JP6199695B2 - Fire extinguishing equipment - Google Patents

Description

The present invention relates to a 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 the 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.

  Moreover, the pressure regulation function which maintains the pressure-extinguishing water filled with the secondary side piping of the pre-acting valve apparatus which connected the sprinkler head, or the filled compressed air at the regulation pressure is provided. The pressure adjustment function when the secondary side pipe is filled with pressurized fire extinguishing water is equipped with a pressure regulating motor valve in parallel with the pre-actuating valve device, and before the pressure switch for pressure reduction detection that detects pressure reduction due to the operation of the sprinkler head. The pressure adjustment pressure switch that detects the pressure reduction is provided. When the pressure adjustment pressure switch is activated by detecting the pressure reduction of the secondary side pipe, the pressure adjustment motor valve is controlled to open, and the primary side pressure-extinguishing water is supplied to the secondary side. It is supplied to the piping to keep the specified pressure.

In addition, the pressure adjustment function when the secondary side pipe is filled with pressurized water for pressurized fire extinguishing is the pressure adjustment pressure switch for detecting the pressure reduction before the pressure reduction detection pressure switch for detecting the pressure reduction due to the operation of the sprinkler head. When the pressure adjustment pressure switch is operated by detecting the pressure reduction of the secondary side pipe, the compressor is started and controlled, and the pressurized air is supplied to the secondary side pipe to maintain the specified pressure.

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

  However, in such a fire extinguishing facility provided with a pressure regulating function for keeping the pressure of the secondary side pipe at a specified pressure, it is possible to grasp when and under what circumstances the pressure regulating function is operated. Therefore, there is a possibility that the maintenance of facilities will be hindered.

  For example, when the pressure regulation function is operating frequently, the degree of sealing of the secondary side pipe has decreased for some reason, and if left as it is, pressurized fire extinguishing water from the secondary side pipe There is a problem that the operation of the adjusting function needs to be carefully monitored, but this cannot be done.

  In addition, the frequency at which the pressure adjustment function operates may depend on the environmental temperature.Therefore, it is expected that the operation status of the adjustment function will vary depending on the season. Since the operation status is unclear, the maintenance of the pressure regulating motor-operated valve and the compressor is also far from the actual operation status, and if the operation frequency is high, there is a possibility that the periodic inspection cannot sufficiently cope.

An object of this invention is to provide the fire extinguishing equipment which can grasp | ascertain the operation condition of the pressure regulation function in the secondary side piping of the pre-acting valve apparatus which connected the sprinkler head, and enables appropriate maintenance management of an installation.

(Fire extinguishing equipment)
The present invention provides a fire extinguishing equipment,
For each of several protective compartments,
A closed sprinkler head;
A fire detector for detecting a fire in the protective compartment;
Secondary side with the primary side is connected to the water supply pipe is connected to the sprinkler head through the secondary pipe, pre actuation opening is remotely controlled, supplying pressurized圧消fire water of the feed water pipe in the secondary side piping A valve ,
A secondary pressure adjusting unit that operates under remote control and fills the secondary side pipe with pressurized fire-extinguishing water in the water supply pipe or fills the secondary side pipe with the specified pressure by filling with pressurized air; ,
A depressurization detector for detecting depressurization of the secondary side pipe due to the opening operation of the sprinkler head;
Before vacuum detection by vacuum detector, a pressure regulating vacuum detector for detecting the pressure reduction of secondary pipe,
When the decompression detection by the decompression detector for pressure regulation is discriminated in the steady monitoring state, the secondary pressure adjusting unit is operated by remote control to restore the pressure of the secondary side piping to the specified pressure, and is provided in the protection section. When the fire detection by the fire detector, or the fire detection by the fire detector and the decompression detection by the decompression detector, is discriminated, the pre-actuated valve is opened by remote control and the pressurized fire extinguishing water of the water supply pipe is put into the secondary side pipe And a control unit that sprinkles the supplied pressurized fire-extinguishing water when the sprinkler head is opened.
A pressure adjustment monitoring unit that counts the number of operations of the secondary pressure adjustment unit and displays the number of operations on the display unit when the acceptance of the pressure adjustment information display operation is detected;
It is provided with.

(Number of operation of motor for regulating pressure)
The secondary pressure adjusting unit is an electric valve for regulating pressure that supplies pressurized fire extinguishing water of the water supply pipe to the secondary side pipe by open control.
When it is determined that the pressure reduction is detected by the pressure adjustment detector, the control unit controls the opening of the pressure adjustment electric valve to restore the pressure of the secondary side pipe to the specified pressure, and the pressure reduction detection by the pressure adjustment detector is restored. When the pressure is detected, the pressure regulating motor is controlled to close,
The pressure adjustment monitoring unit counts the number of operations of the pressure adjustment motorized valve and / or pressure reduction detector when the acceptance of the reset operation is detected and detects the acceptance of the pressure regulation information display operation. The number of operations of the motor-operated valve and / or the pressure reduction detector is displayed on the display unit.

(Number of compressor operations)
The secondary pressure adjusting unit is a compressor that supplies pressurized air to the secondary side pipe by opening control,
When the controller detects the pressure reduction by the pressure adjustment detector, the controller controls the start of the compressor to restore the pressure of the secondary side pipe to the specified pressure, and determines the recovery of the pressure reduction detection by the pressure reduction detector. Control the compressor in case stop,
The pressure adjustment monitoring unit counts the number of operations of the compressor and / or the pressure reducing detector for pressure adjustment from the detection of acceptance of the reset operation that sets the count of the number of operations of the secondary pressure adjustment unit to zero, and displays pressure adjustment information When the acceptance of the operation is detected, the number of operations of the compressor and / or the pressure reducing detector for pressure adjustment is displayed on the display unit.

(Graph display of operation count)
The pressure adjustment monitoring unit creates a graph in which the number of operations of the secondary pressure adjusting unit is displayed on the display unit and the vertical axis represents the number of operations or the cumulative number of operations, and the horizontal axis represents time.

