JPH06210016A - Pipe joining construction for piping equipment for liquid spraying - Google Patents

Abstract

PURPOSE:To perform the construction without performing a water draining in the already existing equipment when additional liquid spraying heads, etc., are connected to already existing pipings at piping equipment for liquid spraying such as a sprinkler device, etc. CONSTITUTION:A branch pipe 11 for the connection of a liquid spraying head at already existing piping equipment is made to be a bent pipe, and when an additional liquid spraying head is connected to the branch pipe 11, the branch pipe 11 is bent upward until the connecting port D reaches a higher location than the maximum liquid level WL for the piping system, and under a condition in which a liquid leakage from the connecting port D does not generate, a joining pipe AP for the connection of an additional liquid spraying head is connected to the connecting port D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid sprinkling pipe facility, such as a fire protection sprinkler device, which sprays a predetermined liquid from a large number of spray heads.
The present invention relates to a pipe extension method when an additional sprinkling head is added to the initially constructed pipe facility.

[0002]

2. Description of the Related Art For example, sprinkler devices are often installed in large-scale facilities such as department stores and underground parking lots. When such sprinkler devices are added or expanded in such facilities, the existing sprinkler devices are used. The expansion or expansion may be performed by a method of adding an additional sprinkling head to a part of the piping of the device.

In such a case, conventionally, after closing the main plug of the existing piping system to which an additional sprinkling head is to be added, all the liquid (extinguishing liquid) in the piping system is extracted,
After that, it is general to add an additional sprinkling head. However, when additional construction is performed by such a method, there are problems such as the time and effort of draining the liquid in the pipe and waste of discharging the liquid, or even temporarily, the equipment such as the sprinkler device cannot be used. , And so on.

[0004]

Therefore, the present invention is
When connecting a new sprinkling head to an existing sprinkler device or other liquid distribution piping equipment,
The present invention intends to solve the above-mentioned problems by allowing the work to be performed without draining the liquid inside the existing piping system.

[0005]

As a means for achieving the above-mentioned object, the pipe replenishing method in the liquid spraying piping facility of the present invention, as illustrated in FIGS. Branch pipes 11 and 12 that are branched
In the piping equipment for liquid spraying, which sprays a required liquid from the spraying heads 21, 22 mounted on the ..., the branch pipes 11, 12, ... are bent vertically. In the case where it is necessary to use a bendable pipe FP that is possible and to add an additional liquid sprinkling head AH to the liquid sprinkling pipe facility, one of the branch pipes 11 and 12 is used.
... is bent upward and at a position higher than the maximum liquid level WL on the side of the liquid supply source W on the tip side of the branch pipes 11, 12 ,. It is characterized by connecting.

[0006]

According to the pipe extension method of the present invention, when an additional liquid spraying head is to be added to the existing liquid spraying pipe facility, the additional liquid spraying head AH should be added first. Fig. 1 shows the branch pipes (11, 12 ...)
Bend upward as illustrated in FIG. Then, the additional liquid sprinkling head AH is added at the position on the tip side of the branch pipes (11, 12 ...) Bent upward in this manner and at a position higher than the highest liquid level WL on the liquid supply source W side. Connect the piping AP for. In that case, the branch pipe (11, 12 ...) To which the additional liquid sprinkling head AH is to be added is provided with a connection port D (which is normally closed with a blind plug E) for connecting the pipe AP for additional connection. Once formed, the same connection port D
Although the replenishment pipe AP can be connected to the above, the present invention is not limited to such a construction example. For example, the branch pipe (11, 12, ...
It is also possible to form a connection port D for connecting the replenishment pipe AP on the tip side of () at the site with a drill or the like, and connect the replenishment pipe AP to the connection port D.

As described above, appropriate branch pipes (11, 12 ...
When the connection pipe AP is connected to (.), An additional liquid sprinkling head AH is attached to the connection pipe AP, as illustrated in FIG. Alternatively,
The additional sprinkling head AH may be attached to the pre-addition pipe AP.

[0008]

According to the present invention, even when it is necessary to add an additional sprinkling head AH to an existing liquid spraying pipe facility, the liquid in the existing pipe facility is extracted as in the conventional case. There is no need, and therefore, the labor and cost for the extraction can be saved, and the existing piping equipment can be continuously used without any temporary unusable state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 4 shows an example of a facility G to which the present invention is applied, such as a department store or an underground parking lot. An example of piping equipment for a fire extinguishing sprinkler device is shown.

In FIG. 4, a portion designated by G'is an extension portion of a facility G such as a department store, AH is an additional sprinkler head of a sprinkler device additionally installed in the extension portion G ', and Reference symbol AP is each sprinkling head AH
It is a replenishment pipe for connecting to the water source side.

In this embodiment, a water sprinkling unit U (see FIG. 5) manufactured by applying the concept of the prior invention developed by the applicant of the present invention and jointly applied for a patent (JP-A-4-219585).
4 are used to configure the piping equipment of the sprinkler device as shown in FIG.

