Piping structure and installation method within buildings

Abstract

To provide, aiming at improving piping of a water supply facility, etc. to be installed in an architectural structure and a construction method of the same, a piping structure that does not require working on the piping and the construction method thereof, even if layout of piping, etc. at a construction site is different from a design drawing or a site working diagram.SOLUTION: A piping structure in an architectural structure includes: a branch member 10 mounted to a vertical pipe 40 of the architectural structure; an adapter 20 attached rotatably; and a flexible pipe 30 connected to an instrument 41. If an installation place of the instrument 41 is different from that in the design drawing, the vertical pipe 40 and the instrument 41 can be connected with each other by turning the adapter 20 with respect to the branch member 10 and changing arrangement of the flexible pipe 30.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a piping structure for water facilities and the like installed in a building, and a construction method thereof. [Background technology]

[0002] In buildings such as apartment buildings and commercial facilities, water pipes and other equipment pipes are installed. In buildings with two or more floors, the equipment pipes include vertical pipes that run through multiple floors. In addition, equipment such as water meters are installed on each floor of the building, and construction work is carried out to connect the pipes from the vertical pipes to the equipment.

[0003] Conventionally, during this construction work, a bellows-shaped flexible pipe and adapters to be attached to both ends of the flexible pipe were brought to the construction site, and the flexible pipe was cut to an appropriate length on site and the adapters were attached.

[0004] However, when working on site, there is a risk of leakage from the piping due to processing errors, etc., when attaching the flexible pipe to the adapter. Furthermore, working on site may impose a burden on workers depending on the site environment. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2009-191556 A Summary of the Invention [Problem to be solved by the invention]

[0006] In order to eliminate such inconveniences in on-site work, it is conceivable to prepare pre-assembled piping of a specified length based on design drawings, on-site construction drawings, etc., and then only perform the work of connecting the vertical pipe and the piping adapter at the site. For example, Patent Document 1 discloses a construction method that shortens the construction period by installing a unit box on-site for connecting devices required for a one-room apartment, etc.

[0007] However, at the construction site, the layout of the vertical pipes and equipment often differs from the design drawings and on-site construction drawings. The pre-assembled piping mentioned above is slightly longer than the length shown on the design drawings and on-site construction drawings, but there is a risk that the length of the piping will be insufficient. Conversely, if the actual piping distance is shorter than the design drawings and on-site construction drawings, it may be difficult to manage the piping.

[0008] In view of the above, the present invention aims to improve the piping of water facilities and the like installed within a building, and more specifically, to provide a piping structure and a construction method thereof that do not require any processing of the piping, even if the layout of the piping, etc. at the construction site differs from the design drawings or on-site construction drawings. [Means for solving the problem]

[0009] In order to achieve this object, the piping structure of the present invention is a piping structure that connects equipment piping installed inside a building to equipment installed within the building and connected to the equipment piping, and is characterized in that it comprises a branching member installed on the equipment piping, an adapter having a connection member connectable to the branching member, and a flexible tube having one end connected to the adapter and the other end connectable to the equipment, the adapter is formed to be rotatable around a rotation axis that intersects with the axial direction of the equipment piping at a predetermined crossing angle, and the flexible tube is connected to the adapter at a predetermined connection angle with respect to the rotation axis.

[0010] According to the piping structure of the present invention, the adapter is formed to be rotatable around the rotation axis relative to the branching member, so that when connecting the flexible tube to the equipment, even if the distance between the actual facility piping and the equipment differs from that in the design drawings, the routing of the flexible tube can be changed by rotating the adapter, making installation easier.

[0011] In the piping structure of the present invention, the flexible tube may be rotatable about its own axis relative to the adapter while connected to the adapter. With this configuration, the flexible tube itself can be rotated to change its arrangement.

[0012] In the piping structure of the present invention, the facility pipes may be connected by a butt joint, and the branch member may be formed to be rotatable about a central axis of the facility pipe by rotating the butt joint. With this configuration, the arrangement of the flexible pipe can be changed by rotating the branch pipe relative to the facility pipe.

