JPH1026259A - Construction method of plastic pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten construction time at site greatly by constructing plastic piping for supplying water and hot water as a pipe member in which a part of thermal insulation material layers of two sets of plastic piping of which outer periphery is covered with the thermal insulation material layer is bonded mutually when the plastic piping are constructed. SOLUTION: As for a plastic piping 10 such as polybutene pipe, its outer periphery is covered with a thermal insulation material layer 11 so that cold water which passes the inside thereof is not warmed by temperature around it and that hot water is not cooled by temperature around it. When these plastic piping 10 for supplying water and hot water are constructed, they are constructed as a pipe member in which a part of the thermal insulation material layers 11, 11 of two sets of the plastic piping 10, 10 is bonded mutually. Consequently, the piping work along a pipe route and the fixing work at a fixed position can be done at one time to improve the construction work. Moreover, it is preferable that an inner layer of the thermal insulation material layer 11 is a crosslinked polyethylene foam layer or a polypropylene foam layer and its outer layer has a double layer structure of polyethylene foam layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a plastic pipe. More specifically, the present invention relates to a method for constructing a water supply / hot water supply pipe mainly used for a general house, an apartment house, a commercial building, or the like, and to a method for constructing a plastic pipe member for simplifying construction on site.

[0002]

2. Description of the Related Art Conventionally, prefabricated building methods have been widely used for general houses, apartment houses, hotels and commercial buildings for the purpose of rationalizing construction work. In the prefabricated building method, each unit, for example, one unit for toilet, bath and toilet, one unit for kitchen and washing machine, etc.
Each unit is manufactured at the factory, floors, walls, ceilings, etc. are also manufactured at the factory. Some of these are assembled on the belt conveyor at the factory, and the rest are transported to the construction site. To the building site and assemble it into the desired building.

[0003] In such a prefabricated building method, since the equipment in the water surrounding unit is almost the same, the shape and size of the piping are almost the same. However, since these pipes are formed at the time of assembling each unit, it is required to complete them in a very short time. Also, in apartment houses and hotels, the internal structure is standardized for each house and each room, so that plumbing around water is also unified.
However, plumbing work is concentrated at one time, and it is necessary to complete the subsequent processes in a very short time. In particular, at construction sites where many water-related facilities are installed compactly in a small space, such as apartment houses, there is a strong demand for shortening the process due to the balance with processes of other industries. It was necessary to shorten the inspection time.

[0004] In order to shorten the time for such piping work, a header construction method and a sheath pipe header construction method have been conventionally proposed and put into practical use. "Header construction method" refers to connecting a flexible liquid supply pipe or the like to each of a plurality of branch ports provided in a header connected to a main water supply pipe, and connecting the liquid supply pipe to a building slab. It is a method of laying on a surface or the like and guiding it to each faucet device (destination) at a desired place. According to this method, it is possible to shorten the time of piping work, but further shortening is required, and for a piping in which a flexible liquid sending pipe of a predetermined length is connected in advance to a plurality of branch ports of the header. An assembly of members has been proposed (see JP-A-7-158128).

[0005] The "Saya pipe header method" is a technique for laying a liquid feed pipe on a floor wall of a building from a header connected to a water supply pipe to a desired place, and a tubular member ( This is a construction method in which a sheath tube is laid, and then a flexible liquid feed tube is inserted into the tubular member (sheath tube). According to this method, since the flexible liquid sending pipe is not stepped on by an operator or directly touches the slab surface, it is not damaged, and no skill is required for piping work.
Although there is an advantage that construction can be easily performed even by non-experts, there are problems such as carrying in and transporting in the case of a long length, and a problem of securing a work space at a construction site. In order to solve such a problem, a flexible liquid feed pipe having a predetermined length is inserted into a sheath pipe having a predetermined length, and one end thereof is connected to a plurality of branch ports of the header in advance. A method has been proposed in which a piping member is constructed as a sheathed pipe header prefabricated unit wound in a coil shape (Japanese Patent Laid-Open No. 7-19949).
No. 5).

[0006] According to these proposed methods, the construction time of piping can be reduced to some extent. But,
For example, in the case of a water supply unit with water supply and hot water supply in the same place such as a kitchen, washroom, bathroom, etc., the water supply pipe and hot water supply pipe must be separately piped and constructed, The complexity of such construction work is not reduced by the above-mentioned improvement method. The plastic pipes are printed with letters and colored lines on the surface so that they can be distinguished between water supply pipes and hot water supply pipes, but they must still be constructed separately.

[0007] As pipes for supplying and supplying water at the same place as described above, (1) a pipe for supplying water and a pipe for supplying hot water are arranged in contact with each other, and both pipes are collectively covered with a heat insulating material; 2) It has been proposed that a heat insulator is interposed between a water supply pipe and a hot water supply pipe, and these are collectively covered with a heat insulating material. However, in such a floor heating construction pipe, the water supply pipe and the hot water supply pipe are arranged in contact with each other, or the heat insulation between both pipes is insufficient, and the cold water is heated by the hot water or the hot water is heated. However, it has a drawback that it is cooled by cold water, and is not suitable for use as it is as a water supply pipe or a hot water supply pipe.

