JP2003052849A - Additional unit for water fire hydrant equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the function of a water fire hydrant installed in a factory or the like by simply post-fitting a compact foam fire extinguish equipment to the water fire hydrant equipment. SOLUTION: This additional unit is formed by a pressure proportional mixer which can be fitted to the secondary side of a fire hydrant opening and closing valve in a hose storage box in the water fire hydrant equipment and a foam fire extinguisher stock solution storing pressure container which can be connected to the mixer and post-fitted and stored in the storage box. The mixer has a function of proportionally mixing the foam fire extinguisher stock solution in the foam fire extinguisher stock solution storing pressure container to water at a fixed value of mixing concentration in range of 0.3 to 2.0% in using the fire hydrant. Thus, generally in a building equipped with a water fire hydrant equipment such as a factory, not only fire extinguishing mainly for the general fire, but in the case of spraying and radiating a very low foamed foam fire extinguisher solution, fire extinguishing activity can be carried out effectively to the fire due to combustible liquid such as oil or solvent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention not only improves wettability of an ordinary fire (A fire) to combustibles, but can also be attached to an oil fire (B fire) to some extent by retrofitting to a water fire hydrant facility. The present invention relates to an additional unit for a water hydrant facility that can expect the effect of.

[0002]

2. Description of the Related Art Existing fire hydrant equipment is a water hydrant that is fixedly installed indoors or outdoors and emits water or bubbles. It simply radiates water and mainly aims to extinguish fires in general buildings.
A foam fire hydrant that releases foam using a foam fire extinguisher, and is mainly used to extinguish oil-based fires in hangars of aircraft, car repair shops, parking lots, and other hazardous materials facilities that are set by law. It is roughly divided into. In addition, in general, among buildings in which water hydrant equipment is installed, plastics such as cardboard and Styrofoam resin are often used, especially in factories.
In addition, a small amount of flammable liquid such as oil or solvent is often used, and a powder ABC fire extinguisher capable of handling an ordinary oil fire (B fire) is often installed in such a place.

[0003]

However, in a building such as a factory where water hydrant equipment is generally installed, there is a difficult problem to complete the fireproof equipment.
That is, even if a water hydrant is provided, it has no effect in the case of a fire of flammable liquid such as oil or solvent in a factory, etc., and it also sprays water against so-called deep fires such as cardboard and plastics such as Styrofoam resin. However, it is difficult to completely extinguish the fire because the surface tension repels water and the cooling effect is not fully exerted.

In addition to such general fires, it is also meaningless to provide a foam fire hydrant in order to cope with a fire in a factory where flammable liquids such as oil and solvent are handled. Because the foam fire hydrant uses the stock solution of the foam fire extinguishing agent at a mixing concentration of 3 to 6% with respect to water, the volume of the stock solution is large, and for this reason, a large mixer that is commonly used by multiple foam fire hydrants. It is necessary to install a separate foam fire extinguisher storage container separately, or to install a foam fire extinguisher storage container as a foam fire hydrant unit, as well as a large storage box containing a mixer, hose, and foam nozzle. Therefore, the installation space is larger than that of a water fire hydrant, and the cost is several times more expensive, which is not practical.

Not only that, but in the case of a foam fire hydrant, it radiates from the foam nozzle at the end of the hose as foam with a foaming ratio of 5 times or more, covers the combustion material, and extinguishes it by suffocation. Although it is high, there is little moisture in contact with the combustion surface, and the cooling effect is low compared to water radiation, so it is perfect against general fire (A fire) or so-called deep fire such as cardboard and plastics such as Styrofoam resin. It is difficult to extinguish a fire.

[0006] A portable powder (ABC) which is equipped with a water hydrant facility in a building such as a factory where a general fire is expected to occur and which can respond to oil fires in addition to general fires
Even if a fire extinguisher is provided, sufficient fire extinguishing activities cannot be carried out in the case of a so-called deep fire such as an obstacle at the place where the fire occurs or a plastic such as cardboard or styrofoam resin.

