JPH114904A - Fire extinguishing device using highly inflatable foam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly inflatable foam extinguishing device capable of extinguishing fire which breaks out in the engine room of a vessel or an indoor parking lot, rapidly and efficiently. SOLUTION: This highly inflatable foam extinguishing device comprises an extinguishing liquid tank 2 for storing an extinguishing liquid, an extinguishing liquid pump 5 for sending the extinguishing liquid from the tank 2, a water pump 2 for sending water to be mixed with the extinguishing liquid, a mixing device 4 for mixing the extinguishing liquid with water, a bubbling unit 8 for generating a bubble for extinguishing fire from a mixture of the extinguishing liquid and water prepared by the mixing device 4 and an air blowing means with an air blower 6 for sending an air for generating the foam using the foaming unit 8. A spot intended for extinguishing the fire is caused to communicate with its outside through the air blowing means with the air blower 6, and the air blower 6 is arranged at an opening part on the outside of the air blowing means. At the same time, the bubbling unit 8 is arranged near the opening part on the side of a spot intended for extinguishing the fire of an air duct 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing device for a fire in an engine room of a ship, an indoor parking lot, or the like.

[0002]

2. Description of the Related Art As such a fire extinguishing device, there are, for example, a device using fire extinguishing with powder and a device using water spray. However, powder fire extinguishing has problems such as difficulty in checking fire extinguishing because visibility is obstructed by the powder used for fire extinguishing. In addition, it is difficult to extinguish oil fire in the case of water spray. was there.

[0003] For this reason, a high-expansion foam fire extinguishing device that extinguishes a fire with a foamed fire extinguishing liquid has been proposed. This equipment mixes a fire extinguishing liquid and water, foams this mixture using an air blower using a foaming machine to generate high-expansion foam, and discharges the foam to a fire occurrence location to extinguish the fire Is what you do.

In such a fire extinguisher, for example, when a fire extinguishing point has a multi-layer structure such as an engine room of a large ship, even if foam is discharged from the upper part to the fire extinguishing point, heat generated during a fire Due to the updraft, it is not possible to quickly fill the entire target area with foam, and fire extinguishing may not be effective. Therefore, it is necessary to connect the foaming machine and the fire extinguishing target with a duct, and to send the foam generated by the foaming machine to the fire occurrence location through the duct using the pressure obtained by the blower. For example, 1974SOLAS (Marine Life Safety) (Convention) requires the installation of foam supply ducts for high expansion foam fire extinguishing systems used in the engine room of ships.

[0005]

However, in such a conventional apparatus, since the distance from the foaming machine to the fire place becomes long, it is difficult to effectively send the foam of the fire extinguishing liquid. Further, in order to prevent the bubbles from being crushed while moving in the duct, there is a problem that the feeding speed of the blower must be reduced, and for that purpose, the cross-sectional area of the duct must be increased.

SUMMARY OF THE INVENTION An object of the present invention is to propose a fire extinguisher using high expansion foam for extinguishing a fire in an engine room of a ship, an indoor parking lot, or the like, which solves the above-mentioned problems.

[0007]

According to the present invention, there is provided a fire extinguishing liquid storage means for storing a fire extinguishing liquid, a fire extinguishing liquid transport means for sending a fire extinguishing liquid from the fire extinguishing liquid storage means, and a water transport for sending water mixed with the fire extinguishing liquid. Means, a mixing means for mixing the fire extinguishing liquid and water, a foaming means for generating a high expansion foam for fire extinguishing from a mixture of the fire extinguishing liquid and water mixed by the mixing means, and a foam generating means for the foaming means Blower means including a blower for sending air for performing, one opening of the blower means at a fire extinguishing target location,
In the high-expansion foam fire extinguisher in which the other opening is provided outside thereof to communicate the fire extinguishing target portion and the outside thereof and the blower is arranged at the opening on the outside of the blowing means, It is characterized in that it is arranged near the opening on the side of the fire extinguishing target of the blowing means.

In the present apparatus, the fire extinguishing point and the outside thereof are communicated by a blowing means, and a foaming means for generating a foam of a fire extinguishing liquid is disposed near an opening of the blowing means on the fire extinguishing point side. Air is sent using a blower provided at the opening on the outer side of the blowing means, and high expansion bubbles are generated in the foaming machine by this and the fire extinguishing liquid, and the foam generated by the foaming machine is further generated by the pressure generated by the blower. It is to be sent to the fire location. Therefore, the moving distance of the foam is short, and the foam can be effectively sent to the place where a fire has occurred. In addition, the speed of sending air by the blower can be relatively increased, and the sectional area of the opening of the blowing means can be reduced.

[0009]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a high-expansion foam fire extinguisher according to the present invention. In this figure, an engine room R at the bottom of a ship S is set as a fire extinguishing target. The apparatus 1 includes a fire extinguishing liquid tank 2, a water pump 3, a fire extinguishing liquid and water mixer 4, a fire extinguishing liquid pump 5, a blower 6, a blow duct 7, and a foaming machine 8. The foaming machine 8 includes a nozzle 9 and a foaming net 10, and the nozzle 9 is connected to the mixer 4 by a pipe 11.

The ventilation duct 7 communicates from the deck of the ship S to the engine room R, and a blower 6 is provided at an opening on the deck side. Further, a foaming machine 8 is provided at the opening on the engine room R side.

