JP2001000574A - Sprinkler fire extinguishing equipment - Google Patents

Abstract

(57) [Summary] (With correction) [Problem] To simplify the equipment configuration and reduce the cost by connecting sprinkler heads having different water discharge amounts to the same piping system. SOLUTION: A fire-extinguishing water is pressurized and supplied from a water supply main pipe 4 to a first water supply pipe 6A drawn out to a protection section A via a first flowing water detection device 7A to operate at a predetermined temperature due to a hot air flow of a fire. The first head 9 for sprinkling fire extinguishing water is connected.
Following the first water supply pipe 6A, the second water supply pipe 6B drawn out via the second flowing water detection device 7B is operated at a predetermined temperature due to the hot air flow of fire to sprinkle water for fire extinguishing, and the first head 9 The second head 10 having the same or higher fire extinguishing performance and a small amount of water discharged per unit time is connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler fire extinguishing system for extinguishing fire by discharging fire extinguishing water from a sprinkler head when a fire occurs.

[0002]

2. Description of the Related Art Conventionally, as this type of sprinkler fire extinguishing equipment, for example, there is one shown in FIG. In FIG. 8, a fire pump 1 and a motor 2 are installed on the basement floor of a building, etc., and the fire pump 1 is operated by driving the motor 2 by a pump control panel 15 to pump up the fire extinguishing water in a water storage tank 3 and to vertically extend the building. It is pressurized and supplied to the water supply main pipe 4 laid in the direction.

An elevated water tank 5 is installed on the roof of the building, and the main water supply 4 is always filled with fire extinguishing water. Further, the pressure inside the water supply main pipe 4 is introduced into the pressure tank 13 to compress the internal air. When the pressure inside the pipe falls below a specified pressure by the operation of the sprinkler head, the pressure switch 14 is turned on, and the pump control panel 15 To drive the fire pump 1.

A running water detecting device 7 is provided on a branch pipe 6 branched from the water supply main pipe 4, and a closed type sprinkler head 9 is connected to the secondary side thereof, so that the pressurized water is supplied from the water supply main pipe 4. . The running water detection device 7 includes a running water detection switch 8, and when the closed-type sprinkler head 9 is activated by receiving heat from a fire and discharges fire-extinguishing water, the valve opening or pressure drop due to the water flow at that time is detected. The running water detection switch 8 is turned on to output a running water detection signal.

The terminal test valve 11 provided on the terminal side of the branch pipe 6
Is used for the system test of the sprinkler fire extinguishing equipment. When the end test valve 11 is opened, the amount of water corresponding to the operation of one sprinkler head determined by the orifice 12 flows through the branch pipe 6, and the running water detection device 7 is simulated. Then, a test operation such as a pump operation can be performed.

[0006] A running water detection signal from a running water detection switch 8 provided in the running water detection device 7 is given to a sprinkler monitoring panel 16.

When the closed sprinkler head 9 is operated by receiving heat from a fire, water for fire extinguishing is discharged.
When the closed sprinkler head 9 discharges water, the fire extinguishing water flows into the branch pipe 6, the running water detection device 7 is activated, the running water detection switch 8 is turned on, and the running water detection signal is transmitted to the sprinkler monitoring panel 1
6 and an operation display is performed.

The pump control panel 15 detects that the pressure switch 14 of the pressure tank 13 is turned on, controls the start of the motor 2, operates the fire pump 1, and continuously discharges fire extinguishing water from the sprinkler head 9 that has been operated to extinguish the fire. I do.

[0009]

In such a conventional sprinkler fire extinguishing system, the amount of working water discharged to the branch pipe 6 drawn into the protection section on the secondary side of the flowing water detecting device 7 is, for example, per minute. The same closed type sprinkler head 9 of 80 liters is connected, and therefore, the running water detecting device 7 is operated by detecting the flowing water flowing when one closed type sprinkler head 9 is operated. Diameter or end test valve 11 or orifice 12
Is also determined based on the amount of water corresponding to the operation of one closed sprinkler head.

However, in recent years, sprinkler heads such as a scanning type, a large drop type, a pulse emission type and the like have been proposed as sprinkler heads for increasing the fire extinguishing ability and reducing the amount of water discharge to reduce water damage. .

The scanning sprinkler head scans a substantially band-like or spot-like spray pattern by moving it within a predetermined protection range (Japanese Patent Application Nos. 8-69730 and 8-112).
287 etc.). The large drop type sprinkler head rotates the nozzle portion at high speed by a jet of fire-extinguishing water and randomly sprays water droplets having a large particle diameter from a slit hole (Japanese Patent Application No. 8-93735). Further, the pulse emission type sprinkler head periodically repeats instantaneous concentrated emission of fire-extinguishing water (Japanese Patent Application No. 7-29042).

The scanning type, large drop type and pulse emission type sprinkler heads have the same fire extinguishing performance, for example, while the closed type sprinkler head 9 shown in FIG. This can be achieved with a small water discharge amount of 50 liters per minute. In addition, special sprinkler heads such as a scanning type, a large drop type, and a pulse emission type are generally installed in a special protection section, such as a computer room, which dislikes water damage.

However, in the conventional sprinkler fire extinguishing system, as shown in FIG. 8, the sprinkler heads 9 having the same water discharge amount are connected to the piping system of the same branch pipe 6, so that a specific protective section, for example, a protective section, For example, when an attempt is made to install a scanning sprinkler head in B, it is necessary to draw out and install a dedicated branch pipe from the water supply main pipe 4 separately from the branch pipe 6 of the closed sprinkler head 9 because the amount of discharged water is different. There was a problem that the equipment configuration became complicated and the cost increased.

