JP3918995B2 - Fire extinguishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drainage facility as a fire extinguishing facility.
[0002]
[Prior art]
The conventional drainage equipment is composed of a watering head, a sensing head, and a simultaneous opening valve. In this conventional equipment, the simultaneous opening valve is opened by the operation of the sensing head, and water is discharged from the watering head.
[0003]
[Problems to be solved by the invention]
Since this conventional drainer equipment can control a large flow rate, it is effective in protecting a large opening or the like. However, since a simultaneous release valve is used, two piping systems are required: a water discharge pipe with a watering head and a sensing pipe with a sensing head, which complicates piping installation work. .
[0004]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and in a fire extinguishing facility having a sprinkler pipe to which a sprinkler head is connected, a thermal opening that branches off from the sprinkler pipe and is opened by receiving heat during a fire. Providing a drainage pipe having a valve, connecting an open type head to the secondary side of the heat sensitive open valve, and installing the open type head in the vicinity of the opening of the protection area;
When the heat-sensitive release valve is opened, water is discharged from the open-type head so as to create a water curtain that blocks the flame.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a system diagram showing a drainer facility as a fire extinguishing facility of the present invention. This drainer facility is intended to suppress the spread of fire spread to a relatively small area such as windows and openings near stairs. Water is discharged and a water curtain is formed to form a fire prevention compartment. Blocks incoming sparks and radiant heat.
[0006]
In FIG. 1, reference numeral 1 denotes a plurality of open-type heads connected to the pipe 2. The open type head 1 is connected to the 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 head 1 is installed, for example, at intervals of 2.5 m in accordance with the provisions of the Fire Service Act, and is installed in the vicinity of the opening 4 in the protection area. As this open-type head 1, for example, a head that discharges water at a pressure of 0.1 to 1 MPa at a rate of 20 L or more per minute per head is used.
[0007]
Reference numeral 5 denotes a heat-sensitive release valve which is opened by receiving heat in the event of a fire. The heat-sensitive release valve 5 is provided in a recess 15 that is recessed from the ceiling surface, and the heat-sensitive release valve 5 is provided so as to hardly protrude from the ceiling surface. By adopting such an arrangement method, exposure from the ceiling surface is suppressed and the aesthetic appearance is not impaired. A surface having an opening such as a wire mesh may be installed on the surface of the concave portion 15, which is more aesthetically pleasing and causes no problem because a hot air flow in a fire passes therethrough. An example of the heat-sensitive release valve 5 is disclosed in Japanese Patent Application Laid-Open No. 10-268694, which has a heat-sensitive part similar to a sprinkler head. An open type head 1 is connected to the secondary side of the heat-sensitive release valve 5 through a pipe 2. The open head 1 may also be provided in a recess recessed from the ceiling surface.
[0008]
By the way, it is possible to extend a sprinkler pipe 6 to be described later and install a sprinkler head 7 near the opening 4 to protect the vicinity of the opening 4, but in the case of such an installation method, the opening 4 If there is no fire in the immediate vicinity, water is not discharged from the sprinkler head 1 to the vicinity of the opening 4, so that the vicinity of the opening 4 cannot be sufficiently protected.
[0009]
Therefore, in the present embodiment, the thermal release valve 5 is installed at a certain distance from the opening 4, and a plurality of open-type heads 1 are installed between the thermal release valve 5 and the opening 4. The distance between the opening valve 5 and the opening 4 is protected. In the case of such an installation method, when a fire progresses from the left side to the right side in the figure, the fire can be caught by the heat release valve 5 before the fire reaches the opening 4. It is possible to sufficiently protect the vicinity of 4.
[0010]
As an installation method of the open-type head 1, it is possible to install it side by side along the opening 4, or it may be installed across the opening 4.
[0011]