(Individual counting of multiple counting sources or summary counting)
The pressure adjustment monitoring unit counts and displays the number of operations for each counting source when there are a plurality of types of operating counts with different counting sources, or counts and displays the total number of operations for all the counting sources. .

(alarm)
The pressure adjustment monitoring unit outputs an alarm when the cumulative number of operations of the secondary pressure adjustment unit exceeds a predetermined threshold.

(Prediction and warning)
The pressure adjustment monitoring unit predicts the cumulative number of operations after a predetermined period from the cumulative number of operations of the secondary pressure adjustment unit, and outputs a forecast warning (pre-alarm) when the predicted cumulative number of operations exceeds a predetermined threshold To do.

(Alarm by cumulative addition of decompression amount)
In addition, the fire extinguishing equipment is further provided with a pressure detector that detects the pressure of the secondary side pipe, and the pressure adjustment monitoring unit subtracts the pressure detected by the pressure detector from the specified pressure of the secondary side pipe to accumulate the amount of pressure reduction. An alarm is output when the cumulative addition value of the decompression amount is equal to or greater than a predetermined threshold.

(Basic effect)
According to the fire-extinguishing equipment of the present invention, the secondary-side piping of the pre-acting valve device connected to the sprinkler head in a steady monitoring state is filled with pressurized fire-extinguishing water at a specified pressure or filled with pressurized air to a specified pressure. The secondary pressure adjusting unit is provided with a pressure regulation monitoring unit that counts the number of operations of the secondary pressure adjusting unit to be maintained and displays the number of operations on the display unit when the acceptance of the pressure regulation information display operation is detected. It is possible to check when and under what circumstances, if necessary, for example, in a protected area with a large number of operations, monitor the trend carefully, and if the number of operations tends to increase further, In some cases, the degree of sealing of the secondary side piping has decreased, so check the secondary side piping for that section, and if a leak is found, take appropriate repair measures. It enables maintenance and management of equipment.

  In addition, by looking at the number of operations of the secondary pressure adjustment unit divided into monthly units, it becomes possible to determine how much the adjustment function operates depending on the season, for example, and the fire extinguishing equipment actually operated By knowing the operation status of the secondary pressure adjustment unit provided in the fire extinguishing system, it is possible to provide valuable materials for designing and improving the secondary pressure adjustment unit provided in the fire extinguishing equipment.

(Effect of counting the number of operations of the pressure regulating motor valve)
Further, the secondary pressure adjusting unit is a pressure regulating electric valve that supplies the pressurized fire extinguishing water on the primary side of the pre-actuated valve device to the secondary side piping by opening control, and the control unit is based on a pressure reducing detector for regulating pressure. When pressure reduction detection is determined, the pressure adjustment motor valve is controlled to open and the pressure in the secondary pipe is restored to the specified pressure. When the closing control is performed, and the pressure adjustment monitoring unit counts the number of times of operation of the pressure adjusting electric valve and / or the pressure reducing detector for detecting the reset operation, and detects the reception of the pressure adjustment information display operation. In addition, since the number of operations of the pressure regulating electric valve and / or pressure reducing pressure detector is displayed on the display unit, the number of times of operation of the pressure regulating motor valve and / or pressure reducing detector is individually determined. Enables countermeasures such as inspection and repair when there are many

(Effects of counting the number of air compressor operations)
The secondary pressure adjusting unit is an air compressor that supplies pressurized air to the secondary side pipe of the pre-actuating valve device by opening control, and the control unit determines the pressure reduction detection by the pressure reducing detector When the air compressor is started and controlled, the pressure of the pressurized air in the secondary pipe is restored to the specified pressure, and when it is determined that decompression detection has been restored by the decompression detector for regulating pressure, the air compressor is stopped and regulated. The monitoring unit counts the number of operations of the air compressor and / or pressure adjustment decompression detector from the detection of acceptance of the reset operation, and when it detects acceptance of the pressure regulation information display operation, the air compressor and / or pressure regulation decompression is detected. Since the number of operations of the detector is displayed on the display section, the number of operations of the air compressor and / or the pressure reducing detector for pressure adjustment is individually grasped, for example, when the number of operations is large. To allow the deal, such as inspection and repair. As for the air compressor, by grasping the number of operations, it is possible to appropriately determine the replacement time of parts that require replacement of the filter and the like.

(Effects of displaying the number of operations in a graph)
In addition, the pressure adjustment monitoring unit creates a graph in which the number of operations of the secondary pressure adjusting unit is displayed on the display unit and the vertical axis is the number of operations and the horizontal axis is time, and is displayed on the display unit. By displaying the number of operations and the cumulative number of operations in a graph, the status of the number of operations of the secondary pressure adjusting unit can be grasped at a glance.

(Effects of individual counting or summary counting of multiple counting sources)
In addition, if there are multiple types of operation counts with different counting sources, the pressure adjustment monitoring unit counts and displays the number of operations for each counting source, or counts and displays the total number of operations for all counting sources. Therefore, for example, the individual operation status can be found from the number of operations divided into the pressure regulating electric valve, the air compressor, and the pressure reducing pressure detector, and the pressure adjusting valve and the pressure reducing detector or the air compressor are adjusted. It is possible to grasp the situation based on the number of operations emphasized in the protection compartment unit from the total number of operations of the pressure reduction detector.

(Effect by alarm)
In addition, since the pressure adjustment monitoring unit outputs an alarm when the cumulative number of operations of the secondary pressure adjustment unit reaches a predetermined threshold value, the number of operations can be reduced even if the person in charge does not perform a pressure adjustment information display operation. When the number is abnormally high, a warning is output, and the operation status is confirmed by listening to the warning, thereby enabling more reliable maintenance management.

(Effects of prediction and warning)
In addition, the pressure adjustment monitoring unit predicts the number of operations after a predetermined period from the cumulative number of operations of the secondary pressure adjustment unit, and outputs a forecast warning (pre-alarm) when the predicted number of operations reaches a predetermined threshold. Therefore, before reaching the predetermined threshold value, the arrival of the threshold value is predicted and a forecast warning (pre-alarm) is made, so that an abnormal operation tendency can be known and dealt with at an early stage.

