JP2001286574A - Fire extinguishing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire extinguishing system capable of backup starting a fire extinguisher by the other remote starting system when the fire extinguisher is not operated by one remote starting system. SOLUTION: This fire extinguishing system is provided with electric starting systems 13, 14 and gas pressure starting systems 5, 12. Thus, two physically different starting systems are provided, whereby even if one starting system gets out of order not to remote-start the extinguisher, the extinguisher can be remote-started by the other starting system. One of the electric starting discharge and the gas pressure starting discharge is taken as a main starting system, and the other is taken as a backup starting system, whereby the backup starting system can be automatically operated when discharge of a fire extinguisher fails in the main starting system. A fire extinguisher discharge failure is determined when an injection confirming signal is not output from a pressure switch 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system for starting a fire extinguisher from a remote control panel.

[0002]

2. Description of the Related Art Conventionally, in a fire extinguishing system of remote start, a control panel and a fire extinguisher are connected by a signal line, and a start signal from the control panel is used to open a valve of a fire extinguishing cylinder of the fire extinguishing apparatus.
There is a so-called electric start-up method in which a fire extinguishing gas is injected.
In addition, when the fire extinguisher is started by piping between the control panel and the fire extinguisher by a gas pressure starting pipe, starting gas is injected from the control panel to the gas pressure starting pipe, and the pressure of the starting gas extinguishes the fire extinguishing apparatus. There is a so-called gas pressure start-up method in which a fire extinguishing gas is injected by opening a valve of a fire extinguishing cylinder.

[0003] In the electric starting method, a voltage is applied or a current is applied to a signal line from a control panel, and the state of the voltage or current applied to the signal line is detected, so that the presence or absence of disconnection of the signal line is constantly monitored. There are advantages that are possible. Further, since the signal line is used instead of the gas pressure starting pipe, there is an advantage that the installation work is simple. On the other hand, in the case of the electric start-up method, when a fire occurs, the fire is exposed to a high temperature due to a fire flame or the like. Therefore, it is necessary to protect the signal line with a heat insulating member. Also,
It is necessary to make the wiring hard to be cut by the collapse of the building, which is likely to occur when a fire occurs.

In the gas pressure starting method, the gas injection of the fire extinguisher is started through a gas pressure starting pipe which is hard to be physically damaged as compared with the signal line, so that it is not necessary to consider the influence of heat when a fire occurs. There are advantages. On the other hand, the gas pressure start method is used when checking the state of the gas pressure start pipe.
At the time of periodic maintenance, there is no other choice but to manually check the starting gas pressure by actually applying the starting gas pressure to the gas pressure starting pipe, and there is a disadvantage that it cannot be monitored constantly.

[0005]

In a conventional fire extinguishing system, only one of an electric starting system and a gas pressure starting system has been adopted as a starting system. For this reason, there is a possibility that the fire extinguisher does not start due to breakage of a signal line or a communication failure in the electric start-up system or breakage of a pipe or inactivation of the start-up gas in the gas pressure start-up system. If the fire extinguisher does not start even after starting from the control panel,
A man goes to a fire extinguisher at a location remote from the control panel,
The fire extinguisher valve had to be opened directly by hand.

[0006] Conventionally, there has been a so-called automatic fire extinguishing system in which a fire extinguisher is automatically activated from a control panel when a fire sensor detects a fire. In the case of this automatic fire extinguishing system, when the fire extinguisher is started, there may be no people on the side,
There is a problem that backup cannot be performed when startup fails. Also, as in the case of an automatic fire extinguishing system in a multi-story parking lot, if fire extinguishers are distributed in the multi-story parking lot to be extinguished, even if a person is at the side when a fire occurs, people will be backed up. It can be assumed that the fire extinguisher system cannot be reached. In this case, it is necessary to start backup of the fire extinguisher from a remote place. However, since the conventional fire extinguishing system has only one system of the remote start, the electric start system or the gas pressure start system, the system is restarted in the system that was not activated at the time of the automatic start. However, since the fire extinguishing device cannot be started, there is a problem that the fire extinguishing device may not start.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire extinguishing system in which, when a fire extinguishing device is not operating in one remote activation system, the other remote activation system can be activated by backup.

[0008]

In order to achieve the above object, the present invention provides a fire extinguishing system with two systems, an electric start system and a gas pressure start system. According to the present invention, since two physically different activation systems are provided, even if one activation system cannot remotely activate the fire extinguisher due to a failure or the like, the fire extinguisher can be remotely activated by the other activation system. .

