JP5254886B2 - Fire hydrant equipment - Google Patents

Description

The present invention relates to a fire hydrant apparatus that mixes a foam-extinguishing stock solution in a storage tank with fire-suppressed water supplied under pressure to discharge the fire-extinguishing foam from a foam nozzle with a hose to extinguish the fire.

  Conventionally, as a fire hydrant device intended for extinguishing oil fires, a storage tank containing foam extinguishing stock solution is built in the housing, and the foam extinguishing stock solution in the storage tank is mixed with the fire extinguishing water supplied under pressure when water is sprayed. There is known a fire hydrant device that discharges a fire-fighting bubble from a nozzle attached.

In such a fire hydrant device that discharges a fire-fighting bubble, a fire-fighting bubble is actually discharged at the time of inspection, and whether or not a predetermined bubble-extinguishing is radiated is measured to measure the amount of radiation.

JP 2005-218474 A

However, in such a conventional fire hydrant device that emits fire extinguishing foam, since the fire extinguishing foam is actually radiated and inspected, the fire extinguishing foam that has been released is appropriate when considering the environment. It must be discarded and cannot simply be discarded. Moreover, it is necessary to replenish the foam extinguishing stock solution after the inspection.
In consideration of the complexity of such work, in order to prevent mixing of the foam extinguishing stock solution, the stock solution on-off valve (manual on-off valve) provided between the storage tank and the mixer is closed, and only the fire-extinguishing water is discharged. It is conceivable to check the operation by opening the stock solution on-off valve and returning the storage tank and mixer to the communication state. However, with this inspection method, there is a risk that the stock valve on-off valve may be forgotten to return to the closed state at the end of the inspection, and there is no risk of fire extinguishing bubbles occurring during the actual fire extinguishing work. It is done.

It is an object of the present invention to provide a fire hydrant device that can easily confirm from the outside that the state of the device is in a changed state different from the correct state by inspection or the like, and can always maintain the correct state of the device. .

The present invention, in a housing with a fire hydrant door,
A storage tank for storing the foam extinguishing stock solution;
A water supply pipe with an on-off valve for supplying pressurized fire-extinguishing water;
A foam nozzle connected to the water supply pipe via a hose;
A mixer that is provided in the water supply pipe, mixes the foam fire extinguishing concentrate in the storage tank with running water when the on-off valve is opened, and discharges the fire extinguishing foam from the foam nozzle;
A stock solution on-off valve provided in a stock solution supply pipe from the storage tank to the mixer,
In a fire hydrant device with an indicator lamp that displays the installation location on the front side of the housing,
A valve opening / closing detection unit for detecting opening / closing of the stock solution opening / closing valve;
A fire hydrant circuit that turns on an indicator lamp when the open / close detection unit detects the opening of the stock solution on / off valve, and turns off or flashes the indicator light when detecting the closing of the stock solution on / off valve;
Is provided.

Here, the storage tank contains the foam extinguishing stock solution in one tank separated by a diaphragm, and a branched water supply pipe is connected to the other water tank from the primary water supply pipe of the mixer via a pressure on-off valve The pressure fire extinguishing water is introduced, and the foam extinguishing stock solution stored through the diaphragm is pressurized and supplied to the mixer.
Furthermore, a second valve opening / closing detection unit for detecting opening / closing of the pressurization opening / closing valve is provided,
The fire hydrant circuit turns on the indicator lamp when determining whether the stock opening / closing unopened valve is detected by the valve opening / closing detector and when the second valve opening / closing detector detects the opening of the pressurized on / off valve, and at least one of the non-detections is detected. When the determination is made, the indicator lamp may be turned off or blinked.

The fire hydrant device of the present invention further includes a fire hydrant door opening / closing detection unit for detecting opening / closing of the hydrant door,
The fire hydrant circuit turns on the indicator lamp when both the open / close detection of the concentrate valve by the valve open / close detection unit and the close detection of the fire hydrant door by the fire hydrant door open / close unit are determined, and when at least one non-detection is determined The indicator lamp may be turned off or blinking.

Each part state indicator lamp is provided in the vicinity of each target member monitored by each open / close detection unit, and each part state indicator lamp arranged in the vicinity of the monitoring target member that detects the state change is changed. Furthermore, the detection state of each open / close detection unit may be transmitted to the monitoring panel.

