JP6181527B2 - Fire extinguishing equipment - Google Patents

Description

The present invention relates to a fire extinguishing equipment that opens a running water detection device by operating a sprinkler head connected to a secondary side pipe filled with a pressurized gas, and supplies primary side pressurized fire extinguishing water to the sprinkler head for discharge.

  Conventionally, as a sprinkler fire extinguishing equipment that discharges fire-fighting water by the operation of a closed sprinkler head due to a fire, a wet sprinkler fire extinguishing equipment in which a secondary side pipe connected to a closed sprinkler head is filled with pressurized fire-fighting water, a sprinkler There is known a wet pre-actuated sprinkler fire extinguishing system that prevents accidental water discharge due to head breakage or the like.

  In addition, fire extinguishing dry sprinklers that are filled with pressurized gas, such as air or inert gas, in the secondary piping to which closed sprinkler heads are connected for property in areas where freezing is expected in winter There is known a dry type pre-actuated sprinkler fire extinguishing equipment that prevents accidental water discharge due to equipment, sprinkler head breakage or the like.

  Here, the dry sprinkler fire extinguishing equipment and the dry pre-acting sprinkler fire extinguishing equipment are filled with, for example, pressurized air in the secondary side piping of the water flow detection device, and when the sprinkler head is opened, wet or wet pre-acting sprinkler fire extinguishing Fire extinguishing water is not sprinkled immediately after operation like equipment, and pressurized gas is released first, and the water flow detector is opened by controlling the differential pressure or motorized valve, and pressurized fire extinguishing water is supplied from the primary side. For this reason, there is a time delay between the opening of the sprinkler head and the discharge of fire-fighting water.

  Therefore, regarding dry sprinkler fire extinguishing equipment and dry pre-actuated sprinkler fire extinguishing equipment, it is legally determined that water can be discharged from the sprinkler head within one minute when the sprinkler head is opened in consideration of a delay in water discharge. In addition, the water source is obliged to provide a capacity 1.5 times that of the wet type.

  Therefore, at the time of facility design, water discharge is started after the sprinkler head is opened due to the volume of the secondary piping of the flowing water detector, the pressure of the gas to be filled, and the ability of the pressurized water supply device such as a fire extinguishing pump. The required water discharge time is calculated, and the facility design is performed so that the required water discharge time is within 1 minute as legally determined.

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

  However, in such conventional dry sprinkler fire extinguishing equipment and dry pre-actuated sprinkler fire extinguishing equipment, the sprinkler head cannot actually be opened and discharged in the maintenance of the equipment. If it is not possible to confirm whether the water can be discharged within the water discharge time, and if the sprinkler head is actually discharged due to a fire, the fire is extinguished and the water discharge is stopped within 1 minute. There is a problem that it is not possible to confirm whether or not the water has been discharged within the required discharge time.

  In addition, the capacity of the water source is obliged to be 1.5 times the wet capacity considering that the required water discharge time is 1 minute at the maximum, but if the actual time required was confirmed, it was less than 1 minute In this case, it is possible to reduce the installation area of the water source tank by reducing the magnification of the volume of the water source according to the shortening of the required time, but since there is no means for checking the required time, the actual required time Even if it is less than 1 minute, it is necessary to secure 1.5 times the capacity of the wet process, which leaves the problem that the area occupied by the water source tank increases.

The present invention provides a wet and wet pre-acting fire extinguishing equipment that can confirm the time required for water discharge from the opening operation of the sprinkler head to the start of water discharge when the secondary side pipe of the water flow detection device is filled with pressurized gas. For the purpose.

(Fire extinguishing equipment)
In the present invention, the primary side pipe of the water flow detection device is filled with pressurized fire-extinguishing water, and the secondary side pipe is connected with a closed sprinkler head to fill with pressurized gas, and the secondary by the operation of the sprinkler head. In the fire extinguishing equipment that opens the flowing water detection device by controlling the differential pressure based on the decompression of the side pipe or the motorized valve, and supplies the sprinkler head with pressurized fire extinguishing water for the primary side pipe,
A head operation detector for detecting the operation of the sprinkler head;
A water discharge start detector for detecting the start of water discharge from the sprinkler head for pressurized fire extinguishing,
A control unit with a signal line connection between the head operation detection unit and the water discharge start detection unit is provided with a time measurement unit that measures the time required for water discharge from detection of head operation by the head operation detection unit to detection of water discharge start by the water discharge start detection unit It is characterized by that.

(Printing and displaying the time required for water discharge)
The time measuring unit outputs the measured time required for water discharge by printing and / or display.

(Measurement of water discharge time by inspection)
When the time measuring unit detects acceptance of an inspection operation by the operating unit, the time measuring unit performs time measurement by controlling the opening of the terminal test motor-operated valve provided at the end of the secondary side pipe.

(Time measurement from depressurization detection to running water detection)
The water flow detector
As the head operation detection unit, a depressurization detector that detects the depressurization of the secondary side pipe due to the operation of the sprinkler head and outputs a depressurization detection signal is provided.
As a water discharge start detection unit, a water flow detector that detects the water flow accompanying the opening operation of the water flow detection device and outputs a water flow detection signal is provided.
A time measurement part starts time measurement, when the pressure reduction detection signal from a pressure reduction detector is input, and when a water flow detection signal from a water flow detector is input, time measurement is complete | finished and water discharge required time is measured.

(Time measurement from decompression detection to recovery pressure detection)
The water flow detector
As the head operation detection unit, a depressurization detector that detects a depressurization at which the pressure of the secondary side pipe by the operation of the sprinkler head is equal to or lower than the first pressure threshold and outputs a depressurization detection signal is provided.
As the water discharge start detection unit, a pressure detector that detects a pressure recovery at which the pressure of the secondary side pipe is equal to or higher than a second pressure threshold value that is lower than the first pressure threshold value and outputs a pressure detection signal is provided.
A time measurement part starts time measurement, when the pressure reduction detection signal from a pressure reduction detector is input, and when time detection signal from a pressure detector is input, time measurement is complete | finished and water discharge required time is measured.

(Time measurement from pressure reduction detection to pressure recovery detection)
The water flow detector
A first depressurization detector for detecting a depressurization of the secondary side pipe due to the operation of the sprinkler head and outputting a first depressurization detection signal;
A second depressurization detector that detects a depressurization lower than the first depressurization detector by a predetermined value and outputs a second depressurization detection signal as a head operation detector;
As a water discharge start detector, a water flow detector that detects the water flow associated with the opening operation of the water flow detection device and outputs a water flow detection signal;
Provided,
The time measuring unit starts time measurement when the second decompression detection signal from the second decompression detector is input, and ends the time measurement when the running water detection signal from the running water detector is input, and the time required for water discharge Measure.

(Time measurement from start of motor valve for terminal test to detection of running water)
The control unit is provided with a test activation detection unit that detects activation control for opening the terminal test motor-operated valve as the head operation detection unit,
The running water detection device is provided with a running water detector that detects the running water accompanying the opening operation of the running water detection device and outputs a running water detection signal as a water discharge start detection unit,
The time measurement unit starts time measurement when the test activation detection unit detects activation control of the end-test motor-operated valve, and when the running water detection signal is input from the running water detector, the time measurement ends and water discharge is required. Measure time.

