JP4380079B2 - Fire extinguishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drainage fire extinguishing equipment, and forms a curtain with water at an opening to block a flame.
[0002]
[Prior art]
Conventionally, in a building such as a national treasure or an important cultural property, a drainer facility is provided to protect it from a fire. In addition to fire doors and fire shutters, in addition to fire doors and fire shutters, drainage equipment has been installed to prevent internal fire spread.
[0003]
An example of such a drainage facility is the invention disclosed in Japanese Patent Laid-Open No. 7-155398. This conventional example will be described with reference to FIG. In FIG. 4, a drain head 6 and a fire detector 8 are provided on the ceiling surface 4 a of the room 4. When a fire occurs, the fire detector 8 detects the fire and outputs a fire signal to the control panel 10. Upon receiving the fire signal, the control panel 10 determines the location of the fire from the address information of the fire signal.
[0004]
Then, an open signal is output to the electromagnetic valve 14 in order to open the simultaneous open valve 12 corresponding to the fire occurrence location. When the simultaneous release valve 12 is opened, the inside of the pipe is depressurized, the pressure drop is detected by a pressure drop switch (not shown), and an activation signal is output from the control panel 10 to the pressurized water pump 16.
[0005]
When the pump 16 is activated, water in a tank (not shown) is pumped and supplied to the drain head 6 through the simultaneous release valve 12. Then, water spraying is started from the drainage head 6, a water curtain is formed, a fire that tries to spread is shut off, and the spread of fire is prevented. The simultaneous release valve 12 can be opened by a manual valve 18 in addition to the electromagnetic valve 14.
[0006]
[Problems to be solved by the invention]
As described above, since the drainage equipment is configured to be activated by the fire signal of the fire detector, the fire detector is required, and the installation work of the signal line must be performed at the time of construction.
[0007]
In addition, when there are a plurality of sections to be discharged, it is necessary to install a plurality of fire detectors and a plurality of simultaneous open valves and solenoid valves, resulting in a problem that the cost on the equipment is increased.
[0008]
In addition, the drainer facility is a facility that prevents the spread of fire, and if necessary, a sprinkler fire extinguishing facility may be provided. In this case, the pressurized water supply pumps were installed separately.
[0009]
[Means for Solving the Problems]
The present invention was made to solve the above problems, and is connected to the secondary side of the thermal release valve, which is provided by branching from the primary side pipe and opened by receiving heat in the event of a fire. The drainer fire extinguishing equipment includes a secondary side pipe and a plurality of open-type heads provided in the secondary side pipe in a line so as to form a water curtain by discharging water at the same time. The protection area is divided into a plurality of water discharge sections having a predetermined length, and each of the water discharge sections is provided with the heat sensitive release valve and a pair of check valves. The secondary pipe is connected to the pair of check valves and the secondary pipe is provided with the pair of check valves, and the pair of reverse valves provided between the branch portions of the secondary pipe connected to the thermal release valve. At least one or more open-type heads are provided between the stop valves, When the pair of check valves are installed in different directions so that water flows toward an open head provided between the pair of check valves, and when the heat-sensitive release valve in a water discharge section opens, The check valve regulates the flow of water to the adjacent water discharge section .
[0010]
The secondary pipe is provided with a pair of check valves for each water discharge section, and at least one or more open type heads are provided between the pair of check valves. The pair of check valves are installed in different directions so as to flow toward the front .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1
FIG. 1 is a system diagram showing a drainer fire extinguishing facility as a fire extinguishing facility of the present invention. In addition to being installed outside the building, this drainer fire extinguishing equipment is installed inside the building, for example, between the theater stage and the audience seats. This drainer fire extinguishing system forms a fire prevention zone by discharging water and creating a water curtain, and protects an object from flying sparks and radiant heat. In addition, it can also be provided in the opening near the stairs and used as a substitute for a fire shutter or fire door.
[0012]
In FIG. 1, reference numeral 1 denotes a plurality of open-type heads connected to the secondary side pipe 2. The open type head 1 is connected to the secondary side pipe 2 in a line shape, and at the time of water discharge, water is discharged all at once to form a water curtain. The open type heads 1 are installed, for example, at intervals of 2.5 m in accordance with the provisions of the Fire Service Act. When five heads 1 are installed as shown in the figure, a range of 12.5 m can be protected. . At this time, the open-type head 1 is provided in a line along the upper frame of the opening of the protection area, and discharges about 20 L per minute at a pressure of 0.1 MPa.
[0013]
3 is a heat-sensitive release valve which is opened by receiving heat in the event of a fire. An example of the heat-sensitive release valve 3 is disclosed in Japanese Patent Application Laid-Open No. 10-268694, which has a heat-sensitive portion similar to that of a sprinkler head. On the basis of this heat-sensitive release valve 3, the pipe on the secondary side is called the secondary side pipe 2, and the pipe on the primary side is called the primary side pipe 4.
