JPH05337215A - Fire extinguishing system with high reliability - Google Patents

Abstract

PURPOSE:To obtain a fire extinguishing system with high reliability which has no fear of a pressure leakage and whose installing construction work is facilitated by providing a driving device for opening the container valve of a pressure gas cylinder by a signal from a reception panel. CONSTITUTION:The pressure gas cylinder 1 filled with inert gas and a chemicals container 2 filled with fire extinguishing chemicals are allowed to communicate with each other by a conduit tube, and also, the chemicals container 2 and a fire extinguishing nozzle 8 are allowed to communicate with each other, and when a fire sensor detects a fire, inert gas having high pressure is led into the chemicals container 2 by a signal from the reception panel 9 which receives its signal, and the fire extinguishing chemicals are injected from the fire extinguishing nozzle 8. In such a case, the driving device for releasing the container valve 11 of the pressure gas cylinder 1 by a signal from the reception panel 9 is provided. Before the fire sensor detects the fire, the container valve 11 is in a fully closed state, therefore, gas pressure is not applied at all to a connected piping, etc., and a pressure regulator, and there is no leakage of gas pressure, and accordingly, even if the device is left as it is for a long period, it does not occur that the shortage of gas pressure or zero pressure is not caused at the time of operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an installation type fire extinguishing equipment, and particularly, it operates reliably in case of fire even when installed for a long period of time.

[0002]

^2. Description of the Related Art As a conventional installation type fire extinguishing equipment, as shown in FIG. 5, a pressurized gas container (1) filled with nitrogen gas at a pressure of about 130 kgf / cm ² and a chemical container filled with a fire extinguishing agent
(2) and (2) are installed separately, and a pressure regulator (3) is installed between them.
And an actuating part (5) for opening and closing the pipeline with a solenoid valve or the like is provided via a conduit. That is, a pressure regulator (3) is provided between the pressurizing gas container (1) and the operating part (5), and the stainless steel pipe (3) is installed with its primary side facing the container valve (11) side of the gas container (1). 4) Connect by communicating with each other, and further connect from the operating part (5) to each drug container (2) with a stainless steel branch pipe (6). Also drug container
From (2), use the piping (7) to connect each fire extinguishing nozzle in each fire extinguishing area.
It communicates with (8). Further, a reception board (9) is provided to operate the fire extinguishing equipment by a signal from a fire detector (not shown).

In the fire extinguishing equipment of the above construction, normally the container valve (11) of the gas container (1) for pressurization is fully opened, and the pressure regulator (3) following this is the pressure necessary for releasing the drug on its secondary side. Connected as is, and the line is closed at actuating part (5). Therefore, the nitrogen gas in the gas container (1) is filled up to the working part (5) while being pressurized.

In such a fire extinguishing facility, when a fire detector detects a fire, a signal from the reception panel (9) is used to activate the operation unit.
Since the solenoid valve of (5) operates to open the pipeline, and the solenoid on-off valve (10) of the pipeline that leads to the nozzle (8) in the area to be extinguished, opens the stainless steel pipe (4). The high-pressure nitrogen gas is immediately passed through the stainless steel branch pipe (6) to the drug container.
(2) Nozzle in the area where the fire extinguishing agent should extinguish inside
Eject from (8).

As described above, in the fire extinguishing equipment shown in FIG. 5, the pressure regulator (3), the operating portion (5), and the connecting portions of these with the stainless pipe (4) and the stainless steel branch pipe (6) are always connected. It is under gas pressure and can be activated immediately by a fire signal.

[0006]

However, if there is a pressurized portion in a portion other than the gas container, there is a possibility that gas pressure may leak from the portion. That is, FIG.
Of the gas valve for pressurization (1), the connection part between the container valve (11) and the stainless steel pipe (4), the connection part between the stainless steel pipe (4) and the pressure regulator (3), the pressure Regulator (3) body, connection between pressure regulator (3) and stainless steel branch pipe (6), connection between stainless steel branch pipe (6) and operating part (5) and operating part (5)
There are 7 places on the main body.

Since there are many places where the gas pressure may leak, it is necessary to pay sufficient attention to the installation and installation work. However, it is difficult to require each contractor who carries out such an installation to give complete consideration to pressure leakage, and after paying particular attention to the connection points and tightening points, the gas pressure is actually applied. After that, it is necessary to confirm the gas pressure leak one by one using soapy water etc. As described above, the conventional fire extinguishing equipment shown in FIG. 5 has a drawback that the installation cost is high because the pressure leakage must be taken into consideration.

Further, even if the pressure leak is taken into consideration during the installation work as described above, if it is installed in the above condition for a long period of time, deterioration of parts, loosening of the connection portion, etc. may occur and the pressure may be reduced. Leakage can occur. If a gas pressure leak occurs before using the fire extinguisher, it will be a large amount for a long period of time even if the amount is small.Therefore, the predetermined gas pressure for ejecting the fire extinguishing agent at the time of a fire will be insufficient. Or, in extreme cases, the gas pressure in the gas container becomes zero (atmospheric pressure), and even if the solenoid valve of the operating part is opened during a fire, there is no pressurized gas pressure, so extinguishing agents cannot be ejected. The reliability of fire extinguishing equipment may be insufficient.