The present invention has been made in view of the above problems, and has a sprinkler fire extinguishing system in which sprinkler heads having different water discharge amounts are connected to the same piping system to simplify the equipment configuration and reduce costs. The purpose is to provide.

[0015]

In order to achieve this object, the present invention is configured as follows.

The sprinkler fire extinguishing system of the present invention is connected to a first water supply pipe drawn out of a main water supply line to which fire extinguishing water is supplied under pressure through a first flowing water detection device to a protection section, and is provided with a hot air flow of fire. A first head that operates at a predetermined temperature to spray water for fire extinguishing and is connected to a second water supply pipe drawn through a second water detection device following the first water supply pipe, and is connected at a predetermined temperature by a hot air flow of a fire. It is characterized by comprising a first head and a second head having the same or higher fire-extinguishing performance and having a small amount of water discharged per unit time when activated.

As described above, the first head corresponding to a normal closed type sprinkler head and the second head having the same fire extinguishing performance and a small amount of water discharge per unit time as the normal closed type sprinkler head are provided in the same piping system. Therefore, there is no need to draw out a dedicated water supply pipe for the second head, for example, a branch pipe from the water supply main pipe, and the second head can easily and easily be installed in a special protection section, such as a computer room, which is in the same pipe system and does not like water damage. Two heads can be installed.

Here, the second running water detecting device detects running water in the second water supply pipe when the second head is operated, opens the flow path, and sends a second operating signal to the outside to perform the first running water detection. The apparatus detects flowing water when the first head is operated or flowing water in the first water supply pipe when the second flowing water detecting device opens the flow path, opens the flow path, and sends a first operation signal to the outside. I do.

Therefore, the first head and the second head are connected to the same piping system.
Even if heads are provided, it is possible to distinguish which head has been operated by using each operation signal.

In this case, the water supply pipe is provided with a test valve device for selecting and discharging the same amount as the amount of water discharged from the first head per unit time and the same amount as the amount of water discharged per unit time of the second head. Is also good.

In another form of the sprinkler fire extinguishing system according to the present invention, the fire extinguishing water is connected to a water supply pipe drawn out of a water supply main line to which a fire is supplied under pressure to a protection section, and at a predetermined temperature due to a hot air flow of the fire. The first to operate and sprinkle fire water
The second head, which is connected to the same water supply pipe as the head and operates at a predetermined temperature due to the hot air flow of the fire to spray water for fire extinguishing, and has a fire extinguishing performance equal to or higher than the first head and a small amount of water discharged per unit time. Is provided at a portion where the water supply pipe draws out from the water supply main pipe, and detects a flow of water when at least one of the first head and the second head is operated, and opens the valve to an opening corresponding to the amount of water discharged from each head. In addition to the opening, a running water detecting device for sending a first operation signal and a second operation signal to the outside according to a corresponding opening degree of each head is provided.

Also in this case, since the first head and the second head having the same fire extinguishing performance and a small amount of water discharged per unit time can be provided in the same piping system, a dedicated water supply pipe is not required for the second head. The second head can be easily and easily installed in a special protection section in the same piping system. Further, even if the first head and the second head are provided in the same piping system, it is possible to distinguish which head has operated by using each operation signal.

Also in this case, a test valve device for selecting and discharging the same amount as the amount of water discharged per unit time of the first head and the same amount as the amount of water discharged per unit time of the second head is provided in the water supply pipe. It may be provided.

In another form of the sprinkler fire extinguishing system of the present invention, the fire extinguishing water is connected to a water supply pipe drawn out from a water supply main line to which a fire is supplied under pressure to a protection section, and is controlled at a predetermined temperature by a hot air flow of the fire. The first to operate and sprinkle fire water
The second head, which is connected to the same water supply pipe as the head and operates at a predetermined temperature due to the hot air flow of the fire to spray water for fire extinguishing, and has a fire extinguishing performance equal to or higher than the first head and a small amount of water discharged per unit time. And a running water detection device provided at a drawer portion of the water supply pipe with respect to the main water supply pipe, detecting a flow of water equal to or more than the amount of water discharged from the first head, opening a valve, and sending an operation signal to the outside. It is characterized by.

In this sprinkler fire extinguishing system, the diameter of the downcomer pipe connecting the first head and the second head to the water supply main pipe is set to a value corresponding to the amount of water discharged per unit time of each of the first head and the second head. And

Also in this case, since the first head and the second head having the same fire extinguishing performance and a small amount of water discharged per unit time can be provided in the same piping system, a dedicated water supply pipe is not required for the second head. The second head can be easily and easily installed in a special protection section in the same piping system. Further, although the operation of the first head and the operation of the second head cannot be distinguished, the running water detecting device is simplified.

Also in this case, a test valve device for discharging the same amount of water as the second head discharges per unit time may be provided in the water supply pipe.

The first head of the sprinkler fire extinguishing system according to the present invention is a closed type sprinkler head that opens an internal flow passage and discharges water for fire extinguishing by dropping due to thermal decomposition when a heat-sensitive portion reaches a predetermined temperature due to a hot air flow of a fire. It is.

The second head is a scanning sprinkler head that scans a substantially band-like or spot-like spray pattern by moving it within a predetermined protection range. A large-drop type sprinkler head that randomly scatters large-diameter water droplets, and / or a pulse-radiation-type sprinkler head that periodically repeats instantaneous concentrated radiation of fire-extinguishing water.

[0030]

FIG. 1 shows a first embodiment of a sprinkler fire extinguishing system according to the present invention, in which a piping system of a first head and a piping system of a second head having different amounts of discharged water are connected via a flowing water detecting device. It is characterized by having done.

