JP3532799B2 - Extinguishing gas emission control system in gas fire extinguishing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-based fire extinguishing facility for extinguishing a fire by releasing a fire extinguishing gas such as carbon dioxide, etc. Control system.

[0002]

2. Description of the Related Art Conventionally, gas-based fire extinguishing equipment has been proposed for extinguishing a fire by releasing a fire extinguishing gas such as carbon dioxide or halon gas when a fire occurs. This gas-based fire extinguishing facility is characterized in that it is possible to quickly extinguish a fire in a room in which equipment that dislikes water loss and pollution is installed, while minimizing equipment loss during fire extinguishing.

FIG. 1 shows an overall configuration diagram of such a gas fire extinguishing facility. In FIG. 1, a plurality of protection sections A and B
A fire detector 1 for detecting a fire, an injection head 2 for injecting a fire extinguishing gas, and a broadcast speaker 3 for performing an emergency broadcast are provided inside each of the above. Further, in the vicinity of the outside of each of the protection sections A and B, there are provided an operation box 4 for manually discharging the fire extinguishing gas and a discharge indicator lamp 5 for displaying the discharge of the fire extinguishing gas. Further, outside the protective compartments A and B, an extinguishing agent storage container 6 for storing extinguishing gas, a selection valve 7 for releasing the extinguishing gas, an opening valve of these extinguishing agent storage container 6 and a starting device for driving the selection valve 7. 8 and a control panel 9 are provided.

In such a gas-based fire extinguishing facility, it is possible to switch and select two basic operation modes for controlling fire extinguishing, an automatic mode and a manual mode. Among them, in the automatic mode, when an AND alarm is issued from the fire detectors 1 connected to the lines of different systems, or when a start switch provided inside the operation box 4 is pressed, a predetermined operation is performed. A condition for allowing the start of time countdown (hereinafter, countdown condition) is established. Then, the surrounding devices such as the fireproof shutter and the air conditioner damper are driven, the countdown for a predetermined time is started, and the start lamps provided on the operation box 4 and the control panel 9 are turned on, so that the watchman's attention can be paid. Be aroused. When the countdown ends, the conditions for permitting the release of the extinguishing gas (hereinafter referred to as gas releasing conditions) are established, and the extinguishing gas is released from the ejection head 2 (the establishment of these countdown conditions-release of the extinguishing gas). The operation up to is referred to as the extinguishing operation of extinguishing gas).

On the other hand, in the manual mode, when the observer discovers a fire visually or when the fire detector 1 issues a warning, and when the door of the operation box 4 is opened, the broadcast speaker 3 broadcasts a sound indicating the release of gas. Then, the attendant pushes the start switch of the operation box 4 to establish the countdown condition. After that, the fire extinguishing gas is discharged through the same procedure as the automatic mode.

Here, in the above-mentioned automatic mode, even if the activation switch of the operation box 4 is pushed by mischief or erroneous operation, the countdown condition is established and the extinguishing operation of the extinguishing gas is automatically performed. It has been destroyed and is very dangerous. To prevent such mischief,
In the automatic mode, the extinguishing gas is not released at all by simply pressing the start switch of the operation box 4, and the extinguishing gas is released only when the fire detector 1 issues a warning. A fire extinguishing gas emission control system has also been proposed.

[0007]

However, in such a conventional extinguishing gas discharge control system, in order to prevent gas discharge due to mischief or erroneous operation, the discharge operation is performed only by pressing the start switch of the operation box 4. However, there was a risk that it would take a long time to release the fire-extinguishing gas even when a fire actually occurred.
That is, although the fire actually occurred and the start switch was pressed by the staff, the extinguishing gas was not released at all, and the extinguishing gas was released for the first time after the fire sensor 1 issued the alarm. That is, since the interlocking device has been activated and the countdown has been started, it may take a very long time from when the start switch is pressed until the extinguishing gas is released.

The present invention has been made in view of the problems of the conventional fire extinguishing gas emission control system in a gas fire extinguishing facility, and prevents the fire extinguishing gas from being emitted due to mischief and the like from a fire detector. It is an object of the present invention to provide a fire extinguishing gas release control system in a gas fire extinguishing facility, which can release the fire extinguishing gas as quickly as possible when the above is reported.

