JP2001061984A - Emergency stop system of gas extinguish facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop extinguishing gas until a guard instructs release of the extinguishing gas by changing a drive in an automatic mode to a drive in a manual mode after controlling an emergency stop means when the drive in the automatic mode is observed by a mode observing means. SOLUTION: Countdown conditions are settled at an automatic mode drive, starting lights of a control panel 9 and a control box 4 are lighted, a warning sound blows at a warning speaker of the control panel 9. When countdown starts, remaining time is indicated on indicating sections of the control panel 9 and the control box 4. When an emergency stop button of the control box 4 is pushed by a guard or the like for some reason, the indicating sections and the starting lights of the control panel 9 and the control box 4 are put out and the warning sound of the warning speaker of the control panel 9 stops blowing. A broadcast from a broadcasting speaker 3 in a fire district is stopped. An output of a transiting information to a discharging start is stopped, automatic lights are put out, and manual lights are lighted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas fire extinguishing system for extinguishing a fire by emitting a fire extinguishing gas such as carbon dioxide or the like. About.

[0002]

2. Description of the Related Art Conventionally, a gas fire extinguishing system has been proposed which extinguishes a fire by emitting a fire extinguishing gas such as carbon dioxide or halon gas when a fire occurs. This gas fire extinguishing system has a feature that it is possible to quickly extinguish a fire while minimizing equipment loss at the time of fire extinguishing in a room where equipment that dislikes water damage and pollution is installed.

[0003] Fig. 1 shows an overall configuration diagram of such a gas fire extinguishing system. In FIG. 1, a plurality of protection compartments A and B
Are provided with a fire detector 1 for detecting a fire, an ejection head 2 for ejecting a fire extinguishing gas, and a broadcast speaker 3 for performing an emergency broadcast. In addition, near the outside of each of the protection sections A and B, an operation box 4 for manually discharging the fire extinguishing gas and a discharge indicator light 5 for displaying the discharge of the fire extinguishing gas are provided. Further, outside the protection compartments A and B, a fire extinguishing agent storage container 6 for storing a fire extinguishing gas, a selection valve 7 for discharging the fire extinguishing gas, an activation device 8 for driving the selection valve 7, a control panel 9 and the like are provided. Have been.

[0004] In such a gas fire extinguishing system, it is possible to selectively switch between an automatic mode and a manual mode as basic operation modes for performing fire extinguishing control. In the automatic mode, a condition for permitting the start of countdown for a predetermined time (hereinafter referred to as a countdown condition) is established when there is an AND alert from the fire detectors 1 connected to different lines. Then, a countdown for a predetermined time is started. When the countdown condition is established, a start-up lamp provided on the operation box 4 or the control panel 9 is turned on, thereby calling attention of a supervisor. The countdown is performed in this way in order to allow time for people to safely evacuate from the protection sections A and B. When the countdown ends, a condition for permitting the release of the fire extinguishing gas (hereinafter referred to as a gas release condition) is established, and the fire extinguishing gas is released from the ejection head 2 (the establishment of these countdown conditions to the release of the extinguishing gas) Is referred to as a fire extinguishing gas discharging operation).

[0005] On the other hand, in the manual mode, an observer discovers a fire visually or by an alarm of the fire detector 1, and when the door of the operation box 4 is opened, a sound indicating gas release is broadcast by the broadcast speaker 3. Then, the countdown condition is established when the operator presses a start switch provided inside the operation box 4. When the countdown of the predetermined time is completed, the discharge condition is established, and the fire extinguishing gas is discharged.

Here, the operation box 4 is provided with an emergency stop button for emergency stopping the fire extinguishing gas discharge operation. After the countdown condition is established during operation in the automatic mode or the manual mode, if the emergency stop button is pressed for some reason, the countdown condition is temporarily cleared.

[0007] The following is a description of the processing when the countdown condition is established during automatic operation and the emergency stop button is pressed thereafter. FIG. 8 is a main part operation flow of the conventional gas fire extinguishing system when the emergency stop button is pressed during the automatic mode operation. As shown in FIG. 8, when the countdown condition is established, the starting lights provided on the control panel 9 and the operation box 4 are turned on, and a warning sound is output from the speaker of the control panel 9 (step S30). . When the countdown is started, the remaining countdown time is displayed on the display unit provided on the control panel 9 and the operation box 4 (step S31).

