JPH0448470B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to fire extinguishing equipment equipped with an automatic inspection system.

[Prior Art] Conventionally, in fire extinguishing equipment equipped with an automatic inspection system, a terminal testing device for performing a comprehensive sprinkler inspection as shown in FIG. 8, for example, is provided at each pipe terminal on each floor.

In Fig. 8, reference numeral 1 denotes a terminal test device, in which an electric valve 4 for automatic inspection, a manual valve 5 for manual inspection, and an operating flow rate equivalent to one sprinkler are installed at the end of a branch pipe 3 equipped with a sprinkler head 2. An orifice 6 for flowing water and a pressure gauge 9b for measuring the pressure inside the pipe are provided.

In addition, a solenoid valve 7 and an orifice 8 are installed in parallel with the piping system for terminal testing, and a pressure sensor 9 is installed inside the housing.
A detects an abnormal increase in the pressure inside the pipe and activates the solenoid valve 7.
A pressure relief device is also provided that opens the orifice 8 and allows a flow rate lower than the operating flow rate of an alarm valve (not shown) provided at the branch portion of the branch pipe 3 to lower the pressure inside the pipe.

In the case of an automatic inspection system equipped with a terminal testing device for performing comprehensive sprinkler inspections, an inspection management panel installed at a center etc. can be connected to a relay panel equipped with a control function as an inspection panel, for example, by floor. When an automatic inspection is commanded, the electric valve 4 of the terminal testing device 1 installed at the end of the pipe on the selected floor is fully opened and the operating flow rate of one sprinkler determined by the orifice 6 is caused to flow through the branch pipe 3. A simulated fire condition is created, and the water flow flowing through the branch pipe 3 activates an alarm valve (not shown) provided at the branch part of the branch pipe 3 to output a fire detection signal, and this fire detection signal activates the fire extinguishing pump. to start. and,
The quality of the equipment is determined based on data obtained from various sensors while the pump is running.

On the other hand, in addition to the inspection operation performed based on the automatic inspection command, by manually opening the manual valve 5 provided in the terminal testing device 1, a pseudo fire condition is similarly created and the pressure is measured with the pressure gauge 9b. , manual inspection can be performed on the terminal testing device 1 side.

Furthermore, the automatic inspection system has a control function that forcibly cancels the inspection mode and restores the normal mode, which is a monitoring state, when a fire is detected even during the inspection operation when the inspection mode is set. That is,
During the inspection operation, the electric valve at the end of the pipe on the test floor and the electric valve installed in the test piping for the pump performance test are open, so the equipment cannot function normally as a fire extinguisher, and therefore the fire cannot be detected. The inspection mode is canceled and the equipment is returned to a monitoring state, allowing the fire extinguishing function to work effectively.

[Problems to be Solved by the Invention] However, in the case of such a conventional end test device, the end test device 1 as shown in FIG.
must be installed at the pipe end of each floor, which complicates the equipment configuration and increases equipment costs.

In order to solve this problem, the manual valve 5 may be abolished and an electric valve equipped with a manual lever that can manually open and close the valve may be used.

However, if a motor-operated valve that can be opened manually is installed, if an attempt is made to open the valve using a manual lever for a test operation, the same condition will be obtained as if the sprinkler head had been activated due to a fire; The inspection system determines that a fire has occurred and attempts to return all inspection equipment to a monitoring state. Therefore, even if the electric valve is manually opened, the electric valve is closed by the motor under the restoration control of the automatic inspection system. There was a problem that manual testing was not possible.

In addition, in the case of the terminal test device 1 shown in Fig. 8, even if manual inspection is performed by opening the manual valve 5 and then closing the manual valve 5, the fire pump can only be stopped at the pump control panel. However, it was necessary for another inspection staff to stop the pump by telephone or other means, making the inspection work complicated.

The present invention has been made in view of these conventional problems, and allows a comprehensive manual sprinkler inspection to be performed without any problem even if the valve for automatic inspection and the valve for manual inspection are shared, and can be done by one person. Another object of the present invention is to provide an inspection device for fire extinguishing equipment that is equipped with a terminal testing device that allows comprehensive manual sprinkler inspection.