[0007]

Therefore, the present invention can be applied to a fire hydrant facility that has already been installed and is mainly adapted to ordinary fires, but also to flammable liquid fires such as oil and solvent and deep fires. The present invention according to claim 1 is a pressure proportioner system attachable to a secondary side of a fire hydrant opening / closing valve in a hose storage box of a water hydrant facility. It comprises a mixer and a foam fire extinguisher drug solution storage pressure container connectable to the mixer and capable of being retrofitted in the storage box, wherein the mixer is in a foam fire extinguisher drug solution storage pressure container when a fire hydrant is used. Foam fire extinguishing agent stock solution 0.3 to water
The present invention relates to an additional unit for a water hydrant facility, which is set so as to be mixed proportionally to a constant value mixed concentration within a range of 2.0%.

Further, the invention of claim 2 is such that when the fire hydrant is used, which is set in a pressure proportioner type mixer, the foam extinguishing agent stock solution in the storage container for storing the foam extinguishing agent stock solution is 0.3 to 0.3 parts with respect to water. Claim that the setting means for proportionally mixing to a constant value mixing concentration within the range of 2.0% is an orifice provided in the pressure proportioner type mixer for restricting the flow rate of the foam extinguishing agent stock solution. It also relates to the additional unit for water hydrant equipment according to Item 1.

Further, the invention of claim 3 has a plurality of foam fire extinguishing agent stock solution storage pressure vessels to be connected / stored afterward in a hose storage box in a water hydrant facility.
The present invention also relates to the additional unit for water hydrant equipment according to any one of 1 to 3.
Further, according to the invention of claim 4, a nozzle having a switching portion between the direct radiation and the spray radiation is attached to the tip of the hose stored in the hose storage box in the water hydrant equipment.
The present invention also relates to an additional unit for a water hydrant facility according to any one of claims 1 to 3, which enables spray emission of an extremely low foaming fire extinguishing agent aqueous solution as needed.

Furthermore, the invention of claim 5 is the water fire hydrant equipment according to claims 1 to 4, wherein a connection pipe is interposed between the foam fire extinguishing agent stock solution storage pressure vessel and the pressure proportioner type mixer. It is also related to the additional unit. Further, in the invention of claim 6, a connecting pipe is interposed between the foam extinguishing agent stock solution storage pressure vessel and the pressure proportioner type mixer, and a foam / water switching valve is attached to the mixer. Claims 1 to 5
It also relates to the additional unit for water hydrant equipment described in.

In the above-mentioned structure, first, the orifice for controlling the flow rate of the foam extinguishing agent stock solution is used to control the flow rate of water to 0.
In addition to installing a pressure proportioner type mixer that is set to perform proportional mixing to a constant value mixing concentration within the range of 3 to 2.0% on the secondary side of the fire hydrant opening / closing valve in the hose storage box of the water hydrant equipment. The fire extinguishing agent stock solution storage pressure container is housed in a storage box, and a conventional connecting pipe is interposed between the foam extinguishing agent solution storage pressure container and the above-mentioned pressure proportioner type mixer to connect the conventional composition. By using a nozzle that has a switching section between direct radiation and spray radiation for water hydrant equipment, it is possible to rationalize an extremely low foam fire hydrant addition unit that can respond to flammable liquid fire such as oil and solvent and deep fire Can be built in.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The specific contents of the present invention will be described below with reference to the embodiment shown in FIG. 1. Reference numeral 1 is a pressure proportioner type mixer, and 3 is a foam extinguishing agent stock solution storage pressure vessel. ing. The pressure proportioner type mixer, though not particularly shown, has a structure known per se, and when attached to a fire hydrant, the mixing concentration with the foam extinguishing agent is always constant even if the flow rate of water changes. It has a function that can be maintained at, generally 3 to 6 stock solution of foam extinguishing agent against water.
It is known to mix proportionally to a constant value mixing concentration within the range of%.

