JPH09276437A - Fire extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge water only near a fire generation part and to improve reliability as a fire extinguishing equipment since the water is discharged for the first time when two sprinkler heads connected to different pipes are operated by providing the sprinkler head of a close type in the pipe for discharging the water. SOLUTION: At the time of a normal state, the water 15 filled inside the pipe 7 for a sensing head. When a fire is generated, one or plural sprinkler heads 18 of a low operation temperature, that is high sensitivity, connected to the pipe 9 for discharging the water are operated. At this time, since the water is not filled inside the pipe 9 for discharging the water, the water is not discharged. When an ambient temperature gradually becomes high, the sensing head 6 of a high operation temperature, that is low sensitivity, connected to the pipe 7 for the sensing head is also operated and the water filled inside the pipe 7 is discharged from the head 6. Then, simultaneously opening valves 1 are opened, fire extinguishing fluid is sent to the pipe 9 for discharging the water, the fire extinguishing fluid is discharged only from the already opened sprinkler head 18 and the fire is extinguished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fire extinguishing equipment for extinguishing a fire.

[0002]

2. Description of the Related Art FIG. 3 shows a fire extinguishing system using a simultaneous open valve. Reference numeral 1 denotes a simultaneous opening valve, which includes a primary chamber 2, a cylinder chamber 3, and a secondary chamber 4, and normally the primary chamber 2 and the secondary chamber 4 are in a state where they are not communicated by a valve element. A pipe 7 for a sensing head, to which a closed-type sprinkler head 6 as a sensing head is attached, is connected to the cylinder chamber 3. Also the secondary chamber 4
A water discharge pipe 9 to which a foam head 8 as an open type water discharge head is attached is connected to. In the primary chamber 2, an automatic alarm valve 11 which is installed in each protected area and opens due to a pressure drop on the secondary side is connected via a pipe, and the primary side of the automatic alarm valve 11 is connected to a pump 12 via a pipe. Connected with. Reference numeral 13 is a pump control panel, 14 is a motor for driving the pump 12, 15 is a water tank, and 16 is a pipe 7 for a sensing head.
It is a normally closed manual start valve that is attached to the end of the and can be opened and closed manually. Although not shown, the pump 12
A mixer having a foam stock solution tank connected to one end thereof is connected between and the automatic alarm valve 11.

At the time of monitoring, the cylinder chamber 3 of the simultaneous opening valve 1 and the sensing head pipe 7 are filled with water. This state is created by gradually supplying the water in the water tank 15 to the primary chamber 2 of the simultaneous opening valve 1. That is, the water that has passed through the check portion 5 flows into the cylinder chamber 3, and the inside of the sensing head pipe 7 is filled with water. The primary chamber 2 and the cylinder chamber 3 of the simultaneous opening valve 1 are kept at the same pressure through the chuck portion 5, and the valve is closed due to the difference in pressure receiving area above and below the valve body.

When a fire occurs, the sprinkler head 6
Is operated, that is, the heat-sensitive part made of solder or the like is melted to open the water discharge port, and the water filled in the cylinder chamber 3 and the sensing head pipe 7 is discharged from the sprinkler head 6.
Then, the pressure in the primary chamber 2 becomes higher than the pressure in the cylinder chamber 3, and the valve body is pushed up. This allows the secondary chamber 4
Since the primary chamber 2 and the primary chamber 2 communicate with each other, the fire extinguishing liquid, that is, foam is ejected from the open-type foam head 8.

The automatic alarm valve 11 is opened due to the pressure drop on the secondary side, and at the same time sends a fire extinguishing start signal to the pump control panel 13. When the pump control board 13 receives the signal, it drives the motor 14 to start the pump 12. As a result, the water in the water tank 15 is mixed with the foamed stock solution from the mixer (not shown), and the mixed solution as the fire extinguishing solution is opened.
The water is supplied to the foam head 8 via the. Even if the manual start valve 16 is opened, the fire extinguishing liquid (foam) is ejected from the foam head 8 as in the case where the sensing head 6 operates.

