KR20080092109A

KR20080092109A - Lining material and conduit lining method

Info

Publication number: KR20080092109A
Application number: KR1020070035551A
Authority: KR
Inventors: 병권 박; 타카오 카미야마
Original assignee: (주)씨스이엔지
Priority date: 2007-04-11
Filing date: 2007-04-11
Publication date: 2008-10-15

Abstract

An object of the present invention is to provide a lining material which can be easily and smoothly inserted even in a pipeline having a large number of curved portions, and a pipeline lining method using the same. To this end, the lining material 9 with a steel belt is folded so that the flexible tubular lining material 1 impregnated with a thermosetting resin 1 is folded so that the width thereof becomes small and the tape 4 is sandwiched. The steel belt 6 is inserted into the belt loop 5 so as to be detachably attached thereto. In the lining construction of a pipeline, the lining material 9 with a steel belt is first inserted from the main tube 10 into the pipeline of the branch pipe 11. Thereafter, the steel belt 6 is separated from the lining material 1, the lining material 1 is left in the conduit, and the steel belt 6 is pulled out of the conduit, and then the lining material 1 is pressurized from the inside to expand. The lining material 1 is heated in a state of being pressed against the inner circumferential surface of the pipe to harden the thermosetting resin.

Description

LINING MATERIAL AND CONDUIT LINING METHOD}

1 is a cross-sectional view showing the structure of a lining material inserted into a pipeline as it is by the conventional pipeline lining method.

FIG. 2 is a cross-sectional view showing a state in which the lining material of FIG. 1 is folded in an H shape and tied with a tape. FIG.

3 is a cross-sectional view of the belted lining material formed by further attaching a steel belt to the lining material.

It is a side view of the side which attached the steel belt of the lining material with a belt attached.

5 is a side view of the tip portion of the lining material with a belt attached thereto.

It is explanatory drawing which shows the mode which inserts the lining material with a belt into the pipe line of a branch pipe from a main pipe.

(Explanation of symbols for the main parts of the drawing)

1: lining material 2: tube

3: resin absorbent material 4: tape

5: belt loop 6: steel belt

7, 8: seal 9: lining with belt attached

10: Main Building 11: Branch Building

The present invention relates to a lining material used for lining a pipeline for repairing an aging pipeline, and a pipeline lining method using the same.

As a pipeline lining method to repair the pipeline without digging the pipeline when the pipelines such as communication pipes, gas pipes, sewer pipes, water pipes, and electric pipes that are buried under the ground are aging, the tubular lining material impregnated with a thermosetting resin A method of lining a pipeline by heating the lining material in a state in which it is inserted by being pushed into or pulled into it, inflated by air pressure, and pressed against the inner circumferential surface of the pipe, and curing the thermosetting resin of the lining material has been proposed and implemented. As a method of pushing the lining material into the pipe, a method of pushing the lining material while inverting the front and back of the lining material by air pressure is adopted (for example, refer to Patent Document 1 below).

[Patent Document 1] Japanese Unexamined Patent Publication No. 2006-123547

However, in the conventional method for inserting a lining material, it is very difficult to insert into a conduit with a bent portion at a right angle to an angle close thereto. That is, in the method of pushing while reversing, it is not reversed at right angles to the bent portion close to it. In addition, in the dragging method, when the portion of the bent portion increases, the contact resistance of the lining material increases and becomes heavy and cannot be dragged. In addition, if the dragging continues to be pulled, the lining material is stretched or damaged, which significantly degrades the quality of the lining material.

Then, the subject of this invention is providing the lining material which can be inserted easily and smoothly also in the pipeline which has many points bent at right angle to the angle close to it, and the pipeline lining method using the same.

The lining material of the present invention is a flexible tubular lining material impregnated with a thermosetting resin, and is characterized in that a strip member having elasticity and rigidity is detachably attached thereto.

Moreover, the pipeline lining method of this invention removes the said strip | belt-shaped member from a lining material after the 1st process of inserting it into a pipeline by attracting or pushing the lining material of this invention, and the lining material in a pipeline. The second step of pulling the strip-shaped member out of the pipe line, leaving the lining member, and after the second step, the lining material is pressurized from the inside to expand, and the lining material is heated to be pressed against the inner circumferential surface of the pipe to heat the thermosetting resin of the lining material. It is characterized by performing a third step of curing the.

Best Mode for Carrying Out the Invention Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

(Example)

1 shows a lining material for repairing a pipeline. The lining material 1 is comprised as flexible tubular thing formed by covering the outer peripheral surface of the flexible cylindrical resin absorbent material 3 which consists of nonwoven fabrics etc. with the flexible tube 2 which consists of polyethylene etc. The resin absorbent material 3 is impregnated with a liquid, uncured thermosetting resin.

