JP2015208640A - 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 including a foam nozzle capable of efficiently feeding fire-extinguishing foam to a long member, as a fire-extinguishing object, extending in a substantially horizontal direction.SOLUTION: The fire-extinguishing apparatus includes a foam nozzle that is comparted into a hollow part, and discharge outlets for discharging an aqueous solution including fire-extinguishing foam, supplied in the hollow part, to the outside in a foam form. In a state where the foam nozzle is disposed upward in the vertical direction with respect to a long member extending in a substantially horizontal state, when viewing the foam nozzle from a vertically upper side, the discharge outlets are so comparted as to discharge the foam in a direction along the long member.

Description

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

  Conventionally, for fire extinguishing equipment, it is obliged to provide fire extinguishing equipment according to the fire prevention object based on the provisions of the Fire Service Act. For example, in a parking lot or the like, there is known a foam fire extinguishing facility that discharges bubbles in a substantially conical shape from a ceiling to a floor surface. Further, Patent Document 1 discloses a foam fire extinguishing facility that discharges bubbles toward a floor surface from a sprinkler head provided on the ceiling side in a warehouse for rubber products and plastic products.

JP 2007-252637 A

  By the way, in recent years, installation of fire extinguishing equipment may be required even for facilities that did not require fire extinguishing equipment in the past, but depending on the shape and installation location of the object, conventional fire prevention equipment is used. There are times when you can't.

  In particular, when installing a fire extinguishing equipment for a long member extending in a substantially horizontal direction, such as a long cable tray holding a cable, it has a substantially conical shape like the foam nozzle of a conventional foam fire extinguishing equipment. In the case of discharging fire extinguishing bubbles, there is a problem that a wide range of the long member cannot be efficiently covered in a short time.

  In view of the above problems, an object of the present invention is to provide a foam fire extinguisher and a foam fire extinguisher equipped with a foam nozzle capable of efficiently supplying fire extinguishing foam to a long member extending in a substantially horizontal direction as a fire extinguishing target. Is to provide a system.

  The foam fire extinguishing equipment as a first aspect of the present invention includes a foam nozzle that partitions a hollow portion and partitions a discharge port that discharges an aqueous solution containing the foam extinguishing agent supplied to the hollow portion to the outside. When the foam nozzle is viewed from above in the vertical direction in a state where the foam nozzle is disposed vertically above the long member extending in a substantially horizontal direction, the long member It is divided so that a bubble may be discharged in the direction along.

  As one embodiment of the present invention, the foam nozzle includes a main body part that defines the hollow part and the discharge port, and an outer wall of the main body part includes two opposing bottom surfaces and a side surface that connects the two bottom surfaces. It is preferable that the discharge port is provided only on the side surface.

  As one embodiment of the present invention, it is preferable that the main body portion has a columnar outer shape having a substantially semicircular bottom surface or a substantially fan-shaped bottom surface.

  The foam fire extinguishing equipment as one embodiment of the present invention includes a tubular member that supplies the aqueous solution to the foam nozzle, and the foam nozzle defines a flow path that communicates with the hollow portion of the main body, It is preferable that a connection portion connected to the tubular member is provided, and the connection portion is provided on one bottom surface of the main body portion.

  As one embodiment of the present invention, the discharge port includes a first discharge port that discharges the aqueous solution in a substantially horizontal direction, a second discharge port that discharges the solution in a substantially vertical downward direction, a substantially horizontal direction and a substantially vertical downward direction. A third discharge port that discharges in an oblique direction that is between the first discharge port and the third discharge port along the elongated member when the foam nozzle is viewed from above in the vertical direction. It is preferable that bubbles are released in the direction.

  The foam fire extinguishing equipment as one embodiment of the present invention includes a fire extinguishing agent container that contains the aqueous solution and supplies the aqueous solution to the foam nozzle, a gas supply device that supplies gas to the inside of the fire extinguishing agent container, Is preferably further provided.

A foam fire extinguishing system as a second aspect of the present invention includes a foam having a foam nozzle that partitions a hollow portion and defines a discharge port that discharges an aqueous solution containing the foam extinguishing agent supplied to the hollow portion to the outside. Fire extinguishing equipment,
A plurality of fire extinguishing objects extending in the horizontal direction provided in a plurality at a predetermined interval in the vertical direction, the foam nozzle is disposed between the fire extinguishing objects, and the discharge port is When the foam nozzle is viewed from above in the vertical direction, the foam nozzle is partitioned so that bubbles are discharged in the extending direction of the fire extinguishing object.

