JPH10263108A - Sprinkler fire extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprinkler fire extinguishing equipment capable of remotely controlling a control valve and/or an automatic valve. SOLUTION: This facility comprises a usually open control valve 7 provided at a feed pipe to partition a primary-side piping 9 and a secondaryside piping 2, a sprinkler head 1 attached to the front end side of the secondary-side piping 2, a flow-out detecting means 3 provided at the base end side of the secondary- side piping 2 by detecting flow-out of a fluid within the secondary-side piping 2 and outputting a stream signal, a usually closed automatic valve 5 provided at an exhaust pipe 4 connected to the secondary-side piping 2, and a control panel 23 for outputting a control valve shutting signal for shutting off the control valve 7 and an automatic valve opening signal for opening the automatic valve 5 based on an inputting operation of a switch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a sprinkler fire extinguishing system.

[0002]

2. Description of the Related Art Since a sprinkler head used in a conventional general sprinkler fire extinguishing system uses a fuse or the like that is melted by heat at the time of a fire as an operating element, once a fire occurs and fire water is jetted out of the sprinkler once, Unless the main valve of the water supply pipe was manually closed, the jet of water did not stop. Therefore, it is necessary to go to the site to close the main valve, and the main valve is not always installed in an easy-to-operate place, and the closing operation of the main valve is delayed and water loss increases. There was a problem.

[0003] In order to solve such a problem, for example, there is an invention of a sprinkler fire extinguishing system for a common house disclosed in Japanese Patent Application Laid-Open No. 4-300566. The invention disclosed in the publication is to provide a control valve consisting of a motorized valve which is always open on the primary side of a sprinkler head attached to a secondary pipe, and after the fire is extinguished, the control valve is operated by a control panel. Is closed to stop outflow of water from the sprinkler head.

A sprinkler fire extinguishing system is provided with a flowing water detecting device in the middle of a water supply pipe. In order to confirm the operation of the flowing water detecting device, the same condition as when water is discharged from a sprinkler head is used. A normally closed test valve is provided on the secondary side of the flowing water detection device in the pipe. However, since the flowing water detecting device is provided in the middle of each branch pipe, the operation of manually opening and closing the test valve is complicated. Therefore, an automatic valve which can be operated remotely from a control panel is disclosed in, for example, JP-A-4-2881.
No. 70 is disclosed. The automatic fire extinguishing equipment inspection device disclosed in the publication, when inspecting the sprink fire extinguishing equipment, opens the automatic valve by remote control from the control panel, detects the pressure at that time with a pressure sensor, for example, the control panel surface It can be confirmed with.

[0005]

However, the one disclosed in the above publication is for remotely controlling either the control valve or the automatic valve, but not for remotely controlling both of these valves. Further, in the invention disclosed in the above publication, an erroneous instruction may be issued from the control panel, and in this case, there is a risk that a serious problem may occur. That is, if the control valve is accidentally closed at a time other than the end of fire extinguishing, the control valve is left closed and fire extinguishing water is discharged when a fire occurs in this state. Risk of catastrophe. Further, if the automatic valve is opened at the time other than the time of inspection or the end of the fire, it is mistaken for a fire or wastes water.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a sprinkler fire extinguishing system capable of remotely controlling both a control valve and an automatic valve. It is another object of the present invention to provide a sprinkler fire extinguishing system in which an automatic valve and a control valve are not accidentally opened and closed.

[0007]

A sprinkler fire extinguishing system according to the present invention includes a control valve provided in a water supply pipe, which is always open to partition the water supply pipe into a primary pipe and a secondary pipe. A sprinkler head attached to the distal end of the secondary pipe, and an outflow detecting means provided at the base end of the secondary pipe for detecting the outflow of fluid in the secondary pipe and outputting a flowing water signal And an automatic valve provided in a drain pipe connected to the secondary side pipe, which is normally closed, and a control valve closing signal for closing the control valve based on an input operation and an automatic valve for opening the automatic valve. Control means for outputting a valve opening signal.

