JP2015208642A - Foam fire-extinguishing apparatus and foam fire-extinguishing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foam fire-extinguishing apparatus and foam fire-extinguishing system capable of efficiently foaming aqueous solution including fire-extinguishing foam in a fire extinguishant container.SOLUTION: The fire-extinguishing apparatus includes: a fire extinguishant container for storing an aqueous solution including fire-extinguishing foam; a gas supplier for supplying the inside of the fire extinguishant container with gas; and a foam nozzle for discharging the aqueous solution, in a foam form, that is pushed out from the inside of the fire extinguishant container by gas pressure of the gas supplier. The gas supplied from the gas supplier is discharged to both the inside of the aqueous solution and a space outside the aqueous solution out of the inside of the fire extinguishant container.

Description

  The present invention relates to a foam fire extinguishing equipment and a foam fire extinguishing system.

  Conventionally, a foamer that mixes foam fire extinguishing agent and water to produce a mixed liquid, a foamer that foams the mixed liquid supplied from the mixer using compressed air, and a fire extinguisher supplied from the foamer There is known a foam fire extinguishing facility including a fire extinguishing nozzle that ejects foam. Such a foam extinguishing equipment is disclosed in Patent Document 1, for example.

  On the other hand, it is also possible to provide a container for containing an aqueous solution containing a foam fire extinguishing agent in advance and to provide a foam fire extinguishing equipment that does not have a mixer for generating the above-described mixed liquid.

JP 2012-165944 A

  FIG. 4 shows an example of a fire extinguisher container containing an aqueous solution containing a foam fire extinguishing agent. The fire extinguisher container 200 of FIG. 4 has a pressure supply unit and a foam nozzle (not shown) connected to each other via a tubular member, and when the pressure in the fire extinguisher container increases due to the pressure of the gas G supplied from the pressure supply unit, The aqueous solution W is pushed out toward the foam nozzle, and fire extinguishing bubbles are discharged from the foam nozzle toward the fire extinguishing target.

  There are various means for foaming an aqueous solution containing a foam extinguishing agent, but it is desired to foam by an easier means.

  The objective of this invention is providing the foam fire extinguishing equipment and foam fire extinguishing system which can make the aqueous solution containing a foam fire extinguishing agent foam in a fire extinguisher container.

  The foam fire extinguishing equipment as the first aspect of the present invention includes a fire extinguisher container that contains an aqueous solution containing a foam fire extinguishing agent, a gas supplier that supplies gas to the inside of the fire extinguishing agent container, and a In the foam fire extinguishing equipment provided with a foam nozzle for discharging the aqueous solution extruded from the inside of the fire extinguisher container by the pressure of the gas, the gas supplied from the gas supplier is the inside of the fire extinguisher container , And discharged into both the aqueous solution and the space outside the aqueous solution.

  As one embodiment of the present invention, a tubular part for discharging the gas into the fire extinguisher container extends inside the fire extinguisher container, and the tubular part is disposed in the aqueous solution. It is preferable that a first discharge port for discharging the gas and a second discharge port for discharging the gas into the space outside the aqueous solution are partitioned.

As one embodiment of the present invention, the first discharge port is a tip opening of the tubular portion,
It is preferable that the second discharge port is an opening defined on a side wall of the tubular portion.

  As one embodiment of the present invention, the gas supply unit includes a gas container that contains the gas, and a tubular member that supplies the gas from the gas container to the inside of the extinguishing agent container, It is preferable that the tubular portion of the agent container is constituted by a distal end portion of the tubular member, and the tubular member is formed with a pressure adjusting portion that reduces the diameter of the gas flow path.

  The foam fire extinguishing system as the second aspect of the present invention includes the foam fire extinguishing equipment, a cable tray having a vertical portion extending in a vertical direction, and a cable arranged along the vertical portion of the cable tray. And the foam nozzle discharges bubbles toward the cable tray.

  ADVANTAGE OF THE INVENTION According to this invention, the foam fire extinguishing equipment and foam fire extinguishing system which can foam the aqueous solution containing a foam fire extinguishing agent within a fire extinguisher container can be provided.

It is a figure which shows the foam fire extinguishing equipment and foam fire extinguishing system as embodiment of this invention. It is a figure which shows the fire extinguisher container in the foam fire extinguishing equipment as one Embodiment of this invention. It is a figure which shows the foam nozzle in the foam fire extinguishing equipment as one Embodiment of this invention. 3A is a view of the foam nozzle as viewed from the side wall in the horizontal direction, and FIG. 3B is a cross-sectional view taken along the line II in FIG. 3A. It is a figure which shows an example of the fire-extinguishing agent container which accommodates the aqueous solution containing a foam fire-extinguishing agent.