Reference numeral 6 denotes a sprinkler pipe to which a sprinkler head 7 is connected. Reference numeral 8 denotes a drainage pipe that is branched from the sprinkler pipe 6. The drain pipe 8 is configured as a pipe having the heat-sensitive release valve 5.
[0012]
A common pressurized water supply device 10 is provided on the base end side of the sprinkler pipe 6 and the drainer pipe 8, and an alarm valve 12 is provided in the middle of the pipe 11. The pressurized water supply apparatus 10 is composed of a water tank and a pump, and the pipe 11, the sprinkler pipe 6 and the drainer pipe 8 are always in a state where water is pressurized and charged.
[0013]
A case where a fire occurs in a protected area where such a drainage facility is installed will be described. For example, if a fire has progressed from the left side to the vicinity of the opening 4 in the figure, first, the heat-sensitive release valve 5 is opened by receiving the heat of the fire. For this reason, water that has reached the primary side of the heat-sensitive release valve 5 is discharged from the open head 1. Then, the pressure in the drain pipe 8 and the pipe 11 is reduced, and the alarm valve 12 outputs a running water signal to a control panel (not shown). In addition, the pressurized water supply apparatus 10 is activated in accordance with the pressure reduction in the pipe 11, and supplies water from the water tank to the open head 1 through the drain pipe 8. At this time, since a plurality of open-type heads 1 are connected to the pipe 2, water is discharged from the open-type head 1 over the entire opening 4, thereby forming a water curtain and forming a fire prevention section that blocks the flame. . Thereby, the vicinity of the opening 4 can be protected from fire, and when the inside of the opening 4 (right side in the figure) is used as an evacuation passage, the evacuation passage can be protected from fire.
[0014]
In this facility, it is not necessary to separately install the water discharge pipe and the sensing pipe, so that the pipe can be simplified and the pipe laying operation becomes easy. Moreover, since the pipe is branched from the sprinkler pipe 6 and the pressurizing apparatus 10 is shared by the sprinkler equipment and the drainage equipment, the cost of the equipment can be reduced.
[0015]
In the fire extinguishing equipment of the present embodiment described above, for example, the sprinkler head 7 is provided in the room, and the open head 1 is provided in the opening (entrance / exit) of the room. By installing in this way, the fire that has occurred in the room can be extinguished by the sprinkler head 7, and the fire can be discharged to another place (room, staircase) by discharging water near the entrance using the open head 1. Can be prevented from spreading.
[0016]
It is also possible to manually activate such fire extinguishing equipment. In this case, a pipe branched from the sprinkler pipe 6 is provided, and a manually activated valve that is normally closed is provided in the pipe. Then, the secondary side of the start valve may be connected to the pipe to which the open type head 1 is connected, that is, the secondary side of the heat sensitive release valve 5.
[0017]
【The invention's effect】
Since the present invention is configured as described above, it is possible to construct a drainage facility that is inexpensive and simplified in piping, and can be particularly installed in a spot having a partial opening.
[Brief description of the drawings]
FIG. 1 is a system diagram showing a drainer facility according to a first embodiment of the present invention.
[Explanation of symbols]
1 Open-type head, 2 Piping, 4 Opening, 5 Thermal release valve,
6 Sprinkler piping, 7 Sprinkler head, 8 Drencher piping,
10 Pressurized water supply device, 11 Piping, 12 Alarm valve, 15 Recess,

Claims (3)

In fire extinguishing equipment having sprinkler piping to which a sprinkler head is connected,
Branching from the sprinkler piping, provided with a drainage piping having a thermal release valve that opens upon receiving heat in the event of a fire,
Connect the open head to the secondary side of the heat-sensitive release valve, installed the open head in the vicinity of the opening of the protection zone,
A fire extinguishing system that discharges water so as to create a water curtain that blocks flame from the open-type head when the heat-sensitive release valve is opened . The sprinkler piping and the base end side of Dorencha piping, fire extinguishing equipment according to claim 1, wherein the common pressurized pumping water device is provided. The open type head is connected to a pipe in a line shape, and a plurality of the open type heads are installed between the heat-sensitive open valve and the opening. Fire extinguishing equipment.

Images