A control valve provided in the water supply pipe and dividing the water supply pipe into a primary side pipe and a secondary side pipe, which is always open; and a sprinkler head attached to a tip end side of the secondary side pipe. And is provided on the base end side of the secondary pipe,
Outflow detection means for detecting the outflow of fluid in the secondary pipe and outputting a running water signal, control means for controlling opening and closing of the control valve, and a first instruction for instructing the control means to close the control valve. When the control means receives an instruction to close the control valve from the first operation input means, confirms the presence or absence of the flowing water signal and validates the instruction when there is a flowing water signal, When there is no running water signal, the instruction is invalidated.

Further, an automatic valve provided in a drain pipe connected to the secondary pipe and normally closed, and second operation input means for instructing the control means to open the automatic valve are provided. The control means, when receiving an instruction to open the automatic valve from the second operation input means, receives the instruction to close the control valve, and validates the instruction to open the automatic valve only when the instruction is valid. In other cases, the automatic valve opening instruction is invalidated.

[0010] Furthermore, there is provided third operation input means for instructing the start of inspection, and the control means receives the inspection from the third operation input means when receiving an instruction to open the automatic valve from the second operation input means. It is determined whether or not there is a start instruction, and when the start instruction is issued, the automatic valve opening instruction is made valid.

[0011]

FIG. 1 is a system diagram of an embodiment of the present invention. In the figure, 1 is attached to the tip side of a secondary pipe 2 as a water supply pipe, a plurality of closed-type sprinkler heads installed on a ceiling surface or the like, 3 is attached to the secondary pipe 2, When the pressurized water in the side pipe 2 flows out of the sprinkler head 1, a flowing water detecting device as a flow detecting means for detecting the flow and outputting a flowing water signal, and 5 is a secondary of the flowing water detecting device 3 in the secondary piping 2. It is an automatic valve including an electric valve and a solenoid valve provided in the drain pipe 4 connected to the side. The automatic valve 5 is normally kept closed, and is opened and closed by a control signal from a control panel 23 described later. Reference numeral 7 denotes a control valve composed of an electric valve or a solenoid valve for partitioning the secondary pipe 2 and a primary pipe 9 described later.
It is opened and closed by the control signal of No. 3. The control valve 7 is normally kept open.

Reference numeral 9 denotes a primary pipe serving as a water supply pipe having one end connected to the control valve 7 and the other end connected to a water source water tank 13 via a fire pump 11. Reference numeral 15 denotes a pressure switch 19 installed in a pressure air tank 17 connected to the primary pipe 9.
This is a pump control panel that controls the activation of the fire pump 11 based on the signal of (1). Reference numeral 21 denotes a fire detector which is installed in a protection area where the sprinkler head 1 is installed and outputs a fire signal. Reference numeral 23 denotes a control panel to which a fire signal from the fire detector 21 and a running water signal from the running water detecting device 3 are input, and which controls opening and closing of the automatic valve 5 and the control valve 7, for example, installed at a disaster prevention center not shown. .

FIG. 2 is an explanatory view of a push button switch provided on the control panel 23. Reference numeral 25 denotes a water discharge stop button as first operation input means which is pressed when the user wants to stop water discharge from the sprinkler head 1 at the end of fire extinguishing. An inspection start button as a third operation input means to be pressed, and a second button 29 to be pressed when the automatic valve 5 is to be opened.
An automatic valve opening button 31 as an operation input means is an automatic valve closing button to be pressed when the automatic valve 5 is to be closed. The control panel 23 controls the opening and closing of the control valve 7 and the automatic valve 5 based on the signals from the respective pushbutton switches provided on the panel surface and the running water signal.

