JP6174455B2 - Fire extinguishing equipment - Google Patents

Description

The present invention relates to a fire extinguishing equipment such as a pre-acting sprinkler fire extinguishing equipment that opens a pre-actuating valve when a fire is detected by a fire detector and supplies pressurized fire-extinguishing water to a secondary pipe and then discharges water by operating a sprinkler head.

  2. Description of the Related Art Conventionally, for example, a pre-actuated sprinkler fire extinguishing equipment is known as a fire extinguishing equipment that prevents erroneous water discharge due to damage to a sprinkler head.

  The pre-actuated sprinkler fire extinguishing equipment is composed of a pre-actuating valve device, a closed-type sprinkler head, a fire detector, and a pre-acting valve control panel installed for each protection section. The secondary piping of the pre-actuating valve device connected to the sprinkler head is filled with pressurized fire-fighting water or compressed air, and when a fire is detected by a fire sensor (single interlock control), or fire detection and sprinkler When both the pressure reduction detection by the head operation is determined (double interlock control), the pre-actuating valve device is opened and the water for pressurized fire extinguishing is discharged from the sprinkler head.

  On the other hand, when the sprinkler head is broken, since the fire alarm by the fire detector has not been determined, the pre-actuating valve device is not opened, and erroneous water discharge can be reliably prevented.

The pre-acting valve device includes a pre-acting valve that functions as a main valve having an opening / closing drive mechanism, and a motor- operated valve that opens / closes the pre-acting valve by being remotely controlled by a control signal from the pre-acting valve control panel. It has. The actuating motor valve is provided with a limit switch that detects the fully open position and the fully closed position, and the opening operation is performed by applying a drive voltage to the motor of the actuating motor valve by the start control of the pre-actuated valve control panel. When the fully open position is detected during operation, the motor drive is stopped and the fully open position is stopped. In addition, after driving the actuating motor valve to the fully open position, switching the motor rotation direction by switching the polarity and applying the drive voltage to the motor of the actuating motor valve by the recovery start control of the pre-actuated valve control panel The closing operation is performed, and the motor drive that detects the fully closed position during the closing operation is stopped and stopped at the fully closed position to recover.

By the way, in the pre-acting sprinkler fire extinguishing equipment, a pre-acting valve device is installed in each protection section, for example, when both the fire alarm and the depressurization detection by the sprinkler head operation are determined for the two protection sections. In some cases, the activation electric valves of the two pre-actuating valve devices provided corresponding to the respective protection sections are controlled to be activated by the pre-acting valve control panel .

However, the pre-acting valve control panel determines the drive circuit and signal line of the motor-operated valve for operation based on the premise that the pre-acting valve device is controlled by a predetermined number or less. In the case of starting control of the motor-operated valves, the motors are sequentially started with a predetermined interval time so that the operations of the plurality of operating motor-operated valves do not overlap, and the drive current that flows through one start-up control is limited.

  In addition, when checking the pre-actuated sprinkler fire extinguishing equipment, the fire detector is tested and the end test valve is opened to create the same state as when the sprinkler head is activated. By distinguishing both fire detection by the sensor and pressure reduction detection by the sprinkler head operation, it has been confirmed that the motor operated valve for operating the pre-actuating valve device is controlled to operate normally. When an operation instruction for simultaneous restoration is received, a plurality of motor-operated valves for activation are sequentially restored and activated from a fully open position to a fully closed position at a predetermined interval time, and the drive current that is supplied by one restoration activation control is supplied. Restricted.

JP-A-4-189372 JP-A-4-276271

However, the interval time for sequentially starting multiple motor-operated valves so that the operations do not overlap is set in advance to a sufficiently long time with respect to the operating time of the motor-operated valve provided as a design value. Since the interval time is longer than the actual operating time of the actuating motor valve , it takes time to sequentially start and release the plurality of actuating motor valves , and the opening of the pre-actuating valve device is delayed. Therefore, there is a possibility that the amount of water discharged from the sprinkler head will drop temporarily and hinder the initial fire fighting.