(Effect of warning by accumulating the amount of decompression)
In addition, the fire extinguishing equipment is further provided with a pressure detector that detects the pressure of the secondary side pipe, and the pressure control monitoring unit subtracts the pressure reduction amount obtained by subtracting from the detected pressure of the pressure detector and the specified pressure of the secondary side pipe. Is added, and an alarm is output when the cumulative addition value exceeds the predetermined threshold.For example, the amount of leakage is small, and the total number of operations of the pressure reduction detector has reached the predetermined threshold. Even in situations where it takes time to warn, it is possible to find out the abnormality at an early stage by obtaining the cumulative amount of decompression, check the secondary piping, and repair if a leak is found. By taking measures, it is possible to maintain and manage appropriate facilities.

Explanatory drawing which showed the outline of the pre-operation type fire extinguishing equipment which filled the secondary side piping with pressurized fire extinguishing water The block diagram which showed embodiment of the function structure in the sprinkler control panel of FIG. Explanatory drawing which showed the pressure regulation information display screen which displays the operation frequency of the electric valve for pressure regulation and the pressure reduction detector for pressure regulation Explanatory drawing which showed the pressure regulation information display screen which displays the operation frequency of the electric valve for pressure regulation and the pressure reduction detector for pressure regulation Explanatory drawing which showed the pressure regulation information display screen which displays the total operation frequency of the electric valve for pressure regulation and the pressure reduction detector for pressure regulation Explanatory drawing which showed the pressure regulation information display screen which carries out warning display of the operation frequency of the electric valve for pressure regulation Explanatory drawing which showed the pressure regulation information display screen which predicts the frequency | count of operation of the electric valve for pressure regulation, and displays an alarm Explanatory drawing which showed the outline of the pre-operation type fire extinguishing equipment which filled the secondary side piping with pressurized air The block diagram which showed embodiment of the function structure in the sprinkler control panel of FIG. Explanatory drawing showing the pressure adjustment information display screen that displays the number of operations of the air compressor Explanatory drawing showing the pressure regulation information display screen that displays the number of operations of the air compressor and the pressure reduction detector for pressure regulation Time chart showing pressure detection of secondary side piping by pressure sensor and addition accumulation of pressure reduction amount

[Overview of wet pre-acting sprinkler fire extinguishing equipment]
FIG. 1 is an explanatory diagram showing an outline of a wet pre-acting sprinkler fire extinguishing facility in which a secondary side pipe of a pre-acting valve device is filled with pressurized fire extinguishing water as an example of the fire extinguishing facility 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.

  For the fire pump 10, a pressure tank 18 used for starting is 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 secondary side pipe to which the sprinkler head 26 of the pre-actuating valve device 24 is connected is filled with pressurized fire extinguishing water having a specified pressure.

  The pre-actuating valve device 24 includes a pre-acting valve 40, an operating electric valve 42, a pressure adjusting electric valve 44, an operating pressure reducing detector 46, a flowing water detector 48, and a pressure adjusting pressure reducing detector 50. As the operation pressure reduction detector 46 and the flowing water detector 48, pressure switches that are turned on by pressure reduction detection are used. Further, when the pressure detected by the pressure reducing detector 50 is P1, the pressure detected by the operating pressure detector 46 is set to a lower pressure P2. For this reason, the pressure-reducing detector 50 for pressure adjustment detects the pressure reduction before the pressure-reducing detector 46 for operation detects the pressure-reduction of the secondary side piping.

  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 actuating electric valve 42 is opened by the opening control signal based on the fire detection and pressure reduction detection from the pre-actuating valve control panel 34, the pre-actuating valve 40 is opened and the pressure-extinguishing water is switched from the primary side to the secondary side. The water is discharged from the sprinkler head 26 that has been operated. 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 the operation pressure reduction detector 46. Further, the water flow to the secondary side due to the opening of the pre-actuating valve 40 is detected by the water flow detector 48.

  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 regulating electric valve 44 is opened in response to an opening control signal from the pre-actuated valve control panel 34 that has detected the pressure reduction detected by the pressure reducing pressure detector 50, and supplies primary side pressurized fire extinguishing water to the secondary side piping. To restore the specified pressure. When the pressure in the secondary side pipe is restored to the specified pressure, the pressure reducing detector 50 is restored, and the pressure adjusting electric valve 44 is closed by a closing control signal from the pre-actuated valve control panel 34 to perform a single pressure adjusting operation. Exit.

[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 52, an operation unit 54, a display unit 56, and an alarm unit 58, and each of the pre-actuated valves shown in FIG. The device 24 is connected.

  The pre-actuating valve device 24 is shown by taking out the fire detector 36, the actuating electric valve 42, the actuating decompression detector 46, the pressure regulating electric valve 44 and the pressure regulating decompression detector 50 shown in FIG. The fire detector 36 is installed in the protective section of the pre-actuating valve device 24, but is shown in the pre-acting valve device 24 for convenience of explanation.

Here, the electric pressure adjusting valve 44 functions as a secondary pressure adjusting unit, operates under the control of the pre-actuating valve control panel 34 based on the pressure reduction detection of the pressure adjusting pressure reduction detector 50, and controls the sprinkler head 26 in a steady monitoring state. The secondary side piping of the connected pre-actuating valve device 24 is filled with pressurized fire-extinguishing water at a specified pressure to maintain the specified pressure.

  The control unit 52 is a function realized by executing a program, for example, and uses, as hardware, a computer circuit provided with a CPU, a memory, various input / output ports, and the like.

  A fire detector 36 provided on the pre-acting valve device 24 side for each protection section is connected to the control unit 52 by a sensor line, and the operation motor valve 42, the pressure adjustment motor valve 44, and the operation pressure reduction detector. 46 and the pressure reducing detector 50 for pressure regulation are connected by a signal line.