[Means for Solving the Problems] In order to achieve this object, the present invention has a system that cancels the inspection mode and returns to the monitoring state when it is determined that there is a fire even during the inspection operation when the inspection mode is set. In fire extinguishing equipment equipped with an automatic inspection system with a restoration function, an electric valve that can be opened and closed manually and an orifice that flows through a flow rate equivalent to one sprinkler are installed in the housing at the end piping of each floor. , a terminal testing device that is provided with a switch that detects the opening and closing of the door of the housing, and further includes a control means that sends an inspection mode start signal to the inspection panel to set the inspection mode when the switch detects the opening of the door. will be established.

In addition, when the inspection panel is set to the inspection mode based on the opening of the door of the terminal test device, and the detection output from the water flow detection device stops after a predetermined period of time after completing the manual inspection by manually opening and closing the electric valve, a pump stop signal is sent. and automatically stop the pump by sending
A control means is provided for restoring to the monitoring state when an inspection mode end signal is received when the pump is stopped and the door of the terminal testing device is detected to be closed.

Further, the terminal testing device is provided with a control means for forcibly driving the electric valve to close when the door is detected to be closed after the manual inspection is completed.

[Function] In the terminal testing device of the present invention having such a configuration, when the door of the housing housing the terminal testing device is opened to perform a manual comprehensive sprinkler inspection, an inspection mode start signal is displayed on the inspection panel. Since the transmission is transmitted and the inspection mode is set, even if a pseudo fire condition is created by manually opening the electric valve, recovery control to the monitoring condition based on the fire detection output at this time is prohibited, and automatic inspection and manual inspection are prohibited. Even if it is standardized, manual inspection can be performed without any problem.

In addition, the inspection panel checks whether the water flow detection device installed in the branch pipe that was tested is restored after a predetermined period of time after the manual inspection by manually opening and closing the electric valve is completed, and if it is restored, the pump The pump can be automatically stopped by sending a stop signal to the pump control panel, and there is no need for a person to be present at the pump control panel, so even one person can perform manual inspections using terminal testing equipment.

Furthermore, the terminal testing device sends an inspection mode end signal a predetermined time after detecting the door closure due to the completion of manual inspection, and forcibly closes the electric valve during that time, so that it can be detected if the electric valve is forgotten to close. To surely prevent erroneous detection of a fire state and latching of a fire display by restoring to the initial state by transmitting an inspection mode end signal by closing the door in the state.

[Example] Fig. 1 is a block diagram showing the system configuration of an automatic inspection system for fire extinguishing equipment equipped with the terminal testing device of the present invention.

In FIG. 1, 10a to 10n are terminal testing devices installed at the pipe end of each floor for comprehensively inspecting sprinklers.
~10n are each provided with an electric valve 12 that can be opened and closed manually by operating a manual lever, a pressure sensor 14 that detects the pressure inside the pipe, and a switch 16 that detects the opening and closing of a door provided in the housing of the terminal testing device. The electric valve 12, pressure sensor 14, and switch 16 are connected to a local repeater 18.

Terminal testing equipment 10a installed at the end of each floor
The local repeater 18 provided at 10n is connected via a transmission line 88 to an automatic inspection relay panel 20 having a control function as an inspection panel.

A pump control panel 22 is connected to the automatic inspection relay board 20, and various sensors 24a to 24n such as pressure sensors and flow rate sensors provided as equipment components of the automatic inspection system are connected. Control loads 26a to 26n such as electric valves to be controlled for automatic inspection are connected.

The automatic inspection relay board 20 is connected to an automatic inspection management board 28 installed at a center or the like, and receives automatic inspection commands from the automatic inspection management board 28 and performs predetermined automatic inspection processing.

Furthermore, the fire reception output of the fire reception board 30 is given to the automatic inspection management board 28.
Automatic inspection control panel 2 receives fire detection output from 0.
8 forces the automatic inspection relay panel 20 to return to the monitoring state.

For the pump control panel 22, there is an alarm valve (automatic alarm valve) 3 installed at the branch part of the branch pipe for each floor.
A detection signal caused by the operation of 2a to 32n is given as a fire detection signal, and the pump is activated by this signal. Furthermore, this fire detection signal is sent to the fire receiving board 30.
is given to. Further, the fire reception output may be given to the automatic inspection relay panel 20 via the pump control panel 22.

