JPH06165837A - High-expansion foam fire extinguisher for local use - Google Patents

Abstract

PURPOSE:To provide a fire extinguisher for local use which has no danger on human lives, does not shield a visual field and can execute efficient fire extinguishment with a fire extinguishing system for local fires in the engine room of a ship, etc. CONSTITUTION:A foaming device 4 for high-expansion foams installed above or near the point in the ship, etc., where the fire is liable to break out, a tank 5 into which a fire extinguishing liquid for foaming, a water supplying means which consists of a water tank 6 and a water feed pump 7, etc., and a mixing device 9 for the fire extinguishing liquid and water are connected by piping 10, 11, 17, 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher for a local fire such as an engine room of a ship. The fire scale is larger than that of a hand-held fire extinguisher. In order to use a fire extinguisher for extinguishing an entire fire in an engine room or the like, it is intended for a local fire such as a small fire.

[0002]

2. Description of the Related Art As a conventional technique of this kind, there is a technique for extinguishing fire by ejecting halon gas from a cylinder of halon gas toward a local fire source in the vicinity of the fire source. Fire extinguishing by spraying or low expansion foam is also considered.

[0003]

However, in the conventional fire extinguishing with halon gas, the use of halon gas is prohibited due to environmental problems, and it cannot be used. Further, powder fire extinguishing has a problem that it is difficult to confirm extinction because the field of view is blocked by the powder used for extinguishing the fire, and the entire room such as the engine room is contaminated by the powder.

Further, the water spray has a problem that it is difficult to extinguish a fire when it is used for an oil fire and there is a fear of re-ignition. Furthermore, extinguishing low-expansion foam is suitable for floor fires such as oil fires in combing, but is not suitable for fires with three-dimensional parts such as oil purifiers, and its low expansion ratio However, there was a problem that the amount of water used increased.

[0005]

In order to solve the above-mentioned problems, in the present invention, a foaming device for high expansion foam, which is installed above or in the vicinity of a fire-prone portion of a ship or the like, A high expansion foam fire extinguisher for local use is constituted by a tank containing a foaming fire extinguishing liquid, a water supply means, a mixing device of the fire extinguishing liquid and water, and a pipe connecting them.

A part of the foamer, the pipe and the valves may be shared with the foamer, the pipe and a part of the high expansion foam fire extinguisher for extinguishing the entire engine room. .

[0007]

[Function] As described above, by installing the high expansion bubble foamer in a place where a fire is likely to occur, even if a fire occurs, the foam installed above this place will be maintained while the fire area is local. High expansion foam can be foamed from the vessel to cover the fire area with high expansion foam to extinguish the fire.

Since the device of the present invention uses a foaming device of high expansion foam, even if it is used in a closed area such as an engine room, it does not obstruct the view like powder fire extinguishing and extinguishes while confirming the extinguishing condition. it can. Further, it is possible to stain less than the range of the powder scattered by the fire extinguishing of the powder. And, compared with fire extinguishing with water spray, fire extinguishing suitable for oil fire can be performed. That is, in the case of fire extinguishing with water spray, it is difficult to extinguish when exceeding the range of water spray, but with high expansion bubbles, the bubbles flow and spread, so wide range extinguishing is possible. Also, since the oil surface is covered with bubbles even after the fire is extinguished, there is no danger of re-ignition like water spray.

A high expansion foam (expansion ratio of several tens to 1000 times that of a liquid) requires less water consumption than a low expansion foam (expansion ratio of up to about 20 times that of a liquid) and has a large expansion amount. Because there are many,
You can also extinguish a three-dimensional object by covering it while running down from above. Therefore, not only fire extinguishing on the floor but also three-dimensional objects such as oil purifiers are more effective. High-expansion foam does not pose a danger to the human body like carbon dioxide fire extinguisher, so it is suitable for local fire extinguishing when there are people nearby, and the appearance of fire extinguishing can be seen. It can be adjusted and appropriate fire fighting can be done.

Further, as a fire extinguisher of the present invention, a foaming machine is arranged in several fire target areas, pipes and valves are arranged so as to selectively foam, and a fire extinguishing liquid tank and, if necessary, a dedicated water By having one set of each tank, it is possible to provide an inexpensive and simple fire extinguisher capable of coping with a local fire.

Further, a part of the foamer, piping and valves of the high expansion foam extinguishing apparatus for local use of the present invention is a part of the foamer, piping and valves of the high expansion foam extinguishing apparatus for extinguishing an entire engine room or the like. If the fire extinguishing device is shared with the fire extinguisher, the cost can be further reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, 1 is a floor surface of a place where a fire easily occurs (for example, an engine room of a ship), 2 is a ceiling surface thereof, and 3 is an oil cleaner installed on the floor surface 1.

FIG. 1 shows an embodiment of the present invention. In this embodiment, a high expansion bubble is provided above or in the vicinity of a place where an oil purifier 3 is installed in an engine room where a fire is likely to occur. A required number (four in this embodiment) of foaming devices 4 are installed, and a water supply pump 7 for supplying water from a fire extinguishing liquid tank 5 and sea water or a water tank 6 into which the necessary foaming extinguishing liquid is placed.
Alternatively, the water supply means such as the miscellaneous water supply pipe 8 in the ship and the mixing device 9 of the fire extinguishing liquid and water are connected by a pipe to form a high expansion foam extinguisher for local use.

