JPH1194171A - Pipe laying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the whole length of piping by making the spacing of a plurality of branch joints as small as possible so as to arrange them as a group at the time of connecting a plurality of branch joints of a main pipe to lay feed water and hot water piping in a plurality of places, and using a flexible resin pipe as a branch pipe to be connected to each branch joint. SOLUTION: In the case of laying feed water and hot water piping, a branch joint group 15 with a plurality of branch joints 12 to be connected to a main pipe 11, arranged at minimum spaces is manufactured in a factory. This branch joint group 15 is conveyed into a laying place to connect the main pipe 11. A flexible resin pipe 13 is connected to the end part for connecting a branch pipe, of each branch joint 12, and each flexible resin pipe 13 is led into a specified place to complete laying work. Each branch pipe 13 is cut into specified length before being arranged in the specified place, and an end plug 14 for feeding water and hot water can be previously fitted to one end part. A closable inspection opening 16 is provided on the indoor side of the branch joint group 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for laying piping. More specifically, a flexible resin pipe (hereinafter, may be simply referred to as a “resin pipe”) for water supply and hot water supply used in buildings such as general houses, apartment houses, commercial buildings, and hotels. When laying in a place, there is no restriction on the connection direction to the branch joint, the length of the entire resin pipe is made as short as possible, and inspection, inspection, maintenance and renewal of water leakage at the branch joint after laying To a pipe laying method that is easy to use.

[0002]

2. Description of the Related Art Conventionally, resin pipes are widely used in water supply and hot water supply pipes of general houses, apartment houses, commercial buildings or hotels from the viewpoints of corrosion resistance, earthquake resistance, sanitation, workability, and the like. It became so. Japanese Patent Application Laid-Open No. 3-292 discloses a method for efficiently performing piping by combining a resin pipe with a branch joint.
No. 487, JP-A-7-197495, this resin pipe is inserted into a sheath to protect the pipe, and a plurality of pipes are connected and laid to a header for water supply / hot water supply. And so on.

According to the methods described in these publications, it is necessary to keep the direction in which a plurality of pipes (branches) are connected to a water supply / hot water supply header connected to the main pipe constant. FIG.
2 is a schematic plan view showing a state in which a plurality of pipes are connected to a conventional header. In FIG. 2, 21 is a main pipe, 22 is a header, 23 is a pipe (branch pipe), and 24 is a terminal plug for water supply / hot water supply.

[0004] The header is connected with a plurality of pipes (branches), and each dedicated pipe is used at a place where water or hot water is used such as a kitchen, a washing machine, a bathroom, a lavatory, a toilet, a shower room, and the like. It is used when supplying water and hot water, but when guiding the pipe to the opposite side across the header, as shown in FIG. 2, bend the pipe and place it at a predetermined position (end plug) for water / hot water supply. I needed to guide. For this reason, the length of the entire pipe becomes extremely long, which not only complicates the laying work but also has a disadvantage that it is economically disadvantageous.

[0005] When water is supplied or hot water is supplied to a place of use using individual headers by using a header, a method described in Japanese Patent Application Laid-Open No. 5-172287 has been proposed for the purpose of shortening the entire length of the pipes. ing. According to this proposed method,
A plurality of branch pipes are dispersed and connected to the main pipe.
However, according to this method, it is necessary to perform each branch pipe individually to inspect the water pressure of the branch pipe connected to the main pipe, check the water tightness, and repair any leaks. was there.

[0006]

Under these circumstances, the present inventors have made intensive studies to provide a pipe laying method which can solve the above-mentioned drawbacks of the prior art at once, and have completed the present invention. Things. The objects of the present invention are as follows. 1. An object of the present invention is to provide a pipe laying method in which the length of the entire pipe is not extremely long as compared with a case where pipes (branches) are laid by a header method, and the laying operation is simple. 2. An object of the present invention is to provide an economically advantageous method of laying a pipe, in which the entire length of the pipe is not extremely long. 3. To provide a pipe laying method that allows easy inspection, inspection, and maintenance of pipes after laying.