  Moreover, the control part 52 is provided with the pressure regulation monitoring part 60 as a function implement | achieved by execution of a program. The operation unit 54 is provided with various operation switches necessary for the control operation of the pre-actuating valve control panel 34. The display unit 56 is provided with various indicators necessary for the control operation of the pre-actuated valve control panel 34. The alarm unit 58 is provided with a speaker for acoustically outputting a fire alarm and a failure alarm.

  Here, a screen display panel with a touch panel having both functions is provided as the operation unit 54 and the display unit 56, and necessary information including pressure regulation information of the secondary side pipe is displayed on the screen display panel. An operation button for instructing an operation corresponding to the information display is provided.

(Configuration of control unit)
The control unit 52 of the pre-actuating valve control panel 34 performs pre-operation when double fire control is performed, when both fire detection by the fire detector 36 and decompression detection by the operation decompression detector 46 are determined for each protection section. A control for outputting the opening control signal to the actuating motor operated valve 42 provided in the valve device 24 and remotely controlling the opening, and opening the pre-actuating valve 40 to sprinkle pressurized fire-extinguishing water from the sprinkler head 26. I do.

  Further, as another pattern, the control unit 52 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.

  In addition, the control unit 52 detects the pressure reduction detection signal from the pressure reduction pressure detector 50 when the pressure of the pressure-extinguishing water charged to the secondary side of the pre-actuating valve device 24 decreases during operation of the fire extinguishing equipment. In this case, an opening control signal is output to the pressure regulating electric valve 44 to perform opening control, and thereby, the primary pressure pressurized water for extinguishing water is supplied to the opened pressure regulating electric valve 44 to perform pressure recovery control.

  Further, the control unit 52 outputs a closing control signal to the pressure adjusting electric valve 44 when the pressure adjusting pressure reduction detector 50 is restored and detects the stop of the pressure reduction detection signal after the pressure adjusting electric valve 44 is controlled to be opened. Control to keep the recovered secondary pipe pressure at the specified pressure.

(Configuration of pressure adjustment monitoring unit)
The pressure adjustment monitoring unit 60 provided in the control unit 52 adjusts the secondary pressure to recover the pressure reduction of the pressure-extinguishing water filled in the secondary side piping of the pre-actuating valve device 24 connected to the sprinkler head 26 in the steady monitoring state. When the acceptance of pressure regulation information display operation by the person in charge is detected, control is performed to display the counted number of operations on the screen display panel.

  Counting the number of operations of the secondary pressure adjustment by the pressure adjustment monitoring unit 60 includes counting the number of times of operation of the pressure regulating motor operated valve 44 and counting the number of times of operation of the pressure reducing pressure detector 50. Control is performed to count the number of operations and / or the total number of operations.

  The number of operations of the pressure regulating electric valve 44 is counted as one operation of the opening control and the closing control. Further, the pressure reduction detection and restoration of the pressure adjustment pressure reduction detector 50 are counted as one operation.

  In addition, the number of operations for adjusting the secondary pressure by the pressure adjustment monitoring unit 60 is cleared to zero when the reception of the reset operation by the person in charge is detected, and the operation from this time until the reception of the next reset operation is detected. Control to count the number of times.

  Further, when displaying the number of secondary pressure adjustment operations on the screen display panel, the pressure adjustment monitoring unit 60 performs control to create and display a graph with the number of operations on the vertical axis and the time on the horizontal axis. The graph display by the pressure regulation monitoring unit 60 displays, for example, the number of operations per day and the cumulative number thereof.

(Screen display of pressure regulation information)
FIG. 3 is an explanatory view showing a pressure regulation information display screen for displaying the number of operations of the pressure regulating motor operated valve. FIG. 3 (A) shows a basic screen, and FIG. 3 (B) shows a graph screen.

  As shown in FIG. 3A, the pressure adjustment information display screen 64 displays, for example, the number of operations of the pressure regulating motor operated valve 44 counted by the pressure regulation monitoring unit 60 of FIG. "July 14th of the year" is displayed, and the number of operations indicates the number of operations from the reset date to the present. The reset button 68 is operated to reset the number of operations.

  Such a pressure regulation information display screen 64 can arbitrarily select and display the pre-actuated valve device 24 provided in the protection section, and when batch selection is performed, it can be sequentially displayed in a predetermined order. Is possible.

  Further, a graph button 66 is provided on the pressure adjustment information display screen 64, and when this button is operated, a transition is made to the pressure adjustment information display screen 70 of FIG. On the pressure regulation information display screen 70, as shown in a graph 72, the number of operations is displayed as a bar graph, for example, with the vertical axis representing the number of operations and the horizontal axis representing, for example, a day unit. Further, as shown in a graph 74, the cumulative number of times of the number of daily operations is displayed, for example, as a line graph.

  The person in charge displays such pressure regulation information display screens 64 and 70 by performing a pressure regulation information display operation, and from the screen information at that time, it is necessary to know when the secondary pressure adjustment was operated. For example, in a protection zone with a large number of operations, the trend is carefully monitored, and if there is a tendency for the number of operations to increase further, the secondary side pipe is sealed. Since the degree is low, the secondary piping is inspected for that section, and if a leak is found, repair measures are taken to enable appropriate equipment maintenance.

  In addition, by looking at the number of times of secondary pressure adjustment operation divided into monthly units, it becomes possible to understand how much the operation status of the adjustment function varies depending on the season, for example. Knowing the operational status of the secondary pressure adjustment makes it possible to provide valuable data for the design and improvement of the secondary pressure adjustment section provided in the fire extinguishing equipment.