  In addition, after the inspection is completed, even when the plurality of actuated motor valves controlled to the fully open position are sequentially controlled to be restored to the fully closed position, the interval time is longer than the actual operating time of the actuated motor valve. As a result, it takes longer to complete the recovery.

In order to solve such a problem, it is only necessary to control the activation of one actuating motor valve, and to control the activation of the next actuating motor valve when the arrival at the fully open position or the fully closed position is detected. However, the sequential activation control for controlling the activation of the actuation motor valve to detect the arrival at the fully open position or the fully closed position and the activation control of the next actuation motor valve is compared to the sequential activation control with an interval time, Since it is necessary to determine the detection of the fully open position, the control process becomes complicated, and if a failure occurs in the fully open position detection function, the startup control of the multiple actuated motor-operated valves is stopped in the middle and reliability is improved. There is still a possibility of causing trouble.

An object of this invention is to provide the fire extinguishing equipment which can suppress the control delay by performing appropriately the setting of the interval time in the case of starting sequentially so that the operation time of the several motor operated valve may not overlap.

The present invention
A plurality of actuated electric valves that open and close by remote operation;
When a predetermined activation condition is determined in a normal state, a plurality of motor-operated valves are operated by sequentially controlling activation with a predetermined interval time to avoid duplication of operation between the fully closed position and the fully open position . A control unit;
In the fire extinguishing equipment with
Each of the plurality of motor operated valves is provided with a position detector for detecting the fully closed position and the fully open position,
The control unit,
A plurality of actuating the electric valve in a check condition sequentially start control, along with measured based on the position detected by the position detector the operation time between the fully open position and fully closed position for each of a plurality of operating electric valve, the An operation time measurement unit for detecting the maximum operation time from the plurality of operation times measured;
An interval time setting unit for setting an interval time determined based on the maximum operation time detected by the operation time measurement unit in the control unit;
It is provided with.

Here, the interval time setting unit obtains the interval time by adding a predetermined margin time to the maximum operation time.

According to the fire-extinguishing equipment of the present invention, for example, a pre-actuated sprinkler fire-extinguishing equipment provided with a pre-acting valve device for each protection section, for example, fire detection by a fire sensor and pressure reduction by operating a sprinkler head in a plurality of protection sections. When the two activation conditions for detection are determined, the plurality of actuated motor-operated valves in the fully closed position are sequentially activated and controlled with a predetermined interval time to avoid duplication of operation, and the interval time in this case Is determined and set based on the maximum operating time detected from the operating time measured by operating all the motor-operated valves installed in the fire extinguishing equipment between the fully open position and the fully closed position. since you sequentially without it possible to suppress the deviation between the actual operation time and the time interval to a minimum, duplicate the operation of the operating electric valve provided in a plurality of pre-actuated valve device By suppressing the control delay in the case of dynamic, it makes it possible to reliably perform sequential open initial extinguishing by a plurality of pre-actuated valve device.

In addition, after the inspection is completed, even when a plurality of motor-operated valves are activated and controlled sequentially after an interval, the difference between the interval time that avoids duplication of operation and the actual operation time is minimized. It is possible to reduce the time required for recovery of the plurality of pre-actuating valve devices.

An explanatory diagram showing the outline of a pre-actuated sprinkler fire extinguishing system as an example The block diagram which showed embodiment of the function structure of the pre-acting valve control panel of FIG. Flow chart showing control action of pre-actuated sprinkler fire extinguishing equipment Explanatory drawing showing the outline of the sprinkler fire extinguishing equipment that controls the control valve to the open position in the steady state

[Outline of pre-actuated sprinkler fire extinguishing equipment]
FIG. 1 is an explanatory view showing an outline of a wet pre-actuated sprinkler fire extinguishing equipment as an example of the fire extinguishing equipment of the present invention. As shown in FIG. 1, a fire pump 10 is installed in a pump room such as a basement floor of a building and is driven by a motor 12. The motor 12 is controlled to start and stop by the pump control panel 14. The fire pump 10 driven by the motor 12 sucks fire water from the water source tank 15 and supplies pressurized fire water to a water supply main pipe 16 arranged in the height direction of the building.

