JP3098159B2 - Flexible structure pipeline - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible conduit.

[0002]

2. Description of the Related Art When laying a pipeline in the ground where a river or the like exists, or when laying a pipeline in the ground where it is connected to a wall of a manhole, the ground may be submerged. At the same time, these pipelines may sink. To address such possibilities, flexible conduits are often laid in these locations.

[0003] As a conventional flexible structure pipe, a pipe having a flexible pipe joined between a pair of rigid pipes is known. In this case, joining flanges are formed at both ends of the flexible tube, and corresponding joining flanges are also provided at ends of a pair of rigid tubes joined to both ends of the flexible tube. Are formed. By using these flanges, the flexible tube and the rigid tube are joined to each other.

[0004] Conventionally, there has been known an apparatus in which a secondary lining is formed by a pipe inside a primary lining constituted by a plurality of segments. As this primary lining,
It is known that a flexible segment is provided in a plurality of segments so as to have flexibility, and a secondary lining tube laid inside a primary lining having such flexibility. As the channel, it is appropriate to use a channel provided with a flexible tube as described above. Then, in that case, a flexible tube in the pipe line of the secondary lining is arranged at a position corresponding to the flexible segment of the primary lining.

[0005]

However, since the pipe line of the secondary lining has a flange at the flexible pipe portion, the maximum outer diameter of the pipe line is smaller than the outer diameter of the pipe body. It will be big. As a result, there is a problem that when the pipe line with the flange is laid as a secondary lining inside the primary lining, a large dead space is generated between the primary lining and the secondary lining.

Accordingly, the present invention solves such a problem, and when laying a flexible secondary lining tube inside a primary lining having a flexible segment, a large dead space is generated. The goal is not to.

[0007]

According to the present invention, a primary lining is formed by a plurality of segments including a flexible segment, and a secondary lining is formed inside the primary lining by a conduit. A pipe having a socket formed by fitting and fixing a sleeve-like member to one end of a pipe body, and a pipe having flexibility. The flexible tube is formed with openings at both ends of the flexible tube, and the flexible tube is arranged at a position corresponding to the flexible segment of the primary lining, and a pair of the tube members is formed. The flexible pipe and the pair of pipes are joined to each other by fitting the receiving ports to the insertion ports of the flexible pipes via a sealing material.

[0008]

According to such a construction, openings are formed at both ends of the flexible tube, and the openings are fitted into the sleeve-like receiving openings of the tube, so that the two ends are formed. Next, the pipes constituting the lining are joined together. For this reason,
The maximum outer diameter of the secondary lining tube is equal to the outer diameter of the sleeve-shaped receptacle. The sleeve-shaped socket has a diameter enough to be fitted and fixed to the tube body of the tube, and to be fitted to the insertion opening of the flexible tube via a sealing material. It is not necessary to have a large diameter like a conventional flange. For this reason, the difference between the inner diameter of the primary lining and the outer diameter of the body of the pipe of the secondary lining, that is, the dead space between the primary lining and the secondary lining becomes extremely small.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 11 denotes a primary lining, in which a plurality of segments 12 are connected in a circumferential direction and a longitudinal direction so as to have a circular cross section. This primary lining
A known flexible segment 13 is disposed on a part of the length in 11 around the entire circumference. The flexible segment 13 is configured such that a plurality of pieces constituting the segment are loosely joined by waterproof rubber or the like, so that a certain degree of bending and expansion / contraction is possible.

Inside the primary lining 11, a small distance in the radial direction from the inner peripheral surface of the primary lining 11
Are arranged concentrically. The secondary lining 14 is formed by connecting a plurality of resin tubes 15 in order, and a flexible tube 16 is specially arranged at a position corresponding to the flexible segment 13 of the primary lining 11.

As shown in detail in FIGS. 3 and 4, each of the resin tubes 15 has a sleeve-shaped member fitted to one end of the tube body via a rubber ring 20 and fixed thereto. The mouth 17 is formed. A thin rubber sealing member 18 is attached to the inner periphery of the opening 17 on the opening end side. Therefore, by inserting the insertion port 19 at the other end of each pipe 15 into the reception port 17 of the other pipe 15, each of the pipes 15 is joined to each other in a state where the space between these reception port insertion ports is sealed. become.

FIG. 5 shows a detailed structure of an example of the flexible tube 16. As shown, the flexible tube 16 has steel insertion holes at both ends.
21 are connected to each other by a thick rubber sleeve 22. Inside the rubber sleeve 22, a plurality of steel reinforcing rings 23 are provided at intervals in the length direction of the flexible tube 16. It is buried. For this reason, in the flexible tube 16, the insertion openings 21 can be bent at an arbitrary angle by elastic deformation of the rubber sleeve 22. The inner peripheral surface of the tube 16 is smoothed by forming a rubber lining 24 for surface finishing.

