JPH03292969A - Fire extinguishing methods and fire extinguishing equipment - Google Patents

Abstract

PURPOSE:To reduce as small as possible the secondary disaster due to the overflow of fire extinguishing water in a fire by hosing the fire extinguishing water mixed with high water absorbing property polymer or adding the polymer to hosed fire extinguishing water. CONSTITUTION:One end of a polymer supply hose 5 is connected on the way of the absorbing side hose 2 of a fire extinguishing water pump 1 and the other end is connected to a container 4 containing high water absorbing property polymer 3. Negative pressure produced by a suction force of the fire extinguishing water pump 1 in the absorbing side hose 2 causes the high water absorbing property polymer 3 in the container 4 to be automatically sucked into the hose 2, mixed with water 8 in the hose 2 and hosed through the discharge side hose 6. The polymer grains have few water attached therebetween and substantially no stick after the water suction. Further, since the hosed fire extinguishing water is rapidly absorbed after fire fighting to prevent apparatus and wall surfaces from the intrusion of the fire extinguishing water and easily separated and slid down from the wall surfaces or the like, the recovering operation is facilitated so that the fire extinguishing water can easily be recovered by a suction type large-scaled cleaner or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a fire extinguishing method and a fire extinguishing device used in the fire extinguishing method.

BACKGROUND OF THE INVENTION In general, water alone or water mixed with extinguishing agents is generally used as water for extinguishing fires.

This water alone or water mixed with fire extinguishing agents is widely used for the purpose of extinguishing fires and cooling.

The problem that an invention attempts to solve.

Securing the above-mentioned fire extinguishing water in an emergency is easy and generally economical.

However, after the fire has been extinguished, the sprayed fire extinguishing water floods the disaster-stricken property and its surroundings, causing secondary damage to surrounding property and surrounding houses. For this reason, most precision instruments become unusable and must be replaced, and buildings also require extensive repair and remodeling, resulting in enormous economic losses.

The purpose of this invention is to minimize secondary disasters caused by flooding of fire extinguishing water during a fire.

Means for Solving the Problems The fire extinguishing method of the present invention to achieve the above object is as follows:
The method is characterized in that the superabsorbent polymer is mixed into fire extinguishing water and sprinkled with water, or mixed into sprayed fire extinguishing water.

Further, the fire extinguishing device of the present invention is also characterized in that it sprays water or mixes a superabsorbent polymer into the sprayed fire extinguishing water.

In the above, the superabsorbent polymer has an elution rate of 5%.
Hereinafter, a substantially non-sticky spherical material with an expansion rate of 1.5 times or more is used.

In this invention, fire extinguishing water includes not only the water wheel body but also water mixed with a fire extinguishing agent.

The superabsorbent polymer used in this invention has a dissolution rate in water of 5% or less, preferably 2% or less.

The superabsorbent polymer used in the present invention has an expansion ratio of 1.5 times or more, preferably 2 to 3 times, and is substantially non-sticky. Here, the expansion ratio is expressed as the polymer volume after water absorption/the volume of added water.

The superabsorbent polymer used in this invention is not particularly limited as long as it has the above-mentioned properties, but it is desirable that the water absorption capacity is 50 to 300 times that of deionized water.

The water absorption capacity is expressed as the volume of deionized water absorbed/polymer volume.

Further, it is desirable that the superabsorbent polymer used in the present invention is spherical, and the [longer diameter/breadth diameter] ratio of the polymer particles is 1.5 or less.

As the superabsorbent polymer used in this invention, a polymer obtained by the production method shown below is preferably used.

That is, acrylic acid and its alkali metal salt aqueous solution are dispersed in an aliphatic hydrocarbon solvent in which a polymeric dispersant is dissolved, and subjected to reverse phase suspension polymerization. It is a super absorbent polymer that is crosslinked with a crosslinking agent.

More details of the above manufacturing method are disclosed in Japanese Patent Application No. 63-38638 (Japanese Unexamined Patent Publication No. 1-213307) by the applicant of the present invention.
As it is described in detail in the patent application filed as ``PQ Polymer BL'', the explanation will be omitted here. It is sold under the trademark -100J, and can be achieved by directly mixing it into fire extinguishing water using the method described above.