  The fire pump 17 is provided for the fire pump 10. A pressure tank 18 used for starting the fire pump 10 is also provided. The pressure tank 18 is connected to the water supply main pipe 16 and introduces pressurized fire-extinguishing water in the pipe to compress the air inside. A pressure switch 20 is provided in the pressure tank 18, and the pressure switch 20 detects a pressure reduction in which the internal pressure of the water supply main pipe 16 drops below a specified pressure, and outputs a pressure reduction detection signal to the pump control panel 14, thereby the motor 12. To start the fire pump 10.

  A branch pipe 22 is drawn out from the water supply main pipe 16 for each protection section of the building, for example, by floor. A pre-acting valve device 24 is provided at a branch portion of the branch pipe 22. A closed-type sprinkler head 26 is provided in the branch pipe 22 on the secondary side of the pre-actuating valve device 24. In addition, a fire detector 36 is installed in the protection zone where the sprinkler head 26 is installed, and the sensor line from the fire detector 36 is connected to the pre-actuated valve control panel 34 via the self-fire report receiver 35. . A terminal test valve 28 is provided on the terminal side of the branch pipe 22, and its secondary side is connected to the drain pipe 32 through the orifice 30.

The pre-actuating valve device 24 includes a pre-acting valve 40, a motor-operated valve 42 for operation , a pressure reduction detection switch 44, and a flowing water detection switch 46. The pre-actuating valve 40 is opened by an operating motor operated valve 42 . The motor-operated valve 42 is closed in a normal monitoring state. When the electrically operated valve for opening 42 is opened by the opening control signal from the pre-operating valve control panel 34, the pre-operating valve 40 becomes openable.

  In this state, when the sprinkler head 26 connected to the secondary side pipe is opened by receiving a thermal air current due to a fire, the secondary side pressure is lowered by the water discharge from the activated sprinkler head 26 and the pre-actuating valve 40 is Open and supply pressurized fire-fighting water from the primary side to the secondary side.

When the pre-actuating valve 40 is opened, the pressure of the water supply main pipe 16 connected to the primary side is also reduced, and this pressure reduction is detected by the pressure switch 20 provided in the pressure tank 18, and the pump control panel 14 The fire pump 10 is started. The pressure reduction due to the operation of the sprinkler head 26 provided on the secondary side of the pre-actuating valve 40 is detected by a pressure reduction detection switch 44 . Further, the flowing water to the secondary side due to the opening of the pre-actuating valve 40 is detected by the flowing water detection switch 46.

[Configuration of pre-actuated valve control panel]
(Outline of pre-actuated valve control panel)
FIG. 2 is a block diagram showing an embodiment of the functional configuration of the pre-actuated valve control panel.

  As shown in FIG. 2, the pre-actuated valve control panel 34 includes a control unit 48, an operation unit 50, a display unit 52, and an alarm unit 54. For example, the pre-actuating valve is provided for each protection section shown in FIG. The devices 24-1 to 24-n are connected. A drive unit 56 is provided in the pre-actuated valve control panel 34 corresponding to the pre-actuating valve devices 24-1 to 24-n. In addition, when not distinguishing the pre-acting valve devices 24-1 to 24-n, the pre-acting valve device 24 is used.

  The pre-actuating valve devices 24-1 to 24-n are shown by taking out the fire detector 36, the actuating electric valve 42, the pressure reducing detection switch 44 and the actuating electric valve 42 shown in FIG. A position detector 58 for detecting the fully open position and the fully closed position of 42 is provided. Although the fire detector 36 is installed in the protective section of the pre-actuated valve device, it is shown in the pre-actuated valve device for convenience of explanation.

  The control unit 48 is a function realized by, for example, execution of a program, and uses, as hardware, a computer circuit having a CPU, a memory, various input / output ports, and the like.

  For the control unit 48, a fire sensor 36 provided on the pre-acting valve device 24-1 to 24-n side for each protection section is connected by a sensor line, and the decompression detection switch 44 and the position detector 58 are signaled. Further, the actuated motor-operated valve 4 is connected by a control line via a drive unit 56.

