JPH08168538A - Fire extinguishing device - Google Patents

Abstract

PURPOSE: To surely escape without generating any short-circuit fire even when sprinkling water onto transforming facilities handling a high voltage. CONSTITUTION: When a manipulation box 10 is opened, a door switch 14 is turned on and an audio alarm is issued from a speaker 27 by an audio alarming device 25. When a start push button 15 on the manipulation box 10 is manipulated, a timer 25 is started and times up after the lapse of 20 seconds, for example. Then, a motor-driven valve 11 is opened, a simultaneous opening valve 6 is operated to be opened, and the radiation of water sprinkle is started from a water sprinkle head 8. At such a time, a fire extinguishing pump 3 is started by the reduction of inline pressure, and pressurized fire extinguish water is supplied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher, and more particularly, to a fire extinguisher suitable for extinguishing a section of a high-voltage substation installed indoors.

[0002]

2. Description of the Related Art Conventionally, carbon dioxide fire extinguishing equipment has been used as a fire extinguisher. These fire extinguishing equipments are intended for equipments in a room in which a fire extinguishing target compartment can be hermetically isolated from the surroundings, and their use is limited to, for example, an installation place of a private power generation equipment. Normally, an indoor installation type substation equipment is installed by arranging a large number of power receiving boards and switchboards, and it also becomes spatially wide. A storage room is required, which is also a cost burden. For this reason, consideration is being given to the use of water-based fire extinguishing equipment, including a reduction in equipment costs.

[0003]

However, when a water-based fire extinguishing equipment, for example, a fire extinguishing equipment using a water spray, is installed at an indoor substation installation location, the substation equipment handles a high voltage of several thousand to tens of thousands of volts. Also, because maintenance and inspections are routinely performed on a daily basis, there are relatively many people coming and going, and if water is immediately sprayed from the head due to a cable fire, etc., water will leak to the substation equipment, causing a fire due to a short circuit. There was a risk of triggering and hindering the evacuation of people inside.

The present invention has been made in view of the above circumstances, and provides a fire extinguisher capable of surely evacuating without causing a short circuit fire even when water spray is applied to a substation facility handling high voltage. The purpose is to do.

[0005]

To achieve this object, the present invention is constructed as follows. First of all, in the fire extinguishing equipment of the present invention, an open type water spray head is installed in the protective compartment, and a simultaneous opening valve is provided in the middle of the pipe from the fire extinguishing pump equipment to the water spray head. The simultaneous opening valve cuts off the supply of the primary side pressure water to the control port in a normal monitoring state to close the valve, and receives the supply to the primary side pressure water control port to open the valve in the event of a fire.

Further, a fire-extinguishing pump facility is provided to maintain the pressure of the primary side pipe of the simultaneous release valve at a predetermined value in a steady monitoring state, and to detect a pressure drop in the pipe due to opening of the simultaneous release valve during a fire to operate the pump. To supply pressurized fire extinguishing water to the water spray head. With respect to such a fire extinguishing facility, the present invention includes an electric valve that supplies primary pressure water to a control port of the simultaneous opening valve to open the valve, a start push button that controls the opening of the electric valve, and a door switch that detects door opening. The operation box installed outside the protected compartment, the voice alarm device that operates by the detection signal of the door switch when the door of the operation box is opened and outputs a voice alarm to the installation area of the water spray head, and the start push button operation It is characterized in that a timer that is activated and outputs after a predetermined set time, and an operation control unit that controls the opening operation of the electric valve by the output of the timer are provided.

Further, the operation box is further provided with an emergency stop push button for restoring the activated timer and stopping the voice alarm device. Further, an electric valve is incorporated in the operation box, and a test valve is connected in parallel to the electric valve. In addition, in the fire reception panel connected to the fire detector in the protective compartment, the fire alarm signal is activated when a fire signal is output by the fire detector, and the voice alarm is activated and the timer is activated. A control unit is provided.

Further, when the substation equipment is installed in the protection section, the operation control section instructs the control panel of the substation equipment to shut off the power source by the output of the timer.

[0009]

According to such a fire extinguisher of the present invention, when a fire alarm is issued by a fire alarm system or the like, if the door of the operation box installed outside the protection compartment is opened The speaker installed at the station will automatically issue a voice alarm to instruct the start of fire extinguishing and evacuation, enabling quick evacuation.

Further, when the start push button of the fire extinguishing equipment is operated, the timer is started, and a sufficient time for evacuation guidance, for example, 20 seconds later, the time is up, water is sprayed by the opening operation of the simultaneous opening valve, and there is a person inside. It is possible to avoid spraying water in the state. In addition, since an emergency stop push button that stops the timer operation on the way is provided, if the movable push button is operated by mistake or if the fire is small and the initial fire can be extinguished,
By operating the emergency stop button, unnecessary water injection can be immediately stopped, and water damage due to water spray can be prevented.