(Pressure adjustment information screen display when there are multiple counting sources)
FIG. 4 is an explanatory diagram showing a pressure adjustment information display screen when there are a plurality of operation count sources. In the pre-actuating valve device 24 of FIG. 1, there are two regulators for counting the number of operations of the secondary pressure adjustment, that is, the pressure regulating electric valve 44 and the pressure regulating pressure reduction detector 50, and the pressure regulation monitoring unit 60 of FIG. 2. Since the number of times of each operation is counted, as shown in the pressure regulation information display screen 76 of FIG. 4, the number of times of operation of the pressure regulating electric valve 44 and the number of times of operation of the pressure reducing pressure detector 50 are individually set. indicate.

  Also in this case, if the reset button 68 is operated, the number of operations is reset to zero and the reset date is updated. Further, when the graph button 66 is operated, as shown in FIG. 3 (B), the daily operation count and cumulative operation count graph display screens of the pressure regulating electric valve 44 and the pressure reducing pressure detector 50 are displayed. Transition.

  Here, when the secondary pressure adjustment is performed, the number of operations of the pressure regulating motor operated valve 44 and the pressure regulating pressure reduction detector 50 is basically the same, but if the number of operations of both is greatly different. May cause a failure in the position detecting function of the pressure regulating electric valve 44 or the pressure detecting function of the pressure reducing pressure detector 50, and can be inspected.

  FIG. 5 is an explanatory view showing a pressure regulation information display screen when there are a plurality of operation frequency counting sources. As shown in the pressure regulation information display screen 78, the number of operations of the pressure regulating motor operated valve 44 and the pressure reduction for pressure regulation are shown. The total number of operations of the detector 50 is displayed. Here, since the number of operations of the pressure regulating electric valve 44 and the pressure reducing pressure detector 50 is the same, the total number of operations is twice the actual number of operations, and the number of operations can be highlighted and displayed. To do.

(Abnormal alarm for the number of operations)
FIG. 6 is an explanatory view showing a pressure adjustment information display screen for displaying the number of operations of the pressure adjusting motor operated valve as an alarm. FIG. 6 (A) shows a basic screen, and FIG. 6 (B) shows a graph screen.

  The pressure adjustment monitoring unit 60 shown in FIG. 2 performs control to output an alarm by an alarm display and / or an alarm sound, for example, when the cumulative number of operations of the pressure adjusting motorized valve 44 reaches a predetermined alarm value (alarm threshold). When the acceptance of the pressure regulation information display operation by the person in charge is detected, the pressure regulation information display screen 80 performing the alarm shown in FIG. 6A is displayed. This pressure regulation information display screen 80 displays an alarm value in addition to the current number of operations, and displays that the alarm value has been exceeded.

  Further, when the graph button 66 on the pressure regulation information display screen 80 is operated, a transition is made to the pressure regulation information display screen 82 in FIG. 6B, and a graph 86 indicating the cumulative number of daily operations is an alarm indicated by a one-dot chain line. Indicates that the value has been reached.

  In this way, even if the person in charge does not perform the pressure adjustment information display operation, if the number of operations is abnormally high, an alarm is output, and the person in charge who heard the alarm opens the pressure adjustment information display screen and confirms the operation status Therefore, it is possible to take measures by inspecting the secondary side piping.

(Predictive alarm for the number of operations)
FIG. 7 is an explanatory diagram showing a pressure regulation information display screen for predicting the number of operations of the pressure regulating motor operated valve and displaying an alarm. FIG. 7A shows a basic screen, and FIG. 7B shows a graph screen. Show.

  The pressure adjustment monitoring unit 60 shown in FIG. 2 predicts the operation number Nx after a predetermined period T has elapsed, for example, from the rate of change of the cumulative operation number of the operation times of the pressure regulating motor operated valve 44, and the predicted operation number Nx is Control is performed to output a forecast alarm (pre-alarm) when a predetermined alarm value is exceeded.

  In addition, when the pressure adjustment monitoring unit 60 detects acceptance of the pressure adjustment information display operation by the person in charge after outputting the prediction alarm, the pressure adjustment information display screen 88 that performs the prediction alarm shown in FIG. indicate. In addition to the current number of operations, the pressure regulation information display screen 88 displays that the number of operations is predicted to exceed the alarm value.

  Further, when the graph button 66 on the pressure regulation information display screen 88 is operated, a transition is made to the pressure regulation information display screen 90 in FIG. 7B, and the graph 94 showing the cumulative number of operations per day is the position of the current solid line. However, the dotted line shows the number of operations Nx when the predetermined period T predicted from the change rate of the number of operations up to the present has elapsed, and predicts that the predicted number of operations Nx exceeds the alarm value indicated by the alternate long and short dash line it's shown.

  In this way, the pressure adjustment monitoring unit 60 predicts the future cumulative number of operations from the cumulative number of operations of the secondary pressure adjustment, and when the predicted number of operations exceeds a predetermined alarm value, a forecast warning (pre-alarm) Is output so that the abnormal operation tendency can be known and dealt with at an early stage before the cumulative number of operations reaches a predetermined alarm value.

[Secondary pressure adjustment and monitoring of dry type pre-actuated sprinkler fire extinguishing equipment]
FIG. 8 is an explanatory view showing an outline of a dry pre-actuated sprinkler fire extinguishing facility that fills the secondary pipe of the pre-acting valve device with pressurized air as an example of the fire extinguishing facility of the present invention. As shown in FIG. 8, the pre-actuating valve device 24 provided in the branch pipe 22 drawn out from the water supply main pipe 16 includes a pre-acting valve 40, an actuating electric valve 42, an actuating decompression detector 46, a flowing water detector 48, and A pressure reducing detector 50 is provided, and an air pipe from the air compressor 96 is connected to the secondary side of the pre-actuating valve 40, and the secondary side pipe is filled with pressurized air serving as a specified pressure.

The pump control panel 14 has a function as a compressor control panel, and the pump control panel 14 starts and stops the air compressor 96 by a control signal from the pre-actuated valve control panel 34.

Here, the air compressor 96 functions as a secondary pressure adjusting unit, operates under the control of the pre-actuated valve control panel 34 based on the pressure reduction detection of the pressure reduction detector 50, and connects the sprinkler head 26 in a steady monitoring state. The secondary side piping of the pre-actuating valve device 24 is filled with pressurized air at a specified pressure to maintain the specified pressure.