As shown in FIG. 5, the sprinkling unit U is
Eight sprinkling heads 21 to 28 for watering are arranged around the repeater 1 as a center, and the central repeater 1 and each sprinkling head 21 to 28 are connected by branch pipes 11 to 18, respectively. Is configured. Then, the required number of watering units U ₁ ... Un are arranged adjacent to each other as shown in FIG. 4 so as to cover a required area of the facility such as the department store or the parking lot. Each sprinkling unit U ₁
Each of the relay units 1 to Un is connected to the fluid supply trunk pipe 5 via the fluid supply branch pipe 6, and each of the sprinkling heads 21 to 28 of each sprinkling unit includes the fluid supply branch pipe 6 and the relay unit. Fire extinguishing water (or foam) is supplied via 1 and each branch pipe 11-18. The central repeater 1 itself also has a sprinkling head (repeater head) 10. When fire extinguishing water (or foam) is sprayed from each sprinkling unit U _{1 to} Un at the time of a fire, the fire extinguishing water (or foam) is sprayed. ) Is sprayed in the range indicated by each small circle C, and as a result, each watering unit U covers the square area 50.

The water sprinkling units U _{1 to} Un are arranged in such a distance relationship that a gap is not formed between the fluid spraying areas 50, 50 ...

Branch pipes 11 to 18 connecting the repeater 1 at the central portion and the respective sprinkling heads 21 to 28 in the respective sprinkling units (U _{1 to} U ₁₂ ) are made of stainless steel wire braid in the middle portions thereof. It has a bent tube FP.

The branch pipe 11 shown in FIG.
It is composed of a proximal tube SP connected to the side and a bending tube FP to which the sprinkling head 21 is connected to the tip side.

A connection port D is formed near the tip of the bending tube FP so as to connect an additional sprinkling head AH when it is necessary later. This connection port D is normally closed with a blind plug E.

Next, in the case of the illustrated embodiment, as shown in FIG. 4, in addition to the piping facilities U _{1 to} U ₁₂ of the existing facility G, the piping facility for the additional facility G'is additionally connected. explain.

In the case of the embodiment of FIG. 4, when installing the required number of additional sprinkling heads AH in the extension facility G ', the sprinkling unit U of the piping facility of the existing facility G is used.
Connect to one of the branch pipes (11-18),
The specific method will be described below with reference to FIGS.

FIG. 1 shows an additional pipe A for connecting an additional liquid sprinkling head AH to a sprinkling unit U in a pipe facility for an existing facility G.
The procedure for connecting P is shown. In the example of FIG.
From the bent pipe FP of the branch pipe 11 that connects the repeater 1 and the sprinkling head 21, the additional pipe A for adding the additional sprinkling head AH.
Although P is branched and connected, in this case, the bending pipe FP of the branch pipe 11 is bent (flexed) upward as shown by an imaginary line (FP ′), and is attached to the tip side of the bending pipe FP. The sprinkling unit U is provided with the connection port D provided as indicated by reference numeral D '.
Is located above the highest liquid level (height of the fluid supply branch pipe 6 in the embodiment of FIG. 1) WL. Next, FIG.
Although the blind plug E shown in (1) is removed, in that case also, since the connection port D'is located above the maximum liquid level WL of the piping system, liquid leakage from the connection port D does not occur. Then, as shown in FIG. 3, the extension pipe AP is connected to the opened connection port D (the additional liquid sprinkling head AH is attached to the pre-addition pipe AP, or after the extension pipe AP is added, the addition pipe AP is added). Attached to AP).

In this embodiment, the connection pipe D is connected to the preformed connection port D, but the present invention is not limited to the preformed connection port D. When applied to the site, when the bending pipe FP is bent upward, the tip end side of the bending pipe FP is perforated by a drill or the like, and the pipe AP is connected to the perforated portion. Good.

When the addition of the additional liquid sprinkling head AM to the existing pipe equipment is completed as described above, the branch pipe 11 bent upward is returned downward to the original state, and a new addition is made. The extension pipe AP is suspended and supported from the ceiling or the like.

By repeating the above steps in sequence, the required number of additional sprinkling heads AH are added.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a pipe extension method according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an explanatory view of a state in which an additional pipe is connected to the connection port on the distal end side of the bending pipe in the embodiment of FIG.

FIG. 4 is a piping system diagram of a sprinkler device to which the present invention is applied.

5 is an enlarged explanatory view of the water sprinkling unit shown in FIG. 4.

[Explanation of symbols]

1 is a repeater, 5 is a fluid supply main pipe, 6 is a fluid supply branch pipe, 1
1 to 18 are branch pipes, 21 to 28 are sprinkling heads, AP is a supplementary pipe, AH is an additional sprinkling head, FP is a bent pipe, D is a connection port, E is a blind plug, WL is the highest liquid level, W is W It is a liquid supply source.

Claims (1)

[Claims] 1. A sprinkling head (21, 22) mounted on a branch pipe (11, 12 ...) Branched from a liquid supply source (W).
In the piping equipment for liquid spraying, which sprays the required liquid from the ...), the branch pipes (11, 12)
...) is a bendable pipe (FP) that can be bent in the vertical direction, and when it is necessary to add an additional liquid spraying head (AH) to the liquid spraying piping equipment, one of the branches Bending the pipes (11, 12 ...) Upward and at the tip side of the branch pipes (11, 12 ...) And at the liquid supply source
A pipe replenishment method characterized by connecting a pipe (AP) for replenishing an additional spray head (AH) at a position higher than the highest liquid level (WL) on the (W) side.