  According to the present invention, it is possible to provide a foam fire extinguishing equipment and a foam fire extinguishing system including a foam nozzle capable of efficiently supplying fire extinguishing foam to a long member extending in a substantially horizontal direction as a fire extinguishing target. it can.

It is a figure which shows the foam fire extinguishing system provided with the foam fire extinguishing equipment which is embodiment of this invention, and foam fire extinguishing equipment. It is a figure which shows the fire extinguisher container in the foam fire extinguishing equipment shown in FIG. It is a figure which shows the detail of the foam nozzle in the foam fire extinguishing equipment shown in FIG. It is a figure which shows the detail of the foam nozzle different from the foam nozzle shown in FIG. 3 as a foam nozzle applicable to the foam fire extinguishing equipment shown in FIG. It is a figure which shows the foam nozzle different from the foam nozzle shown in FIG.3 and FIG.4 as a foam nozzle applicable to the foam fire extinguishing equipment shown in FIG.

  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 in a limited space, a long fire extinguishing object extending in the horizontal direction, and provided in a plurality at a predetermined interval in the vertical direction. . More specifically, the foam fire-extinguishing system 100 shown in the present embodiment includes a foam fire-extinguishing equipment 1, a plurality of cable trays 2 that are provided in the vertical direction at predetermined intervals and extend in the horizontal direction, and the cable tray 2. And a cable 3 placed on the upper surface. In the foam fire extinguishing system 100, the cable 3 is a long fire extinguishing object extending in the horizontal direction.

  The foam fire extinguishing equipment 1 includes a foam nozzle 7 that discharges foam to the cable 3 placed on the vertical upper surface 50 of the cable tray 2 as a fire extinguishing target. The foam nozzle 7 defines a hollow portion 29 and a discharge port 30 that discharges the aqueous solution W containing the foam extinguishing agent supplied to the hollow portion 29 to the outside. Further, in the foam fire-extinguishing system 100, the foam nozzle 7 is disposed between the plurality of fire extinguishing objects, and the discharge port 30 extends the fire extinguishing object when the foam nozzle 7 is viewed from above in the vertical direction. The foam nozzle 7 is partitioned so as to release bubbles in the direction. More specifically, in the foam fire-extinguishing system 100 according to the present embodiment shown in FIG. 1, the foam nozzle 7 is disposed between the plurality of cable trays 2, and the discharge port 30 extends the foam nozzle 7 from above in the vertical direction. When viewed, the inside of the width of the cable tray 2 is partitioned so that bubbles are discharged only in the long direction as the extending direction of the cable tray 2 and a limited width.

  Hereinafter, each of the foam fire extinguishing equipment 1 as an embodiment of the present invention and the foam fire extinguishing system 100 including the foam fire extinguishing equipment 1 will be described in detail.

<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 of the fire extinguishing target 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 tubular member 12 with respect to the distal end portion constituting the tubular portion 8 described above. 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 of the fire extinguishing target. 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 extinguisher 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. 1, and is a cable tray as a long member extending in a substantially horizontal direction. Bubbles are discharged toward the cable tray 2 and the cable 3 in a state of being arranged vertically above the cable 2 and the cable 3.

  3A to 3C are views showing the foam nozzle 7. The foam nozzle 7 in the present embodiment includes a main body portion 60 having a columnar outer shape that defines the hollow portion 29 and the discharge port 30, and a connection portion 61 connected to the distal end portion of the tubular member 15. The connecting portion 61 defines a flow path 62 that communicates with the hollow portion 29 of the main body portion 60. 3A shows the case where one bottom surface 63b of the main body 60 having a columnar outer shape is viewed from the horizontal direction, and FIG. 3B shows the side surface 64 of the main body 60 viewed from the horizontal direction. Indicates the case. FIG. 3C shows a case where the side surface 64 of the main body 60 is viewed from below in the vertical direction.

  As shown in FIGS. 3A to 3C, the outer wall of the main body 60 in the present embodiment is composed of two opposing bottom surfaces 63a and 63b and a side surface 64 that connects the two bottom surfaces 63a and 63b. ing. As shown in FIGS. 3A to 3C, the main body portion 60 defines the hollow portion 29 (the space inside the broken line in FIG. 3A) and fire extinguishing foam supplied to the hollow portion 29. A discharge port 30 for discharging bubbles of the aqueous solution W containing the agent is defined. Here, the discharge port 30 in the present embodiment is provided only on the side surface 64 of the main body 60, and is not provided on the two bottom surfaces 63a and 63b.