(Time measurement of multiple sections)
The time measuring unit sequentially controls opening of the terminal-test motor-operated valves provided in the plurality of protection sections with a predetermined interval time, and measures the time required for water discharge in the plurality of protection sections.

(Basic effect)
According to the fire extinguishing equipment of the present invention, the operation of the sprinkler head connected to the secondary pipe of the flowing water detection device filled with the pressurized gas is detected by the head operation detecting unit, and the discharge of the water for pressurized fire extinguishing from the sprinkler head is started. The sprinkler is detected by the water discharge start detection unit, and the time measurement unit provided in the control unit measures the time required for water discharge from detection of head operation by the head operation detection unit to detection of water discharge start by the water discharge start detection unit. It is possible to check the water discharge required time (water discharge delay time) from the head opening operation to water discharge for the actual fire extinguishing equipment, and it satisfies the legally required water discharge time within 1 minute. By confirming this, it is possible to ensure the reliability of fire extinguishing equipment.

  In addition, if the measured water discharge required time is sufficiently short, less than 1 minute, it can be confirmed that the equipment has an early fire extinguishing timing in the event of a fire, and the equipment performance is highly evaluated. Therefore, it is possible to ensure high reliability.

  In addition, when it is confirmed that the required water discharge time from the opening operation of the sprinkler head to the water discharge is, for example, less than 1 minute, the water source capacity that is 1.5 times that of the wet type is multiplied by the reduction time of the required water discharge time. Therefore, it is possible to reduce the area occupied by the water storage tank in the building design. For example, when the required water discharge time measured for the fire extinguishing equipment is 30 seconds, the water source water amount can be made 1.25 times that of the wet type.

(Effect of printing / displaying the time required for water discharge)
In addition, since the time measuring section outputs the measured water discharge required time by printing and / or display, for example, the time required for water discharge printed and / or displayed after a fire can be confirmed, and the operation status of the fire extinguishing equipment can be analyzed. It is possible to provide data necessary for

(Effect of measuring time required for water discharge by inspection)
In addition, when the time measurement unit detects acceptance of an inspection operation by the operation unit, the time measurement unit is configured to perform time measurement by controlling the opening of the terminal test motor valve provided at the end of the secondary side pipe. In addition, the sprinkler head does not actually discharge water, but discharges the pressurized air from the actual secondary pipe and opens the water flow detection device to flow the fire-extinguishing water and discharge the sprinkler. It is possible to check and measure the water discharge time from the opening operation of the head to the water discharge by checking, and if the water discharge time exceeds 1 minute, check and adjust related equipment. It is possible to properly manage the maintenance of fire extinguishing equipment by taking measures such as these.

(Effect of measuring time from detection of reduced pressure to detection of running water)
In addition, the running water detection device is provided with a decompression detector that detects the decompression of the secondary side pipe due to the operation of the sprinkler head and outputs a decompression detection signal as the head operation detection unit, and as the discharge start detection unit, A running water detector that detects running water during the opening operation and outputs a running water detection signal is provided, and the time measurement unit starts time measurement when the decompression detection signal from the decompression detector is input, and from the running water detector When the water flow detection signal is input, the time measurement is terminated and the water discharge delay time is measured. For example, the water discharge using the depressurization detector and the water flow detector provided in the water detection device for dry pre-operation is used. The required time can be easily measured.

  In the case of the dry type, the time required for water discharge can be easily measured by providing a reduced pressure detector in addition to the water flow detector of the dry type water flow detector.

(Effect of measuring time from decompression detection to decompression detection stop)
Further, the flowing water detection device includes a depressurization detector that detects a depressurization of the secondary side pipe due to the operation of the sprinkler head and outputs a depressurization detection signal as a head operation detection unit and a water discharge start detection unit. Time measurement is started when the decompression detection signal from the decompression detector is input, and when the decompression detection signal input from the decompression detector is stopped, the time measurement is terminated and the time required for water discharge is measured. Only the decompression detector that detects the decompression of the secondary pipe of the flowing water detection device makes it possible to easily measure the water discharge time substantially corresponding to the time from the opening operation of the sprinkler head to the start of water discharge.

(Effect of measuring time from pressure reduction detection to pressure recovery detection)
The flowing water detection device is provided with a depressurization detector that detects a depressurization in which the pressure of the secondary side pipe due to the operation of the sprinkler head is equal to or lower than the first pressure threshold and outputs a depressurization detection signal as a head operation detection unit. As a part, a pressure detector is provided that detects a pressure recovery when the pressure of the secondary side pipe is equal to or higher than a second threshold pressure that is higher than the first pressure threshold by a predetermined value, and outputs a pressure detection signal. The time measurement is started when the decompression detection signal is input from the vessel, and when the pressure detection signal from the pressure detector is input, the time measurement is terminated and the water discharge required time is measured. The measurement accuracy can be improved by enabling time measurement closer to the actual time required for water discharge from the opening operation to the start of water discharge.

(Effects of time measurement from start of motor valve for end test to detection of running water)
In addition, the control unit is provided with a test activation detection unit that detects activation control for opening the terminal test motor-operated valve as the head operation detection unit, and the flowing water detection device is opened as the discharge start detection unit. A running water detector that detects the running water during operation and outputs a running water detection signal is provided, and the time measurement unit starts time measurement when the test activation detection unit detects activation control of the electric valve for terminal test. When the running water detection signal from the detector is input, the time measurement is terminated and the time required for water discharge is measured, so the end control motor control valve opening control corresponding to the spurious opening operation of the sprinkler head is started. It is possible to improve the measurement accuracy of the required water discharge time from the opening operation of the sprinkler head to the start of water discharge by detecting the start control shown and starting the measurement of the water discharge required time.

(Effects of time measurement in multiple sections)
In addition, the time measuring unit sequentially controls the terminal test motor valves provided in the plurality of protection sections to be opened at predetermined intervals to measure the time required for water discharge in the plurality of protection sections. When performing, it is possible to check the time required for water discharge from the opening operation of the sprinkler head to water discharge for all the protective sections of the fire extinguishing equipment, as well as regular inspections, as well as daily self-diagnosis of the fire extinguishing equipment. It is possible to correctly perform maintenance management of equipment.

An explanatory diagram showing an outline of a dry 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. 1 and 2 are time charts showing the measurement operation of the time required for water discharge by opening control of the electric valve for terminal test. Explanatory drawing which showed the outline of the pre-actuated valve device which can measure the time required for water discharge by providing a pressure reduction detector and a pressure detector The time chart which showed the measurement operation | movement of the water discharge required time using the pressure reduction detector and pressure detector of FIG. An explanatory diagram showing an outline of a dry sprinkler fire extinguishing system as an example The block diagram which showed embodiment of the functional structure of the fire display board of FIG. 6 and 7 are time charts showing the measurement operation of the time required for water discharge by opening control of the electric valve for terminal test. Explanatory drawing which showed the outline of the pre-actuated valve device which can measure the time required for water discharge by providing a pressure reduction detector and a pressure detector FIG. 9 is a time chart showing the measurement operation of the required water discharge time using the pressure reduction detector and the pressure detector of FIG.

[Outline of dry type pre-actuated sprinkler fire extinguishing equipment]
FIG. 1 is an explanatory view showing an outline of a dry 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 detector 20 is provided in the pressure tank 18, and the pressure detector 20 detects a decompression in which the pressure inside the water supply main pipe 16 has dropped below a specified pressure, and outputs a decompression detection signal to the pump control panel 14. The motor 12 is driven 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 branching portion of the branch pipe 22 is provided with a pre-acting valve device 24 that functions as a pre-actuated water flow detection device. The secondary side branch pipe 22 of the pre-actuating valve device 24 is provided with a closed sprinkler head 26, and the secondary side pipe is filled with pressurized air.

