JP2001259069A - Water sprinkling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a water sprinkling system in which state restoration can be confirmed after checking by realizing a remote check of automatic valves. SOLUTION: The automatic value is provided with a valve element for dividing the inside of a main body into the primary side and the secondary side with a partition and closing a seat formed at the partition. The automatic valve is also provided with a gate valve for closing water flow secondary to a water discharging part, a maintenance water discharging valve for discharging water secondary in addition to a branch piping, a starting valve for opening the valve body and a switch means for detecting the movement of the valve. After closing the gate valve and opening the maintenance water discharging valve, a remote controller starts the starting valve and remotely confirms signals from the switch means. Thus, an operator no longer has to operate a plurality of automatic valves moving around a job site, and even if a failure should occur, the remote controller performs alarming, displaying, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watering system which operates when a fire occurs in a road traffic tunnel or the like.

[0002]

2. Description of the Related Art In a conventional watering system, for example, when used in a tunnel, its longitudinal direction is set at a predetermined distance.
A fire section is set by dividing the area into 25 m or 50 m, a fire section including the fire point is specified when a fire occurs, and water is sprayed over the entire area of the fire section. FIG. 12 schematically shows the system in this case. The watering system includes a pressurized water supply source such as a pump 2 for supplying fire-extinguishing water in a water storage tank 1, a main pipe 4 connected to the pressurized water supply source, extending into the tunnel 3 and supplying pressurized water into the tunnel 3, A plurality of branch pipes 5 connected to the main pipe 4 in the tunnel 3 are provided.

The main pipe 4 is buried in a so-called inspection path 6 in the tunnel 3 and extends into the tunnel 3. Then, in each fire protection section, the main pipe 4 rises along the side wall of the tunnel 3, and the tip of each tunnel 3
Head 7 for sprinkling pressurized water in a predetermined area
Is connected. One or more required number of water discharge heads 7 are provided depending on the size of the fire protection compartment.
The branch pipe 5 is provided with a gate valve 8 and an automatic valve 10 provided on a secondary side thereof. The automatic valve 10 is opened in the event of a fire or the like to supply pressurized water to the water discharge head 7, and is closed after the fire is extinguished to stop the supply of the pressurized water.

As an example of such an automatic valve 10, as shown in FIG. 13, a valve seat 12 opens and closes a valve opening and a main body 14 having a partition 13 divided into a primary side A and a secondary side B. It has a valve body 15 and a cylinder device 33 which has a cylinder 18 inside which a piston 17 connected to the valve body 15 and urged by a spring 16 is provided to open and close the valve 15. The primary side A communicates with a pressurizing chamber 34 disposed in the cylinder 18 via a pressurizing flow path 25 having a strainer 19, a remote start valve 20, an exhaust valve 21, a manual start valve 22, and an orifice 23. I have. Further, the pressurizing flow path 25 includes a needle valve 26 and a pressure adjusting valve 27 and communicates with the secondary side B via a discharge pressure flow path 35.

[0005] When the remote start valve 20 of the pressurizing flow path 25 is opened, the primary pressure is introduced into the pressurizing chamber 34 of the cylinder 18 to push up the piston 17 and open the valve body 15. When the remote start valve 20 is closed, the pressure in the pressurizing chamber 34 is discharged to the secondary side B, and the valve body 15 is closed. In this way, by opening and closing the remote start valve 20 as necessary, it is possible to spray water on the section where the fire has occurred.

[0006]

SUMMARY OF THE INVENTION Such an automatic valve 10 is disclosed.
Inspection work is also conducted periodically, but the following operation is performed for the simple water discharge test among various items. First, the water control valve 49 arranged on the secondary side B of the automatic valve 10 is closed, and the maintenance water discharge valve 32 is opened. Next, the manual start valve 22 is opened to cause the automatic valve 10 to perform an opening operation.
Then, since the connected rod 15a protrudes based on the opening of the valve body 15 of the automatic valve 10, the opening of the automatic valve 10 can be visually confirmed. Further, by providing a pressure gauge in a pipe connected to the secondary side B of the automatic valve 10 and serving as a flow path of the maintenance water discharge valve 32, the pressure regulating function of the automatic valve 10 can be confirmed together with the flowing water. Thereafter, the manual start valve 22 is closed to close the valve body 15 of the automatic valve 10, and then the water control valve 49 is opened and then the maintenance water discharge valve 32 is closed to restore the initial state.

[0007] At this time, the operator must go to the installation site for inspection, and must manually open and close a plurality of valves. Therefore, it is inevitable that forgetting to close or open does not occur.

The present invention enables remote inspection of an automatic valve,
The purpose of the sprinkling system is to check the return condition after inspection.