FIG. 3 is a processing flowchart of the control panel 23 in the present embodiment shown in FIG. 1, and shows processing when the water discharge stop button 25 is pressed. Less than,
The processing of the control panel 23 will be described based on FIG. Control panel 2
3 determines whether or not the water discharge stop button 25 has been pressed (S1). If it is determined that the water discharge stop button 25 has not been pressed, it waits until it is pressed. If it is determined in step S1 that the water discharge stop button 25 has been pressed, it is determined whether a running water signal has been input (S2). If it is determined in step S2 that a running water signal has been input, it is determined that the sprinkler head 1 is operating to discharge water, and a signal for closing the control valve 7 is output (S3). Control valve 7
Receives the valve closing signal from the control panel 23 and closes the valve completely. As a result, the fire extinguishing water from the primary pipe 9 is no longer sent to the secondary pipe 2, and water loss after fire extinguishing can be prevented.

On the other hand, if it is determined in step S2 that there is no input of a running water signal, the process in step S1 is invalidated (S4), and the process waits until the water discharge stop button 25 is pressed again. As described above, the control panel 23 is provided with the water discharge stop button 2
Since the control valve 7 is closed when the button 5 is pressed and the running water signal is input, when the sprinkler head 1 operates and the water is discharged, it is possible to reliably stop the water discharge. When the water discharge stop button 25 is pressed by mistake, the control valve 7 is not closed, and the control valve 7 is not closed in the monitoring state.

At this time, the automatic valve 5 may be opened at the same time. By doing so, water supply to the secondary pipe 2 can be stopped, and at the same time, water in the secondary pipe can be drained from the automatic valve 5, so that water loss can be further prevented. Further, when the water discharge stop button is pressed, the fire signal is controlled by checking whether or not a fire signal is being output from the fire detector 21 in addition to checking whether or not there is a flow signal from the water detection device 3. Once input to the panel 23, the control valve 7 is closed only when the input of a fire signal is stopped by pressing a recovery button (not shown), that is, only when it can be determined that the fire has been extinguished. You may do so. When an analog fire detector is used as the fire detector 21, the control valve 7 is closed only when the analog signal is reduced.

FIG. 4 is a processing flowchart of the control panel 23 shown in FIG. 1, and shows processing when the automatic valve opening button 29 is pressed. Hereinafter, processing of the control panel 23 will be described based on FIG. The control panel 23 determines whether or not the automatic valve release button 29 has been pressed (S11). If it is determined that the automatic valve release button 29 has not been pressed, the control panel 23 waits until it is pressed. If it is determined in S11 that the automatic valve opening button 29 has been pressed, it is determined whether the inspection start button 27 has been pressed (S12). If it is determined in step S12 that the check start button 27 has been pressed, a signal for opening the automatic valve 5 is output (S1).
3). When the automatic valve 5 receives the valve opening signal from the control panel 23, it opens the valve fully. As a result, the fire extinguishing water from the secondary pipe 2 flows out of the drain pipe 4 and can create a state similar to that discharged from the sprinkler head 1, and inspection such as operation confirmation of the flowing water detection device 3 can be performed. .

On the other hand, if it is determined in step S12 that the inspection start button 27 has not been pressed, it is determined whether the water discharge stop button 25 has been pressed (S14). In the determination of S14, the water discharge stop button 2
When it is determined that 5 has been pressed, it is further determined whether or not a running water signal has been input a predetermined time (for example, about 5 minutes) before the present time (S15). A signal for opening the automatic valve 5 is output (S13). When the automatic valve 5 receives the valve opening signal from the control panel 23, it opens the valve fully. The processing in this case is not at the time of inspection, but after closing the control valve 7 after a fire or the like, the fire extinguishing water in the secondary pipe 2 is drained from the drain pipe 4 to discharge water from the sprinkler head 1. This is a process for suppressing water loss by reducing the amount of water loss.

In the determination of S14, the water discharge stop button 25
If it is determined that the button has not been pressed, or if it has been determined in step S15 that a running water signal has not been input, the processing in step S11 is invalidated, and the automatic valve opening button 29 is again activated.
Wait until is pressed. That is, in this case, the automatic valve 5 is not opened even though the automatic valve opening button is pressed. As described above, the control panel 23
Even when the automatic valve opening button 29 is pressed, the automatic valve 5 is not opened unless the inspection start button 27 is pressed or the control valve 7 is closed.
Even if the automatic valve opening button 29 is pressed by mistake, it is safe.

