JP2003265641A - Fire extinguishment equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce power consumption and to improve the response of closing control when open/close-controlling the supply of water for fire fighting to a sprinkler head. <P>SOLUTION: A control valve 9 for controlling the supply and stop of the water for fire fighting to the sprinkler head is close-controlled by the supply of controlling pressure from outside to a control port Pc and open-controlled by opening of the controlling pressure. With a control signal from a sprinkler control panel 16, the supply of the water for fire fighting is open-controlled by switching an electromagnetic three-way switch valve 20 so as to communicate the control port Pc of the control valve 9 with a drain pipe, and is close- controlled by switching the three-way switch valve 20 so as to communicate the control port Pc with a primary piping side and applied water pressure of water for fire fighting. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing facility that discharges water for extinguishing a fire from a sprinkler head when a fire occurs, and more particularly to a fire extinguishing facility that controls water discharge by using each dwelling unit of an apartment house as one protection zone.

[0002]

2. Description of the Related Art Conventionally, as a fire extinguishing facility, a motorized valve provided in a fire extinguishing pipe is forced when a malfunction occurs after a closed head is actuated and water discharge is started or when a fire is extinguished. A fire-extinguishing system configured to stop water discharge from a closed-type head by controlling the closing of the head is considered.

Conventionally, as this type of fire extinguishing equipment, for example, there is one shown in FIG. 5 (Japanese Patent Laid-Open No. 10-5365).

In FIG. 5, a fire extinguishing pump 101 and a motor 102 are installed on a basement floor of a building, etc., and the fire extinguishing pump 101 is driven by driving the motor 102 by the pump control panel 115 to pump up the fire extinguishing water in the water storage tank 103. The water is supplied under pressure to the main water supply pipe 104 that is vertically piped in the building.
An elevated water tank 105 is installed on the roof of the building, and the water supply main 1
04 is always filled with fire extinguishing water.

Further, in order to operate the fire pump 101 for keeping the internal pressure of the water main 104 at a specified pressure, the pressure tank 113 is branched and connected, and the internal pressure of the main water 104 is introduced to compress the internal air. is doing. Also pressure tank 1
13 is provided with a pressure switch 114, and the pressure switch 114 is turned on when the internal pressure of the pipe drops below a prescribed pressure due to the operation of the sprinkler head, and the pump control panel 115 drives the motor 102 to extinguish the fire by detecting this on. The pump 101 is operated.

A branch pipe 106 is drawn out from the water main 104 for each floor of the building through a flow detector 108, and a closed type sprinkler head 110 is connected to the branch pipe on the secondary side of the flow detector 108. ing. A control valve 107 is provided on the primary side of the water flow detection device 108.

The control valve 107 can be controlled to be opened and closed by driving a motor, for example, and is kept open in a steady monitoring state.
Therefore, the internal pressure of the main water supply pipe 104 is supplied to the secondary side sprinkler head 110 through the control valve 107 and the flowing water detection device 108 in the open state of the branch pipe 106,
It is in the same pressurized water supply state as the conventional wet sprinkler equipment.

The running water detection device 108 is a running water detection switch 1
09 sprinkler head 1 due to fire
10 is activated and water for extinguishing fire is discharged, and a valve opening or pressure drop due to a water flow is detected to detect a running water detection switch 109.
Is turned on and a running water detection signal is output.

A terminal test valve 11 is provided at the end of the branch pipe 106.
1 and the orifice 112 are connected, and a pressure gauge 142 is further provided. When the terminal test valve 111 is opened during inspection, a water amount corresponding to the operation of one sprinkler head determined by the orifice 112 flows, which causes the simulated water flow detection device 108 to operate to perform a test operation such as pump operation. You can

A water flow detection signal E1 from a water flow detection switch 109 provided in the water flow detection device 108 is given to a sprinkler control panel 116. A control signal E4 for the control valve 107 is output from the sprinkler control board 116.

On the other hand, a fire detector 118 is installed in the protective section of the sprinkler head 110. Fire detector 1
18 detects a fire and sends a fire detection signal E2 to the fire receiving panel 1
When the fire is detected by the fire reception board 120, the fire signal E3 is sent to the sprinkler control board 116 as a notification signal.