The air piping from the air compressor 96 supplies pressurized air to the secondary piping of the plurality of pre-actuating valve devices 24 provided in the fire extinguishing equipment. For this reason, the secondary pressure adjustment by the air compressor 96 is performed. The number of operations is the total number of operations based on the pressure reduction detection of the plurality of pressure reducing detectors 50 for pressure regulation provided on the secondary side of all the pre-actuating valve devices 24 connected to the same air pipe.

  Since the other configuration is the same as that of the wet type in FIG. 1, the same reference numerals are given and the description thereof is omitted.

[Configuration of pre-actuated valve control panel]
FIG. 9 is a block diagram showing an embodiment of the functional configuration of the pre-acting valve control panel of FIG. As shown in FIG. 9, the pre-actuated valve control panel 34 includes a control unit 52, an operation unit 54, a display unit 56, and an alarm unit 58. For example, the pre-actuated valve is provided for each protection section shown in FIG. 8. The device 24 is connected.

  The pre-actuating valve device 24 is shown by taking out the fire detector 36, the actuating electric valve 42, the actuating decompression detector 46, and the pressure regulating decompression detector 50 shown in FIG.

  The control unit 52 is a function realized by executing a program, for example, and uses, as hardware, a computer circuit provided with a CPU, a memory, various input / output ports, and the like.

(Configuration of secondary pressure adjustment unit)
The pressure regulation monitoring unit 60 provided in the control unit 52 reduces the pressure from the pressure regulation decompression detector 50 when the pressure of the pressurized air charged in the secondary side of the pre-actuating valve device 24 decreases during operation of the fire extinguishing equipment. When a detection signal is detected, a start control signal is output to the pump control panel 14 to start the air compressor 96, and control is performed to restore the specified pressure by supplying pressurized air from the operation of the air compressor 96 to the secondary side pipe. I do.

  In addition, the pressure adjustment monitoring unit 60 outputs a stop control signal to the pump control panel 14 when the pressure reduction detector 50 recovers and detects the stop of the pressure reduction detection signal after the air compressor 96 is started and controlled. Control to stop the air compressor 96 is performed, and the recovered pressure of the secondary side pipe is maintained at a specified pressure.

(Configuration of pressure adjustment monitoring unit)
The pressure adjustment monitoring unit 60 provided in the control unit 52 recovers the secondary pressure to the specified pressure with respect to the pressure reduction of the pressurized air filled in the secondary side piping of the pre-actuating valve device 24 connected to the sprinkler head 26 in the steady monitoring state. Control is performed to count the number of operations of pressure adjustment, and to display the counted number of operations on the screen display panel when the acceptance of the pressure regulation information display operation by the person in charge is detected.

Counting the number of operations of pressure regulation control by the pressure regulation monitoring unit 60 includes counting the number of times of operation of the air compressor 96 and counting the number of times of operation of the pressure reduction detector 50. The pressure regulation monitoring unit 60 operates each time. The control which counts the frequency | count of operation | movement which combined frequency | count and / or both is performed.

The number of operations of the air compressor 96 is counted as one operation of the opening control and the closing control. Further, the pressure reduction detection and restoration of the pressure adjustment pressure reduction detector 50 are counted as one operation.

  In addition, the number of operations of pressure regulation control by the pressure regulation monitoring unit 60 is cleared to zero when the acceptance of the reset operation by the person in charge is detected, and the number of operations until the next acceptance of the reset operation is detected from this time. The control which counts is performed.

  Further, when displaying the number of secondary pressure adjustment operations on the screen display panel, the pressure adjustment monitoring unit 60 performs control to create and display a graph with the number of operations on the vertical axis and the time on the horizontal axis. The graph display by the pressure regulation monitoring unit 60 displays, for example, the number of operations per day and the cumulative number thereof.

(Screen display of pressure regulation information)
FIG. 10 is an explanatory view showing a pressure adjustment information display screen for displaying the number of operations of the air compressor. FIG. 10 (A) shows a basic screen, and FIG. 10 (B) shows a graph screen.

  As shown in FIG. 10A, the pressure regulation information display screen 100 displays, for example, the number of operations of the air compressor 96 counted by the pressure regulation monitoring unit 60 in FIG. The number of operations of the air compressor 96 indicates the total number of operations for adjusting the secondary pressure of the plurality of pre-actuating valve devices 24 connected to the same air pipe.

  Also, “July 14, 2013” is displayed as the reset date, and the number of operations indicates the number of operations from the reset date to the present. The reset button 68 is operated to reset the number of operations.

Further, a graph button 66 is provided on the pressure adjustment information display screen 100, and when this button is operated, a transition is made to the pressure adjustment information display screen 102 of FIG. On the pressure regulation information display screen 102, as shown in a graph 104, the number of operations of the air compressor 96 is displayed as a bar graph with the vertical axis representing the number of operations and the horizontal axis representing, for example, a day unit. Further, as shown in the graph 106, the cumulative number of operations obtained by accumulating the number of operations per day is displayed in a line graph.

FIG. 11 is an explanatory diagram showing a pressure adjustment information display screen when there are a plurality of operation count sources. In the pre-actuating valve device 24 of FIG. 8, the air compressor 96 provided in common to the plurality of pre-acting valve devices 24 and the pre-acting valve device 24 are individually used as a counting source of the number of operations for adjusting the secondary pressure. There are two pressure reduction detectors 50 for pressure regulation, and the pressure regulation monitoring unit 60 in FIG. 8 counts the number of times of each operation. Therefore, as shown in the pressure regulation information display screen 108 in FIG. The number of operations of the compressor 96 and the number of operations of the pressure adjusting decompression detector 50 are individually displayed.

