JP3852865B2 - Fire extinguishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire extinguishing facility that extinguishes a fire.
[0002]
[Prior art]
Fig. 3 shows a fire extinguishing facility using a simultaneous release valve. Reference numeral 1 denotes a simultaneous opening valve, which includes a primary chamber 2, a cylinder chamber 3, and a secondary chamber 4. Normally, the primary chamber 2 and the secondary chamber 4 are not in communication with each other by a valve element. The cylinder chamber 3 is connected to a sensing head pipe 7 to which a closed sprinkler head 6 as a sensing head is attached. The secondary chamber 4 is connected to a water discharge pipe 9 to which a foam head 8 as an open water discharge head is attached. In the primary chamber 2, an automatic alarm valve 11, which is installed for each protection 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 the pipe. Connected. 13 is a pump control panel, 14 is a motor for driving the pump 12, 15 is a water tank, and 16 is a normally-started manual start valve which is attached to the end of the pipe 7 for the sensing head and can be manually opened and closed. In addition, although illustration is abbreviate | omitted, between the pump 12 and the automatic alarm valve 11, the mixer with which the foam stock solution tank was connected to one end is connected.
[0003]
At the time of monitoring, the cylinder chamber 3 and the sensing head pipe 7 of the simultaneous release valve 1 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 sensing head pipe 7 is filled with water. The primary chamber 2 and the cylinder chamber 3 of the simultaneous opening valve 1 are maintained at the same pressure through the check portion 5, and the valve is closed due to the difference in pressure receiving area above and below the valve body.
[0004]
When a fire occurs, the sprinkler head 6 operates, that is, the heat sensitive part made of solder or the like is melted to open the water outlet, and the water filled in the cylinder chamber 3 and the sensing head pipe 7 is discharged from the sprinkler head 6. Water is discharged. If it does so, the pressure of the primary chamber 2 will increase rather than the pressure in the cylinder chamber 3, and a valve body will be pushed up. As a result, the secondary chamber 4 and the primary chamber 2 communicate with each other, so that a fire extinguishing liquid, that is, bubbles are ejected from the open-type bubble head 8.
[0005]
The automatic alarm valve 11 is opened due to the pressure drop on the secondary side and sends a fire extinguishing start signal to the pump control panel 13. When receiving the signal, the pump control panel 13 moves the motor 14 to start the pump 12. Thereby, the water in the water tank 15 is mixed with the foam stock solution from a mixer (not shown), and is sent to the foam head 8 through the simultaneous opening valve 1 in which the mixed liquid as a fire extinguishing liquid is opened. Even if the manual start valve 16 is opened, the fire extinguishing liquid (foam) is ejected from the foam head 8 in the same manner as when the sensing head 6 is operated.
[0006]
[Problems to be solved by the invention]
As described above, the simultaneous opening valve is opened when the sensing head senses the heat of the fire, and fire extinguishing liquid is sent to the secondary chamber. Due to its configuration, the piping is connected to the secondary chamber side. An open type head is attached. For this reason, a mixed liquid will be taken out from all the foam heads at the time of a fire, and local injection or water discharge cannot be performed. Also, when extinguishing fire with the manual start valve open, the fire head is not delivered to the foam head unless all the water filled in the sensing head pipe is drained. It takes time to complete.
[0007]
Further, when the sensing head pipe 7 is filled with water, it is necessary to gradually feed water from the primary chamber. This is in order to prevent the valve body from being pushed up if it is not slowly fed, fed to the secondary chamber, drained from the open head, and wet the protected area.
[0008]
[Means for Solving the Problems]
The fire extinguishing equipment according to the present invention includes a simultaneous opening valve having a primary chamber, a secondary chamber, and a cylinder chamber, a pipe for a sensing head connected to the cylinder chamber, to which a closed type sensing head is attached, and the secondary chamber. A water discharge pipe to which the water discharge head is connected, and a pump connected to the primary chamber via the pipe, and when the sensing head is operated, the simultaneous release valve is opened to release the water discharge pipe. In a fire extinguishing facility in which fire extinguishing liquid is supplied to the water, a closed sprinkler head having higher sensitivity than the sensing head is provided in the water discharge pipe, and when the closed sprinkler head operates and the sensing head operates. Water is discharged from the operated closed sprinkler head.
[0009]
Further, a simultaneous opening valve having a primary chamber, a secondary chamber and a cylinder chamber, a pipe for a sensing head connected to the cylinder chamber and mounted with a closed type sensing head, and connected to the secondary chamber for water discharge A water discharge pipe to which the head is attached, and a pump connected to the primary chamber via the pipe. When the sensing head is operated, the simultaneous release valve is opened, and the fire extinguishing liquid is supplied to the water discharge pipe. In a fire extinguishing system, a closed sprinkler head provided in a water discharge pipe, a pipe connecting the sensing head pipe and the water discharge pipe, and a manual start that is provided in the middle of the pipe and is normally closed When the manual activation valve is opened, the water filled in the sensing head pipe flows into the water discharge pipe, and the simultaneous release valve is opened.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 are system diagrams of the fire extinguishing equipment 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 is omitted. In FIG. 1, a sensing head pipe 7 to which a closed type sensing head 6 is attached is connected to the cylinder chamber 3 of the simultaneous opening valve 1. 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 constituted by a closed sprinkler head 18 and has 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 set to 68 ° C., and the operating temperature of the sensing head 6 is set to 82 ° C.
