JPH11276624A - Sprinkler fire-fighting facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate danger for a flexible pipe, its joint part and further connecting member of the flexible pipe and a sprinkler head to be damaged by external force or the like during or after construction. SOLUTION: This fire-fighting facility is provided with water feeding piping 5, sprinkler head 43 and flexible pipe 21 for connecting the water feeding piping 5 and the sprinkler head 43 directly or through a header 11 or the like. In this case, a connecting part 41 for connecting the flexible pipe 21 and the sprinkler head 43 at least is housed in a joint box 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system for a sprinkler, and more particularly, to a fire extinguishing system including a flexible tube installed above a ceiling and a connecting member for connecting the flexible tube to a sprinkler head. This is related to sprinkler fire extinguishing equipment.

[0002]

2. Description of the Related Art As an example of a sprinkler fire extinguishing system, there is an invention described in Japanese Patent Publication No. 7-114819.
According to the present invention, a nipple is suspended from an auxiliary pipe branched from a main pipe, and a multi-port joint (header) is connected to a lower end thereof.
One end of a flexible joint pipe (flexible pipe) was connected to each outlet of this multi-port joint, a sprinkler head was attached to the other end, and the flexible joint pipe was arranged in a relaxed state by being placed above the ceiling. Things.

[0003]

In such a sprinkler fire extinguishing system as described above, a resin tube which is generally exposed may be used as a flexible tube. In addition, a joint portion of a flexible tube or a sprinkler head, or a flexible tube or a sprinkler head, may be used. The connecting members were also exposed. For this reason, during or after construction of the sprinkler fire extinguishing equipment, flexible pipes, joints, or connecting members thereof may be damaged by piping work such as electric wiring, cooling and heating, or equipment work such as ducts. It is also conceivable that rat damage may occur on the flexible tube or the like later. As described above, when the flexible tube and its joint, or the connecting member between the flexible tube and the sprinkler head are damaged, a problem such as a decrease in strength and a decrease in durability such as water leakage occurs. In addition, in order to protect the flexible tube made of resin,
In some cases, the flexible tube is constituted by a double tube having a sheath, but this does not protect the joint, the connecting member, and the sprinkler head.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. During and after construction of a sprinkler fire extinguishing system, a flexible pipe and its joint, and more particularly, a flexible pipe and a sprinkler head are connected. It is an object of the present invention to obtain a sprinkler fire extinguishing system in which a connecting member or the like is not likely to be damaged by an external force or the like.

[0005]

A sprinkler fire extinguishing system according to the present invention comprises a water supply pipe, a sprinkler head, and a flexible pipe connecting the water supply pipe and the sprinkler head directly or via a header or the like. At least a connection member for connecting the flexible tube and the sprinkler head is accommodated in a joint box.

The sprinkler fire extinguishing system described above has a flexible tube having a double structure consisting of a sheath tube and a resin tube inserted therein, a connection port to which the flexible tube is connected, and a lid that can be opened and closed. A joint box, wherein the sheath of the flexible tube is fixed to a connection port outside the joint box, and the resin tube is connected to a connection member in the joint box and fixed to the joint box.

[0007] The above-mentioned joint box is mounted on a mounting plate provided on the ceiling plate via a ceiling plate or a ceiling base material.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing a main part of a sprinkler fire extinguishing system according to one embodiment of the present invention. In the drawing, 1 is a ceiling slab, 2 is a ceiling plate attached to a ceiling base material 4 such as a channel stretched and surrounded in four directions below the ceiling slab 1, and provided with an opening 2a for attaching a sprinkler described later. Have been. Reference numeral 3 denotes a mounting plate having substantially the same size as the lower surface of a joint box described later. An opening 3a is provided substantially at the center, and is mounted on the upper surface of the ceiling base material 4.

Reference numeral 5 denotes a water supply pipe, which is fixed to a hanging bracket or the like (not shown) hanging from the ceiling slab 1 and arranged substantially horizontally. Reference numeral 6 denotes a substantially T-shaped branch pipe connected to the water supply pipe 5 and having a connection port 7 having a flange 8. Reference numeral 11 denotes a flat rectangular and substantially box-shaped header, and a connection port 12 having a flange 13 is provided in the center of the upper surface, and discharge ports 14a, to which flexible pipes for piping described later are connected, are provided on four side walls. 14b, 14c, and 14d (14d is not shown) are provided.