[0009]

In order to achieve such an object, the present invention according to claim 1 is a discharge operation of fire extinguishing gas on the condition that discharge of fire extinguishing gas is manually instructed. Automatic mode to start extinguishing gas of extinguishing gas under one of the conditions of manual mode to start Among the modes, in a gas fire extinguishing facility that operates in one mode arbitrarily selected, a fire extinguishing gas emission control system in a gas fire extinguishing facility for controlling the emission operation of the fire extinguishing gas, Mode monitoring means for monitoring whether the operation is performed in the manual mode or the automatic mode, and a case where the mode monitoring means monitors the operation in the automatic mode. In the case the release of fire extinguishing gas is no alarm from the fire sensing means a case where it is instructed by manually operation of predetermined interlock device of the release operation of the fire extinguishing gas comprising a plurality of stages The operation from the fire detection means is stopped by performing the operation up to the stage
And a discharge control means for performing final discharge of the fire-extinguishing gas by performing the discharge operation in the remaining stages when there is a notification from the fire detection means. Has been done.

Further, the present invention according to claim 2 is directed to a fire extinguishing gas.
Fire extinguishing as one of the conditions that release was manually instructed
Manual mode to start gas release operation and fire detection
That there is a warning from the fire detection means or fire extinguishing gas
Fire extinguishing as one of the conditions that release was manually instructed
Any of the automatic modes that start the gas release operation
Gas fire extinguishing equipment that operates in one of the selected modes
System for controlling the extinguishing action of extinguishing gas in
A fire extinguishing gas emission control system for fire extinguishing equipment.
Operation in either the manual mode or the automatic mode.
A mode monitoring means for monitoring whether the rolling is performed,
It is said that the operation is performed in the automatic mode.
Extinguishing extinguishing gas when monitored by visual means
The fire detection means when the output is manually instructed
If there is no notification from the fire extinguishing
Of the discharge operation of a certain time until the countdown stage
The fire detection hand to stop the discharge operation.
Monitor the alarm from the corridor, and further from the fire detection means
If there is a notification, perform the release operation of the remaining stages.
And a discharge control means for finally discharging the fire-extinguishing gas .

[0011]

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described in detail below with reference to the drawings. The release control system in the present embodiment generally performs the release operation until the operation of the interlocking device when the start switch is pressed in the automatic mode operation, and remains when the fire detector issues a warning. The fire extinguishing gas is discharged by performing the discharge operation of. 1 is an overall configuration diagram of a gas fire extinguishing facility 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. 5 is an automatic mode operation. 6 is a partial operation flow of FIG. 5, and FIG. 8 is an operation flow of 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 protection zones A and B which are target areas for fire monitoring and extinguishing. There is. An operation box 4 and a discharge indicator lamp 5 are provided near the outside of each of the protection sections A and B. Further, outside the protective compartments A and B, a fire extinguishing agent storage container 6, a selection valve 7, a starting device 8, a control panel 9 and the like are provided.

The fire detector 1 is a fire detecting means for detecting the occurrence of a fire in each of the protection zones A and B and issuing a warning, and a plurality of fire detectors are provided for one protection zone. The plurality of fire detectors 1 are connected to the control panel 9 via receiving circuits of different systems. In order to avoid erroneous release due to an abnormality in the fire detector 1 or the receiving circuit, providing the receiving circuit of the separate system in this way causes the fire detector 1 connected to the receiving circuits of these two systems in the automatic mode. This is because the fire occurrence is judged on the condition that the AND of the reports is obtained.

The injection head 2 is an injection means for injecting a fire-extinguishing gas, and is connected to the fire-extinguishing agent storage container 6 via a gas pipeline. A selection valve 7 is provided in this pipeline, and the fire extinguishing gas is released by opening the opening valve and the selection valve 7 of the fire extinguishing agent storage container 6. The open valve of the fire extinguishing agent storage container 6 and the selection valve 7 are instantaneously driven by the gas pressure from the starter 8. Broadcast speaker 3
Is to broadcast a sound notifying that the fire-extinguishing gas is to be released, and the emission indicator lamp 5 is to display that the fire-extinguishing gas is to be released.

