JP2868991B2 - Construction method of liquid transfer pipe with sheath pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method for constructing a liquid transfer pipe with a sheath pipe, and more particularly, to a method for constructing a liquid transfer pipe with a sheath pipe which is simplified on site.

[0002]

2. Description of the Related Art In a building, when laying a pipe for supplying water for supplying water, hot water or the like, a sheath pipe header method has conventionally been adopted. The sheath pipe header method is a method of laying a liquid supply pipe on a floor wall of a building, for example, a concrete floor wall, from a header connected to a water supply pipe to a desired place, for example, a kitchen. This is a method in which a tubular member is laid beforehand, and then a liquid feed pipe is drawn into the tubular member and laid.

That is, in the sheath pipe header method, a hollow tubular member is laid in advance to secure a route for laying a liquid feed pipe, and a liquid feed pipe drawn into the pipe is covered and protected from the outside in a sheath shape. Laying method. Since the outer tubular member of the liquid feed pipe covers and protects the liquid feed pipe, in this method, it is generally referred to as a sheath pipe, and it is easy to lay along a path including a bend in a limited space in a building. As described above, a flexible resin tube, particularly a corrugated tube is used. A flexible resin pipe, for example, a polybutene pipe or a cross-linked polyethylene pipe is used for the liquid feeding pipe so as to be easily drawn into the sheath pipe.

[0004] In such a sheath pipe header method, after the sheath pipe is laid, only the liquid feed pipe can be inserted and removed, so that the liquid feed pipe can be easily laid and maintenance such as replacement of the liquid feed pipe after the laying is performed. Is also easy. Further, there is an advantage that the skill is not required for the piping work, and the work can be easily performed even by a non-expert.

[0005]

Although the sheath pipe header method has the above-mentioned excellent advantages, it has a long length of, for example, 50 m.
A bundled product wound around a sheath tube is carried into the construction site,
Since it is used while being appropriately cut in accordance with the length of the piping route, it requires labor for transporting the bundled product and also requires some space for storage at the construction site.

In addition, it is often difficult to insert a liquid feed pipe into a sheath pipe at a bent pipe route or a rising portion. Furthermore, compared to the iron pipe laying method, although the piping work can be easily performed even by a non-skilled person, the work of inserting the liquid feed pipe into the sheath pipe,
At present, it takes a considerable amount of time to attach a joint or the like to a pipe end of a liquid sending pipe or to perform an inspection task. In particular, since the work space is limited at the construction site,
When the mounting position of the parts such as the joints is low or narrow, the work is often difficult to perform, and therefore, the mounting failure tends to occur.

In addition, in the case of construction on site, the liquid supply pipe or sheath pipe cut by an operator is too short to be used, or conversely, it is too long, so that it must be shortened thereafter. In some cases, a large amount of loss (waste) was generated. For this reason, in the sheath pipe header construction method having various advantages, it has been demanded to simplify the construction on site.

Particularly, in a construction site where a large number of facilities for water around which are installed compactly in a small space, such as condominiums and the like, are constructed in the same arrangement, the number of processes can be shortened due to process coordination with other industries. There was a strong demand, and it was necessary to shorten the inspection time after construction. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of constructing a liquid-sending pipe with a sheath pipe, which simplifies the construction on site.

[0009]

To achieve the above object, according to the solution to ## construction method of the sheath liquid supply pipe with tube according to the present invention, predetermined
Insert a specified length of liquid feed pipe into a hollow tubular sheath tube of length
One end of the liquid feeding pipe of the liquid feeding pipe with sheath
The sheath tube head connected to the branch of the header connected to the tube
Prepare a prefabricated unit,
After bringing the hub unit into the construction site,
The upper support of the header base to fix the header.
A support for the header mount that has been installed in the construction site in advance
One-touch type mounting on the holder,
The liquid sending pipe with sheath tube of the
In accordance with the

Preferably, on a piping route at the construction site
In advance, a support saddle is arranged along a predetermined route,
One-touch type liquid feed pipe with a tubing to the support saddle
Into a predetermined pipe loop of the liquid transfer pipe with sheath pipe.
Arrange according to the above. Preferably, the sheath tube header
Wrap the pre-fabricated unit with a sheath pipe in a coil shape
To make a coil body.
Unravel along the piping route of

[0011]

According to the method for constructing a liquid transfer pipe with a sheath tube according to the present invention, since a plurality of sheath tubes are wound in a coil shape for each or a plurality of tubes to form a prefabricated unit, the sheath tube header prefabricated. The unit can be transported by one person, which eliminates the need to carry long bundles of tubing to the construction site, reducing the labor required to transport bundles. Is done.