[0007]

In order to solve the above problems, according to the present invention, a plurality of branch joints are connected to a main pipe to connect water supply / hot water supply pipes at a plurality of predetermined locations. Laying pipes for water supply, hot water supply, etc., characterized in that a plurality of branch joints are arranged as a group with the interval as small as possible and a flexible resin pipe is connected to the end of each branch joint. Provide a way.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
In the method of the present invention, the main pipe refers to a pipe for leading a main pipe of water to each house or each room, and a pipe having a diameter larger than a resin pipe connected to a branch joint is usually employed. A meter box is installed on the water supply / hot water supply side of the main pipe, or a water heater is arranged in the case of hot water supply piping. A branch joint refers to a joint connected to a main pipe to guide water or hot water to a predetermined location. The planar shape of the branch joint is T
And a Y-shape. The branch joint is made of a metal material, a resin material such as cross-linked polyethylene, polybutene, or the like. The plurality of predetermined locations to which water or hot water is guided means a kitchen, a washing machine, a bathroom, a toilet, a toilet, a shower room, and the like.

In the method of the present invention, a plurality of branch joints are connected to each other at appropriate positions on the main pipe to form one branch joint group. In this branch joint group, a plurality of branch joints constituting the group are arranged with the interval as small as possible. The branch joints that are adjacent to each other are connected by a resin pipe of approximately the same diameter as the main pipe, but the distance between the ends of the branch joint that connect the resin pipe depends on the type of building on which the pipe is laid, the diameter of the main pipe, etc. , But can be selected in the range of 5 to 20 cm. The branch joint group is not restricted to one direction and can be alternately arranged in the opposite direction (rotated by 180 degrees), and rotated by 90 degrees when there is enough space in the arrangement place. Those in the state can also be combined.

[0010] A branch joint group in which a plurality of branch joints are connected can be manufactured at a laying site. However, since the laying place overlaps with other work or the work place is narrow,
Check the number of branch joints, the direction to connect the branch pipes of the joints, the overall length, etc. based on the drawing of the place where the water supply and hot water supply pipes are laid, manufacture in advance at the factory, check the water pressure, check the water tightness It is preferable to terminate the above. There is no particular restriction on connecting and fixing the resin pipe to the connection part of the branch joint, for example,
JIS B2354, JIS K6770, JIS K
What is necessary is just to fix by the joint apparatus of 6779 etc. etc.

As a resin pipe which can be connected as a branch pipe to the connection portion of the branch joint, a cross-linked polyethylene pipe, a polybutene pipe,
Examples include a polyvinyl chloride tube, a polyethylene tube, and a polypropylene tube. The type of the resin pipe may be selected depending on the supply location, and the diameter of the resin pipe may be selected according to the size of the diameter of the connection portion of the branch joint. Among them, a crosslinked polyethylene pipe and a polybutene pipe are preferable.

The main pipe and the resin pipe may be covered and protected with a sheath pipe, a cushioning material, or the like, and the branch joint may be covered with a cover. The sheath tube is preferably a tube that can be coiled, such as a corrugated tube or a bellows tube. Materials such as corrugated tubes and bellows tubes include polyvinyl chloride, polyethylene, polypropylene, polycarbonate, polyamides and the like. Examples of the cushioning material include foamed resin tapes such as foamed polystyrene and foamed polyethylene, laminated tapes of foamed resin and film, laminated tapes of foamed resin and metal foil, and films of foamed resin and metal deposited. A laminated tape or the like is preferable, and examples of the cover include a resin molded product and a metal cover.

When laying a pipe for water supply / hot water supply according to the method of the present invention, first, a branch joint in which a plurality of branch joints to be connected to the main pipe are arranged at a minimum interval from each other in accordance with a design drawing of a place to be laid. The group is made at the factory. The group of branch joints is carried into the installation place, connected to the main pipe, a resin pipe is connected to the end of the branch joint connecting the branch pipe, and the resin pipe is guided to a predetermined place to complete the installation work.