[0009]

According to a first aspect of the present invention, there is provided a watering system for watering a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply the pressurized water; It comprises a plurality of branch pipes branched from the main pipe for each predetermined section, a water discharge section connected to each of the branch pipes to spray pressurized water to the corresponding section, and an automatic valve provided for each of the branch pipes. , The automatic valve is provided with a valve body that partitions a primary side and a secondary side in the main body with a partition wall and closes a valve seat formed in the partition wall, and closes water flowing from the secondary side to the water discharge section. A water control valve, a maintenance water discharge valve for discharging water separately from the branch pipe from the secondary side, a start valve for opening the valve body, and switch means for detecting the movement of the valve body; After closing the water valve and opening the maintenance water discharge valve, the start valve Start performed, the signal confirmation from the switch means, in which each and performing remotely.

[0010] A second invention is a watering system for watering a fire prevention target, comprising: a pressurized water supply source;
A main pipe connected to a pressurized water supply source to supply pressurized water,
It comprises a plurality of branch pipes branched from the main pipe for each predetermined section, a water discharge section connected to each of the branch pipes to spray pressurized water to the corresponding section, and an automatic valve provided for each of the branch pipes. The automatic valve includes a valve body that partitions the primary side and the secondary side of the main body with a partition wall, and closes a valve seat formed on the partition wall, and adjusts the pressure on the secondary side to a predetermined pressure. A pressure control function, a water control valve for closing water flowing from the secondary side to the water discharge section, a maintenance water discharge valve for discharging water separately from the branch pipe from the secondary side, a start valve for opening the valve body, and a secondary valve. A pressure sensor for detecting the pressure on the side, and a remote control device, after closing the water control valve and opening the maintenance water discharge valve,
It is characterized in that the starting valve is started, a detection signal from the pressure sensor is received, and confirmation that it is within a predetermined range is performed remotely. Further, this pressure sensor is provided in a branch pipe after the automatic valve.

Further, a third invention is a watering system for watering a fire prevention object, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply the pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The main body is divided into a primary side and a secondary side by a partition, and a valve body for closing a valve seat formed on the partition is provided, and a water control valve for closing a flow of water from the secondary side to the water discharge section is provided. The water control valve can be opened and closed remotely from a remote control device.

Still further, a fourth invention is a watering system for watering a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes for spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. A water control valve for closing the flow of water from the water to the water discharge section is provided.The water control valve is provided with a valve body for dividing the inside of the main body into a primary side and a secondary side, and is pressurized or drained for controlling the valve body. A pilot valve is disposed in a pressure path, and the water control valve can be opened and closed based on the opening and closing of the pilot valve.

Still further, a fifth invention is a watering system for watering a fire prevention object, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes for spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The water control valve is provided with a water blocking valve that closes water flowing to the water discharge section.The water control valve is provided with a valve body that partitions the inside of the main body into a primary side and a secondary side, and a limit switch that detects a control position of the valve body. It is characterized by having.

Still further, a sixth invention is a watering system for watering a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes for spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The main body is divided into a primary side and a secondary side by a partition, and a valve body for closing a valve seat formed on the partition is provided, and a maintenance water discharge valve for discharging water separately from the branch pipe from the secondary side is provided. The maintenance water discharge valve is provided with a limit switch for distinguishing the open / closed state of the maintenance water discharge valve.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. FIGS. 1 to 3 are schematic configuration diagrams showing an automatic valve of the watering system as the first embodiment. This automatic valve 60 is used in a watering system as shown in FIG.
And maintenance valve body 62 as maintenance water discharge valve and water control valve
The main body 65 has a primary side A and a secondary side B defined by a partition 64 having a valve opening 63 that can be opened and closed from both sides. FIG. 1 shows a normal state, in which the valve element 61 is closed and the maintenance valve element 62 is open. FIG. 2 shows the state of the automatic valve 60 at the time of fire (at the time of water discharge).
1 and the maintenance valve 62 are both open. Further, FIG. 3 shows a state of the automatic valve 60 at the time of the water discharge test.
The maintenance valve body 62 is closed.

The valve element 61 is connected to a cylinder device 67 that is driven to open and close.
1 and a cylinder 69 which slidably accommodates the piston 68 and forms a pressurizing chamber C which presses the piston 68. Similarly, the maintenance valve element 62 has a maintenance cylinder device 70 that is driven to open and close.
The maintenance cylinder device 70 includes a maintenance piston 71 connected to the maintenance valve body 62, and a maintenance pressurizing chamber D that houses the maintenance piston 71 slidably and presses the maintenance piston 71. And a maintenance cylinder 72 to be formed. When the maintenance valve body 62 is closed, the secondary side B is shut off via the valve opening 63 and communicates with the exhaust pressure chamber F via the hollow passage of the maintenance valve body 62. As a result, the valve body When the cylinder 61 is opened, water flows from the primary side A to the exhaust pressure chamber F.