FIG. 2 is an explanatory diagram showing an embodiment of fire extinguishing equipment in which the automatic inspection system shown in FIG. 1 is installed.

In FIG. 2, reference numeral 34 denotes a digestion pump, which is driven by a motor 36, and the motor 36 is started and stopped by the pump control panel 22. The suction pipe 38 of the fire pump 34 is lowered into a water tank 40, and when the pump is activated, the fire extinguishing water pumped up from the water tank 40 is pressurized and applied via a gate valve 44 to a water main 42 that stands up vertically to the building. Pressure is supplied. Further, an elevated water tank 46 is installed on the roof of the building, and a water main pipe 42 is connected to the elevated water tank 46.

The primary side of the gate valve 44 provided in the water supply main pipe 42 is branch-connected to a pressure tank 48, and the pressure of the water supply main pipe 42 is introduced into the pressure tank 48 to compress the air inside, and this compressed air is sent to the pressure sensor 50. Detected by

Further, a branch pipe 52 is branched and connected to the main water supply pipe 42 for each floor, an alarm valve 32 is installed at the branch part of the branch pipe 52, and a plurality of sprinkler heads 54 are installed on the secondary side of the alarm valve 32. It is installed. The terminal testing device 10 of the present invention is installed at the end of this branch pipe 52.

The terminal testing device 10 is provided with an electric valve 12 that can be opened and closed manually by a manual lever, following the gate valve 56, and following the electric valve 12, an orifice that regulates the flow rate flowing into the branch pipe 52 to one sprinkler head 54. 58 are provided. Further, a pressure sensor 14 and a pressure gauge 60 are connected to the primary side of the electric valve 12. Furthermore, the terminal test device 10 has a built-in local repeater 18.

On the other hand, a priming tank 62 is provided on the discharge side of the fire pump 34.
is installed, and the priming tank 62 is opened by the ball tap 64.
level is always kept at a constant level. Further, 66 is a set flow rate sensor provided to detect a rise in water temperature of the pump.

In order to automatically inspect such a fire extinguisher, a test pipe 68 for pump performance testing is branched and connected to the discharge side of the fire extinguisher pump 34.
8 is provided with an electric valve 70 and a flow meter 72. Further, an electric valve 74 is installed in the pressure tank 48 to drain the pressure tank 48 and lower the pressure by automatic inspection.

FIG. 3 shows the external appearance of the terminal testing device 10 of the present invention shown in FIGS. is provided with a pressure confirmation window 80 for viewing a pressure gauge provided inside.

FIG. 4 is an explanatory view showing the door 78 of the terminal testing device 10 shown in FIG. 56, an electric valve 12 and an orifice 58 are installed, and a pressure sensor 14 and a pressure gauge 60 are branched and connected to the primary side of the electric valve 12. The electric valve 12 can be manually opened and closed using a manual lever 82. Furthermore, a local repeater unit 18a is built into the housing 76.

FIG. 5 is a block diagram showing an embodiment of the local repeater 18 installed in the terminal testing device 10 of the present invention.

In FIG. 5, the local repeater 18 is provided with a CPU 84 as a control means, and the CPU 84 is connected to the automatic inspection repeater board 20 via an interface 86.
(see FIG. 1) via a transmission line 88.
Further, a predetermined repeater address is set in the CPU 84 by an address setting switch 90.
The output of the CPU 84 is given to an electric valve control circuit 92, and a drive signal from the electric valve control circuit 92 drives the motor M of the electric valve 12 to open and close via an interface 94. Also connected to the interface 94 is a switch 16 that detects the opening and closing of a door provided in the terminal testing device 10. Furthermore, the detection output of the pressure sensor 14 provided in the terminal testing device 10 is A/
converted into a digital signal by the D converter 96
It is taken into the CPU 84.

Here, the CPU 8 installed in the local repeater 18
In addition to the automatic inspection control function based on the control command from the automatic inspection relay panel 20, the reference numeral 4 has a manual inspection control function that is performed by manually opening the electric valve 12.