[0013] In addition, the piping construction method of the present invention is a piping construction method for connecting equipment piping installed inside a building and equipment installed inside the building and connected to the equipment piping, using a branching member installed on the equipment piping, an adapter having a connecting member connectable to the branching member, and a flexible tube having one end connected to the adapter and the other end connectable to the equipment, the adapter is rotatable around a rotation axis that intersects with the axial direction of the equipment piping at a predetermined crossing angle, and the flexible tube is connected to the adapter at a predetermined connection angle to the rotation axis, and is characterized in that the method includes the steps of attaching the branching member to the equipment piping, attaching the adapter to the branching member, and rotating the adapter to adjust the distance between the connecting member and the other end of the flexible tube and connecting the other end of the flexible tube to the equipment.

[0014] According to the piping construction method of the present invention, the branching member is attached to the facility piping, the adapter is attached to the branching member, and the adapter is rotated to adjust the distance between the connecting member and the other end of the flexible tube, and the other end of the flexible tube is connected to the equipment, thereby deforming the flexible tube and changing the layout of the flexible tube. According to this construction method, even if the distance between the actual facility piping and the equipment is different from that in the design drawing, the flexible tube can be easily connected to the equipment.

[0015] In the piping construction method of the present invention, the flexible tube may be rotatable about its own axis relative to the adapter while connected to the adapter, and in the step of connecting the other end of the flexible tube to the equipment, the flexible tube may be connected by rotating it relative to the adapter. According to this construction method, the flexible tube can be connected to the equipment by rotating the flexible tube itself to change its routing.

[0016] In the piping construction method of the present invention, the facility piping may be connected by a butt joint, the branching member may be rotatable about a central axis of the facility piping by rotating the butt joint, and the branching member may be rotated in the step of connecting the other end of the flexible tube to the equipment. According to this construction method, by rotating the branching pipe relative to the facility piping, the flexible tube can be connected to the equipment by changing the arrangement. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is an explanatory diagram showing vertical pipes (facility piping) and equipment installed in a building, and a piping structure according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a partial cross-sectional view showing the piping structure of the embodiment. [Diagram 3] FIG. 1 is an explanatory diagram showing a piping structure and a construction method according to a first embodiment of the present invention. [Figure 4] FIG. 5 is an explanatory diagram showing a piping structure and a construction method according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] A piping structure and a construction method according to one embodiment of the present invention will be described with reference to Fig. 1 to Fig. 4. As shown in Fig. 1, a piping unit 1 (piping structure) according to the first embodiment of the present invention is composed of a branching member 10 attached to a vertical pipe 40, which is equipment piping provided inside a building, an adapter 20 rotatably attached to the branching member 10, and a flexible tube 30 connected in advance to the adapter 20 and connected to equipment 41. The vertical pipe 40 is provided penetrating a floor 42 of the building, and the equipment 41 is fixed to the floor 42 of the building.

[0019] In this embodiment, the branching member 10 is a so-called EF (electrofusion) joint, which is attached by cutting the vertical pipe 40 horizontally to a predetermined length and inserting it between the upper and lower cut surfaces. The connection between the vertical pipe 40 and the branching member 10 is joined by heating and fusing with an electric heating wire in the EF joint. The branching member 10 is formed of a pipe main body 11 with a larger diameter than the vertical pipe 40, and a branch port 12 protruding laterally from the pipe main body 11.

[0020] The adapter 20 is rotatably attached to the branch port 12 of the branch member 10 by the connection member 21. In this embodiment, the adapter 20 is rotatable when the connection member 21 and the elbow 22 are not completely fastened. When the connection member 21 and the elbow 22 are completely fastened, the position of the elbow 22 relative to the branch port 12 is fixed.

[0021] The adapter 20 rotates about a rotation shaft 20a. In this embodiment, the rotation shaft 20a is designed to intersect with the central axis 40a of the vertical pipe 40 at an intersection angle of approximately 90 degrees. The standard value of this intersection angle is 90 degrees, and it can be set to an angle of approximately 80 degrees to 110 degrees as necessary.