  Such a pressure regulation information display screen 108 arbitrarily selects and displays the pre-actuated valve device 24 provided in the protection section, and thereby indicates the number of operations of the pressure-reducing pressure-reducing detector 50 for each pre-actuated valve device 24. In addition, the number of operations for adjusting the secondary pressure of the entire equipment can be determined from the number of operations of the air compressor 96. In addition, the pressure adjustment information display screen 108 displays a list of the number of operations of the pressure reducing detector 50 provided for the plurality of pre-actuating valve devices 24 connected to the same air pipe, together with the number of operations of the air compressor 96. Also good.

The person in charge displays such a pressure regulation information display screen 100, 102 or 108 by performing a pressure regulation information display operation, and when the air compressor 96 for secondary pressure adjustment is determined from the screen information at that time. For example, when the number of operations is large, by selecting the protection section and examining the number of operations of the pressure-reducing pressure detector 50, the protection with a large number of operations is performed. Identify the compartment and carefully monitor its trend. If there is a tendency to increase the number of operations, the degree of sealing of the secondary piping has decreased. Inspection of the side pipes, and if a leak is found, take corrective measures to enable appropriate equipment maintenance.

  Also, in the case of the air compressor 96, when a predetermined alarm value is exceeded, an alarm is output, or when the number of operations after a predetermined period is predicted from the rate of change in the number of operations up to the present, the alarm threshold is exceeded. A forecast warning (pre-alarm) may be output.

  In addition, by observing the number of operations of the air compressor 96, for example, by month, it is possible to determine how much the operation status of the adjustment function varies depending on the season, for example. In addition, knowing the operational status of the secondary pressure adjustment makes it possible to provide valuable data for the design and improvement of the secondary pressure adjustment section provided in the fire extinguishing equipment.

  Further, the pressure adjustment monitoring unit 60 outputs an alarm when the number of operations of the air compressor 96 exceeds a predetermined alarm value, or predicts the number of operations after a predetermined period from the rate of change in the number of operations until now. Control that outputs a forecast warning (pre-alarm) when the warning threshold is exceeded may be performed.

  The other configurations and functions of the fire extinguishing equipment and the pre-actuated valve control panel are the same as those in the wet type shown in FIGS.

[Monitoring by cumulative addition of decompression amount]
As another embodiment of the fire extinguishing equipment according to the present invention, for example, in the wet pre-acting sprinkler fire extinguishing equipment shown in FIGS. 1 and 2, the pre-acting valve device 24 further detects the pressure of the secondary side pipe. The pressure adjustment monitoring unit 60 provided in the control unit 52 of the pre-actuated valve control panel 34 reads the detected pressure P of the secondary side pipe by the pressure sensor every predetermined period T, and sets it in advance. The depressurization amount ΔP is subtracted from the specified pressure Ps of the secondary side pipe, which is ΔP = Ps−P
Further, the obtained decompression amount ΔP is cumulatively added to obtain a cumulative added value ΣP, and when the cumulative added value ΣP becomes equal to or greater than a predetermined threshold value TH, control is performed so as to output an alarm.

  FIG. 12 is a time chart showing an example of pressure detection of the secondary side pipe by the pressure sensor and addition accumulation of the pressure reduction amount. FIG. 12A shows the detected pressure of the secondary side pipe, and FIG. Indicates a cumulative addition value.

  As shown in FIG. 12, when there is water leakage in the secondary side pipe of the pre-actuating valve device 24, the detected pressure P in the secondary side pipe detected by the pressure sensor with respect to the specified pressure Ps of the secondary side pipe is When the pressure is reduced with the passage of time and reduced to the set pressure Pth of the pressure adjustment detector 50, the pressure reduction detector 50 outputs a pressure reduction detection signal, and the control unit 52 controls the opening of the pressure adjustment electric valve 44 to reduce the pressure. The pressure regulation control for recovering the detected pressure P in the secondary side pipe to the specified pressure Ps is repeated.

  The detected pressure P in the secondary side pipe detected by the pressure sensor shown in FIG. 12A, which repeats the pressure reduction due to such leakage and the pressure recovery by the pressure regulation control, is detected at the pressure regulation monitoring unit 60 every predetermined period T. The pressure reduction amount ΔP (= Ps−P) is obtained by subtracting from the specified pressure Ps of the secondary side pipe, and then the cumulative addition value ΣΔP shown in FIG. 12B is obtained. At time tn, the predetermined threshold value TH is obtained. If it becomes above, it will perform control which instruct | indicates to the alarm part 58 and outputs an alarm.

  In this case, the number of pressure regulation operations based on the pressure reduction detection of the pressure regulation decompression detector 50 is two times less than the threshold number of times for outputting an alarm, and it takes time until the total number of operations reaches a predetermined threshold value and an alarm is issued. Even if there is a situation, by finding the cumulative integrated value ΣΔP of the pressure reduction amount ΔP, if there is an abnormality due to leakage of the secondary side pipe at an early stage, check the secondary side pipe, By taking repair measures, it is possible to maintain and manage appropriate facilities.

  The monitoring performed by accumulatively adding the pressure reduction amount of the secondary side pipe is the same for the dry type pre-actuated sprinkler equipment shown in FIG.

[Modification of the present invention]
(Display of secondary pressure adjustment information)
In the above embodiment, the number of operations for adjusting the secondary pressure is displayed using the screen display panel. However, other appropriate display devices may be used, and display using the screen display panel is also necessary. Thus, an appropriate display form can be taken.

(Recording of secondary pressure adjustment information)
In the above embodiment, the number of operations of the secondary pressure adjustment is reset to zero by the reset operation, but the number of operations of the secondary pressure adjustment up to that time, for example, the number of operations per day, It is possible to use it by storing it in a memory or the like, saving it, and reading it out as necessary.

(Single interlock)
In the above embodiment, the double interlock control in which the pre-actuating valve device is controlled to open and the water for pressurized fire extinguishing is sprinkled from the sprinkler head when both the fire detection by the fire detector and the decompression detection by the decompression detector are determined. The pre-actuated sprinkler fire extinguishing system is taken as an example, but when the fire detection by the fire detector is detected, the pre-actuating valve device is opened and the pre-actuated system with single interlock control that sprays pressurized fire water from the sprinkler head The same applies to sprinkler fire extinguishing equipment.