Further, the present invention can be applied to an automatic fire extinguishing system. In this case, one of the electric activation method and the gas pressure activation method is used as a main activation system, and the other is used as a backup activation system. When the main activation system is an electric activation system, the electric activation system can constantly monitor the activation system, and thus can maintain a state without failure of the electric system such as a signal line. In the early stage of the fire, if the heat generated exceeds the expected level and the signal line breaks and cannot be started with the electric start method, the fire extinguisher will be backed up with a high heat and physically strong gas pressure start method. To achieve.

When the main starting system is a gas pressure starting system, if the fire extinguisher does not start even if the gas pressure starting system is less likely to be physically damaged, another starting system, the electric starting system, is used. Start backup by the method. This makes it possible to automatically and reliably start the backup even if there is no person on the control panel side when the release of the fire extinguishing agent has failed in the main activation system.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the fire extinguishing system of the present invention is applied to a multi-story parking lot will be described with reference to the drawings. FIG.
Shows the configuration of the fire extinguishing system. A control panel 1 of a fire extinguishing system is installed in connection with a parking facility control panel 2 of a multistory parking lot. A plurality of fire sensors 3, a plurality of fire extinguishers 4, and a single gas pressure activation device 5 are arranged in the multi-story parking lot.

When the fire sensor 3 detects smoke, heat or the like due to the occurrence of a fire, it sends out a fire detection signal to the control panel 1 through a signal line 6. The fire extinguisher 4 is configured by storing a storage container 7 storing a fire extinguishing agent or the like in a cabinet 8. An injection head 9 for discharging a fire-extinguishing gas is provided outside the cabinet 8, and is connected to the storage container 7 through a valve 10. Valve 1
A valve opener 11 for opening 0 is provided. Valve opener 11
When the starting gas is supplied from the gas pressure starting pipe 12 or the starting signal is input from the starting unit 13,
The valve 10 is opened. When the valve 10 is opened, the fire extinguishing agent is injected from the injection head 9 to the protection area. Activation unit 1
3 receives the activation signal directly through the signal line 14,
An activation signal is output to the valve opener 11. Pressure switch 15
Is provided in the storage container 7, and when the fire extinguishing agent is released and the pressure in the storage container 7 decreases, the pressure switch 15 operates. By this operation, an ejection confirmation signal is output to the signal line 16.

The gas pressure starting device 5 has a starting container 17 in which a starting gas is stored, and is connected to a valve opener 11 of the fire extinguisher 4 by a gas pressure starting pipe 12. The activation container 17
When an indirect activation signal is received via signal line 18, valve 1
9 is opened, and the starting gas is injected into the gas pressure starting pipe 12. Valve opener 11 of fire extinguisher 4 and pipe 1 for starting gas pressure
Between the two, a non-return valve 20 for preventing fire extinguishing gas from flowing back from the fire extinguishing device 4 side to the gas pressure starting pipe 12 is provided.

The control panel 1 has a control unit 21 composed of a CPU, a ROM, a RAM and the like. The control unit 21 is connected to the plurality of fire sensors 3 via the signal line 6. Connected to the starting unit 13 of the fire extinguisher 4 by a signal line 14,
Sends a start signal directly. It is connected to the gas pressure starting device 5 by a signal line 18 and sends out an indirect starting signal. Signal line 1
6 is connected to the pressure switch 15 of the fire extinguisher 4 to receive the injection confirmation signal.

The control panel 1 is further provided with a fire extinguishing agent discharge button 23 for manually activating the fire extinguisher 4 and a recovery button 24 for restoring the fire extinguishing system, parking facilities and the like. According to the fire extinguishing system described above, two systems, the electric starting system and the gas pressure starting system, are formed as the starting system of the fire extinguisher 4. One of the two activation systems is a main activation system, and the other is a backup activation system. That is,
If the electric activation method is the main activation method, the gas pressure activation method is the backup activation method, and if the gas pressure activation method is the main activation method, the electric activation method is the backup activation method.

Next, the operation of the fire extinguishing system of FIG. 1 will be described. The fire sensor 3 detects a fire and outputs a detection signal to the control unit 21. When receiving the detection signal, the control unit 21 determines whether a fire has occurred according to a predetermined algorithm. When the control unit 21 receives the detection signal from the fire sensor 3 and determines that a fire has actually occurred, the control unit 21 outputs a signal according to the situation, and the parking facility control panel 2 causes the entrance / exit door of the multi-story parking lot. Close and turn off the parking equipment power. The display lamp 25 and the speaker 26 display and announce that a fire has been detected, that the entrance door is closed, that the fire extinguishing agent is released, and the like. In addition, it also reports to security centers. And the control part 21
When the timing to discharge the fire extinguisher comes, a start signal is output.