As shown in FIG. 2, each operation box 4 has, on the front side of its door 10, a display section 11 for displaying a countdown time before the extinguishing of the extinguishing gas, 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 lamp 14 indicating a fire occurrence, a start lamp 15 indicating that a gas discharge operation has been started, and a power state of the operation box 4. Power light 1
6. Provided with a shut-off valve closing light 31 that lights up when the shut-off valve for stopping the discharge of fire-extinguishing gas, a manual mode light 17 that lights up during manual mode operation, an automatic mode light 18 that lights up during automatic mode operation, etc. Is configured. In addition, as shown in FIG. 3, the operation box 4 detects the opening of the door 10 and a start switch 19 for manually instructing the release of fire-extinguishing gas inside the door 10 exposed when the door 10 is opened. And a door open detection switch 32 that operates.

On the other hand, the control panel 9 has a plurality of protection sections A and B.
Fire monitoring and fire extinguishing conditions in Japan are intensively monitored. Each fire detector 1, each broadcast speaker 3,
It is electrically connected to each emission indicator lamp 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 above the front surface thereof to show the status of each of the protection sections A and B. Each display window 20 has a fire lamp 21 indicating a fire, a start circuit abnormality lamp 22 indicating an abnormality in the start circuit, an automatic mode lamp 23 lit during automatic mode operation,
Also, a manual mode lamp 24 that lights up during the manual mode operation is provided.

On the lower part of the front surface of the control panel 9, a display section 25 for displaying the countdown time in the protective sections A and B in which the operation of releasing the extinguishing gas is first started, and an alarm speaker 26 for issuing an alarm sound. , All protected areas A,
A key switch 27 for collectively switching the operation mode in B to the automatic mode or the manual mode, a start light 28 indicating that the gas discharge operation has been started, a power light 29 indicating the power state of the control panel 9, and a gas An emission lamp 30 that indicates that the light has been emitted, a failure representative light 33 that typically notifies the occurrence of a failure, and the like are provided.

In such a gas fire extinguishing facility, as a basic operation mode for performing the fire extinguishing control, it is possible to switch and select between the automatic mode and the manual mode as in the conventional case. This mode switching is performed collectively by operating the key switch 27 of the control panel 9 in all the protection sections A and B, or by operating the key switch 13 of each operation box 4 for each protection section A, B. .

The operation flow of the automatic mode will be described with reference to FIG. In the normal monitoring state by this automatic mode operation, the power supply lights 16, 29 and the automatic mode lights 18, 23 of the control panel 9 and each operation box 4 are lit,
The alarm from the fire detector 1 is monitored on the control panel 9 (step S1). Then, the presence or absence of the alarm from the fire detector 1 and the on / off of the start switch 19 are monitored.

When an alarm is first issued from the fire detector 1, the fire lamp 21 of the control panel 9 blinks and an alarm sound is intermittently emitted from the alarm speaker 26. Further, due to the transfer output from the control panel 9, the fire lights 14 of the operation boxes 4 of the corresponding protection sections A and B blink (step S2). After that, when there is a further alarm from the fire detector 1 of another system or when the activation switch 19 is turned on, the fire lights 14 and 21 are switched to lighting, and the alarm sound from the alarm speaker 26 continuously sounds. (Step S3).

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

When the countdown is finished, the display on the display units 11 and 25 becomes "0 second", indicating that the countdown is finished (step S7). By ending the countdown in this way, the gas release condition is established (step S8). Then, the starter 8 is operated by the control signal issued from the control panel 9, and the selection valve 7
Is driven to supply the extinguishing gas to the jet head 2 in the fire section, and the gas is discharged from the jet head 2. Further, the emission lamp 30 of the control panel 9 is turned on (step S
9).

Here, in step S1 described above, when the activation switch 19 is first turned on, control is performed according to the operation flow of FIG. 6 (note that in FIGS. 6 and 7, steps having the same contents as in FIG. 5). Are indicated by the same step number). That is, first, the countdown condition is established and the startup lights 15 and 28 are turned on (step S
4), the interlocking device such as the shutter is operated (step S5). Then, after the extinguishing gas discharging operation has been performed up to this point, the discharging operation is temporarily stopped, and the presence or absence of an alarm from the fire detector 1 is monitored (step S20). When the fire detector 1 issues a warning, the operation of releasing the remaining extinguishing gas is started. That is, the countdown is started (step S6), the gas release condition is established by the end of the countdown (steps S7 and S8), the solenoid is activated (step S9), and finally the extinguishing gas is released.