  Further, the control unit 48 is provided with an operation time measuring unit 60 and an interval time setting unit 62 as functions realized by executing the program. The display unit 52 is provided with various indicators necessary for the control operation of the pre-actuated valve control panel 34. The alarm unit 54 is provided with a speaker for outputting a fire alarm and a fault alarm.

(Configuration of control unit)
When the control unit 48 of the pre-actuating valve control panel 34 determines both fire detection by the fire detector 36 and decompression detection by the decompression detection switch 44 for each protection section as double interlock control, the pre-acting valve device 24, an opening control signal is output to the actuating motor operated valve 42, and the opening control signal is remotely controlled. Along with this, the pre-actuating valve 40 is opened to control the sprinkler head 26 to sprinkle pressurized fire-extinguishing water. .

Further, as another pattern, the control unit 48 detects a failure that cannot be detected by the fire detector 36 , for example, a failure detection such as a transmission failure, a disconnection, a short circuit, an interlock stop, a commercial power supply disconnection, and a decompression detection by the decompression detector. Is determined, an opening control signal is output to the actuating motor operated valve 42 to perform opening control, whereby the pre-actuating valve device 24 is opened to discharge pressurized fire-extinguishing water from the sprinkler head 26.

  In addition, the control unit 48 sets a predetermined interval time Ti for avoiding duplication of operation when both the fire detection by the fire detector 36 and the decompression detection by the decompression detection switch 44 are determined for a plurality of protection sections. The opening control signals are sequentially output to the motor-operated valves 42 provided in the plurality of pre-acting valve devices 24 to remotely control the opening, and the pre-acting valve 40 is operated to open and pressurize from the sprinkler head 26 accordingly. Control to sprinkle fire-fighting water.

  In addition, when the control unit 48 detects acceptance of a simultaneous recovery operation performed after a plurality of pre-actuating valve devices 24 are operated on a trial basis by inspection of equipment, the control unit 48 sets a predetermined interval time Ti that avoids duplication of operation. In addition, a closing control signal is sequentially output to the motor-operated valves 42 provided in the plurality of pre-acting valve devices 24 to remotely control the closing, and the pre-acting valve 40 is closed to restore the steady state. Take control.

(Configuration of operation time measurement unit and interval time setting unit)
The operation time measuring unit 60 provided in the control unit 48 sequentially outputs a start signal to each of the actuating motor operated valves 42 in the fully closed position provided in all the pre-actuating valve devices 24 in a state where the inspection mode is set, for example. Then, the operation time Td until the fully open position is detected by the position detector 58 is measured, and the maximum operation time (Td) max is obtained. Note that the operation time from the fully closed position to the fully open position of the actuating motor operated valve 42 is substantially the same as the operation time from the fully closed position to the fully open position, and either one may be measured. In order to increase the measurement accuracy, both operation times may be measured.

The interval time setting unit 62 provided in the control unit 48 sets the interval time Ti obtained based on the maximum operation time (Td) max obtained by the operation time measurement unit 60 in the control unit 48. The interval time setting unit 62, for example, is an interval time Ti obtained by adding a predetermined margin time ΔT to the maximum operation time (Td) max, that is, Ti = (Td) max + ΔT
Is set in the control unit 48.

  By setting the interval time Ti as described above, the control unit 48 can detect a plurality of operations in the fully closed position when a fire detection by the fire detector 36 and a pressure reduction detection by the operation of the sprinkler head 26 are determined in a plurality of protection sections. The motor-operated valves 42 are operated while being sequentially controlled with a predetermined interval time Ti. In this case, all the motor-operated valves 42 are operated between the fully open position and the fully closed position. Therefore, the difference between the interval time Ti and the actual operation time can be suppressed to the minimum necessary, and the plurality of pre-acting valve devices 24 are set. By suppressing the control delay when the actuating motor operated valves 42 provided in the system are sequentially started without duplicating the operation, the initial turn-off by the sequential opening of the plurality of pre-actuating valve devices 24 is suppressed. It makes it possible to perform reliably.

