JPH07293745A - Method for piping - Google Patents

Abstract

PURPOSE:To greatly reduce the time to execute the piping by removing a closing plug from an opening of a joint after the leak test with the fluid pressure in the piping, and mounting an instrument such as a faucet on the part. CONSTITUTION:Water distributing pipes 12 made of flexible material of the respectively prescribed length are mounted on a plurality of distributing ports of a water distributing header 11, and a joint 13 is mounted on the other end of each pipe 12 to make a piping assembly. A closing plug is mounted on the opening of each joint 13 of this piping assembly, and the fluid pressure is applied to the inside of the piping assembly to carry out the leak test, and the piping assembly is made the piping system to be mounted on a pre-fabricated house unit. Then, the closing plug is removed from the opening of the joint 13, and the instrument such as a faucet is mounted on the part. This greatly reduces the time to execute the piping. Because the leak test is carried out when the piping assembly is assembled, the possibility of occurrence of the leakage after the piping is completed is also reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply pipe mainly used for houses, and more particularly to a pipe method suitable for prefabricated houses.

[0002]

2. Description of the Related Art In a prefabricated house, each unit of the house, for example, kitchen, washroom, bath, toilet is one unit, and dining is one unit. Assembled into a house. When making these units at the factory, we assemble the underfloor panels, wall panels, and ceiling used for the units. This assembly is performed on a belt conveyor or a trolley.

Since the arrangement of the devices in the water around unit of such a prefabricated house is almost the same, the shape and size of the pipes are almost the same. However, since this piping is done at the time of assembling the unit, it is required to be completed in an extremely short time.

Also, in the case of an apartment house, since each house has a standardized internal structure, the plumbing around water is also in a unified form. However, the piping work is concentrated at one time, and it is necessary to perform the work in a short time until the subsequent process.

In order to shorten the piping construction time, the header construction method has come to be adopted. The header receives cold and hot water for each house, and one of the multiple water outlets attached to the header
Connect flexible tubing from one piece to each device. Although the header construction method has shortened the piping construction time, it is required to further shorten the piping construction time.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a piping method for a piping member which can significantly reduce the piping construction time and can perform the plumbing work for one unit in several tens of minutes. In addition, it provides a piping method that prevents foreign matter from entering the piping during transportation and construction and facilitates a pressure leak test.

[0007]

According to the piping method of the present invention, a water distribution pipe made of a flexible material having a predetermined length is attached to each of a plurality of water distribution ports of a water distribution header, and the other end of each pipe is attached. To form a piping assembly, attach a closing plug to the opening of each fitting of this piping assembly, apply fluid pressure to the inside of the piping assembly to perform a leak test, and pre-assemble this piping assembly. It is characterized by installing piping in a housing unit, then applying a fluid pressure to the inside of the piping to perform a leak test, then removing the closing plug from the opening of the fitting, and installing a device such as a faucet in that part It is a thing.

[0008] Here, the length of the water distribution pipe made of a flexible material is set to a predetermined length, but this is from the position of the water distribution header to be installed to the position of equipment such as a faucet on the prefabricated housing unit. It means the length that can be connected by the water distribution pipe.

This water distribution header normally has one header water inlet and a plurality of water outlets from the header. The cold water header has five water outlets, and the hot water header has four water outlets. Often. If necessary, attach a pipe of a certain length to the water outlet of the header via a male adapter. In addition, a blind plug is screwed into the unnecessary water outlet to stop the water. In the case of a hot water header, a header cover can be attached to keep warm or prevent burns. An elbow is attached to the water inlet of the header if necessary to facilitate connection with the water supply pipe.

Bronze casting and polyvinyl chloride are often used as the header. When these headers are used, the connection with the water distribution pipe is screwed or mechanically connected. When using a header made of polyethylene, polybutene, or the like, it is desirable to use the same material for the pipes and to electrically fuse the pipes.

The water distribution pipe used in the present invention includes a polybutene pipe, a pipe which can be connected mechanically or by electric fusion such as a polyethylene pipe, a stainless steel corrugated tube (SSCT), a copper pipe, and an aluminum pipe. It is possible to use a metal reinforced polyethylene pipe whose inner and outer surfaces are coated with medium density polyethylene or cross-linked polyethylene, or a stainless steel coiled tube (SCT) that is thinner than the stainless steel pipe for general piping specified in JIS G3448. .. Of these pipes, copper pipes, metal-reinforced polyethylene pipes, SCTs, etc. are used when it is necessary to maintain self-supporting property and bending.

[0012] In order to prevent scratches during construction and to prevent dew condensation around the pipes, these pipes are often contained in a sheath pipe made of polyvinyl chloride or the like. When fitting the water distribution pipe in the sheath pipe, cover the pipe between the header and the equipment connection joint with the sheath pipe, and then attach the equipment connection joint to the pipe.