The automatic valve 60 also pressurizes the piston 68 in the cylinder 69 to move the piston 68 to the open position, and discharges the pressure in the pressurizing chamber C of the cylinder device 67 to release the piston 68. Stop the pressurization and press the cylinder 69
Flow restricting device connected to an exhaust pressure passage 78 for moving a piston 68 in a closed position to adjust the flow according to the pressure on the secondary side B of the main body 65, and discharge while limiting the piston back pressure. The primary side A of the main body 65 is communicated with the pressurizing chamber C of the cylinder device 67 through the pressurizing flow path 73 and the flow rate restricting device 75. Since the pressure of the pressurized water on the primary side A is applied to the valve body 61, a force is normally applied in the closing direction.

Similarly, the maintenance piston 71 in the maintenance cylinder 72 is pressurized to move the maintenance valve body 62 to the closed position. A maintenance discharge pressure passage 77 for stopping the pressurization and moving the maintenance piston 71 to the open position is provided, and the maintenance cylinder device 70 is also provided with the primary side A of the main body 65 in the maintenance pressurizing chamber D of the maintenance cylinder device 70. They are communicating. The movement of the maintenance piston 71 is performed simultaneously with the closing of the valve opening 63 of the maintenance valve body 62.
The valve opening 63 communicates with the exhaust pressure chamber F through the inside of the maintenance valve body 62 so that maintenance water can be discharged. In addition, a force is constantly applied to the maintenance piston 71 in the opening direction by the pressure received from the pressurized water on the primary side A.

The automatic selection valve 66 of the automatic valve 60 is connected to an exhaust pressure passage 78 from the flow restricting device 75,
Is connected to an input pipe 79 as an exhaust pressure path, and is connected to a pressurizing chamber D of the maintenance cylinder device 70 by a maintenance input pipe 80. Its function is
When the valve element 61 is in the open position and the maintenance valve element 62 is in the open position, the flow restricting device 75 is communicated with the secondary side B of the main body 65. To the exhaust pressure chamber F. Then, the automatic selection valve 66 selects the higher pressure input from the input pipe 79 and the maintenance input pipe 80 and outputs the selected pressure to the exhaust pressure passage 78, and by opening and closing the maintenance valve body 62, the secondary side B or Since running water is generated in the exhaust pressure chamber F, the side in which the running water is generated is automatically connected to the flow restricting device 75 to prevent the flow to the side where no running water is generated.

The automatic valve 60 has a main valve limit switch 110 for detecting the opening operation of the valve element 61, a maintenance valve element limit switch 111 for detecting the closing operation of the maintenance valve element 62, and an opening of the valve element 61. Start valve 112 which is opened by remote operation to perform maintenance, maintenance start valve 113 which is opened by remote operation to close maintenance valve body 62, and automatic valve 6.
A running water detection pressure switch 114 for detecting a pressure rise on the secondary side B due to the opening of 0, a pressure regulation monitoring pressure switch 116 for monitoring the pressure regulating function of the automatic valve 60, and unnecessary for the automatic valve 60 on and after the secondary side B. Automatic drain valve 115 for draining clean water, and a needle valve 2 provided in a connection pipe 74 between the pressurizing chamber C and the flow rate limiting device 75 for adjusting the opening time of the valve body 61.
And 6.

FIG. 4 is a flowchart showing the state of the automatic valve 60 of such a watering system from normal time to fire and recovery. In normal times, the automatic valve 60 is in the state of FIG. 1, the valve element 61 is fully closed, the main valve limit switch 110 is on, the maintenance valve element 62 is fully open, the maintenance valve limit switch 111 is off, and the automatic drain valve 115 Is open, the secondary side B and the secondary side branch pipe 5b are pressureless, and the pressure switch 1
14, 116 are off.

When a fire occurs, the starting valve 112 is opened (remotely started) by a signal input from a remote control device (not shown), the pressurizing chamber C (main valve piston chamber) is pressurized, and the valve body 61 is opened. The state shown in FIG. At this time, the valve limit switch 110 is turned off, and its signal is confirmed by a remote control device (not shown). When the signal is kept on, it is determined that there is an abnormality, and a predetermined alarm, display, etc. are performed. This valve 6
1, the flow of water is started, the secondary side B is pressurized, and the flowing water detection pressure switch 114 is
Turns on. This flowing water is supplied from the secondary side B to the input pipe 79.
The regulated pressurized water adjusted by the flow restricting device 75 through the automatic selection valve 66 flows out to the branch pipe 5b, and is sprayed from the water discharge head 7. This pressure-regulated state corresponds to the pressure monitoring pressure switch 11 arranged in the branch pipe 5b.
Confirmed by 6. As the pressure switch 116, a switch that operates in a pressure range in which an upper limit and a lower limit are combined is used, and monitoring can be performed by including the pressure to be adjusted in this range. These pressure switches 114, 11
If both of the ON signals cannot be obtained by a remote control device (not shown), it is determined that there is an abnormality, and a predetermined alarm, display, or the like is performed.
Note that the same applies to a combination of two pressure switches. By this pressure regulation, at the same time as the pressure resistance of the plumbing equipment and the like, excessive water spray prevention and uniform water spray in a predetermined range are realized. At this time, the automatic drain valve 115
Is closed by the pressure received from the pressurized water on the secondary side B.