[0014]
Reference numeral 4 denotes a primary side pipe, which is branched from the primary side pipe 4 and provided with a plurality of heat release valves 3. The secondary sides of the plurality of thermal release valves 3 are connected by the same secondary pipe 2. On the base end side of the primary side pipe 4, a pressurized water supply facility including a pump and a water tank, a pressure switch for detecting pressure reduction in the pipe, and the like are provided as in the prior art. The primary side pipe 4 is always filled with water, and the primary side pipe 4 is watered up to the primary side.
[0015]
10 is a control valve that is normally open and is provided on the base end side of the primary side pipe 4 as required. Water discharge can be stopped by closing the control valve 10 after water discharge in the event of a fire.
[0016]
In such a drainer fire extinguishing facility, when a fire occurs, the heat-sensitive release valve 3 receives the heat of the fire and opens. For this reason, the water that has reached the primary side of the heat-sensitive release valve 3 is discharged from the open head 1. Moreover, the pump which is not illustrated starts with the pressure_reduction | reduced_pressure of the primary side piping 4, and water is supplied from a water tank.
[0017]
At this time, since a plurality of open-type heads 1 are connected to the secondary side pipe 2, water is discharged from the open-type head over the entire wide protection range, creating a water curtain and blocking the flame. Form a compartment.
[0018]
In this facility, since a plurality of the thermal release valves 3 are provided branching from the primary side piping, if any one of the thermal release valves 3 is opened, the secondary side of the thermal release valve 3 is provided. Since it is possible to discharge water from all of a plurality of open-type heads 1, it is possible to protect a wide range, and it is not necessary to provide a fire detector for activation.
[0019]
Embodiment 2
FIG. 2 is a system diagram showing a drainer fire extinguishing facility as a fire extinguishing facility of the present invention. In FIG. 2, the same parts as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. The second embodiment is different in that a plurality of check valves 6 are interposed in the secondary pipe 2.
[0020]
That is, in FIG. 2, 6 </ b> A to 6 </ b> F are check valves provided in the secondary side pipe 2. These check valves 6 </ b> A to 6 </ b> F flow water only in the direction of the arrow, and regulate the flow of water from the opposite direction.
[0021]
The check valves 6 </ b> A to 6 </ b> F are provided in pairs on the secondary side pipe 2 between the branch portions to which the heat-sensitive release valve 3 is connected. At least one or more open-type heads 1 are provided between the pair of check valves, for example, between 6A and 6B, that is, in the direction in which water flows from the check valve. The pair of check valves 6A and 6B are installed in different directions, that is, water flowing from one check valve 6A is directed to the other check valve 6B. Even if water flows from the side, water can be discharged from the head 1. In other words, the check valves 6A and 6B are installed in directions that flow from different directions.
[0022]
In such an installation, a case will be described in which the heat-sensitive release valve indicated by reference numeral 3B is opened by receiving heat during a fire. When the heat-sensitive release valve 3B is opened, water flows through the check valve 6B to the region on the left side of the release valve 3B, and water is discharged from the two open-type heads 1 ahead. At this time, since there is the check valve 6A, water is not discharged from the open head 1 on the left side of the heat-sensitive release valve 3A.
[0023]
In addition, water flows through the check valve 6C to the area on the right side of the open valve 3B, and water is discharged from the three open heads 1 ahead. At this time, since there is the check valve 6D, water is not discharged from the open head 1 on the right side of the heat-sensitive release valve 3C.
[0024]
Thus, as in the case of the first embodiment, when one heat-sensitive release valve 3 is opened, water is discharged from the five open-type heads 1 to form a water curtain having a predetermined width, and a fire prevention section that blocks the flame. Can be formed.
[0025]
In this embodiment, since the flow direction of the water flowing in the secondary side pipe 2 can be regulated by providing the check valves 6 </ b> A to 6 </ b> F in the secondary side pipe 2, the section to be discharged for each heat sensitive release valve 3. Can be set. A pair of check valves, for example, 6A and 6B, are installed in different directions, that is, facing each other in the direction in which water flows, and at least one or more open-type heads are provided between the check valves 6A and 6B. 1 is provided, it is possible to discharge water from the open type head 1 located between the pair of check valves 6A and 6B, regardless of which of the adjacent heat sensitive release valves, for example, 3A and 3B is opened. Thereby, it is possible to form an effective water curtain by overlapping a part of adjacent water discharge sections.
[0026]
Embodiment 3
FIG. 3 is a system diagram showing the fire extinguishing equipment of the present invention. In FIG. 3, the same parts as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. The third embodiment is different from the first embodiment in that the sprinkler fire extinguishing equipment is combined with the drain fire extinguishing equipment of the first embodiment.
[0027]
That is, in FIG. 3, 7 is a closed type sprinkler head, and a plurality of sprinkler pipes 8 are connected. On the base end side of the sprinkler pipe 8, a running water detection device 9 is provided, and on the primary side of the running water detection device 9, pressure reduction water in a pump and a water tank and pressure reduction in the pipe are detected as in the prior art. A pressure switch or the like is provided.