[0008]

SUMMARY OF THE INVENTION In view of such circumstances, the inventors of the present invention have constructed water supply piping and hot water supply piping using plastic pipes mainly used for buildings such as ordinary houses, high-rise houses, hotels and commercial buildings. As for the method, the present invention was completed as a result of intensive studies for the purpose of providing a method of constructing a plastic pipe which is simple in construction on site and can greatly reduce the construction time. That is, the present invention aims at the following. 1. To provide a method for constructing plastic pipes that can significantly reduce construction time. 2. An object of the present invention is to provide a method of constructing a plastic pipe capable of supplying cold water and hot water to a target place with a minimum effect of cold water and hot water from the other pipe.

[0009]

In order to solve the above-mentioned problems, according to the present invention, when constructing a plastic pipe for water supply / hot water supply, a heat insulating material layer of two sets of plastic pipes whose outer periphery is covered with a heat insulating material layer is provided. The present invention provides a method for constructing a member for plastic piping, characterized in that a part of the member is constructed as a piping member bonded to each other.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
In the present invention, examples of the plastic pipe include a pipe that can be connected mechanically or by fusion such as a crosslinked polyethylene pipe and a polybutene pipe. Among them, a crosslinked polyethylene tube is preferable. The plastic pipe is preferably provided with printed characters, colored lines, and the like on its surface so that the pipe for water supply and the pipe for hot water supply can be distinguished.

[0011] In the method of the present invention, the outer periphery of the above-mentioned plastic pipe needs to be covered with a heat insulating material layer. The insulation layer functions to keep the cold water from being heated at the surrounding temperature and the hot water from cooling at the surrounding temperature. The heat insulating material layer preferably has a two-layer structure in which a heat-resistant heat insulating material layer is formed on an inner portion directly in contact with the plastic pipe, and a normal heat insulating material layer is formed on the outside thereof. To make the heat insulation layer of the inner part heat-resistant, plastic pipes should be 90 ° C
This is to prevent heat deterioration when the above hot water is passed.

Examples of the heat-resistant heat-insulating material layer include a crosslinked polyethylene foam, a polypropylene foam, and glass wool. Since the plastic pipe member is wound in a coil shape and stored and transported, a plastic foam such as a crosslinked polyethylene foam or a polypropylene foam is preferable. As the heat insulating material layer formed outside the heat resistant heat insulating material layer, a polyethylene foam may be used. The thickness of the heat-resistant heat-insulating material layer and the thickness of the outer heat-insulating material layer can be variously selected depending on the diameter of the plastic pipe, the type of liquid flowing through the pipe, and the like. The surface of the outer heat-insulating material layer is covered with another plastic sheet having excellent thermal adhesion such as polyvinyl chloride, ethylene / vinyl acetate copolymer or the like, and is adhered to the surface of the plastic sheet heat-insulating material layer.

There is no particular limitation on the method of manufacturing the two-layer heat insulating material layer. When the insulation layer is a plastic layer,
It is preferably produced by an extrusion method. In order to prepare a plastic pipe whose outer periphery is covered with a heat insulating material layer, it is preferable to separately prepare a heat insulating material layer having a tubular two-layer structure and insert the plastic pipe inside the pipe. When the heat-resistant heat-insulating material layer is made of glass wool, its surface is preferably covered with a plastic film excellent in easiness, and if necessary, its surface is covered with a polyethylene foam or the like. These operations may be performed at a construction site, but are preferably performed at a factory or at a work site other than the construction site.

In the method of the present invention, a part of the heat insulating material layers of the two sets of plastic pipes are bonded to each other to form a pipe member, and this pipe member is constructed at a construction site. Adhesion of the two sets of plastic pipes is preferably performed by heat-sealing a part of the surface of the heat insulating material layer of the two sets of pipes, but a double-sided adhesive tape is attached to one of the two sets of pipes. A method of bonding the other tube, a method of bonding using an adhesive, and the like can be used. The tape can be wound at regular intervals so that the bonded pipe member does not peel off. The bonding may be performed at a construction site, but is preferably performed at a factory or at a work place other than the construction site.

[0015] The above-mentioned piping member is used at the same time for construction in a place where water supply and hot water supply are required. Examples of places where water supply / hot water supply is required include water supply / hot water supply for kitchen, water supply / hot water supply for bath, water supply / hot water supply for shower room, water supply / hot water supply for vanity stand, and the like. The above-mentioned piping members are wound in a coil shape for each application, a destination label (application name label) is attached, and the coil members wound in a coil are stored in a set in a cardboard box. It is convenient to specify the destination of the piping member when transporting and piping.