Reference numeral 15 denotes a connecting pipe having flanges 16a and 16b at both ends and connecting the branch pipe 6 and the header 11. Note that a flexible tube may be used as the connection tube 15.
21 is a flexible tube for piping (shown in a mesh shape in the figure)
As shown in FIG. 2, for example, a resin tube 23 is inserted into a bellows-shaped or spiral-shaped flexible sheath tube 22 to form a double tube, and joint portions 24 are provided at both ends. Have been.

Reference numeral 31 denotes a joint box for protecting a sprinkler head described later and an elbow or the like as a connecting member thereof, an example of which is shown in FIGS. 2 and 3. Reference numeral 32 denotes a main body of the joint box 31, which is formed in a rectangular tube shape whose top and bottom are opened by a metal plate, a synthetic resin material, or the like. Reference numeral 34 denotes a cylindrical connection port provided on the side wall. Reference numeral 35 denotes a lid which is openably and closably attached to an upper opening of the main body 32 via a hinge 36, and a handle 37 is provided. Although the case where the main body 32 is formed in the shape of a square tube is shown, the main body 32 may have a cylindrical shape or other shapes, or a small door may be provided on the side wall.
Reference numeral 41 denotes a resin elbow, for example, which has connection ports 42a and 42b at both ends and forms a connection member between the flexible pipe 21 for piping and the sprinkler head 43. 4a is a rod-shaped fixing member provided between both side walls of the main body 32 of the joint box 31.

Next, an example of the construction procedure of the present invention will be described. At the time of construction, the water supply pipe 5 provided with the branch pipe 6 is fixed to a hanging fitting (not shown) hanging from the ceiling slab 1, and the header 11 is connected to the branch pipe 6 via the connection pipe 15. Connected to the ceiling slab 1
A ceiling base material 4 such as a channel is vertically and horizontally wrapped underneath. In this case, the header 11 may be fixed to the ceiling base material 4 or the like with a fixture.

First, the mounting plate 3 is connected to the sprinkler head 43.
Is placed on the ceiling base material 4 in the vicinity of the installation position, and is fixed to the ceiling base material 4 by a fixture (not shown) or the like. And
The main body 32 of the joint box 31 is placed on the mounting plate 3, and the mounting pieces 33 are fixed to the mounting plate 3 with screws 38. At this time, the lid 35 may be left open or may be removed.

Next, the other end of the flexible tube 21 whose one end is connected to a discharge port (for example, 14c) of the header 11 is located near the joint box 31, and the sheath tube 22 is connected to the connection port of the joint box 31. 34 and fixed with the fixing bracket 26. Then, insert one end of the resin tube 23 into the sheath tube 2.
2 is inserted into the bush-shaped resin pipe stopper 25, fitted into one connection port 42a of the elbow 41 inserted into the joint box 31, and fixed by, for example, heat fusion.

Then, the other end of the elbow 41 is projected downward from the opening 3a of the mounting plate 3, and the sprinkler head 43
Positioning of the tip to which is attached, the fixing member 4a
Is fixed by a fixing bracket 44. In this state, connection port 3
The resin tube stopper 25 is pressed into between the resin tube 4 and the resin tube 23 to fix the resin tube 23, and the lid 35 is closed. When sagging occurs in the flexible tube 21, the flexible tube 21 may be fixed to the nearby ceiling base material 4 or the like with a binding band or the like.

After the above-mentioned work and other wiring and piping work are completed, the elbow 41 is placed almost at the center of the opening 2a.
And the ceiling plate 2 is attached to the ceiling base material 4. Then, a sprinkler head 43 is screwed into and attached to the tip of the elbow 41 from under the ceiling plate 2, and a part thereof is exposed from the lower surface of the ceiling plate 2. Reference numeral 45 denotes a sealing plate for closing the opening 2a formed on the outer periphery of the sprinkler head 43.

As described above, an example of the construction according to the present invention has been described. However, the construction method according to the present invention is not limited to this.
For example, the elbow 41 is temporarily fixed in the joint box 31 in advance, carried into the ceiling, and the joint box 31 is fixed to the mounting plate 3. After the resin tube 23 is fixed in the elbow 41, the tube 22 is fixed to the connection port 34, and the elbow 41 is fixed to the fixing member 4 a or the like. The sprinkler head 4
3 may be attached to the elbow 41 in advance.