This fire extinguishing facility is equipped with a sprinkler head 1
When 10 operates for some reason to start extinguishing the fire, a running water detection signal E1 is output from the running water detection switch 109 of the running water detection device 108 provided in the middle of the branch pipe 106 to the sprinkler control panel 116.

When the sprinkler control panel 116 receives the running water detection signal E1, and the fire detection signal E2 from the fire detector 118 does not receive the fire signal E3 from the fire receiving panel 120, the control valve in the open state. 107
To control closing. Therefore, the sprinkler head 110
Water will be temporarily stopped.

After that, when the fire signal E3 from the fire receiving board 120 based on the fire detection signal E2 is received from the fire detector 118, the control valve 107 is controlled to be opened again to continue the water discharge. Therefore, when the running water detection signal E1 is received and the fire signal E3 is not received, the control valve 107 is closed and controlled, so that water loss can be prevented when the sprinkler head 110 malfunctions.

As another fire extinguishing facility, there is also a fire extinguishing facility in which a water discharge stop switch is provided in the monitoring area and the electric valve provided in the pipe is forcibly closed and controlled by operating the water discharge stop switch.

[0016]

However, in the conventional fire extinguishing equipment, it is necessary to control the opening / closing of the electrically operated valve provided in the middle of the piping, but such an electrically operated valve is an electrically operated valve capable of flowing a predetermined flow rate. Therefore, power consumption is required to control the opening and closing. On the contrary, in order to reduce the power consumption of the motor-operated valve, it is necessary to reduce the number of connections of the closed type sprinkler head, which makes the construction complicated when it is installed in a large-scale fire extinguishing facility.

Further, as the motor-operated valve becomes large, it takes time from the start of the closing control to the complete closing,
It is also possible that the damage due to water damage will increase.

It is an object of the present invention to provide a fire extinguishing system capable of saving the power consumption and enhancing the response of the closing control when controlling the supply of the fire extinguishing water to the sprinkler head.

[0019]

To achieve this object, the present invention is constructed as follows. The present invention relates to a fire receiver for monitoring a fire in a protective compartment by connecting a fire detector installed in the protective compartment to a detector line, a sprinkler head arranged in the protective compartment, and water for extinguishing fire to the sprinkler head. The control valve that controls supply and stop, the running water detection device that detects running water for fire extinguishing water due to the operation of the sprinkler head, and the control valve that controls the fire signal from the fire receiver and the running water detection signal from the running water detection device. Fire extinguishing equipment equipped with a sprinkler control panel that controls the supply of water for fire extinguishing.

According to the present invention relating to such a fire extinguishing facility, the control valve for controlling the supply and stop of the fire extinguishing water to the sprinkler head is closed and controlled by supplying a control pressure from the outside to the control port. Control valve from the sprinkler control panel to switch the control port of the control valve to the drain pipe for open control, and also switch the control port to the primary piping side to extinguish water. It is characterized in that a switching valve for controlling the closing by the water pressure supply is provided.

As described above, according to the present invention, instead of the motor operated valve,
By installing a control valve that controls the opening and closing by using the water pressure of the fire extinguishing water on the next pipe side, it is not necessary to drive electricity, and it is necessary to consider the facility power for the increase in the number of control valves and the increase in the number of installations. Therefore, the water pressure of the primary pipe can be effectively used as an energy source to provide energy-saving equipment.

Further, the control of closing the control valve is performed by the water pressure when the water for extinguishing fire is supplied to the control port, so that the response time of the closing control is shorter than that of the motor-driven motor-operated valve, and the time until the water discharge is stopped is shortened. Therefore, water damage damage can be suppressed.

According to another aspect of the present invention, there is provided a fire extinguishing system including a sprinkler head arranged in a protective compartment, and a control valve for controlling supply and stop of fire extinguishing water to the sprinkler head. The valve is a control valve that is closed by supplying control pressure from the outside to the control port and is opened by opening the control pressure.Furthermore, the control port of the control valve is switched to the drain pipe by manual operation and open control is performed. In addition to that, a switching valve for switching the control port to the primary pipe side and controlling the closing by supplying water pressure of the fire extinguishing water is provided.

As described above, the water discharge stop due to the malfunction of the sprinkler head and the water discharge stop after the fire is extinguished by the sprinkler head can be easily and quickly performed by the manual operation of the switching valve.

