JP4922499B2 - CO2 fire extinguishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a carbon dioxide fire extinguishing equipment that extinguishes a fire by releasing a carbon dioxide fire extinguishing agent, and more particularly, a carbon dioxide fire extinguishing equipment provided with a safety device that regulates start-up of the fire extinguishing equipment due to malfunction of a starting gas container About.
[0002]
[Prior art]
A basic system diagram of a conventional carbon dioxide fire extinguishing system is shown in FIG. As main equipment of the carbon dioxide fire extinguishing equipment, a carbon dioxide storage container 1, an activation device (only a manual activation device 2 is shown in the drawing, and an automatic activation device is not illustrated), pipes 3, 4, 24, an injection head 5 , A control panel 6, an acoustic alarm device 7, a fullness indicator lamp (discharge indicator lamp) 8, and the like. In FIG. 3, an injection head 5 for injecting a carbon dioxide fire extinguishing agent, a fire detector (not shown), an emergency broadcast are provided in each of a plurality of protection sections A (only one is shown in FIG. 3). A sound alarm device 7 using a speaker, a damper 9 and the like are provided. In addition, outside the protective zone A, there are an operation box 10 of a manual activation device 2 for manually releasing carbon dioxide extinguishing agent, a full indicator lamp (release indicator lamp) 8, a recovery valve box (damper return box). 11 is provided. FIG. 5 is a front view of the operation box, and FIG. 6 is a front view of the inside of the operation box. The open / close door 12 of the operation box 10 includes a power indicator 13, a start indicator 14, and an inspection indicator 15. The operation box 10 includes a door switch 16, a start switch 17, and an emergency stop switch 18. Further, as shown in FIG. 3, a carbon dioxide storage container 1 for storing fire extinguishing carbon dioxide, a control panel 6 and the like are provided outside the protective section A.
[0003]
As shown in FIG. 3, the jet head 5 is connected to a plurality of carbon dioxide storage containers 1 through a fire extinguishing gas pipe 3 and a common gas pipe 4, and a selection valve 20 is connected to each fire extinguishing gas pipe 3. In addition, an inspection stop valve 21 is provided between the carbon dioxide storage container 1 on the common gas pipe 4 and the selection valve 20, and a safety valve 22 is interposed at the outlet of the common gas pipe 4. A plurality of activation gas containers 23 for opening the storage container 1 by gas pressure are connected to the carbon dioxide storage container 1 through an activation gas pipe 24, and are not returned to the activation gas pipe 24. A valve 25 is interposed. Each starting gas container 23 is equipped with an opener 26 for opening the container valve 23a.
[0004]
The control panel 6 includes a delay timer (not shown) that counts from the operation point of the start switch 17 and outputs a start command signal to the opener 26 after a predetermined time has elapsed. At that time, the opener 26 of the corresponding activation gas container 23 is opened to release the carbon dioxide extinguisher from the ejection head 5 in the protection section A. As shown in FIG. 3, the control panel 6 is wired with an emergency power supply device 51 using a battery. Further, a pressure switch 52 is installed downstream of the selection valve 20 so that the fullness indicator lamp 8 is turned on by detecting the pressure of the carbon dioxide extinguishing agent in the protection section A.
[0005]
FIG. 4 shows a basic operation flow in the manual mode of the carbon dioxide fire extinguishing equipment configured as described above. Now, when a person who has found and confirmed a fire in the protection zone A (step S1) opens the open / close door 12 of the operation box 10 (step S2), an evacuation alarm such as an audio alarm is output (step S3). Next, after confirming the evacuation of personnel in the protection section A, when the start switch 17 in the operation box 10 is pressed (step S4), the equipment in the protection section A such as a ventilation fan is stopped in conjunction with this. Are output (step S5).
[0006]
Simultaneously with the pressing operation of the start switch 17, a delay timer in the control panel 6 starts a time measuring operation (step S6). If the fire is extinguished or extinguished before the delay timer expires, the emergency stop switch 18 in the operation box 10 is pressed. The presence / absence of a pressing operation on the emergency stop switch 18 is determined (step S7). When the operation is performed, the process returns to step S1 and the equipment in the protection section A is recovered from the stop (step S8). If the delay timer expires without operating the emergency stop switch 18 (step S9), a start command signal is output from the control panel 6 to the opener 26, and the corresponding opener 26 is opened (step S10). ), The container valve 23a of the starting gas container 23 is opened (step S11), the corresponding carbon dioxide storage container 1 is opened by the gas pressure, and the corresponding selection valve 20 is opened, so that the carbon dioxide storage container 1 is opened. The carbon dioxide fire extinguisher is discharged from the ejection head 5 into the protection section A through the pipes 4 and 3 (step S12).