According to the present invention, when it is forgotten to return with the stock solution on / off valve closed during inspection, it is detected that the stock solution on / off valve is in a closed state, and the indicator lamp provided on the fire hydrant device is turned off or blinked. When the lamp is not lit, it is immediately known that the built-in equipment is in a changed state that is different from the normal state. Turns on and confirms that the built-in equipment is in the correct state, reliably prevents forgetting to return the stock valve on / off valve that was closed during inspection, and reliably mixes foam extinguishing stock solution and discharges fire-extinguishing foam during fire fighting Can do.

Explanatory drawing which showed embodiment of the fire hydrant apparatus by this invention from the front 1 is a front view showing the internal structure with the door side removed. The circuit diagram which showed embodiment of the fire hydrant circuit provided in the fire hydrant apparatus of FIG. The circuit diagram which showed other embodiment of the fire hydrant circuit provided in the fire hydrant apparatus of FIG.

  FIG. 1 is an explanatory view showing an embodiment of a fire hydrant device according to the present invention from the front. In FIG. 1, a fire hydrant device 10 according to the present embodiment is provided with a fire hydrant door 14 that can be opened and closed on the lower side of a box-shaped housing 12 that is open on the front surface, on a panel that constitutes an upper operation display unit 16. A transmitter 18, a red indicator lamp 20, and an acoustic hole 22 are provided, and together with these devices, a fire hydrant circuit, which will be clarified later, is configured.

  The red indicator lamp 20 is always turned on so that the installation location of the fire hydrant apparatus 10 can be seen from a distance. In the event of a fire, when the transmitter 18 is pressed and the switch button is turned on, a transmission signal is transmitted to the fire receiver in the monitoring room, and a fire alarm is issued. Accordingly, the fire hydrant device 10 is also placed behind the acoustic hole 22. An audible alarm is issued from the alarm buzzer.

  FIG. 2 is a front view showing the internal structure of FIG. 1 with the door side removed. In FIG. 2, a water supply pipe 24 is drawn into the casing 12 of the fire hydrant apparatus 10 from the upper right side. A mixer 26 is provided in the middle of the water supply pipe 24, and the left side, which is the secondary side of the mixer 26. A hose 28 is connected downward from the end of the water supply pipe. The hose 28 is suspended from a hose holder 32 so as to be able to be pulled out toward the front, and a foam nozzle 30 is attached to the tip of the hose 28 so that the hose holder 32 is detachable. Wearing.

  A foam-extinguishing stock solution storage tank 34 is installed in the lower right portion of the housing 12. The foam extinguishing stock solution storage tank 34 is provided with a diaphragm made of rubber or a synthetic resin film inside to divide the inside into two sections. The fire extinguishing foam stock solution is stored in one section and the water supply pipe 24 is installed in the other section. Pressurized fire extinguishing water is supplied by connecting the branched branch water supply pipe 36, and the foam fire extinguishing stock solution is pressurized through the diaphragm with the pressurized fire extinguishing water and pushed out from the stock solution supply pipe 40 to the mixer 26.

  A pressurization on-off valve 38 is provided in the middle of the branch water supply pipe 36 connecting the water supply pipe 24 and the foam-extinguishing stock solution storage tank 34. Further, a stock solution opening / closing valve 42 is provided in the middle of the stock solution supply pipe 40 connecting the foam-extinguishing stock solution storage tank 34 and the mixer 26. A water supply opening / closing valve 25 is provided on the primary side of the mixer 26 in the water supply pipe 24.

  Further, a pump start push button switch 44 is provided inside the housing 12, and in the event of a fire, pressing the pump start push button switch 44 starts a fire pump facility (not shown) and pressurizes the water supply pipe 24 for fire extinguishing water. Can be supplied.

  Furthermore, in the fire hydrant device 10 of the present embodiment, a valve opening / closing detection switch 46 is provided as a valve opening / closing detector for detecting the opening / closing of the stock solution opening / closing valve 42 with respect to the stock solution opening / closing valve 42 provided in the stock solution supply pipe 40. . Further, a valve opening / closing detection switch 48 functioning as a second valve opening / closing detector is provided for the pressurization opening / closing valve 38 provided in the branch water supply pipe 36. As the valve opening / closing detection switches 46 and 48, for example, limit switches are used, which are turned on when the valve is opened and turned off when the valve is closed.

