KR20150037170A - A band­shaped material for spiral pipe and pipeline repairing method using the same - Google Patents

A band­shaped material for spiral pipe and pipeline repairing method using the same Download PDF

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Publication number
KR20150037170A
KR20150037170A KR20130116522A KR20130116522A KR20150037170A KR 20150037170 A KR20150037170 A KR 20150037170A KR 20130116522 A KR20130116522 A KR 20130116522A KR 20130116522 A KR20130116522 A KR 20130116522A KR 20150037170 A KR20150037170 A KR 20150037170A
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KR
South Korea
Prior art keywords
strip material
spiral tube
strip
stretchable
cover
Prior art date
Application number
KR20130116522A
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Korean (ko)
Inventor
야스히로 요코시마
Original Assignee
신일동 주식회사
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Application filed by 신일동 주식회사 filed Critical 신일동 주식회사
Priority to KR20130116522A priority Critical patent/KR20150037170A/en
Publication of KR20150037170A publication Critical patent/KR20150037170A/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The purpose of the present invention is to provide a band-shaped body for forming a spiral pipe and a pipe repairing method using a spiral pipe to maintain the flat and smooth inner surface of a spiral pipe, the watertightness of the spiral pipe without the breakage of the spiral pipe against the extension or contraction of the spiral pipe, and strength when a filler is injected. According to the present invention, the band-shaped body (10) for forming a spiral pipe comprises: a strip material (1) having an extension part (5) with a slack part in a lateral direction; and a flexible cover strip material (2) for covering the extension part (5) by the inner circumference. The spiral pipe (100) is made by engaging the joints (3) on both lateral sides of the band-shaped body (10) with each other.

Description

TECHNICAL FIELD [0001] The present invention relates to a spiral tube for forming a spiral tube and a spiral tube,

More particularly, the present invention relates to a spiral tube having a slack portion capable of regenerating a tube in an aged sewer pipe or a tube of an agricultural water pipe, and more particularly, to a spiral tube forming method using a spiral tube for forming a spiral tube and a spiral tube, And relates to a method of rehabilitating a vessel using a spiral tube.

Conventionally, in order to regenerate an aged sewage pipe or an agricultural water pipe, a method of joining widthwise end portions of the strip material formed with ribs to form a spiral pipe and rotating it, and inserting the strip material into the wastewater pipe, The spiral tube was installed in the fallen tube by the method of forming the spiral tube by bonding and then the cement milk was filled between the spiral tube and the wall of the fallen tube to cure the cement milk. Such a method of regenerating the old tube is disclosed in Patent Documents 1 and 2. [

Most of the aged sewage pipes and agricultural water pipes are made of concrete, and spiral pipes are installed in the pipes. When cement milk is filled between aged sewage pipes and agricultural water pipes and spiral pipes and hardened, they become one-piece structure pipes with high rigidity. However, a rigid one-piece structural pipeline is vulnerable to ground changes and earthquakes. In addition, since the old pipe, which is an aged sewage pipe or agricultural water pipe, is a pipe having a joint, the joint has a characteristic of absorbing a change of the ground and an earthquake and a crack is generated in the cement milk, The joint part of the pipe may be separated.

When a stretchable portion is provided on a strip constituting a spiral tube, as a countermeasure against separation of the engaging portion, there is an effect of preventing separation of the engaging portion. However, when the stretchable portion is short, water leakage occurs. The strength of the cement itself is lowered, and filling of the cement milk and insertion of the spiral tube into the existing tube becomes difficult. In addition, since the expansion and contraction portion forms the recessed portion on the inner peripheral surface of the spiral tube, the smoothness of the inner peripheral surface of the spiral tube is impaired.

Patent Document 1: JP-A-7-40436 Patent Document 2: JP-A-5-18478

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a spiral tube capable of maintaining the smoothness of the inner circumferential surface of the spiral tube and capable of maintaining watertightness without breaking even when the spiral tube is elongated or contracted, Shaped spiral tube that can maintain a spiral tube and a spiral tube.