In addition, since the sheath pipe header prefabricated unit having a plurality of coils wound after inserting the liquid feed pipe into the sheath pipe is formed, the work for inserting the liquid feed pipe into the sheath pipe at the construction site is performed. Is unnecessary, and simplification of piping work on site is achieved. On the other hand, since the work of inserting the liquid feed pipe into the sheath pipe can be performed in a place such as a factory where a sufficient work space is secured, the liquid feed pipe is inserted into the sheath pipe with a substantially straight or large bending radius. Can be easily inserted.

Further, since one end of the liquid feed pipe in the sheath pipe header prefabricated unit is connected in advance to the header, the work of connecting the liquid feed pipe to the header at the construction site becomes unnecessary, and Is simplified. On the other hand, since the work of connecting the liquid feed pipe to the header can be performed in a place such as a factory where a sufficient work space is secured, the work can be performed quickly and easily,
Eliminating mounting errors is eliminated.

[0014] Further, if the length of the liquid sending pipe with the sheath pipe is set to the extension length from the position where the header is arranged at the construction site to the position where the faucet is arranged, at the construction site,
The work of cutting the sheath pipe and the liquid feed pipe is not required, and the pipe construction on site can be simplified. Further, material loss of the sheath pipe and the liquid feed pipe is reduced.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a construction of a liquid feeding pipe with a sheath pipe according to the present invention. FIG. 1 is a diagram showing an example of piping construction by a sheath pipe method. A hot water supply header 11 is provided in a water supply pipe 11 into which hot water from a hot water supply device 10 is guided.
2 is connected, and a water supply side header 12 is connected to a water supply pipe 13 through which tap water is led. Hot water supply header 1
2 hot water pipes 15 connected to water supply header 1
A plurality of water pipes 16 connected to 2 are extended to hot water faucets and water faucets provided at a plurality of locations in the dwelling unit, respectively. In the illustrated example, a faucet 1 for supplying hot and cold water to a bathtub, a shower, a sink, a washing machine, a sink, a toilet, and the like.
The example extended to 7 is shown.

Each of the hot water pipe 15 and the water pipe 16 is constituted by inserting a liquid feed pipe 19 through a sheath pipe 18, and one end of the liquid feed pipe 19 is connected to the header 1 through a joint 21.
2 and the other end is connected to the faucet 17 via the joint 22. Further, each end of the sheath tube 18 is connected to each joint 21, 2 through an adjuster 23 (see FIG. 2A).
2 so as to cover it.

FIGS. 2 (A) and 2 (B) show an example in which the method for constructing a liquid transfer pipe with a sheath tube according to the present invention is embodied. FIG. 2 (A) shows a sheath tube header before construction. FIG. 1B is a schematic configuration diagram showing a prefabricated unit, and FIG. 1B is a schematic configuration diagram showing a state where the sheath prefabricated unit is carried into a construction site and constructed. In these figures, only one liquid transfer pipe 24 with a sheath pipe is shown for simplification. 2 (A) and 2 (B), the illustration of the adjuster 23 attached to the end of the liquid feeding pipe 24 with a sheath tube constituting the coil body C shown in the figure is omitted, and the transport with the sheath tube adjacent thereto is omitted. At the end of the liquid pipe 24, the joint 21 mounted in the adjuster 23 is omitted in the drawing.

The sheath tube header prefabricated unit U is formed in a place other than the construction site, for example, in a factory where a sufficient working space is secured, and includes a header 12 and a plurality of sheath tubes connected thereto. Liquid supply piping 24
And The header 12 is a pipe member having a plurality of branch ports 25 (five in the illustrated example), and a bracket 26.
Is attached to the plate-shaped upper support plate 27 via the.
The upper support plate 27 constitutes a header base 29 together with a lower support plate 28 provided at a construction site described later.

The liquid feeding pipe 24 with a sheath pipe has a liquid feeding pipe 19 inserted in advance into the sheath pipe 18.
It is preferable to provide a buffer layer 20 between the liquid supply pipe 19 and the liquid supply pipe 19 (see FIG. 1). The buffer layer 20 is provided for countermeasures against noise of a hitting sound caused by a water hammer phenomenon, and is made of, for example, a sheet material of a foam such as foamed polyethylene. The buffer layer 20 is formed by winding the foam sheet around the liquid feed pipe 19 and inserting the sheet into the sheath pipe 18.

As the sheath tube 18, a flexible synthetic resin tube, particularly a pipe material such as a corrugated tube, which can be wound with a coil, is used. As the liquid sending pipe 19, a pipe having flexibility so as to be easily drawn into the sheath pipe 18 is preferable.
For example, a pipe material that can be wound with a coil, such as a crosslinked polyethylene pipe, a polyethylene pipe, a polybutene pipe, a copper pipe, a stainless steel pipe, and a stainless flexible pipe, is used.

