JP4980282B2 - High expansion foam fire extinguishing equipment - Google Patents

Description

  The present invention is, for example, a high-expansion foam fire extinguisher that performs a fire extinguishing operation by releasing a fire extinguisher in a foam form in a pit of an oil tank, a culvert of an oil complex, a cabin, a hold, a parking lot, various dangerous goods facilities, etc. It is about.

  The high expansion foam fire extinguishing equipment in this invention is a foaming machine main body formed in a cylindrical housing, a foaming net for generating a fire extinguishing foam provided in a tip opening of the foaming machine main body, A radiating nozzle is provided on the rear end side and discharges the aqueous foam solution toward the foaming net.

  And it is equipment which discharges foam aqueous solution from a radiation nozzle, makes foamed by applying the discharged foam aqueous solution to a foaming net, fills a fire source with foam, and extinguishes suffocation.

In this conventional high expansion foam fire extinguishing equipment, a sufficient space is provided between a foaming net for generating a fire extinguishing foam and a radiation nozzle for discharging the foam aqueous solution to the foaming net.
This is to provide a necessary expansion ratio by providing a sufficient interval so that a large amount of air can be sucked. For this reason, the housing | casing which forms a foaming machine main body needs a certain amount of length.

Further, in order to increase the expansion ratio, the contact area where the aqueous foam solution comes into contact with the foamed net is increased.
In order to increase this contact area, the foam net facing the radiation nozzle is not flat but formed conically or protrudes in a mountain shape at the center of the tip side of the foamer body. The tip is bent into a square shape. (For example, see Patent Document 1)
Japanese Utility Model Publication No. 10762

  As described above, in order to increase the contact area, there is provided a device that does not use a flat foam net and provides a foam net formed by bending the tip of the foam net so as to protrude outward from the opening of the foam machine body. Although it is conceivable, the foamed net that is bent so that it protrudes in the shape of a mountain at the center of the tip side of the foaming machine body protrudes from the foaming machine body, increasing the installation area, and disturbing in normal times. There is a problem.

In order to solve the above problems, the present invention is provided with a foaming machine main body formed in a cylindrical shape, a foam net provided on the front end side of the foaming machine main body, and a rear end side inside the foaming machine main body. A high-expansion foam fire extinguishing equipment comprising a radiating nozzle that discharges a foam aqueous solution toward the foamed mesh body, so that the foamed mesh body does not protrude from the foamer body during normal operation. And a foam net expanding / contracting mechanism for projecting the foam net outwardly from the opening on the front end side of the foaming machine main body when the foam aqueous solution is discharged , and the top of the foam net is The upper net attached to the upper end of the tip opening of the foaming machine main body, and the lower part thereof is composed of the lower net attached to the lower end of the tip opening of the foaming machine main body, Provided at the upper end of the foaming machine main body, An upper hinge mechanism for rotating the upper network, provided at the lower end of the foaming machine body, is a high expansion foam fire-extinguishing system, characterized in that it is composed of a lower hinge mechanism for rotating the lower grid .

  In addition, the foamed mesh body has an upper mesh whose upper part is attached to the upper end of the tip opening of the foamer main body and a lower mesh whose lower part is attached to the lower end of the tip opening of the foamer main body. The foaming net expansion / contraction mechanism is provided at the upper end of the foaming machine main body, and is provided at the upper hinge mechanism for rotating the upper net by a predetermined angle, and at the lower end of the foaming machine main body, This is a high expansion foam fire extinguishing equipment, characterized in that it comprises a lower hinge mechanism that rotates the lower net by a predetermined angle.

  Further, at least one of the upper mesh and the lower mesh of the foamed mesh body is formed in a U-shaped cross section, and has a side net provided vertically on both sides, and the high expansion foam fire extinguishing equipment, It is that.

  In addition, a high-expansion foam fire extinguishing system characterized by having a lock mechanism for fixing the upper net and the lower net at a predetermined angle to the tips of the upper net and the lower net of the foam net. is there.

Under normal conditions, the foamed mesh body can be accommodated and made small, and can be expanded only when the foam aqueous solution is emitted from the radiation nozzle. For this reason, the foam net can be installed in a space-saving manner without protruding from the foaming machine main body.
In addition, it expands in the event of a fire, leaving a sufficient distance between the radiation nozzle and the foamed net, and maintaining a sufficient foaming ratio.

