder drug (potassium bicarbonate having a particle size of about 140 μm coated with a silicone resin thin film) was used to conduct a fire extinguishing experiment. Table 6 shows the results.
This is shown in FIGS.

[0035]

[Table 6]

As can be seen from Table 6, FIGS. 12 and 13, the knockdown time of the water-formed foam obtained by adding and mixing a powder fire extinguishing agent (FD) was 20 times greater than that of the aqueous film alone.
%, And the fire extinguishing time is about 1/4 of the case of using only the water film foam. It was found that according to the method of the present invention, knockdown and fire extinguishing can be realized in a very short time.

B. Radiation distance comparison test: Further, a comparison test was performed on the radiation distance, and the results were shown in FIGS.
It was shown to. As a result, the reason has not yet been elucidated,
It has been found that the radiation distance of WD or FD is 1.2 to 1.25 times longer than that of water alone or aqueous membrane foam alone.

[0038]

According to the conventional fire extinguishing method, it takes a considerable amount of time to suppress the flame during combustion. However, according to the present invention, a house, an apartment, a building, a factory, a tunnel, a warehouse, etc. A fire extinguishing equipment unit having a powder fire extinguishing agent supply device and a fire extinguishing water pumping line is provided, and while the powder fire extinguishing agent is added to and mixed with the fire extinguishing water pumping line, the mixed water is passed through a fire hose. By discharging from the radiation nozzle, the knockdown time and the extinction time of the flame in the fire part can be drastically reduced. In particular, since the fire extinguishing water is used as a carrier for the powder fire extinguishing agent, simply adding the powder fire extinguishing agent to the water extinguishment can simultaneously extinguish the fire with water and the fire extinguishing with the powder fire extinguishing agent. Fire extinguishing is realized. Moreover, since a radiation distance much longer than the radiation distance of only the pumping water can be obtained, the fire extinguishing ability can be enhanced. As a result, for example, the chance that firefighters and the like can rescue the victims involved in the fire is enhanced. In addition, as economic effects, it is possible to greatly reduce the amount of water used during fire extinguishing, reduce secondary disasters caused by water discharge to non-disaster targets by fire extinguishing water, and reduce the number of fire brigade members, fire fighting materials and fire fighting equipment.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an example of a building in which a fire extinguisher unit according to the present invention is installed in a basement.

FIG. 2 is an explanatory view of an example of a building in which a fire extinguishing equipment unit according to the present invention is installed on each floor.

FIG. 3 is a plan view and a front view of an apparatus for adding and mixing a powder fire extinguishing agent to the fire extinguishing water.

FIG. 4 is a plan view and a front view of an apparatus for adding and mixing a surfactant container and a surfactant mixer to the apparatus of FIG. 3;

FIG. 5 is an explanatory view of an indoor fire hydrant box containing a fire extinguishing equipment unit according to the present invention.

FIG. 6 is an explanatory view of an indoor fire hydrant box housing a fire extinguishing equipment unit of another example according to the present invention.

FIG. 7 is a front view of some radiating nozzles used in the present invention.

FIG. 8 is an explanatory view of an example in which the fire extinguishing equipment unit according to the present invention is attached to a sprinkler equipment arranged in a building.

FIG. 9 is a configuration diagram of a fire extinguishing system used in a test example of the present invention.

FIG. 10 is a graph of a test example.

FIG. 11 is a graph of a test example.

FIG. 12 is a graph of a test example.

FIG. 13 is a graph of a test example.

FIG. 14 is a graph of a test example.

FIG. 15 is a graph of a test example.

FIG. 16 is a graph of a test.

FIG. 17 is an external view of a crib used in the test.

FIG. 18 is a longitudinal sectional view of a Venturi tube used in the test.

