JPH0653671U - Sheath tube structure - Google Patents

Abstract

(57) [Abstract] [Purpose] A sheath pipe structure in a sheath pipe construction method in which a flexible inner pipe is inserted into a flexible outer pipe to pipe a water supply pipe and a hot water supply pipe. The water hammer prevents the water supply pipe and hot water supply pipe from hitting the outer pipe by the pulsation of the water hammer phenomenon, thereby preventing vibration and noise from being generated in the contact body. A protrusion or rib-shaped support member 2 for holding water and hot water supply pipe 3 formed of a flexible member is provided on the inner peripheral surface of the flexible outer pipe 1 in the circumferential direction and the longitudinal direction in the outer pipe 1. The support members 2 arranged on the outer tube 1 are arranged at substantially constant intervals in the direction so that the water supply and hot water supply tubes 3 can be held in the center of the outer tube.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sheath pipe structure in a sheath pipe method in which an inner pipe is inserted into an outer pipe at a required position to supply water and hot water.

[0002]

[Prior art]

 In plumbing work such as water supply and hot water supply pipes, for example, at the time of building work of a building, an outer pipe is arranged along a predetermined pipe route, and a sheath for passing the inner pipe for water flow through the outer pipe. It may be constructed by adopting the pipe construction method. This sheath pipe construction method is particularly suitable for durability after building, maintenance management, or rationalization of construction during construction in apartment houses, high-rise buildings, hotels, and the like. As the sheath pipe construction method, there are an embedding construction method that is embedded in the concrete in advance and a floor construction method that is installed on the slab. The outer pipes that are installed by the burying method or the floor construction method are flexible corrugated polyvinyl chloride pipes, polyethylene pipes, etc., which are strong in compressive strength and flat strength during concrete pouring. It is firmly fixed to the outer pipe and water pipes, such as cross-linked polyethylene pipes (for water supply) and metal-reinforced cross-linked polyethylene pipes (for hot water supply), are connected to the outer pipes for connection with other groundwork.

[0003]

[Problems to be solved by the device]

 In the above-mentioned buried construction method and floor construction method to be installed on the slab, the outer pipe is firmly fixed in the concrete or on the floor such as the slab, and the flexible outer pipe is a cross-linked polyethylene pipe as an inner pipe (for water supply) When metal-reinforced cross-linked polyethylene pipe (for hot water supply) is inserted, it is difficult to position it in the center of the outer pipe. When the cross-linked polyethylene pipe, etc. comes into contact with the inner peripheral surface of the outer pipe and water or warm water is run through the cross-linked polyethylene pipe, vibration or so-called water hammer occurs due to the flow rate and water pressure, and vibration occurs via the outer pipe. However, such problems may be transmitted to the building side, which may cause discomfort to the occupants (users), and the impact may cause loosening or deterioration of the pipe connections, causing water leakage. The present invention has been proposed in view of the above-mentioned problems of the prior art, and its purpose is to provide a support for buffering the impact in the outer pipe in the piping work such as the water supply and hot water supply pipes by the sheath pipe method. It provides a comfortable living environment by installing a body and eliminating vibrations and water hammer due to flow rate and water pressure by water supply and hot water supply, and a sheath pipe structure that can improve durability such as water leakage and easily perform maintenance and management. is there.

[0004]

[Means for Solving the Problems]

 The present invention is a sheath pipe structure in a sheath pipe construction method in which a flexible inner pipe is inserted into a flexible outer sheath pipe to supply water and hot water, and the above object is achieved. The flexible outer sheath tube is provided with a number of protrusions or rib-shaped support members for holding the inner tube formed of a flexible member on the inner peripheral surface of the flexible outer sheath tube in the circumferential direction and the longitudinal direction of the inner circumference. The inner tube is held in the center of the flexible outer sheath tube by the support material provided on the flexible outer sheath tube, which are arranged at substantially constant intervals in the direction.

[0005]

[Action]

 According to the sheath tube structure of the present invention, the inner surface of the flexible outer sheath tube is provided with the water-supplying material molded by the flexible member and the projecting support member for holding the hot water supply tube in the circumferential direction and the longitudinal direction of the inner circumference of the outer sheath tube. Since the water supply and hot water supply pipes, which are the inner pipes inserted through the outer sheath pipe, are held in the center of the outer sheath pipe at regular intervals by the support material, the water hammer effect is achieved. It prevents the water supply and hot water supply pipes from hitting the outer sheath pipe by the pulsation by. In addition, since the projecting support material molded with a flexible member that is placed inside the outer sheath tube holds the inner tube flexibly by the cushioning action, the inner tube can be supported by following the displacement caused by the pulsation of the inner tube due to the water hammer phenomenon. The material will not be deformed and excessive force will not be applied to the piping system.

[0006]

【Example】

 An embodiment of the sheath tube structure of the present invention will be described with reference to the drawings. 1 and 2 are a side sectional view and an arrow sectional view showing a first embodiment of a sheath tube structure of the present invention, which is made of synthetic resin (for example, flexible corrugated polyvinyl chloride pipe, polyethylene pipe) A projecting support material 2 made of a flexible synthetic resin is planted over the entire inner surface of the outer sheath tube 1, and these support materials 2 are arranged in the circumferential direction and the longitudinal direction in the flexible outer sheath tube 1. Almost at regular intervals. In this case, if the tip of the beard-shaped support member 2 is planted with a slight inclination toward the direction of insertion of the water supply / hot water supply pipe 3 as the inner pipe, the water supply / hot water supply pipe 3 can be smoothly inserted.