According to another aspect of the present invention, there is provided a fire extinguishing facility equipped with a sprinkler head arranged in a protective compartment and a control valve for controlling supply and stop of fire extinguishing water to the sprinkler head, The control valve is a control valve that is closed by supplying a control pressure from the outside to the control port, and is controlled to be opened by opening the control pressure. Furthermore, the control port of the control valve is switched to the drain pipe to control the opening. A switching valve for switching the control port to the primary piping side to control the closing by water pressure supply of fire extinguishing water, and a manual operation switch for switching control of the switching valve are provided.

As described above, the water discharge stop due to the malfunction of the sprinkler head and the water discharge stop after the fire is extinguished by the sprinkler head can be easily and quickly performed by a remote switch operation for the switching valve.

Here, tap water may be supplied to the sprinkler head as water for extinguishing fire, or simple fire extinguishing equipment which does not require fire extinguishing pump equipment may be used. Further, since the switching valve is one three-way switching valve, the opening / closing control of the control valve can be performed more easily and quickly with one three-way switching valve.

[0028]

FIG. 1 is an explanatory view showing an embodiment of a fire extinguishing facility according to the present invention. In FIG. 1, the fire extinguishing pump 1 and the motor 2 are provided on the basement floor of the building to be protected.
The fire extinguishing pump 1 is driven by the drive of the motor 2 by the pump control panel 15, the fire extinguishing water in the water source water tank 3 is pumped up, and the fire extinguishing water is pressurized and supplied to the water supply main 4 vertically piped in the building. There is. An elevated water tank 5 is installed on the roof of the building, and the water supply main 4 is constantly filled with fire extinguishing water.

The pressure tank 1 for operating the fire pump 1 so that the internal pressure of the main water supply pipe 4 is maintained at the specified pressure.
3 is branched and connected, and the internal pressure of the main water supply pipe 4 is guided to compress the internal air. The pressure tank 13 is provided with a pressure switch 14, and the pressure switch 1 is activated when the internal pressure of the pipe drops below a specified pressure by the operation of the sprinkler head 10.
4 is turned on, and when the pressure switch 14 is detected to be turned on, the pump control panel 15 drives the motor 2 to operate the fire pump 1.

From the water supply main 4, branch pipes 6 are provided for each floor of the building.
Is drawn out via the water flow detection device 7 and the control valve 9, and a closed type sprinkler head 10 is connected to a branch pipe on the secondary side of the control valve 9. A terminal test valve 11 and an orifice 12 are connected to the end of the branch pipe 6, and the pressure gauge 1
9 is provided.

When the terminal test valve 11 is opened at the time of inspection, an amount of water corresponding to the operation of one sprinkler head determined by the orifice 12 flows, which causes the simulated water flow detecting device 7 to operate, thereby performing a test operation such as pump operation. Can be done.

The running water detection device 7 provided in the branch pipe 6 is provided with a running water detection switch 8. When the fire extinguishing water flows by the operation of the sprinkler head 10, the running water detection switch 8 is turned on and the running water detection signal E1 is sent. Output to the control panel 16. The control valve 9 provided on the secondary side of the flowing water detection device 7 has a structure that can be opened / closed by supplying and releasing a control pressure to the control port Pc.

The control port Pc of the control valve 9 is connected to a pipe from an electromagnetic three-way switching valve 20 for switching and controlling the water pressure of the fire extinguishing water in the branch pipe 6 which is the primary pipe of the water flow detection device 7. . The electromagnetic three-way switching valve 20 is equipped with switching ports a and c and a common port b, and the electromagnetic solenoid is driven by the control signal E4 from the sprinkler control panel 16 to switch the common port b between the switching ports a and c. .

The control valve 9 is open-controlled in a state where the water pressure for extinguishing water is not applied to the control port Pc, and has a structure in which it is closed when water pressure for extinguishing water is applied. Normally, since the control valve 9 is in the open control state, the electromagnetic three-way switching valve 20 has the common port b drained from the switching port c like the electromagnetic three-way switching valve 20b in the frame of the two-dot chain line shown on the left side. The hydraulic pressure supply to the control port P of the control valve 9 is released in this switching state.