  More specifically, the discharge port 30 of the present embodiment is provided only from the side facing the horizontal direction of the side surface 64 to the surface facing the lower side in the vertical direction. It is not provided on the surface facing the. This is because the foam nozzle 7 in the present embodiment uses a long member extending in a substantially horizontal direction as a fire extinguishing target, and is disposed vertically above the long member.

  Further, as shown in FIG. 3A, the discharge port 30 of the present embodiment includes a first discharge port 65 that discharges the aqueous solution W in a substantially horizontal direction, and a second discharge port 66 that discharges the solution in a substantially vertical downward direction. And a third discharge port 67 for discharging in an oblique direction between the substantially horizontal direction and the substantially vertical downward direction. Accordingly, the fire-extinguishing foam discharged from the discharge port 30 is approximately 180 from the horizontal direction to the lower side in the vertical direction when one bottom surface 63a or 63b of the main body 60 is viewed from the horizontal direction (see FIG. 3A). Radiated over a range of degrees central angle. Further, as described above, since the discharge ports 30 are not provided in the bottom surfaces 63a and 63b, the fire extinguishing bubbles discharged from the discharge ports 30 are fire extinguishing objects when the foam nozzle 7 is viewed from above in the vertical direction. Within the width of the long member (for example, the inside of the tray width), it is discharged in a substantially straight line in the direction along the long member (the long direction of the long member). Accordingly, when the foam nozzle 7 is viewed from above in the vertical direction with respect to the long member extending in the substantially horizontal direction, the fire extinguishing foam is not discharged from the first. From the outlet 65 and the third discharge port 67, the inner width of the long member is discharged linearly in the direction along the long member.

  Note that a plurality of first discharge ports 65, second discharge ports 66, and third discharge ports 67 of the present embodiment are formed. Specifically, the first discharge port 65 of the present embodiment is formed in two opposing vertical planes of the side surface 64, and four first discharge ports 65 are provided in each vertical plane. In addition, the second discharge ports 66 of the present embodiment are formed on six inclined surfaces having an angle with respect to the vertical direction and the horizontal direction in the side surface 64, and four second discharge ports 66 are provided on each inclined surface. Is provided. Further, the third discharge port 67 of the present embodiment is formed in a horizontal plane on the lower side in the vertical direction of the side surface 64, and twelve third discharge ports 67 are provided on the horizontal plane.

  The connecting portion 61 in this embodiment is provided not on the side surface 64 but on one bottom surface 63b, and the distal end portion of the tubular member 15 that supplies the aqueous solution W to the foam nozzle 7 is connected to the connecting portion by fastening means such as bolts and nuts. 61 is screwed and fixed to the connecting portion 61. Although the connection part 61 of this embodiment is provided in one bottom face 63b, the structure provided in the side surface 64 is also possible. However, in this embodiment, since the connection part 61 is provided in the one bottom face 63b, the aqueous solution W which flows in into the hollow part 29 from the connection part 61 collides with the inner wall by the side of the other bottom face 63a. Therefore, turbulent flow occurs in the hollow portion 29, and the aqueous solution W is stirred in the hollow portion 29. The stirred aqueous solution W is then discharged outward from the discharge port 30 provided on the side surface 64. That is, when the connection portion is provided on the bottom side as in the present embodiment, the aqueous solution is further stirred in the hollow portion of the main body portion as compared with the configuration in which the connection portion is provided on the side surface side. The fire-extinguishing foam discharged from the discharge port can be released in a higher foamed state.

  Further, as shown in FIGS. 3A to 3C, the main body 60 in the present embodiment has a columnar shape having substantially semicircular bottom surfaces 63a and 63b in which horizontal lines and vertical lines are connected by a plurality of oblique sides. However, the present invention is not limited to this shape. The main body 60 in the present embodiment is configured so as to be able to discharge bubbles substantially linearly in two directions from the main body 60 when the foam nozzle 7 is viewed from above in the vertical direction. For example, FIG. It is good also as a foam nozzle 70 provided with the main-body part 90 and the connection part 91 as shown to (a)-(c).