  This single interlock control is also used to detect failures that cannot be detected by a fire detector, such as transmission failure, disconnection, short circuit, interlock stop, commercial power supply, in addition to the pattern in which the pre-actuating valve device is controlled to open when a fire detector detects a fire. When it is determined that a failure has been detected, such as a disconnection, the pre-actuating valve device is controlled to open, and the water for pressurized fire extinguishing is discharged from the sprinkler 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.

10: Fire-extinguishing pump 14: Pump control panel 24: Pre-acting valve device 34: Pre-acting valve control panel 36: Fire detector 40: Pre-acting valve 42: Electric valve for operation 44: Electric valve for pressure adjustment 46: Detection of pressure reduction for operation Device 48: Flowing water detector 50: Pressure reducing detector 52: Control unit 54: Operation unit 60: Pressure adjusting monitoring unit 96: Air compressor

Claims (8)

For each of several protective compartments ,
A closed sprinkler head;
A fire detector for detecting a fire in the protective compartment;
The primary side is connected to the water supply pipe and the secondary side is connected to the sprinkler head via the secondary side pipe, and is remotely controlled to open and supply pressurized fire-extinguishing water from the water supply pipe to the secondary side pipe A pre-actuating valve to
Operates under remote control, and fills the secondary side pipe with pressurized fire extinguishing water for the water supply pipe or fills with pressurized air to maintain the pressure of the secondary side pipe at a specified pressure. And
A depressurization detector that detects depressurization of the secondary side pipe due to the opening operation of the sprinkler head;
A pressure reducing detector for pressure adjustment for detecting a pressure reduction of the secondary pipe before the pressure reduction detection by the pressure reduction detector;
When it is determined that the pressure reduction is detected by the pressure-reducing pressure detector in a steady monitoring state, the secondary pressure adjusting unit is operated by remote control to restore the pressure of the secondary side pipe to the specified pressure, and When the fire detection by the fire detector provided in the protection section, or the fire detection by the fire detector and the pressure reduction detection by the pressure reduction detector is determined, the pre-actuation valve is opened by remote control and the water supply pipe is added. A controller that supplies pressure-extinguishing water to the secondary pipe and sprays the supplied pressurized fire-extinguishing water when the sprinkler head is opened; and
A pressure adjustment monitoring unit that counts the number of operations of the secondary pressure adjustment unit and displays the number of operations on the display unit when detecting acceptance of a display operation of pressure adjustment information;
Fire extinguishing equipment characterized by comprising

In the fire extinguishing equipment according to claim 1,
The secondary pressure adjustment unit is a pressure regulating electric valve provides pressurized圧消fire water of the water supply pipe to the secondary side piping by opening control,
Wherein, when determining the vacuum detection by the pressure regulating vacuum detector, said pressure regulating electric valve opening control to recover the pressure of the secondary side piping to the specified pressure, the pressure regulating vacuum detection When the restoration of decompression detection by the pressure regulator is determined, the motor for regulating pressure is closed and controlled,
The pressure adjustment monitoring unit determines the number of operations of the motor for regulating pressure and / or the pressure reducing detector for regulating pressure from the detection of acceptance of a reset operation that sets the count of the number of operations of the secondary pressure adjusting unit to zero. A fire extinguishing system that counts and displays the number of operations of the pressure regulating electric valve and / or the pressure reducing pressure detector when the acceptance of the pressure regulation information display operation is detected.
In the fire extinguishing equipment according to claim 1,
The secondary pressure adjustment unit is an air compressor supplying pressurized air to the secondary side piping by opening control,
Wherein, when determining the vacuum detection by the pressure regulating vacuum detector, the air compressor activation control to recover the pressure of the secondary side piping to the specified pressure, by the pressure regulating vacuum detector When the decompression detection recovery is determined, the compressor is stopped and controlled.
The pressure adjustment monitoring unit counts the number of operations of the air compressor and / or the pressure reducing detector for pressure adjustment after detecting the acceptance of a reset operation that sets the count of the number of operations of the secondary pressure adjusting unit to zero. A fire extinguishing system that displays the number of operations of the air compressor and / or the pressure-reducing detector for pressure regulation on a display unit when acceptance of a pressure regulation information display operation is detected.
In the fire extinguishing equipment according to any one of claims 1 to 3, the pressure adjustment monitoring unit displays the number of operations of the secondary pressure adjusting unit on the display unit on the vertical axis, the number of operations or the cumulative number of operations, and the horizontal axis on the horizontal axis. A fire extinguishing equipment, characterized in that a time graph is created and displayed on the display unit.
4. The fire extinguishing equipment according to claim 2, wherein the pressure adjustment monitoring unit counts and displays the number of operations for each counting source when there are a plurality of types of operating counts having different counting sources, or all of them are displayed. Fire extinguishing equipment that counts and displays the total number of operations of the counting source.
2. The fire extinguishing equipment according to claim 1, wherein the pressure adjustment monitoring unit outputs an alarm when the cumulative number of operations of the secondary pressure adjusting unit exceeds a predetermined threshold value. 3.
2. The fire extinguishing equipment according to claim 1, wherein the pressure adjustment monitoring unit predicts a cumulative operation number after a predetermined period from the cumulative operation number of the secondary pressure adjustment unit, and the predicted cumulative operation number is equal to or greater than a predetermined threshold value. A fire extinguishing system that outputs a forecast warning when it becomes.
In the fire extinguishing equipment according to claim 1,
Furthermore, a pressure detector for detecting the pressure of the secondary side pipe is provided,
The pressure adjustment monitoring unit cumulatively adds a depressurization amount obtained by subtracting the detected pressure of the pressure detector from a specified pressure of the secondary side pipe, and when the accumulated addition value of the depressurization amount becomes a predetermined threshold value or more. Fire extinguishing equipment characterized by outputting an alarm.

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