An air compressor 48 is provided for supplying pressurized air to the branch pipe 22 on the secondary side of the pre-actuating valve device 24. The air compressor 48 detects the tank pressure detected by the pressure detector 52 by the compressor control panel 50. The operation is controlled to be constant. Pressurized air by the air compressor 48 is adjusted to a predetermined pressure by the pressure regulating valve 54 and then supplied to the secondary side of the pre-actuating valve 40 through the air check valve 56 by the air pipe 58. The air check valve 56 is closed when the pressure of the air compressor 48 is reduced, and holds the pressurized air in the secondary side pipe.

  Instead of pressurized air, an inert gas such as nitrogen gas filled in a cylinder may be supplied to the branch pipe 22 on the secondary side of the pre-actuating valve 40.

  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 motor-operated valve 28 is provided on the terminal side of the branch pipe 22, and its secondary side is connected to the drain pipe 32 via the orifice 30. Further, an end test valve 29 for manual operation is connected in parallel with the end test electric valve 28.

  The pre-actuating valve device 24 includes a pre-acting valve 40, a motor-operated valve 42 for operation, a pressure reduction detector 44, and a flowing water detector 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. The pressure reduction detector 44 and the flowing water detector 46 use pressure switches.

  When a fire occurs, the fire is detected by the fire detector 36, and when the sprinkler head 26 connected to the secondary side pipe is opened by receiving a hot air current from the fire, pressurized air is released from the activated sprinkler head 26. And depressurize. At this time, the pre-actuating valve control panel 34 controls the opening of the actuating electric valve 42 by the opening control signal (double interlock control) based on the fire detection and the pressure reduction detection, and opens the pre-acting valve 40 by the opening / closing drive mechanism. The pressurized fire-extinguishing water is supplied from the primary side to the secondary side, and the pressurized fire-extinguishing water is discharged from the operating sprinkler head 26. At this time, the flowing water detector 46 detects the flowing water due to the opening of the pre-actuating valve 40, and the pre-acting valve control panel 34 displays the water discharge of the sprinkler head 26.

On the other hand, when the pre-actuating valve 40 is opened, the pressure of the water supply main pipe 16 connected to the primary side also decreases, and this pressure reduction is detected by the pressure detector 20 provided in the pressure tank 18 to control the pump. The panel 14 activates the fire pump 10.

[Configuration of pre-actuated valve control panel]
(Outline of pre-actuated valve control panel)
FIG. 2 is a block diagram showing an embodiment of a functional configuration of a pre-actuated valve control panel that functions as a control panel. As shown in FIG. 2, the pre-actuated valve control panel 34 includes a control unit 60, a liquid crystal display panel 62, a display unit 64, an operation unit 65, and an alarm unit 66, for example, a plurality provided on each floor shown in FIG. 1. A pre-actuated valve device 24 that functions as a pre-actuated running water detection device is connected to each protection section.

  In the pre-actuating valve device 24, the fire detector 36, the pre-acting valve 40, the actuating electric valve 42, the pressure reducing detector 44, the flowing water detector 46 and the terminal test electric valve 28 shown in FIG. Yes. The fire detector 36 and the terminal test motor-operated valve 28 are installed in a protective compartment outside the pre-actuating valve device 24, but are shown in the pre-acting valve device 24 for convenience of explanation.

  The control unit 60 is a function realized by, for example, execution of a program, and uses hardware such as a computer circuit including a CPU, a memory, various input / output ports, and the like.

  A fire sensor 36 provided on the pre-acting valve device 24 side for each protection section is connected to the control unit 60 by a sensor line, and the operation motor operated valve 42, the decompression detector 44, the flowing water detector 46, and the terminal are connected. The test motor-operated valve 28 is connected by a signal line. Note that the pre-actuating valve 40 opens and closes by receiving drainage or supply of pressurized fire-extinguishing water by opening control of the motor-operated valve 42 for the opening / closing drive mechanism.

  The liquid crystal display panel 62 includes a touch panel, displays various screens necessary for the control operation of the pre-actuating valve control panel 34 according to instructions from the control unit 60, and operates the operation buttons on the display screen, thereby requiring the control operations. Allows various operation inputs.

  The display unit 64 is provided with various indicator lights necessary for the control operation of the pre-actuated valve control panel 34. Further, the display unit 64 is provided with a printer so that various information necessary for the control operation of the pre-actuating valve control panel 34 can be printed out. The operation unit 65 is provided with various operation switches necessary for the control operation of the pre-actuating valve control panel 34. The alarm unit 66 is provided with a speaker for outputting a fire alarm and a failure alarm.

(Configuration of control unit)
When the control unit 60 of the pre-actuating valve control panel 34 determines both fire detection by the fire detector 36 and decompression detection by the decompression detector 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. Accordingly, the pre-actuating valve 40 is opened by its opening / closing drive mechanism, and pressurized fire-extinguishing water is supplied from the sprinkler head 26. Control to spray water.

  Further, as another pattern, the control unit 60 detects failure that cannot be detected by the fire detector 36, for example, detection of failure such as transmission failure, disconnection, short circuit, interlock stop, commercial power supply disconnection, and reduced pressure detection by the reduced pressure 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.

(Configuration of time measurement unit)
The time measuring unit 68 provided in the control unit 60 outputs a decompression detection signal corresponding to the detection of the operation of the sprinkler head from the decompression detector 44 functioning as a head operation detection unit, for example, when a fire occurs or when a periodic inspection is performed. Input a flowing water detection signal corresponding to the detection of the sprinkler head water discharge from the flowing water detector 46 functioning as a water discharge start detector, and measure the time when the pressure reduction detection signal from the pressure reduction detector 44 is input. When the running water detection signal from the running water detector 46 is input, the time measurement is finished, and control is performed to measure the time required for water discharge from when the sprinkler head 26 is activated until the water discharge is started.

  In addition, the time measuring unit 68 instructs the printer provided on the display unit 64 to output the measured required water discharge time and prints it out, and also instructs the liquid crystal display panel 62 to display the required water discharge time for measurement. The time required for water discharge can be output and confirmed.

  In addition, when the time measuring unit 68 detects acceptance of the inspection operation using the operation screen of the liquid crystal display panel 62, the time required for the water discharge is controlled by opening the terminal test electric valve 28 provided at the end of the secondary side pipe. Control to measure. In this case, the time measuring unit 68 performs control for measuring the required water discharge time by performing start-up control that outputs an open control signal at a predetermined interval time to the terminal test motor-operated valves 28 provided in a plurality of protection sections. Do. For example, when the time measurement unit 68 controls the opening of the terminal test motor-operated valve 28 in the first protection section in accordance with a predetermined order and finishes measuring the time required for water discharge, the time measuring unit 68 controls the terminal test motor-operated valve 28 to be closed. The control is repeated sequentially.

  Further, when the terminal test motor-operated valve 28 is controlled to open, the pump control panel 14 activates the fire-extinguishing pump 10 by detecting the reduced pressure of the pressure detector 20 provided in the pressure tank 18 by reducing the pressure of the water supply main pipe 16. When the measurement is completed, the pump operation is stopped by operating the pump control panel 14, and the procedure proceeds to the measurement of the time required for water discharge in the next protection section.