  Hereinafter, embodiments of a foam fire extinguishing facility and a foam fire extinguishing system according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure.

  FIG. 1 is a diagram illustrating a foam extinguishing system 100 that is one embodiment of the present invention. The foam fire extinguishing system 100 includes the foam fire extinguishing equipment 1 which is one embodiment of the present invention. Hereinafter, the foam fire extinguishing system 100 and the foam fire extinguishing equipment 1 as an embodiment of the present invention will be described in detail.

  As shown in FIG. 1, the foam fire extinguishing system 100 includes a foam fire extinguishing equipment 1, a cable tray 2 having a vertical portion extending in the vertical direction, and a cable 3 arranged along the vertical portion 50 of the cable tray 2. And comprising. First, the foam fire extinguishing equipment 1 as one embodiment of the present invention will be described.

<Foam extinguishing equipment 1>
As shown in FIG. 1, the foam fire extinguishing equipment 1 includes a fire extinguisher container 5 that contains an aqueous solution W containing a foam fire extinguishing agent, a gas supplier 6 that supplies a gas G to the inside of the fire extinguishing agent container 5, and this gas A foam nozzle 7 for discharging bubbles of the aqueous solution W pushed out from the inside of the extinguishing agent container 5 by the pressure of the gas G from the supply device 6 and a detector 40 for detecting a fire to be extinguished are provided. Hereinafter, each structure and characteristic part of the foam fire-extinguishing equipment 1 are demonstrated in detail.

[Fire extinguisher container 5]
FIG. 2 is a diagram showing details of the fire extinguishing agent container 5. As shown in FIG. 2, an aqueous solution W containing a foam fire extinguishing agent is accommodated in the extinguishing agent container 5. Inside the fire extinguishing agent container 5, two tubular portions 8 and 9 are provided that extend into an internal space that stores the aqueous solution W. The fire extinguisher container 5 is provided with a pressure gauge 10 that detects and displays the internal pressure. In addition, although the aqueous solution W in the foam fire extinguishing equipment 1 as this embodiment contains a water film-forming foam fire-extinguishing agent as a foam fire-extinguishing agent, the foam fire-extinguishing agent is not limited to the water film-forming foam fire-extinguishing agent, and the synthetic interface Various foam extinguishing agents such as activators can be used.

  Here, the gas G supplied from the gas supply device 6 is discharged through the one tubular portion 8 into both the aqueous solution W and the space outside the aqueous solution W in the extinguishing agent container 5 (FIG. 2). (See the dashed arrow). The aqueous solution W of the extinguishant container 5 is supplied to the foam nozzle 7 through the other tubular portion 9 by the pressure of the gas supplied from the gas supply unit 6 to the inside of the extinguishant container 5 (see the solid arrow in FIG. 2). ). Details of the two tubular portions 8 and 9 shown in FIG. 2 will be described later.

[Gas supply device 6]
The gas supply unit 6 includes a gas container 11 that stores the gas G in a high pressure state, a tubular member 12 that supplies the gas G from the gas container 11 to the inside of the extinguishing agent container 5, and an inner diameter of the tubular member 12 is reduced. A pressure adjusting orifice member 13 that forms a pressure adjusting unit to be operated, and a container valve solenoid 14a as a valve member 14 capable of changing the amount of gas supplied from the gas container 11 to the tubular member 12.

  The gas container 11 in the present embodiment has a capacity of 2L to 60L, and contains nitrogen gas having a filling pressure of 10.8 Mpa as the gas G. When the container valve solenoid 14a as the valve member 14 is opened, the nitrogen gas is supplied into the extinguishant container 5 through the tubular member 12 and the pressure adjusting orifice member 13. In addition, although the gas container 11 in this embodiment has accommodated nitrogen gas as the gas G, the gas accommodated is not restricted to nitrogen gas, Various gas can be used. Moreover, the capacity | capacitance of the gas container 11, gas filling pressure, and discharge | release pressure can each be suitably changed according to a design target value, and are not restricted to the thing of the numerical value mentioned above.

  The tubular member 12 in the present embodiment is a copper tube, and connects the inside of the gas container 11 and the inside of the extinguishing agent container 5 via the pressure adjusting orifice member 13. One tubular portion 8 extending into the extinguishant container 5 is constituted by a distal end portion of the tubular member 12. Therefore, nitrogen gas as the gas G in the gas container 11 is discharged into the extinguishing agent container 5 through the tubular member 12.