Water supplied by a water pump 3 for pumping seawater from the sea surface through a water supply pipe (not shown) and a fire extinguishing liquid supplied by a fire extinguishing liquid pump 5 from a fire extinguishing liquid tank 4 are mixed by a mixer 4 and passed through a pipe 11. It is transferred to the nozzle 9. The mixture of the water and the fire extinguishing liquid ejected from the nozzle 9 forms a foam when passing through the foam net 10 together with the air sent from the blower 6. Since the foam is pressurized by the blower, the foam is developed from the outlet of the foaming machine 8 to a fire extinguishing target.

That is, when a fire occurs in the engine room R, a foam of the fire extinguishing liquid is generated on the spot, and the fire extinguishing liquid can be immediately sent to the fire occurrence location.

In the present apparatus, the sectional area of the blow duct 7 may be set within a range where the pressure loss due to this duct does not exceed the blow pressure of the blower 6. For example, if 200,000 ton tanker, if the time of fire extinguishing have to send approximately 50 m ³ amount of foam per second, the application of the present device to the tanker, the blowing speed of the blower 6
20m / sec, and the cross-sectional area of the ventilation duct 7 is 1.6m × 1.6m
It should just be about. When the foaming machine 8 is arranged near the blower 6 installed at the outside opening of the duct 7 as in the conventional apparatus, and the foam is sent through the duct 7, for example, the blowing speed for preventing the foam from being crushed is 1 m. Assuming / sec, the cross-sectional area of the duct 7 needs to be approximately 7 m × 7 m.

FIG. 2 shows another embodiment of the high-expansion foam fire extinguisher according to the present invention. In this drawing, a single-layered room R ', for example, a vehicle deck of a small ferry boat is set as a fire extinguishing target. I have. This apparatus 1 'includes a fire extinguishing liquid tank 2', a water pump 3 ', a fire extinguishing liquid and water mixer 4', a fire extinguishing liquid pump 5 ', a blower 6', and a foaming machine 8 '. The foaming machine 8 'includes a nozzle 9' and a foam net 10 ', and the nozzle 9' is connected to the mixer 4 'by a pipe 11'.

In the example of FIG. 2, since the fire extinguishing target chamber R 'has a single-layer structure, it is not always necessary to provide a ventilation duct as in the example of FIG.

In the fire extinguisher according to the present invention shown in FIGS. 1 and 2 described above, the foaming machine 8 (and 8 ') includes, for example, Japanese Patent Application Laid-Open No. 6-16 filed by the applicant of the present invention.
What is described in the 5837 gazette is applicable. The foaming machine 8 in this case can be arranged, for example, as shown in FIG.
In the figure, a foaming machine 8 includes a nozzle 8a connected to a pipe 11,
It has a disk 8b holding a nozzle 8a, a body 8c, a support rod 8d connecting the disk 8b and the body 8c, and a foam net 8e, and is fitted into the duct 7.

[0018]

As described above, the high expansion foam fire extinguisher according to the present invention has a foaming machine installed at a fire extinguishing target,
In the event of a fire, foam for fire extinguishing can be generated on the spot and immediately sent to the fire location. Therefore, a quick and efficient fire extinguishing operation can be performed.

Further, in the present apparatus, since the sectional area of the air duct can be made relatively small, the installation is easy.

The present invention is not limited to the illustrated example. For example, in the case of a fire, such as in an indoor parking lot or a basement of a building, a multilayer in which the rapid filling of the fire extinguishing solution with bubbles is impeded. It can be applied to (high-rise) structures. In this case, it is possible to adopt a configuration in which water is supplied from a water tank installed on the roof of the building or on the site.

The present invention can be applied not only to the above-mentioned multi-layer structures such as large ships and indoor parking lots, but also to low-rise or single-rise buildings that do not necessarily require a long ventilation duct. Is also possible.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a configuration in a case where a high-expansion foam fire extinguisher according to the present invention is applied to an engine room at the bottom of a ship.

FIG. 2 is a diagram schematically showing a configuration in a case where the high-expansion foam fire extinguisher according to the present invention is applied to a single-layer facility.

FIG. 3 is a diagram schematically illustrating a foaming machine used in the present apparatus and an example of installation thereof.

[Explanation of symbols]

 1, 1 'fire extinguisher 2, 2' fire extinguishing fluid tank 3, 3 'water extinguishing fluid mixing device 5, 5' extinguishing fluid pump 6, 6 'blower 7 blower duct 8, 8' foamer 9, 9 'Nozzle 10, 10' Foamed net 11, 11 'Piping

Claims (1)

[Claims] 1. A fire extinguishing liquid storage means for storing a fire extinguishing liquid, a fire extinguishing liquid transport means for sending a fire extinguishing liquid from the fire extinguishing liquid storage means,
Water transport means for sending water to be mixed with the fire extinguishing liquid, mixing means for mixing the extinguishing liquid and water, and foaming for producing a high-expansion foam for fire extinguishing from the mixture of the extinguishing liquid and water mixed by the mixing means Means, and a blowing means including a blower for sending air for generating bubbles by the foaming means, wherein one opening of the blowing means is provided at a fire extinguishing target place and the other opening is provided outside thereof. In the high-expansion foam fire extinguisher in which the fire extinguishing target and the outside thereof are communicated with each other and the blower is arranged at an opening on the outer side of the blowing means, the foaming means is an opening on the fire extinguishing target side of the blowing means. A high-expansion foam fire extinguisher characterized by being arranged in the vicinity.