[0011]
The mounting heights of the sensing head 6 and the water discharge head 18 are substantially the same, or the water discharge head is mounted at a higher place. Further, the water discharge pipe 9 and the sensing head pipe 7 are arranged in parallel with each other, for example, and the sensing head 6 and the water discharge head 18 attached to the pipes 7 and 9 are installed relatively close to each other. At times, the pipes 7 and 9 are drawn from the simultaneous opening valve 1 so as to operate at least one each of the sprinkler head 18 and the sensing head 6 and are arranged in the protection area.
[0012]
The end of the sensing head pipe 7 and the end of the water discharge pipe 9 are connected to each other by a connection pipe 20. A second manual activation valve 21 that is normally closed is provided in the middle of the connection pipe 20. Reference numeral 16 denotes a first manual start valve having the same function as the conventional example. The connection pipe 20 is not the end of the pipes 7 and 9 but the middle part of the pipe 7 for the sensing head, for example, between the sensing head 6 and the sensing head 6 and the middle part of the water discharge pipe 9 (between the sprinkler heads 18. May be connected.
[0013]
In such a fire extinguishing facility, in the normal state, the sensing head pipe 7 is filled with water as described in the prior art. When a fire occurs, one or a plurality of sprinkler heads 18 connected to the water discharge pipe 9 and having a low operating temperature, that is, high sensitivity are operated. At this time, since the water discharge pipe 9 is not filled with water, the water discharge is not yet performed. When the ambient temperature gradually increases, the sensing head 6 having a high operating temperature, that is, a low sensitivity, connected to the pipe 7 for the sensing head also operates, and water filled in the pipe 7 is discharged from the head 6. Drained .
[0014]
Then, as in the conventional example, the simultaneous release valve 1 is opened, the fire extinguishing liquid is sent to the water discharge pipe 9, the fire extinguishing liquid is discharged only from the sprinkler head 18 that is already open, and the fire is extinguished. As described above, in the fire extinguishing equipment of the present invention, the closed sprinkler head is attached to the water discharge pipe 9, and in the event of a fire, water is discharged only from the sprinkler head 18 that has been operated. It is possible to discharge water only to prevent water loss.
[0015]
The main effect of this fire extinguishing equipment is that the sprinkler head 18 connected to the water discharge pipe 9 and the sensing head 6 connected to the pipe 7 for the sensing head operate, that is, if at least one of them does not operate, It is not done. Since the sprinkler head protrudes from the ceiling, it is accompanied by a sudden accident caused by a long stick, etc. However, by discharging water only by the operation of the two sprinkler heads 6 and 18, It will be possible to prevent accidental water discharge due to.
[0016]
By the way, the sensitivity of the sprinkler head 18 attached to the water discharge pipe 9 is made higher than that of the sprinkler head 6 attached to the pipe 7 for the sensing head, but conversely, the sprinkler head 6 is made to have higher sensitivity. May be. In this case, the sensing head 6 operates first, and the simultaneous release valve 1 opens. At this time, the fire extinguishing liquid is sent to the water discharge pipe 9, but since no sprinkler head 18 connected to the pipe 9 is open, it is detected that the fire extinguishing liquid has operated via the check section 5. The head 6 is drained gently. Here, the reason why water is not discharged from the head 6 vigorously is that the flow path of the check section 5 is small, and the amount of water discharged (outflowed) from there is a small amount compared to the case where water is actually discharged from the sprinkler head 18. Therefore, even in the case of an outbreak, the damage of water loss is reduced. When the ambient temperature rises and the sprinkler head 18 operates, the fire extinguishing liquid is discharged from the sprinkler head 18 and the fire is extinguished.
[0017]
Next, the case where the fire is extinguished using the second manual start valve 21 will be described. One or more sprinkler heads 18 connected to the water discharge pipe 9 and having a low operating temperature are operated. 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 connection pipe 20 to the water discharge pipe 9. Flowing, already operating and draining from the open sprinkler head 18. Thereafter, 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, when the manual opening is performed, the water filled in the pipe 7 for the sensing head is discharged from the sprinkler head 18 opened by the fire. Can be discharged. In addition, you may provide this 2nd manual starting valve 21 and the connection piping 20 in the installation by which the open type head was connected to the conventional water discharge piping.
[0018]
By providing the second manual start valve 21, it is not necessary to provide the first manual start valve 16. However, for example, when checking the operation of the simultaneous release valve 1, it is not preferable to discharge water to the entire protection area. The first manual start valve 16 may be used.
[0019]
In the first embodiment shown in FIG. 1, the sprinkler heads 18 connected to the water discharge pipe 9 operate faster than the sprinkler heads 6 connected to the sensing head pipe 7, so that the sensitivity of the sprinkler heads 6 and 18 is changed. However, other than that, it is possible to operate the sprinkler head attached to the water discharge pipe 9 first by two methods as shown in FIG.