In order to extinguish the fire by this water sprinkling and to restore it, the starting valve 112 is closed by a signal input from a remote control device (not shown), the pressure in the pressurizing chamber C is gradually reduced, and the valve body 61 is closed. It returns to the state of FIG.
At this time, the pressure switches 114 and 116 are both turned off, and the valve limit switch 110 is turned on, and it is confirmed by a remote control device (not shown) that the valve has been restored. A predetermined alarm, display, and the like are performed as an abnormality of. In addition, the automatic drain valve 11
5 is opened to discharge the residual water in the secondary side branch pipe 5b and the secondary side B.

As described above, the automatic valve 60 is monitored and controlled by the remote control device (not shown) via the signal line, and when it is determined that the automatic valve 60 is abnormal, the processing corresponding to the state is performed.
Various operations such as sound, display, and notification are combined.

Next, FIGS. 5 and 6 are flow charts showing a state of a water discharge test in which water is not discharged from the head 7 of the automatic valve 60 and a state of restoration thereof. Figure 4 during normal times
Is the same as

In the operation of the water discharge test, first, in order to close the maintenance valve body 62, the maintenance start valve 113 is opened by a signal input from a remote control device (not shown), and the maintenance pressurizing chamber D is pressurized to maintain the maintenance pressurizing chamber D. The valve body 62 is closed. At this time, the maintenance valve limit switch 111 is turned on, and its signal is confirmed by a remote control device (not shown). If the signal is kept off, it is determined that there is an abnormality, and a predetermined alarm, display, and the like are performed. Then, as in the case of a fire, the starting valve 112 is opened, and the valve body 61 is opened to be in the state of FIG. At this time, the valve limit switch 110 is turned off, and the signal is confirmed by a remote control device (not shown). When the signal is kept on, it is determined that there is an abnormality, and a predetermined alarm, display, and the like are performed. By opening the valve body 61, drainage from the exhaust pressure chamber F through the inside of the maintenance valve body 62 is performed, and the secondary side B is not pressurized and the flowing water detection pressure switch 11 is connected via the maintenance input pipe 80.
4 turns on. This flowing water is also adjusted by the flow restricting device 75 through the maintenance input pipe 80, and the regulated pressurized water flows out to the exhaust pressure chamber F and does not flow to the secondary side B, so that it is not sprayed from the water discharge head 7. . Therefore, the pressure regulation monitoring pressure switch 116 arranged in the branch pipe 5b does not operate, and when a signal is obtained from the pressure switch 116, it is necessary to urgently close the valve body 61. If the signals from the pressure switches 114 and 116 are inadequate, it is determined that there is an abnormality, and a predetermined alarm, display, etc. are performed, as in the case of a fire. At this time, since the automatic drain valve 115 does not flow water to the secondary side B, it remains open.

In order to restore the operation after confirming the operation of the water discharge test, the valve 61 is first closed as in the case of a fire.
2, the pressure chamber C is gradually reduced in pressure, and the valve body 61 returns to the closed state. At this time, the pressure switch 114
Returns to off, the main valve limit switch 110 turns on,
When such signals cannot be obtained, a predetermined alarm, display, or the like is performed as a function abnormality. And the maintenance valve body 113
To restore the maintenance, the maintenance start valve 113 is closed,
If the pressure in the maintenance pressurizing chamber D is gradually reduced and the maintenance valve body 62 is opened, and the remote control device (not shown) confirms that the maintenance valve limit switch 111 is off, the water discharge test is completed.

As described above, the water discharge function of the automatic valve 60 is confirmed through the signal line by the water discharge test of the remote control device (not shown), and when it is determined that the water discharge function is abnormal, the processing corresponding to the state is performed. And various operations such as display and notification are combined.

FIG. 7 is a schematic structural view of an automatic valve of a watering system according to a second embodiment. The automatic valve of the first embodiment has a valve opening 63 from the opposite side of the valve element 61. While two valve structures are provided in the main body 65 which is closed by the maintenance valve body 62, the automatic valve of the second embodiment is similar to the conventional automatic valve 10 shown in FIG. With a valve structure, the above water discharge test can be performed remotely.
The same members as those in the first embodiment or the related art are denoted by the same reference numerals, and the functions are the same.

The automatic valve 160 according to the second embodiment is different from the automatic valve 10 shown in FIG. 13 in comparison with the automatic valve 10 shown in FIG. The structure is such that a butterfly valve (not shown) is closed by being rotated by an electric motor, and can be opened and closed by a remote control device (not shown). further,
A control valve limit switch 118 for detecting the open state of the electric control valve 117 based on the position of the motor or the like is provided. Similarly, an electric water discharge valve 119 is disposed instead of the maintenance water discharge valve 32, and the electric water discharge valve 119 is provided with an electric control valve 117.
And a water discharge valve limit switch 120 for detecting the open state thereof is provided. The flowing water detection pressure switch 114 and the pressure regulation monitoring pressure switch 1
Reference numeral 16 is as in the first embodiment.