[0007]
At this time, the pressure switch 52 is actuated (step S13), and in response to the pressure signal, the fullness indicator lamp 8 provided outside the protective section A is turned on to inform the outside of the carbon dioxide extinguishing agent full state. (Step S14).
[0008]
[Problems to be solved by the invention]
In the carbon dioxide fire extinguishing equipment, when the concentration of carbon dioxide gas, which is a fire extinguishing gas, reaches the concentration required for fire extinguishing, it may have an adverse effect on the human body and may eventually lead to a fatal accident. Therefore, various safety measures are taken. For example, even if the opening / closing door 12 of the operation box 10 is not opened or the start operation is not performed, the start command is issued due to the wiring between the operation box 10 and the control panel 6 being accidentally cut or shorted. In order to prevent an erroneous signal from entering the control panel 6, an electric circuit abnormality detector (error emission prevention circuit), a ground fault detector, and the like are incorporated in the control panel 6.
[0009]
However, not only the above wiring but also electrical noise enters the wiring from the control panel 6 to the opener 26 of the starter gas container 23, causing the opener 26 to malfunction, or mechanical vibrations or shocks to the opener 26 itself. In some cases, the opener 26 may be activated due to an operation error or a misoperation or mischief in maintenance.
[0010]
Therefore, the present invention provides a carbon dioxide fire extinguishing equipment with safety measures so that the start-up of the fire extinguishing equipment can be regulated even when the opener of the starting gas container is activated regardless of a regular signal. Objective.
[0011]
[Means for Solving the Problems]
The present invention is installed in a protective compartment or in the vicinity thereof, and an operation box emergency stop switch with closing door is provided inside the box to release the start switch and the start-up command for instructing the start against boot device, A control panel including a timer for receiving a signal from the operation box and delaying the signal for a predetermined time; a starter gas container with an opener for receiving a signal from the control panel and opening a container valve of the starter gas container; , carbon dioxide storage vessel is opened by the gas pressure from the starting gas vessel, a jet head to release carbon dioxide fire extinguishing agent from the carbon dioxide storage vessel into said protective compartment, consisting comprises a carbon dioxide fire extinguishing in equipment, the jetting heads are communicatively connected to a plurality of the carbon dioxide storage vessel via the fire extinguishing gas pipe and a shared gas pipe, each fire extinguishing gas pipe is interposed selection valve In the carbon dioxide storage container, a plurality of activation gas containers for opening the carbon dioxide storage container by gas pressure are connected in communication via an activation gas pipe, and a non-return valve is interposed. In the middle of the start-up gas pipe, the valve is opened only when both the signal that the open / close door of the operation box is opened and the signal that the start switch is pressed are received. and provided a state near Ru electrodeposition solenoid valve was further the starting gas container and has established a pressure regulator for each starting gas pipe between the solenoid valve, fire in the protected compartment Is generated, the solenoid valve is opened by receiving both the signal that the open / close door of the operation box is opened and the signal that the start switch is pressed, and the emergency stop switch is pressed. Control panel When the delay timer of the time is up, a start command signal is output from the control panel to the opener of the corresponding starter gas container, the opener opens to open the container valve of the starter gas container, The starting gas passes through the solenoid valve, the corresponding carbon dioxide storage container and the selective valve are selectively opened by the gas pressure, and the carbon dioxide extinguishing agent in the carbon dioxide storage container is used as the fire extinguishing gas pipe and the common A filling indicator light provided in the vicinity of the protection section, which is discharged from the ejection head into the protection section through a gas pipe, operates a pressure switch installed downstream of the selection valve, receives the pressure signal, and It is characterized by the fact that is lit to inform the outside of the carbon dioxide extinguishing agent full state . Moreover , a bypass can be provided in the electromagnetic valve, and a manual valve can be provided in the bypass.
[0012]
[Action]
According to the carbon dioxide fire extinguishing equipment having the above configuration, a normally closed solenoid valve that is normally closed is installed between the starting gas container and the carbon dioxide storage container. Intervening in the middle of the piping between the gas container and the starter gas container opener causes electrical noise in the wiring with the control panel, mechanical vibrations and shocks, or operational errors in maintenance Even if it malfunctions due to accidents or mischief, it is possible to block the starting gas from flowing from the starting gas container toward the carbon dioxide storage container. Release from the head into the protective compartment can be prevented. And since the solenoid valve opens and operates only after the opening and closing door of the operation box is opened and the normal operation of pressing the start switch is performed, the carbon dioxide fire extinguishing agent from the carbon dioxide storage container is normally discharged from the injection head. Can be released into a protective compartment.