As shown in FIGS. 3 and 4, in the flexible tube 16, a receiving port 17 of a resin tube 15 connected to one end and the other end of the flexible tube 16 is used to insert the flexible tube 16. It is arranged so as to face the mouth 21.

Then, after the flexible tube 16 is arranged on the inner peripheral side of the flexible segment 13 shown in FIG. 1, the insertion port 21 of the flexible tube 16 is covered with the receiving port 17 of the resin tube 15. The resin tube 15 and the flexible tube 16 are joined to each other at a position corresponding to the flexible segment 13 while maintaining a sealed state by the action of the sealing material 18.

In this joined state, the maximum outer diameter of the secondary lining 14 is, as shown in FIGS.
Is equal to the outer diameter of The sleeve-shaped receiving port 17 is externally fitted and fixed to the pipe body of the resin pipe 15 via the rubber ring 20, and is externally fitted to the insertion port 21 of the flexible pipe 16 via the sealing material 18. It suffices if you have enough caliber. Therefore, the amount of protrusion in the radial direction from the outer peripheral surface of the tube body of the resin tube 15 and the outer peripheral surface of the flexible tube 16 can be minimized. Therefore, conversely, the gap between the outer peripheral surface of the tube body of the resin tube 15 or the outer peripheral surface of the flexible tube 16 and the inner peripheral surfaces of the segments 12, 13 of the primary lining 11 can be made as small as possible. And dead space can be significantly reduced.

As shown in FIG. 4, in this joined state, a pair of tubes 15 sandwiching the flexible tube 16 is
Can be mutually bent by the bending action of, and can be expanded and contracted with each other due to the longitudinal displacement between the receiving port 17 and the insertion port 21.

As shown in FIG. 1, the gap between the primary lining 11 and the secondary lining 14 along the pipeline is filled with an air mortar 26 for holding the secondary lining 14 stably. ing. However, the space between the flexible segment 13 and the flexible tube 16 is not filled with air mortar. Instead, a member 27 such as sand or a cushion material that allows the flexible tube 16 to bend is provided. Is filled.

In a place where such a conduit is laid, for example, when a part of the conduit is settled together with the surrounding ground, a bending force acts on the flexible segment 13 and the flexible tube 16 accordingly. However, the conduit in this portion is appropriately bent according to the bending force acting as shown in FIG.

[0019]

As described above, according to the present invention, the pipe line of the secondary lining formed inside the primary lining is fixed to one end of the pipe body by fitting the sleeve-like member into the outside. The flexible tube is formed by forming a tube body having a receiving port formed therein, and a flexible tube. Inserts are formed at both ends of the flexible tube, and the flexible tube is primarily covered. These flexible parts are arranged at positions corresponding to the flexible segments of the work, and the sockets of the pair of pipes are externally fitted to the insertion openings of the flexible pipes via a sealing material. Since the pipe and the pair of pipes are joined to each other, the maximum outer diameter of the secondary lining pipe is equal to the outer diameter of the socket formed of the sleeve-shaped member. It has a diameter enough to be fitted into the opening of a flexible tube fixedly fitted to the part and fitted through a sealing material. Because it is enough, the difference between the inner diameter of the primary lining and the outer diameter of the body of the pipe of the secondary lining can be reduced, and the dead space between these primary lining and the secondary lining is reduced. It can be significantly smaller.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a flexible structure pipe according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which the conduit of FIG. 1 is bent.

FIG. 3 is a longitudinal sectional view showing a state before joining of a secondary lining in the pipeline of FIG. 1;

FIG. 4 is a vertical cross-sectional view showing a completed state of the secondary lining.

FIG. 5 is a detailed view of a flexible tube in the secondary lining.

[Explanation of symbols]

 11 Primary lining 13 Flexible segment 14 Secondary lining 15 Resin tube 16 Flexible tube 17 Receptacle 18 Sealant 21 Insert

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Motoki Ikeyama 2-47, Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka-shi Inside Kubota Corporation (72) Inventor Takamasa Masaka Nishinoyama, Kogo-cho, Konan-shi, Aichi Prefecture No. 55 Seibu Polymer Chemical Co., Ltd. Nagoya Plant (56) References Japanese Utility Model Sho-60-18190 (JP, U) Japanese Utility Model Sho 59-166086 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , (DB name) F16L 27/10 F16L 27/02

Claims (1)

(57) [Claims] 1. A primary lining is formed by a plurality of segments including a flexible segment, a secondary lining is formed by a pipe inside the primary lining, and a pipe of the secondary lining is formed by a pipe. It is composed of a tubular body having a socket formed by fitting a sleeve-shaped member to one end of a body portion and fitting it, and a flexible tube. An insertion opening is formed, and the flexible tube is disposed at a position corresponding to the flexible segment of the primary lining, and the receiving openings of the pair of tubes are respectively inserted into the insertion openings of the flexible tube. A flexible structure pipe, wherein the flexible pipe and the pair of pipes are joined to each other by external fitting through a sealing material.