First, the automatic inspection control function by the CPU84 is
The first
When the automatic inspection relay board 20 shown in the figure receives a control command, the motor of the electric valve 12 is controlled in the opening direction via the electric valve control circuit 92 and the interface 94 to fully open the valve, while the automatic inspection ends. In response to the control command, the electric valve 12 is driven to fully close by the motor in the same manner.

On the other hand, regarding manual inspection control performed by manually opening and closing the electric valve 12, the CPU 84 has the following control functions.

When the door of the casing of the terminal testing device 10 is opened for automatic inspection and a door open detection output is obtained from the switch 16, an inspection mode start signal is sent to the automatic inspection relay board 20 to set the inspection mode.

The automatic inspection relay board 20 is set to the inspection mode based on the door opening, and after the inspection by manually opening and closing the electric valve 12 is completed, that is, when the detected pressure of the pressure sensor 14 enters the setting range of the pump stationary state. After a certain period of time has passed after confirming that
For example, when it is confirmed that the alarm valve 32 provided in the branch pipe 52 shown in FIG. 2 has been restored, that is, when the detection output from the alarm valve 32 has stopped,
A pump stop signal is sent to the pump control panel 22 to automatically stop the pump. Next, when the CPU 84 detects that the door is closed from the detection output of the switch 16, it transmits an inspection mode end signal to the automatic inspection relay board 20. The automatic inspection relay board 20 determines that the manual inspection has been completed by confirming that the pump has stopped and receiving the inspection mode end signal, cancels the inspection mode, and returns to the monitoring state.

Furthermore, as another control function at the end of the manual inspection, the CPU 84 forcibly closes the electric valve 12 when the door is detected to be closed, and sends an inspection mode end signal to the automatic inspection relay board 20 after a predetermined period of time.

The CPU installed in such a local repeater 18
The control function during manual inspection by 84 will be further clarified in the operation description below.

FIG. 6 is an operational flow diagram showing manual inspection processing by the terminal testing device 10 of the present invention shown in FIGS. 1-5.

In FIG. 6, when an inspector opens the door 78 of the housing 76 of the terminal testing device 10 for manual inspection, the switch 16 that detects door opening/closing is turned on, and whether the switch 16 is turned on is determined in step S1. Proceeding to step S2, the CPU 84 provided in the local repeater 18 transmits an inspection mode start signal to the automatic inspection repeater board 20. Automatic inspection relay board 2 receives inspection mode start signal from local repeater 18
0 sets the automatic inspection mode in the same way as when an inspection command is received from the automatic inspection management panel 28, and as a result, even if a pseudo fire detection signal is obtained in the automatic inspection mode setting state, the automatic inspection system is not activated. Control to restore the monitoring state will be prohibited.

In this way, when the automatic inspection mode is set based on the transmission of the inspection mode start signal in step S2, the process proceeds to step S3, where the inspector installs the equipment inside the housing 76 of the terminal testing device 10 as shown in FIG. The manual lever 82 of the motor-operated valve 12 is operated in the opening direction to manually open the motor-operated valve 12.

When the electric valve 12 of the terminal testing device 10 is manually opened, as shown in the explanatory diagram of the fire extinguishing equipment in FIG.
Water equivalent to one sprinkler head 54 regulated by an orifice 58 flows into the branch pipe 52 in which the manually opened electric valve 12 is installed, and this water flow activates the alarm valve 32, causing the first A fire detection signal is output to the pump control panel 22 shown in the figure. The pump control panel 22 issues a command to start the pump, and the fire pump 34 is started by driving the motor 36 shown in FIG. Further, the fire detection signal is sent to the automatic inspection relay board 20 via the pump control board 22 and also to the fire reception board 30.

The activation of the fire pump 34 is not based on the fire detection output of the alarm valve 32, but is activated by manually opening the electric valve 12 of the terminal test device 10 to activate the branch pipe 52 and the main water supply pipe 4.
2, the internal pressure of the pressure tank 48 decreases, and this pressure decrease is detected by the pressure sensor 54, and the fire pump 34 may be activated by the pump control panel 22.

In step S3 of FIG. 6, the pump is normally started by manually opening the electric valve 12, and the sprinkler system is confirmed by checking the pressure on the pressure gauge 60, etc. that the predetermined pressurized water is being supplied to the branch pipe 52. If the operation of the inspection is confirmed, the electric valve 12 in the open state is manually closed to complete the manual inspection.