When the emergency stop button is pressed during the countdown, the display of the countdown time on the display section disappears, the starting lights on the control panel 9 and the operation box 4 are turned off, and the protection section in which the countdown condition is established is established. (Hereinafter, the fire section) The audio broadcasting that has been performed on the broadcast speakers 3 of A and B is stopped, and the transfer output to predetermined related devices is stopped (step S32). Then, the alarm of the fire detector 1 is cleared, and the fire monitoring state in the automatic mode is restored again (step S33). Thereafter, monitoring in the automatic mode is performed (step S3).
4). When the fire detector 1 issues an alarm again, the countdown condition is reestablished and the countdown starts.

[0009]

However, in such a conventional gas fire extinguishing system, even if the emergency stop button is pressed after the countdown condition is established during the automatic mode operation, the fire monitoring state in the automatic mode is simply set. , Various problems may occur. For example, if you want to rescue the injured person in the fire compartment before the fire extinguishing gas is released, even if you press the emergency stop button and clear the countdown condition, the fire detector It is conceivable that 1 is issued again, the countdown condition is established, and the countdown is started again. In order to stop the countdown, the emergency stop button must be pressed again, and depending on the situation, there is a problem that the emergency stop button must be kept pressed.

The present invention has been made in view of such a problem in the conventional emergency stop system for gas fire extinguishing equipment, and when an emergency stop button is pressed in the automatic mode, a monitoring person is required to extinguish the fire extinguishing gas. An object of the present invention is to provide an emergency stop system for gas fire extinguishing equipment, which can surely stop the release of fire extinguishing gas until an instruction to release fire is given.

[0011]

In order to achieve the above object, according to the present invention, the fire extinguishing gas discharging operation is performed on one of the conditions that the fire extinguishing gas discharge is manually instructed. Mode to start fire extinguishing gas release operation as one of the conditions that there is an alert from fire detection means that detects fire or that fire gas emission is manually instructed. A gas-based fire extinguishing system operating in one of the modes selected arbitrarily, wherein the emergency stop system of the gas-based fire extinguishing system for emergency stop of the extinguishing operation of the fire-extinguishing gas, wherein the manual mode Or a mode monitoring unit that monitors whether the operation is being performed in the automatic mode, and when the mode monitoring unit is monitoring that the operation is being performed in the automatic mode, If serial emergency stop means is operated, and is configured as characterized by comprising a mode switching means for switching the operation by the automatic mode in operation by the manual mode.

According to a second aspect of the present invention, in the first aspect of the present invention, an operation box provided in each of a plurality of protection compartments, and a control panel for centrally controlling each operation box are provided. Has an emergency stop means, a mode monitoring means, and a mode switching means.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the mode switching means is provided only when the emergency stop means is operated after the fire extinguishing gas discharge operation is started. The operation in the automatic mode is switched to the operation in the manual mode.

[0014]

An embodiment of the present invention will be described below in detail with reference to the drawings. The present invention generally comprises
In the automatic mode operation, when the emergency stop button is pressed, the operation in the automatic mode is switched to the operation in the manual mode. 1 is an overall configuration diagram of a gas fire extinguishing system according to the present embodiment, FIG. 2 is a front view of an operation box, FIG. 3 is a front view of the inside of the operation box, FIG. 4 is a front view of a control panel, and FIG.
FIG. 6 shows an operation flow in the automatic mode operation, and FIG. 6 shows an operation flow in the manual mode operation.

As shown in FIG. 1, a fire detector 1, a jet head 2, and a broadcast speaker 3 are provided inside each of a plurality of protective sections A and B, which are target areas for fire monitoring and extinguishing. I have. An operation box 4 and a discharge indicator 5 are provided near the outside of each of the protection sections A and B. Further, a fire extinguishing agent storage container 6, a selection valve 7, an activation device 8, a control panel 9, and the like are provided outside the protection sections A and B.

The fire detector 1 is a fire detecting means for detecting the occurrence of a fire in each of the protection sections A and B and issuing an alarm, and a plurality of fire detectors are provided for one protection section. The plurality of fire detectors 1 are connected to the control panel 9 via mutually different receiving circuits. In order to avoid erroneous emission due to abnormalities in the fire detector 1 and the receiving circuit, the provision of the separate receiving circuit in this manner is performed in the automatic mode. This is to determine the occurrence of a fire on condition that an AND of the alarm has been obtained.