FIG. 8 is a flowchart showing a state of the automatic valve 160 of the watering system according to the second embodiment from a normal state to a fire state and a recovery state. Under normal conditions, the automatic valve 160 is in the state shown in FIG.
Is fully closed, the main valve limit switch 110 is on, the electric control valve 117 is fully open, the control valve limit switch 118 is off, the electric water discharge valve 119 is fully closed, the water discharge valve limit switch 120 is off, and the automatic drain valve 31 is open. , The secondary side B and the secondary side branch pipe 5b have no pressure, and the pressure switches 114, 116
Is off. As in the first embodiment, various signals are input and output from a remote control device (not shown), and similar alarms and displays are performed when it is determined that there is an abnormality.

When a fire occurs, the remote start valve 20 is opened by a signal input from a remote control device (not shown), and the valve body 15 is opened. At this time, this valve limit switch 1
10 turns off. When the valve 15 is opened, the flowing water is started, and the flowing water detection pressure switch 114 is turned on.
In this flowing water, pressurized water regulated by the pressure regulating valve 27 flows out to the branch pipe 5b, and is sprayed from the water discharge head 7. This adjusted pressure state is confirmed by a pressure adjustment monitoring pressure switch 116 arranged in the branch pipe 5b. Also,
At this time, the automatic drain valve 31 is closed by receiving pressure from the pressure water on the secondary side B.

Then, in order to recover, the remote start valve 20 is closed by a signal input from a remote control device (not shown), and the valve body 15 is closed. At this time, it can be confirmed that both the pressure switches 114 and 116 are turned off, and the valve limit switch 110 is turned on and restored. In addition, the automatic drain valve 31 is opened, and the secondary side branch pipe 5 is opened.
b and the residual water in the secondary side B is discharged.

As described above, the automatic valve 160 is also monitored and controlled via a signal line by a remote control device (not shown), and when an abnormality is determined, a process corresponding to the state is performed. Various operations such as notification are combined.

Next, FIGS. 9 and 10 are flow charts showing a state during a water discharge test in which water is not discharged from the head 7 of the automatic valve 160 and a state at the time of restoration.

In the operation of the water discharge test, the electric control valve 117 is first closed by a signal input from a remote control device (not shown) so that the pressurized water does not flow out to the secondary branch pipe 5b. At this time, the control valve limit switch 118 is turned on, and its signal is confirmed by a remote control device (not shown). When the signal is kept off, it is determined that there is an abnormality, and a predetermined alarm, display, or the like is performed. At the same time, the electric water discharge valve 119 is opened by a signal input from a remote control device (not shown). At this time, the water discharge valve limit switch 120 is turned on, and the signal is confirmed by a remote control device (not shown).
Display etc. are performed. After the closing of the electric control valve 117 and the opening of the electric water discharge valve 119, the remote start valve 20 is opened and the valve body 15 is opened as in the case of a fire. At this time, the valve limit switch 110 is turned off, and the signal is confirmed by a remote control device (not shown). When the signal is kept on, it is determined that there is an abnormality, and a predetermined alarm, display, and the like are performed. By opening the valve body 15, no water flows to the secondary branch pipe 5 b, but drainage is performed from the secondary side B via the electric water discharge valve 119, and the flowing water detection pressure switch 1
14 turns on. Further, the pressure control monitoring pressure switch 116 disposed in the branch pipe 5b does not operate because no water is generated, and when a signal is obtained from the pressure switch 116, it is necessary to urgently close the valve body 15. If the signals from the pressure switches 114 and 116 are inadequate, it is determined that there is an abnormality, and a predetermined alarm, display, etc. are performed, as in the case of a fire. At this time, the automatic drain valve 31 is pressurized by the flowing water on the secondary side B and is closed.

In order to restore the operation after confirming the operation of the water discharge test, the valve 15 is first closed as in the case of a fire, so that the remote start valve 20 is closed by a signal input from a remote control device (not shown), 34 is gradually depressurized and the valve body 1
5 returns to the closed state. At this time, pressure switch 1
When 14 returns to off and the main valve limit switch 110 is turned on and these signals cannot be obtained, a predetermined alarm, display or the like is performed as a function abnormality. And the electric control valve 1
The water discharge test is terminated when the opening of the water discharge valve 17 and the closing of the electric water discharge valve 119 are carried out and the control valve limit switch 118 and the water discharge valve limit switch 120 are turned off by a remote control device (not shown).

As described above, the water discharge function of the automatic valve 160 is confirmed through the signal line by the water discharge test of the remote control device (not shown), and when it is determined that the water discharge function is abnormal, the processing corresponding to the state is performed. And various operations such as display and notification are combined.

