JPH09271526A - Partitioning device for tonnel space upon fire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent enlargement of fire and high temp. region and diffusion of smoke upon generation of fire by dividing a tonnel space into several zones along the lengthwise direction, and arranging flame resistant walls lowering and blocking each zone after the detection of generation of fire, at each zone boundary part. SOLUTION: A tonnel space 1 is divided into several zones 2 along the lengthewise direction, and walls made of flame resistant material for forming each space 3, which descend in the space 1 to block and divide each zone 2 are arranged in a boundary part between the respective zones 2. The wall 4 is demountably supported at its one end onto a ceiling by a retaining unit 7. Upon generation of fire at a spot A, a temp. or smoke sensor 9 detects it to send the signal to a central monitoring pannel 10 to thereby actuate the unit 7. Accordingly the wall 4 is turned downward around a support shaft 6 to thereby block each zone 2, preventing diffusion of flame layer, harmful gas or the like to the other zones 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to diffusion of a high temperature region and smoke when a fire occurs in a long corridor or an underground passage in a building, or a tunnel in the field of civil engineering (hereinafter collectively referred to as a tunnel-like space). The present invention relates to a device for partitioning a fire in a tunnel-like space that can prevent the fire and finally extinguish the fire.

[0002]

2. Description of the Related Art In a tunnel in the field of civil engineering in a tunnel-like space, if the tunnel is relatively short, it depends on natural ventilation (without ventilation equipment), but if it is long, ventilation consisting of ducts, fans, etc. Equipment is installed so that outside air is supplied from the center of the tunnel or main points and air is sent to the outlet side for ventilation. On the other hand, similarly in the construction field, when the tunnel-like space is small and there are many outside air openings,
Although it relies on natural ventilation, the actual situation is to install mechanical ventilation equipment in a large space.

When a fire occurs in such a tunnel-like space, if the amount of air blown is small, the smoke from the fire source goes up in the direction opposite to the air blow (fan side), and the high temperature region develops and expands. Sometimes. Particularly, in the case of a long tunnel-like space, since the air is blown over the entire length, the expansion of the high temperature region and the diffusion of the smoke layer pose a serious problem. For this reason, there are problems that it hinders fire fighting activities and rescue activities and leads to the expansion of fire areas.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to prevent a fire area and a high temperature area from expanding or to prevent smoke from diffusing even if a fire occurs in a tunnel-like space, and to keep it in a limited zone. In view of the above, it is to provide a partitioning device for a fire in a tunnel-like space that does not interfere with fire fighting activities and rescue activities. Another object of the present invention is to provide a fire-time partitioning device for a tunnel-like space that can eventually extinguish a fire by reducing the combustion speed of the fire source.

[0005]

In order to solve the above-mentioned problems, a device for partitioning a fire in a tunnel-like space according to the present invention zones a tunnel-like space along its length, and delimits the boundaries of each zone. Part is equipped with a non-combustible wall member that senses the occurrence of a fire and descends into the tunnel-shaped space, blocks the tunnel-shaped space for each zone, and forms a space partitioned from other zones. When a fire occurs, the non-combustible wall member installed at the boundary of the zone where the fire is occurring is dropped into the tunnel-shaped space and the zone is blocked from other zones. Because it can form a compartmentalized space, it can keep the fire area, high temperature area and smoke layer in the zone, prevent it from spreading and spreading to other zones, and reduce the supply of fresh air. Then It is possible to reduce the burn rate of the source.

Further, in the fire-time partitioning device for a tunnel-like space according to the present invention, a temperature or smoke sensor for detecting a fire is installed on the ceiling for each zone, and the temperature or smoke sensor detects a fire. When the fire occurs, the temperature or smoke sensor senses it when a fire occurs, and the clasp device is used to prevent the noncombustible wall member from falling into the tunnel-shaped space. Since it can be removed and the noncombustible wall member can be lowered into the tunnel-like space,
A zone in which a fire is occurring can be promptly cut off from other zones to form a partitioned space.

Further, in the fire-zone partitioning device for a tunnel-like space according to the present invention, a stopper for actuating the non-combustible wall member by sensing its own heat to lower the non-combustible wall member into the tunnel-like space. It is characterized in that it is supported by a device, and when a fire occurs and the ambient temperature rises, the heat is stopped and the metal device itself detects and removes the support of the noncombustible wall member. Can be dropped into the tunnel-like space, whereby the zone where the fire is occurring can be immediately cut off from other zones to form a partitioned space.