  The pressure adjusting orifice member 13 is used to reduce the pressure of nitrogen gas supplied from the gas container 11 through the tubular member 12 into the extinguishing agent container 5. In other words, the tubular member 12 in the present embodiment is formed with a pressure adjusting orifice member 13 in which a pressure adjusting portion for reducing the diameter of the flow path of the gas G is formed. The pressure adjusting orifice member 13 is provided outside the extinguishant container 5 on the proximal end side of the distal end portion constituting the tubular portion 8 of the tubular member 12. The pressure adjusting orifice member 13 in the present embodiment can reduce the nitrogen gas filled in the gas container 11 at a filling pressure of 10.8 Mpa to 0.9 Mpa or less and supply it to the fire extinguisher container 5. Is formed. The throttle diameter, length, and the like of the pressure adjusting orifice member 13 can be appropriately changed according to the pressure target value before and after the pressure reduction as described above and the supplied gas flow rate, and according to the pressure target value and the gas flow rate. Designed.

  The container valve solenoid 14a as the valve member 14 is controlled based on the detection result of the detector 40 that detects the fire to be extinguished. Specifically, when the detector 40 detects a fire, control for opening the container valve solenoid 14 a is executed, and as a result, the gas G is supplied from the gas container 11 to the extinguishant container 5. Details of the detector 40 will be described later.

[Form nozzle 7]
The foam nozzle 7 discharges the aqueous solution W supplied from the fire extinguishing agent container 5 through the tubular portion 9 to the fire extinguishing target. More specifically, the aqueous solution W pushed up into the tubular portion 9 shown in FIG. 2 is carried to the foam nozzle 7 through the tubular member 15 shown in FIG. Is done.

  FIG. 3 is a view showing the foam nozzle 7. As shown in FIGS. 1 and 3, the foam nozzle 7 in the present embodiment has a hollow rod shape, and has a substantially cylindrical shape in the present embodiment. As shown in FIGS. 3A and 3B, the circumferential side wall of the foam nozzle 7 defines a plurality of discharge ports 30 through which bubbles of the aqueous solution W supplied into the hollow portion are discharged. Further, the foam nozzle 7 in the present embodiment is arranged so as to extend in a substantially horizontal direction, and the plurality of discharge ports 30 are not provided in a vertical plane including the center line O of the foam nozzle 7, It is provided on the side wall of one of the two semi-cylindrical parts divided by the vertical plane (see FIG. 3B). Therefore, the foam nozzle 7 in the foam fire-extinguishing system 100 shown in FIG. 1 can discharge bubbles in the horizontal direction toward the cable 3 extending in the vertical direction along the cable tray 2. In addition, although the foam nozzle 7 in this embodiment is a substantially cylindrical shape, it is not restricted to this shape, It is possible to change suitably according to the shape etc. of fire extinguishing object. Moreover, although the discharge port 30 in this embodiment is multiply arranged by each in the longitudinal direction and the circumferential direction of the foam nozzle 7, the number and position of the discharge ports 30 change suitably according to the shape etc. of fire extinguishing object. It is possible. For example, the discharge port 30 of the present embodiment is arranged so that the position in the circumferential direction differs depending on the position in the longitudinal direction of the foam nozzle 7, but the circumferential direction regardless of the position in the longitudinal direction of the foam nozzle 7. The positions may be the same.

  Further, as shown in FIG. 3B, a stainless steel mesh sheet (metal mesh) 19 that divides a plurality of minute gaps through which the aqueous solution W passes is disposed in the hollow portion of the foam nozzle 7, and a metal mesh A structure is formed. The stainless steel mesh sheet 19 allows the aqueous solution W to be stirred and further foamed. Furthermore, as shown in FIG. 1, the foam nozzle 7 in this embodiment is provided with two or more along the vertical type cable tray 2 in which the cable 3 which is a fire extinguishing object is mounted. In this embodiment, the stainless steel mesh sheet 19 is used. However, the mesh sheet is not limited to stainless steel or stainless steel as long as it is a material having an antirust effect.

[Detector 40]
The detector 40 controls the opening and closing of the container valve solenoid 14a described above based on the detection unit that detects the fire to be extinguished, the receiver 42 that receives the detection result of the detection unit, and the reception information of the receiver 42. And a controller 43.

  In the foam extinguishing system 100 illustrated in FIG. 1, the cable 3 on the cable tray 2 is a fire extinguishing target, and the detection unit of the foam extinguishing equipment 1 is configured to detect a fire of the cable 3. Specifically, the detection unit of the foam fire-extinguishing equipment 1 includes a detection line 44 disposed so as to contact the cable 3 and an infrared spot detection sensor 45 that detects a fire of the cable 3 by infrared rays. System.