[0022] An elbow 22 is attached to the connection member 21 of the adapter 20. As shown in Fig. 2, the upstream side (vertical pipe 40 side) of the elbow 22 is held between the connection member 21 and the cylindrical branch port 12, and a packing 23 is provided at the tip of the upstream side of the elbow 22, as well as a lock ring, a washer, etc. With this configuration, the elbow 22 is rotatable with respect to the branch port 12 with the connection member 21 temporarily fixed.

[0023] On the other hand, one end 30b of the flexible tube 30 is attached to the downstream side (flexible tube 30 side) of the elbow 22 so as to be rotatable around the central axis 30a of the flexible tube 30 itself. This elbow 22 is formed so that the fluid flow path is at an angle of 90 degrees. Therefore, the central axis 30a of the flexible tube 30 is provided so as to form a connection angle of 90 degrees with respect to the rotation axis 20a of the adapter 20. This connection angle, like the intersection angle, can be set to about 80 degrees to 110 degrees as necessary.

[0024] The flexible tube 30 includes a flexible hose 31 having flexibility, and sleeves 32 provided on both ends of the flexible hose 31. An O-ring 33 is attached between the sleeve 32 and the inner circumferential surface on the downstream side of the elbow 22. Furthermore, one end 30b of the flexible tube 30 is positioned by a stop ring 34 with the sleeve 32 inserted into the elbow 22.

[0025] 1, the other end 30c of the flexible tube 30 is connected to a connection member 43 of the device 41, and is rotatably attached to the connection member 43 of the device 41, similar to the one end 30b of the flexible tube 30 shown in Fig. 2. The flexible hose 31 of the flexible tube 30 and the upstream and downstream sleeves 32 are connected to each other by welding.

[0026] Next, an installation method of the present invention will be described with reference to Fig. 3. The installation method of the first embodiment is a method of installing piping using the piping unit 1 shown in Figs. 1 to 3. In Fig. 3, the equipment 41 represented by solid lines shows a state in which it is installed according to the design drawings and on-site construction drawings, and the equipment 41 represented by dotted lines shows a state in which it is installed in a position different from the design drawings and on-site construction drawings.

[0027] The piping unit 1 is designed to have a certain amount of leeway so that the flexible tube 30 is slightly long when the piping unit 1 is installed in a suitable path from the branching member 10 to the equipment 41 according to the design drawings. The length of the flexible tube 30 that is slightly longer due to this leeway can be adjusted by changing the rotation angle of the elbow 22 and the bending position of the flexible tube 30.

[0028] In the construction method of the present invention, a worker first performs a step of attaching the branching member 10 to the vertical pipe 40. In this embodiment, the attachment step of the branching member 10 is performed by cutting the vertical pipe 40 horizontally at two locations and attaching the branching member 10 to the cut portions. In this embodiment, the branch opening 12 of the branching member 10 is configured not to rotate relative to the vertical pipe 40, so when attaching the branching member 10, the direction of the branch opening 12 is positioned according to the design drawings and on-site construction drawings. The attachment of the branching member 10 may be performed in advance when the vertical pipe 40 is installed in the building.

[0029] Next, the worker performs a process of attaching the adapter 20 to the branching member 10. Specifically, the connection member 21 of the adapter 20 is attached to the branching port 12 of the branching member 10. In this embodiment, in a state in which the adapter 20 is temporarily fixed to the branching port 12 of the branching member 10, the elbow 22 is rotatable about the rotation axis 20a relative to the connection member 21 of the adapter 20.

[0030] Next, the worker performs a process of connecting the other end 30c of the flexible tube 30 to the connection member 43 of the device 41 that has been fixed in advance. At this time, the worker rotates the elbow 22 of the adapter 20 and deforms the flexible tube 30 to position the other end 30c of the flexible tube 30 so that it can be connected to the connection member 43 of the device 41, and then tightens and fixes the connection member 21.

[0031] When the equipment 41 is installed according to the design drawings and on-site construction drawings, the adapter 20 and the connection member 43 of the equipment 41 are connected in a substantially straight line, as in the flexible tube 30 shown on the right side in Fig. 3. In this way, when the equipment 41 is installed according to the design drawings, the flexible tube 30 can be simply routed.