When the control valve 9 is closed, the sprinkler control board 16 outputs a control signal E4. When the electromagnetic solenoid of the electromagnetic three-way switching valve 20 is driven in response to this control signal E4, the electromagnetic three-way switching valve 20a shown in a two-dot chain line is switched. That is, the electromagnetic three-way switching valve 2
In the switching state of 0a, the switching port a is set to the common port b.
Since the switching port a is connected to the branch pipe 6 on the primary side of the flowing water detection device 7, the water pressure for extinguishing water is introduced from the branch pipe 6 and supplied to the control port Pc of the control valve 9. When the control port Pc receives the water pressure of the fire extinguishing water in the switching state of the electromagnetic three-way switching valve 20a, the control valve 9 is controlled to be closed.

FIG. 2 is a sectional view showing an embodiment of a specific valve structure of the control valve 9 of FIG. 2, the control valve 9 is provided with an inflow connection port 22 on the left side of the valve body 21 and an outflow connection port 23 on the opposite side, and the inflow connection port 22 is on the secondary side of the running water detection device 7 of FIG. From the sprinkler head 1 of FIG. 1 is connected to the outflow connection port 23.
The branch pipe 6 on the secondary side for 0 is connected.

The flow path from the inflow connection port 22 and the flow path to the outflow connection port 23 in the valve main body 21 are vertically located inside and communicate with each other through the valve seat opening 24. A valve seat 25 is formed on the upper part. A cylinder 30 is formed above the valve seat 25, and a valve piston 26 is slidably accommodated in the cylinder 30.

A seat packing 27 is attached to the lower portion of the valve piston 26, and a spring 2 is provided between the valve piston 26 and the valve seat 25 side.
I have put 8. A control port connection port 31 is provided to the upper cylinder chamber 30a partitioned by the valve piston 26, and a pipe from the common port b of the electromagnetic three-way switching valve 20 of FIG. 1 is connected to the control port connection port 31. The cylinder chamber 30b below the valve piston 26 is open to the atmosphere through a communication port 29.

Further, a piston shaft 42 is integrally formed on the upper part of the valve piston 26, and a switch 41 on the upper part of the valve body is operated according to the position of the valve piston 26 to open / close the control valve 9 on the sprinkler control panel 16. To inform.

In the control valve 9 having such a structure, in the normal monitoring state, the hydraulic pressure supply of the fire extinguishing water from the electromagnetic three-way switching valve 20 to the control port connection port 31 is canceled. Force of spring 28 and branch pipe 6
As shown in the figure, the valve piston 26 is pushed upward by the water pressure in the seat, the seat packing 27 is separated from the valve seat 25, and the inflow connection port 22 and the outflow connection port 23 are communicated with each other through the valve seat opening 24. ing. At this time, the piston shaft 42 actuates the switch 41 and sends an open state signal to the sprinkler control board 16.

When the hydraulic pressure of the fire extinguishing water is supplied to the control port connection port 31 from the electromagnetic three-way switching valve 20 in this open state,
This water pressure is introduced into the cylinder chamber 30a, and the spring 2
8, the valve piston 26 is pushed down, the seat packing 27 is pressed against the valve seat 25 to close the valve seat opening 24, and the communication between the inflow connection port 22 and the outflow connection port 23 is closed. At this time, since the valve piston 26 is descending, the piston shaft 42 separates from the switch 41, and the closed state signal is transmitted to the sprinkler control panel 16.

Since the control of closing the control valve 9 by the water pressure supply of the fire extinguishing water is performed by the movement of the valve piston 26 by the water pressure supply to the cylinder chamber 30a, the closing of the valve by the motor drive in the conventional electric valve is performed.
The closing control can be completed in a very short time.

When it is desired to open the control valve 9 which is closed by the water pressure supply of the fire extinguishing water, the electromagnetic three-way switching valve 20 switches the control port connection port 31 to the water distribution pipe side, and the water pressure applied to the cylinder chamber 30a. Spring 2 by pulling out
The force of 8 pushes up the valve piston 26 as shown in the drawing to open it.

Next, the control processing by the sprinkler control board 16 in the embodiment of FIG. 1 will be described. In the steady monitoring state, the running water detection switch 8 provided in the running water detection device 7
Since the running water detection signal E1 from the fire detector 17 is off and there is no fire signal E3 from the fire receiver 17, the control signal E4 of the sprinkler control panel 16 is also off, and the electromagnetic three-way switching valve 20 has a common port b like 20b. 2 is switched to the water pipe side, and the supply of the water pressure for extinguishing water to the control port Pc of the control valve 9 is cut off. Therefore, the valve piston 26 in FIG. Has become.