  In addition, when the control unit 48 detects acceptance of the simultaneous recovery operation by the person in charge after the inspection is completed, the operation motor valves 42 of the plurality of pre-actuating valve devices 24 that have been inspected are sequentially activated with an interval time Ti. Even in the case of recovery by control, it is possible to suppress the difference between the interval time Ti for avoiding duplication of operation and the actual operation time to the minimum necessary, and the time required for recovery of the plurality of pre-actuating valve devices 24. Can be shortened.

[Control action of pre-actuated sprinkler fire extinguishing equipment]
FIG. 3 is a flowchart showing a control operation when a fire occurs in the pre-actuated sprinkler fire extinguishing equipment. In FIG. 3, the process of the pre-actuating valve control panel 34 is indicated by a block, and other events and operations are indicated by double blocks. Moreover, the apparatus accompanying a control operation is referring FIG.1 and FIG.2.

  As shown in FIG. 3, when a fire occurs in step S1 (hereinafter, “step” is omitted), the fire detector 36 detects a fire in S2, and the control unit 48 of the pre-actuated valve control panel 34 determines a predetermined value in S3. When the time accumulation operation is performed and the fire detection continues even after the accumulation time has elapsed, the fire detection is determined in S4.

  On the other hand, when the sprinkler head 26 is operated in response to a thermal air current due to a fire in S5, a decompression occurs in the secondary side piping of the pre-actuating valve 40 in S6, and this is caused by the decompression detection switch 44 being actuated as in S7. Output decompression detection signal.

The control unit 48 of the pre-actuating valve control panel 34 receives the decompression detection signal from the decompression detection switch 44 and discriminates the decompression detection, whereby the AND condition is established by discriminating both the fire detection and the decompression detection, An open control signal is output to the operating motor operated valve 42, and the operating motor operated valve 42 is opened in S8.

In this case, when the control unit 48 determines fire detection by the fire detectors 36 provided in a plurality of protection sections and pressure reduction detection by the pressure reduction detection switch 44, the control unit 48 sets a plurality of intervals at a preset interval time Ti. operating electric valve 42 open control signal to sequentially output to sequentially opening the plurality of actuating the electric valve 42 in S8.

When the motor operated valve 42 is opened, the pre-actuated valve 40 shown in S9 is opened. When the pre-actuating valve 40 is opened, the running water detection switch 46 is operated to output a running water detection signal. Subsequently, in S11, as the pre-actuating valve 40 is opened, a pressure drop occurs in the primary side pipe, that is, the water supply main pipe 16, and the pressure switch 20 of the pressure tank 18 operates as shown in S12. When the fire-extinguishing pump 10 is activated, pressurized fire-extinguishing water is supplied, and the fire-extinguishing water is discharged from the operating sprinkler head 26 through the pre-actuating valve device 24 in the open state, and the fire extinguishing of S14 is performed.

Subsequently, if fire extinguishing is confirmed in S15, the pre-actuating valve closing switch of the operation unit 50 shown in FIG. 3 is operated (recovery operation) in S16, and the operating electric valve 42 is closed in S16.

Here, when the plurality of pre-actuating valve devices 24 are opened, the control unit 48 sets a preset interval in the motor-operated valves 42 provided in the plurality of pre-acting valve devices 24 opened. An opening control signal is sequentially output at a time Ti, and the plurality of motor operated valves 42 are sequentially closed in S8.

When the actuated motor operated valve 42 is closed, the closing operation of the pre-actuated valve 40 is performed in S17. Accordingly, the flowing water detection switch 46 is restored in S18, and the water discharge is stopped in S19.

[Fire extinguishing equipment with the open position as the steady position]
FIG. 4 is an explanatory view showing an outline of a wet sprinkler fire extinguishing facility that controls the motor operated valve to an open position in a steady state.

  As shown in FIG. 4, the configuration of the fire pump 10, the motor 12, the pump control panel 14, the water source water tank 15, and the water supply main pipe 16 is the same as in the embodiment of FIG.