In the conventional pipeline lining method, the lining material 1 is inserted into the pipeline by itself, but in the present embodiment, the lining material 1 is folded and bundled so as to have a smaller width, and the steel belt shown in FIGS. A lining material with a steel belt (hereinafter referred to as a lining material with a belt) formed by attaching it so as to be detachably attached (6) is produced and inserted into the pipeline.

The steel belt 6 has elasticity and rigidity, and provides elasticity and rigidity to the lining material 1 to strengthen the waist of the lining material 1 and to partially cover and protect the lining material 1. It may be made of a thin steel plate, or may be made of a steel wire bundled with a rubber band and coated with rubber or the like.

Moreover, the hole 6a is formed in the front-end | tip part of the steel belt 6 shown in FIG. This hole 6a is for engaging the rope etc. which pulls the lining material 9 with a belt in the case of carrying out the insertion of the lining material 9 with a belt into the conduit.

In manufacture of the lining material 9 with a belt, first, as shown in FIG. 2, the lining material 1 is folded so that a cross section may become H shape. 2 and 4, the tape 4, such as a cellophane tape, is wound in the longitudinal direction of the lining material 1 in the width direction of the lining material 1 at suitable intervals of, for example, several tens of centimeters. Tie up the standing lining material (1). Instead of the tape 4, it may be bundled with a member such as a string.

In addition, the shape in which the lining material 1 is folded is not limited to the H-shape, and the width of the lining material 1 becomes small, and is later expanded when the lining material 1 is pressurized and expanded into a cylinder after the lining material 1 is inserted into the pipeline. It is good if it is an easy shape.

3 and 4, the belt loop 5 is placed in the longitudinal direction of the lining material 1 in each of the two side surfaces over the cross-sectional longitudinal direction of the folded lining material 1. For example, it attaches at the suitable space | interval twice the position of the space | interval of the tape 4. As shown in FIG. The belt loop 5 is guided with a slight margin so that the steel belt 6 does not deviate greatly from the lining material 1 when the lining material is inserted into the pipeline, and is formed in a band shape from a film such as polyethylene, Both ends 5a in the longitudinal direction are fixed to the outer surface (outer surface of the tube 2) of the folded lining material 1 by welding or the like, and are attached in the direction over the width direction of the lining material 1.

Next, as shown in FIGS. 3 to 5, two steel belts 6 are attached to each of both side surfaces of the lining material 1 in the cross-sectional longitudinal direction so as to sandwich the lining material 1. Therefore, each of the steel belts 6 is inserted through the inside of each belt loop 5. And as shown in FIG. 5, the front end of each steel belt 6 is pushed out of the suitable length L1 (for example, about 30 centimeters) before the front end 1a of the lining material 1, and the lining material (1) The ends of the two ends are piled up together and tied together by a loose thread (7) to be fixed to each other. Moreover, the length L2 from the part (tip 1a of the lining material 1) of the part of suitable length L2 (for example, about 30 centimeters) continuing from the tip of the steel belt 6 to the part of length L1. The part which fits the part of) is wound around the armband 8, tied and fixed. Instead of the threads 7 and 8, other members such as strings may be used. In this way, the lining material 9 with a belt is completed.

In the lining material 9 with a belt, the threads 7 and 8 are cut to fix the tips of the steel belts 6 and the ends of the steel belts 6 and the lining material 1. When it is separated and the front end of each steel belt 6 is pulled out, the steel belt 6 can be pulled out of each belt loop 5 and separated from the lining material 1.

In addition, the attachment of the belt loop 5 to the lining material 1 may be performed on the steel belt 6 after fixing the distal end of the steel belt 6 and the distal end of the lining material 1.

In the lining construction of the pipeline, the lining material 9 with the belt produced as described above is pushed into or pulled from the distal end portion into the pipeline as shown in FIG. 6. When pulling in, the rope etc. are engaged with the hole 6a of the front end part of the steel belt 6, and the lining material 9 with a belt is pulled out.

Fig. 6 shows a state in which a lining material 9 with a belt is inserted into a conduit of the branch pipe 11 bent from the main conduit 10 of the conduit. As for the lining material 9 with a belt, elasticity and rigidity are provided by the steel belt 6, compared with the case of the lining material single body, and the waist part becomes strong. Moreover, the width is smaller than the width of the original lining material 1. In addition, in particular, the portion of the length L1 from the tip of the steel belt 6 is free of the lining material 1, and is free, flexible and flexible, and is easy even in a portion where the pipeline is bent at a right angle to the angle close thereto. To bend following the bend of the part, and serve to guide the subsequent part.