Next, when the manual inspection is completed by manually closing the electric valve in step S3, the automatic inspection relay board 20 proceeds to the next step S4, receives the pressure detected by the pressure sensor 14 from the local relay 18, and receives the pressure detected by the pressure sensor 14. After confirming that the pressure is within a predetermined range in the pump's resting state, a check is made to see if a predetermined period of time has elapsed, and when the predetermined period of time has elapsed, the process proceeds to step S5, where a test is performed. The presence or absence of a detection output from a flowing water detection device provided in the pipe 52, for example the alarm valve 32, is checked. At this time, due to the completion of manual inspection, the electric valve 12
If the manual closure has been performed normally, no flowing water detection output will be obtained, so the process proceeds to step S6 and the pump control panel 22 is activated to automatically stop the pump. If there is still a detection output from the alarm valve in step S5, the pump is not stopped because there is a possibility of a fire.

Subsequently, the inspector who has completed the manual inspection closes the door 78 of the terminal testing device 10, and therefore proceeds to the next step.
In step S7, it is detected that the switch 16 that detects door opening/closing is turned off, and in step S8, the local repeater 18 is turned off.
The CPU 84 transmits an inspection mode end signal to the automatic inspection relay board 20, and upon receiving this inspection mode end signal, the automatic inspection relay board 20 cancels the automatic inspection mode and returns to the monitoring state.

By automatically stopping the pump based on the detection output of the flowing water detection device after the manual inspection shown in steps S5 and S6, even if no other inspector is present on the pump control panel 22 side, the terminal test device 10 side can be stopped. A manual inspection using the terminal testing device 10 can be performed by a single inspector without considering pump control stoppage.

FIG. 7 shows the local repeater 18 shown in FIG.
FIG. 8 is an operation flow diagram showing other control processing performed by the CPU 84 at the end of manual inspection.

In FIG. 7, the manual inspection process up to step S7 is the same as steps S1 to S6 in FIG.
The processing after door closure is detected in step S7 is different.

That is, in the control process shown in FIG.
When the switch-off of the switch 16 is detected by closing the door of the terminal testing device 10 upon completion of the manual inspection in S7, the process proceeds to step S8, where the electric valve forced closing control is performed.

Next, in step S9, the elapse of a predetermined time is checked, and when the predetermined time has elapsed, the step
Proceeding to S10, an inspection mode end signal is sent to the automatic inspection relay board 20 to cancel the automatic inspection mode and restore the initial state.

The control process at the end of the inspection shown in FIG. 7 is effective in the case where the operator forgets to close the electric valve 12 manually and closes the door.

That is, if the door is closed without closing the electric valve 12,
In the process of FIG. 6, as shown in step S8, an inspection mode end signal is transmitted from the local relay board 18 to the automatic inspection relay board 20, and the automatic inspection mode is canceled and the monitoring state is restored. However, because he forgot to close the electric valve 12, the branch pipe 5
2 has a water flow, which causes an alarm valve 32
is in a state where a fire detection output is generated. When the automatic inspection system returns to the monitoring state while the fire detection output of the alarm valve 32 is being obtained, the detection output from the alarm valve 32 is determined to be a fire detection output, and the fire reception panel 30 shown in FIG. latches the fire alarm display, resulting in a false fire alarm being issued.

When the door is closed due to forgetting to close the electric valve 12, in the control process shown in FIG. 7, the electric valve 12 is forcibly closed when the door is detected, and then the inspection mode Since the end signal is transmitted, it is possible to prevent the fire alarm display from being erroneously latched upon restoration to the monitoring state based on door closure.

Furthermore, as another embodiment of the present invention, a CPU 84 provided in the local repeater 18 shown in FIG. 5 monitors the opening time of the electric valve 12 and the opening time of the door based on the detection output of the switch 16, When the valve and door are opened, an alarm may be displayed to the inspector to prompt the inspector to close the valve and door.