  In the present embodiment, a fire hydrant door opening / closing detection switch 50 is provided inside the upper left door opening of the housing 12. For example, a limit switch is used as the fire hydrant door opening / closing detection switch 50, and the switch is turned on when the fire hydrant door is closed and turned off when the fire hydrant door is open.

  In the fire hydrant apparatus 10 according to the present embodiment having such a built-in device, in a normal monitoring state, the water supply opening / closing valve 25 provided in the water supply pipe 24 is in an open state, and the pressurization provided in the branch water supply pipe 36. The stock solution on / off valve 42 provided on the on-off valve 38 and the stock solution supply pipe 40 is also open.

  When a fire hydrant door is opened at the time of fire extinguishing due to a fire or the like, the foam nozzle 30 is removed from the hose holder 32 and the hose 25 is pulled out and the pump start pushbutton switch 44 is pressed while preparing to go to the fire extinguishing target, a fire pump (not shown) Is activated, and pressurized water for fire extinguishing is supplied to the water supply pipe 24.

  The pressurized fire extinguishing water supplied to the water supply pipe 24 passes through the branch water supply pipe 36 and is separated into one compartment partitioned by the diaphragm of the foam fire extinguishing stock solution storage tank 34 and stored in the other compartment. The stock solution is pressurized, extruded from the stock solution supply pipe 40 to the mixer 26, the foam-extinguishing stock solution is mixed in a predetermined ratio with the flowing water of the mixer 26, and fire-extinguishing bubbles are discharged from the foam-extinguishing nozzle 30 through the hose 28.

  On the other hand, when the fire hydrant apparatus 10 is inspected, the pressurization on-off valve 38 provided on the branch water supply pipe 36 and the stock solution on-off valve 42 provided on the stock solution supply pipe 40 are closed, whereby the foam fire-extinguishing stock solution storage tank 34 is closed. In a state where no foam extinguishing stock solution is discharged from the pump, the pump activation push button switch 44 is turned on to supply pressurized fire extinguishing water to the water supply pipe 24 by starting the fire extinguishing pump, and only fire extinguishing water is discharged from the foam nozzle 30. To check the operation. When the inspection is completed, the pressurization on / off valve 38 and the stock solution on / off valve 42 are also returned to their original positions where they are opened.

  FIG. 3 is a circuit diagram showing an embodiment of the fire hydrant circuit 11 provided in the fire hydrant apparatus of FIG. The fire hydrant circuit 11 of FIG. 3 is provided with three-circuit transmitter switches 18-1 to 18-3 that are turned on by pressing a switch button of the transmitter 18 shown in FIG.

  When the transmitter switch 18-2 is turned on by pressing the switch button of the transmitter 18, a current is passed between the signal line 55 and the common line 54, and the transmission signal is transmitted to the fire receiver in the monitoring room to output a fire alarm. When the fire receiver side operates, power is supplied between the signal line 53 and the common line 52, and the transmitter switch 18-1 is turned on, so that the alarm buzzer 23 is sounded and the sound output of the confirmation response is output. Let

  A pump activation push button switch 44 is connected between the signal line 56 and the common line 54. The pump start push button switch 44 is turned on when the pump start button is pressed, and a current is supplied to the signal line 56 to output a pump start signal to the pump control panel to start the operation of the fire pump.

  The red indicator lamp 20 is connected between the signal line 58 and the common line 57. In this embodiment, the valve opening / closing detection switch 46 of the stock solution opening / closing valve and the valve opening / closing of the pressure opening / closing valve are connected in series with the red indicator lamp 20. A detection switch 48 and a fire hydrant door opening / closing detection switch 50 are connected in series.

  As shown in FIG. 2, in the normal monitoring state, the pressurization on / off valve 38 and the stock solution on / off valve 42 are in an open state and the fire hydrant door is closed. And the fire hydrant door detection switch 50 is turned on, and therefore the red indicator lamp 20 is lit.

  On the other hand, when the fire hydrant door is opened at the time of inspection and the internal pressurization on / off valve 38 and the stock solution on / off valve 42 are closed, the fire hydrant door on / off detection switch 50 and the valve on / off detection switches 46 and 48 are all turned off. The indicator lamp 20 is turned off.