  Such a time measurement unit 68 performs the same water discharge operation as when the sprinkler head 26 is operated in a pseudo manner, and measures the time required for water discharge until the sprinkler head 26 is opened to start discharging water for fire extinguishing. Therefore, it is possible to check the actual water extinguishing time (water discharge delay time) from the time when the sprinkler head is released to the time of water discharge, and the time required for water discharge to be within one minute, which is legally required. It is possible to ensure the reliability of fire extinguishing equipment by confirming that it meets the requirements.

  In addition, if the measured water discharge time is sufficiently short, less than 1 minute, it can be confirmed that the fire extinguishing timing is a high-performance fire extinguishing equipment that has an early fire extinguishing timing, which is high for equipment performance. By having an evaluation, it is possible to ensure high reliability.

  In addition, when it is confirmed that the required water discharge time from the opening operation of the sprinkler head 26 to the water discharge is, for example, less than 1 minute, the water source capacity that is 1.5 times the wet water capacity is set according to the shortened time of the required water discharge time. Since the magnification can be reduced and the amount of water in the water source water tank 15 that matches the actual condition of the fire extinguishing equipment is sufficient, it is possible to reduce the area occupied by the water source water tank 15 when constructing a building. For example, when the required water discharge time measured for the fire extinguishing equipment is 30 seconds, it is possible to reduce the amount of water source water, which conventionally required 1.5 times the amount of water source, to 1.25 times the amount of water source water. To do.

(Measurement operation of water discharge required time)
FIG. 3 is a time chart showing the measurement operation of the time required for water discharge performed by controlling the opening of the terminal test motor operated valve by the time measuring unit 68 with respect to FIGS. 1 and 2.

As shown in FIG. 3, the time measuring unit 68 of the pre-actuated valve control panel 34 detects acceptance of an inspection operation, etc., and outputs an opening control signal to the terminal test motor operated valve 28 at time t1 to perform activation control. Then, the pressurized air filling the secondary side branch pipe 22 of the pre-actuating valve device 24 is discharged, and the pressure in the secondary side pipe starts to decrease.

  When the secondary pipe pressure drops to the predetermined pressure threshold value Pth1 at time t2, the pressure reduction detector 44 outputs a pressure reduction detection signal. At this time, based on the pseudo fire detection accompanying the inspection operation, the pre-acting valve control panel 34 The controller 60 controls the opening of the actuating electric valve 42, thereby opening the pre-actuating valve 40, supplying the primary side pressurized fire-extinguishing water to the secondary side branch pipe 22, and opening the terminal test. The test water discharge is performed by flowing the water amount through the drainage pipe 32 through the motor-operated valve 28 and supplying a water amount corresponding to the operation of one sprinkler head 26. By this test water discharge, the water flow detector 46 outputs a water flow detection signal at time t4, and the water discharge operation display is performed on the display unit 64 of the pre-actuated valve control panel 34.

  On the other hand, the opening pressure of the pre-actuating valve 40 accompanying the opening control of the actuating motor operated valve 42 from time t2 also reduces the pressure inside the water supply main pipe 16, and when the pressure falls to a predetermined pressure threshold Pth3 at time t3, the pressure tank 18 The provided pressure detector 20 outputs a decompression detection signal to the pump control panel 14 and starts the fire pump 10. As a result, the internal pressure of the water supply main pipe 16 that has been reduced is recovered, the secondary internal pressure of the pre-actuating valve device 24 is also recovered, and the test water discharge is continued.

  In such test water discharge, the time measurement unit 68 starts time measurement when detecting the input of the pressure reduction detection signal from the pressure reduction detector 44 at time t2, and then the water flow detection signal from the water flow detector 46 at time t4. When the input is detected, the time measurement is terminated, and the time from the time t2 to the time t4 thus measured is output as the water discharge required time Td from when the sprinkler head 26 is operated until the water for fire extinguishing is discharged.

  Here, the time t1 when the terminal test motor-operated valve 28 is controlled to open corresponds to the time when the sprinkler head 26 is opened due to a fire, and the time measurement is started by the pressure reduction detection by the pressure reduction detector 44 at the time t2 immediately thereafter. The time measurement is started at substantially the same timing as the sprinkler head 26 is opened.

  In addition, the flowing water detected by the supply of pressurized fire extinguishing water to the secondary side due to the opening of the pre-actuating valve 40 is detected by the flowing water detector 46 at time t4, and the time measurement is completed. It almost coincides with the water discharge start timing. Therefore, although the required water discharge time is measured by the test water discharge by the open control of the terminal test motor-operated valve 28, the required water discharge time approximately coincides with the time from when the sprinkler head 26 is actually operated until the water for fire extinguishing is discharged. Can be measured accurately.

[Time measurement using only the vacuum detector]
As another embodiment of the time measuring unit 68 provided in the control unit 60 of the pre-actuated valve control panel 34 shown in FIGS. 1 and 2, the time measuring unit 68 includes a decompression detector 44 provided in the pre-actuating valve device 24. The time measurement is started when the pressure reduction detection signal from is input, and when the input of the pressure reduction detection signal from the same pressure reduction detector 44 is stopped, the time measurement is terminated and the water discharge required time is measured.

  That is, as shown in the time chart of FIG. 3, the time measuring unit 68 is provided with a pressure reduction detector 44 provided in the pre-actuating valve device 24 in response to a decrease in the secondary side pipe pressure due to the opening control of the terminal test motor operated valve 28. Detects a pressure decrease that falls to a predetermined threshold pressure Pth1 at time t2, detects the input of a pressure reduction detection signal, starts time measurement, and starts the fire pump 10 based on a decrease in water supply main pressure at time t3 The time measurement is terminated when the secondary side pipe pressure that has started to rise due to the recovery to the predetermined pressure threshold value Pth1 at time t5 and the stop of the input of the pressure reduction detection signal is detected, and from time t2 thus measured to t5 Is output as a water discharge required time Td2 from when the sprinkler head 26 is operated to when water for fire extinguishing is discharged.

  Thus, by measuring the time required for water discharge Td2 from the time from the start to the end of the pressure reduction detection by the same pressure reduction detector 44, the configuration can be simplified. Further, the required water discharge time Td2 in this case is a slightly longer time than the required water discharge time Td by time measurement from the pressure reduction detection by the pressure reduction detector 44 to the water flow detection by the water flow detector 46. In addition, it is possible to measure the time required for water discharge that approximately coincides with the time from when the sprinkler head 26 is operated until the water for fire extinguishing is discharged.

  In addition, if the pressure threshold value for detecting the decompression recovery of the decompression detector 44 is set to a value lower than Pth1, it is possible to measure the time required for water discharge with the same accuracy as when combined with the flowing water detector 46.

[Measurement of time from start-up control of terminal-end motorized valve to detection of running water]
As another embodiment of the time measuring unit 68 provided in the control unit 60 of the pre-actuated valve control panel 34 shown in FIGS. 1 and 2, the time measuring unit 68 outputs an open control signal to the terminal test motor-operated valve 28. When time is detected, time measurement is started, and thereafter, when input of a running water detection signal from the running water detector 46 is detected, the time measurement is terminated and control for measuring the required water discharge time is performed.

