JP3608322B2 - Sprinkler equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sprinkler facility in a building fire extinguishing facility and a construction method thereof.
[0002]
[Prior art]
As shown in FIGS. 8 and 9, the water supply pipe and sprinkler head in the sprinkler equipment are generally connected to a water supply main pipe (not shown) connected to a water flow detector and the like, and are installed on the ceiling of each floor. A plurality of branch pipes 2 a, 2 b, 2 c are connected to the main pipe 1, and a falling pipe 3 is provided in each of the branch pipes 2 a to 2 c, and a sprinkler head 4 is exposed so that a part thereof is exposed from the ceiling 11. Is connected. In this case, each sprinkler head 4 is installed at a related position so that a predetermined amount of fire-extinguishing water can be discharged in a predetermined range when a fire occurs.
[0003]
Next, an example of construction in the case where the water supply pipe and the sprinkler head as described above are installed on the back of the ceiling will be described.
First, the branch pipe 1 is pulled up and suspended and fixed at a predetermined position by a hanging metal fitting 13 attached to the slab 10. Next, the branch pipes 2a to 2c are connected to the main branch pipe 1, and further the down pipe 3 is connected to the branch pipes 2a to 2c (hereinafter, the main pipe 1, the branch pipes 2a to 2c and the down pipe 3 are combined). Sometimes called a water supply pipe).
[0004]
Next, the sprinkler head 4 is screwed into the downcomer 3 and connected thereto, and a protective cap (not shown) having a protrusion at the center of the lower surface is attached to the sprinkler head 4. Next, the ceiling material is pressed against the protective cap from the bottom to make a mark due to the protrusion on the upper surface of the ceiling material, and the insertion hole 12 of the sprinkler head 4 is penetrated around this mark. And if the ceiling material is stretched according to the index provided on the outer periphery of the protective cap, the lower part of the sprinkler head 4 protrudes from the insertion hole 12, so that the insertion hole 12 is closed from the lower surface of the ceiling 11. A seal plate (not shown) is attached around. Remove protective cap when all work is done.
[0005]
[Problems to be solved by the invention]
In recent years, buildings, particularly offices, stores, etc., sometimes change room partitions or change the height by changing the ceiling according to the wishes of tenants. In such cases, or when there are obstacles such as partitions, shelves, or lockers under the sprinkler head, the position of the sprinkler head can be shifted by removing the ceiling or changing the position of the falling pipe when re-installing. It is necessary and when the installation height of the ceiling changes, the length of the downcomer must be changed.
For this reason, it is necessary to reconstruct the sprinkler facility along with the replacement of the ceiling, which inevitably increases the construction cost and delays in moving in.
[0006]
The present invention has been made to solve the above-described problems. The sprinkler head is connected to a water supply pipe through a flexible pipe, and the sprinkler is temporarily installed and maintained in a monitoring state before the ceiling is installed. It is an object of the present invention to obtain a sprinkler facility and its construction method that eliminates the need for changing the ceiling or changing the water supply pipe by moving the sprinkler head to a predetermined position during installation.
[0007]
[Means for Solving the Problems]
The sprinkler equipment according to the present invention includes a water supply pipe connected to a water supply main pipe and fixed below the slab, a header connected to the water supply pipe, a header connected to the header, and a sprinkler head connected to a tip portion. In the sprinkler equipment provided with the flexible pipe, before the ceiling is stretched, a fixture for attaching the sprinkler head to the slab and a suspension for suspending the flexible pipe on the slab are provided, and when the ceiling is stretched, The hanging tool is configured to be extendable in the vertical direction so that the sprinkler head can be lowered to the ceiling side .
[0008]
Also, the above hanger are those having a holding portion for detachably holding the flexible tube.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 are explanatory views of a sprinkler facility and its construction method according to the present invention. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the conventional method demonstrated in FIG.8 and FIG.9, and description is abbreviate | omitted.