Therefore, even if there are many points bent at right angles or close to the pipe line of the branch pipe 11, the contact resistance of the lining material 9 with a belt is small, and the lining material 9 with a belt is easy and smooth. It can be inserted so that the time taken for lining construction can be shortened. Moreover, contact resistance becomes small and the steel belt 6 protects the lining material 1, and elongation and damage of the lining material 1 can be prevented.

When the insertion of the lining material 9 with belts into the conduit is completed, the threads 7 and 8 of the tip portions of the lining material 9 with belts are cut off, and the ends of the steel belts 6 are fixed, The distal end of the steel belt 6 and the lining material 1 is separated. Then, the tip ends of the two steel belts 6 are tensioned, and the steel belts 6 slide with respect to the lining material 1 in the conduit to separate the lining material 1 from the lining material 1, leaving the lining material 1 in the conduit. The steel belt 6 is pulled out of the pipeline.

Thereafter, the lining material 1 remaining in the pipeline is pressurized from the inside with air pressure or the like to expand. At this time, the strength of the tape 4 is set so that the tape 4 can be cut by the pressure of pressurization. Thereby, the tape 4 is cut by the pressure of pressurization, the lining material 1 which was folded to it, and which was bound with the tape 4 expands, expands cylindrically, and is pressed against the inner peripheral surface of the pipe line. In such a state, the lining material 1 is heated by hot water shower, steam, etc. in the lining material 1, the thermosetting resin impregnated in the lining material 1 is hardened, and a pipe line is lined.

According to the present embodiment as described above, even in a pipeline having a plurality of curved portions at right angles to an angle close to the above, the lining material can be easily and smoothly inserted, and the time taken for lining construction can be shortened. In addition, the quality of the lining material can be maintained by preventing elongation or damage during insertion of the lining material.

In the embodiment described above, the steel belt 6 may be attached over the entire length of the lining material 1, or may be attached over a part of the entire length of the lining material 1.

In the embodiment, two steel belts 6 are attached to each other so as to sandwich the lining material 1, but only one steel belt 6 may be attached to one side of the lining material 1. In addition, three or more may be attached so as to surround the lining material 1.

Instead of the steel belt 6, another strip-shaped member made of a material other than steel, such as metal or plastic, and having elasticity and rigidity may be attached to the lining material 1 so as to be attached thereto.

In addition, the lining material of the present invention is not only the lining of pipelines, gas pipes, sewer pipes, water pipes, electric pipes, etc. buried in the ground, but also pipelines such as communication pipes, gas pipes, sewer pipes, water pipes, and electric pipes in a mansion or building or a home. Can also be used for lining.

According to the lining material of this invention, elasticity and rigidity are provided by the strip | belt-shaped member, and the waist part is strong. For this reason, even in a pipeline with many points bent at right angles or close to it, insertion of the lining material can be performed easily and smoothly, and it is possible to prevent stretching or damage of the lining material due to excessive insertion. In addition, it is possible to prevent damage to the lining in that the lining member can be protected by the strip-shaped member during insertion. Further, according to the pipeline lining method of the present invention, since the lining member with the band-like member of the present invention is used, the lining member can be easily and smoothly inserted into the pipeline, thereby preventing the lining member from being stretched or damaged. In addition, the time required for lining construction can be shortened.

Claims

A flexible tubular lining material impregnated with a thermosetting resin, wherein the lining material is removably attached to the strip member having elasticity and rigidity.

The lining material according to claim 1, wherein the belt-shaped member is a steel belt.

The lining material according to claim 1 or 2, wherein the strip-shaped member is attached in a folded state to be smaller in width.

The lining material according to any one of claims 1 to 3, wherein the strip-shaped member is attached to sandwich the lining material.

The lining material according to any one of claims 1 to 4, wherein the strip-shaped member is attached over the entire length of the lining material.

The lining material according to any one of claims 1 to 4, wherein the strip-shaped member is attached over a part of the entire length of the lining material.

The lining member according to any one of claims 1 to 6, wherein the strip member is attached to the lining material so that the tip of the strip member is pushed out from the tip of the lining material.

A first step of inserting the lining material according to any one of claims 1 to 7 into a pipeline by pulling or pushing the lining material;

A second step of separating the strip-shaped member from the lining material after the first step, and extracting the strip-shaped member from the pipe leaving the lining material in the pipe; And

After the second step, the lining material is pressurized from the inside to expand, and the third step of curing the thermosetting resin of the lining material by heating the lining material in a state in which the lining material is pressed against the inner circumferential surface of the pipe line is carried out. .