  Embodiments of the present invention will be described based on examples with reference to the drawings.

  In FIG. 1 to FIG. 4, reference numeral 1 denotes a cylindrical foaming machine main body formed of a horizontal rectangular housing. A radiation nozzle 4 that discharges the foam aqueous solution toward the foam net 3 is provided at the end.

The foaming net expansion / contraction mechanism of the foaming net 3 provided in the tip opening 2 of the foaming machine main body 1 has the following configuration.
The foam net 3 is composed of an upper net 5 and a lower net 6, and the upper net 5 is directed outward by a predetermined angle, for example, 45 degrees, by an upper hinge mechanism 7 attached to the upper end surface of the opening 2 of the foaming machine body 1. Further, as shown in FIGS. 5A to 5C, the upper mesh 5 is a lock that supports the lower edge of the lower mesh 6 that has been tilted forward to the lower edge. A mechanism 9 is provided.

The lower net 6 supported by the lock mechanism 9 made of a hook-like engaging member provided at the lower end edge of the upper net 5 of the foam net 3 is as shown in FIGS. 6 (a) to 6 (c) and FIG. A vertically standing rectangular front mesh 6a supported by the lower hinge mechanism 8 so as to be tilted outward by a predetermined angle, for example, around 45 degrees, to the lower hinge mechanism 8, and isosceles on both sides of the front mesh 6a It is constituted by a U-shaped net body provided with a triangular side net 6b.
The side net 6b may be housed inside the foaming machine main body 1.

The U-shaped lower net 6 configured in this way is rotatably attached to the lower end of the tip opening 2 of the foamer main body 1 via the lower hinge 8, but isosceles triangular side net 6b. Is installed so as to be located on the outer side of the casing of the foamer main body 1 when the lower net 6 rotates outward.
Moreover, the upper end part of the front net | network 6a is provided with the coffin hole 10 engaged with the lock mechanism 9 which consists of the hook-shaped engagement member of the upper net | network 5. As shown in FIG.
It should be noted that the length of the oblique side of the side net 6b is set to a length that is in contact with the ceiling surface 1a of the housing when the front net 6a of the lower net 6 is tilted to a predetermined angle, and the length of the front net 6a that stands vertically. Is preferably formed higher than the height of the radiation nozzle 4 that discharges the foam aqueous solution facing the front net 6a.

  The foamed net body 3 configured as described above is installed in the opening 2 on the front end side of the foaming machine body 1 as shown in FIG. The foamed net body 3 composed of the upper net 5 and the lower net 6 is pushed forward from the inside of the casing of the foaming machine main body 1 as shown in FIG.

The upper net 5 and the lower net 6 are provided at the tip opening 2 of the foaming machine body 1 with hinge mechanisms 7 and 8 as shown in FIGS. The lower mesh 6 rotates and tilts outward from the tip opening 2 of the foaming machine body 1, and the upper mesh 5 and the lower mesh 6 are locked at a predetermined angle as shown in FIG. A foam net 3 protruding forward from the front end opening 2 of the machine body 1 can be disposed.
The hinge mechanisms 7 and 8 are attached with bolts and nuts 15 as shown in FIG.

Further, since the lock mechanism 9 made of a hook-like engagement member provided at the tip of the upper net 5 is fitted into the hole 10 provided at the tip of the lower net 6, the foam aqueous solution discharged from the radiation nozzle 4 Even if the water pressure is high, both are in a tightly coupled state, and since the lower net 6 is provided with the side net 6b, no gap is formed between the upper net 5 and the lower net 6, Fixed at an angle.
As described above, the upper net 5 and the lower net 6 are locked at a predetermined angle by the hinge mechanisms 7 and 8 and the lock mechanism 9, and the method is appropriately selected.
In addition, since one end of the side net 6b of the rotated lower net 6 is supported in contact with the ceiling surface of the casing of the foaming machine body 1, the foam net 3 is stable without shaking even if the water pressure of the foam aqueous solution is strong. In addition, since the side net 6b is provided, the aqueous foam solution does not leak from the side holes and can be efficiently foamed.
In addition, the expansion ratio can be increased by increasing the separation distance between the foam net 3 and the radiation nozzle 4.
After the water discharge, it is restored by manually folding the lower net 6 into the casing of the foaming machine main body 1, so that it is not necessary to take a wide installation place.
In the above embodiment, the lower net 6 is formed in a U-shaped cross section, but the upper net 5 may be formed in a U-shaped cross section.
Moreover, although both hinge mechanisms are provided over the upper-lower-end full length of the outer side opening part 2 of the foaming machine main body 1, you may divide | segment into two or more.

