JPS63240884A - Fire extinguishing equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to fire extinguishing equipment that uses halogen gas.

(Prior Art) For example, a control panel housing various devices, cables, etc. for controlling a power generation plant is provided with a fire extinguisher that fills the control panel with halogen gas.

FIG. 6 shows a conventional example of such fire extinguishing equipment.

In the figure, a control panel 1 includes a ventilation fan 2 for ventilating and cooling the inside of the panel, a ventilation hole 3 for letting outside air in, and a control panel for detecting that the temperature inside the panel is higher than a predetermined value. A temperature detector 4, a fire detector 5 for detecting the occurrence of a fire inside the panel, and a halogen gas blowout vibro for filling the panel with high-pressure halogen gas are provided.

With the above configuration, when the temperature inside the panel reaches a predetermined value close to the permissible temperature of the equipment housed in the control panel 1, the temperature detector 4 is activated and the ventilation fan 2 is activated. As a result, the control panel 1 is forcedly cooled, and the temperature inside the panel is limited to a permissible temperature or lower.

Here, when a fire occurs in the control panel 1, the fire detector 5 detects it, and as a result, for example, a fire alarm lid sounds, and a person who rushes to the fire alarm manually starts the fire extinguishing equipment.

As a result, high-pressure halogen gas is ejected from the halogen gas ejection vibro, and the control panel 1 is filled with it.

(Problem to be Solved by the Invention) In this way, halogen gas is ejected into the control panel 1, but since the ventilation fan 2 is operating for forced cooling as described above, the halogen gas is ejected into the control panel. Ventilation fan 2
It takes time for the control panel 1 to be filled with halogen gas.

This caused the inconvenience that important equipment housed in the control panel 1 was burnt out and the power generation plant 1 stopped functioning.

In addition, halogen gas is used for a long time (for example, more than 1 minute)
There was also the problem that when exposed to the high heat from a fire, a chemical reaction caused it to turn into toxic gas, posing a danger to humans.

SUMMARY OF THE INVENTION In order to solve the problems of the prior art, it is an object of the present invention to provide a fire extinguishing equipment that can complete initial fire extinguishing in a short time.

[Configuration of the Invention (Means for Solving Problems)] The present invention provides that when a fire occurs and halogen gas is spewed out, the ventilation fan is stopped and the opening is opened with a plastic bag that is expanded by a portion of the halogen gas. The area is closed.

(Function) This prevents halogen gas from flowing out from the ventilation fan and openings, so the fire can be extinguished in a short time.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a fire extinguishing equipment according to an embodiment of the present invention.

In the figure, a control panel 11 includes a ventilation fan 12 for ventilating and cooling the inside of the panel. Ventilation hole 13 for inflowing outside air
．． Temperature detector 14 for detecting that the temperature inside the panel is above a predetermined value, Fire detector 15 for detecting the occurrence of fire inside the panel High-pressure halogen gas is injected into the panel. A halogen gas ejection pipe 16 for filling, and a pressure detector 17 for detecting that halogen gas is ejected from the halogen gas ejection pipe 16. and,
A vinyl tube 18 is provided to branch the halogen gas.

The vinyl tube 18 is connected to the ventilation fan 12 and the ventilation hole 13.
It is routed inside the control panel 1 so as to pass directly above it. In addition, as shown in FIG. 2, parts 18a and 18b located directly above the ventilation fan 12 and the ventilation hole 13 have
A plastic bag 19 is folded and stored.

Therefore, when the halogen gas flows into the vinyl tube 18, the plastic bag 19 housed in the portions 18a and 18b is filled with the halogen gas, so that the plastic bag 19 is expanded as shown in FIG.

Note that a valve 21 is provided to release the halogen gas 20 to prevent the plastic bag 19 from bursting.

Further, as shown in FIG. 4, the ventilation fan 12 is connected to the AC power source 23 with the normally open contact 14a of the temperature detector 14 and the normally closed contact 17b of the pressure detector 17 connected in series.

With the above configuration, when the internal temperature of the panel reaches a predetermined value close to the permissible temperature of the equipment housed in the control panel 11, the temperature detector 14 is activated and the normally open contact 14a is turned on. Ventilation fan 12 is activated. As a result, control panel 1
1 is forcedly cooled, and the temperature inside the panel is limited to below the allowable temperature.

Here, if a fire occurs in the control panel 11, the fire detector 1
5 performs a detection operation, which causes, for example, a fire alarm to sound and a person who rushes to the fire to manually activate the fire extinguishing equipment. As a result, as shown in FIG. 5, high-pressure halogen gas 20 is ejected from the halogen gas ejection pipe 16.
The pressure causes the pressure detector 17 to perform a detection operation, its normally closed contact 14b to open, and the operation of the ventilation fan 12 to stop.

Furthermore, since the halogen gas 20 also flows into the vinyl tube 18, the plastic bags 19 housed in the portions 18a and 18b are expanded. Thereby, the plastic bag 19 closes the ventilation fan 12 and the ventilation hole 13 from inside the control panel 1.

In this way, when the halogen gas 20 starts blowing out, the ventilation lB12 stops and the plastic bag 19
The openings of the ventilation fan 12 and the ventilation hole 13 are respectively closed.

Therefore, the halogen 2 ejected inside the control panel 1
0 does not leak outside, and the halogen gas 20 prevents the control panel from leaking.
is rapidly filled.

As a result, the fire is extinguished immediately, thereby preventing important equipment from burning out and the halogen gas 20 from changing into toxic gas due to chemical reactions.

The vinyl tube 18 and the plastic bag 19 are preferably made of heat-resistant/large-resistant materials.

Incidentally, in the embodiments described above, the present invention is applied to the fire extinguishing equipment of the control panel, but the present invention can be applied to other things.

Further, the present invention can also be applied to a fire detector that automatically blows out halogen gas when a fire detector performs a detection operation.

[Effects of the Invention] As explained above, according to the present invention, when a fire breaks out and halogen gas is spewed out, the ventilation fan is stopped and the opening is covered with a plastic bag that is expanded by a portion of the halogen gas. Since the vent is closed, the outflow of halogen gas from the ventilation fan and the opening is prohibited, resulting in the effect that the fire can be extinguished in a short period of time.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an apparatus according to an embodiment of the present invention;
Figure 2 is a cross-sectional view illustrating a plastic bag stored in a vinyl tube, Figure 3 is a schematic diagram illustrating the expanded state of the plastic bag, Figure 4 is a circuit diagram illustrating the control system of a ventilation fan, Figure 5 is a schematic diagram illustrating the operation when extinguishing a fire;
The figure is a schematic diagram illustrating a conventional device. 12... Ventilation fan, 13... Air vent, 15... Fire detector. 16...Halogen gas blowout pipe, 18...Vinyl tube, 19...Plastic bag,
20...Halogen gas, 21...Valve. (7317) Agent: Patent Attorney Noriyuki Chika (
8105) King Hongbun Figure 1 - Figure 3 Figure 5 Figure 6

Claims (1)

[Claims] In a fire extinguishing system that fills a room ventilated by a ventilation fan with halogen gas to extinguish the fire when a fire occurs, the ventilation fan stop device stops the ventilation fan when the halogen gas pressure exceeds a predetermined value, and a part of the halogen gas is branched off. This fire extinguishing equipment includes a vinyl tube and a plastic bag that expands when filled with halogen gas branched by the vinyl tube and closes an opening in the room.