  That is, as shown in the time chart of FIG. 3, time measurement is started when the output of the opening control signal for opening control of the terminal test motor-operated valve 28 at time t1 is detected, and from the flowing water detector 46 at time T4. When the input of the flowing water detection signal is detected, the time measurement is terminated, the time from the time t1 to the time t4 is measured, and the time required to discharge the fire-extinguishing water from when the sprinkler head 26 is operated is output.

  Thus, by starting the time measurement at the start timing of the opening control of the terminal test motor-operated valve 28, the time measurement can be started at the timing corresponding to the opening operation of the sprinkler head 26, and the sprinkler head 26 is actually It is possible to measure the time required for water discharge closer to the time from when the water is fired to when water for fire extinguishing is discharged.

  Further, by detecting the start timing of the opening control of the terminal test motor-operated valve 28, a sensor such as a decompression detector is not required, and the configuration can be simplified.

[Start of time measurement from detection of decompression to detection of recovery pressure]
FIG. 4 is an explanatory diagram showing an outline of a pre-acting valve device for providing a decompression detector for detecting decompression and a pressure detector for detecting pressure recovery to start measuring the time required for water discharge.

  As shown in FIG. 4, the pre-actuating valve device 24 includes a pre-acting valve 40, a motor-operated valve 42, a pressure reduction detector 44, and a flowing water detector 46, as in the embodiment of FIG. 1. The branch pipe 22 is filled with pressurized air supplied from the air pipe 58.

  In addition to this, in the embodiment of FIG. 4, a pressure detector 45 is further provided for detecting pressure recovery after the pressure in the secondary branch pipe 22 is reduced. A second pressure threshold value Pth2 for detecting a pressure higher than the first pressure threshold value Pth1 detected by the reduced pressure detector 44 is set. For example, the first pressure threshold value Pth1 is 0.05 MPa, while the second pressure threshold value Pth2 is set to 0.1 MPa.

  FIG. 5 is a time chart showing the measurement operation of the time required for water discharge performed by controlling the opening of the terminal test electric valve by the time measuring unit 68 in the case where the pressure reduction detector 44 and the pressure detector 45 of FIG. 4 are provided. is there.

As shown in FIG. 5, when the time measuring unit 68 of the pre-actuating valve control panel 34 detects acceptance of an inspection operation or the like and performs start-up control of the terminal test motor-operated valve 28 at time t1, the pre-acting valve device 24 is activated. The pressurized air filled in the secondary side branch pipe 22 is discharged, and the pressure in the secondary side pipe starts to decrease.

  When the secondary side pipe pressure falls below a predetermined second pressure threshold value Pth2 at time t2, the pressure detector 45 that has been turned on until then is turned off. Subsequently, when the secondary side pipe pressure decreases to the first threshold pressure Pth1 at time t3, the decompression detector 44 outputs a decompression detection signal, and based on the pseudo fire detection accompanying the inspection operation, the pre-actuated valve control panel 34 The controller 60 controls the opening of the actuating motor valve 42 to open the pre-actuating valve 40, supplies the primary side pressurized fire-extinguishing water to the secondary side branch pipe 22, and opens the terminal test motor. A test water discharge is performed in which the water flows through the valve 28 to the drain pipe 32 and the amount of water corresponding to the operation of one sprinkler head 26 is activated.

  By this test water discharge, the water flow detector 46 outputs a water flow detection signal at time t5, and the water discharge operation is displayed on the display unit 64 of the pre-actuated valve control panel 34. Further, when the pre-actuating valve 40 is opened according to the opening control of the actuating electric valve 42 from time t3, the pressure in the water supply main pipe 16 is also reduced, and when the pressure falls to a predetermined pressure threshold value Pth3 at time t4, the pressure detector 20. Outputs a decompression detection signal to the pump control panel 14 and starts the fire pump 10.

  When the fire pump 10 is started, the pressure of the water supply main pipe 16 begins to recover, and the pressure in the secondary pipe is also recovered along with this, and at time t6, the pressure reduction detector 44 is turned off exceeding the first pressure threshold Pth1. Subsequently, at time t7, the second pressure threshold Pth2 is reached and the pressure detector 45 is turned on.

  In such test water discharge, the depressurization detector 44 at time t3 outputs a depressurization detection signal, and the time measuring unit 68 starts time measurement when detecting the input of the depressurization detection signal from the depressurization detector 44 at time t3. Thereafter, when the input of the pressure detection signal from the pressure detector 45 that detected the pressure recovery at the time t7 is detected, the time measurement is finished, and the time from the time t3 to the time t7 is measured from when the sprinkler head 26 is operated. It outputs as the time required for water discharge Td until water for fire extinguishing is discharged.

  Since the measurement of the required water discharge time is started by detecting the pressure reduction by the pressure reduction detector 44 and the time measurement is ended by detecting the recovery pressure by the pressure detector 45, the water discharge is actually performed after the sprinkler head is activated. It becomes possible to measure the time required for water discharge closer to the time until the start with high accuracy.

[Outline of dry sprinkler fire extinguishing equipment]
FIG. 6 is an explanatory view showing an outline of a dry sprinkler fire extinguishing facility as another example of the fire extinguishing facility of the present invention. As shown in FIG. 6, a fire extinguishing pump 10, a motor 12, a pump control panel 14, and a water source water tank 15 are provided in a pump room such as a basement floor of a building, and are driven by a motor 12 that is controlled by the pump control panel 14. The fire pump 10 sucks fire-extinguishing water from the water source tank 15 and pressurizes and supplies it to the water supply main pipe 16.

  A pressure tank 18 is provided for the fire pump 10, and a pressure detector 20 provided in the pressure tank 18 detects a pressure reduction in the water supply main pipe 16 and outputs a pressure reduction detection signal to the pump control panel 14. 12 is driven 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, and a flowing water detection device 70 is provided at a branch portion of the branch pipe 22. A closed-type sprinkler head 26 is provided in the secondary side branch pipe 22 of the flowing water detector 70, and the secondary side pipe is filled with pressurized air.

An air compressor 48 is provided to supply pressurized air to the branch pipe 22 on the secondary side of the flowing water detector 70, and the air compressor 48 keeps the tank pressure detected by the pressure detector 52 by the compressor control panel 50 constant. Control the operation so that Pressurized air by the air compressor 48 is adjusted to a predetermined pressure by the pressure regulating valve 54 and then supplied to the secondary side of the flowing water detection device 70 through the air check valve 56 by the air pipe 58. The air check valve 56 is closed when the pressure of the air compressor 48 is reduced, and holds the pressurized air in the secondary pipe. Instead of the pressurized air, an inert gas such as nitrogen gas filled in a cylinder may be supplied to the branch pipe 22 on the secondary side of the water flow detector 70.

The flowing water detection device 70 includes a main valve 72, a decompression detector 74, and a flowing water detector 76. The valve 72 is closed in a normal monitoring state, and the sprinkler head 26 is opened to release compressed air filled in the secondary branch pipe 22 to reduce the pressure in the pipe. The decompression detector 74 detects this decompression and outputs a decompression detection signal to a fire display panel 78 that functions as a control panel, and the fire display panel 78 performs a fire display.