In FIG. 1, a fire extinguishing pump 1 and a motor 2 are installed on a basement floor or the like of a building, and the fire extinguishing pump 1 is operated by driving the motor 2 by a pump control panel 15 to pump up fire extinguishing water in a water storage tank 3. The water is supplied under pressure to a water supply main pipe 4 that is piped in the vertical direction of the building.

An elevated water tank 5 is installed on the roof of the building, and the main water supply 4 is always filled with fire extinguishing water. Further, the pressure inside the water supply main pipe 4 is introduced into the pressure tank 13 to compress the internal air, and when the pressure inside the pipe falls below the specified pressure by the operation of the sprinkler head, the pressure switch 14 is turned on,
The pump control panel 15 drives the motor 2 to operate the fire pump 1.

The branch pipe 6 branched from the water supply main pipe 4 includes:
A first flowing water detection device 7A is provided at the drawer portion, and a first water supply pipe 6A on the secondary side thereof is connected to the protection section A, and a closed sprinkler head having a water discharge rate of, for example, 80 liters per minute is used. The first head 9 is connected.

Following the first water supply pipe 6A, a second water supply pipe 6B is connected via a second flowing water detection device 7B, and the second water supply pipe 6B is connected to the protection section B, where the second head 10 is connected. Connected. The second head 10 is a head having a fire extinguishing performance equal to or higher than that of the first head 9 and a small water discharge amount per unit time. For example, if the water discharge amount of the first head 9 is 80 liters per minute, the second head 1
A water discharge rate of 0 can achieve the same fire extinguishing performance at, for example, 50 liters per minute.

As such a second head 10, a substantially band-like or spot-like watering pattern is formed so as to intensively spray water in a specific range within the protection range, and a substantially band-like or spot-like watering pattern within a predetermined protection range. Scanning sprinkler head (Japanese Patent Application Nos. 8-69730 and 8-112287) for moving and scanning so as not to disturb the watering pattern of the nozzle. Large drop type sprinkler head that randomly sprays large water droplets (Japanese Patent Application No. 8-937)
No. 35), a pulse-type radiation sprinkler head that periodically repeats instantaneous concentrated radiation of fire-fighting water (Japanese Patent Application No. 7-290).
No. 42), etc. can be used.

Further, a terminal test valve 11 and an orifice 12 are provided at the terminal side of the second water supply pipe 6B.

The first flowing water detecting device 7A provided on the inlet side of the first water supply pipe 6A includes a flowing water detecting switch 8A. First
The flowing water detecting device 7A is connected to the first water supply pipe 6A by the second head 1.
The valve is opened by detecting a flow rate of 50 liters / minute or more, which is a water discharge amount of 0, and the first flow detection switch 8A is turned on with the opening operation of the valve, and the sprinkler monitoring panel 16 is turned on.
Outputs the first operation signal E1.

The second flowing water detecting device 7B provided on the inlet side of the second water supply pipe 6B includes a flowing water detecting switch 8B. The second running water detecting device 7B detects running water of 50 liters per minute or more, which is the amount of water discharged from the second head 10, and opens the valve,
With the opening operation of the valve, the second running water detection switch 8B is turned on, and the operation signal E2 is output to the sprinkler monitoring panel 16.

When the second flowing water detecting device 7B is operated, 50 liters or more of water, which is the amount of water discharged from the second head 10, is generated in the first water supply pipe 6A at the same time. Operates to open the valve, thereby turning on the first flowing water detection switch 8A to turn on the operation signal E.
Outputs 1.

That is, when one of the first heads 9 installed in the protection section A is opened by receiving a hot air flow due to a fire, the first head 9 is operated to discharge the water to the first water supply pipe 6a. Upon receiving the water flow rate of 80 liters per minute, the first running water detection device 7A in which the working water flow rate is set to 50 liters or more is activated to open the valve, and when the running water detection switch 8A is turned on, the operation signal E1 is sent to the sprinkler monitoring panel 16A. Output to

On the other hand, the second unit installed in the protection section B
When one of the heads 10 is opened by receiving a hot air flow due to a fire, the second flowing water detecting device 7B detects 50 liters of flowing water per minute flowing through the second water supply pipe 6B by the operation of the second head 10. Detect and open the valve. By the operation of the second flowing water detecting device 7B, the same 50 liters of flowing water is generated in the first water supply pipe 6A, and the first flowing water detecting device 7A opens the valve following the second flowing water detecting device 7B. Become.

For this reason, the second unit installed in the protection section B
When the head 10 is opened by receiving a hot air flow caused by a fire, the second flowing water detecting device 7B and the first flowing water detecting device 7A
Are activated, and the operation signals E2 and E1 are output from the second flowing water detection switch 8B and the first flowing water detection switch 8A, respectively.

Based on the operation signals E1 and E2 from the running water detection switches 8A and 8B, the sprinkler monitor panel 16 recognizes the operation of the first head 9 of the protection section A when only the operation signal E1 is obtained. To display. When the operation signals E1 and E2 are detected, it is determined that the second head 10 of the protection section B is operating and displayed.

For an actual water discharge test using the end test valve 11 and the orifice 12 provided following the second water supply pipe 6b, the orifice 12 is used to discharge water from the second head 10 at a rate of 5 per minute.
A test water discharge of 0 liter is set.

In performing the test, when the end test valve 11 is opened, 50 liters of flowing water per minute determined by the orifice 12 is generated in the second water supply pipe 6B, and the same flowing water state as when one of the second heads 10 is operated. To produce For this reason, the second flowing water detection device 7B opens the valve and the flowing water detection switch 8
B outputs an activation signal E2.

With the operation of the second flowing water detecting device 7B, the first
The same 50 liters of flowing water is generated per minute in the water supply pipe 6A, the valve of the first flowing water detection device 7A is opened, the first flowing water detection switch 8A is turned on, and the operation signal E1 is output.