3 to 4 are side sectional views and sectional views showing an embodiment of the sheath pipe structure of the present invention. Water supply as a flexible inner pipe, hot water supply pipe 3 and end portion of outer sheath pipe 1 are shown. When the pipe is inserted so that the tip of the support member 2 is spread out, the water supply and hot water supply pipes 3 are provided at the center of the outer sheath pipe 1 by the support members 2 arranged at regular intervals in the longitudinal direction of the outer sheath pipe 1. Be held flexibly. Then, it prevents the water supply and hot water supply pipes 3 from hitting the outer sheath pipe 1 by the beat of the water hammer phenomenon, and prevents the vibration and the impact sound from propagating through the outer sheath pipe 1 in a wide range. It Further, the support member 2 is formed of a long projection of flexible synthetic resin, and flexibly holds the water supply pipe 3 and the hot water supply pipe 3 by a cushioning action. Therefore, the support member 2 follows the water supply due to the water hammer phenomenon and the displacement of the hot water supply pipe 3 due to the pulsation. As a result, the projecting support member 2 is deformed, and an excessive force is not applied to the piping system.

5 to 6 are side sectional views and sectional views showing the structure of the second embodiment of the sheath tube structure of the present invention, in which the inner surface of the outer sheath tube 11 is made of a flexible synthetic resin. A circular washer-shaped (rib-shaped) support member 12 is provided. The support material 12 has a plurality of slits 12b at a substantially constant interval on the periphery of the through hole, and the support material 12 is at a substantially constant interval (interval of about 30 to 50 cm) in the longitudinal direction of the outer sheath tube 11. It is arranged. Then, as shown in the cross-sectional view of FIG. 5, a water supply pipe 13 such as a cross-linked polyethylene pipe or a metal-reinforced cross-linked polyethylene pipe is pushed from the end of the outer sheath pipe 11 to widen the through hole of the support member 12. When it is inserted and piped, the water supply and hot water supply pipes 13 are held at the center of the outer sheath pipe 11 by the support members 12 arranged at regular intervals in the longitudinal direction of the outer sheath pipe 11. Then, it prevents the water supply and hot water supply pipes 13 from hitting the outer sheath pipe 11 by the pulsation due to the water hammer phenomenon, and prevents the vibration and the impact sound from propagating in a wide range through the outer sheath pipe 11. Further, the support member 12 is formed into a circular washer made of a flexible synthetic resin and flexibly holds the water supply and hot water supply pipes 13 by the cushioning action. Therefore, water supply due to the water hammer phenomenon and displacement due to the pulsation of the hot water supply pipes 13 are performed. The support material 12 is deformed following the above, and an excessive force is not applied to the piping system. The shape and arrangement of the support material are not limited to those in the present embodiment, and have a function of flexibly holding the water supply and hot water supply pipes inserted through the outer sheath pipe at regular intervals in the center of the outer sheath pipe. Anything is fine.

[0009]

[Effect of device]

 According to the sheath pipe structure of the present invention, since the water supply and hot water supply pipes inserted through the flexible outer sheath pipe are held at the center of the outer sheath pipe at a constant interval by the support member, the beat due to the water hammer phenomenon occurs. The water supply and hot water supply pipes are prevented from directly hitting the outer sheath pipe, and vibration and impact sound are prevented from propagating to the contact side through the outer sheath pipe to generate vibration and noise. In addition, since the support material formed of a flexible member arranged on the outer sheath pipe cushions water supply and holds the hot water supply pipe flexibly, it supports water supply by the water hammer phenomenon and displacement following the beat of the hot water supply pipe. Since the material is deformed and the pipe system is not subjected to excessive force, damage to the water and hot water supply pipes is prevented.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a first embodiment of a sheath tube structure of the present invention.

FIG. 2 is a sectional view taken along the line A-A ′ in FIG.

FIG. 3 is a side sectional view showing an embodiment of the sheath tube structure of the present invention.

FIG. 4 is a sectional view taken along the line B-B ′ of FIG.

FIG. 5 is a side sectional view showing a second embodiment of the sheath tube structure of the present invention.

6 is a cross-sectional view taken along the line C-C ′ of FIG.

[Explanation of symbols]

 1 Outer sheath pipe 2 Support material 3 Water supply, hot water supply pipe 11 Outer sheath pipe 12 Support material 13 Water supply, hot water supply pipe

Claims (1)

[Scope of utility model registration request] 1. A sheath tube structure in a sheath tube construction method for supplying water and hot water by inserting a flexible inner tube into a flexible outer tube, wherein the flexible outer tube has a flexible inner peripheral surface. A large number of protrusions or rib-shaped supporting members for holding the inner tube formed by the members are arranged at substantially constant intervals along the circumferential direction and the longitudinal direction of the inner circumference of the flexible outer tube to make it flexible. A sheath tube structure characterized in that the inner tube can be held in the center of the flexible outer tube by a support material disposed on the flexible outer tube.