[0032] On the other hand, if the equipment 41 is not installed according to the design drawings or on-site construction drawings, for example, as in the flexible tube 30 shown on the left side in Fig. 3, the flexible tube 30 can be changed to accommodate the change in the distance between the adapter 20 and the connection member 43 of the equipment 41 by rotating the adapter 20 with respect to the branching member 10 and bending the flexible tube 30 between the adapter 20 and the connection member 43 of the equipment 41. The rotation angle of the adapter 20 and the shape of the flexible tube 30 can be changed as desired as long as they are shapes that can be accommodated at the construction site.

[0033] 1, the branch port 12 of the branching member 10 may be rotated relative to the vertical pipe 40. The butt connection joint 44 has end joint parts 44b having flange parts 44a fixed to the ends of the upper and lower vertical pipes 40 by butt welding parts 44c, and connects the upper and lower vertical pipes 40 by a two-part arch-shaped housing joint 44d shaped to fit into the flange parts 40a.

[0034] The butt connection joint 44 is attached by attaching a packing 44e to the boundary between the upper and lower end joints 44b, combining a pair of housing joints 44d, and fastening the housing joints 44d with fastening members 44f such as bolts and nuts. The butt connection joint 44 is preferable because it adds more freedom to the arrangement of the flexible tube 30 between the adapter 20 and the connection member 43 of the device 41.

[0035] Next, a second embodiment of the present invention will be described with reference to Fig. 4. In Fig. 4, the equipment 41 shown by solid lines is installed according to the design drawings and the on-site construction drawings, and the equipment 41 shown by dotted lines is installed in a position different from that shown in the design drawings.

[0036] The piping unit 1a (piping structure) of the second embodiment differs from that of the first embodiment in that the branch port 17 of the branching member 15 is rotatable about the central axis 40a of the vertical pipe 40. Since the other points are similar to those of the first embodiment, the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

[0037] The branching member 15 has an appearance that is almost the same as the branching member 10 in Figure 2, but inside, an O-ring (not shown) is provided between the inner surface of the pipe main body 16 and the outer surface of the vertical pipe 40, making the pipe main body 16 liquid-tight with respect to the vertical pipe 40.

[0038] In the construction method of the second embodiment, a worker first performs a process of attaching a branching member 15 to a vertical pipe 40. In this embodiment, since a branch port 17 of the branching member 15 rotates with respect to the vertical pipe 40, when attaching the branching member 15, the branch port 17 can be placed in any position.

[0039] Next, the worker performs a process of attaching the adapter 20 to the branching member 15. Specifically, the connection member 21 of the adapter 20 is attached to the branching port 17 of the branching member 15. In this embodiment, in a state in which the adapter 20 is temporarily fixed to the branching port 17 of the branching member 15, the elbow 22 is rotatable with respect to the connection member 21 of the adapter 20 about the rotation axis 20a.

[0040] Next, the worker connects the other end 30c of the flexible tube 30 to the connection member 43 of the device 41 that has been fixed in advance. At this time, the branch port 17 of the branching member 15 is rotated with respect to the vertical tube 40 to position the branch port 17 at the position indicated by the solid line in Fig. 4. Furthermore, if necessary, the elbow 22 of the adapter 20 is rotated to deform the flexible tube 30, thereby positioning the other end 30c of the flexible tube 30 and the connection member 43 of the device 41.

[0041] When the equipment 41 is installed according to the design drawings and on-site construction drawings, the flexible tube 30 is curved and deformed between the adapter 20 and the connection member 43 of the equipment 41, as in the upper flexible tube 30 in Fig. 4. In this way, when the equipment 41 is installed according to the design drawings and on-site construction drawings, the flexible tube 30 can be simply handled.

[0042] On the other hand, when the equipment is not installed according to the design drawings or on-site construction drawings, such as the equipment 41 on the lower side in Fig. 4, the branch port 17 of the branching member 15 is rotated relative to the vertical pipe 40 and positioned so that the branch port 17 is located at the dotted line position in Fig. 4. Furthermore, if necessary, the elbow 22 of the adapter 20 is rotated to deform the flexible pipe 30, thereby positioning the other end 30c of the flexible pipe 30 and the connecting member 43 of the equipment 41, and connecting the two.