[0028]
The primary side of the heat-sensitive release valve 3 is connected to the distal end side of the sprinkler pipe 8 via the primary side pipe 4. In addition, the sprinkler pipe 8 and the primary side pipe 4 are always filled with water, and the water is supplied to the primary side of the heat-sensitive release valve 3. In terms of equipment, the sprinkler head 7 is provided in a room, and the open head 1 is provided in an opening (inlet) in the room. By installing in this way, fire that has occurred indoors can be extinguished by the sprinkler head 7, and the fire can spread to other places (rooms) by discharging water near the entrance with the open head 1. Can be blocked.
[0029]
In such a facility, when one heat-sensitive release valve 3 is opened by receiving heat at the time of a fire, all (five) open-type heads connected to the secondary side pipe 2 as in the case of the first embodiment. Water is discharged from 1 to form a water curtain with a predetermined width to form a fire prevention section that blocks the flame.
[0030]
When the sprinkler head 7 is opened, water is discharged only from the sprinkler head 7 to extinguish the fire. Regardless of which one of the heat-sensitive release valve 3 and the sprinkler head 7 is opened, the flowing water detection device 9 detects the flow of water and outputs a flowing water signal to a control panel (not shown).
[0031]
In this embodiment, since the sprinkler pipe 8 to which the sprinkler head 7 is connected is provided on the primary side of the heat-sensitive release valve 3, the pressurized water supply device used for the sprinkler fire extinguishing equipment can be used also as the drainage equipment. It becomes. In addition, you may make it incorporate the structure of Embodiment 1 or 2 in this embodiment.
[0032]
In addition, as a method of using both the sprinkler fire extinguishing equipment and the pressurized water supply equipment of the drainage equipment, there is the following method. That is, an open type head is connected to the secondary side pipe, a heat release valve is provided branching from the secondary side pipe, a primary side pipe is provided on the primary side of the heat release valve, and the base end of the primary side pipe is provided. In the fire extinguishing equipment provided with the pressurized water supply equipment on the side, the sprinkler pipe to which the sprinkler head is connected is connected to the primary side pipe. In this case, the first flowing water detection device is provided on the base end side of the sprinkler piping, and the primary side piping is connected to the sprinkler piping after passing through the second flowing water detection device. In this way, it is possible to identify in which equipment the water has been discharged.
[0033]
【The invention's effect】
In the present invention, a plurality of open-type heads are connected to the secondary side pipe, and further, a plurality of heat release valves are provided by branching from the primary side pipe. Water is discharged from the mold head to form a water curtain and form a fire prevention section that blocks the flame. For this reason, the fire detector for starting becomes unnecessary. In addition, since a plurality of heat-sensitive release valves are provided, it is possible to discharge water from all of the plurality of open heads if any one of them is opened, so that a wide range can be protected.
[0034]
Moreover, since the flow direction of the water flowing in the secondary side pipe can be regulated by providing the check valve in the secondary side pipe, it is possible to set a section to be discharged for each heat sensitive release valve.
[0035]
The secondary pipe is provided with a pair of check valves installed in different directions, and at least one open type head is provided between the pair of check valves. Regardless of which one of the release valves is opened, water can be discharged from the open head between the pair of check valves. Thereby, it is possible to form an effective water curtain by overlapping a part of adjacent water discharge sections.
[Brief description of the drawings]
FIG. 1 is a system diagram showing a drainer facility according to a first embodiment of the present invention.
FIG. 2 is a system diagram showing a drainer facility according to a second embodiment of the present invention.
FIG. 3 is a system diagram illustrating a drainage facility according to a third embodiment of the present invention.
FIG. 4 is a system diagram showing a conventional drainer facility.
[Explanation of symbols]
1 Open type head, 2 Secondary pipe, 3A-3D Thermal release valve,
4 Primary piping, 6A to 6F check valve, 7 Sprinkler head,
8 Sprinkler piping, 9 Flowing water detection device, 10 Control valve,

Claims (1)

A heat release valve that branches off from the primary side pipe and opens by receiving heat from a fire, a secondary side pipe connected to the secondary side of the heat release valve, and a water curtain A drainer fire extinguishing equipment comprising a plurality of open-type heads provided in the secondary pipe in a line shape so as to form
Divide the protected area into a number of drainage sections of a certain length,
For each water discharge section, the heat-sensitive release valve and a pair of check valves are provided, and the secondary sides of the plurality of heat-sensitive release valves are respectively connected by the secondary pipes, and the pair of check valves are Provided on the secondary side piping,
In the secondary pipe, at least one or more open-type heads are provided between the pair of check valves provided between the branch portions to which the heat-sensitive release valve is connected,
The pair of check valves are installed in different directions so that water flows toward the open head provided between the pair of check valves,
The fire extinguishing equipment , wherein when the heat-sensitive release valve of a certain water discharge section is opened, the check valve restricts the flow of water to an adjacent water discharge section .

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