  When the inspection is completed, the pressurization on / off valve 38 and the stock solution on / off valve 42 in FIG. 2 are returned to the closed state and the fire hydrant door is closed. The detection switches 50 are all turned on and the red indicator lamp 20 is lit. However, in the event that one or both of the pressurization on / off valve 38 and the stock solution on / off valve 42 is forgotten to be opened, the fire hydrant door Even if is closed, either one or both of the valve open / close detection switches 46 and 48 are off, so the red indicator lamp 20 does not light up.

  Therefore, when the red indicator lamp 20 is not turned on after the inspection is completed, the user immediately notices that the pressurization on / off valve 38 and / or the stock solution on / off valve 42 has been returned to the open state. It can be confirmed that the lamp 20 is turned on to return to a normal state.

  On the other hand, the cause of the turn-off of the red indicator lamp 20 provided in the fire hydrant device 10 is that the red indicator lamp 20 is out of sphere, in addition to the valve opening / closing detection switches 46 and 48 and the fire hydrant door opening / closing detection switch 50 being turned off. In order to cut the bulb of the red indicator lamp 20, the valve open / close detection switches 46 and 48 and the fire hydrant door open / close detection switch 50 of FIG. 3 are connected in series by pressing a switch button of the transmitter 18 provided in the fire hydrant device 10. If the transmitter switch 18-3 provided in the circuit connected in parallel to the circuit is turned on, and the red indicator lamp 20 does not light up at this time, it is known that the bulb has run out, and if the bulb of the red indicator lamp 20 is replaced. Good.

  In addition to confirming that the red indicator lamp 20 is out of sphere by pressing the switch button of the transmitter 18, the valve opening / closing detection switches 46 and 48 and the hydrant door opening / closing detection switch 50 are simultaneously turned on to confirm that the ball is out of sphere. You may do it. In addition, a confirmation switch dedicated to the ball break confirmation may be provided instead of the transmitter switch 18-3.

  FIG. 4 is a circuit diagram showing another embodiment of the fire hydrant circuit provided in the fire hydrant device of FIG. In the fire hydrant circuit of FIG. 4, the valve open / close detection switch 48 provided in the pressure open / close valve 38 provided in the branch water supply pipe 36 for the foam fire extinguisher stock solution tank 34 is removed, and the valve open / close detection is performed only for the stock solution open / close valve 42. The fire hydrant circuit 11 when the switch 46 is provided is shown.

  That is, when the fire hydrant apparatus 10 of FIG. 2 is inspected, it is sufficient to close the stock solution on-off valve 42 in order to prevent the foam-extinguishing stock solution from being discharged from the foam-extinguishing stock solution storage tank 34. The valve 38 may remain open. In such an inspection operation, it is not necessary to provide the valve opening / closing detection switch 48 for the pressurization opening / closing valve 38, and it is only necessary to provide the valve opening / closing detection switch 46 for the stock solution opening / closing valve 42.

  In the fire hydrant circuit 11 of FIG. 4 corresponding to this, the valve opening / closing detection switch 46 of the concentrate opening / closing valve 42 and the fire hydrant door opening / closing detection switch path 50 are connected in series in series with the red indicator lamp 20. A circuit excluding the valve opening / closing detection switch 48 provided in the pressurization opening / closing valve 38 shown in the embodiment is used. Other points are the same as in the embodiment of FIG.

  If the fire hydrant door is closed after forgetting to return the stock solution on / off valve 42 to the open state, the red indicator lamp is turned off by turning off the valve on / off detection switch 46. Immediately know that you have forgotten to return, and return to the normal open state.

  In the above-described embodiment, it is possible to confirm whether or not the pressurization on / off valve 38 and the stock solution on / off valve 42 have been forgotten to be returned to the open state by switching the lighting state of the red indicator lamp on the fire hydrant device side. However, for example, it is a two-circuit switch of the valve open / close detection switches 46 and 48 and the fire hydrant door open / close detection switch 50 of FIG. 3, and three detection switches are connected in series to a signal line different from the signal line 58 and the valve is forgotten to be returned. Or a signal indicating the door open state may be transmitted to the fire receiver in the monitoring room for display. This also applies to the embodiment of FIG. Further, when the status is transmitted to the monitoring room, detailed information may be displayed by transmitting which device is abnormal such as the pressurization on-off valve, the stock solution on-off valve, and the fire hydrant door. The hydrant device may be provided with an acoustic member so that the presence of forgetting to return can be confirmed, and the caution notification may be performed at a volume lower than the alarm sound of the transmitter operation.