In the operation flow of FIG. 6, the gas is not released only by turning on the start switch 19,
Since the gas is released only after the alarm from the fire sensor 1 is awaited, there is no danger that the fire extinguishing gas will be released when the activation switch 19 is turned on by mischief or the like. In particular, since the fire detector 1 waits for an alarm when the interlocking device is activated, the fire extinguishing gas is released by performing the release operation after the operation of the interlocking device after the fire detector 1 is informed. Therefore, the extinguishing gas can be released more quickly than in the conventional case.

Finally, the operation flow of the manual mode will be described with reference to FIG. However, the operation in the manual mode is the same as the conventional one. That is, in the normal monitoring state by the manual mode operation, the control panel 9 and each operation box 4
The power lights 16 and 29 and the manual mode lights 17 and 24 are turned on, and the alarm from the fire detector 1 and the operation of the start switch 19 in each operation box 4 are monitored in the control panel 9 (step S10). Then, the observer discovers the fire visually or by issuing a warning from the fire detector 1, and the door 10 of the operation box 4 is detected.
When the box 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 sound is broadcast by the broadcast speaker 3 in the fire section (step S11). When the monitor further presses the activation switch 19 inside the operation box 4, the countdown condition is established, and thereafter, the same process as the process after establishment of the countdown condition in the above-described automatic mode is performed (step S12-).
S18).

Various controls in the automatic mode and the manual mode are performed by a CPU (not shown) provided on the control panel 9.
And a program running on this CPU (hereinafter, these CPU and program are referred to as a control unit). That is, the control unit functions as a mode monitoring means for constantly monitoring whether the operation is performed in the manual mode or the automatic mode, and when the release of the fire extinguishing gas is manually instructed during the automatic mode operation, The extinguishing gas is discharged to a predetermined stage before the extinguishing gas is discharged and stopped, and when a warning is issued from the fire detector 1, the remaining discharging operation is performed to finally release the extinguishing gas. It functions as a release control means for performing various releases. However, all or a part of the functions of the mode monitoring means or the emission control means are set in each operation box 4
It is also possible to provide.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings. The release control system according to the present embodiment roughly performs a countdown for a predetermined time when the start switch is pressed in the automatic mode operation, and further performs the remaining release operation when an alarm is issued from the fire detector. It goes to release the fire extinguishing gas. FIG. 7 is a partial operation flow of FIG.

In step S1 of FIG. 5, when the activation switch 19 is first turned on, control is performed according to the operation flow of FIG. That is, the countdown condition is established (step S4), the interlocking device such as the shutter is operated (step S5), the countdown is further started (step S6), and the countdown is finished (step S7). After this, the discharging operation is temporarily stopped,
The presence or absence of an alarm from the fire detector 1 is monitored (step S21). When the fire detector 1 issues a warning, the operation of releasing the remaining extinguishing gas is started. That is, the gas release condition is established (step S8), the solenoid is activated (step S9), and finally the extinguishing gas is released. Note that step S21 may be arranged between step S8 and step S9. Further, step S5 and step S6 may be performed at the same time, or step S5 and step S6 may be performed in reverse order.

In this case, the fire detector 1 waits for an alarm when the countdown is completed, and if an alarm is issued, the extinguishing gas is released by performing the release operation after the countdown ends. Therefore, the extinguishing gas can be released more quickly.

Although one embodiment of the present invention has been described so far, the present invention is not limited to the above-described embodiment and may be implemented in various different forms within the scope of the technical idea thereof. is there.

[0032]

As described above, according to the present invention as set forth in claim 1, 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 are performed. In the case where what is being done is monitored by the mode monitoring means, if the release of the extinguishing gas is manually instructed and there is no notification from the fire detecting means, The discharging operation is performed to a predetermined stage before the extinguishing gas is discharged and stopped, and when there is a warning from the fire sensing means, the remaining discharging operation is performed to finally discharge the extinguishing gas. Since it is equipped with a discharge control means to perform, the gas is not released just by turning on the start switch, and the gas is released only after the fire sensor reports, so the start switch is turned on by mischief or the like. Extinguishing gas there is no danger of being released when that was. In particular, since the fire detector waits for the alarm to be issued in the state where the discharge operation has been performed to the predetermined stage, the fire extinguishing gas is released by performing only the remaining discharge operation after the alarm from the fire detector is issued. The fire extinguishing gas can be released more quickly than ever before.