Reference numeral 15 denotes a header having a plurality of connection ports 16, and is connected to a downcomer 3 provided in the main branch 1 as shown in FIG. 3. The header 15 may be connected to the branch pipe 2 or the leading end of the branch pipe 1 provided on the branch pipe 2 or the main pipe 1 that does not have the down pipe 3. Reference numeral 17 denotes a flexible pipe having one end connected to the connection port 16 of the header 15. The other end is connected to a connection fitting 19 such as an elbow via a joint 18 as shown in FIG. A sprinkler head 4 is screwed to 19.
[0011]
Reference numeral 20 denotes a second hanging metal fitting that can be expanded and contracted, for example, made of a turnbuckle. As shown in FIG. 5, the turnbuckle 20 has an attachment portion 22 to the slab 10 at one end, a screw rod 21 provided with a right-hand thread, and a holding portion 24 that holds the flexible tube 17 at one end. The screw rod 23 is provided with a left-hand thread, and the right and left female screws are provided on both sides, and the elliptical ring-shaped adjustment portion 25 into which the screw rods 21 and 23 are respectively screwed. The part 25 can be expanded and contracted by rotating to the right or left. In addition, you may use what the attaching part 22 of this hanging bracket 20 is directly embedded in the slab 10. FIG.
[0012]
For example, as shown in FIG. 5B, the holding portion 24 includes a cylindrical holding ring 26 having an opening 27 and a lid plate 28 that opens and closes the opening 27, and opens and holds the lid plate 28. The flexible tube 17 is inserted into the tube 26 and the lid plate 28 is closed.
5C, a substantially S-shaped holding portion 24 having a concave accommodating portion 30 is provided at the lower end portion of the screw rod 23, and the flexible tube 17 is accommodated in the accommodating portion 30. Is.
In addition, the 2nd suspension metal fitting 20 and the holding part 24 are not limited to this, What is necessary is just to be able to expand-contract up and down and to hold | maintain the flexible tube 17 so that attachment or detachment is possible. Further, a fixture 31 described later may be provided in place of the holding portion 24, and the flexible tube 17 may be fixed to the fixture 31.
[0013]
Reference numeral 31 denotes a fixture for fixing the sprinkler head 4 to the slab 10. For example, as shown in FIG. 6 (a), a substantially J-shaped fixture 32 having a mounting portion 33 for the slab 10 and a screw 34 are used. Thus, the joint 18 or the connection fitting 19 is inserted into the concave portion of the fixing fitting 32 and fixed with the screw 34.
6B has a concave portion corresponding to the outer shape of the substantially L-shaped first fixing bracket 35 having the attachment portion 36 to the slab 10, the joint 18, or the connection bracket 19. 2, the joint 18 or the connection bracket 19 is held between the two fixing brackets 35 and 37, and fixed with the screws 34.
In addition, this fixing tool 31 is not limited to the above, What is necessary is just to be able to detachably fix the joint 18 or the connection fitting 19. Further, instead of the holding portion 24 of the second hanging bracket 20, a fitting provided with the fixture 31 may be used to fix the joint 18 or the connecting bracket 19. In this case, since the sprinkler head 4 can be lowered as it is after finishing the ceiling 11, the fixture 31 is not wasted.
[0014]
40 (FIG. 2) is a fixing device for fixing the sprinkler head 4 to the ceiling 11. For example, as shown in FIG. 7, the horizontal piece is provided with a hole 42 through which the connection fitting 19 can be inserted. The fixing metal 41 and a screw 43 screwed into a vertical piece, and the fixing metal 41 is fixed to the two C-shaped channels 45 provided on the back of the ceiling so as to be movable back and forth. The connecting fitting 19 is inserted into the hole 42 and the screw 43 is tightened to fix the connecting fitting 19 and thus the sprinkler head 4 at a predetermined position. The fixing device 40 may use other means as appropriate.
[0015]
Next, an example of the construction of the sprinkler facility composed of each part as described above will be described.
A. Work before extending the ceiling (1) The main branch pipe 1 is pulled up and fixed to the hanging metal fitting 13 attached to the slab 10 in advance.