In this embodiment, as shown in FIG.
A liquid supply pipe 19 and preferably a buffer layer 2 are provided in the sheath pipe 18.
After inserting a plurality of liquid-feeding pipes 24 with sheath pipes by inserting 0, the plurality of liquid-feeding pipes 24 with sheath pipes are respectively wound in a coil shape to form a coil body C. In addition, a plurality of liquid feeding pipes 24 with a sheath pipe having the same length may be wound together in a coil shape to form a coil body C.

One end of the liquid supply pipe 19 is connected to a branch port 25 of the header 12 via a joint 21, and a connector 30 connected to the faucet 17 is previously attached to the other end. . Further, both ends of the sheath tube 18 are connected to the joint 21 and the connection tool 30 via the adjuster 23, and a predetermined tube end process is performed.

Further, each liquid supply pipe 24 with a sheath pipe connected to each branch port 25 of the header 12 extends from the position where the header 12 is arranged at the construction site to the position where the faucet 17 is arranged. It is cut in advance so as to be equal to the line length. Since each of the sheathed pipes 24 is cut to a predetermined length, a destination display plate 31 is attached to each of the wound sheathed pipes 24 to prevent connection errors. I have. For example, “bathroom” is displayed on the display board 31.
An indication such as "kitchen" is displayed. Unit U
Has been subjected to a watertight inspection of the connection between the header 12 and each pipe 19 before shipment from the factory.

As shown in FIG. 2B, at the construction site,
A lower support 28 that holds the upper support 27 is provided so that the lower end of the upper support 27 is inserted. By fixing the upper support 27 to the lower support 28 with the bolt 32 or the like, the entire sheath tube header prefabricated unit U is attached to the lower support 28 in a one-touch manner. As described above, the header base 29 is connected to the upper support 27 and the lower support 28.
Since the configuration is such that the sheath prefabricated unit U can be easily fixed to the construction site.

In the construction site, there is a liquid feed pipe 2 with a sheath pipe.
In order to start up 4 and guide it to faucet 17, upper support 33
There is provided a piping support base 35 composed of a lower support base 34 and a pipe support base 35. The lower support 28 and the pipe support 35 of the header base 29 are installed at predetermined positions determined by design. In addition, the sheath pipe saddle 36, the corner vent 37, and the like are fixed in place along the piping route in advance.

The sheath tube header prefabricated unit U formed as described above is constructed at the construction site as follows. First, after carrying the sheath tube header prefabricated unit U to the construction site, the upper support 27
Is fixed to the lower support 28 with bolts 32 or the like. Next, each of the wound coil bodies C (liquid feeding pipe 2 with sheath pipe 2)
4) is quickly unwound along a predetermined piping route and extended, and is started up along the pipe support 35, and the connector 30 attached to the other end of the liquid sending pipe 19 is connected to the faucet 17.
Then, if the extended liquid sending pipe 24 with a sheath pipe is fixed at an appropriate place on a concrete floor wall with a support saddle 36 or the like, the piping construction of the liquid sending pipe 24 with a sheath pipe is completed. Note that the support saddle 36 is preferably one in which the upper part of the holding portion is opened upward so that the pipe 24 can be inserted therethrough so that the sheathed liquid transfer pipe 24 can be attached in a one-touch manner.

As described above, at the construction site, the work of installing the lower support 28 and the pipe support 35 of the header base 29, extending the wire, fixing the sheath pipe 18, and connecting the connecting tool 30 to the faucet 17 are performed. Work to cut the sheath pipe 18 and the liquid supply pipe 19,
8, connecting the liquid supply pipe 19 to the header 12, attaching parts such as the connector 30 to the liquid supply pipe 19, and performing pipe terminal processing for attaching the adjuster 23 to the sheath pipe 18. Absent. Further, since the water tightness inspection of the header connection portion is completed at the factory, the inspection is not necessary. As a result, speeding up and simplification of construction on site are achieved.

Further, since the liquid feed pipe 24 with a sheath pipe for each or a plurality of pipes is wound into a small coil and formed into a coil, the header prefabricated unit U having the coil can be used alone. It can be transported. Accordingly, it is not necessary to carry a long bundled product of the sheath tube 18 and the liquid feeding pipe 19 to the construction site, and the labor required for transporting the bundled product is reduced. In addition, since the liquid feed pipe 19 has already been inserted into the sheath pipe 18 and components such as the connector 30 have already been attached, the sheath pipe 18, the liquid feed pipe 19, the component 30, and the like are stored separately. Compared with the case, the storage space can be saved not only at the construction site but also at the factory. In addition, inventory management can be performed for each header prefab unit U, which is easy.