A strip-shaped member for forming a spiral pipe according to the present invention comprises: a strip member (1) provided with a stretchable and contractible portion (5) having a slack portion (7) in a width direction; And a flexible cover strip material 2 covering the stretchable and contractible portion 5 which is an inner peripheral side of the band-shaped body 10. The engaging portion 3 formed on both sides in the width direction of the strip- And the spiral tube 100 is formed by engaging with each other.

It is preferable that the cover strip material (2) is a material having flexibility more than the strip material (1).

It is preferable that the strip material 1 is made of a hard resin and the cover strip material 2 is made of a soft resin and integrally molded.

It is preferable that the cover strip material 2 is mounted on the strip material 1 by engaging the large convex portion with the large concave portion and the small convex portion with the small concave portion, respectively.

It is preferable that a closed space is formed between the cover strip material 2 and the slack portion 7.

The strip member 1 is preferably composed of a narrow strip member 1B having a stretchable and contractible portion 5 and a wide strip member 1A and to be engaged with each other.

The method for regenerating a tube using a spiral tube according to the present invention includes the steps of: (S10) storing water at the bottom of a channel 50 to be regenerated; A strip member 1 having a stretchable and contractible portion 5 and a cover strip member 2 are fed to the combiner 20 so that the cover strip member 2 is wound around the stretchable portion of the inner circumferential surface of the strip member 1 (S11); A step (S12) of winding the cover strip material (2) around the guide rollers (30), pushing and pushing both sides of the strip material on which the cover strip material (2) is mounted to rotate and forming a spiral tube (100) in the pipeline (50); And injecting a filler (S13) between the spiral tube (100) and the conduit (50).

The strip member 1 is composed of a narrow strip member 1B having a wide strip member 1A and a stretchable and contractible portion 5 and a wide strip member 1A and a narrow strip member 1B in a step S12. 1B are preferably wrapped around the guide rollers 30 and engaged with each other.

Another pipe manufacturing method using a spiral pipe according to the present invention is characterized in that a strip material 1 having a stretchable and contractible portion 5 and a cover strip material 2 are integrally molded by two molds with one extruder )Wow; Storing water at the bottom of the pipeline 50 to be regenerated (S21); A step of wrapping around the guide rollers 30 and pushing and pushing both sides of the strip material 1 on which the cover strip material 2 is mounted while rotating to form a spiral tube 100 in the pipeline 50 S22); Injecting a filler between the spiral tube 100 and the conduit 50 (S23).

According to the spiral tube-forming strip member of the present invention, since the strip member is provided with the stretching portion having the slack portion in the width direction, the strip member is coupled in a spiral manner. Therefore, (Without breaking). Since the elastic portion on the inner surface of the spiral tube is covered with the flexible cover strip, the smoothness of the inner circumferential surface of the tube can be maintained. In addition, even if the elongating / contracting portion is elongated or contracted, the spiral tube does not break, so that watertightness can be maintained. Even if the cover strip material breaks in some cases, the stretchable portion having the slack portion is not broken, and water tightness can be maintained. The strength can be maintained even when the filler is injected between the spiral tube and the existing pipe.

Since the cover strip material is made of a material that is more flexible than the strip material, the cover strip material can be stretched even without a structure similar to a slack portion. The flatness of the inner peripheral surface can be maintained.

The strip material 1 is made of a hard resin and the cover strip material 2 is made of a soft resin so that the strip material 1 and the cover strip material 2 can be assembled and assembled.

Since the cover strip material is mounted on the strip material by engaging the large convex portion with the large concave portion and the small convex portion with the small concave portion, when the spiral tube is pulled, the engaging portion between the small convex portion and the small concave portion can be separated for the first time.

Since the closed space is formed between the cover strip material and the slack portion, buoyancy can be imparted to the spiral pipe when the water is made to float in the pipe. As a result, the driving force of the spiral tube is reduced, and the pressing operation becomes easy.

Since the strip material is composed of the narrow strip material and the wide strip material, the material of the wide strip material and the narrow strip material can be divided. A narrow strip material having a stretchable portion can be formed of a flexible material.