[0013]
If a pressure regulator is installed in the middle of the piping between the starting gas container and the solenoid valve, even if the starting gas in the starting gas container is carbon dioxide, the pressure regulator can be used to adjust the pressure. The solenoid valve can be protected from high-pressure carbon dioxide gas. If a bypass is provided in the solenoid valve and a manual valve is provided in the bypass, the manual valve is opened and the starting gas container is opened even if the solenoid valve is closed due to an electrical trouble such as a power failure. Carbon dioxide extinguishing agent can be released from the jet head into the protective compartment by manually opening the vessel.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a system diagram of a carbon dioxide fire extinguishing facility according to the present invention. As in the case of the carbon dioxide fire extinguishing equipment of FIG. 3, the carbon dioxide fire extinguishing equipment is a carbon dioxide storage container 1, a starting device (only the manual starting device 2 is shown in the drawing, and the automatic starting device is not shown), piping 3, 4, 24, ejection head 5, control panel 6, acoustic alarm device 7, full indicator lamp (discharge indicator lamp) 8, and the like are configured as main devices. The description is omitted.
[0015]
In the carbon dioxide fire extinguishing equipment according to the present invention, a solenoid valve 53 is provided in the middle of the piping between the starting gas container 23 and the carbon dioxide storage container 1 as a safety device. The electromagnetic valve 53 is in a normally closed state in which the valve is opened only when both the signal that the door 12 of the operation box 10 is opened and the signal that the start switch 17 is pressed are received. It is a normally closed type. A pressure regulator (decompression regulator) 54 is installed in the middle of the piping between the electromagnetic valve 53 and the starting gas container 23. Further, a bypass 55 is provided in the solenoid valve 53 and a manual valve 56 is provided in the bypass 55 as a countermeasure against electrical troubles such as during a power failure. Further, the electromagnetic valve 53 is interposed in the middle of the piping between the selection valve 20 and the starting gas container 23.
[0016]
The operation flow in the manual mode in the carbon dioxide fire extinguishing equipment provided with the safety device by the electromagnetic valve 53 is as shown in FIG. Now, when a person who has found and confirmed a fire in the protective zone A (step S20) opens the open / close door 12 of the operation box 10 (step S21), an evacuation alarm such as an audio alarm is output (step S22). Next, after confirming the evacuation of personnel in the protection zone A, when the start switch 17 in the operation box 10 is pressed (step S23), the device in the protection zone A such as a ventilation fan is stopped in conjunction with this. Then, the electromagnetic valve 53 is opened (step S24).
[0017]
Simultaneously with the pressing operation of the start switch 17, the delay timer in the control panel 6 starts the time measuring operation (step S25). If the fire is extinguished or extinguished before the delay timer in the control panel 6 expires, the emergency stop switch 18 in the operation box 10 is pressed. The presence or absence of a pressing operation on the emergency stop switch 18 is determined (step S26). If there is an operation, the process returns to step S20, and the device in the protection zone A is restored and the electromagnetic valve 53 is restored to the closed state. (Step S27). If the delay timer expires without operation of the emergency stop switch 18 (step S28), a start command signal is output from the control panel 6 to the opener 26 of the corresponding starter gas container 23, and the opener 26 is opened (step S29), the container valve 23a of the starting gas container 23 is opened (step S30), the starting gas passes through the electromagnetic valve 53 (step S31), and the corresponding carbon dioxide is generated by the gas pressure. The storage container 1 and the selection valve 20 are opened, and the carbon dioxide extinguisher in the carbon dioxide storage container 1 is discharged from the ejection head 5 into the protective section A through the pipes 4 and 3 (step S32). At this time, the pressure switch 52 is actuated (step S33), and in response to the pressure signal, the fullness indicator lamp 8 provided outside the protective section A is turned on to inform the outside of the carbon dioxide extinguishing agent full state. (Step S34).
[0018]
As described above, the electromagnetic valve 53 is opened only during a normal manual operation in which the open / close door 12 of the operation box 10 is opened and the start switch 17 is pressed, and is normally closed. Therefore, the opener 26 of the starter gas container 23 is caused by electric noise in the wiring between the opener 26 and the control panel 6, mechanical vibration, shock, operational mistakes or mischief in maintenance, etc. Even if it malfunctions, the starting gas does not flow from the starting gas container 23 toward the carbon dioxide storage container 1, and the carbon dioxide extinguishing agent is released from the ejection head 5 into the protective section A during a non-fire. It was lost and accidental deaths could be prevented.