Therefore, in the present invention, mixing of this foam extinguishing agent stock solution in a pressure proportioner type mixer, which is generally known as mixing in proportion to a constant value mixing concentration in the range of 3 to 6% with respect to water The concentration range was changed to a fixed concentration range to be described later and changed to a low mixture concentration range. It was used as a pressure proportioner system mixer 1, and the foam formulation was stored in the storage container for storing the foam formulation. It is characterized in that it is mixed with water and adjusted to a low mixed concentration to emit radiation.

The foam extinguishing agent stock solution stored in the pressure proportioner type mixer 1 in the present embodiment is stored in the foaming extinguishing agent stock solution storage pressure vessel 3 in a low mixing concentration of a constant value with respect to water. As a function of adjusting, although not shown in the drawing, an orifice for regulating the flow rate of the foam extinguishing agent stock solution is provided. Further, the pressure proportioner type mixer 1 described above is provided with a foam / water switching valve 2 so that when it is attached to the water fire hydrant 7, only water is radiated depending on the content of the fire that has occurred, or a foam fire extinguishing agent. It is possible to manually switch whether to radiate the aqueous solution.

The foam-extinguishing agent stock solution storage pressure container 3 has a size that can be retrofitted in the fire hydrant hose storage box 6, and is filled with the foam extinguishing agent solution. Therefore, the pressure proportioner type mixer 1 is attached to the secondary side of the on-off valve 7a of the water fire hydrant 7 in the fire hydrant hose storage box 6, and the foam extinguishing agent stock solution storage pressure container 3 is stored in the storage box 6, and further, The foam extinguishing agent stock solution storage pressure vessel 3 and the pressure proportioner type mixer 1 described above are connected via connection pipes such as a primary side pressurized water introducing tube 4 and a secondary side stock solution mixing tube 5. In the figure, 8 indicates a fire hydrant hose.

Further, in this case, various experiments were carried out on the range intended by the present invention as a mixing concentration for adjusting the flow rate of the foam extinguishing agent stock solution by an orifice or the like when the pressure proportioner type mixer 1 is caused to function. When the ratio of the foam concentrate to water is 0.2% or less, almost no foaming can be expected, and the effect of extinguishing a flammable liquid fire such as oil or solvent cannot be sufficiently exerted, and at least 0.
It turned out that 3% or more is necessary. On the other hand, when it exceeds 2.0%, the volume of the stock solution increases, and the foam fire extinguishing agent storage container has to be upsized, which makes it difficult to install it in the hose storage box 6 of the existing water hydrant equipment. Not only will the overall cost rise significantly.

Further, when the expansion ratio is high, the radiated fire extinguishing liquid has less moisture in contact with the combustion surface, and the cooling effect is lower than that of water radiation, so that a general fire (A fire) occurs.
Alternatively, it is difficult to completely extinguish a so-called deep fire such as a cardboard or a plastic such as a styrofoam resin. Therefore, according to the present invention, a water hydrant facility that is already installed, mainly corresponding to a normal fire, can be reasonably incorporated with an additional unit that can cope with a flammable liquid fire such as oil or solvent or a deep fire. As a preferable low mixing concentration to meet the intended purpose of
It is necessary to be within the range of 3 to 2.0%.

In the above embodiment, the hose storage box 6 in the water fire hydrant equipment has one foam storage container 3 for storing the foam extinguishing agent concentrate, which is connected and stored later, but in some cases, a plurality of containers may be used. It may be divided and accommodated.
Furthermore, a nozzle 9 having a switching portion between a straight radiation and a spray radiation is attached to the tip of the fire hydrant hose 8 stored in the water fire hydrant hose storage box 6, whereby an extremely low foaming fire extinguishing can be performed if necessary. Aqueous drug solution spray radiation may be enabled.