[0009]

As a result of various studies in view of the above, the present invention provides a fire extinguishing system which is free from such a risk of pressure leakage and therefore easy to install and highly reliable.

That is, according to the present invention, a pressurizing gas container filled with an inert gas and a drug container filled with a fire extinguishing agent are connected by a conduit, and the drug container and a fire extinguishing nozzle are communicated with each other. In the fire extinguisher equipment that introduces the above-mentioned high-pressure inert gas into the chemical container by the signal from the receiving board that receives the signal when the fire detector detects a fire and injects the extinguishing agent from the fire extinguishing nozzle, the signal from the receiving board A drive device for opening the container valve of the pressurizing gas container is provided, and the drive device consisting of a motor for directly rotating and opening the container valve for opening the pressurizing gas container is used as the container valve. It is more effective to provide this.

[0011]

EXAMPLES The present invention will now be described in detail with reference to Examples.

First, the capacity of a gas container filled with nitrogen as an inert gas and the set value of a pressure regulator to be attached are confirmed. That is, as shown in FIG. 1, a pressure regulator (3) is attached to a pressurizing gas container (1), and a blind plug (20) is attached to the secondary side of the pressure regulator (3).
Open the container valve (11) in (1) with the handle (21). At this time, the primary side of the pressure regulator (3) is in the predetermined container (1) pressure (120
(kgf / cm ² or more), and further adjust the pressure
Confirm that the secondary side of (3) is in the range of 7 to 9.8 kgf / cm ² .

Next, as shown in FIG. 2, the container valve of the gas container (1)
The above-mentioned handle (21) when manually opening (11), nut (22) for attaching this, pressing plate (23), spring
Remove (24). Then, as shown in FIG. 3, a drive device for releasing pressurized gas, which includes a motor (25) driven by a DC 18V power source and a speed reducer (26) (maximum torque 150 kgf · cm) connected to the motor (25) (maximum torque 150 kgf · cm) 27) to its output shaft (2
8) and the handle shaft (29) of the container valve (11) between the reduction gear (3
It is attached to the head of the above-mentioned gas container (1) by connecting it via 0) and the coupling (31). The motor (25) power source is DC1
8V is used, AC100V or DC at all times and in emergency
24V is converted to DC18V and used.

The gas container (1) thus equipped with the opening drive device (27) is installed at a predetermined place, and as shown in FIG. 4, a power line from a DC 18V power source provided in the receiver (9). (Four
Connect 0) to the motor (25) of the drive (27). The power supply line (40) has two cores of + and-, and the motor rotates only in the direction of opening the container valve (11).

According to such a fire extinguishing system of the present invention, the container valve is normally fully closed, and no pressure is applied to the connected pipes or the like. However, 60m after the fire detector is activated
When the time until the drug was released from the nozzle (8) was measured, it was about 15 seconds, which was equivalent to the case of the conventional fire extinguishing equipment shown in FIG. The time from the operation of the fire detector to the full opening of the container valve by the opening drive device is about 25 seconds.

[0016]

According to such fire extinguishing equipment, since the container valve is fully closed before the fire detector detects a fire, no gas pressure is applied to the connected pipes and pressure regulator. Not not. Therefore, there is no possibility of gas pressure leakage, and even if the equipment is left for a long time, there is no shortage of gas pressure or zero pressure during operation, so it is a reliable fire extinguishing equipment for a long time. ..

[Brief description of drawings]

FIG. 1 is an explanatory view showing a procedure of a method for installing fire extinguishing equipment of the present invention.

FIG. 2 is an explanatory diagram showing a procedure of an installation method of the same.

FIG. 3 is a cross-sectional view of essential parts of the fire extinguishing equipment of the present invention.

FIG. 4 is an explanatory view showing an example of the fire extinguishing equipment of the present invention.

FIG. 5 is an explanatory diagram showing an example of conventional fire extinguishing equipment.

[Explanation of symbols]

 1 Gas container for pressurization 2 Chemical container 3 Pressure regulator 4 Stainless steel piping 5 Working part 6 Stainless steel branch pipe 7 Piping 8 Fire extinguishing nozzle 9 Receiver 10 Electromagnetic on-off valve 11 Container valve 20 Blind plug 21 Handle 22 Nut 23 Presser plate 24 Spring 25 Motor 26 Reducer 27 Drive for opening 28 Output shaft 29 Handle shaft 30 Reduction gear 31 Coupling 40 Power line

Claims (2)

[Claims] 1. A pressurizing gas container filled with an inert gas and a chemical container filled with a fire extinguishing agent are connected by a conduit, and the chemical container and the fire extinguishing nozzle are connected to each other, whereby a fire detector is fired. In the fire extinguishing equipment that introduces the above-mentioned high-pressure inert gas into the medicine container by the signal from the receiving board that receives the signal when it detects that the fire extinguishing agent is jetted from the fire extinguishing nozzle, pressurizing with the signal from the receiving board A highly reliable fire extinguisher equipped with a drive device for opening a container valve of a gas container. 2. The highly reliable fire extinguisher according to claim 1, wherein the container valve is provided with a drive device including a motor for directly rotating and opening the container valve for opening the pressurized gas container.