As is apparent from the above description, in the present invention, the resin tube is housed in the sheath to form a flexible tube for piping having a double structure, and the sheath is fixed to the joint box. Since the resin pipe is connected to the elbow accommodated in the joint box, there is no possibility that the resin pipe or the elbow will be damaged during or after the construction. In addition, since the resin pipe is finally fixed to the joint box during construction, even if the resin pipe expands and contracts, the elbow and the like are not affected.

Conventionally, since the elbow is merely fixed to the base material of the ceiling or the like, a large load is imposed on the connecting portion with the elbow and the fixing portion depending on the connection direction of the flexible tube.
According to the present invention, since the flexible tube is held by the joint box and is simply connected to the elbow, the load on the connection portion and the like can be greatly reduced.

Further, since the joint box is provided with an openable and closable lid, maintenance is easy, and if a moisture absorbent or a heat insulating material is put in the joint box, the ceiling plate becomes dirty due to dew condensation of the elbow or the like. And corrosion of the elbow, the sprinkler head, and the like can be prevented.

In the above description, the case where the illustrated box-shaped header is used is shown. For example, a header having a discharge port on one side or both sides of a cylindrical main body is horizontally mounted on the branch pipe. Any structure can be used. Also, without using a header, a sprinkler fire extinguishing system in which one end of a flexible pipe is directly connected to a branch pipe or a branch pipe provided in a water supply pipe, and a sprinkler head is connected to the other end via an elbow or the like. The present invention can also be implemented.

Although the joint box is shown as having a box shape made of a metal plate or a synthetic resin plate, the joint box is made up of a metal material or a synthetic resin material in a frame shape, and a wire netting or the like is attached thereto. And an appropriate shape can be used. Furthermore, although the case where the joint box is fixed on a mounting plate provided on a ceiling base material or the like is shown, the joint box may be fixed directly on the ceiling plate.

[0023]

The sprinkler fire extinguishing equipment according to the present invention
A water supply pipe, a sprinkler head, and a flexible pipe that connects the water supply pipe and the sprinkler head directly or via a header or the like, and at least a connection member that connects the flexible pipe and the sprinkler head is housed in a joint box. As a result, the connecting members and their joints are not damaged during or after the construction.

Further, in the above-described sprinkler fire extinguishing equipment, a flexible tube having a double structure composed of a sheath tube and a resin tube inserted therein, a connection port to which the flexible tube is connected, and an openable / closable lid. And a joint box having a body, the sheath of the flexible tube is fixed to the connection port outside the joint box, and the resin tube is connected to the connection member inside the joint box and fixed to the joint box. Therefore, it is possible to prevent the resin pipe and the elbow from being damaged during and after the construction. In addition, since the flexible tube is fixed to the joint box and connected to the connecting member, a large load is not applied to the connecting portion.

Further, since the above-mentioned joint box is mounted on a mounting plate provided on the ceiling plate via a ceiling plate or a ceiling base material, the mounting operation is easy, and the joint box is firmly fixed. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a plan view of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling slab 2 Ceiling board 3 Mounting plate 4 Ceiling base material 5 Water supply pipe 6 Branch pipe 11 Header 14a-14d Discharge port 21 Flexible pipe for piping 22 Sheath pipe 23 Resin pipe 25 Resin pipe stopper 26 Fixture 31 Joint box 34 Connection port 35 Lid 41 Elbow (connection member) 43 Sprinkler head

Claims (3)

[Claims] 1. A water supply pipe, a sprinkler head, and a flexible pipe that connects the water supply pipe and the sprinkler head directly or via a header or the like, and a connection that connects at least the flexible pipe and the sprinkler head. A sprinkler fire extinguishing facility, wherein the members are accommodated in a joint box. 2. A flexible tube having a double structure comprising a sheath tube and a resin tube inserted therein, and a joint box having a connection port to which the flexible tube is connected and a lid which can be freely opened and closed. Wherein the sheath of the flexible tube is fixed to a connection port outside the joint box, and the resin tube is connected to a connection member inside the joint box and fixed to the joint box. Claim 1
The described sprinkler fire extinguishing equipment. 3. The sprinkler fire extinguishing system according to claim 1, wherein the joint box is mounted on a mounting plate provided on the ceiling plate via a ceiling plate or a ceiling base material.