In each of these embodiments, the automatic valve 6
The ability to remotely perform a water discharge test on 0, 160
First, the maintenance valve body 62 is closed or the electric control valve 11 is closed.
7 and the opening of the electric water discharge valve 119, the completion of the operation is taken out as a signal.
2. Opening of the remote start valve 20 can be started, and erroneous water discharge from the water discharge head 7 can be prevented. Next, a pressure regulation monitoring pressure switch 116 is connected to the secondary branch pipe 5b.
Is provided, the pressure regulating function of the automatic valves 60 and 160 can be confirmed. If this pressure regulation monitoring pressure switch 116 is to function also in the water discharge test, it may be used also as the flowing water detection pressure switch 114. However, since the pressure of the secondary side B is transmitted, it is preferable to arrange the secondary side branch pipe 5b with accuracy. Further, the provision of the flowing water detection pressure switch 114 allows the occurrence of flowing water to be confirmed at an early stage after the valve bodies 15 and 61 are opened, and the operation to immediately close the valve bodies 15 and 61 can be performed. Similarly, the pressure drop of the flowing water can be confirmed from the signal of the flowing water detection pressure switch 114, and the maintenance valve body 62 can be opened, or the electric control valve 117 can be opened and the electric discharge valve 119 can be closed early. Further, in a remote control device (not shown), the timing for activating each part can be measured.
If the maintenance valve body 62 or the electric control valve 117 is opened immediately after the closing of the cylinders 5 and 61, the residual water may be discharged from the secondary side B through the water discharge head 7, etc. It is possible to freely set the timing of the delay until the activation of the release. Finally, the ability to perform a water discharge test by remote control means that there is no need for an operator to go around the site and operate multiple automatic valves, and because the status of the automatic valves is monitored, there is no artificial control of each valve. Even if there is no forgetting to open or close, and there is a problem, an alarm, a display, and the like are performed in a remote control device (not shown).

Here, the present valve limit switch 110 detects the open state of the valve body 61. This opening may be shared by the flowing water detecting pressure switch 114, and basically both are operated at the same timing. Will do.

Next, FIG. 11 shows a schematic configuration diagram of an automatic valve of a watering system as a third embodiment. The automatic valve 161 of this embodiment is the same as the automatic valve 1 of the second embodiment.
The motorized control valve 117 is integrated with the main body 14, and the other members and functions are the same as those of the above embodiments with the same reference numerals. Only the features of the configuration will be described.

The automatic valve 161 is constructed such that the inside of the main body 14 is
A second partition 123 is further provided on the secondary side B separated by 3.
The second partition 123 is provided with a second valve seat 124. The control valve element 125 that seals the second valve seat 124 is the second valve seat 1
24 are disposed opposite to each other. This control valve element 125
The valve body 15 has a control cylinder 127 having a control piston 126 connected to a control valve body 125 inside, like the valve body 15. From the primary side of the automatic valve 161, the control pressurizing chamber 12 disposed in the control cylinder 127 via the control activation valve 130 and the flow control orifice 129.
8 is connected. Further, since the control pressurizing chamber 128 is connected to the drain passage 35 via the orifice 131 having a smaller flow rate, pressure is applied to the control pressurizing chamber 128 when the control start valve 130 is opened, and when the control start valve 130 is closed. The pressure in the control pressurizing chamber 128 is discharged.

Then, when the control start valve 130 is opened, the primary pressure is introduced into the control pressurizing chamber 128 of the control cylinder 127 and pushes the control piston 126 to move the control valve body 125 to the second position.
A closing operation can be performed on the valve seat. When the control activation valve 130 is closed, the pressure in the control pressurizing chamber 128 is exhausted to the exhaust pressure passage 35, and the valve body 125 is opened. As described above, at the time of the remote water discharge test operation in the second embodiment, the control valve body 125 can be opened and closed.

The fact that such a control valve element 125 can be opened and closed remotely can be realized by the electric control valve 117 of the second embodiment.
This is necessary when performing a water discharge test or the like remotely as in the case of the above. Further, in the third embodiment, since the closing of the second valve seat 124 by the control valve element 125 is performed using the primary pressure of the main body 14, the solenoid valve acts as a pilot valve with respect to the flow path. By providing the control start valve 130 using a motor or a motor-operated valve, the electrical operation width can be reduced.

Further, in the third embodiment, a so-called lift type valve structure is used for the structure of the integrated control valve. , A gate valve type, and the like. For a butterfly type, a valve body or a segment valve type combining a half moon, generating a closing operation and a closing force by using flowing water on the secondary side B in the main body 14. It is only necessary to use an electric part that can suppress the movement of the valve element with a simple rod or the like. Also, when using a ball valve type (rotating operation) or a gate valve type (horizontal moving operation), even if the closing operation is performed with a not so strong force, a stable operation can be performed without generating reaction force due to flowing water. Can be. In any of these types, the electric control valve 11 of the second embodiment is used.
The water discharge test can be performed by a remote control device (not shown), and the open / close position of the valve body can be detected by the limit switch 118 and the status can be monitored by the remote control device.