Each floor of the building from the water mains 16, through a control valve 100 and the water flow detection device 102 functions as the working electric valve and pull the branch pipe 22, branch pipe 22 of the secondary side of the water flow detection device 102 Is connected to a closed sprinkler head 26.

The control valve 100 uses an electric valve that can be controlled to open and close by driving a motor. The control valve 100 is held in the open position in the steady monitoring state, and the open position becomes the steady position. For this reason, the pipe internal pressure of the water supply main pipe 16 is supplied to the sprinkler head 26 on the secondary side through the open control valve 100 provided in the branch pipe 22 and the flowing water detector 102. As the control valve 100, the pre-actuating valve 40 provided with the actuating electric valve 42 shown in FIG. 1 may be used.

  The flowing water detection device 102 includes a flowing water detection switch 104. The flowing water detection switch 104 detects a valve opening or a pressure drop due to a water flow generated by discharge of fire-extinguishing water when the sprinkler head 26 connected to the secondary branch pipe 22 is operated by receiving heat from a fire. And the running water detection signal is output to the sprinkler control panel 110 via the fire fighting repeater 112.

  A terminal test valve 28 and an orifice 30 are provided on the terminal side of the branch pipe 22, and the water flow detection device 102 is artificially operated by a flow of water that flows by opening the terminal test valve 28 during a test to perform a test operation such as a pump operation. .

The sprinkler control panel 110 outputs a control signal to the control valve 100 via the fire fighting repeater 112. A fire detector 36 is installed in the protection section of the sprinkler head 26, and a fire detection signal is output to the self-fire alarm receiver 35 via the fire alarm repeater 114, and the fire alarm receiver 35 determines the fire. Then, a fire signal is output as a transfer signal to the sprinkler control panel 110.

The sprinkler control panel 110 controls the opening of the control valve 100 provided in the branch pipe 22 to a steady position where the sprinkler control panel 110 is opened in an initial state where the operation of the facility is started. When the sprinkler head 26 is actuated in response to a thermal airflow due to a fire, the secondary pressure is lowered by the water discharge from the actuated sprinkler head 26, and the valve body of the flowing water detection device 102 is opened by the flowing water at this time, and the flowing water detection switch 104 is turned on, and the sprinkler control panel 110 notifies the detection of running water.

As the secondary pressure decreases due to water discharge from the sprinkler head 26, the pressure in the water supply main pipe 16 also decreases. This pressure reduction is detected by the pressure switch 20 provided in the pressure tank 18, and the pump control panel 14 extinguishes fire. The pump 10 is started.

  When it is confirmed that the fire has been extinguished, the control valve 100 is closed by the water discharge stop operation by the sprinkler control panel 110, the water discharge from the activated sprinkler head 26 is stopped, and the pump control panel 14 is instructed to operate the pump. To stop.

  As in the case of the pre-actuated valve control panel 34 shown in FIG. 2, the sprinkler control panel 110 is provided with a control unit 48 having functions of an operation time measuring unit 60 and an interval time setting unit 62. For the control valve 100, a position detector 58 for detecting an open position (fully opened position) and a closed position (fully closed position) is provided as in the case of the motor operated valve 42 of FIG.

  The operation time measuring unit 60 provided in the sprinkler control panel 110 outputs an activation signal to all the control valves 100 in a state where the inspection mode is set, for example, and operates for example from the fully open position to the fully closed position. Td is measured, and the maximum operation time (Td) max is obtained.

  The interval time setting unit 62 provided in the sprinkler control panel 110 obtains an interval time Ti obtained by adding a predetermined margin time ΔT to the maximum operation time (Td) max and sets it in the sprinkler control panel 110.

If the sprinkler control panel 110 determines a malfunction in which a fire signal from the fire detector 36 cannot be obtained even if the sprinkler head 26 operates in a plurality of protection zones and a flowing water detection signal is obtained, a plurality of sprinkler control panels 110 are in a fully open position. The control valves 100 are sequentially controlled to close at a predetermined interval time Ti, and the closing operation is performed. In this case, all the control valves 100 are operated between the fully open position and the fully closed position. Therefore, it is possible to suppress the difference between the interval time Ti and the actual operation time to the minimum necessary, and to close the plurality of control valves 100. The control delay in the case of sequentially closing without overlapping is suppressed, and it is possible to suppress the water damage damage due to misreported water from the sprinkler head 26.