The group of branch joints is installed as a group on a floor surface, a space in a wall, behind a ceiling, or the like, and a plurality of branch joint groups installed in this manner are housed in one inspection port. The place where the branch joint group is arranged is preferably between the slab and the surface floorboard in a concrete building,
If it is on the floor of a wooden building, it is located between the joists and directly below the floorboard, and if it is on the wall, between the studs, it is placed in contact with the wood sliding board, plywood, lath board, etc., If it is behind the ceiling, it can be appropriately selected depending on the type of the building, such as being placed on the ceiling floor.

An openable and closable inspection port is provided on the indoor side of the branch joint group arranged on the floor, the space in the wall, the back of the ceiling, and the like. The inspection opening is used for checking the water tightness of the branch joint group after laying and repairing if there is water leakage.
When this is opened, it is arranged at a position where a group of branch joints constituting the branch joint group can be observed. The size of the inspection port can be changed according to the area occupied by the branch joint group, and the structure is a circular flat plate that can be opened and closed, a single door type, a double door type,
It can be appropriately selected according to the installation location, such as a slide type. Among them, a circular flat plate is preferable.

The method of the present invention is effective when laying water supply / hot water supply pipes and drainage pipes used for buildings such as ordinary houses, apartment houses, commercial buildings or hotels. According to the method of the present invention, there is no need to align and connect the branch pipes in a fixed direction as in the conventional "header method" shown in FIG. It is free. Therefore, unlike the “header method”, it is not necessary to lay the branch pipe in a detour direction, and the entire length of the resin pipe does not become extremely long.
It can be said that this is an economically advantageous method of laying piping.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings, but the present invention is not limited to the following description unless it departs from the gist.

FIG. 1 is a schematic plan view showing an example of a state in which pipes for water supply and hot water supply are laid according to the method of the present invention.
A branch joint group constituted by a plurality of branch joints 12 is connected to the main pipe 11 for water supply and hot water supply. As described above, the branch joint group is manufactured in a factory in advance according to the design drawing. A branch pipe 13 is connected to an end connecting the branch pipes of the plurality of branch joints. Each of the branch pipes 13 may be cut into a predetermined length in advance before being placed at a predetermined location, and an end plug 14 for water / hot water supply may be attached to one end. An openable / closable inspection port 16 is provided on the indoor side of the branch joint group constituted by the plurality of branch joints 12.

[0019]

The method of the present invention has the following particularly advantageous effects, and its industrial value is extremely large. 1. In the method of the present invention, since the direction in which the branch pipes are connected is not restricted as in the header method, there is no need to individually lay curved resin pipes at a plurality of use locations, and the construction work is simple. 2. In the method of the present invention, since the direction in which the branch pipes are connected is not restricted as in the header method, it is not necessary to lay curved resin pipes for individually supplying hot water and water at a plurality of use locations. Since the length of the piping can be minimized, it is extremely economically advantageous. 3. According to the method of the present invention, since a plurality of branch joints are arranged as a group and covered with an openable / closable cover, inspection, inspection, and maintenance of the pipe after the installation is extremely easy.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an example of a state in which a pipe for water supply / hot water supply is laid according to the method of the present invention.

FIG. 2 is a schematic plan view showing a state in which a plurality of pipes (branches) are connected to a conventional header.

[Explanation of symbols]

 11, 21: Main pipe 12: Branch joint 13, 23: Branch pipe 14, 24: Terminal plug for water supply / hot water supply 15: Branch pipe group 16: Openable / closable inspection port 22: Header

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuhiro Sueyoshi 1-20-5 Chiyoda, Yokkaido, Chiba

Claims (4)

[Claims] When connecting a plurality of branch joints to a main pipe and laying water supply / hot water supply pipes at a plurality of predetermined locations,
A plurality of branch joints connected to the main pipe are arranged as a group with the interval as small as possible, and a flexible resin pipe is connected to an end of each branch joint. How to lay pipes for use. 2. A plurality of branch joints connected to a main pipe are arranged as a group on a floor surface, a space in a wall, a space above a ceiling, and the like, and can be opened and closed on the indoor side of the group of branch joints thus arranged. The method for laying pipes according to claim 1, wherein an opening is provided. 3. The inspection port is formed in a round shape.
The method for laying a pipe according to claim 1. 4. The method according to claim 1, wherein a plurality of branch joint groups are assembled in advance.
The method of laying piping described in the section.