The injection head 2 is an injection means for injecting a fire-extinguishing gas, and is connected to a fire-extinguishing agent storage container 6 via a gas pipe. A selection valve 7 is provided in this pipeline, and the fire extinguishing gas is released by opening the selection valve 7. This selection valve 7 is instantaneously driven by the gas pressure from the starting device 8. The broadcast speaker 3 broadcasts a sound indicating that the fire extinguishing gas is released, and the discharge indicator light 5 indicates that the fire extinguishing gas is released.

As shown in FIG. 2, each operation box 4 has a display section 11 on the front side of its door 10 for displaying a countdown time before the extinguishing gas is released, and an emergency stop for stopping the extinguishing of the extinguishing gas. A button 12, a key switch 13 for selecting an operation mode of an automatic mode or a manual mode, a fire light 14 indicating that a fire has occurred, a start light 15 indicating that a gas release operation has been started, and a power state of the operation box 4. Power light 1
6, a manual mode lamp 17 which is turned on during the manual mode operation, an automatic mode lamp 18 which is turned on during the automatic mode operation, and the like. The operation box 4 is, as shown in FIG.
A start switch 19 for manually instructing the release of fire-extinguishing gas is provided in an interior exposed when the door 10 is opened.

On the other hand, the control panel 9 includes a plurality of protection sections A and B.
In this system, the fire monitoring and fire extinguishing conditions are monitored intensively. Each fire detector 1, each broadcast speaker 3,
It is electrically connected to each emission indicator light 5, each operation box 4, and the like. As shown in FIG. 4, the control panel 9 is provided with a plurality of display windows 20 on the upper front surface thereof, which indicate the status of each of the protection sections A and B. Each display window 20 includes a fire light 21 indicating a fire occurrence, a start circuit abnormal light 22 indicating an abnormality in a start circuit, an automatic mode light 23 illuminated during an automatic mode operation,
And a manual mode lamp 24 that is turned on during the manual mode operation.

The control panel 9 has a display 25 on its front lower side for displaying the countdown time in the protection sections A and B where the fire extinguishing gas discharge operation has started first, and an alarm speaker 26 for emitting an alarm sound. , All protected areas A,
B, a key switch 27 for switching the operation mode to the automatic mode or the manual mode collectively, a start lamp 28 indicating that the gas discharge operation has been started, a power lamp 29 indicating the power state of the control panel 9, An emission lamp 30 or the like indicating that the light has been emitted is provided.

In such a gas fire extinguishing system, as a basic operation mode for performing fire extinguishing control, an automatic mode and a manual mode can be switched and selected as in the related art. The mode switching is performed for all the protection sections A and B by operating the key switch 27 of the control panel 9 or for each of the protection sections A and B by operating the key switch 13 of each operation box 4. .

The operation flow of the automatic mode will be described with reference to FIG. In the normal monitoring state by the automatic mode operation, the power lights 16 and 29 and the automatic mode lights 18 and 23 of the control panel 9 and each operation box 4 are turned on,
The alarm from the fire detector 1 is monitored by the control panel 9 (step S1). When a fire alarm is issued from the fire detector 1, the fire lamp 21 of the control panel 9 blinks and the alarm speaker 26 emits an alarm sound intermittently. In addition, the fire lamp 14 of the operation box 4 of the corresponding protection section A or B flashes by the notification output from the control panel 9 (step S2). Thereafter, when there is a further alarm from the fire detector 1 of another system, the fire lights 14 and 21 are switched to lighting, and the alarm sound from the alarm speaker 26 is switched to continuous sounding (step S3).

In the automatic mode, the countdown condition is established by the AND alarm from the fire detectors 1 and 1 of the different systems. When the countdown condition is established in this way, the start lights 15 and 28 of the control panel 9 and the operation box 4 in the fire compartment are turned on, and the audio broadcast is started by the broadcast speaker 3 in the fire compartment. Further, the control panel 9 outputs a notification output to a predetermined related disaster prevention device (step S4). Thereafter, a notification output is output to an interlocking device such as a fire shutter in the fire compartment, and the fire shutter is closed (step S5). Illustration of the shutter is omitted. After the countdown condition is established as described above, the countdown for a predetermined time (for example, 20 seconds) is started. The remaining time in this countdown is displayed on the display sections 11 and 25 of the operation box 4 and the control panel 9 (step S6).