In the above construction, the pressure proportioner type mixer 1 is attached to the secondary side of the fire hydrant opening / closing valve 7 in the hose storage box 6 in the water hydrant equipment, and the foam fire extinguishing agent stock solution storage pressure container 3 is attached to the storage box. 6
It is housed inside and further connected by interposing a connection pipe consisting of a primary side pressurized water introducing tube 4 and a secondary side undiluted solution mixing tube 5 between the foam extinguishing agent stock solution storage pressure vessel 3 and the pressure proportioner type mixer 1. To do.

When a fire occurs in a factory where water hydrant equipment is installed, however, when the fire is a general fire, the foam / water switching valve 2 of the mixer 1 is switched to the water side and the hydrant 7 The water to be pressure-fed by opening the on-off valve 7a is radiated from the mixer 1 through the fire hydrant hose 8 toward the fire source by the nozzle 9 to carry out the fire fighting activity.

When the content of the fire that has occurred is a so-called deep fire such as a flammable liquid fire such as oil or solvent, or a plastic such as cardboard or styrofoam resin, the foam / water switching valve of the mixer 1 is used. 2 is switched to the foam side, the on-off valve 7a of the fire hydrant 7 is opened, and part of the water that is pumped is sent from the primary side pressurized water introducing tube 4 into the foam fire extinguishing agent stock solution pressure vessel 3 and the foam extinguishing agent stock solution pressure vessel The pressure inside 3 is increased, and the foam extinguishing agent stock solution is pumped into the mixer 1 through the secondary side stock solution mixing tube 5 from a siphon pipe (not shown) whose tip reaches the bottom of the foam extinguishing agent stock solution pressure vessel 3. To do.

The foam extinguishing agent stock solution that has been pressure-fed is adjusted to 0.3 to 2.0 with respect to water by using the mixing concentration adjusting function of the orifice or the like in the mixer 1 to store the foam extinguishing agent stock solution in the pressure vessel. A constant value within the range of% (for example, 0.
It is radiated toward the fire source by the nozzle 9 through the fire hydrant hose 8 while being mixed in proportion to the mixed concentration of 7%).

[0023]

As described above, the present invention is a pressure proportioner type mixer that can be attached to the secondary side of a fire hydrant opening / closing valve in a hose storage box of a water hydrant facility, and a mixer that can be connected to the mixer and that has the aforementioned storage. It comprises a foam extinguishing agent stock solution storage pressure container which can be housed in a box afterwards, and the mixer has a foam extinguishing agent solution storage pressure container in an orifice or the like when using a fire hydrant. ．
Since it has a function of proportionally mixing to a fixed concentration in the range of 3 to 2.0%, in buildings such as factories where water hydrant equipment is installed Not only the fire extinguishing but also the spraying of the extremely low foaming foam extinguishing agent aqueous solution using the spray nozzle etc. can effectively carry out the fire extinguishing activities against the fire of the flammable liquid such as oil and solvent. .

Further, the foam extinguishing agent stock solution was diluted to 0.
Since it is used by being mixed in proportion to a fixed value mixing concentration within the range of 3 to 2.0%, the storage amount of the foam extinguishing agent stock solution may be small, and as a result, the size of the foam extinguishing agent stock solution storage pressure container It can be made relatively compact, and as a result, it can be retrofitted in the water hydrant hose storage box.
Since it can be stored in a large size, it can be used as an additional unit after the existing water fire hydrant equipment is installed.Therefore, the cost is significantly higher than when installing a foam fire hydrant in addition to the water fire hydrant. Can be reduced.

Furthermore, when a connecting pipe is interposed between the above-mentioned stock solution pressure container for storing the foam extinguishing agent stock solution and the pressure proportioner type mixer, and further, a foam / water switching valve is interposed in the mixer. In
When the fire is a general fire, the foam / water switching valve of the mixer is switched to the water side, and the water that is pumped by opening the on / off valve of the hydrant is directed from the mixer to the fire source through the hydrant hose by the nozzle. It can be radiated to carry out fire fighting activities.