Therefore, if both the second operation signal E2 and the first operation signal E1 are received by the sprinkler monitoring panel 16 and the operation of the second head 10 in the protection section B is displayed, it means that the operation is normal. Test results can be confirmed.

In the sprinkler monitor panel 16, the operation signals E2 and E are displayed as indications during the actual water discharge test by the operation of the first head 9 or the opening of the end test valve 11.
The operation display may be performed when both of them are obtained, or an operation display lamp or the like may be separately provided for each of the operation signals E1 and E2, and the operation display may be performed separately by the operation signals E1 and E2. You may.

When the operation indicators are separately provided corresponding to the operation signals E1 and E2, for example, when the second head 10 is operated, the operation indicator is first turned on by receiving the operation signal E2, and then the second head 10 is operated. Since the operation indicator light is turned on by receiving the operation signal E1, it can be recognized that the second flowing water detecting device 7B and the first flowing water detecting device 7A are operating in this order.

Thus, if, for example, only the operation indicator lamp corresponding to the second operation signal E2 is turned on even after the terminal test, it can be recognized that the first flowing water detecting device 7A has a fault.

FIG. 2 shows a second embodiment of the sprinkler fire extinguishing system according to the present invention. In this embodiment,
A first head and a second head having different water discharge amounts are arranged in the same piping system in a mixed manner, and the operation of each head can be distinguished.

In FIG. 2, the configuration of the equipment around the fire extinguishing pump 1 of the sprinkler fire extinguishing equipment is the same as that of the embodiment of FIG. The branch pipe 6 drawn out from the water supply main pipe 4 is provided with an actuated valve type running water detecting device 17 at a drawer portion, and the branch pipe on the secondary side is connected to the protection sections A and B. 6 is connected to a first head 9 having a water discharge rate of 80 liters per minute. The branch pipe 6 of the protection section B has a water discharge rate of 50 liters which is smaller than the first head 9 and can exhibit the same fire extinguishing performance. The head 10 is connected.

The first end test valve 11 is provided at the end of the branch pipe 6.
A, a second end test valve 11B and an orifice 12 are provided.

The opening degree of the built-in operating valve of the operating valve type running water detecting device 17 changes according to the amount of flowing water passing through the device.
For example, assuming that the opening degree of the valve when the second head 10 with a water discharge rate of 50 liters per minute operates is θ2, the valve opening when the first head 9 with a water discharge rate of 80 liters per minute is higher than that. The degree is an opening degree θ1 that is larger than the opening degree θ2 at 50 liters.

In response to the opening degree of the valve, the second running water detection switch 18B which is turned on at the valve opening degree θ2 by the operation of the second head 10 and the valve opening degree θ by the operation of the first head 9
A first running water detection switch 18A that is turned on at 1 is provided.

However, the valve opening θ due to the operation of the first head 9
Θ1 between the valve opening θ2 due to the operation of the first head 10 and the second head 10
> Θ2, only the second flowing water detection switch 18B is turned on at the valve opening θ2 when the second head 10 operates, but the valve opening θ1 when the first head 9 operates.
In this case, both the first running water detection switch 18A and the second running water detection switch 18B are turned on.

Of course, when the first running water detection switch 18A is turned on, the operation signal E1 is output, and when the second running water detection switch 18B is turned on, the operation signal E2 is output. Based on these operation signals E1 and E2, the sprinkler monitor panel 16 can display an operation indicating whether the first head 9 or the second head 10 has operated.

FIG. 3 is a flow valve detecting device 17 of the actuation valve type shown in FIG.
, FIG. 4 is a cross-sectional view of the valve body taken along a horizontal plane, and FIG. 5 is an internal configuration diagram of the switch box.

In FIGS. 3 and 4, reference numeral 21 denotes an operating valve body of the operating valve type running water detecting device 17, in which a valve seat 23 is integrally formed. Also, the operating valve body 2
A first operating shaft 24 is provided in 1. Numeral 25 denotes a valve body which is provided so as to rotate integrally with the first operating shaft 24 as a fulcrum. When the pressures on the primary side and the secondary side of the valve body 25 are balanced, the valve seat 23 is driven by its own weight. When the secondary side is depressurized, the valve is opened by flowing water.

The valve body 25 opens to an opening degree θ2 when the second head 10 with a water discharge amount of 50 liters per minute operates in FIG. 2, and operates when the first head 9 with a water discharge amount of 80 liters per minute operates. Opens to an opening degree θ1 larger than that.

A water supply pipe for supplying pressurized water is connected to the secondary side of the valve body 25 through a connection port 26.
The first head 9 and the second head 10 are connected as shown in FIG. A bolt 29 is provided on the primary side operating valve body 21 of the valve body 25.
The control valve body 30A of the control valve 30 is connected to the control valve body 30. A ball valve 32 that opens and closes the flow path 31 is housed in the control valve body 30A.

The opening and closing of the flow path 31 by the ball valve 32 is performed by a lever (not shown). When the lever 52 is operated 90 degrees counterclockwise from the horizontal direction to the vertical direction, the ball valve 32 rotates and the flow path Open 31. Ball valve 32 and inner wall of actuation valve body 21 and ball valve 32 and control valve body 30A
O-rings 33 and 34 are interposed between the inner walls of the control valve body 30, respectively, and a seal member 35 is interposed at a connection portion between the control valve body 30A and the operation valve body 21.

A water supply main pipe (not shown) is connected to the connection port 30B of the control valve main body 30A, and the water supply main pipe is connected to a fire pump (not shown). A drain valve 37 is connected to a connection port 36 of the operating valve body 21 on the secondary side of the valve body 25,
Drainage can be performed by operating the handle 37A.