A second embodiment will be described with reference to FIGS. As shown in FIG. 8, a cylindrical foaming machine main body 21 formed of a horizontal rectangular casing, and a foaming net body that slides back and forth by a foaming net expansion / contraction mechanism in a casing near the front end side opening 22 of the foaming machine main body 21. 23, and a radiating nozzle 24 that discharges a foam aqueous solution for foam generation toward the foam net 23 is provided on the rear end side of the foaming machine main body 21.
The foamed mesh body 23 is formed into a cylindrical foamed mesh body 23 whose front end central portion 23a protrudes in a square shape and the rear end side is opened, and a roller 25 is disposed at the lower end edge of the opening 23b of the foamed mesh body 23. A rail 26 on which the roller 25 travels is provided at the lower end of the foaming machine main body 21.
The foam net 23 may be a plurality of the above-mentioned character shapes stacked in the vertical direction.
In addition, as shown in FIG. 12, a slit 27 is formed in the center opening of the floor surface of the foaming machine main body 21, and a support rod 28 that slides in the slit 27 is provided in the foam net 23. Is connected to a pipe 29 to which a radiation nozzle 24 is attached, and is configured as a foaming net expansion / contraction mechanism connected to a hydraulic cylinder 30 piston rod 16 that operates by the water pressure of the foam aqueous solution when the foam aqueous solution is discharged.

Since it comprised as mentioned above, foam aqueous solution is discharge | released from the radiation nozzle 24 at the time of a fire. At this time, the aqueous foam solution enters the hydraulic cylinder 30, and the piston in the cylinder extends forward. The center part of the lower end of the foamed mesh body is connected to the support rod 28 attached to the piston rod 16 of the hydraulic cylinder 30 and therefore slides forward together with the support rod 28.
At that time, since the rollers 25 attached to the left and right lower ends of the mesh move along the rail 26 provided on the foaming machine main body 21, the foaming mesh body 23 is easy to slide, and the foaming mesh body 23 is the foaming machine. It projects accurately from the tip opening 22 of the main body 21.
Further, a slit 27 on which the support rod 28 slides is provided at the center of the lower surface of the foaming machine main body 21. By providing the packing 11 and the like, the foam aqueous solution does not leak when the foam aqueous solution is discharged. In the figure, 12 is a main shaft, 13 is a central shaft, and 14 is a cover.

A third embodiment will be described with reference to FIGS.
As shown in FIGS. 14 and 15, the foamed net 33 housed in the front end side of the foaming machine main body 31 formed in a cylindrical shape, and provided on the rear end side inside the foaming machine main body 31, the foamed net 33 FIG. 16 and FIG. 17 show a foam net 33 arranged concentrically at the front end side opening 32 of the foaming machine main body 31 of the high expansion foam fire extinguishing equipment provided with the radiation nozzle 34 for discharging the foam aqueous solution toward As shown in the figure, a substantially S-shaped flange 35 is formed which is bent at the front end side at the end portion and bent outward at the rear end side, and consists of a plurality of cylindrical bodies 37 whose diameters become smaller toward the front end side, A coil spring 36 is disposed between a flange 35 bent inward on the front end side of the cylindrical body 37 and a flange 35 bent outward on the rear end side of the cylindrical body 37 having a small diameter, and a cylindrical body having a small diameter. 37 inside the cylindrical body 37 having a large diameter In Kukoto, constituting the foam network element telescopic mechanism that expands and contracts gradually in shape.
In the figure, reference numeral 38 denotes a fixture for attaching the foamed net 33 to the opening of the foaming machine main body 31.