[0020]
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 make it.
[0021]
In this figure, a falling pipe 23 for positioning the sensing head pipe 7 below the water discharge pipe 9 is provided between the cylinder chamber 3 of the simultaneous release valve 1 and the sensing head pipe 7. Is provided. The sprinkler head 28 connected to the water discharge pipe 9 is attached upward. Compared with 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 near the ceiling 24, and in the event of a fire, the water discharge pipe 9 The sprinkler head 28 operates before the sensing head 6. In general, when a fire breaks out, the hot air flow generated from the fire point rises and flows along the ceiling surface, and heats up from a location close to the ceiling surface. This is because the operation becomes faster.
[0022]
In the present invention, since the closed sprinkler head 18 is attached to the water discharge pipe 9, even when water is rapidly supplied from the primary chamber 2 when the water is filled, the protected area is submerged. If the water is rapidly supplied, the valve body is pushed up and the water discharge pipe 9 is filled with water, so that the water can be discharged as soon as the sprinkler head 18 operates. Further, when water is supplied with the second manual start valve 21 opened, the water flows into the sensing head pipe 7, so that the water filling operation of the sensing head pipe 7 can be performed quickly. In addition, the second manual start valve 21 may be slightly opened during monitoring to allow the fire extinguishing liquid in the sensing head pipe 7 to flow into the water discharge pipe 9. In this way, a sprinkler head as a water discharge head. A water leak test can be performed.
[0023]
In the present embodiment, the case where all the water discharge heads attached to the water discharge pipe 9 are closed sprinkler heads has been described, but for example, an open type head and a closed type head are alternately attached to the water discharge pipe. Even so, local water discharge can be performed as compared with the conventional case. In this case, the open type head and the closed type head may be composed of differently shaped heads. For example, the open type head may be composed of a frame type head, and the closed type head may be composed of a flash type sprinkler head. In other words, the type of head, that is, which is an open type or a closed type, can be seen at a glance from the outside.
[0024]
The water discharge head may be anything as long as it is a closed head, and for example, a foam head with a heat sensitive mechanism may be used. Moreover, although the case where the fire-extinguishing liquid is a foam mixed liquid has been described, of course, water may be used.
[0025]
【The invention's effect】
In a fire extinguishing facility equipped with a simultaneous opening valve, the water discharge head is constituted by a closed sprinkler head, so that it is possible to discharge water only locally, that is, in the vicinity of the location where the fire occurred. Moreover, since the water is discharged only after two sprinkler heads connected to different pipes operate, the reliability as a fire extinguishing equipment can be improved.
[0026]
In addition, in a fire extinguishing system equipped with a simultaneous release valve, a pipe that connects the pipe for the sensing head and the pipe for water discharge, and a valve that is provided in the middle of the pipe and that is normally closed are provided in the event of a fire. At the same time as opening the start valve, the water filled in the pipe for the sensing head can be discharged from the water discharge head of the water discharge pipe, and the fire can be extinguished quickly.
[Brief description of the drawings]
FIG. 1 is a system diagram showing a fire extinguishing facility according to 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 section, 6 Sensing head, 7 Piping for sensing head,
8 Foam head (water discharge head), 9 Water discharge pipe, 11 Automatic alarm valve,
12 pumps, 13 pump control panels, 14 motors, 15 water tanks,
16 first manual start valve, 18 sprinkler head, 20 connecting piping,
21 second manual start valve, 23 downcomer, 24 ceiling,
28 Sprinkler head,

Claims (2)

A simultaneous opening valve having a primary chamber, a secondary chamber and a cylinder chamber, a pipe for a sensing head connected to the cylinder chamber and to which a closed type sensing head is attached, and a head for water discharge connected to the secondary chamber A water discharge pipe to be attached and a pump connected to the primary chamber via a pipe, and when the sensing head is operated, the simultaneous release valve is opened and fire extinguishing liquid is supplied to the water discharge pipe. In fire extinguishing equipment,
A closed sprinkler head having higher sensitivity than the sensing head is provided in the water discharge pipe;
A fire extinguishing system, wherein when the closed sprinkler head is operated and the sensing head is operated, water is discharged from the operated closed sprinkler head. A simultaneous opening valve having a primary chamber, a secondary chamber and a cylinder chamber, a pipe for a sensing head connected to the cylinder chamber and to which a closed type sensing head is attached, and a head for water discharge connected to the secondary chamber A water discharge pipe to be attached and a pump connected to the primary chamber via a pipe, and when the sensing head is operated, the simultaneous release valve is opened and fire extinguishing liquid is supplied to the water discharge pipe. In fire extinguishing equipment,
A closed-type sprinkler head provided in the water discharge pipe;
A pipe connecting the pipe for the sensing head and the pipe for water discharge;
A manual start valve provided in the middle of the pipe and normally closed;
When the manual start valve is opened, the water filled in the pipe for the sensing head flows into the water discharge pipe, and the simultaneous open valve is opened.

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