Reference numeral 38 denotes a second operating shaft, which is provided in the horizontal direction of the first operating shaft 24 and in the vicinity thereof. As shown in FIG. 4, the second operating shaft 38 is
Are rotatably provided at both ends thereof, and both end portions thereof
From the outside. That is, one shaft end of the second operating shaft 38 projects into the switch box 39, and the other shaft end is provided with the cap 64. A packing 80 is interposed between the second operating shaft 38 and the operating valve body 21 to seal the shaft.

A projection 40 is provided at the center of the second operation shaft 38.
A is fixed to the interlocking member 40 provided with the end portion 2 of the valve body 25.
Contact 5A. One end of an operating lever 41 is fixed to the shaft end of the second operating shaft 38 projecting into the switch box 39, and a weight 42 is attached to the other end of the operating lever 41.
Is provided. The operating lever 41 is connected to the second operating shaft 38.
And rotate together.

When the valve body 25 is closed, the operating lever 41 is at the position shown in the figure against the force of the weight 42 to be lowered. When the valve body 25 is opened, the end 25A rotates clockwise about the first operating shaft 24, and the interlocking member 40 is attached to the end 25A by the action of the weight 42.
A rotates clockwise until A comes into contact, and the second operating shaft 38 also integrally rotates clockwise.

When the first head 10 with a water discharge rate of 50 liters per minute shown in FIG. 2 is operated, the valve body 25 opens to the opening θ2, and the operating lever 41 rotates from the position A to the position B at an angle θ2 ′. . The rotation of the operation lever 41 turns on the second running water detection switch 18B, and outputs an operation signal E2.

As shown in FIGS. 3 to 5, the second running water detection switch 18B includes an adjusting member 43B, an air damper 53B,
It comprises a switch lever 58B and a limit switch 59B.

When the first head 9 with a water discharge rate of 80 liters per minute shown in FIG. 2 is operated, the valve body 25 opens to the opening degree θ1, and the operating lever 41 rotates from the position A to the position C at an angle θ1 '. I do. The rotation of the operation lever 41 turns on the first running water detection switch 18A, and outputs an operation signal E1. At this time, the second running water detection switch 18B has already been turned on to output the operation signal E2.

As shown in FIGS. 3 to 5, the first flowing water detection switch 18A includes an adjusting member 43A, an air damper 53A,
It comprises a switch lever 58A and a limit switch 59A.

The operating lever 41 includes adjusting members 43A, 43
B is provided. The switch lever 58 of the limit switch 59A, 59B is provided above the adjusting members 43A, 43B.
A and 58B are in contact with each other, and when the operating lever 41 is rotated and the contact of the switch levers 58A and 58B is lowered by a predetermined stroke L, the limit switch 59 is turned on.
A and 59B turn on.

Here, as shown in FIG. 3, limit switches 59A, 59A,
In order to turn on 59B and output the operation signals E1 and E2, the descending stroke for switch-on when the intersections A1 and B1 of the vertical center lines of the adjustment members 43A and 43B and the horizontal center line of the lever are set to the initial position. The points A2 and B2 where the line 44 giving L intersects the lines of angles θ1 ′ and θ2 ′ are
The operating lever 41 is moved so that the vertical center lines of 3A and 43B pass.
The adjustment members 43A and 43B are attached to the rim.

More specifically, a line having an angle θ1 ′ is drawn with respect to the horizontal center line of the initial position of the operating lever 41, and a point A2 at which the vertical interval between the two is the downward stroke L for switch-on is determined. Subsequently, a horizontal line 44 passing through the point A2 is drawn to obtain an intersection B2 with the line at the angle θ2 ′. Then, the adjustment members 43A and 43B are arranged at the same horizontal position between the vertical center line passing through the point A2 and the vertical center line passing through the point B2 as shown in the figure.

Here, the adjusting members 43A and 43B are attached to the operating lever 41 through screws through a pair of elongated holes.
It can be adjusted within a certain range in the vertical mounting position.

As described above, the adjusting member 43 is attached to the operating lever 41.
A, 43B, and limit switches 59A, 59B.
The switch levers 58A and 58B of B are held in the switch-off state at the initial position.

In this state, the second water discharge rate of 50 liters per minute
The opening of the valve body 25 by the operation of the head 10 causes the operation lever 4
1 rotates to the position B at the angle θ2 ′, the adjusting member 43B
5 is lowered from the initial position B1 in FIG. 5 to a position B2 which is lowered by a stroke L required for switch-on, and at the same time, the switch lever 58B is also lowered, so that the switch knob 61 of the limit switch 59B is protruded and turned on, and the second flowing water detection switch 18B An operation signal E2 is output.

When the operating lever 41 is rotated to the position C at an angle θ1 ′ by opening the valve body 25 by the operation of the first head 9 at a water discharge rate of 80 liters per minute, the adjusting member 4
3A is the stroke L required to switch on from the initial position
The switch lever 58 at the same time.
When A also decreases, the limit switch 59A similarly disposed at the back of the limit switch 59B in FIG. 5 is turned on, and the operation signal E1 as the first running water detection switch 18A is activated.
Is output.

The air dampers 53A and 53B constitute a part of a delay device provided on the upper side inside the switch box 39, and after a predetermined delay time when the operating lever 41 is operated, the first and second flowing waters of FIG. Detection switch 18A, 1
8B is turned on to set a delay time for outputting an operation signal indicating that the valve body 25 has been operated.