If a fire occurs and one of the sprinkler heads 10 is activated by the heat flow caused by the fire, the sprinkler operated from the branch pipe through the water flow detection device 7 and the control valve 9 in the open control state. The fire extinguishing water flows to the head 10, so that the running water detection switch 8 is turned on and outputs the running water detection signal E1.

In the sprinkler control panel 16 which has received the running water detection signal E1, since the fire signal E3 from the fire receiver 17 is not obtained at this time, the control signal E
4 is output to bring the electromagnetic three-way switching valve 20 into the switching state in which the electromagnetic three-way switching valve 20a is taken out to the left by the two-dot chain line, that is, the switching port a is communicated with the common port b.

As a result, the fire extinguishing water in the branch pipe 6 on the primary side of the flowing water detection device 7 is supplied to the control port Pc of the control valve 9 through the electromagnetic three-way switching valve 20, and receives the water pressure of the fire extinguishing water, as shown in FIG. When water pressure is applied to the cylinder chamber 30a, the valve piston 26 descends against the spring 28 and presses the seat packing 27 against the valve seat 25, thereby closing the valve seat opening 24 and setting the closed control state. As a result, the supply of fire extinguishing water to the activated sprinkler head 10 connected to the branch pipe 6 on the secondary side of the control valve 9 is stopped.

After that, when the fire detector 18 issues a heat flow due to a fire, the fire detector 17 receives the fire detection signal E2 from the fire detector 18 that issued the fire, and the fire signal E3 as a transfer signal. Is output to the sprinkler control board 16. Sprinkler control panel 1 that received fire signal E3
6 stops the output of the control signal E4 to the electromagnetic three-way switching valve 20, so that the electromagnetic three-way switching valve 20 is switched to the switching state of 20b shown on the left side, that is, the common port b is communicated with the water pipe side of the port c. Then, the water pressure for extinguishing water applied to the control port Pc of the control valve 9 is released.

By releasing the water pressure, the valve piston 26 of FIG. 2 in the control valve 9 which has been in the open control state returns to the open control state shown by the force of the spring 28, and the sprinkler head 10 in operation is extinguished. The supply of water will be restarted and water will be discharged.

On the other hand, when the pressure switch 14 provided in the pressure tank 13 is turned on when the pressure inside the water supply main pipe 4 drops below the specified pressure due to the discharge of fire extinguishing water accompanying the operation of the sprinkler head 10, the pump is turned on. The control panel 15 drives the motor 2 to operate the fire extinguishing pump 1, whereby the water extinguishing water is continuously supplied from the water source water tank 3 to the water supply main 4 under pressure, and the extinguishing water from the activated sprinkler head 10 is supplied. Water discharge is continued.

When the fire detector 18 first issues a warning and a fire signal E3 is output from the fire receiver 17 to the sprinkler control panel 16 when a fire occurs, the control signal E4 is output to the electromagnetic three-way switching valve 20. Control valve 9
The open state of is maintained. In this state, when the sprinkler head 10 is actuated next by receiving the heat flow due to the fire, the running water detection switch 8 of the running water detection device 7 is turned on to output the running water detection signal E1, and the open state of the control valve 9 is maintained as it is. The fire extinguishing water is continuously discharged from the activated sprinkler head 10.

Further, when an accident occurs due to something other than a fire, such as an interior construction work, causing the sprinkler head 10 to malfunction, a flowing water detection signal E1 is obtained by turning on the flowing water detection switch 8 of the flowing water detection device 7. Since it is not a fire at this time, the fire signal E3 from the fire receiver 17 is not output, and the sprinkler control panel 16 outputs the control signal E4 to the electromagnetic three-way switching valve 20. By switching to the state, the water pressure of the fire extinguishing water is supplied to the control port Pc of the control valve 9, and the control valve 9 is controlled to be closed.

When the control valve 9 is controlled to be closed, the fire signal is not obtained thereafter, so that the closed control state is continuously maintained. As a result, it is possible to minimize water loss due to discharge of fire extinguishing water when the sprinkler head 10 malfunctions due to a cause other than a fire.