Based on the above embodiments, the first invention is a watering system for watering a fire prevention target, comprising a pressurized water supply source and a pressurized water supply source connected to the pressurized water supply source. A main pipe 4 to be supplied, a plurality of branch pipes branched from the main pipe for each predetermined section, a water discharge section connected to each of the branch pipes to spray pressurized water to the corresponding section, and a branch pipe provided in each of the branch pipes. The automatic valve comprises a valve body that separates a primary side and a secondary side of the main body with a partition wall and closes a valve seat formed in the partition wall, and discharges water from the secondary side. A water control valve that closes water flowing to the section, a maintenance water discharge valve that discharges water separately from the branch pipe from the secondary side, a start valve that opens the valve body, and switch means that detects movement of the valve body. The remote control closes the water valve and releases After the valve is opened, the start valve is started and the signal from the switch means is checked remotely, so that there is no need for the worker to go around the site and operate a plurality of automatic valves. Since the status of the valves is monitored, artificial opening and closing of each valve does not occur. Even if there is a problem, an alarm, a display, and the like are performed in a remote control device (not shown).

Further, a second invention is a watering system for watering a fire prevention object, comprising: a pressurized water supply source;
A main pipe connected to a pressurized water supply source to supply pressurized water,
It comprises a plurality of branch pipes branched from the main pipe for each predetermined section, a water discharge section connected to each of the branch pipes to spray pressurized water to the corresponding section, and an automatic valve provided for each of the branch pipes. The automatic valve includes a valve body that partitions the primary side and the secondary side of the main body with a partition wall, and closes a valve seat formed on the partition wall, and adjusts the pressure on the secondary side to a predetermined pressure. A pressure control function, a water control valve for closing water flowing from the secondary side to the water discharge section, a maintenance water discharge valve for discharging water separately from the branch pipe from the secondary side, a start valve for opening the valve body, and a secondary valve. A pressure sensor for detecting the pressure on the side, and a remote control device, after closing the water control valve and opening the maintenance water discharge valve,
The starting valve is started, and the detection signal from the pressure sensor is received, and confirmation that the starting valve is within a predetermined range can be remotely performed.

Further, a third aspect of the present invention is a watering system for watering a fire prevention object, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The main body is divided into a primary side and a secondary side by a partition, and a valve body for closing a valve seat formed on the partition is provided, and a water control valve for closing a flow of water from the secondary side to the water discharge section is provided. In addition, the water control valve can be remotely opened and closed from a remote control device, and can easily be forgotten to be opened at the time of inspection, and the opening operation can be performed collectively.

Still further, the fourth invention is a watering system for watering a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes for spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The water control valve is provided with a water blocking valve that closes the water from the water discharge section to the water discharge section. In addition, a pilot valve is arranged in a path for pressurizing or discharging the pressurizing chamber of the valve body, and the water control valve can be opened and closed based on the opening and closing of the pilot valve. Since a pilot valve with a motorized valve is provided, The drive can be performed in a small size.

Still further, the fifth invention is a watering system for watering a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes for spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The water control valve is provided with a water blocking valve that closes water flowing to the water discharge section.The water control valve is provided with a valve body that partitions the inside of the main body into a primary side and a secondary side, and a limit switch that detects a control position of the valve body. Because it is equipped, it is possible to remotely monitor the opening and closing of the valve element, and when remotely controlled, it becomes a confirmation of the control result for activation,
Further, even if manually controlled, it is possible to detect a human error that has been forgotten to open.

Still further, the sixth invention is a watering system for watering a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source for supplying pressurized water; A plurality of branch pipes branched from the main pipe, a water discharge section connected to each of the branch pipes for spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes. The main body is divided into a primary side and a secondary side by a partition, and a valve body for closing a valve seat formed on the partition is provided, and a maintenance water discharge valve for discharging water separately from the branch pipe from the secondary side is provided. Since the maintenance water discharge valve is equipped with a limit switch that distinguishes the open / closed state of the valve, it is possible to monitor the opening and closing of the valve body remotely. Ma , It is possible to detect the human error of forgetting to open be controlled manually.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an automatic valve according to a first embodiment of the present invention.

FIG. 2 is a schematic sectional view showing the automatic valve of FIG. 1 at the time of water discharge.

FIG. 3 is a schematic sectional view showing the automatic valve of FIG. 1 during a test.

FIG. 4 is a flowchart showing the operation of the automatic valve of FIG. 1 in the event of a fire.

FIG. 5 is a flowchart showing the operation of the automatic valve of FIG. 1 during a test.

FIG. 6 is a flowchart following FIG. 5;

FIG. 7 is a schematic sectional view showing an automatic valve according to a second embodiment of the present invention.

FIG. 8 is a flowchart showing the operation of the automatic valve of FIG. 7 at the time of fire.