Reference numeral 10 is a pipe for supplying seawater, and 11 is a water supply pump 7.
Is a pipe for water supply connected to the discharge side of. This may be replaced by the pipe 8 for supplying miscellaneous water. Reference numeral 12 is a water supply valve inserted in the pipe 11, and 13 is a pressure gauge. Reference numeral 14 is a pipe for supplying miscellaneous compressed air in the ship, which is connected to the fire extinguishing liquid tank 5 via an on-off valve 15 and a pressure reducing valve 16. Reference numeral 17 is a pipe for supplying the fire-extinguishing liquid connected to the fire-extinguishing liquid tank 5, and 18 is an orifice inserted in the middle thereof, and this pipe 17 is combined with a pipe 11 for supplying water to form a mixing device 9. . Mixing device 9
The discharge-side pipes 19 are connected to the respective foaming devices 4.

FIG. 2 shows the detail of the foaming device 4, in the figure.
4a is a nozzle connected to the pipe 19, 4b is a disk holding the nozzle 4a at the center, 4c is a hollow cylindrical body connected to the disk 4b via a support rod 4d, and 4e is a body 4c. A conical foam net provided on the discharge side, and 4f are fixing brackets projecting from the body 4c.

FIG. 3 shows another embodiment of the present invention, in which the same reference numerals as those used in the drawings denote the same elements. In this embodiment, a water tank 20 dedicated to the fire extinguisher is provided, and the pipe 14 for supplying the compressed air for miscellaneous use in the ship described above is connected to the tank 20 via the opening / closing valve 15 and the pressure reducing valve 16, and the water tank 20 Water is discharged using the pressure of compressed air. Reference numeral 21 is a discharge valve inserted in the pipe 19.

FIG. 4 shows another embodiment of the present invention. In the figure, the same reference numerals as those used in the drawings denote the same elements. In this embodiment, a high expansion foam extinguisher for extinguishing an entire engine room or the like, which is composed of the foamer 4 and the pipe 19 and a part of the valves shown in FIG. It is intended to be shared with.

By installing the high-expansion foam foamer 4 in a place where a fire is likely to occur, as described above, even if a fire occurs, it may be located above or near this place as long as the fire range is local. It is possible to extinguish a fire by covering the fire spot with a foam having a high expansion by foaming the high expansion foam 24 from the installed foaming device 4.

[0019]

Since the device of the present invention uses the foaming device 4 having a high expansion bubble, even if the device is used in a closed area such as an engine room, the field of view can be confirmed without obstructing the field of view like powder fire extinguishing. You can extinguish the fire while. Further, it is possible to stain less than the range of scattering of the powder due to extinguishing the powder. And, compared with fire extinguishing with water spray, fire extinguishing suitable for oil fire can be performed. That is, in the case of fire extinguishing with water spray, it is difficult to extinguish when exceeding the range of water spray, but with high expansion bubbles, the bubbles flow and spread, so wide range extinguishing is possible. Also, since the oil surface is covered with bubbles even after the fire is extinguished, there is no risk of re-ignition unlike water spray.

High expansion foam 24 (several tens to 1000 times expansion ratio of liquid) is low expansion foam (expansion ratio up to about 20 times of liquid).
As a result, the amount of water used is small and the amount of foaming is large, so even three-dimensional objects can be extinguished by covering them while running down from the top.
Therefore, not only fire extinguishing on the floor but also three-dimensional objects such as the oil cleaner 3 are more effective. Also, since the high expansion bubble 24 does not pose a danger to the human body like a carbon dioxide fire extinguisher, it is suitable for initial local fire extinguishing when there are people around, and the state of extinguishing can be seen. Can be adjusted,
Can perform appropriate fire fighting activities.

Further, as the fire extinguisher of the present invention, the foaming device 4 is arranged in several fire target areas, the pipes and valves are arranged so as to selectively foam, and the fire extinguishing liquid tank 5 and, if necessary, the fire extinguishing liquid tank 5 are arranged. By having one set of each dedicated water tank 6, it is possible to provide an inexpensive and simple fire extinguisher capable of coping with a local fire.

Further, for extinguishing the whole of the engine room, etc., which comprises the foamer 4 of the high-expansion foam extinguisher for local use of the present invention, the pipe 19 and a part of the valves, and the system of the stationary pipe 22 and a part 23 of the valves. If it is shared with the high-expansion foam extinguishing system, it is possible to further reduce the cost of the extinguishing system.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the device of the present invention.

FIG. 2 (a) is a side view of the foaming machine, and FIG. 2 (b) is a front view seen from the nozzle side.

FIG. 3 is an explanatory view showing another embodiment of the device of the present invention.

FIG. 4 is an explanatory view showing still another embodiment of the device of the present invention.

[Explanation of symbols]

 1 Floor surface where fire is likely to occur 2 Ceiling surface 3 Oil purifier 4 Foamer 5 Fire extinguishing liquid tank 6 Water tank 7 Water supply pump 8 Piping 9 Mixing device 10, 11 Piping 12 Water supply valve 13 Pressure gauge 14 For supplying compressed air for chores Piping 15 Open / close valve 16 Pressure reducing valve 17 Piping 18 Orifice 19 Piping 20 Water tank 21 Discharge valve 22 Piping 23 valve 24 High expansion foam

Claims (2)

[Claims] 1. A foaming device for high expansion foam, which is installed above or in the vicinity of a fire-prone portion of a ship or the like, a tank for containing a fire-extinguishing liquid for foaming, a water supply means, and a fire-extinguishing system. A high-expansion foam extinguisher for local use consisting of a liquid / water mixing device and piping connecting them. 2. The foamer, a part of the piping and the valves according to claim 1 are also used as the foamer, a part of the piping and the valves of a high expansion foam extinguisher for extinguishing an entire engine room or the like. High-expansion foam extinguisher for local use characterized by.