[0006]

The simultaneous opening valve is opened when the sensing head detects the heat of fire as described above, and the fire extinguishing liquid is sent to the secondary chamber. An open type head is attached to the pipe connected to the next chamber side. Therefore, at the time of fire, the mixed liquid is discharged from all of the plurality of foam heads, and local injection or water discharge cannot be performed. Also, when extinguishing the fire by opening the manual start valve, if the water filled in the sensing head piping is not completely drained,
Since no fire extinguishing liquid is delivered to the foam head, it takes time for the fire extinguishing liquid to be sprayed into the fire area.

Further, when filling the pipe 7 for the sensing head, it is necessary to gradually supply water from the primary chamber. This is to prevent the valve body from being pushed up if water is not slowly sent to the secondary chamber, where it is drained from the open head and wets the protected area.

[0008]

A fire extinguishing system according to the present invention comprises a simultaneous opening valve to which a pipe for a sensing head, to which a closed type sensing head is attached, and a pipe for discharging water, to which a water discharging head is attached, are connected. In the fire extinguishing equipment, the water discharge head is composed of a closed-type sprinkler head, and the sprinkler head connected to the water discharge pipe operates faster than the sprinkler head connected to the sensing head pipe. Is.

Further, in a fire extinguishing facility equipped with a simultaneous opening valve for connecting a sensing head pipe to which a closed type sensing head is attached and a water discharge pipe to which a water discharge head is attached, the pipe for the sensing head It is characterized in that it is provided with a pipe that connects the water discharge pipe and a valve that is provided in the middle of the pipe and is normally closed.

[0010]

1 and 2 are system diagrams of a fire extinguishing facility according to the present invention. The same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. In FIG. 1, the cylinder chamber 3 of the simultaneous opening valve 1 is connected to a sensing head pipe 7 to which a closed sensing head 6 is attached. The secondary chamber 4 is connected to a water discharge pipe 9 to which a water discharge head 18 is attached. The water discharge head 18 is composed of a closed sprinkler head 18, and has a higher sensitivity than the sensing head 6 connected to the sensing head pipe 7. For example, the operating temperature of the water discharge head 18 is 68 ° C.
The operating temperature of is set at 82 ° C.

The sensing head 6 and the water discharge head 1
The mounting heights of 8 are almost the same, or the water discharging head is mounted at a higher position. Further, the water discharge pipe 9 and the sensing head pipe 7 are, for example, arranged in parallel with each other, and the sensing head 6 and the water discharge head 1 attached to the pipes 7 and 9 are attached.
8 are installed relatively close to each other, and in the event of a fire, the pipes 7 and 9 are pulled out from the simultaneous open valve 1 so that at least one of the sprinkler head 18 and at least one of the sensing heads 6 can be operated and placed in the protected area. Set up.

The end of the sensing head pipe 7 and the end of the water discharge pipe 9 are connected by a connection pipe 20. A second manual start valve 21 which is normally closed is provided in the middle of the connecting pipe 20. Reference numeral 16 is a first manual start valve having the same function as the conventional example. The connecting pipe 20 is not located between the ends of the pipes 7 and 9, but in the middle of the pipe 7 for the sensing head, for example, between the sensing heads 6 and 6 and the middle of the water discharge pipe 9 (sprinkler head 1).
8) may be connected.

In such fire extinguishing equipment, in the normal state, the pipe 7 for the sensing head is filled with water as described in the prior art. When a fire occurs, first, one or a plurality of sprinkler heads 18 having a low operating temperature, that is, having a high sensitivity, which are connected to the water discharge pipe 9, operate.
At this time, since the water discharge pipe 9 is not filled with water, the water is not yet discharged. When the ambient temperature gradually increases, the sensing head 6 connected to the sensing head pipe 7 and having a high operating temperature, that is, the sensitivity is low, and the water filled in the pipe 7 is discharged from the head 6. It is discharged.

Then, as in the conventional example, the simultaneous opening valve 1 is opened, the extinguishing liquid is sent to the water discharge pipe 9, and the extinguishing liquid is discharged only from the sprinkler head 18 which is already open to extinguish the fire. . As described above, in the fire extinguishing equipment of the present invention, the sprinkler head of the closed type is attached to the water discharge pipe 9, and the sprinkler head 18 that operates during a fire is used.
Since water is discharged only from the water source, it is possible to discharge water locally, that is, only to the place where the fire has occurred, and it is possible to prevent water damage.