FIG. 3 shows another embodiment of the present invention. This embodiment is characterized in that it is a simple fire extinguishing facility capable of stopping the discharge of fire extinguishing water from the sprinkler head by manual operation. .

In FIG. 3, the branch pipe 6 branched from the water supply main pipe 31 to which the fire extinguisher water is supplied is closed via the control valve 9 having the structure shown in FIG. A mold sprinkler head 10 is connected. The closed type sprinkler head 10 is installed with its tip exposed on a ceiling 34 in a dwelling unit. In this embodiment, for example, the branch pipes 6 are divided for each section in the dwelling unit.
Are connected to the control valve 9 and the sprinkler head 10, respectively.

A manual three-way switching valve 33 is provided for each control valve 9. The manual three-way switching valve 33 has switching ports a and c and a common port b. The switching port a is connected to the water supply pipe 32, the switching port c is connected to the water pipe side, and the common port b is controlled by the control valve 9. It is connected to the port Pc. The manual three-way switching valve 33 is installed at a position where a room in a dwelling unit can be manually operated, and has a handle 33a.
By operating the switch port a for the common port b,
The communication state of c can be switched.

In the normal monitoring state, the handle 33a
Thus, the manual three-way switching valve 33 is switched to a state in which the common port b communicates with the switching port c on the water pipe side.
Therefore, the control port Pc of the control valve 9 is the manual three-way switching valve 3
3 is connected to the water distribution pipe side, the water pressure of the fire extinguishing water for the control port Pc is released, and the control valve 9 is open.

In this state, when the sprinkler head 10 is actuated by a fire, the fire extinguishing water is supplied from the water supply pipe 32 through the control valve 9 in the open state and is sprayed. If the extinguishing of the fire can be confirmed by sprinkling water for extinguishing water from the activated sprinkler head 10, the handle 33a of the manual three-way switching valve 33 provided corresponding to the control valve 9 of the activated sprinkler head 10 is stopped. That is, the common port b is switched to a position communicating with the switching port a.

For this reason, the control port P is supplied via the manual three-way switching valve 33 in which the fire extinguishing water from the water supply pipe 32 is switched.
2 and the hydraulic pressure is applied to the cylinder chamber 30a of the control valve 9 shown in FIG. 2, the valve piston 26 descends, and the valve seat 25 is closed and closed control is performed. As a result, it is possible to stop the discharge of fire extinguishing water from the activated sprinkler head 10.

FIG. 4 shows another embodiment of the fire extinguishing equipment according to the present invention. In this embodiment, tap water is used as fire extinguishing water, and water is discharged by operating a manual push button switch provided in the dwelling unit. It is characterized in that it can be stopped.

In FIG. 4, a control valve 9 is connected to a branch pipe 6 branched from a water pipe 35 provided as a supply source of water for extinguishing a fire via a check valve 36 for preventing a backflow. A closed type sprinkler head 10 is connected to a branch pipe on the secondary side of the control valve 9.

The opening / closing control of the control valve 9 is performed by the electromagnetic three-way switching valve 20.
Done in. Similar to the embodiment of FIG. 1, the electromagnetic three-way switching valve 20 has switching ports a and c and a common port b. The switching port a is connected to the branch pipe 6 side of the primary side of the control valve 9, and the switching port c is connected. It is connected to the water pipe side and the common port b is connected to the control port Pc of the control valve 9.

The switching control of the electromagnetic three-way switching valve 20 can be performed by the manual push button switch 38 provided in the operation box 37 installed in a place where it is easy to operate in the dwelling unit. The operation box 37 is provided with a power supply section for switching and driving the electromagnetic three-way switching valve 20, and when the manual push button switch 38 is turned on, the power supply voltage is supplied from this power supply to the electromagnetic three-way switching valve 20 as a control signal E4. The switching for closing the control valve 9 is performed.

Further, in this embodiment, the pressure switch 40 is provided in the branch pipe on the secondary side of the control valve 9, and in the normal monitoring state, tap water is supplied by the open control state of the control valve 9. In response to this, the pressure switch 40 is turned on, but when the sprinkler head 10 is activated and tap water is discharged, the pipe internal pressure is reduced and the pressure switch 40 is turned off.