Between the head 56 of the piston shaft 55 of the air dampers 53A and 53B and the nut 57, the second
As shown on the flowing water detection switch 18B side, one end of a switch lever 58B is fixed, and the other end of the switch lever 58B is pivotally supported by a limit switch 59B via a mounting portion 60. When the operating lever 41 is at the position indicated by B1, the adjusting member 43B is in contact with the lower surface of the switch lever 58B and pushes the switch lever 58B upward to the position indicated by A1.

When the operating lever 41 is rotated down from the position indicated by A to the position indicated by B by the angle θ2 ′, the abutment of the adjusting member 43A on the lower surface of the switch lever 58B is released. 58B is rotated counterclockwise from the position indicated by B1 to the position indicated by B2 due to the force of the spring 91 provided below the second running water detection switch 18B and the weight of the piston 62 in the air damper 53B. The switch knob 61B is pushed out by the downward movement of the switch lever 58B, and the contact in the limit switch 59B is closed and turned on.

In this case, since one end of the switch lever 58B is fixed to the piston shaft 55 of the air damper 53B, after the operation lever 41 is actuated by the action of the air damper 53B, the second flowing water detection switch 18B is turned off by a predetermined delay. Turns on with a delay of time.

The delay device 92B for this purpose includes an air damper 53B, a piston shaft 55, a head 56, a piston 6
2. It is composed of a delay adjusting screw 63. That is, since the switch lever 58B is connected to the piston 62 housed in the air damper 53B via the piston shaft 55, the downward movement of the switch lever 58B is caused by the downward movement of the piston 62 in the air damper 53B. and when,
By taking in the external air into the air damper 53B through the air passage, the air is gradually and gradually made. In this case, the delay time can be adjusted by adjusting the amount of air entering the air damper 53B.

For this reason, a delay adjusting screw 63 is provided on the upper part of the air damper 53B, and when it is necessary to adjust the delay time, the adjustment is performed by the delay adjusting screw 63. Specifically, the amount of air entering the air damper 53, that is, the opening degree of the air passage is changed by using a flathead screwdriver for the delay adjustment screw 63 to adjust the delay time. For example, turning the delay adjusting screw 63 counterclockwise increases the amount of air entering and shortens the delay time, and turning clockwise decreases the amount of air entering and increases the delay time.

A similar dambar structure is provided on the first flowing water detection switch 18A side. A switch 46 for detecting opening and closing of the control valve 30 by the lever 52 is provided below the switch box 39.

In FIG. 2, the test using the first and second end test valves 11A and 11B is performed as follows. The first terminal test valve 11A has a water discharge amount of the first head 9 of 80.
Liters, the first terminal test valve 11
When A is opened, the branch pipe 6 on the right side of the actuation valve type running water detection device 17 is opened.
In this case, the running water corresponding to the water discharge amount of 80 liters per minute is generated, and the actuated valve type flow detecting device 17 opens the valve. In this case, the valve opens to the valve opening θ1 corresponding to the water discharge amount of 80 liters. Both the switch 18A and the second running water detection switch 18B are turned on to output the operation signals E1 and E2. If the operation signals E1 and E2 are normally obtained in the sprinkler monitoring panel 16, the operation of the first head 9 is displayed.

The second end test valve 11B has the second head 10
Is set to 50 liters per minute, the second terminal test valve 11B is opened, the valve of the actuated valve type running water detecting device 17 opens to a valve opening θ2 corresponding to 50 liters of flowing water per minute. , The second flowing water detecting device 18B is turned on to output the operation signal E2. For this reason, the sprinkler monitoring control panel 16 obtains the operation signal E2, and thereby the second head 10
Will be displayed.

In the terminal test valve of FIG. 2, the first terminal test valve 11A and the second terminal test valve 11B are provided in parallel to perform both 80 liter and 50 liter tests. Both tests may be performed by adjusting the opening of the valve with a test valve.

FIG. 6 shows a third embodiment of a sprinkler fire extinguishing system according to the present invention, in which first and second heads having different water discharge amounts are arranged in the same branch pipe system, but the operation display is It is characterized in that it is performed collectively.

In FIG. 6, the equipment configuration around the fire extinguishing pump 1 is the same as that of the first embodiment shown in FIG. 1, and a branch pipe 6 connected to the water supply main pipe 4 is provided with a running water detecting device 7, The branch pipe 6 on the secondary side of the device 8 is connected to the protection sections A and B, and the first head 9 having a water discharge rate of 80 liters per minute.
And the second head 10 having a water discharge rate of 50 liters per minute. Further, the end of the branch pipe 6 is provided with an end test valve 11 and an orifice 12 for discharging 50 liters of water per minute.

The water flow detecting device 7 is the first head 9 connected to the branch pipe 6 on the secondary side and having a discharge amount of 80 liters and the second head 10 having a discharge amount of 50 liters, which is the smaller one of the first head 9 and the second head 10 having the discharge amount The operation is performed by detecting the flowing water of the two heads 10 with a discharge amount of 50 liters or more.

That is, even when 80 liters of water per minute is discharged by the operation of the first head 9 installed in the protection section A, the flowing water detecting device 7 can detect the second head 10 provided in the protection section B. It operates whenever water is discharged at a rate of 50 liters per minute during operation. When the water flow detection switch 8 is turned on, the operation signals E1 and E2 are output to the sprinkler monitor panel 16 to display the operation.

For this reason, the sprinkler monitoring panel 16 cannot distinguish between the operation of the first head 9 in the protection section A and the operation of the second head 10 in the protection section B. Since different first heads 9 and second heads 10 can be provided in a mixed manner, and only one running water detecting device 7 is required, compared to the first embodiment of FIG. 1 and the second embodiment of FIG. Equipment costs can be reduced.

FIG. 7 shows a fourth embodiment of the sprinkler fire extinguishing system according to the present invention, which is the third embodiment of FIG.
Regarding the embodiment, the first head 9 and the second
The diameter of the piping system is determined so as to be adapted to each of the heads 10.