Furthermore, the device for partitioning a tunnel-shaped space during a fire according to the present invention comprises a smoke exhaust fan and a smoke exhaust duct that detect the occurrence of a fire in each zone and operate to discharge smoke to the outside. It is characterized by installing smoke exhaust equipment.By installing smoke exhaust equipment in each zone, the zone where the fire is occurring is blocked to form a partitioned space, and the fire area It is possible to prevent the high temperature region and the smoke layer from spreading and spreading to other zones, and at the same time, to discharge the high temperature gas in the zone to the outside through the smoke exhaust facility.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
4 through FIG. 1 is a configuration diagram of a device for partitioning a fire in a tunnel-like space according to the first embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the device shown in FIG. 1, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a block diagram of a partitioning device for a fire in the tunnel-shaped space, and FIG. 4 is a block diagram of a partitioning device for a fire in the tunnel-shaped space according to the third embodiment of the present invention.

Reference numeral 1 is a tunnel-like space, which is zoned along the lengthwise direction thereof into an appropriate zone 2 in consideration of the cross-sectional area, height and the like. At the boundary of each zone 2, a non-combustible wall member 4 that descends into the tunnel-shaped space 1 when a fire occurs and blocks the tunnel-shaped space 1 for each zone 2 to form a partitioned space 3 is installed. Has been done. This non-combustible wall member 4
Uses a ceiling material forming the ceiling 5, one end of which is rotatably supported by the ceiling 5 via a support shaft 6, and the other end of which is detachably supported by the ceiling 5 via a clasp device 7. Has been done.

The non-combustible wall member 4 is normally held in the state of (a) and forms a part of the ceiling 5, and when a fire occurs, the clasp device 7 is actuated to support the clasp device 7 as will be described later. When it is disengaged, it rotates about the support shaft 6 and descends into the tunnel-shaped space 1 as in the state of (b), and the space 3 divided by dividing the tunnel-shaped space 1 into zones 2 is divided. Are formed. In addition, in a part of the noncombustible wall member 4,
It is convenient to provide a door 8 as shown in FIG. 2 in order to carry in and carry out fire extinguishing equipment and the like during fire fighting activities and rescue activities.

Further, in the tunnel-shaped space 1, a temperature or smoke sensor 9 for detecting a fire on the ceiling 5 for each zone 2 is installed. The detection signal of the temperature or smoke sensor 9 is transmitted to the central monitoring board 10, and when the fire occurs, the clasp device 7 is operated via the central monitoring board 10 and the noncombustible wall member 4 ( It can be lowered into the tunnel-shaped space 1 like the state of (b).

A smoke exhaust port 11 is provided on the ceiling 5 for each zone 2.
A smoke exhaust duct 12 and a smoke exhaust fan 13 are connected to the smoke exhaust port 11, and smoke exhaust equipment for exhausting high-temperature gas containing smoke generated during a fire to the outside can be installed. In this case, the smoke exhaust fan 13 is configured to be operated via the central monitoring panel 10 when a fire is detected by the temperature or smoke sensor 9.

In the tunnel-shaped space 1,
When a fire occurs in the fire source (A) and the heat flow or the smoke layer (B) diffuses in the tunnel-shaped space 1, the temperature or smoke sensor 9 detects this and transmits it to the central monitoring panel 10, and the clasp device 7
Activate The stopper device 7 is activated to operate the noncombustible wall member 4
When the support is removed, the incombustible wall member 4 rotates around the support shaft 6 and descends from the state (a) into the tunnel-shaped space 1 as shown in (b). Is cut off for each zone 2 to form a partitioned space 3.

As a result, the zone 2 where the fire occurred
Becomes a space 3 separated from the other zone 2, and the high temperature gas area and the fire area containing the smoke layer and harmful gas generated by the fire are retained in the zone 2 and the other zone 2
It is possible to suppress the spread and expansion. Therefore, it is possible not to interfere with fire fighting activities and rescue activities. Further, since invasion of fresh air from the outside into the zone 2 is suppressed, the zone 2 is in an oxygen-deficient state, and the air entrained in the combustion part of the fire source (A) is the smoke gas in the zone 2. Therefore, the burning speed of the fire source (A) gradually decreases, and eventually the fire can be extinguished.