  In addition, when the sprinkler control panel 110 detects acceptance of a simultaneous recovery operation by a person in charge after the inspection for closing the control valve 100, the plurality of control valves 100 that have been inspected are sequentially opened at intervals of Ti. Even in the case of recovery, it is possible to minimize the difference between the interval time Ti for avoiding duplication of operation and the actual operation time, and to reduce the time required for recovery of the plurality of control valves 100. And

[Modification of the present invention]
(Single interlock)
In the above embodiment, when both the fire detection by the fire detector and the decompression detection by the decompression detector are discriminated, an open control signal is output to the motor operated valve for opening control, and the pre-acting valve is controlled by the opening control. An example is a double interlock control pre-actuated sprinkler fire extinguishing system that opens and sprinkles pressurized fire-fighting water from the sprinkler head. However, when a fire detection is detected by a fire detector, an open control signal is sent to the motor operated valve. The same applies to a pre-actuated sprinkler fire extinguishing equipment of single interlock control in which the output is controlled to open, the pre-actuating valve is opened by the open control, and the water for pressurized fire extinguishing is sprinkled from the sprinkler head.

In the case of this single interlock, in addition to the pattern of opening control by outputting an open control signal to the motorized valve for operation when a fire is detected by the fire detector, failure detection that cannot be detected by the fire detector, such as transmission failure, disconnection, etc. When a failure detection such as a short circuit, interlocking stop, commercial power supply disconnection, etc. is determined, an open control signal is output to the motor operated valve for opening control, and the pre-actuating valve device 24 is opened by the open control, and the sprinkler head To discharge pressurized fire-fighting water.

(Secondary compressed air filling or evacuation)
Moreover, although said embodiment has taken the case where the secondary side piping of a pre-acting valve apparatus is filled with the water for pressurized fire extinguishing as an example, the sprinkler fire extinguishing which filled the secondary side piping with compressed air was taken as an example. It can be similarly applied to a negative pressure type sprinkler fire extinguishing equipment that suppresses false alarm water by using a facility or a vacuum pump to make a negative pressure against a malfunction of the sprinkler head of the secondary pipe.

(Fire prevention equipment)
Further, the present invention can be similarly applied to fire prevention equipment automatic valves such as fire spread suppression, water spray in a tunnel, and water curtain.

(Other)
The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

24, 24-1 to 24-n: Pre-acting valve device 34: Pre-acting valve control panel 36: Fire detector 40: Pre-acting valve 42: Electric valve 44 for operation 44: Depressurization detection switch 46 , 104: Flowing water detection switch 48 : Control unit 50 : Operation unit 56 : Drive unit 58 : Position detector
60: Operating time measurement unit
62: Interval time setting unit 100: Control valve 102: Flowing water detection device 110: Sprinkler control panel

Claims (2)

A plurality of actuated electric valves that open and close by remote operation;
When determining the predetermined start condition in the normal state, activated sequentially controlled to at a predetermined time interval to avoid duplication operation between the fully open position the plurality of operating electric valve and fully closed position operation A control unit,
In the fire extinguishing equipment with
A position detector for detecting the fully closed position and the fully open position in each of the plurality of operating motor operated valves,
The controller is
The plurality of actuated motor valves are sequentially activated and controlled in an inspection state, and the operation time between the fully closed position and the fully opened position is determined for each of the plurality of actuated motor valves based on position detection by the position detector. while measuring the operation time measuring section for detecting a maximum operating time from among a plurality of operation time and the measurement,
An interval time setting unit that sets an interval time determined based on the maximum operation time detected by the operation time measurement unit in the control unit;
Extinguishing systems, characterized in that it comprises a.
In firefighting equipment according to claim 1, wherein the interval time setting unit, the adding predetermined margin time to the maximum operating time, fire extinguishing equipment and obtaining the interval time.

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