Furthermore, a fire signal is output from the fire reception panel when a fire detector reports that a fire signal is output, and a voice signal is automatically activated to activate a voice alarm device and a timer, thereby enabling a surveillance staff member to operate. Even at night or on holidays, for example, it is possible to reliably extinguish a fire by spraying with water.
Furthermore, in the section where the indoor substation equipment is installed, at the same time as the time is up, the substation equipment is instructed to shut off the power and
By performing the cutoff operation of the CB or the like, the water spray is performed in a state where the power supply is stopped, so that a short circuit fire due to the water spray is not induced and the device is not damaged.

[0012]

1 is an explanatory view of an embodiment of a fire extinguisher according to the present invention. In FIG. 1, the fire detector 2 is installed in the section where the indoor substation equipment is installed.
Is connected to the fire reception board 1 installed in the monitoring room by a sensor line. An open type water spray head 8 is installed in the section where the substation equipment is installed. The water spray head 8 is connected to a branch pipe 7 provided for the water supply main 5 from the fire pump 3. A simultaneous opening valve 6 is provided in the middle of the water supply main 5 from the fire extinguishing pump 3.

The simultaneous opening valve 6 is closed by cutting the supply of the primary side pressurized water to the control port Pc, and the valve is opened when the primary side pressurized water is supplied to the control port Pc. In order to perform the opening operation of the simultaneous opening valve 6, an electric valve 11 is provided in the operation box 10 installed outside the target compartment. The primary side of the simultaneous opening valve 6 is connected to the motor-operated valve 11 by a control pipe 20. The secondary side of the motor-operated valve 11 is connected to the control port of the simultaneous opening valve 6 via the control pipe 21.

The secondary side of the motor-operated valve 11 is opened to a water pipe or the like via an automatic drip 12. The auto drip 12 has a control pipe 21 for preventing the pressure on the control port side of the simultaneous release valve 6 from becoming high due to leakage or the like.
A small amount of water is allowed to escape from the auto drip 12 via the to prevent malfunction caused by pressure increase due to water leakage. The simultaneous opening valve 6 is opened by supplying the primary pressure of the simultaneous opening valve 6 from the control pipe 20 to the control port Pc through the control pipe 21 by opening the motor-operated valve 11 and pressurizing the valve. Further, a test valve 13 is connected in parallel with the motor operated valve 11. The test valve 13 is a manual valve, and the operation test of the simultaneous open valve 6 can be performed by manually opening the test valve 13 with the operation box 10 opened. In this case, the secondary side valve of the simultaneous open valve 6 is closed, and the valve 31 provided between the simultaneous open valve 6 and the simultaneous open valve 6 is opened to perform the test without radiating from the water spray head 8 in the water discharge section. be able to.

Further, the operation box 10 is provided with a door switch 14, a start push button 15 and an emergency stop push button 16.
That is, the operation box 10 is provided with a door, and by opening the door, the start push button 15 and the emergency stop push button 16 provided inside can be operated. When a fire occurs, the door of the operation box 10 is opened. The opening of this door is detected by the door switch 14, and a detection signal is sent to the operation box control panel 9. A limit switch is usually used as the door switch 14.

The operation box control panel 9 has a voice alarm device 27,
A timer 25, an operation control unit 26, and an emergency stop button 29 are provided. Upon receiving the detection signal of the door switch 14, the voice alarm device 27 operates and outputs a voice alarm from the speaker 28 installed in the target section. The content of the voice alarm is
It will be a voice message that provokes fire and extinguishes water by jetting water and evacuates the area.

Both the start push button 15 and the emergency stop push button 16 have a switch structure which is turned on by a push button operation. When the start push button 15 is operated, the timer 25 provided on the operation box control panel 9 is started. The timer 25 is preset with a predetermined time. The set time of the timer 25 is determined in consideration of a time sufficient for a person to evacuate from the protection section in which the substation equipment is installed, and is set to 20 seconds, for example. The time set in the timer 25 can be appropriately changed in consideration of evacuation time and the like. The operation of the start push button 15 may activate the voice alarm device 27 and the timer 25.

The timer 25 started by operating the start push button 15
When the time elapses after 20 seconds, the motor-operated valve 11 of the operation box 10 is opened by the timer output due to the time up. When the motor-operated valve 11 is opened, the internal pressure of the control pipe 20 is increased via the control pipe 21 to the control port Pc of the simultaneous open valve 6.
In addition, the simultaneous opening valve 6 is opened. At this time, a small amount of water also flows out from the auto drip 12, but the amount thereof is extremely small.
The supply of the primary pressure by opening the valve is not hindered at all.