  The foam nozzle 70 shown in FIG. 4 is configured to be able to discharge bubbles in a substantially straight line from the main body 90 only in one direction when viewed from above in the vertical direction. Specifically, as shown in FIGS. 4A to 4C, the foam nozzle 70 is capable of emitting bubbles radially over a range of a central angle of about 90 degrees from the horizontal direction to the vertical direction. A discharge port 92 is defined. More specifically, the outer wall of the main body 90 is composed of two opposing substantially fan-shaped bottom surfaces 93a and 93b and a side surface 94 connecting the two bottom surfaces 93a and 93b. It is provided only on the side surface 94 of 90, and is not provided on the two bottom surfaces 93a and 93b. Further, the connecting portion 91 is provided on the side surface 94, unlike the foam nozzle 7 shown in FIG.

  Furthermore, instead of the foam nozzle 7 of the present embodiment, a foam nozzle 700 as shown in FIG. 5 may be used. The foam nozzle 700 shown in FIG. 5 is different from the foam nozzle 7 of this embodiment in the shape of the discharge port of the main body. The discharge port 702 provided in the main body 701 of the foam nozzle 700 is partitioned by a substantially cylindrical nozzle tip 703. By setting the discharge port of the foam nozzle in such a configuration, the directivity in the discharge direction and the discharge pressure of the fire extinguishing bubbles discharged outward from the discharge port 702 can be increased, and a long fire extinguishing object It is possible to increase the accuracy of foam discharge along the extending direction. A foam nozzle 700 shown in FIG. 5 is a nozzle with a long screw having a hole as the nozzle tip 703.

  Here, the material of the main body portion 60 and the connection portion 61 of the foam nozzle 7 of the present embodiment is stainless steel, and the main body portion 60 and the connection portion 61 are integrally formed. For example, a plurality of stainless plate materials are used. It is also possible to form the foam nozzle by connecting with fastening means such as bolts and nuts.

[Detector 40]
The detector 40 detects a fire of the fire extinguishing target, a receiver 42 that receives the detection result of the detector, and opens and closes the container valve solenoid 14a described above based on the reception information of the receiver 42. And a controller 43 to be controlled.

  In the foam extinguishing system 100 shown 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 this embodiment, the first discharge port 16 is the tip opening of the tubular portion 8, and the second discharge port 17 is a circumferential side wall of the tubular portion 8. It is an opening partitioned in the upper part.

  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 plurality of cable trays 2 extending in the vertical direction at predetermined intervals, and an upper surface 50 on the upper side in the vertical direction of the cable tray 2. A cable 3 to be placed. The foam fire extinguishing system 100 according to the present embodiment is a long fire extinguishing system that extends a horizontal cable tray 2, particularly a cable 3 arranged along the horizontal multi-stage cable tray 2 in a substantially horizontal direction. It is intended as an object. 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, and has an upper surface 50 extending in a substantially horizontal direction. The cable 3 is placed on the upper surface 50 of the cable tray 2. In particular, the cable tray 2 shown in FIG. 1 is a multi-stage cable tray 2 provided with a plurality of predetermined intervals in the vertical direction, and the intervals in the vertical direction of the cable trays 2 of this embodiment are 200 mm to 250 mm. Degree.

  As shown in FIG. 1, the foam nozzle 7 of the present embodiment is disposed between the plurality of cable trays 2. Therefore, fire extinguishing bubbles can be supplied to the cables 3 placed on the upper surface 50 of each cable tray 2. Further, the discharge port 30 (see FIG. 3 and the like) is configured so that bubbles are discharged in a direction along the cable tray 2 and the cable 3 when the foam nozzle 7 is viewed from above in the vertical direction (see arrows in FIG. 1). The nozzle 7 is partitioned. Therefore, the fire-extinguishing foam emitted from the foam nozzle 7 is emitted along the extending direction of the cable tray 2 and the cable 3, and a certain range of the cable tray 2 can be efficiently covered with the fire-extinguishing foam.

  Here, the width of the cable tray 2 of the present embodiment is 600 mm, and the width between the two bottom surfaces of the foam nozzle 7 is 50 mm. The foam nozzle 7 in the foam fire-extinguishing system 100 of the present embodiment is disposed vertically above the center portion in the width direction of the cable tray 2.