[Explanation of symbols]

1: Fire hydrant on public road 2: Hose 3: Fire water 4: Fire engine 5: Fire hose 5 ': Fire hose 6: Concatenated water inlet 7: Surfactant container 8: Surfactant mixer 9: Powder fire extinguishing agent container 10: powder fire extinguishing agent mixer 11: water supply pipe main pipe 12: water supply pipe branch pipe 13: water discharge port 14: radiation nozzle 14a: radiation nozzle 14b: radiation nozzle 14c: radiation nozzle 14 ': air suction hole 15: mixed liquid 16: Gas cylinder for powder agitation 17: Pipe 18: Ridge 19: Fire squad dedicated plug or fire hydrant valve 20: Hose connection port 21: Narrow tube 22: Foam concentrate 23: Door 24: Fire squad dedicated plug storage box or fire hydrant storage box 25 : Pressurized water supply device 25 ': Pump 26: Sprinkler head 27: Flowing water detection device (automatic alarm valve, etc.) 50: Water pressure transmission line for fire extinguishing, 100: Crib,: First pressure gauge, The second pressure gauge,: third pressure gauge,
: Flow meter,: Ball cock,. : Gate valve

Continued on front page F term (reference) 2E189 CA06 CA08 EA07 2E191 AA01 AB51 AB54 AB59 4F033 QA10 QB03X QB05 QB15X QB17 QD02 QD11 QE05 QF08X

Claims (25)