In the factory, since the work for inserting the liquid feed pipe 19 and the buffer layer 20 into the sheath pipe 18 can be performed with a sufficient work space secured, the work is substantially linear or The liquid supply pipe 19 and the like can be inserted into the sheath pipe 18 with a large bending radius, and the insertion work becomes extremely easy, and damage to the buffer layer 20 can be prevented.

Also, a sufficient work space is secured for the operation of connecting the liquid feed pipe 19 to the header 12, attaching the connection tool 30 to the liquid feed pipe 19, and processing the pipe end of the sheath pipe 18. Work can be performed quickly and easily, and mounting failure does not occur. In addition, when the sheath tube header prefabricated unit U is shipped, a detailed inspection can be performed at the factory,
At the construction site, only a simple test is required, and the reliability of piping construction is improved.

Further, since the liquid supply pipes 24 with sheath pipes are cut to a required length in advance, the sheath pipe 18 and the liquid supply pipes 1 are cut.
9 and material loss of the buffer layer 20 hardly occurs. In particular, in recent years, there are many buildings in which water facilities are concentrated in a small space such as a one-room apartment, and in the piping work in these buildings, it is necessary to standardize the length of the liquid supply pipe 24 with sheath pipe. Therefore, it is extremely advantageous to cut the liquid transfer pipe 24 with a sheath pipe into a required length in advance to form a prefabricated unit.

[0032]

As described above, according to the method for constructing a liquid transfer pipe with a sheath tube of the present invention, since the sheath tube is wound into a coil to form a prefabricated unit, the prefabricated unit is transported by one person. As a result, it is not necessary to carry long bundled products of the sheath tube to the construction site, the labor required to transport the bundled products can be reduced, and the storage space can be saved. Space can be provided. Furthermore, at the construction site, there is no need to insert the liquid feed pipe into the sheath pipe, connect the liquid feed pipe to the header, and cut the sheath pipe or liquid feed pipe, which speeds up the on-site pipe construction. And it can be performed easily.

On the contrary, since the above-mentioned work which can be omitted at the construction site can be performed with a sufficient work space secured, the insertion work, the connection work and the cutting work can be performed easily and accurately, and Material loss in the pipe and the liquid feed pipe can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of piping construction by a sheath pipe construction method together with the configuration of a liquid feed pipe with a sheath tube.

FIGS. 2 (A) and 2 (B) show an example of an embodiment of a method for constructing a liquid sending pipe with a sheath tube according to the present invention, and FIG. 2 (A) shows a sheath tube header before construction. FIG. 1B is a schematic configuration diagram showing a prefabricated unit, and FIG. 1B is a schematic configuration diagram showing a state where the sheath prefabricated unit is carried into a construction site and constructed.

[Explanation of symbols]

 11, 13 ... water supply pipe 12 ... header 17 ... faucet 18 ... sheath pipe 19 ... liquid feed pipe 20 ... buffer layer 21 ... joint 24 ... liquid feed pipe with sheath pipe 30 ... connector U ... sheath pipe header prefabricated unit C … Coil body

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Eiichiro Adachi 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Inside Furukawa Electric Co., Ltd. (56) References JP-A-5-170163 (JP, A) JP-A-Hei 6-299577 (JP, A) Japanese Utility Model 4-50463 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E03C 1/02

Claims (3)

(57) [Claims] 1. A hollow tubular sheath tube (18) having a predetermined length.
Liquid delivery with sheath tube through liquid delivery pipe (19) of predetermined length
Connect one end of the liquid supply pipe (19) of the pipe (24) to a water supply pipe.
Branch of header (12) connected to (11,13)
Sayah tube header prefabricated unit connected to (25)
(U) is prepared, and the sheath tube header prefabricated unit (U) is installed on a construction site.
After carrying in, at the construction site, the header (12)
The upper support base (27) for fixing the header base (29)
The header mount (2
9) One-touch mounting on the lower support (28), and the sheath tube of the sheath prefabricated unit (U).
Attached liquid feed pipe (24) is installed according to a predetermined pipe route
Method of liquid transfer piping with sheath pipe. 2. A support support is provided in advance on a piping route of the construction site.
The dollar (36) is arranged in a predetermined route, and the liquid sending pipe (24) with a sheath pipe is connected to the support saddle (3).
6) One-touch fitting with the sheath tube
Arrange the liquid feed pipe (24) according to a predetermined pipe route.
A method for constructing a liquid sending pipe with a sheath pipe according to claim 1. 3. The sheath prefabricated unit (U) for a sheath tube.
Wind the liquid transfer pipe (24) with a sheath pipe in a coil shape and
(C), and at the construction site, the coil body (C) is routed to a predetermined piping route.
The method for constructing a liquid feeding pipe with a sheath pipe according to claim 1 or 2, wherein the wire is drawn while being unwound along the line .