The pressure detection signal of the pressure switch 40 is given to, for example, a sprinkler control panel or a fire reception panel provided for each dwelling unit, and the pressure detection signal when the pressure switch 40 is turned off by the operation of the sprinkler head 10 indicates a fire or a fire. It can be used for signal transfer.

Next, the operation of the embodiment shown in FIG. 4 will be described. In the normal monitoring state, the control signal E4 for the electromagnetic three-way switching valve 20 is off, and the electromagnetic three-way switching valve 20 is in the switching state in which the common port b communicates with the switching port c on the water pipe side, and the control valve The water pressure of the tap water to the control port P of 9 is released. Therefore, the control valve 9 is in the open control state, and tap water from the water pipe 35 is added to the sprinkler head 10 via the check valve 36.

Sprinkler head 1 due to fire
When 0 is activated, tap water as fire extinguishing water flows from the water pipe 35 through the control valve 9 in the open control state, and water is discharged from the activated sprinkler head 10 to extinguish the fire.
If the extinguishing of the fire can be confirmed by the water discharge by the operation of the sprinkler head 10, the manual push button switch 38 provided in the operation box 8 is turned on, the control signal E4 is output, and the electromagnetic three-way switching valve 20 is driven. Common port b
Is communicated with the switching port a.

For this reason, tap water from the branch pipe 6 on the primary side of the control valve 9 passes through the electromagnetic three-way switching valve 20 to control port P.
2 and the cylinder chamber 30 of the control valve 9 shown in FIG.
When the water pressure is applied to a, the valve piston 26 is lowered, and the seat packing 27 is pressed against the valve seat 25 to close the valve seat opening 24, and the control valve 9 is controlled to be closed, whereby the water is discharged from the sprinkler head 10 operated. Stops.

If the sprinkler head 10 malfunctions due to something hitting it, regardless of a fire, the manual push button switch 38 of the operation box 37 is immediately turned on to output the control signal E4. The electromagnetic three-way switching valve 20 operates to apply water pressure to the control port Pc, and thereby the control valve 9 is controlled to be closed to stop water discharge from the malfunctioning sprinkler head 10 and minimize water loss. it can.

Also in the embodiment using the manual three-way switching valve 33 in FIG. 3, the water supply pipe 35 can be used as the water supply pipe 32 in the same manner as in the embodiment in FIG. Similarly, a check valve 36 may be inserted in the branch portion so as to prevent the backflow from the branch pipe side to the water pipe side.

Further, although the above-mentioned embodiment takes as an example the fire extinguishing equipment in which each dwelling unit of the housing complex is used as a protective section, the present invention is not limited to this, and a fire reception panel or a sprinkler control panel can be provided in a monitoring room or the like. It can also be applied to building facilities that are centrally provided.

As for the overall construction of the fire extinguishing equipment, the control valve 9 and a three-way switching valve (manual or electromagnetic type) for switching between open and closed may be provided in the pipe for the closed type sprinkler head, and other configurations are different. It may be one. For example, the positions of the water flow detection device 7 and the control valve 9 may be the control valve 9 on the primary side, contrary to the above embodiment.

If the switching valve is a three-way switching valve, simple and quick control can be performed, but a plurality of switching valves can be used instead of the three-way switching valve. Further, the sprinkler control panel and the fire receiver may be configured in the same control panel.

In the above embodiment, the control valve is normally opened, but it is normally closed and the control valve is opened when the fire signal from the fire detector is received. Even if it exists, the present invention can be applied.

[0075]

As described above, according to the present invention, a control valve having a structure for controlling opening / closing by utilizing the water pressure of the fire extinguishing water on the primary pipe side is provided in place of the motor operated valve. It does not require power drive for opening / closing control, and there is no need to consider power equipment for larger control valves and an increase in the number of installations. Energy-saving fire extinguishing equipment that effectively uses water pressure on the primary piping side as an energy source. Can be

Further, the control of closing the control valve is performed by the water pressure when the water for extinguishing fire is supplied to the control port by the control of the three-way switching valve, so that the response time of the closing control is shorter than that of the motor-driven motor-operated valve, and the water discharge is stopped. It is possible to shorten the time until and to minimize water damage damage. Further, even if the three-way switching valve is an electromagnetic three-way switching valve, it is possible to reduce power consumption more than the motor-operated valve.