When the countdown is completed, the display on the display units 11 and 25 becomes "0 second", indicating that the countdown has been completed (step S7). The end of the countdown establishes the gas release condition (step S8). The activation device 8 is operated by a control signal issued from the control panel 9, and the selection valve 7 is operated.
Is driven to supply a fire extinguishing gas to the ejection head 2 in the fire compartment, and the gas is discharged from the ejection head 2. Further, the emission lamp 30 of the control panel 9 is turned on (Step S)
9).

Next, the operation flow in the manual mode will be described with reference to FIG. In the normal monitoring state by the manual mode operation, the power lights 16 and 29 and the manual mode lights 17 and 24 of the control panel 9 and each operation box 4 are turned on, and the alarm from the fire detector 1 and the operation box 4 The operation of the start switch 19 is monitored on the control panel 9 (step S10). Then, the observer visually or fire detector 1
When the fire is detected by the alarm of the control box 4 and the door 10 of the operation box 4 is opened, the fire lights 14 and 21 of the control panel 9 and the operation box 4 blink, the speaker of the control panel 9 sounds, and the broadcast speaker of the fire compartment 3 is broadcasted (step S1).
1). In addition, the monitor operates the start switch 1 inside the operation box 4.
Pressing 9 establishes the countdown condition and then
The same processing as the processing after the establishment of the countdown condition in the automatic mode is performed (steps S12 to S1).
8).

Further, when the fire extinguishing gas is released during the automatic mode operation (in this example, when the countdown condition is established and the countdown is performed), the emergency stop button of the operation box 4 is operated. An operation flow when 12 is pressed will be described. FIG. 7 shows an operation flow of the main part in this case. First, steps S1 to S in FIG.
When the countdown condition is established by the same procedure as in 4,
The start lamps 15 and 28 of the control panel 9 and the operation box 4 are turned on, and a warning sound is emitted from the warning speaker 26 of the control panel 9 (step S20). And when the countdown starts,
This remaining time is displayed on the control panel 9 and the display units 11 and 2 of the operation box 4.
5 is displayed (step S21).

Here, when the emergency stop button 12 of the operation box 4 is pressed by an observer or the like for some reason, the control panel 9, the display sections 11 and 25 of the operation box 4, and the start lamp 28 are turned off, and the control panel 9 is turned off. Of the warning sound by the warning speaker 26 is stopped. Also, the broadcast by the broadcast speaker 3 in the fire compartment is stopped. Further, the output of the release start notification is stopped, the automatic lights 18 and 23 are turned off, and the manual light 1 is turned off.
7, 24 light up. In addition, as in step S1 of FIG. 6, the state is the same as the initial monitoring state in the manual mode (step S22).

Further, the alarm from the fire detector 1 is cleared, the whole system is restored to the state before the first alarm from the fire detector 1 is entered, and the operation mode is changed to the manual mode (step S23). . Thereafter, as in FIG. 6, monitoring in the manual mode is performed (step S24). That is, the countdown condition is not established even if the fire detector 1 issues the alarm again, and the countdown condition is established again when the start switch of the operation box 4 is pressed by the monitor, and the countdown is performed.

The control for changing from the automatic mode to the manual mode is performed by a CPU (not shown) provided in each operation box 4 and a program operating on this CPU (hereinafter referred to as C).
The PU and the program are referred to as a control unit).
That is, the control unit functions as a mode monitoring unit that constantly monitors whether the operation is being performed in the manual mode or the automatic mode.
When the button 2 is operated, it functions as mode switching means for switching the automatic mode to the manual mode. However, all or a part of the function of the mode monitoring means or the mode switching means,
It can also be provided on the control panel.

The switching operation control from the automatic mode to the manual mode by operating the emergency stop button may be performed before the countdown condition is established. In order to avoid necessary mode switching, it is preferable to enable mode switching only when the emergency stop button is pressed after the establishment of the countdown condition for determining that a fire has occurred as shown in FIG.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea. is there. For example, in the above embodiment, the case where the emergency stop button is pressed during the countdown has been described. However, at any point in the fire extinguishing gas discharge operation (establishment of the countdown condition to completion of gas release), the emergency stop button is pressed. In this case, switching to the manual mode can be similarly performed. For example, it may be during operation of an interlocking device such as a shutter.