  When the secondary side branch pipe 22 is depressurized, the valve body of the main valve 72 is opened by the pressure difference from the pressurized fire-extinguishing water filled in the primary side, and the pressure is increased from the primary side to the secondary side. Fire extinguishing water is supplied and discharged from the sprinkler head 26. When the main valve 72 is opened, the flowing water detector 76 outputs a flowing water detection signal to a fire display panel 78 that functions as a control panel, and the fire display panel 78 performs a water discharge display.

On the other hand, when the main valve 72 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 detector 20 provided in the pressure tank 18 to control the fire pump. The panel 14 activates the pump 10.

[Composition of fire display panel]
(Overview of fire display panel)
FIG. 7 is a block diagram showing an embodiment of a functional configuration of a fire display panel functioning as a control panel. As shown in FIG. 7, the fire display panel 78 includes a control unit 80, a liquid crystal display panel 82, a display unit 84, an operation unit 85, and an alarm unit 86, and a plurality of protection units provided on each floor shown in FIG. 6, for example. A flowing water detection device 70 is connected to each section.

  In the flowing water detection device 70, the main valve 72, the decompression detector 74, the flowing water detector 76, and the terminal test electric valve 28 shown in FIG. Although the terminal test motor-operated valve 28 is installed in a protective compartment outside the flowing water detection device 70, it is shown in the flowing water detection device 70 for convenience of explanation.

  The control unit 80 is a function realized by executing a program, for example, and uses, as hardware, a computer circuit having a CPU, a memory, various input / output ports, and the like.

  A decompression detector 74 and a running water detector 76 provided on the side of the running water detection device 70 for each protection section are connected to the control unit 80 by signal lines.

  The liquid crystal display panel 82 includes a touch panel, displays various screens necessary for the control operation of the fire display panel 78 according to instructions from the control unit 80, and operates various buttons necessary for the control operation by operating the operation buttons on the display screen. Allows operation input.

  The display unit 84 is provided with various indicator lights necessary for the control operation of the fire display board 78. Further, the display unit 84 is provided with a printer so that various information necessary for the control operation of the fire display panel 78 can be printed out. The operation unit 85 is provided with various operation switches necessary for the control operation of the fire display board 78. The alarm unit 86 is provided with a speaker for acoustically outputting a fire alarm and a failure alarm.

(Configuration of control unit)
When the control unit 80 of the fire display panel 78 detects the input of the decompression detection signal from the decompression detector 74 of the flowing water detection device 70 provided for each protection section, the control unit 80 displays the representative fire on the display unit 84 and displays the liquid crystal. Display control for displaying the district fire on the display panel 82 is performed.

  In addition, when the controller 80 detects the input of the water flow detection signal from the water flow detector 76 of the water flow detector 70 provided for each protection section, the control unit 80 displays the water discharge representative on the display unit 84, and the liquid crystal display panel 82. Display control to display the district water discharge.

(Configuration of time measurement unit)
The time measuring unit 88 provided in the control unit 80, when performing a fire or performing a periodic inspection, for example, outputs a decompression detection signal corresponding to the detection of the operation of the sprinkler head from the decompression detector 74 functioning as a head operation detection unit. A flow detection signal corresponding to the detection of the start of water discharge from the sprinkler head is input from the water flow detector 76 functioning as a water discharge start detector, and the pressure reduction detection signal from the pressure reduction detector 74 is input. In this case, the time measurement is started, and when the water flow detection signal from the water flow detector 76 is input, the time measurement is finished, and the time required for water discharge from the start of the sprinkler head 26 to the start of water discharge is measured. Take control.

  In addition, the time measuring unit 88 instructs the printer provided on the display unit 84 to output the measured required water discharge time and prints it out, and also instructs the liquid crystal display panel 82 to display the required water discharge time. The time required for water discharge can be output and confirmed.

Further, when the time measuring unit 88 detects acceptance of the inspection operation using the operation screen of the liquid crystal display panel 82, the time required for the water discharge is controlled by opening the terminal test electric valve 28 provided at the end of the secondary side pipe. Control to measure. In this case, the time measuring unit 88 performs start-up control that outputs an opening control signal at a predetermined interval time with respect to the terminal test motor-operated valves 28 provided in the plurality of protection sections, and sequentially controls the required water discharge time. I do.

  The time measurement unit 88 performs the same test water discharge as when the sprinkler head 26 is operated in a pseudo manner, and measures the time required for the water discharge until the sprinkler head 26 is opened to start the discharge of fire-fighting water. As a result, it is possible to check the water discharge required time (water discharge delay time) from the time when the sprinkler head 26 is released to the time of water discharge to the actual fire extinguishing equipment, and the time required for water discharge to be within one minute legally required. By confirming that the above is satisfied, it is possible to ensure the reliability of fire extinguishing equipment.

  In addition, if the measured water discharge required time is sufficiently short, less than 1 minute, it can be confirmed that the equipment has an early fire extinguishing timing in the event of a fire, and the equipment performance is highly evaluated. Therefore, it is possible to ensure high reliability.

  In addition, when it is confirmed that the required water discharge time from the opening operation of the sprinkler head 26 to the water discharge is, for example, less than 1 minute, the water source capacity that is 1.5 times the wet water capacity is set according to the shortened time of the required water discharge time. Since the magnification can be reduced and the amount of water in the water source water tank 15 that matches the actual condition of the fire extinguishing equipment is sufficient, it is possible to reduce the area occupied by the water source water tank 15 when constructing a building.

(Time measurement operation from depressurization detection to running water detection)
FIG. 8 is a time chart showing the measurement operation of the required water discharge time performed by controlling the opening of the terminal test motor operated valve 28 by the time measuring unit 88 with respect to FIGS. 6 and 7.

  As shown in FIG. 8, when the time measuring unit 88 of the fire display panel 78 detects acceptance of an inspection operation or the like and outputs an open control signal to the terminal test motor-operated valve 28 at time t <b> 1 to perform start control, Pressurized air filling the secondary side branch pipe 22 of the flowing water detection device 70 is discharged, and the pressure in the secondary side pipe starts to decrease.

  When the secondary side pipe pressure drops to a predetermined threshold pressure Pth1 at time t2 due to this pressure reduction, the pressure reduction detector 74 outputs a pressure reduction detection signal, and the control unit 80 of the fire display panel 78 performs a fire display. Further, the valve body of the main valve 72 is opened by the differential pressure generated by the pressure reduction on the secondary side pipe, and the primary side pressurized fire-extinguishing water is supplied to the secondary side branch pipe 22 and is opened. A test water discharge is performed in which the water is supplied to the drain pipe 32 via the motor-operated valve 28 and the amount of water corresponding to the operation of one sprinkler head 26 is operated. With this test water discharge, the water flow detector 76 outputs a water flow detection signal at time t4, and the fire display panel 78 performs water discharge display.

  On the other hand, the pressure in the water supply main pipe 16 is also reduced by the test water discharge, and when the pressure falls to a predetermined pressure threshold Pth3 at time t3, the pressure detector 20 provided in the pressure tank 18 outputs a pressure reduction detection signal to the pump control panel 14, The fire pump 10 is started. As a result, the internal pressure of the water supply main pipe 16 that has been reduced is recovered, and the secondary internal pressure of the water flow detector 70 is also recovered, and the test water discharge is continued.

  In such test water discharge, the time measurement unit 88 starts time measurement when detecting the input of the pressure reduction detection signal from the pressure reduction detector 74 at time t2, and then the water flow detection signal from the water flow detector 76 at time t4. When the input is detected, the time measurement is terminated, and the time from the time t2 to the time t4 thus measured is output as the water discharge required time Td from when the sprinkler head 26 is operated until the water for fire extinguishing is discharged.