In the above embodiment, when the water discharge stop button 25 or the automatic valve opening button 29 is pressed, the input of these buttons is made effective under certain conditions. Needless to say, even when such certain conditions are not taken into consideration, the water discharge stop button 25 and the automatic valve opening button 29 can be provided so that the control valve 7 and the automatic valve 5 can be remotely operated. .

[0021]

As described above, according to the first aspect of the present invention, the automatic valve and the control valve can be remotely operated, so that it is not necessary to go to the installation location of each valve, which is convenient.

According to the second aspect of the present invention, the first
Even if there is an operation input from the operation input unit, the control valve does not close when the running water signal is not output, and thus, for example, when the first operation input unit is erroneously pressed, the control valve is not closed. It will not be closed and the control valve will not be closed in the monitoring state, and it is safe.

Further, according to the third aspect of the present invention, even if an operation is input from the second operation input means, the automatic valve does not open unless the control valve is closed. It is safe even if you operate it by mistake.

According to the invention described in claim 4, the third aspect is provided.
When an instruction to start inspection is given from the operation input means, the automatic valve opening instruction is made effective, so remote control is possible even when performing periodic inspection of the flowing water detection device, etc.
It is convenient.

[Brief description of the drawings]

FIG. 1 is a system diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a push button switch provided on a control panel according to one embodiment of the present invention.

FIG. 3 is a processing flowchart of a control panel when a water discharge stop button is pressed according to the embodiment of the present invention.

FIG. 4 is a processing flowchart of a control panel when an automatic valve opening button is pressed according to the embodiment of the present invention.

[Description of Signs] 1 Closed sprinkler head 2 Secondary side piping 3 Running water detector 5 Automatic valve 7 Control valve 9 Primary side piping 21 Fire detector 23 Control panel 25 Water discharge stop button 27 Inspection start button 29 Automatic valve open button 31 Automatic valve closing button

Claims (4)

[Claims] 1. A control valve provided in a water supply pipe and dividing the water supply pipe into a primary side pipe and a secondary side pipe, which is always open, and a sprinkler head attached to a tip side of the secondary side pipe. An outflow detecting means provided on the base end side of the secondary pipe, detecting an outflow of fluid in the secondary pipe and outputting a flowing water signal; and a drain pipe connected to the secondary pipe And an automatic valve which is normally closed, and a control means for outputting a control valve closing signal for closing the control valve and an automatic valve opening signal for opening the automatic valve based on an input operation. Sprinkler fire extinguishing equipment. 2. A control valve provided in a water supply pipe and dividing the water supply pipe into a primary side pipe and a secondary side pipe, which is always open, and a sprinkler head attached to a tip side of the secondary side pipe. And an outflow detecting means provided on the base end side of the secondary pipe and detecting an outflow of fluid in the secondary pipe and outputting a flowing water signal; and a control means for controlling opening and closing of the control valve. A first operation input means for instructing the control means to close the control valve, wherein the control means, upon receiving an instruction to close the control valve from the first operation input means, determines whether or not the flowing water signal is present. The sprinkler fire extinguishing system is characterized in that the instruction is made valid when there is a flowing water signal and the instruction is made invalid when there is no flowing water signal. 3. An automatic valve provided in a drain pipe connected to the secondary pipe and normally closed, and a second operation input means for instructing the control means to open the automatic valve, The control means, when receiving an instruction to open the automatic valve from the second operation input means, receives the instruction to close the control valve, and validates the instruction to open the automatic valve only when the instruction is valid. The sprinkler fire extinguishing system according to claim 2, wherein the instruction to open the automatic valve is invalidated in other cases. 4. A third operation input means for instructing a start of an inspection, wherein the control means, when receiving an instruction to open an automatic valve from the second operation input means, starts an inspection from the third operation input means. 4. The sprinkler fire extinguishing system according to claim 3, wherein the presence or absence of the instruction is confirmed, and when the instruction is issued, the instruction to open the automatic valve is made valid.