In addition, in the case of manual inspection using the terminal testing device 10, the quality of the equipment is judged by looking at the instructions from the pressure gauge 60 installed in the terminal testing device 10, but various data obtained from the manual inspection are relayed, for example, to automatic inspection. Board 20
The data may be collected and stored, and after the inspection is completed, it may be possible to view various data during manual inspection by printing out or the like on the automatic inspection management board 28 installed at the center.

[Effects of the Invention] As explained above, according to the present invention, when the door of the terminal testing device is opened to perform a comprehensive sprinkler inspection manually, an inspection mode start signal is sent to the inspection panel and the inspection mode is set. Therefore, even if a pseudo fire condition is created by manually opening the electric valve, restoration control of the monitoring status based on the fire detection output at this time is prohibited, and even if automatic inspection and manual inspection are made common, manual inspection will not be affected. Inspections can be carried out.

Also, after a predetermined period of time after the manual opening/closing inspection of the electric valve is completed, the detection output of the water flow detection device of the branch pipe tested is checked, and if the detection output has stopped, a pump stop signal is sent. Since the pump automatically stops, automatic inspection can be performed on the terminal testing equipment side even if no one is present at the pump control panel, and inspection work can be carried out more efficiently because only one inspection person is required. can.

Furthermore, an inspection mode end signal is sent a predetermined time after detecting door closure during manual inspection, and the motorized valve is forcibly closed during that time, so the door can be closed even if the motorized valve has been forgotten to close. Even if this is done, it is possible to reliably prevent the state from being restored to the monitoring state by transmitting an inspection mode end signal due to door closure and from being erroneously detected as a fire state.

[Brief explanation of the drawing]

Figure 1 is a system configuration diagram of the automatic inspection system;
Fig. 2 is an explanatory diagram showing an example of a fire extinguishing equipment; Fig. 3 is an explanatory diagram of the external appearance of the terminal testing device of the present invention; Fig. 4 is an explanatory diagram showing the inside of the terminal testing device of the present invention with the door open. ; Fig. 5 is a block diagram showing an embodiment of the local repeater of the terminal testing device of the present invention; Fig. 6
The figure is an operation flow diagram showing the process operation of the terminal manual inspection according to the present invention; FIG. 7 is an operation flow diagram showing another embodiment of the process operation of the terminal manual inspection according to the present invention; FIG. It is an explanatory diagram. 10, 10a to 10n: terminal testing device, 12:
Electric valve (with manual opening/closing lever), 14: Pressure sensor, 16: Switch (for door opening/closing detection), 18: Local relay, 20: Automatic inspection relay board (inspection board),
22: Pump control panel, 28: Automatic inspection management panel, 3
0: Fire receiving panel, 32a to 32n: Alarm valve,
34: Digestion pump, 42: Main water supply pipe, 52: Branch pipe, 54: Sprinkler head, 56: Gate valve, 58: Orifice, 60: Pressure gauge, 76: Housing, 78: Door, 82: Manual lever, 84: CPU
(control means), 86, 94: interface, 8
8: Transmission line, 90: Address setting switch, 9
2: Electric valve control circuit.

Claims (1)

[Claims] 1. A fire extinguishing system equipped with an automatic inspection system that has a function of canceling the inspection mode and returning to the monitoring state if it is determined that there is a fire even during the inspection operation when the inspection mode is set. In the end piping of each floor, an electric valve that can be opened and closed manually and an orifice that flows a flow rate equivalent to one sprinkler are installed inside the housing, and a switch is installed to detect the opening and closing of the door of the housing. An inspection device for fire extinguishing equipment, further comprising a terminal testing device having a control means for setting the inspection mode by transmitting an inspection mode start signal to the inspection panel when the switch detects the opening of the door. 2. When the detection output from the flowing water detection device stops after a predetermined period of time after completing the manual inspection by manually opening and closing the electric valve with the inspection panel set to the inspection mode based on the door opening, the pump control panel indicates that the pump A control means is provided to automatically stop the pump by transmitting a stop signal, and to return to the monitoring state when the pump is stopped and an inspection mode end signal is received from the terminal testing device when door closure is detected. The inspection device for fire extinguishing equipment according to claim 1, characterized in that: 3. The inspection device for fire extinguishing equipment according to claim 2, wherein the terminal testing device is provided with a control means for forcibly driving the electric valve to close when the closing of the door is detected after the manual inspection is completed. .