In FIG. 7, the equipment configuration around the fire extinguishing pump 1 is the same as that of the third embodiment in FIG. 6, and the branch pipe 6 connected to the water supply main pipe 4 is provided with the flowing water detecting device 7, and the same flowing water detecting device is provided. The first branch 9 is divided into a protection section A and a protection section B in the secondary pipe 6 on the secondary side of 7, and the first head 9 and the second head 10 are provided. Further, the terminal test valve 11 and the orifice 12 are provided at the end of the branch pipe. This is the same as the third embodiment in FIG.

Here, in the second embodiment of FIG. 7, the diameter of the branch pipe 6A on the secondary side of the flowing water detecting device 7 is set to 80 liters per minute, which is a large water discharge amount provided in the protection section A. It is a suitable 80-liter branch pipe 6A. This 8
The first head 9 and the second head 10 having different water discharge amounts in the protection sections A and B are connected to the 0-liter branch pipe 6A by dropping down pipes.

As the falling pipe, the first head 9 having a water discharge amount of 80 liters per minute in the protection section A is connected with a 80 liter fall pipe 9a having a diameter corresponding to the water discharge amount of 80 liters per minute. On the other hand, in the protection section B, the 50 liter falling pipe 10a having a diameter corresponding to the water discharge amount of the second head 10 of 50 liters per minute.
Connected by

As described above, the branch pipe connecting the heads is a branch pipe 6A for 80 liters adapted to the head having a larger water discharge amount, that is, the branch pipe 6A for 80 liters. Are 80 liter falling pipes 9a and 50 liter falling pipes 10 corresponding to the respective water discharge rates of 80 liters and 50 liters.
By setting to a, the pipe system on the second head 10 side with a small amount of water discharge can be reduced to a necessary diameter, as compared with a case where all the pipe systems correspond to the water discharge amount of 80 liters of the first head. Piping work can be facilitated, and equipment costs can be reduced.

In the above embodiment, the first head 9 having a large water discharge amount of 80 liters per minute is provided in the protection section A on the water supply main pipe 4 side, and the water discharge amount is large in the protection section B on the terminal side. Although the second head 10 as small as 50 liters per minute is provided, the protection section A side may be the second head 10 and the protection section B side may be the first head 9, and further limited to the two protection sections A and B. However, the first head and the second head can be mixed for one or three or more protection sections on a protection section basis.

Further, since the second head shown in the above embodiment is smaller than the water discharge amount of the first head,
In particular, it is better to install the second head in a place where the user does not like the flood. In order to further prevent flood damage at the time of water discharge in the second head, it is more preferable to use an on / off type sprinkler head that automatically stops water discharge when a fire is extinguished.

In this case, when the on / off type sprinkler head extinguishes itself and recovers itself, the flowing water detecting device stops outputting the operation signal. The stop of the operation signal may be detected by the sprinkler monitoring panel 16 and the display mode of the operation display may be changed to display that the sprinkler head is stopping water discharge. For example, when the water discharge is stopped, the operation indicator light may be flashed, or the stopped state may be displayed using another indicator light.

The present invention also relates to the first embodiment shown in the above embodiment.
The present invention is not limited to the head 9 and the second head 10, and any sprinkler head having a different water discharge amount can be directly applied to the case where appropriate sprinkler heads are provided in the same piping system in units of protection sections.

[0102]

As described above, according to the present invention, the fire extinguishing performance of the first piping corresponding to, for example, a normal closed-type sprinkler head is the same as that of the first closed-type sprinkler head in the same piping system. Since the second head can be provided with a smaller amount of water discharge per unit time than that, there is no need to draw out a dedicated water supply pipe such as a branch pipe from the water supply main pipe for the second head, and dislike water damage in the same pipe system. It is possible to easily and easily install the second head, which has a small amount of water discharged and does not change the fire extinguishing performance, in a special protective section such as a computer room.

In this case, the first head and the second head are provided at the inlet side of the piping system of the first head and the second head at the inlet side of the piping system of the second head. The operation of the second head can be individually displayed.

Also, as a running water detecting device in which the first head and the second head having different water discharge amounts are installed in the same piping system in units of protection sections, the opening degree of the valve changes in accordance with the water flow accompanying the water discharge amount. By using a valve-type running water detection device,
The operation of the first head and the second head having different water discharge amounts can be detected and displayed by one running water detection device.

If it is not necessary to display the operation of the first head and the second head connected to the same piping system and having different water amounts in a particular manner, the water discharge amount of the second head having the smaller water discharge amount is used. It is only necessary to use the flowing water detecting device that operates by the above-described water discharge, and the flowing water detecting device can be simplified and the equipment configuration can be reduced.

Further, by determining the diameter of the falling pipe connecting the water distribution pipe and the head adapted to the first head and the second head having different water discharge amounts, the diameter of the pipe can be reduced as the water discharge amount decreases. This can simplify equipment construction and reduce overall equipment costs.

Further, since at least the second head is an on / off type sprinkler head, facility work can be simplified and further flood damage can be suppressed.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a first embodiment of the present invention in which a piping system of a second head is connected to a piping system of a first head via a flowing water detection device.

FIG. 2 is an explanatory view of a second embodiment of the present invention in which a first head and a second head are mixedly arranged in the same piping system and the operation of each head can be distinguished.

FIG. 3 is a cross-sectional view of the running water detection device used in FIG. 2;

FIG. 4 is a cross-sectional view of the valve body of FIG. 3 cut along a horizontal plane.

FIG. 5 is an internal configuration diagram of a switch box.