  Here, the time t1 at which the terminal test motor-operated valve 28 is controlled to open corresponds to the time at which the sprinkler head 26 is opened due to a fire, and the time measurement is started by the pressure reduction detection by the pressure reduction detector 74 at the time t2 immediately thereafter. The time measurement is started at substantially the same timing as the sprinkler head 26 is opened.

  Further, the flow measurement by the flow water detector 76 at the time t4 is detected by the flow of water due to the supply of pressurized fire extinguishing water to the secondary side due to the opening based on the differential pressure of the valve 72, and the time measurement is finished, and the time t4 is activated. It substantially coincides with the water discharge start timing from the sprinkler head 26. Therefore, although the required water discharge time is measured by the test water discharge by the open control of the terminal test motor-operated valve 28, the required water discharge time approximately coincides with the time from when the sprinkler head 26 is actually operated until the water for fire extinguishing is discharged. Can be measured accurately.

[Time measurement using only the vacuum detector]
As another embodiment of the time measuring unit 88 provided in the control unit 80 of the fire display panel 78 shown in FIGS. 6 and 7, the time measuring unit 88 is supplied from the decompression detector 74 provided in the pre-actuating valve device 24. Time measurement is started when a decompression detection signal is input, and when the input of the decompression detection signal from the same decompression detector 74 is stopped, the time measurement is terminated and control for measuring the required water discharge time is performed.

  That is, as shown in the time chart of FIG. 8, the time measurement unit 88 is provided with a pressure reduction detector 74 provided in the flowing water detection device 70 against the decrease in the secondary side pipe pressure due to the opening control of the end test release valve 28. Time detection is started by detecting the input of a pressure reduction detection signal when a pressure drop that falls to a predetermined threshold pressure Pth1 is detected at time t2, and the fire pump 10 is activated based on the drop in the water supply main pipe pressure at time t3. When the secondary side pipe pressure that has started to rise is restored to the predetermined pressure threshold value Pth1 at time t5 and the stop of the input of the pressure reduction detection signal is detected, the time measurement is terminated, and from the time t2 to t5 thus measured. Is output as a required water discharge time Td2 from when the sprinkler head 26 is operated until the water for fire extinguishing is discharged.

  Thus, by measuring the water discharge required time Td2 from the time from the start to the end of the pressure reduction detection by the same pressure reduction detector 74, the configuration can be simplified. Further, the required water discharge time Td2 in this case is a slightly longer time than the required water discharge time Td by time measurement from the pressure reduction detection by the pressure reduction detector 74 to the water flow detection by the water flow detector 76. In addition, it is possible to measure the time required for water discharge that approximately coincides with the time from when the sprinkler head 26 is operated until the water for fire extinguishing is discharged.

  Further, if the pressure threshold value for detecting the decompression recovery of the decompression detector 74 is set to a value lower than Pth1, the water discharge required time can be measured with the same accuracy as the combination with the flowing water detector 76.

[Measurement of time from start-up control of terminal-end motorized valve to detection of running water]
As another embodiment of the time measuring unit 88 provided in the control unit 80 of the fire display panel 78 shown in FIGS. 6 and 7, the time measuring unit 88 detects the output of the open control signal to the terminal test motor-operated valve 28. In this case, the time measurement is started, and thereafter, when the input of the water flow detection signal from the water flow detector 76 is detected, the time measurement is finished and the control for measuring the water discharge required time is performed.

  That is, as shown in the time chart of FIG. 8, when the output of the opening control signal for controlling the opening of the end test opening valve 28 at time t1 is detected, time measurement is started, and from the flowing water detector 76 at time t4. When the input of the flowing water detection signal is detected, the time measurement is terminated, the time from the time t1 to the time t4 is measured, and the time required to discharge the fire-extinguishing water from when the sprinkler head 26 is operated is output.

  Thus, by starting the time measurement at the start timing of the opening control of the terminal test motor-operated valve 28, the time measurement can be started at the timing corresponding to the opening operation of the sprinkler head 26, and the sprinkler head 26 is actually It is possible to measure the time required for water discharge closer to the time from when the water is fired to when water for fire extinguishing is discharged.

  Further, by detecting the start timing of the opening control of the terminal test motor-operated valve 28, a sensor such as a decompression detector is not required, and the configuration can be simplified.

[Time measurement based on pressure reduction detection and pressure recovery detection]
FIG. 9 is an explanatory diagram showing an outline of a flowing water detection apparatus for providing a decompression detector and a pressure detector to measure the time required for water discharge.

  As shown in FIG. 9, the flowing water detection device 70 includes a main valve 72, a reduced pressure detector 74 that functions as a first reduced pressure detector, and a flowing water detector 76 as in the embodiment of FIG. 6. The branch pipe 22 is filled with pressurized air supplied from the air pipe 58.

  In addition to this, in the embodiment of FIG. 9, a pressure detector 75 for detecting the recovery of the pressure in the secondary branch pipe 22 is newly provided. The pressure detector 75 is a decompression detector. In contrast to the first pressure threshold value Pth1 for detecting depressurization at 74, for example 0.05 MPa, a second pressure threshold value Pth2 for detecting a recovery pressure higher than this, for example, 0.1 MPa is set.

  FIG. 10 is a time chart showing the water discharge time measurement operation performed by controlling the opening of the terminal test motor-operated valve by the time measuring unit 88 when the pressure reduction detector 74 and the pressure detector 75 of FIG. 9 are provided. is there.

  As shown in FIG. 10, when the time measuring unit 88 of the fire display panel 78 detects acceptance of an inspection operation or the like and performs activation control of the terminal test motor-operated valve 28 at time t <b> 1, the secondary of the flowing water detection device 70. The pressurized air filled in the side branch pipe 22 is discharged, and the pressure in the secondary side pipe starts to decrease.

  When the secondary side pipe pressure falls below the second pressure threshold value Pth2 at time t2, the pressure detector 75 that has been turned on until then is turned off, and then at time t3, the secondary side pipe pressure becomes equal to or lower than the first pressure threshold value Pth1. Then, the depressurization detector 74 is turned on to output a depressurization output signal, and the fire display board 78 displays a fire. Also, the valve body of the main valve 72 is opened by the differential pressure generated by the pressure reduction of the secondary branch pipe 22, and the primary pressurized fire extinguishing water is supplied to the secondary branch pipe 22 and opened. The drainage pipe 32 is passed through the terminal test motor-operated valve 28, and the test water discharge is performed so that the amount of water corresponding to one sprinkler head 26 is activated.

  With this test water discharge, the water flow detector 76 outputs a water flow detection signal at time t5, and the fire display panel 78 performs water discharge display. Further, the pressure in the water supply main pipe 16 is also reduced by the test water discharge, and when the pressure falls to the predetermined pressure threshold value Pth3 at time t4, the pressure detector 20 outputs a pressure reduction detection signal to the pump control panel 14 and starts the fire pump 10. .

  When the fire pump 10 is started, the pressure of the water supply main pipe 16 starts to recover, and the pressure in the secondary pipe is also recovered along with this. At time t6, the pressure reduction detector 74 is turned off exceeding the first pressure threshold Pth1. Subsequently, at time t7, the second pressure threshold value Pth2 is reached and the pressure detector 75 is turned on.