In order to construct the above-mentioned piping members in accordance with the method of the present invention, first, the types and numbers of the piping members required for one construction unit (one for one house, one room, etc.) are individually stored in a cardboard box. Check and prepare at the time you want to. Next, carry these cardboard boxes to the construction site, check the pipe members that match the destination of the faucet / hot water supply equipment on the display of the cardboard box, take out them, reconfirm with the pipe member destination display label, One end of the member is identified for water supply or hot water supply by the color of the surface of the plastic pipe or printed characters, and is fixed to the installation location of the water tap and hot water tap, respectively. Uncoil the pipe member wound in a coil shape along a predetermined pipe route, pipe it, fix it in place with a corner vent, pipe saddle, etc., and color or print the other end of the pipe member on the surface of the plastic pipe Check for water supply and hot water supply by letters,
Fix to the water supply header and hot water supply header branch respectively.

Conventionally, when constructing pipes for water supply and hot water supply, it is necessary to unwind these pipes separately along a pipe route and fix them at fixed positions by corner vents, pipe saddles and the like. Water supply and hot water supply pipes had to be separately constructed. When the pipe member is constructed according to the method of the present invention, since the water supply pipe and the hot water supply pipe are bonded to each other with a heat insulating material layer, the pipe work along the pipe route, a corner vent, a pipe saddle, etc. The fixing work to the position only needs to be done once, the construction work is easy and the construction time can be greatly reduced.

The equipment to be used when the piping member is constructed according to the method of the present invention is a water-around unit provided with water supply / hot water supply for buildings such as general houses, apartments, high-rise commercial buildings, and high-rise business hotels. is there. Water around the water supply and hot water supply, kitchen, washroom, bathroom,
Although a shower room and the like can be mentioned, the present invention is not limited to these examples.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view cut at a right angle to the length direction of an example of a pipe member used in the construction method according to the present invention, and FIG. 2 is a diagram of a general house constructed by the construction method according to the present invention. It is an outline perspective view of an example in a water circumference unit.

In FIG. 1, 10 plastic tubes, 11
Is a heat insulating material layer, and 12 is a bonding part. In FIG. 2, a hot water supply header 22 is connected to a hot water supply pipe 21 through which hot water from a water heater 20 is introduced, and a water supply side header 24 is connected to a water supply pipe 23 through which tap water is introduced.
The plurality of hot water pipes connected to the header 22 on the hot water supply side and the plurality of water pipes connected to the header 24 on the hot water supply side are respectively guided to faucet devices provided at a plurality of locations in the dwelling unit. Pipe members 25, 26, 27, 28 in which a water supply pipe and a hot water supply pipe are covered with a heat insulating material layer. In the illustrated example, the piping member covered with the heat insulating material layer is a sink, a sink, a bathtub,
It is used as a pipe to the shower. Since hot water is not supplied to the washing machine and the toilet, only the water supply pipes 29 and 30 are provided.

[0021]

The present invention has the following particularly advantageous effects, and its industrial value is extremely large. 1. When the pipe is constructed by the method of the present invention, the pipe for water supply and the pipe for hot water supply are bonded to each other, so that the pipe work along the pipe route, the corner vent, the fixing work at a fixed position by a pipe saddle, etc. Only once, the construction work is easy and the construction time can be greatly reduced. 2. In the pipe constructed by the method of the present invention, since the plastic pipe through which water or hot water passes is covered with the heat insulating material layer, cold water passing through one pipe and hot water pass through the other pipe. Cold water and hot water can be supplied to the destination without being affected.

[Brief description of the drawings]

FIG. 1 is a sectional view cut at a right angle to a longitudinal direction of an example of a pipe member used in a construction method according to the present invention.

FIG. 2 is a schematic perspective view of one example of a water-around unit of a general house constructed by the construction method according to the present invention.

[Explanation of symbols]

10: plastic pipe 11: heat insulating material layer 12: bonded portion 14, 15: heat resistant heat insulating material layer 20: water heater 21: hot water supply pipe 22: hot water supply side header 23: water supply pipe 24: water supply side header 25, 26, 27, 28: pipe member covered with heat insulating material layer 29, 30: water supply pipe

Continued on the front page (72) Inventor Fumio Niida 5-13-5-5 Shirayama, Toride-shi, Ibaraki 614 (72) Inventor Tsutomu Eguchi 3-19-8, Hanazakikita, Kazo-shi, Saitama

Claims (2)

[Claims] 1. A construction in which a plastic pipe for water supply / hot water supply is constructed as a pipe member in which a part of a heat insulating material layer of two plastic pipes whose outer circumferences are covered with a heat insulating material layer is adhered to each other. A method for constructing a member for plastic piping characterized by the following. 2. The member for plastic piping according to claim 1, wherein the heat insulating material layer has two layers of an inner layer being a crosslinked polyethylene foam layer or a polypropylene foam layer and an outer layer being a polyethylene foam layer. Construction method.