It should be noted that the smoke exhaust fan 13 of the smoke exhaust equipment is operated via the central monitoring panel 10 to make the inside of the zone 2 where the fire has occurred a slight negative pressure to balance the air supply amount of the other zones 2. However, by discharging the high-temperature gas containing smoke to the outside through the smoke exhaust port 11 and the smoke exhaust duct 12, it is possible to more effectively suppress the diffusion of the high-temperature gas region to the other zones 2.

Further, in some cases, by constructing a fire-extinguishing gas such as carbon dioxide gas and inert gas in the zone 2 where the fire has occurred, automatically or manually using a sensor, It is possible to effectively extinguish the fire. On the other hand, in the above embodiment, the clasp device 7 is operated via the central monitoring panel 10 by the signal from the temperature or smoke sensor 9, but the clasp device 7 is configured to be able to detect heat by itself. When a fire occurs and the ambient temperature rises to, for example, about 90 °, the heat is stopped by the metal stopper device itself to remove the support of the noncombustible wall member 4,
The noncombustible wall member 4 may be lowered into the tunnel-shaped space 1.

Further, as shown in FIG. 3, the noncombustible wall member 14
Is installed diagonally while being supported by the clasp device 17 in the ceiling 5, and when a fire occurs and the clasp device 17 operates, it slides as it is from the state (a) to the tunnel-shaped space as shown in (b). 1 may be configured to descend, and further, as shown in FIG.
The incombustible wall member 24 is formed of a foldable sheet material as shown in FIG. 2, and is normally stored in the ceiling 5 in a folded state as shown in (a).
When 7 is activated, the tunnel-shaped space 1 will be left as it is (b)
It may be configured so as to hang down as shown by, and even in these embodiments, the same result as that of the first embodiment can be expected.

[0019]

As described above, according to the device for partitioning a fire in a tunnel-like space according to the present invention, when a fire occurs, a noncombustible wall member installed at the boundary of the zone where the fire is occurring. Can be dropped into a tunnel-like space and the zone can be separated from other zones to form a partitioned space, so that the fire area, high temperature area, and smoke layer can be retained in the zone, and fire fighting can be performed. You can make sure that it does not interfere with your activities and relief efforts. In addition, the zone in which a fire is occurring can be divided from other zones to reduce the supply of fresh air, so that the zone becomes deficient in oxygen, and the burning rate of the fire source gradually decreases, The fire can be extinguished soon. Further, since the high temperature gas containing smoke in the zone where the fire is occurring can be discharged to the outside by the smoke exhaust facility, the diffusion to the other zones of the high temperature gas region can be suppressed more effectively.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a fire-time partitioning device for a tunnel-shaped space according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the device shown in FIG.

FIG. 3 is a configuration diagram of a device for partitioning a fire in a tunnel-like space according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a fire-time partitioning device for a tunnel-like space according to a third embodiment of the present invention.

[Explanation of symbols]

 1 Tunnel-shaped space 2 Zone 3 Divided space 4, 14, 24 Non-combustible wall member 5 Ceiling 7, 17, 27 Clasp device 9 Temperature or smoke sensor 11 Smoke exhaust port 12 Smoke exhaust duct 13 Smoke exhaust fan

Claims (4)

[Claims] 1. A tunnel-shaped space is zoned along its length, and at the boundary of each zone, a fire is detected and the zone is lowered into the tunnel-shaped space. A fire-time partitioning device for a tunnel-like space, characterized in that a non-combustible wall member is installed which forms a space partitioned off from other zones by blocking it in the interior. 2. A temperature or smoke sensor for detecting a fire is installed on the ceiling for each zone, and when the temperature or smoke sensor detects a fire, the noncombustible wall member is placed in the tunnel-shaped space. The device for partitioning a fire in a tunnel-like space according to claim 1, further comprising a latch device for lowering the device. 3. The non-combustible wall member is supported by a clasp device which operates by sensing heat of itself and lowers the non-combustible wall member into the tunnel-shaped space. A device for partitioning a fire in the tunnel-like space described. 4. A smoke exhaust facility comprising a smoke exhaust fan and a smoke exhaust duct, which are activated in response to the occurrence of a fire and discharge smoke, is installed in each zone. The device for partitioning a fire in the tunnel-like space according to 1.