The best effect of this fire extinguishing equipment is that the sprinkler head 18 connected to the water discharge pipe 9 and the sensing heads 6 connected to the sensing head pipes 7 do not operate, that is, at least one does not operate at a time. And the point is that water is not discharged. Since the sprinkler head protrudes from the ceiling, a long rod or the like may cause a violent accident. However, by ejecting water only by the operation of the two sprinkler heads 6 and 18, it is possible to explode. It is possible to prevent accidental water discharge due to.

By the way, the sensitivity of the sprinkler head 18 attached to the water discharge pipe 9 is set higher than that of the sprinkler head 6 attached to the pipe 7 for the sensing head. On the contrary, the sprinkler head 6 has a higher sensitivity. It may be. In this case, the sensing head 6 operates first, and the simultaneous open valve 1 opens. This time,
The fire extinguishing liquid will be sent to the water discharge pipe 9, but since no sprinkler head 18 connected to this pipe 9 is open, from the sensing head 6 where the fire extinguishing liquid has operated via the check part 5. It will be drained slowly. It should be noted that the reason why the water is not vigorously discharged from the head 6 here is that the flow path of the check portion 5 is small, and the amount of water discharged (outflow) from the sprinkler head 18 is smaller than that actually discharged. Therefore, the damage of water loss can be reduced even in the event of an outburst. When the ambient temperature rises and the sprinkler head 18 operates, the fire extinguishing liquid is vigorously discharged from the sprinkler head 18 to extinguish the fire.

Next, a case of extinguishing a fire using the second manual start valve 21 will be described. A fire occurs, and first, one or a plurality of sprinkler heads 18 having a low operating temperature connected to the water discharge pipe 9 operate. When the second manual start valve 21 is opened before the sensing head 6 operates, the water filled in the sensing head pipe 7 passes through the connecting pipe 20 and flows into the water discharge pipe 9. It flows, is already operating and is sprayed from the open sprinkler head 18.
After that, the simultaneous release valve 1 is opened, and the fire extinguishing liquid is sent to the water discharge pipe 9 in earnest. As described above, at the time of manual opening, the water filled in the sensing head pipe 7 is discharged from the sprinkler head 18 opened by the fire. It can be discharged. Note that the second manual start valve 21 and the connection pipe 20 may be provided in the equipment in which the open type head is connected to the conventional water discharge pipe.

By providing the second manual start valve 21, it is not necessary to provide the first manual start valve 16,
For example, at the time of checking the operation of the simultaneous opening valve 1, if it is not desired to discharge water over the entire protected area, the first manual start valve 16 may be used.

In the first embodiment of FIG. 1, since the sprinkler head 18 connected to the water discharge pipe 9 operates faster than the sprinkler head 6 connected to the sensing head pipe 7, Although the sensitivity is changed, the sprinkler head attached to the water discharge pipe 9 can be operated first by the other two methods as shown in FIG. 2 below.

FIG. 2 is a system diagram showing a second embodiment of the present invention. The same parts as those in FIG. The number of sprinkler heads 28 connected to the water discharge pipe 9 is larger than the number of sensing heads 6 connected to the sensing head pipe 7. If the number of sprinkler heads 28 connected to the water discharge pipe 9 is increased in this way, the sprinkler head 28 connected to the water discharge pipe 9 operates first even if the sprinkler head 28 and the sensing head 6 have the same sensitivity. It is possible to

In this figure, between the cylinder chamber 3 of the simultaneous opening valve 1 and the sensing head pipe 7, the sensing head pipe 7 is positioned below the water discharge pipe 9. A downcomer 23 is provided. The sprinkler head 28 connected to the water discharge pipe 9 is attached upward. Compared to the sensing head 6 connected to the sensing head pipe 7 with the above configuration, the sprinkler head 28 of the water discharge pipe 9 is installed in the vicinity of the ceiling 24. The sprinkler head 28 operates before the sensing head 6. this is,
In general, when a fire occurs, the hot airflow generated from the fire point rises and flows along the ceiling surface, and it becomes hot from a place near the ceiling surface. This is because it will be faster.