(2) The header 15 is connected to the falling pipe 3 provided in the main pipe 1 or the branch pipe 2, and one end of the flexible pipe 17 is connected to the connection port 16 thereof. In addition, when there exists the connection port 16 which does not connect the flexible pipe | tube 17, it obstruct | occludes by closing.
[0016]
(3) Next, the connection fitting 19 is connected to the joint 18 provided at the other end of the flexible tube 17. Note that the connection fitting 19 may be connected to the joint 18 in advance. At this time, the sprinkler head 4 may be connected to the connection fitting 19 and a protective cap may be attached.
(4) Next, the flexible tube 17 is held by the holding portion 24 of the second hanging bracket 20 attached to the slab 10 in advance.
[0017]
(5) Next, the joint 18 or the connection fitting 19 is inserted into the concave portion of the fixture 32 of the fixture 31 attached to the slab 10 corresponding to the position where the monitoring area can be protected beforehand, and the screw 34 is tightened to fix. . At this time, the sprinkler head 4 is in a substantially vertical state, and its tip is located within approximately 30 cm from the lower surface of the slab 10. The sprinkler head 4 may be attached to the connection fitting 19 after the joint 18 or the connection fitting 19 is fixed to the fixing fitting 31. In this state, the protective cap is removed from the sprinkler head 4.
With the above, the construction work of the sprinkler facility before installing the ceiling is completed (state of FIG. 1).
[0018]
In this state, the ceiling is not stretched, but the sprinkler facility is in a monitoring state. For this reason, when a fire occurs in the room, the sprinkler head 4 operates by sensing this, and can extinguish the fire by discharging the fire-extinguishing water. At this time, since the sprinkler head 4 is in a position close to the slab 10 (within approximately 30 cm from the slab 10), the thermal air flow generated by the fire stays below the slab, so that the heat can be easily detected. Since the connection fitting 19 is fixed to the fixture 31, the sprinkler head 4 is not swung around by the reaction force of the water discharge at the time of water discharge.
[0019]
B. Work when extending the ceiling (1) When the tenant occupying the room completes room partitions and equipment layout, and the ceiling height is determined, the C-shaped channel for the contractor to extend the ceiling 11 Install 45 etc.
[0020]
(2) Next, the second suspension fitting 20 is operated to hold each flexible pipe 17 at a predetermined height position, and the joint 18 or the joint fitting 19 is removed from the fixture 31 to set a predetermined monitoring area. The sprinkler head 4 is moved to a position where it can be effectively protected, and the sprinkler head 4 is temporarily fixed by a fixing device 40 provided in the C-shaped channel 45 or the like. At this time, a protective cap is attached to the sprinkler head 4. Further, when the hanging bracket 20 is not extendable or depending on the mounting height of the sprinkler head 4, a new hanging bracket may be installed.
[0021]
(3) A ceiling member provided with an insertion hole 12 corresponding to a position where the sprinkler head 4 is temporarily fixed is attached using a C-shaped channel 45 and the ceiling 11 is installed. At this time, since a part of the sprinkler head 4 protrudes downward from the insertion hole 12, the sprinkler head 4 is fixed by the fixing device 40 in this state. If the sprinkler head 4 is not positioned at the center of the insertion hole 12 but is displaced, the fixing device 40 is moved to the left or right or front and back, and then fixed and then fixed.
Finally, if a seal plate is attached to the periphery of the sprinkler head 4 from under the ceiling 11 and the protective cap is removed, all the construction of the sprinkler equipment is completed (state shown in FIG. 2).
[0022]
Although the construction example of the present invention has been described above, the present invention is not limited to this, and can be appropriately changed according to the situation of the construction site.
[0023]
According to the present invention configured as described above, since the sprinkler head 4 is connected by the flexible pipe 17, the installation location of the sprinkler head 4 can be easily changed in accordance with the partition change or the like.
In addition, it is desirable to close at least one of the connection ports 16 of the header 15 as a spare port, and in this way, when a sprinkler head 4 needs to be added due to a partition change or the like, a countermeasure is taken. It's easy to do.