When the simultaneous opening valve 6 is opened along with the opening of the motor-operated valve 11, the fire extinguishing water in the water supply main 5 is discharged from the branch pipe 7.
And the water spray from the water spray head 8 is started. Further, the operation control unit 26 provided in the operation box control panel 9 receives the power receiving and distribution control panel 2 based on the time-out output of the timer 25.
4 outputs a power-off instruction signal. In response to this power cutoff instruction signal, the power reception and distribution control panel 24 cuts off the power by a disconnecting operation such as OCB.

When the emergency stop button 29 of the operation box control panel 9 is operated, the motor-operated valve 30 provided in the middle of the control pipe 20, which is normally open, is closed. As a result, the supply of the in-pipe pressure from the control pipe to the control port Pc of the simultaneous release valve 6 is stopped, and the simultaneous release valve 6 closes the valve to stop the supply of the pressurized water to the water spray head. By operating this emergency stop button 29, the water spray head 8
The emission of water spray from can be stopped remotely.

The fire reception board 1 is connected to a plurality of fire detectors 2 provided in the protection section through a detector line, and is operated when a fire detection signal from the fire detector 2 is received and it is judged that a fire has occurred. A fire signal is output to the box control panel 9. When the operation box control panel 9 receives the fire signal from the fire receiving panel 1, the operation box control panel 9 automatically operates the voice alarm device 27 and activates the timer 25. Subsequent operations are the same as when the detection signal from the door switch 14 of the operation box 10 and the ON signal by the operation of the start push button 15 are received.

With this, even if there is no supervisor, for example, at night or on holidays, the fire can be reliably extinguished by water spray. Further, the operation box control panel 9 receives only the activation signal from the activation push button 15 of the operation box 10, and the fire reception panel 1
A function for setting a manual mode in which a fire signal from the vehicle is not accepted or an automatic mode in which both signals are accepted may be provided, and may be appropriately set according to the environment of the building and the like.

The fire extinguishing pump equipment comprises a fire extinguishing pump 3, a water tank 4, a pressure tank 17, a pressure reducing switch 18 and a pump control panel 19. The pressure tank 17 includes a branch pipe 2
The internal pressure of the main water supply pipe 5 is introduced by 3 to pressurize the internal air. The decompression switch 18 is turned off when the pressure inside the main water supply pipe 5 is at or above a specified value in the steady monitoring state. When the simultaneous open valve 6 is opened at the time of fire and the internal pressure of the main water supply pipe 5 drops and falls below the specified pressure, the decompression switch 18 is turned on to cause the pump control panel 19 to start the fire pump 3. In addition to this, a water tank 32 is attached to the fire pump 3 to prevent idle operation.

When the fire extinguishing pump 3 is normally started by the pump control panel 19 and becomes in the operating state, the operation box control panel 9
The operation display signal is output to the operation box control panel 9, and the operation display of the operating state of the fire extinguishing pump 3 is performed on the operation box control panel 9. Figure 2
3 is a flowchart showing a procedure at the time of a fire in the embodiment of FIG. First, as in step S1, when a fire such as a cable fire occurs in the installation section of the indoor substation where the water spray head 8 is installed, the fire detector 2 issues a warning and the fire reception panel 1 issues a fire alarm. Be done. Upon receipt of this fire alarm, the surveillance staff goes to the fire occurrence compartment and confirms the fire, then goes to the operation box 10 installed outside the compartment and extinguishes the door of the operation box 10 as in step S2. Open to start the equipment.

When the door of the operation box 10 is opened, the door switch 14 is turned on, the voice alarm device 27 of the operation box control panel 9 is activated, and a voice alarm is issued from the speaker 28, and step S3 is performed.
Is activated. Subsequently, when the start push button 15 is operated in step S4, the timer 25 of the operation box control panel 9 is started in step S5. The timer 25 is set for 20 seconds, and it is checked in step S6 whether 20 seconds has elapsed. At this time, step S7
At the same time, it is checked whether or not the emergency stop push button 16 has been operated. If the emergency stop push button 16 has been operated, the timer 25 is restored in step S14, and a voice alarm is issued by the voice alarm device 27. Stop.

In step S6, when 20 seconds has elapsed and the timer 25 has timed out, in step S8 the operation box 1
The motor-operated valve 11 of 0 is opened, and at the same time, step S9 is performed.
The power reception / distribution control panel 24 is instructed to shut off the power. When the motor-operated valve 11 is opened in step S8, the control pipe 20
Is applied to the control port Pc of the simultaneous release valve 6 via the control pipe 21, and the simultaneous release valve 6 is operated at step S10.
The release valve is operated.