According to the present invention, since the closed sprinkler head 18 is attached to the water discharge pipe 9, even when water is rapidly sent from the primary chamber 2 when the water filling state is created, the protected area is provided. Is not submerged in water, and if water is rapidly sent, the valve body is pushed up and the water discharge pipe 9 is filled, so that water can be discharged quickly when the sprinkler head 18 operates. Further, if water is supplied while the second manual start valve 21 is opened, the water will flow to the sensing head pipe 7, so that the sensing head pipe 7 can be filled with water quickly. Further, at the time of monitoring, the second manual start valve 21 may be slightly opened to allow the fire extinguishing liquid in the sensing head pipe 7 to flow into the water discharge pipe 9.
By doing so, a water leak test of the sprinkler head as the water discharge head can be performed.

In this embodiment, the case where all the water discharge heads attached to the water discharge pipe 9 are closed sprinkler heads has been described. For example, an open head and a closed head are alternately arranged in the water discharge pipe. Even if it is attached to, it becomes possible to perform local water discharge compared to the conventional case. In this case, the open-type head and the closed-type head may be configured by heads having different shapes. For example, the open-type head may be a frame-type head and the closed-type head may be a flash-type sprinkler head. For example, from the outside, the head type can be seen at a glance, that is, which is the open type or the closed type.

The water discharge head may be any closed head, for example, a foam head with a heat-sensitive mechanism. Moreover, although the case where the fire extinguishing liquid is a mixed foam liquid has been described, it goes without saying that it may be water.

[0025]

EFFECT OF THE INVENTION In a fire extinguishing facility equipped with a simultaneous opening valve,
Since the water discharge head is composed of a closed type sprinkler head, it is possible to discharge water locally, that is, only in the vicinity of the fire occurrence site. Further, since the two sprinkler heads connected to the separate pipes operate to discharge water, the reliability of the fire extinguishing equipment can be improved.

Further, in a fire extinguishing facility equipped with a simultaneous opening valve, a pipe for connecting the sensing head pipe and the water discharge pipe and a valve provided in the middle of the pipe and normally closed are used to prevent a fire. At the time of occurrence, at the same time as opening the manual start valve, the water filled in the sensing head pipe can be discharged from the water discharge head of the water discharge pipe, and the fire can be extinguished quickly.

[Brief description of drawings]

FIG. 1 is a system diagram showing fire extinguishing equipment of the present invention.

FIG. 2 is a system diagram showing a fire extinguishing facility according to a second embodiment of the present invention.

FIG. 3 is a system diagram showing a conventional fire extinguishing facility.

[Explanation of symbols]

1 simultaneous release valve, 2 primary chamber, 3 cylinder chamber, 4 secondary chamber, 5 check part, 6 sensing head, 7 sensing head piping, 8 foam head (water discharging head), 9 water discharging piping, 11 automatic alarm Valve, 12 pump, 13 pump control panel, 14 motor, 15 water tank, 16 first manual start valve, 18 sprinkler head, 20 connection pipe, 21 second manual start valve, 23 stop pipe, 24
Ceiling, 28 sprinkler heads,

Claims (6)

[Claims] 1. A fire extinguisher equipped with a simultaneous opening valve for connecting a sensing head pipe to which a closed type sensing head is attached and a water discharge pipe to which a water discharge head is attached, wherein the water discharge pipe is closed. A fire extinguisher equipped with a sprinkler head of the type. 2. The closed sprinkler head according to claim 1, which is connected to the water discharge pipe, is connected to the sensing head pipe. Fire extinguishing equipment having higher sensitivity than the sensing head 3. The closed sprinkler head connected to the water discharge pipe is mounted at a position higher than the sensing head connected to the sensing head pipe. Characteristic fire extinguishing equipment. 4. The closed sprinkler head connected to the water discharge pipe has a larger number of connections than the sensing heads connected to the sensing head pipe. Fire extinguishing equipment. 5. The water discharge pipe and the sensing head pipe are arranged in the same protected area, and at least one of each of the water discharge head and the sensing head operates in the event of a fire, so that the water discharge pipe is operated. The fire extinguishing system according to claim 1, wherein the head and the sensing head are installed relatively close to each other. 6. A fire extinguisher equipped with a simultaneous opening valve, to which a closed sensing head is attached, and a pipe for the sensing head filled with water and a water discharge pipe to which the water discharge head is attached are connected. A fire extinguishing facility comprising: a pipe for connecting a pipe for a sensing head and the pipe for discharging water; and a valve provided in the middle of the pipe and normally closed.