[0024]
In addition, when a fire occurs when the ceiling is not completed as shown in FIG. 1, the fire extinguishing equipment (pipe, etc.) is likely to receive the heat of the fire only in an area where the ceiling is not provided. Therefore, the seal member provided between the pipe and the joint or between the joint and the joint is preferably not a resin type but a metal type.
[0025]
Furthermore, a universal joint may be provided between the header 15 and the main pipe 1 so that the distance between the header 15 and the slab 10 can be adjusted. Specifically, when the sprinkler head 4 is incompletely attached to the slab 10, the header 15 is installed at the same height as the main branch 1 or on the slab 10 side of the main pipe 1, and the sprinkler head 4 is installed on the ceiling. Upon completion of attachment to the header 11, the header 15 is positioned below the branch pipe 2 as shown in FIG.
In this way, even if a fire occurs in the state of FIG. 1, the header 15 does not have to be a watering obstacle.
[0026]
【The invention's effect】
The sprinkler equipment according to the present invention includes a water supply pipe connected to a water supply main pipe and fixed below the slab, a header connected to the water supply pipe, a header connected to the header, and a sprinkler head connected to a tip portion. In the sprinkler equipment provided with the flexible pipe, before the ceiling is stretched, a fixture for attaching the sprinkler head to the slab and a suspension for suspending the flexible pipe on the slab are provided, and when the ceiling is stretched, Since the hanging tool is configured to be able to extend and contract in the vertical direction so that the sprinkler head can be lowered to the ceiling side , the following effects can be obtained.
[0027]
Even if the height of the partition or ceiling is changed according to the tenant's request or a large obstacle is installed in the room, there is no need to peel off or replace the existing ceiling or change the position and length of the water supply pipe The sprinkler head can be easily installed at a position that can completely protect the monitoring area.
Moreover, since it is possible to easily cope with the change of the partition, it is possible to prevent an increase in construction costs and a delay in moving in.
Furthermore, the fire extinguishing equipment is in a monitoring state even when the ceiling is not installed and tenants are not occupying it. If a fire breaks out, the sprinkler head senses this and activates the fire extinguishing water. The water is discharged and extinguished, so it is extremely effective for disaster prevention.
[0029]
Since the hanger for suspending the flexible tube on the slab is configured to be extendable in the vertical direction, the sprinkler head can be easily moved.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a construction method according to the present invention.
FIG. 2 is an explanatory diagram of a construction method according to the present invention.
FIG. 3 is an explanatory diagram showing an example of a connection state of a flexible pipe.
FIG. 4 is an explanatory diagram showing an example of a connection state between a flexible pipe and a sprinkler head.
FIG. 5 is an explanatory view showing an example of a second hanging tool.
FIG. 6 is an explanatory view showing an example of a fixture.
FIG. 7 is an explanatory diagram showing an example of a fixing device.
FIG. 8 is an explanatory view showing an example of conventional sprinkler equipment.
FIG. 9 is an explanatory view showing an example of conventional sprinkler equipment.
[Explanation of symbols]
1 branch pipe 2 branch pipe 3 riser pipe 4 sprinkler head 10 slab 11 ceiling 12 sprinkler head insertion hole 13 lifting tool 15 header 17 flexible pipe 18 joint 19 connecting bracket 20 second lifting tool 31 fixing tool 40 mounting device

Claims (2)

A sprinkler comprising a water supply pipe connected to the water supply main pipe and fixed below the slab, a header connected to the water supply pipe, and a flexible pipe connected to the header and having a sprinkler head connected to the tip. In equipment,
Before extending the ceiling, a fixture for attaching the sprinkler head to the slab, and a suspension for suspending the flexible tube to the slab,
The sprinkler equipment is characterized in that the hanging tool is configured to be vertically extendable so that the sprinkler head can be lowered toward the ceiling when the ceiling is stretched . The sprinkler facility according to claim 1, wherein the hanger includes a holding portion that detachably holds the flexible pipe.

Images