. In such test water discharge, the time measurement unit 88 starts time measurement when detecting the input of the pressure reduction detection signal from the pressure reduction detector 74 at time t3, and then the pressure detector 75 that has detected pressure recovery at time t7. When the input of the pressure detection signal from is detected, the time measurement is terminated, and the measured time from time t3 to t7 is output as the required water discharge time Td from when the sprinkler head 26 operates until the water for fire extinguishing is discharged.

  Since the measurement of the time required for water discharge is started by detecting the pressure reduction by the pressure reduction detector 74 and the time measurement is ended by detecting the recovery pressure by the pressure detector 75, the water discharge is actually performed after the sprinkler head is activated. It becomes possible to measure the time required for water discharge closer to the time until the start with high accuracy.

[Modification of the present invention]
(Measurement of water discharge time due to fire)
In the above embodiment, the time required for water discharge from the operation of the sprinkler head to water discharge in the case of periodic inspection is measured. The time required is measured and printed and / or displayed and output is controlled so that the fire extinguishing equipment can discharge the fire within 1 minute from the measured water discharge required time. Enables proper verification of fire extinguishing ability by equipment.

(Self-diagnosis control)
The above embodiment measures the time required for water discharge from the operation of the sprinkler head to the time of water discharge in the case of periodic inspection, but the pre-actuated valve control panel that functions as a control panel and the fire display panel perform routinely. As a diagnostic function, a function for measuring the time required for water discharge is provided, which enables proper maintenance management of fire extinguishing equipment.

(End test valve)
In the above embodiment, the terminal test motor valve is provided in parallel with the terminal test valve so that the water discharge test is performed remotely. However, only the terminal test valve is used, and the terminal test valve is opened to open the test water. The required time may be measured.

(Single interlock)
The dry pre-actuated sprinkler fire extinguishing equipment of the above embodiment outputs an open control signal to the operating motorized valve when both the fire detection by the fire detector and the decompression detection by the decompression detector are determined, and the open control is performed. For example, double interlock control that opens the pre-actuating valve by sprinkler head and sprinkles pressurized fire-fighting water from the sprinkler head is an example. The same applies to the single interlock control in which the output is controlled to open and the pre-actuating valve is opened by the open control to spray pressurized fire-fighting water from the sprinkler head.

  In the case of this single interlock, in addition to the pattern in which an open control signal is output to the motorized valve for operation when a fire is detected by the fire detector, the failure detection that cannot be detected by the fire detector, such as transmission failure, disconnection, etc. When a failure detection such as short circuit, interlocking stop, commercial power supply interruption, etc. is determined, an opening control signal is output to the operating motorized valve 42 to perform opening control, and the pre-actuating valve device 24 is opened by the opening control, and the sprinkler Water for fire extinguishing is discharged from the head.

(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: Pre-acting valve device 28: Terminal test motor-operated valve 34: Pre-acting valve control panel 36: Fire detector 40: Pre-acting valve 42: Actuating motor-operated valve 44, 74: Decompression detector 45, 75: Pressure detector 46, 76: Flowing water detector 48: Air compressor 50: Compressor control panel 60, 80: Control unit 62, 82: Liquid crystal display panel 64, 84: Display unit 65, 85: Operation unit 68, 88: Time measuring unit 70: Flowing water detection device 72: Main valve 78: Fire display panel

Claims (8)

The primary side pipe of the water flow detector is filled with pressurized fire-extinguishing water, and the secondary side pipe is connected to a closed sprinkler head and filled with pressurized gas, and the secondary side pipe is activated by the operation of the sprinkler head. In the fire extinguishing equipment which opens the flowing water detection device by controlling the differential pressure based on the pressure reduction of the pressure or the motor operated valve and supplies the pressurized fire extinguishing water of the primary side pipe to the sprinkler head to discharge the water.
A head operation detector for detecting the operation of the sprinkler head;
A water discharge start detection unit for detecting the water discharge start of the water for pressurized fire extinguishing from the sprinkler head;
A control unit in which the head operation detection unit and the water discharge start detection unit are connected to each other by signal lines is connected to measure the time required for water discharge until the water discharge start is detected by the water discharge start detection unit after the head operation detection unit detects the head operation. Fire extinguishing equipment characterized by a time measurement unit.
2. The fire extinguishing equipment according to claim 1, wherein the time measuring unit outputs the measured time required for water discharge by printing and / or display.
2. The fire extinguishing equipment according to claim 1, wherein when the time measuring unit detects acceptance of an inspection operation by the operating unit, the time measuring unit controls the opening of the terminal test motor-operated valve provided at the end of the secondary side pipe. Fire extinguishing equipment characterized by measuring.
In the fire extinguishing equipment according to claim 1,
The flowing water detection device is
As the head operation detection unit, a depressurization detector that detects the depressurization of the secondary side pipe due to the operation of the sprinkler head and outputs a depressurization detection signal is provided,
As the water discharge start detection unit, a water flow detector that detects the water flow accompanying the opening operation of the water flow detection device and outputs a water flow detection signal is provided,
The time measurement unit starts the time measurement when a pressure reduction detection signal from the pressure reduction detector is input, and ends the time measurement when the water flow detection signal from the flow water detector is input to stop the water discharge. Fire extinguishing equipment characterized by measuring the required time.
In the fire extinguishing equipment according to claim 1,
The water flow detection device is provided with a decompression detector that detects a decompression of the secondary side pipe due to the operation of the sprinkler head and outputs a decompression detection signal as the head operation detection unit and the water discharge start detection unit,
The time measurement unit starts time measurement when a decompression detection signal from the decompression detector is input, and ends the time measurement when input of the decompression detection signal from the decompression detector is stopped. Fire extinguishing equipment characterized by measuring the time required for water discharge.
In the fire extinguishing equipment according to claim 1,
The flowing water detection device is
As the head operation detection unit, a depressurization detector that detects a depressurization at which the pressure of the secondary side pipe due to the operation of the sprinkler head is equal to or lower than a first pressure threshold and outputs a depressurization detection signal is provided
As the water discharge start detection unit, a pressure detector that detects a pressure recovery at which the pressure of the secondary side pipe is equal to or higher than a second pressure threshold value that is higher than the first pressure threshold value by a pressure detection signal is provided.
The time measurement unit starts the time measurement when a pressure reduction detection signal from the pressure reduction detector is input, and ends the time measurement when the pressure detection signal from the pressure detector is input, and the water discharge Fire extinguishing equipment characterized by measuring the required time.
In the fire extinguishing equipment according to claim 3,
The control unit is provided with a test activation detection unit that detects activation control for opening the terminal test motor-operated valve as the head operation detection unit,
The flowing water detection device is provided with a flowing water detector that detects the flowing water accompanying the opening operation of the flowing water detection device and outputs a flowing water detection signal as the water discharge start detection unit.
The time measurement unit starts time measurement when the test activation detection unit detects activation control of the terminal test motor-operated valve, and ends time measurement when a flowing water detection signal is input from the flowing water detector. And the fire extinguishing equipment characterized by measuring the time required for water discharge.
In the fire extinguishing equipment according to claim 3,
The time measuring unit sequentially controls opening of the end-test motor-operated valves provided in a plurality of protection sections with a predetermined interval time, and measures the time required for water discharge in the plurality of protection sections. Fire extinguishing equipment.

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