  In order to identify which monitoring target member has changed from the normal state, an indicator light is provided for each monitoring target member in the vicinity of the monitoring target member, and in addition to the representative state display of the red indicator light, the target that is not in the normal state You may make it light the indicator lamp of a member.

  Moreover, in the said embodiment, although the foam fire-extinguishing stock solution storage tank is incorporated in the fire hydrant housing | casing with the hose etc., you may arrange | position in the space different from the storage part which stores not only this but a hose.

  Moreover, in the said embodiment, although the state of a valve is displayed by switching on or off, you may make it alert | report that it is not a normal state by blinking instead of turning off.

  The present invention can also be applied to a fire hydrant installed in a building or the like or a fire hydrant installed in a tunnel.

Further, the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Fire hydrant device 11: Fire hydrant circuit 12: Housing 14: Fire hydrant door 16: Operation display unit 18: Transmitter 20: Red indicator lamp 22: Acoustic hole 23: Alarm buzzer 24: Water supply pipe 25: Water supply opening / closing valve 26: Mixing Device 28: Hose 30: Foam nozzle 32: Hose holder 34: Foam extinguishing stock solution storage tank 36: Branch water supply pipe 38: Pressurization on / off valve 40: Stock solution supply pipe 42: Stock solution on / off valve 44: Pump activation push button switches 46, 48: Valve open / close detection switch 50: Fire hydrant door open / close detection switch

Claims (5)

A storage tank for storing the foam extinguishing stock solution;
A water supply pipe with an on-off valve for supplying pressurized fire-extinguishing water;
A foam nozzle connected to the water supply pipe via a hose;
A mixer that is provided in the water supply pipe and mixes the foam-extinguishing stock solution of the storage tank with running water when the on-off valve is opened, and discharges the fire-extinguishing foam from the foam nozzle;
A stock solution on-off valve provided in a stock solution supply pipe from the storage tank to the mixer;
In a fire hydrant device with an indicator lamp that displays the installation location on the front side of the housing,
A valve opening / closing detector for detecting opening / closing of the stock solution on / off valve;
A fire hydrant circuit that turns on the indicator lamp when the valve opening / closing detector detects the opening of the concentrate opening / closing valve, and blinks or extinguishes the indicator lamp when detecting the closing of the concentrate control valve;
A fire hydrant device characterized by comprising:
In the fire hydrant device according to claim 1,
The storage tank contains a foam extinguishing stock solution in one tank separated by a diaphragm, and a branch water supply pipe is connected to the other water tank from the primary water supply pipe via a pressure on / off valve. Introducing pressurized fire extinguishing water, comprising a structure for supplying pressurized foam extinguishing stock solution stored through a diaphragm to the mixer,
Furthermore, a second valve opening / closing detection unit for detecting opening / closing of the pressurization opening / closing valve is provided,
The fire hydrant circuit lights at least one of the indicator lamp when determining whether the valve opening / closing detection unit detects the opening of the stock solution on / off valve and the second valve opening / closing detection unit detects the opening of the pressurization on / off valve. A fire hydrant device that blinks or extinguishes the indicator lamp when it is determined that one is not detected.
In the fire hydrant device according to claim 1,
Furthermore, a fire hydrant door opening and closing detection unit for detecting the opening and closing of the fire hydrant door,
The fire hydrant circuit illuminates the indicator lamp when both the opening detection of the stock solution on-off valve by the valve opening / closing detection unit and the closing detection of the fire hydrant door by the fire hydrant door opening / closing unit are determined, and at least one non-detection is detected A fire hydrant device that blinks or extinguishes the indicator lamp when determining the above.
4. The fire hydrant apparatus according to claim 1, wherein each part is provided with a state indicator lamp in the vicinity of each of the target members monitored by each of the open / close detection units, and is disposed in the vicinity of the monitored target member that has detected a state change. A fire hydrant device characterized by changing a status indicator lamp.
  The fire hydrant apparatus according to any one of claims 1 to 4, wherein the detection state of each open / close detection unit is transmitted to a monitoring panel.

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