  The detection line 44 is configured by twisting and integrating two linear members coated with vinyl on a metal wire (piano wire in the present embodiment). The broken lines shown in FIG. 1 indicate that two linear members twisted and integrated are stretched on the cable 3. When a fire occurs in the cable 3, the vinyl covered with the detection wire 44 is melted by heat, and the metal wires come into contact with each other to short-circuit. The receiver 42 can receive an electrical signal due to this short circuit. Further, the infrared spot type detection sensor 45 can detect infrared rays due to the flame of the cable 3. Therefore, when the detection sensor 45 detects a flame, the detection sensor 45 transmits to the receiver 42 that there is a fire in the cable 3, and the receiver 42 can receive the information. When the receiver 42 receives information indicating a fire of the cable 3 from the detection line 44 or the detection sensor 45, the controller 43 executes control to open the container valve solenoid 14a. As a result, the gas G accommodated in the gas container 11 in a high pressure state is supplied into the extinguishing agent container 5 through the tubular member 12 and the pressure adjusting orifice member 13.

[Tubular portion 8 extending into the extinguishant container 5]
Next, one tubular portion 8 extending in the extinguishant container 5 will be described. One tubular portion 8 in the present embodiment is constituted by the distal end portion of the tubular member 12 of the gas supply device 6 as described above. As described above, the tubular portion 8 is a portion that discharges the gas G accommodated in the gas container 11 into both the aqueous solution W and the space outside the aqueous solution W in the extinguishing agent container 5. . More specifically, as shown in FIG. 2, the tubular portion 8 includes a first discharge port 16 that discharges the gas G into the aqueous solution W, and a second discharge port 17 that discharges the gas G into the internal space outside the aqueous solution W. In the foam fire extinguishing equipment 1 of the present embodiment, the first discharge port 16 is the tip opening of the tubular portion 8, and the second discharge port 17 is the upper circumferential side wall of the tubular portion 8. It is the opening divided into two.

  That is, the gas G discharged from the opening of the distal end of the tubular portion 8 as the first discharge port 16 is discharged into the aqueous solution W, rises while stirring the aqueous solution W, and accumulates in the internal space outside the aqueous solution W. . The gas G discharged from the opening defined as the second discharge port 17 on the side wall of the tubular portion 8 is directly discharged into the internal space outside the aqueous solution W and accumulated in the internal space. As a result, the gas G discharged from the first discharge port 16 and the second discharge port 17 and accumulated in the internal space outside the aqueous solution W presses the aqueous solution W, and the foam nozzle passes through the other tubular portion 9 and the tubular member 15. 7 is supplied.

  With such a configuration, stirring and pressurization of the aqueous solution W are simultaneously performed in the extinguishant container 5 by the gas G discharged from the first discharge port 16 and the second discharge port 17 of the tubular portion 8. Thus, the aqueous solution W can be foamed in the extinguishant container 5. Therefore, the aqueous solution W in the extinguishant container 5 is in a foamed state when being pushed out to the other tubular portion 9, so that the aqueous solution W is not stirred and pressurized in the extinguishing agent container 5. Thus, a more foamed fire extinguishing foam can be discharged from the foam nozzle 7.

  The tubular member 15 of the present embodiment is provided with a valve 18 that can manually open and close the flow path of the tubular member 15, and this valve 18 is operated by an operator during maintenance work, for example. .

  Here, although the tubular part 8 in this embodiment is comprised by the front-end | tip part of the tubular member 12 of the gas supply device 6, for example, a tubular part is integrally formed in a fire extinguisher container, and the tubular member of a gas supply device You may comprise so that the front-end | tip part may be connected to a tubular part.

[Tubular portion 9 extending into the fire extinguisher container 5]
Next, the other tubular portion 9 extending into the fire extinguisher container 5 will be described. The tubular portion 9 in the present embodiment is a siphon tube integrally formed with the fire extinguisher container 5 and is connected to the tubular member 15. As described above, when the pressure of the gas G rises in the fire extinguisher container 5, the aqueous solution W is carried to the foam nozzle 7 through the tubular portion 9 and the tubular member 15 that are siphon tubes.

  In addition, in the foam fire extinguishing equipment 1 of the present embodiment, the tubular portion 9 is formed integrally with the fire extinguisher container 5, but for example, the tubular portion can be welded to the fire extinguisher container. It is also possible to connect the tubular portion to the extinguishing agent container by fastening means such as bolts and nuts. Furthermore, this tubular part can also be comprised by the base end part of the tubular member which connects a fire extinguisher container and a foam nozzle.