FIG. 9 is a flowchart showing the operation of the automatic valve shown in FIG. 7 during a test.

FIG. 10 is a flowchart following FIG. 9;

FIG. 11 is a schematic sectional view showing an automatic valve according to a third embodiment of the present invention.

FIG. 12 is a schematic system diagram showing a conventional watering system.

FIG. 13 is a schematic sectional view showing an automatic valve showing a conventional watering system.

[Explanation of symbols]

 13, 64 Partition wall 15, 61 Valve element 20, 112 Start valve 60, 160, 161 Automatic valve 62 Maintenance valve element 110 Main valve limit switch 111 Maintenance valve limit switch 114 Flowing water detection pressure switch 116 Pressure regulation monitoring pressure switch 117 Electric control valve 118 Control valve limit switch 119 Electric discharge valve 120 Water discharge valve limit switch 123 Second partition 124 Second valve seat 125 Control valve element 126 Control piston 128 Control pressurization chamber 130 Control start valve

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // B05B 12/00 B05B 12/00 Z F16K 31/122 F16K 31/122

Claims (8)

[Claims] 1. A water spray system for spraying water toward a fire prevention object, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply pressurized water; A plurality of branched branch pipes, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes, the automatic valve comprising: The main body is provided with a valve body that partitions a primary side and a secondary side with a partition wall and closes a valve seat formed on the partition wall, and a water control for closing a flow of water from the secondary side to the water discharge section. A valve, a maintenance water discharge valve for discharging water separately from the branch pipe from the secondary side, a start-up valve for opening the valve element, and switch means for detecting movement of the valve element, a remote control device comprising: , Closing the water control valve and discharging the maintenance A watering system, wherein after the valve is opened, the activation valve is activated, and the signal from the switch means is remotely confirmed. 2. The automatic valve has a pressure regulating function,
A pressure sensor for detecting the pressure on the secondary side is provided, and the remote control device starts the start valve after closing the water control valve and opening the maintenance water discharge valve, and outputs a detection signal from the pressure sensor. The watering system according to claim 1, wherein the reception and the confirmation of being within a predetermined range are respectively performed remotely. 3. A water spray system for spraying water toward a fire prevention object, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply pressurized water; A plurality of branched branch pipes, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes, the automatic valve comprising: A pressure regulating function that partitions the primary side and the secondary side of the main body by a partition wall and includes a valve body that closes a valve seat formed on the partition wall, and adjusts the pressure of the secondary side to a predetermined pressure. A water control valve that closes water flowing from the secondary side to the water discharge section, a maintenance water discharge valve that discharges water separately from the branch pipe from the secondary side, a start-up valve that opens the valve body, And a pressure sensor for detecting the pressure on the secondary side. After the closing of the water control valve and the opening of the maintenance water discharge valve, the separation control device starts the start valve, receives a detection signal from the pressure sensor, and confirms that it is within a predetermined range. A watering system characterized by being performed remotely. 4. The watering system according to claim 2, wherein the pressure sensor is provided in a branch pipe after the automatic valve. 5. A water sprinkling system for sprinkling water toward a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply pressurized water; A plurality of branched branch pipes, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes, the automatic valve comprising: The main body is provided with a valve body that partitions a primary side and a secondary side with a partition wall and closes a valve seat formed on the partition wall, and a water control for closing a flow of water from the secondary side to the water discharge section. A sprinkling system comprising a valve, wherein the water control valve can be opened and closed remotely from a remote control device. 6. A sprinkling system for sprinkling water toward a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply pressurized water; A plurality of branched branch pipes, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes, A water control valve for closing water flowing to the water discharge section is provided. The water control valve includes a valve element that partitions the inside of the main body into a primary side and a secondary side, and is pressurized or drained for controlling the valve element. A watering system, wherein a pilot valve is disposed in a pressure path and the water control valve can be opened and closed based on opening and closing of the pilot valve. 7. A spraying system for spraying water toward a fire prevention target, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply pressurized water; A plurality of branched branch pipes, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes, A water control valve for closing water flowing to the water discharge section; the water control valve includes a valve element that partitions the inside of the main body into a primary side and a secondary side; and a limit switch that detects a control position of the valve element. A watering system comprising: 8. A sprinkling system for sprinkling water toward a fire prevention object, comprising: a pressurized water supply source; a main pipe connected to the pressurized water supply source to supply pressurized water; A plurality of branched branch pipes, a water discharge section connected to each of the branch pipes and spraying pressurized water to the corresponding section, and an automatic valve provided in each of the branch pipes, the automatic valve comprising: A maintenance water discharge valve that separates the primary side and the secondary side of the main body by a partition wall and closes a valve seat formed on the partition wall, and that discharges water separately from the branch pipe from the secondary side. And a maintenance switch, wherein the maintenance water discharge valve includes a limit switch for distinguishing an open / closed state of the maintenance water discharge valve.