In this invention, since a spherical polymer with an expansion ratio of 1.5 times or more is used as a preferable superabsorbent polymer, there is little water adhering between polymer particles after water absorption, and the voids between the particles are large. Therefore, the adhesion force between particles is small,
Very slippery. As a result, there is virtually no stickiness. Moreover, since the elution rate with respect to water is less than 5%, it can quickly absorb the released fire extinguishing water after extinguishing the fire, prevent the extinguishing water from penetrating into equipment and walls, and easily remove it from walls, etc. Since it separates and slides down, it is easy to collect it, and it can be easily collected using a large suction type vacuum cleaner or the like.

The properties of the PQ polymer BL-100 are as follows.

Appearance White powder Average particle size 70-150 μm Bulk specific gravity 0.95-1,00 Water content 5% or less Elution rate 2% or less Water absorption capacity Deionized water 70-200 times expansion ratio
2 to 3 times heat resistant temperature 150 to 200°C Example Next, a specific example of the method and apparatus of the present invention will be described. In FIG. Connect one end of the polymer supply hose (5) to the middle, and connect the other end to the super absorbent polymer (5) of the present invention.
The super absorbent polymer (3) in the container (4) is connected to the container (4) containing the super absorbent polymer ( 3) is automatically sucked into this hose (2), mixed into the water (8) within the hose (2), and discharged from the discharge hose (6). 5)
This is an on-off valve installed in the middle.

In Fig. 2, on the other hand, the supply hose (5) is connected to the discharging hose (6) immediately before the water nozzle (9) at the tip, and its function is the same as in Fig. 1. .

Figure 3 shows the fire water pump (1) hose (
2) Attach the polymer discharge nozzle αQ to the tip of the supply hose (5) without connecting to (6), and the filtrate (8) is discharged from the water discharge nozzle (8) of the fire water pump (1).
At the same time, it is released toward the flame and mixed into the water (8).

In the experiment conducted by the inventors in the same manner as shown in Fig. 1 above, the water (5) and polymer (3) mixed in the hoses (2) and (6) of the fire water pump (1) formed white foam. It was confirmed that there was almost no effect on the fire extinguishing ability. In addition, it could be easily collected using a large vacuum cleaner such as the one mentioned above. The condition of the wood receiving area after collection was very good.

Effects of the Invention As described above, according to the fire extinguishing method and fire extinguishing device of the present invention, the super absorbent polymer mixed in the fire extinguishing water absorbs the water after extinguishing the fire and becomes a non-sticky gel-like substance, which makes it easy to clean equipment and equipment. Since it is easily separated from the water absorbed from the wall or floor, secondary disasters can be prevented and economic losses can be minimized. Furthermore, in the method and apparatus of the present invention, when the polymer is mixed in the hose of the fire extinguishing water pump, it is only necessary to connect a hose for supplying the polymer to the middle of the hose.On the other hand, when the polymer is mixed into the discharged fire extinguishing water All you need to do is prepare a polymer release device.
This method has the advantage that it does not require major modification of existing equipment and can be implemented at relatively low cost.

[Brief explanation of the drawing]

FIGS. 1 to 3 are schematic diagrams showing embodiments of the present invention, respectively. (3)...Super absorbent polymer, (8)...Fire extinguishing water.

Claims (1)

[Scope of Claims] 1. A fire extinguishing method characterized by mixing a super absorbent polymer into fire extinguishing water and discharging the same, or mixing it into the discharged fire extinguishing water. 2. Super absorbent polymer elution rate is 5% or less, expansion rate is 1.5
2. The fire extinguishing device according to claim 1, which has a substantially non-sticky spherical shape. 3. A fire extinguishing system characterized by spraying water or mixing a super absorbent polymer into the sprayed fire extinguishing water. 4. Super absorbent polymer elution rate is 5% or less, expansion rate is 1.5
4. The fire extinguishing device according to claim 3, which has a substantially non-sticky spherical shape.