<Foam extinguishing system 100>
Next, the foam fire extinguishing system 100 which is another embodiment of this invention is demonstrated in detail. The foam fire extinguishing system 100 includes the above-described foam fire extinguishing equipment 1, a cable tray 2 having a vertical portion 50 extending in the vertical direction, and a cable 3 arranged along the vertical portion 50 of the cable tray 2. . In addition, the foam fire-extinguishing system 100 of this embodiment makes the cable 3 arrange | positioned along the vertical type cable tray 2 a fire extinguishing target. Moreover, since the detail of the foam fire extinguishing equipment 1 was mentioned above, description is abbreviate | omitted here.

  The cable tray 2 of the foam fire-extinguishing system 100 is obtained by galvanizing an iron casing. The vertical portion 50 extends in the vertical direction, is continuous with the vertical portion 50, and extends in the horizontal direction. And a horizontal portion 51. The cable 3 is disposed along the cable tray 2 so as to be supported by the vertical portion 50 and the horizontal portion 51 of the cable tray 2.

  As shown in FIG. 1, the foam nozzle 7 in the foam fire extinguishing system 100 of the present embodiment is disposed at a position spaced apart from the vertical portion 50 of the cable tray 2 in the horizontal direction by the foam nozzle 7. Bubbles are discharged from the plurality of discharge ports 30 toward the vertical portion 50 of the cable tray 2.

  According to the foam fire extinguishing system 100 of the present embodiment, the aqueous solution W of the aqueous solution W is discharged by the gas G discharged from the first discharge port 16 and the second discharge port 17 of the tubular portion 8 in the fire extinguisher container 5 of the foam fire extinguishing facility 1. By performing stirring and pressurization simultaneously, a highly foamed fire extinguishing foam can be discharged from the foam nozzle 7. Therefore, the fire-extinguishing foam discharged from the foam nozzle 7 does not easily flow down from the surface of the fire extinguishing target, for example, the fire extinguishing target extending in the vertical direction, such as the cable 3 in the present embodiment. Easy to stay. As a result, a sufficient suffocation effect can be realized even for a fire extinguishing target extending in the vertical direction.

  The present invention relates to a foam fire extinguishing equipment and a foam fire extinguishing system.

1: Foam fire extinguishing equipment 2: Cable tray 3: Cable 5: Fire extinguisher container 6: Gas supply device 7: Foam nozzle 8: Tubular part (tip part of tubular member)
9: Tubular part 10: Pressure gauge 11: Gas container 12: Tubular member 13: Pressure adjusting orifice member (pressure adjusting part)
14: Valve member 14a: Container valve solenoid 15: Tubular member 16: First discharge port (end opening of the tubular portion)
17: 2nd discharge port 18: Valve 19: Mesh sheet 30: Release port 40: Detector 42: Receiver 43: Controller 44: Detection line 45: Infrared spot type detection sensor 50: Vertical part 51: Horizontal part 100: Foam extinguishing system 200: Extinguishing agent container G: Gas O: Foam nozzle center line W: Aqueous solution containing foam extinguishing agent

Claims (5)

A fire extinguisher container containing an aqueous solution containing a foam fire extinguishing agent;
A gas supply for supplying gas into the extinguishing agent container;
In a foam fire-extinguishing facility comprising a foam nozzle for discharging the aqueous solution foamed from the inside of the extinguishing agent container by the pressure of the gas from the gas supply,
The foam fire extinguishing equipment, wherein the gas supplied from the gas supplier is discharged into both the aqueous solution and the space outside the aqueous solution in the extinguishing agent container. Inside the fire extinguisher container, a tubular portion for discharging the gas into the fire extinguisher container extends,
The tubular portion partitions a first discharge port for discharging the gas into the aqueous solution and a second discharge port for discharging the gas into the space outside the aqueous solution. Item 1. A fire extinguishing equipment according to item 1. The first discharge port is a tip opening of the tubular portion,
The said 2nd discharge port is an opening divided by the side wall of the said tubular part, The foam fire-extinguishing equipment of Claim 2 characterized by the above-mentioned. The gas supply device includes a gas container that contains the gas, and a tubular member that supplies the gas from the gas container to the inside of the extinguishing agent container,
The tubular part of the fire extinguisher container is constituted by a tip part of the tubular member,
The foam extinguishing equipment according to claim 2 or 3, wherein the tubular member is formed with a pressure adjusting portion for reducing the diameter of the gas flow path. The foam fire-extinguishing equipment according to any one of claims 1 to 4,
A cable tray having a vertical portion extending in a vertical direction;
A cable disposed along the vertical portion of the cable tray, and
The foam nozzle discharges foam toward the vertical portion of the cable tray.

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