[0032]

As described above, according to the first aspect of the present invention, the mode monitoring means for monitoring whether the operation is performed in the manual mode or the automatic mode, and the operation in the automatic mode is performed. When the emergency monitoring device is operated when the operation is monitored by the mode monitoring device, the mode switching device switches the operation in the automatic mode to the operation in the manual mode.
When the emergency stop button is pressed in the automatic mode, the emission of the fire extinguishing gas can be reliably stopped until the observer manually instructs the emission of the extinguishing gas. Therefore, the evacuation work of a person from the protection compartment can be performed safely, the incidence of personal injury and the like can be reduced, and the safety of the entire gas fire extinguishing system improves.

According to a second aspect of the present invention, there is provided an operation box provided in each of a plurality of protection compartments, and a control panel for centrally controlling each operation box. With the provision of the monitoring means and the mode switching means, the switching process from the automatic mode to the manual mode at the time of emergency stop can be collectively performed in the operation box.

According to a third aspect of the present invention, the mode switching means switches the operation in the automatic mode to the operation in the manual mode only when the emergency stop means is operated after the extinguishing operation of the fire extinguishing gas is started. By switching, it is possible to prevent the automatic emission from being impossible due to unnecessary mode switching due to mischief or the like, and it is possible to further improve the reliability of the fire extinguishing equipment.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a gas fire extinguishing system according to an embodiment of the present invention.

FIG. 2 is a front view of an operation box.

FIG. 3 is a front view of the inside of the operation box.

FIG. 4 is a front view of a control panel.

FIG. 5 is an operation flow during an automatic mode operation.

FIG. 6 is an operation flow in a manual mode operation.

FIG. 7 is a main part operation flow when an emergency stop button is pressed during automatic mode operation.

FIG. 8 is a main part operation flow in a conventional gas fire extinguishing system when an emergency stop button is pressed during automatic mode operation.

[Explanation of symbols]

 A, B Protective compartment 1 Fire detector 2 Injection head 3 Broadcast speaker 4 Operation box 5 Discharge indicator 6 Fire extinguishing agent storage container 7 Selection valve 8 Starter 9 Control panel 10 Door 11, 25 Display unit 12 Emergency stop button 13, 27 Key switch 14, 21 Fire light 15, 28 Start light 16, 29 Power light 17, 24 Manual mode light 18, 23 Automatic mode light 19 Start switch 20 Display window 22 Start circuit abnormal light 26 Alarm speaker 30 Emission light

Continued on the front page (72) Inventor Mikio Yamaguchi 2-10-43 Kamiosaki, Shinagawa-ku, Tokyo F-term in Fuchiki Corporation (reference) 2E189 GA01

Claims (3)

[Claims] 1. A manual mode in which a fire extinguishing gas discharge operation is started under one of the conditions that the fire extinguishing gas discharge is manually instructed, and an alarm is issued from a fire detecting means for detecting a fire. Or a gas fire extinguishing system that operates in one of an arbitrarily selected one of an automatic mode in which a fire extinguishing gas discharge operation is started under one of the conditions that the fire extinguishing gas discharge is manually instructed. In the emergency stop system of the gas fire extinguishing equipment for emergency stop of the extinguishing operation of the fire extinguishing gas, mode monitoring means for monitoring whether the operation is performed in the manual mode or the automatic mode, In the case where the operation in the automatic mode is monitored by the mode monitoring means, and when the emergency stop means is operated, the operation in the automatic mode is performed manually. Emergency stop system for a gas system extinguishing systems, characterized in that it comprises a mode switching means for switching the operation by over-de, a. 2. An operation box provided in each of a plurality of protection compartments, and a control panel for centrally controlling each operation box, wherein each of the operation boxes includes the emergency stop means, the mode monitoring means, and the mode. The emergency stop system for gas fire extinguishing equipment according to claim 1, further comprising a switching means. 3. The mode switching means switches the operation in the automatic mode to the operation in the manual mode only when the emergency stop means is operated after the extinguishing operation of the fire extinguishing gas is started. The emergency stop system for a gas fire extinguishing system according to claim 1 or 2.