The end of the water distribution pipe opposite the header is
Water sink / hot water tap for kitchen sink, water / hot water tap for bath, water / hot water tap for vanity, flush adapter for connecting to flush of toilet or washing machine or fitting connection fitting such as flush elbow In order to prevent foreign matter from entering the opening screw portion of these appliance connection joints during transportation and construction, a closing plug is screwed. The closure plug is a molded product of polyethylene, polybutylene, polyvinyl chloride, etc. It has a screw that can be screwed into the opening screw part of the instrument connection joint, and it is an O-ring to close the instrument connection part opening in a watertight manner. Is attached. Equipment connection joints are often made of copper alloys like water taps, and if the closure plug attached to this is a resin molded product, the closure plug is not a reusable one, but it is sufficient to use it once.

A water distribution pipe of a predetermined length is attached to the water distribution port of the water distribution header, a fitting is attached to the other end of the pipe, and the opening of the fitting is closed with a closing plug to form a piping assembly. And perform a leak test. The piping assembly that passed the leak test is attached to the prefabricated housing unit, piped, and fluid pressure is applied to the pipe again to perform the leak test. Remove the closure plug from the opening of each fitting and attach a faucet or other device to that part. In the leak test, a pipe for applying a fluid pressure and a pressure gauge are connected to the water inlet of the water distribution header, and the presence or absence of a leak can be known by a change in the pressure after a predetermined time is applied. Instead of the water receiving port of the water distribution header, the pressure of the fluid can be applied to the water distribution header through one of the water distribution pipes connected to the water distribution port.

[0015]

According to the present invention, when a pipe assembly is manufactured,
Since a closing plug is attached to the opening of the joint and the subsequent handling and leakage test are performed, there is no risk of dust or foreign matter entering the piping during the handling. Also, since the leak test is performed when the pipe assembly is assembled, the possibility of leakage occurring after the pipe is greatly reduced. After assembling the house, the closure plug is removed and a device such as a faucet is attached, but the removed closure plug may be disposed of there.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a situation in which a leak test is conducted after an assembly 1 of a piping member is assembled according to the present invention.

The piping member assembly 1 is provided with a water distribution header 11, a pipe 12 (for example, a polybutene pipe) connected to the water distribution port, and a faucet adapter 13 or a faucet elbow attached to the end of the pipe. ing. A sheath pipe is fitted around the outer periphery of the pipe for pipe protection, and a rising corner pipe 15 is attached to the rising portion at the end of the sheath pipe. The openings of the faucet adapter 13 and the faucet elbow 14 are screwed with a closing plug as shown in FIG. 2 when the pipe member is assembled. A pipe for applying water pressure or air pressure to the inside of the assembly 1 is attached to the water inlet of the header, and the internal pressure can be read by a pressure gauge. For example, by applying an air pressure of 5 kg, it is possible to know whether or not there is a leak by looking at the pressure change after 30 minutes have passed.

After assembling such an assembly of piping members in a factory, as shown in FIG. 3, the header bracket 3 and the hot water distribution headers 11 and 16 are removed to wind up the pipe. Send the wound assembly to the place where piping work will be performed. As the place where the plumbing work is done, there are a construction site where standardized houses are gathered like an apartment house, and a factory where a water supply unit of a prefabricated house is made. Figure 4
Is the floor part of the water supply unit of a prefabricated house,
After attaching the header bracket 3 to the underfloor panel, the cold water pipe and the hot water pipe are extended. Attach the start-up corner pipe 15 to the place where the kitchen sink is attached,
Hold the faucet adapter 13. Similarly, a vanity,
Hold each faucet adapter by extending the pipe to the point where the bath or toilet is attached. The stretched tube is secured to a suitable location on the floor with a fixture, such as a saddle band. If the length of the pipe is a little longer, you can slacken it on the floor.

A pipe for applying water pressure or air pressure to the water inlet of the water distribution header is attached to the pipe thus constructed, and a leak test is conducted. After that, remove the closure plug attached to the joint and attach a device such as a faucet to the part.

[0020]

The piping time can be extremely shortened by piping according to the present invention. Also, since the leak test is performed when the pipe assembly is assembled, the possibility of a leak occurring after the pipe is significantly reduced. The closure plug can be disposable and does not need to be retrieved.

[Brief description of drawings]

FIG. 1 is a diagram of a leak test of a piping assembly according to the present invention.

FIG. 2 is a front view of a closing plug used in the present invention.

FIG. 3 is a side view of a rolled up assembly of the piping member of the present invention.

FIG. 4 is a perspective view of an example of piping using an assembly of piping according to the present invention.

[Explanation of symbols]

 11,16 Header 12,17 Pipe 13 Joint

Claims (1)

[Claims] 1. A water distribution pipe made of a flexible material of a predetermined length is attached to each of a plurality of water distribution ports of a water distribution header, and a joint is attached to the other end of each pipe to form a piping assembly. , Install a closing plug in the opening of each fitting of this piping assembly, apply a fluid pressure to the inside of the piping assembly to perform a leak test, mount this piping assembly to a prefabricated housing unit, and perform piping, then After performing a leak test by applying fluid pressure to the pipe, the closing plug is removed from the opening of the joint, and a device such as a water faucet is attached to the portion.