  A horizontal multi-stage cable tray 2 as shown in FIG. 1 is used when wiring is installed in a nuclear facility, for example. In a nuclear facility, even if a fire occurs in the cable 3 as a fire extinguishing target, it is difficult to treat radioactive contaminated water, so it is not preferable to extinguish with a large amount of water. Further, the distance between the cable trays 2 of the multistage cable tray 2 is very narrow, about 200 to 300 mm, and the cables 3 on each cable tray 2 extend in the horizontal direction over several hundred meters. Since there are some, it is not possible to achieve the use of the foam fire extinguishing equipment to spread the fire extinguishing foam over the entire range of the cables 3 of each cable tray 2 with the foam nozzle of the conventional foam extinguishing equipment. On the other hand, if the foam nozzle 7 in this embodiment is used, even if the cable 3 placed on each upper surface 50 of the multi-stage cable tray 2 is used as a fire extinguishing target, the foam nozzle 7 is located above the cable 3 in the vertical direction. If arranged in the vicinity, fire extinguishing bubbles can be efficiently discharged from the discharge port 30 of the main body 60 in the direction along the extending direction of the cable tray 2 and the cable 3, and thus the shape and size of the cable tray 2. It is possible to realize foam extinguishing according to the conditions. Instead of the foam nozzle 7, foam nozzles 70 and 700 as shown in FIGS. 4 and 5 may be used.

  Moreover, the cable 3 mounted on the upper surface of each cable tray 2 may extend over several hundred meters as described above. In such a case, a plurality of foam fire extinguishing facilities 1 shown in FIG. 1 may be arranged along the extending direction of the cable tray 2 and the cable 3.

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

1: Foam extinguishing equipment 2: Cable tray 3: Cable (object to extinguish)
5: Fire extinguisher container 6: Gas feeder 7, 70, 700: 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 29: Hollow part 30, 92, 702: Release port 40: Detector 42: Receiver 43: Controller 44: Detection line 45: Infrared spot type detection sensor 50: Upper surface 60, 90 : Main part 61, 91: Connection part 62: Flow path 63a, 63b, 93a, 93b: Bottom face 64, 94: Side face 65 of main part: First discharge port 66: Second discharge port 67: Third discharge Outlet 100: Foam extinguishing system 703: Nozzle G: Gas W: Aqueous solution containing foam extinguishing agent

Claims (7)

A foam nozzle that divides the hollow portion and divides the discharge port for releasing the aqueous solution containing the foam extinguishing agent supplied to the hollow portion outwardly,
In a state where the foam nozzle is arranged vertically upward with respect to a long member extending in a substantially horizontal direction, the discharge port is formed on the long member when the foam nozzle is viewed from above in the vertical direction. A foam fire-extinguishing system characterized in that it is partitioned so as to release the foam in a direction along the direction. The foam nozzle includes a main body section that defines the hollow section and the discharge port,
The outer wall of the main body is composed of two bottom surfaces facing each other and a side surface connecting the two bottom surfaces, and the discharge port is provided only on the side surface. Foam extinguishing equipment as described in   The foam extinguishing equipment according to claim 2, wherein the main body has a columnar outer shape having a substantially semicircular bottom or a substantially fan-shaped bottom. A tubular member for supplying the aqueous solution to the foam nozzle;
The foam nozzle includes a connection portion that defines a flow path that communicates with the hollow portion of the main body portion and is connected to the tubular member;
The foam extinguishing equipment according to claim 2 or 3, wherein the connection part is provided on one bottom surface of the main body part. The discharge port discharges the aqueous solution in a substantially horizontal direction, a second discharge port that discharges substantially downward in the vertical direction, and an oblique direction between the substantially horizontal direction and the substantially vertical downward direction. A third outlet,
The foam is discharged from the first discharge port and the third discharge port in a direction along the long member when the foam nozzle is viewed from above in the vertical direction. The foam fire-extinguishing equipment as described in any one. A fire extinguisher container for containing the aqueous solution and supplying the aqueous solution to the foam nozzle;
The foam fire extinguishing equipment according to any one of claims 1 to 5, further comprising: a gas supplier that supplies gas into the fire extinguisher container. A foam extinguishing equipment comprising a foam nozzle that divides a hollow part and divides a discharge port that discharges an aqueous solution containing the foam extinguishing agent supplied to the hollow part to the outside;
A plurality of fire extinguishing objects extending in the horizontal direction provided in a plurality at predetermined intervals in the vertical direction,
The foam nozzle is disposed between the plurality of fire extinguishing objects,
The foam fire extinguishing system is characterized in that the discharge port is partitioned into the foam nozzle so that the foam nozzle is discharged in the extending direction of the fire extinguishing object when the foam nozzle is viewed from above in the vertical direction.

Images