[Claims] [Claim 1] House, condominium, building, factory,
In a building such as a tunnel or a warehouse, a fire extinguishing equipment unit having a powder fire extinguishing agent supply device and a fire extinguishing water pumping line is provided, and while the powder extinguishing agent is added and mixed to the fire extinguishing water pumping line, the mixed water Fire extinguishing from a radiation nozzle on the other side through a fire hose. 2. The fire extinguishing method for a building according to claim 1, wherein the fire extinguishing equipment unit further comprises a supply device for a stock solution or an aqueous solution of a surfactant. 3. The method for extinguishing a building according to claim 1, wherein 5 to 30 parts by weight of a powder fire extinguishing agent is added to and mixed with 100 parts by weight of the pumping water. 4. The fire extinguishing method for a building according to claim 1, wherein each of the powder fire extinguishing agents is coated with a waterproof coating. 5. A powder extinguishing agent according to claim 4, wherein the surface of each particle of the ammonium phosphate based extinguishing agent powder or the potassium bicarbonate extinguishing agent powder is coated with a silicone resin. A fire extinguishing method for a building according to the above. 6. The fire extinguishing method for a building according to claim 1, wherein the fire extinguishing equipment unit further comprises a supply device for a fire extinguishing foam solution or an aqueous solution thereof. . 7. A fire extinguisher water supply pipe set in a fire extinguishing equipment unit is partially formed as a Venturi pipe, and a powder fire extinguishing agent supply port is provided in the pipe section.
The fire extinguishing method for a building according to any one of the above. 8. A fire-extinguishing water supply pipe set in the fire-extinguishing equipment unit is partially formed as a Venturi pipe, and the pipe is provided with a powder fire extinguishing agent supply port and a fire extinguishing foam concentrate supply port. The method for extinguishing a building according to any one of claims 1 to 6. 9. A fire-extinguishing water supply line set in the fire-extinguishing equipment unit is partially formed as a Venturi tube, and a powder fire-extinguishing agent supply port and a surfactant stock solution supply port are provided in the pipe section. The fire extinguishing method for a building according to any one of claims 1 to 6. 10. A radiant nozzle having a ridge arranged on an inner wall portion of a pipe at an angle to a traveling direction, and a fire-extinguishing pressure water supply,
A fire extinguishing powder, a fire extinguishing foam and the like are swirled and mixed with each other to be homogenized.
10. The fire extinguishing method for a building according to any one of 9 above. 11. A radiating nozzle having a large number of air suction holes in a tube wall thereof.
The fire extinguishing method for a building according to any one of the above. 12. A fire extinguisher unit provided with a powder fire extinguishing agent supply device and a fire extinguishing water transmission line is provided in a building such as a house, an apartment, a building, a factory, a tunnel, a warehouse, and the like. Add powder extinguishing agent
The method for extinguishing a building according to any one of claims 1 to 11, wherein the mixed water is discharged from a sprinkler head of a sprinkler facility arranged in the building while mixing. 13. A fire extinguishing equipment unit having a powder fire extinguishing agent supply device and a fire extinguishing water pressure transmission line is installed in a building such as a house, an apartment, a building, a factory, a tunnel, a warehouse, and the like, and the fire extinguishing water pressure transmission line is provided. A means for adding and mixing the powder fire extinguishing agent, a fire hose for pumping mixed water obtained by the adding and mixing means, and a radiant nozzle on the other end thereof are installed, and the fire extinguishing water pressure feeding pipe is provided with A building equipped with a fire extinguisher unit, wherein the mixed water is discharged from a radiant nozzle through a fire hose while adding and mixing a powder fire extinguishing agent. 14. A fire extinguisher unit provided with a powder fire extinguishing agent supply device and a fire extinguishing water supply pipe is provided in a building such as a house, an apartment, a building, a factory, a tunnel, a warehouse, and the like. A means for adding and mixing the powder fire extinguishing agent, a fire hose for pumping the mixed water obtained by the means for adding and mixing, and a radiation nozzle ahead of the fire hose are installed, and the powder is supplied to the fire-extinguishing water pressure feeding line. A building provided with a fire extinguisher unit, wherein the mixed water is discharged from a sprinkler head of a sprinkler facility arranged in the building while adding and mixing a fire extinguishing agent. 15. The building provided with the fire extinguishing equipment unit according to claim 13, wherein the fire extinguishing equipment unit further comprises a supply device for a stock solution or an aqueous solution of a surfactant. 16. With respect to 100 parts by weight of pumping water, 5 to 30 parts
A building provided with a fire extinguisher unit according to any one of claims 13 to 15, further comprising means for adding and mixing parts by weight of a powder fire extinguishing agent. 17. The fire extinguishing equipment unit for a building according to claim 13, wherein each of the powder fire extinguishing agents is a powder coated with a waterproof coating. The installed building. 18. The fire-extinguishing powder according to claim 13, wherein the surface of each particle of the ammonium phosphate-based fire-extinguishing powder or the potassium bicarbonate fire-extinguishing powder is coated with a silicone resin. Any one of ~ 16
A building in which the fire extinguishing equipment unit described in the item is installed. 19. The fire extinguishing equipment unit further comprises a supply device for a fire extinguishing foam stock solution.
A building in which the fire extinguisher unit according to any one of 3, 14, 16 to 18 is installed. 20. The fire extinguishing equipment unit according to claim 13, wherein a part of the fire-extinguishing water pressure feeding line set in the fire extinguishing equipment unit is a Venturi tube, and a powder fire extinguishing agent supply port is provided in the tube portion.
20. A building in which the fire extinguisher equipment unit according to any one of to 19 is installed. 21. A part of a fire extinguishing water pressure feed line set in a fire extinguishing equipment unit is a venturi tube, and a powder fire extinguishing agent supply port and a fire extinguishing foam concentrate supply port are provided in the pipe section. A building in which the fire extinguishing equipment unit according to any one of claims 13 to 19 is installed. 22. A part of a fire extinguishing water pressure transmission line set in a fire extinguishing equipment unit is a venturi tube, and a powder fire extinguishing agent supply port and a surfactant stock solution supply port are provided in the pipe section. A building in which the fire extinguishing equipment unit according to any one of claims 13 to 19 is installed. 23. A radiating nozzle having a protruding portion which is arranged on the inner wall of the pipe so as to be inclined in the direction of travel, wherein fire-fighting water supply, powder fire extinguishing agent, fire-extinguishing foam and the like are swirled and mixed with each other. A building having a fire extinguisher unit according to any one of claims 13 to 15, wherein the building has a structure to be homogenized. 24. The fire extinguishing system according to claim 13, wherein the radiation nozzle has a large number of air suction holes in a tube wall thereof. Building where the unit was installed. 25. A building provided with a fire extinguisher unit according to any one of claims 13 to 24, wherein the fire extinguisher unit is installed on each floor of the building.