FIG. 6 is an explanatory view of a third embodiment of the present invention in which a first head and a second head are mixedly arranged in the same piping system.

FIG. 7 is an explanatory view of a fourth embodiment of the present invention in which a first head and a second head are mixedly arranged in the same piping system, and the pipe diameter is determined corresponding to each head.

FIG. 8 is an explanatory view of a conventional facility.

[Explanation of symbols]

1: Fire pump 4: Water supply main pipe 6: Branch pipe 6A: First water supply pipe 6B: Second water supply pipe 7: Flowing water detecting device 7A: First flowing water detecting device 7B: Second flowing water detecting device 8: Flowing water detecting switch 8A , 18A: First running water detection switch 8B, 18B: Second running water detection switch 9: First head (closed type sprinkler head: 80 l / min) 10: Second head (scanning type, large drop type, pulse emission type) (Sprinkler head: 50 l / min) 11, 21: Terminal test valve 11A: First terminal test valve 11: Second terminal test valve 12: Orifice 15: Pump control panel 16: Sprinkler monitoring panel 17: Actuated valve type water detection device 21: Operating valve valve element 23: Valve seat 24: First operating shaft 25: Valve element 40: Interlocking member 41, 41A, 41B: Operating lever 43, 43A, 43 : Adjusting member 58,58A, 58B: switch lever

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tsuyoshi Shimokawa 2-10-43 Kamiosaki, Shinagawa-ku, Tokyo Ho Chiki Co., Ltd. F-term (reference) 2E189 CC02 CF04 KB04

Claims (9)

[Claims] The fire extinguishing water is connected to a first water supply pipe drawn into a protection section through a first water detection device from a water supply main line supplied with pressurized fire extinguishing water, and operates at a predetermined temperature due to a hot air flow of a fire. A first head for spraying fire-extinguishing water, and a second water-supply pipe drawn out through a second flowing-water detecting device following the first water-supply pipe, and operating at a predetermined temperature due to a hot air flow of a fire to extinguish fire-extinguishing water; A sprinkler fire extinguishing facility, comprising: the first head for spraying water; and a second head having a fire extinguishing performance equal to or higher and having a small amount of water discharged per unit time. 2. The sprinkler fire extinguishing system according to claim 1, wherein the second flowing water detecting device detects flowing water in a second water supply pipe when the second head operates, and opens a flow path. A second operation signal is sent to the outside, and the first flowing water detecting device is configured to detect the flowing water when the first head is operated, and the first flowing water pipe when the second flowing water detecting device opens the flow path. A sprinkler fire extinguishing system characterized by detecting flowing water to open a flow path and sending a first operation signal to the outside. 3. A first head connected to a water supply pipe drawn out of a water supply main line to which fire-extinguishing water is supplied under pressure to a protection section and operated at a predetermined temperature by a hot air flow of a fire to spray fire-extinguishing water; A second head that is connected to the water supply pipe, operates at a predetermined temperature due to the hot air flow of the fire, and sprays fire-extinguishing water, and has a fire-extinguishing performance equal to or higher than the first head and a small amount of water discharged per unit time; The water supply pipe is provided in a drawer portion with respect to a water supply main pipe, and detects a flow of water when at least one of the first head and the second head is operated, and opens a valve to an opening degree corresponding to a water discharge amount of each head. A sprinkler fire extinguishing system, comprising: a running water detection device that opens and sends a first operation signal and a second operation signal to the outside according to a corresponding opening degree of each head. 4. The sprinkler fire extinguishing system according to claim 3, wherein the water supply pipe has the same amount of water discharged per unit time of the first head and the same amount of water discharged per unit time of the second head. A sprinkler fire extinguishing system, characterized in that a test valve device for selecting and discharging a quantity is provided. 5. A second head connected to a water supply pipe drawn out from a water supply main line to which fire-extinguishing water is supplied under pressure to a protection section and operated at a predetermined temperature by a hot air flow of a fire to spray fire-extinguishing water, A second head that is connected to the water supply pipe, operates at a predetermined temperature due to the hot air flow of the fire, and sprays fire-extinguishing water, and has a fire-extinguishing performance equal to or higher than the first head and a small amount of water discharged per unit time; A water flow detecting device that is provided at a drawer portion of the water supply pipe with respect to a water supply main pipe, detects a flow of water equal to or more than the amount of water discharged from the first head, opens a valve, and sends an operation signal to the outside. Features sprinkler fire extinguishing equipment. 6. The sprinkler fire extinguishing system according to claim 5, wherein the diameter of a downcomer pipe connecting the first head and the second head to the water supply main pipe is set to each of the first head and the second head. A sprinkler fire extinguishing system, characterized in that it has a value commensurate with the amount of water discharged per unit time. 7. The sprinkler fire extinguishing system according to claim 1, wherein a test valve device for discharging the same amount of water as the second head discharges per unit time is provided in the water supply pipe. Sprinkler fire extinguishing equipment. 8. The sprinkler fire extinguishing system according to claim 1, wherein the first head opens the internal flow path by dropping off due to thermal decomposition when the heat-sensitive portion reaches a predetermined temperature due to a hot air flow of the fire. A closed sprinkler head for discharging fire-extinguishing water, wherein the second head is a scanning sprinkler head that moves and scans a substantially band-shaped or spot-shaped spraying pattern within a predetermined protection range, and a nozzle by a jet of fire-extinguishing water. Large sprinkler heads that sprinkle water droplets with a large particle size randomly from the slit holes by rotating the part at high speed, and / or pulse emission sprinkler heads that periodically repeat instantaneous concentrated radiation of fire-fighting water. Features sprinkler fire extinguishing equipment. 9. The sprinkler fire extinguishing system according to claim 1, wherein said second head is an on / off type sprinkler head.