According to another aspect of the present invention, a control valve which is open-controlled in a steady state is remotely controlled by a water pressure of the fire extinguishing water by a three-way switching valve which is manually operated or manually switched by a push button switch. Since it is possible to perform closing control by introducing the above, it is possible to easily and quickly perform the water discharge stop after the fire is extinguished by the sprinkler head and the water discharge stop due to the malfunction of the sprinkler head by a pseudo operation.

Further, by using tap water as the fire extinguishing water supplied to the sprinkler head, it is possible to easily realize a simple fire extinguishing equipment which does not require a fire extinguishing pump equipment.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a fire extinguishing facility according to the present invention.

FIG. 2 is a sectional view showing the structure of the control valve used in FIG.

FIG. 3 is an explanatory diagram showing another embodiment of the present invention in which manual switching is performed.

FIG. 4 is an explanatory view showing another embodiment of the present invention in which remote switching is performed by a manual push button switch.

FIG. 5 is an explanatory diagram showing a conventional fire extinguishing facility.

[Explanation of symbols]

1: Fire pump 2: Motor 3: Water source tank 4: Water main 5: Elevated water tank 6: Branch pipe 7: Water flow detector 8: Running water detection switch 9: Control valve 10: Sprinkler head 11: Terminal test valve 12: Orifice 13: Pressure tank 14: Pressure switch 15: Pump control panel 16: Sprinkler control panel 17: Fire receiver 18: Fire detector 18: Control valve 20: Solenoid three-way switching valve 21: Valve body 22: Inflow connection port 23: Outflow connection port 24: valve seat opening 25: valve seat 26: Valve piston 27: Seat packing 28: Spring 30: Cylinder 31: Control port connection port 32: Water supply piping 33: Manual three-way switching valve 34: Ceiling 35: Water pipe 36: Check valve 38: Manual push button switch

Claims (5)

[Claims] 1. A fire receiver for connecting a fire detector installed in a protective compartment to a detector line to monitor a fire in the protective compartment, a sprinkler head arranged in the protective compartment, and a sprinkler head. A control valve for controlling the supply and stop of fire extinguishing water, a running water detection device for detecting running water of fire extinguishing water due to operation of the sprinkler head, a fire signal from the fire receiver and a running water detection signal from the running water detection device In a fire extinguishing equipment comprising a sprinkler control panel for controlling the control valve to control the supply of water for extinguishing water, the control valve is controlled to be closed by supplying a control pressure from the outside to the control port to perform the control. It is a control valve that is controlled to open when pressure is released. Furthermore, the control port of the sprinkler control panel switches the control port of the control valve to the drain pipe. Causes controlled to open, fire extinguishing equipment, characterized in that a changeover valve for closing controlled by pressure supply of fire extinguishing water by switching the control port to the primary pipe side. 2. A fire extinguishing facility comprising a sprinkler head arranged in a protective compartment, and a control valve for controlling supply and stop of water for extinguishing fire to the sprinkler head, wherein the control valve is external to a control port. Is a control valve that is closed by supplying control pressure from the control valve and is opened by opening the control pressure. Further, the control port of the control valve is switched to the drain pipe by manual operation to perform the open control, and the control is performed. Fire extinguishing equipment, which is provided with a switching valve for switching the port to the side of the primary pipe and controlling the closing by water pressure supply of fire extinguishing water. 3. A fire extinguishing facility comprising a sprinkler head arranged in a protective compartment, and a control valve for controlling supply and stop of fire extinguishing water to the sprinkler head, wherein the control valve is external to a control port. Is a control valve that is closed by supplying control pressure from the control valve and is opened when the control pressure is released. Further, the control port of the control valve is switched to a drain pipe to perform the open control, and the control port is set to 1 A fire-extinguishing facility comprising: a switching valve that is switched to the next pipe side to be closed by water pressure supply of fire-fighting water; and a manual operation switch that controls switching of the switching valve. 4. The fire extinguishing equipment according to claim 2 or 3,
Fire extinguishing equipment, characterized in that tap water is supplied to the sprinkler head as fire extinguishing water. 5. The fire extinguishing equipment according to any one of claims 1 to 3, wherein the switching valve is formed by one three-way switching valve.