Referring to the flowchart of FIG.
The operation at the time of output of the start signal of No. 1 will be described. The control unit 21
In order to cause the fire extinguishing device 4 to release the fire extinguishing agent, a start signal of a main start method is output (step S1). Then, it waits for receiving the injection confirmation signal from the fire extinguisher 4 (step S2). If the fire extinguishing agent is normally discharged, an injection confirmation signal is received from the pressure switch 15 (step S).
(2) Y), the processing is terminated.

If any abnormality occurs in the main starting method and the fire extinguishing agent is not injected, the pressure switch 15
If the injection confirmation signal is not received after a predetermined time has elapsed (N in step S2), a backup start signal is output (step S2).
3), end the process. In addition, before the processing is completed, the notification may be made by the speaker 26 or a notification to the effect that the injection has failed may be sent to the security center.

Although the embodiment in which the present invention is applied to the automatic fire extinguishing system has been described, the present invention is not limited to the above embodiment. For example, one or both of the main activation method and the backup activation method may be operated by manual operation.

[0020]

According to the present invention, since the fire extinguishing system is provided with two systems, an electric starting system and a gas pressure starting system, when the fire extinguishing system is not operated in one starting system, the other starting system is used. You can start backup. As a result, the backup can be reliably started.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a fire extinguishing system of the present invention.

FIG. 2 is a flowchart showing the operation of a control unit in FIG. 1;

[Description of Signs] 1 ... Control panel 2 ... Parking equipment control panel 3 ... Fire sensor 4 ... Fire extinguishing device 5 ... Gas pressure starting device 6 ... Signal line 7 ... Storage container 8 ... Cabinet 9 ... Injection head 10 ... Valve 11 ... Valve Opener 12 ... Pipe for starting gas pressure 13 ... Starting unit 14 ... Signal line 15 ... Pressure switch 16 ... Signal line 17 ... Starting vessel 18 ... Signal line 19 ... Valve 20 ... Non-return valve 21 ... Control unit 22 ... Signal line 23 ... Fire extinguisher release button 24 ... Recovery button 25 ... Indicator light 26 ... Speaker

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenji Takeyoshi 4-7-3 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. F-term (reference) 2E189 BA02 BB08 BC01 BC07 BD06 GA01 GA05 GB05

Claims (3)

[Claims] 1. A fire extinguisher which injects a fire extinguishing gas by a direct starting signal from a signal line and injects a fire extinguishing gas by a gas pressure from a gas pressure starting pipe, and which is connected to the fire extinguishing apparatus and the gas pressure starting pipe. A gas pressure starter for injecting start-up gas into the gas pressure starter pipe by an indirect start signal from a signal line; and a fire extinguisher connected to the fire extinguisher by a signal line. And also
A fire extinguishing system, comprising: a control panel connected to the gas pressure activation device by a signal line, and transmitting the indirect activation signal to the gas pressure activation device through the signal line. 2. A fire extinguishing gas is injected by a direct starting signal from a signal line, a fire extinguishing gas is injected by a gas pressure from a gas pressure starting pipe, and an injection confirming signal is sent to the signal line after the fire extinguishing gas is injected. A fire extinguisher to send out, a gas pressure starter connected to the fire extinguisher and the gas pressure starting pipe, and injecting a starting gas into the gas pressure starting pipe by a backup starting signal from a signal line; Connected to the fire extinguisher through the signal line, sends the direct start signal to the fire extinguisher, and is further connected to the gas pressure starter by a signal line, and sends out the direct start signal after the fire extinguishing device. A control panel for sending a backup start signal to the gas pressure start device through the signal line when a confirmation signal is not received. Fire fighting system to be. 3. A fire extinguishing gas is injected by a start signal from a signal line, a fire extinguishing gas is injected by a gas pressure from a gas pressure starting pipe, and an injection confirmation signal is sent to the signal line after the fire extinguishing gas is injected. A fire-extinguishing device, a fire-extinguishing device connected to the fire-extinguishing device and the gas-pressure starting pipe, and a gas-pressure starting device that injects starting gas into the gas-pressure starting pipe by an indirect starting signal from a signal line; It is connected by a signal line, sends out the indirect start signal to the gas pressure starting device through this signal line, and is connected to the fire extinguisher by a signal line, and after sending out the indirect start signal, the injection confirmation signal And a control panel for sending a backup start signal to the fire extinguishing device through the signal line when the fire extinguishing device is not received.