[0019]
In addition, since a pressure regulator (decompression regulator) 54 is installed between the starting gas container 23 and the electromagnetic valve 53, even when carbon dioxide is used as the starting gas in the starting gas container 23, electromagnetic The valve 53 could be protected from high-pressure carbon dioxide gas. Since the bypass 55 is provided in the electromagnetic valve 53 and the manual valve 56 is provided in the bypass 55, the manual valve 56 is opened at the time of a power failure, and the opener 26 of the starter gas container 23 is manually opened, thereby carbon dioxide. A fire extinguisher can be discharged into the protective compartment A from the jet head 5.
[0020]
【Effect of the invention】
As described above, according to the present invention, the opener of the starting gas container malfunctions due to electrical noise entering the wiring with the control panel, mechanical vibration, shock, operation error or mischief in maintenance, etc. In this case, it is possible to prevent the release of carbon dioxide fire extinguishing agent, which has the advantage of ensuring the security of human life.
[Brief description of the drawings]
FIG. 1 is a system diagram of a carbon dioxide fire extinguishing facility according to the present invention.
FIG. 2 is a flowchart showing a flow of operation in manual mode of the carbon dioxide fire extinguishing equipment of FIG. 1;
FIG. 3 is a system diagram of a conventional carbon dioxide fire extinguishing facility.
4 is a flowchart showing a flow of operation in manual mode of the carbon dioxide fire extinguishing equipment of FIG. 3;
FIG. 5 is a front view of an operation box.
FIG. 6 is a front view of the inside of the operation box.
[Explanation of symbols]
1 Carbon dioxide storage container
2 starter
3. Fire extinguishing gas piping
4 Common gas piping 5 Injection head 6 Control panel
8 full indicator lamp (release indicator lamp)
10 Operation box 12 Opening / closing door 17 Start switch 18 Emergency stop switch
20 selection valve 23 gas container for start-up 23a container valve
24 start-up gas piping
25 Non-return valve 26 Opener
52 Pressure switch 53 Solenoid valve 54 Pressure regulator 55 Bypass 56 Manual valve
A protective compartment

Claims (2)

It is installed within the protected zone or near, the operation box stop switch with closing door is provided inside the box and for releasing the start switch and the start-up command for instructing the start against boot device, this operation box A control panel including a timer that delays the signal for a certain period of time, a starter gas container with an opener that receives the signal from the control panel and opens the valve of the starter gas container, and the starter In a carbon dioxide fire extinguishing equipment comprising a carbon dioxide storage container that is opened by gas pressure from a gas container, and a jet head that discharges carbon dioxide fire extinguishing agent from the carbon dioxide storage container into the protective compartment,
The jet head is connected to a plurality of carbon dioxide storage containers through a fire extinguishing gas pipe and a common gas pipe, and a selection valve is interposed in each fire extinguishing gas pipe.
A plurality of startup gas containers for opening the carbon dioxide storage container by gas pressure are connected to the carbon dioxide storage container via a startup gas pipe,
In the middle of the starting gas pipe where the non-return valve is interposed ,
A signal that opened the door of the control box, opens only when it receives both the signal of the signal that has been pressed the start switch is provided with a normal time state near Ru electrodeposition solenoid valve which is closed Furthermore, a pressure regulator is installed for each starting gas pipe between the starting gas container and its solenoid valve,
When a fire occurs in the protective compartment, the solenoid valve is opened by receiving both a signal that the open / close door of the operation box is opened and a signal that the operation switch is pressed,
When the emergency stop switch is not pressed and the delay timer in the control panel is up,
A start command signal is output from the control panel to the opener of the corresponding starter gas container, and the opener opens to open the container valve of the starter gas container, and the starter gas opens the electromagnetic valve. The corresponding carbon dioxide storage container and the selection valve are selectively opened by the gas pressure, and the carbon dioxide extinguishing agent in the carbon dioxide storage container passes through the fire extinguishing gas pipe and the common gas pipe from the jet head. The pressure switch that is released into the protection zone and installed downstream of the selection valve is activated and receives the pressure signal. A carbon dioxide fire extinguishing system that is configured to notify the outside of the fullness . The carbon dioxide fire extinguishing equipment according to claim 1, wherein a bypass is provided in the solenoid valve, and a manual valve is provided in the bypass.

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