  Since the foam network expansion / contraction mechanism is configured as described above, the foam network 33 that has received the water discharge pressure of the radiation nozzle 34 when the foam aqueous solution is discharged projects stepwise outwardly due to the water discharge pressure, and the extinguishing agent is foamed It can be generated and discharged to extinguish fires.

As described above, when the foam aqueous solution is discharged from the radiation nozzle 34 in the event of a fire, the foamed net 33 made of a plurality of cylindrical bodies is pushed forward by the water pressure of the discharged foam aqueous solution.
Since the plurality of cylindrical bodies are provided with coil springs at the four corners of the flanges at the end portions and are connected to each other, the foamed mesh body 33 does not project any further if it projects a certain distance.
After the water discharge, the foamed net 33 is automatically stored in the housing without protruding from the opening 32 of the foaming machine body 31 by using the force of returning the coil spring to the original, so that it does not interfere with the normal operation.

It is a side view of the normal time of the foaming machine main body of 1st Example. It is a side view at the time of the operation | movement process of a foaming machine main body same as the above. It is a side view at the time of a fire of the foaming machine main body same as the above. It is a normal front view of the foaming machine main body same as the above. It is a figure which shows the upper net | network of a foaming net body same as the above, Fig. (A) is a front view of an upper net | network, Fig. (B) is a side view of an upper net | network, and Fig. (C) is a top view of an upper net | network. It is a figure which shows the downward net | network of a foaming net body same as the above, FIG. (A) is a front view of a downward net | network, FIG. (B) is a side view, FIG. (C) is a figure which shows a perspective view. It is an enlarged view of a lower hinge mechanism. It is side sectional drawing of the normal time of the foaming machine main body of 2nd Example of this invention. It is a sectional side view at the time of a fire of the foaming machine main body same as the above. It is a front view of the foaming machine main body. It is an enlarged view of the lower part (rail) of the foaming machine main body. FIG. It is an enlarged view of the lower part of the foaming machine main body. It is a side view of the normal time of the foaming machine main body of 3rd Example of this invention. It is a sectional side view at the time of a fire of the foaming machine main body same as the above. It is an exploded front view of a foaming net same as the above. It is a figure which shows the example of attachment of a foaming machine main body and a flange part.

Explanation of symbols

1 Foaming machine body
2 Front opening 3 Foam net 4 Radiation nozzle 5 Upper net 6 Lower net 6a Front net 6b Side net
7 Upper hinge mechanism 8 Lower hinge mechanism 9 Lock mechanism (hook-like engagement member)
10 potholes
21 Foaming machine body 23 Foam net 23a Center of tip
23b Opening 24 Radiation nozzle 25 Tire 26 Rail 27 Slit 28 Support rod 29 Piping 30 Hydraulic cylinder 31 Foaming machine main body 33 Foaming net body 34 Radiation nozzle 35 Flange 36 Coil spring

Claims (3)

A foaming machine main body formed in a cylindrical shape, a foaming net provided on the front end side of the foaming machine main body, provided on a rear end side inside the foaming machine main body, and an aqueous foam solution toward the foaming net A high-expansion foam fire extinguishing facility comprising a radiating nozzle for discharging,
The foaming machine main body is provided with the foaming net so that the foaming machine main body is not protruded from the foaming machine main body, and when the foam aqueous solution is discharged, the foaming net is disposed outward from the front end opening of the foaming machine main body. A foam net expansion / contraction mechanism is provided to make it protrude ,
The foam mesh body has an upper net attached to the upper end of the front end opening of the foamer main body and a lower net attached to the lower end of the front end opening of the foamer main body. Configured,
The foaming net expansion / contraction mechanism is provided at an upper end portion of the foaming machine main body and rotates the upper net, and a lower hinge is provided at the lower end part of the foaming machine main body and rotates the lower net. High expansion foam fire extinguishing equipment characterized by comprising a mechanism . At least one of the upper network or the lower network is formed in a U-shaped cross section, high-expansion foam fire-extinguishing according to claim 1, wherein Rukoto to have a side networks provided vertically on both sides Facility. The high expansion foam fire extinguishing apparatus according to any one of claims 1 to 2 , further comprising: a locking mechanism that fixes the upper net and the lower net at a predetermined angle to the tips of the upper net and the lower net, respectively. .

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