Further, the discharge control means is a case where the discharge of the fire-extinguishing gas is manually instructed when the mode monitoring means monitors the operation in the automatic mode. If there is no alarm from the fire sensing means, of plants of release operation of the fire extinguishing gas comprising a plurality of stages
Release operation by performing the operation up to the operation stage of the fixed interlocking device
The stop, the by this <br/> and monitoring the alarm from the fire sensing unit, since waiting for alarm from a fire detector in a state that operates the interlocking equipment, alarm from a fire detector After that, the extinguishing gas is released by performing the releasing operation after the operation of the interlocking device, so that the extinguishing gas can be released quickly by a series of controls .

Further, according to the present invention as set forth in claim 2 , the discharge control means manually releases the extinguishing gas when the mode monitoring means monitors the operation in the automatic mode. When instructed and there is no notification from the fire detection means, the countdown for the predetermined time
The operation up to the
By monitoring the notification from the fire detection means, it becomes a state waiting for the notification from the fire detector when the countdown has finished, and if there is a notification, the release operation after the countdown ends can be performed. Since the extinguishing gas is released, the extinguishing gas can be released more quickly by a series of controls .

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a gas fire extinguishing facility 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 an operation box.

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

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

FIG. 6 is a partial operation flow of FIG. 5 in the first embodiment.

FIG. 7 is a partial operation flow of FIG. 5 in the second embodiment.

FIG. 8 is an operation flow during manual mode operation.

[Explanation of symbols]

A, B protection section 1 fire detector 2 jet head 3 broadcast speakers 4 operation box 5 emission indicator light 6 Fire extinguishing agent storage container 7 selection valve 8 starter 9 control panel 10 doors 11, 25 Display 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 error light 26 alarm speakers 30 emission lamp

─────────────────────────────────────────────────── --Continued from the front page (56) Reference JP-A-8-294546 (JP, A) JP-A-60-60863 (JP, A) JP-A-8-280838 (JP, A) JP-A-9- 253233 (JP, A) Actual development Sho 61-160588 (JP, U) Preventing accidental release of extinguishant related to gas fire extinguishing equipment (request), Tokyo Fire Department, June 9, 1998, Preliminary No. 468 Issue (58) Fields investigated (Int.Cl. ⁷ , DB name) A62C 37/40

Claims (2)

(57) [Claims] 1. A manual mode for starting the operation of releasing the extinguishing gas on the condition that the extinguishing of the extinguishing gas is manually instructed, and a fire detection means for detecting a fire have been issued. Or a gas-based fire extinguishing facility that operates in one mode arbitrarily selected from the automatic mode that starts the discharge operation of the extinguishing gas on the condition that the release of the extinguishing gas is manually instructed. In a fire extinguishing gas release control system in a gas-based fire extinguishing facility for controlling a fire extinguishing gas releasing operation, mode monitoring means for monitoring whether the operation is performed in the manual mode or the automatic mode And when the operation in the automatic mode is monitored by the mode monitoring means, when the release of the fire extinguishing gas is manually instructed, If there is no alarm from the unit, the step of operating the predetermined interlocking devices of the release operation of the fire extinguishing gas comprising a plurality of stages or
The fire detection hand to stop the discharge operation.
And a discharge control means for monitoring the alarm from the stage and further performing the release operation in the remaining stages to finally release the fire-extinguishing gas when the fire detecting means detects the alarm. A fire extinguishing gas emission control system in a gas fire extinguishing facility. 2. The extinguishing gas is manually instructed.
A condition to start the extinguishing action of extinguishing gas under
Motion mode and fire detection from fire detection means
That there was a fire or that extinguishing gas was manually instructed.
With one of the conditions as a condition,
One of the dynamic modes selected arbitrarily
In gas-based fire extinguishing equipment that operates, release of fire extinguishing gas
Of fire extinguishing gas in gas fire extinguishing equipment to control the operation
The release control system is operated in either the manual mode or the automatic mode.
The mode monitoring means for monitoring whether the operation is being performed and that the operation is being performed in the automatic mode is
Fire extinguishing gas when monitored by
If the release of fire is manually instructed, the fire detection
If there is no notification from the means, a multi-step elimination
A step of counting down for a predetermined time of the fire gas discharge operation
Operate up to the floor and stop the discharge operation
The alarm from the intelligence means is monitored, and the
If any of the above is reported, the release operation of the remaining stages is performed.
Fire extinguisher in a gas-based fire extinguishing facility, comprising:
Gas emission control system.