In the case of a so-called deep fire such as a flammable liquid fire such as oil or solvent, or a plastic such as cardboard or styrofoam resin, the foam / water switching valve of the mixer is switched to the foam side and the fire hydrant is used. Open the on-off valve to open a part of the water to be pumped from the primary side pressurized water introduction tube into the foam extinguishing agent stock solution pressure vessel, increase the pressure in the foam extinguishing agent stock solution pressure vessel, and the tip of the foam extinguishing agent solution From the siphon pipe (not shown) reaching the bottom of the pressure vessel, pump the foam extinguishing agent stock solution toward the secondary side stock solution mixing tube so that it is emitted from the nozzle at the tip toward the fire source through the fire hydrant hose. Therefore, in the case of a general fire or a flammable liquid fire such as oil or solvent, radiation of water alone or foam extinguishing can be done only by operating the "foam / water switching valve". The fire fighting can be carried out arbitrarily select switch one of the aqueous solution radiation.

Further, a nozzle having a switching portion between a straight radiation and a spray radiation is attached to the tip of the hose stored in the water hydrant hose storage box, and if necessary, a spray foam of a fire extinguishing agent aqueous solution of extremely low foaming is radiated. If it is possible, fire extinguishing activities can be carried out more efficiently.

[Brief description of drawings]

FIG. 1 is a side view showing an attached state of a foam fire extinguishing agent aqueous solution injection additional unit to an existing water fire hydrant, which is one embodiment of the present invention.

[Explanation of symbols]

1 Pressure proportioner type mixer 2 Bubble / water switching valve 3 Foam fire extinguishing agent stock solution storage pressure vessel 4 Primary side pressurized water introduction tube 5 Secondary side stock solution mixing tube 6 Fire hydrant hose storage box 7 water hydrant 7a Open / close valve 8 Fire hydrant hose 9 nozzles

Claims (6)

[Claims] 1. A pressure proportioner type mixer that can be attached to the secondary side of a fire hydrant opening / closing valve in a hose storage box of a water hydrant facility, and a mixer that can be connected to the mixer and can be stored later in the storage box. A foam storage fire extinguishing agent stock solution storage pressure vessel, the mixer, when using a fire hydrant,
Foam fire extinguisher stock solution storage water characterized in that it is set so that the foam extinguishing agent stock solution in the pressure vessel is proportionally mixed with water to a constant value mixing concentration within the range of 0.3 to 2.0%. Additional unit for fire hydrant equipment. 2. When the fire hydrant is used, which is set in a pressure proportioner type mixer, the foam extinguishing agent stock solution in the storage container for storing the foam extinguishing agent stock solution is 0.3 against water.
The setting means for proportionally mixing to a constant value mixing concentration within the range of ˜2.0% is by an orifice provided in the pressure proportioner type mixer, which restricts the flow rate of the foam extinguishing agent stock solution. Claim 1
Additional unit for water hydrant equipment described in. 3. A hose storage box in a water hydrant facility,
The additional unit for water fire hydrant equipment according to claim 1 or 2, wherein there are a plurality of stock foam storage containers for the foam fire extinguishing agent that are connected / stored afterward. 4. A foam fire extinguishing agent with extremely low foaming is attached to the tip of the hose stored in the hose storage box of the water hydrant equipment, with a nozzle having a switching section between direct radiation and spray radiation, if necessary. An additional unit for a water hydrant facility according to any one of claims 1 to 3, which is capable of spraying an aqueous solution. 5. The water fire hydrant installation additional unit according to claim 1, wherein a connection pipe is interposed between the foam fire extinguishing agent stock solution storage pressure vessel and the pressure proportioner type mixer. 6. A foaming / extinguishing agent stock solution storage pressure vessel and a pressure proportioner type mixer, wherein a connecting pipe is interposed and a foam / water switching valve is attached to the connecting portion. 1 to 5 additional unit for water hydrant equipment.