[0043] According to the construction method of the second embodiment, the branching port 17 of the branching member 15 can be rotated relative to the vertical pipe 40, thereby flexibly responding to changes in the fixed position of the equipment 41. In addition, if necessary, the adapter 20 can be rotated relative to the branching member 15 to change the degree of curvature of the flexible tube 30 between the adapter 20 and the connection member 43 of the equipment 41, and the flexible tube 30 can be changed to accommodate changes in the distance between the adapter 20 and the connection member 43 of the equipment 41. In this case, too, the direction of the branching port 17, the rotation angle of the adapter 20, and the shape of the flexible tube 30 can be changed arbitrarily as long as they are shapes that can be handled at the construction site.

[0044] In the above embodiment, the vertical pipe of the water supply equipment is taken as an example of the equipment piping, but the present invention is not limited to this and can also be applied to the piping of a fire extinguishing equipment (such as a sprinkler). In the above embodiment, the vertical pipe 40 is cut and the branching member 10 is attached, but the present invention is not limited to this and a hole may be opened in the side surface of the vertical pipe 40 and the branch port 12 of the branching member 10 may be attached to the hole.

[0045] In the above embodiment, the branch member 10 is an EF joint, but the present invention is not limited to this, and a well-known spigot joint (SP joint) may be used for joining. Other well-known joints may be used for the branch member 10. [Explanation of symbols]

[0046] 1,1a...piping unit, 10,15...branching member, 11,16...pipe body, 12,17...branching port, 20...adapter, 20a...rotating shaft, 21...connecting member, 22...elbow, 23...packing, 30...flexible tube, 30a...center shaft, 30b...one end, 30c...other end, 31...flexible hose, 32...sleeve, 33...O-ring, 34...stop ring, 40...vertical pipe (facility piping), 40a...center shaft, 41...equipment, 42...floor, 43...connecting member, 44...butt joint.

Claims

1. A piping structure that connects an equipment pipe installed inside a building to an apparatus installed inside the building and connected to the equipment pipe, a branching member that is installed on the facility piping; an adapter having a connection member that can be connected to the branching member; and a flexible tube that is flexible and has one end connected to the adapter and the other end that can be connected to the device, The adapter is formed to be rotatable about a rotation axis that intersects with an axial direction of the facility piping at a predetermined intersection angle, the flexible tube is connected to the adapter at a predetermined connection angle with respect to the rotation shaft, A piping structure, characterized in that the flexible tube is rotatable about its own axis relative to the adapter while being connected to the adapter.

2. The piping structure according to claim 1, A piping structure characterized in that the facility piping is connected by a butt connection joint, and the branching member is formed so as to be rotatable around a central axis of the facility piping by rotating the butt connection joint.

3. A piping construction method for connecting an equipment piping installed inside a building to a device installed in the building and connected to the equipment piping, comprising: A branching member to be installed on the facility piping, an adapter having a connection member connectable to the branching member, and a flexible tube having one end connected to the adapter and the other end connectable to the device, the adapter is rotatable about a rotation axis that intersects with an axial direction of the facility piping at a predetermined intersection angle; the flexible tube is connected to the adapter at a predetermined connection angle with respect to the rotation shaft, Attaching the branching member to the facility piping; attaching the adapter to the branching member; and rotating the adapter to adjust a distance between the connection member and the other end of the flexible tube and connect the other end of the flexible tube to the device. the flexible tube is rotatable about its own axis relative to the adapter while being connected to the adapter; A piping construction method, characterized in that in the step of connecting the other end of the flexible tube to the equipment, the flexible tube is rotated relative to the adapter to connect them.

4. The piping construction method according to claim 3, The facility piping is connected by a butt joint, and the branching member is rotatable about a central axis of the facility piping by rotating the butt joint, A piping construction method, comprising the step of rotating the branching member in the step of connecting the other end of the flexible pipe to the equipment.

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