As a result, the pressurized water of the main water supply pipe 5 is supplied from the branch pipe 7 to the water spray head 8, and water spray is started in step S11. Subsequently, in step S12, the pressure of the main water supply pipe 5 is reduced as the simultaneous open valve 6 is opened, and the decompression switch 18 of the pressure tank 17 is activated. Based on the operation of the decompression switch 18, the fire pump is started by the pump control panel 9 in step S13.

Note that the stop of the fire pump 3 after confirmation of the fire is
It will be performed on the pump control panel 19 side. Further, in the above-mentioned embodiment, the description was made by taking the indoor substation equipment as an example, but the present invention is not limited to this embodiment, and other equipment such as a computer room may be used, In this case, it is an effective fire extinguisher device because it is possible to evacuate by taking out backup data by a voice alarm before the water spray is emitted.

[0029]

As described above, according to the present invention, when the door of the operation box is opened in response to the occurrence of a fire, a voice alarm is automatically issued to the fire extinguishing target compartment, and the fire evacuation compartment is promptly evacuated. Can be encouraged. In addition, the water is not sprayed immediately by the operation of the start button, and the water is sprayed after a predetermined time by the timer activation, so that it is possible to prevent water from being sprayed when there is a person inside.

Further, by providing the emergency stop push button for recovering the operating timer, water injection due to erroneous operation can be immediately stopped, and water damage due to unnecessary water spray can be prevented in advance. In addition, by automatically activating the voice alarm device and activating the timer by the fire signal output when it is judged that there is a fire by the fire detector's notification from the fire reception panel, for example, at night or when there is no supervisor. Even on a holiday, it is possible to reliably extinguish a fire by spraying with water.

Further, in the section where the indoor substation equipment is installed, by causing the target equipment to shut off the power at the same time as the time is up, it is possible to reliably prevent the occurrence of a short-circuit fire due to water spray and damage to the equipment. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation procedure of the present invention.

[Explanation of symbols]

 1: Fire receiver 2: Fire detector 3: Fire pump 4: Water tank 5: Water supply main 6: Simultaneous open valve 7: Branch pipe 8: Water spray head (open type) 9: Control box control panel 10: Operation Box 11, 30: Motorized valve 12: Auto drip 13: Test valve 14: Door switch 15: Start push button 16: Emergency stop push button 17: Pressure tank 18: Pressure reducing switch 19: Pump control panel 20, 21: Control piping 23: Branch Pipe 24: Power distribution control panel 25: Timer 26: Operation control unit 27: Voice alarm device 28: Speaker 29: Emergency stop button 32: Water tank

Claims (5)

[Claims] 1. An open-type water spray head installed in a protective compartment, and a pipe provided from the fire extinguishing pump equipment to the water spray head, and supplied to the control port of the primary side pressure water in a steady monitoring state. Shut off the valve to close the valve, and in the event of a fire, open the valve by introducing the primary side pressure water into the control port and open the valve. Fire extinguishing pump equipment that keeps the value, starts pump operation by detecting the pressure drop in the pipe due to opening of the simultaneous opening valve at the time of fire, and supplies pressurized water to the water spray head, and the simultaneous opening valve. An operation box installed outside a protective compartment equipped with a motor-operated valve that supplies primary side pressure water to the control port to perform opening operation, and a start push button that controls the opening of the motor-operated valve and a door switch that detects door opening. , The operation An audio alarm device that operates by a detection signal of the door switch when the door is opened to output an audio alarm to the installation section of the water spray head; and a timer that is activated by operating the activation push button and outputs after a predetermined set time. A fire extinguisher device, comprising: an operation control unit that controls the opening operation of the electric valve according to the output of the timer. 2. The fire extinguisher according to claim 1, wherein the operation box is further provided with an emergency stop push button for restoring the activated timer and stopping the voice alarm device. apparatus. 3. The fire extinguisher according to claim 1, wherein the operation box includes the electrically operated valve, and a test valve is connected in parallel to the electrically operated valve. 4. The fire extinguisher as claimed in claim 1, wherein a fire detector provided in the protective compartment is connected to the fire detector.
A fire extinguisher, comprising a control unit that activates the voice alarm device and activates the timer in response to a fire signal that is output when a fire signal is issued by the fire detector. 5. The fire extinguisher according to any one of claims 1 to 4,
The fire extinguisher, wherein when the substation equipment is installed in the protection section, the operation control unit instructs the control panel of the substation equipment to shut off the power by the output of the timer.