According to the present invention, the strip member 1 and the cover strip member 2 having the stretchable and contractible portion 5 as the strip-like body 10 and the cover strip member 2 are fed to the coupler 20, (S11) of mounting the strip member (2) so as to cover the stretchable portion of the inner circumferential surface of the strip material (1), the smoothness of the inner circumferential surface of the spiral tube can be maintained, And a spiral tube which maintains the strength at the time of injecting the filler can be manufactured.

In the step S12, the narrow strip material and the wide strip material are wrapped around the guide rollers and are engaged with each other to form the spiral pipe. Therefore, the present invention is not limited to making the spiral pipe with one strip material. Spiral tube can be made.

According to the present invention, the strip material 1 having the stretchable and contractible portion 5 and the cover strip material 2 are integrally formed by a single die and two extruders (S20 The strip member 1 and the cover strip member 2 which are the strip members 10 are supplied to the combiner 20 and the cover strip member 2 is wound around the strip member 1 so as to cover the stretching portion of the inner circumferential surface of the strip member 1. [ The mounting step can be eliminated. In addition, the smoothness of the inner circumferential surface of the spiral tube can be maintained, and even if the spiral tube is elongated or contracted, the water tightness can be maintained without breaking, and a spiral tube can be manufactured that maintains the strength at the time of injecting the filler.

1 is a cross-sectional view in the width direction of a strip material according to the present invention (Embodiment 1).
2 is an enlarged view of the main part of Fig.
3 is a cross-sectional view of an adhesive type cover strip.
4 is a cross-sectional view (Example 2) in which a strip material and a cover strip material are integrally formed.
Fig. 5 is a cross-sectional view of a main part of a cover strip material having engaging concavities and convexities of different shapes and sizes. Fig.
6 is a cross-sectional view showing a state in which a strip material is composed of a wide strip material and a narrow strip material (Example 3).
Figure 7 is a cross-sectional view of the wide strip of Figure 6;
8 is a cross-sectional view in the width direction of the narrow strip material and the cover strip material;
FIG. 9 is an explanatory diagram of a tube regeneration method according to the present invention (Embodiment 1). FIG.
FIG. 10 is an explanatory diagram of a tube rehabilitation method according to the present invention (Embodiment 2). FIG.
FIG. 11 is a flowchart of a tube rehabilitation method according to the present invention (Examples 1 and 3).
12 is a flowchart of a tube rehabilitation method according to the present invention (Embodiment 2).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, in which a spiral tube for forming a spiral tube and a tube regeneration method using a spiral tube are described in detail.

1 is a cross-sectional view in the width direction of the strip material 1 according to the present invention. The strip forming body 10 for forming the spiral tube 100 has a strip shape having a predetermined width and a long length in the longitudinal direction and includes a strip member 1 and a cover strip member 2. As shown in Fig. 1, the strip material 1 comprises a joining portion 3 on the left and right sides, an inner plate upper portion 4 thereof, and a stretchable and contractible portion 5 at the center, as viewed in cross section in the width direction. A plurality of ribs (8) extending in the longitudinal direction are formed in the plate top (4). So that the side of the rib 8 faces the pipeline 50. Two coupling recesses 3a are formed on one (left) coupling portion 3 and two coupling protrusions 3b are formed on the other coupling portion 3 (right). The strip material 1 is spirally wound and the two engagement portions 3 are engaged with each other to form the spiral tube 100. In addition, the cross-sectional shape of the spiral tube 100 may be an elliptical shape or a rectangular shape in addition to the circular shape.

The strip material 1 is extruded into a mold from an extruder and molded. In this embodiment, the strip material 1 is made of vinyl chloride resin or polyethylene resin. The strip material 1 may have a thickness of 1 to 6 mm, a width of 30 to 60 mm and a length of 100 to 3000 m, and the thickness of the stretchable and contractible portion 5 may be thinner than the peripheral portion. The extension length is set by predicting the ground change or earthquake in advance. For example, if the stretching length is increased by 37 mm or more, it can cope with liquefaction caused by an earthquake.

Fig. 2 is an enlarged view of the main part of Fig. Since the stretchable portion 5 of the strip material 1 is provided with the slack portion 7, it extends in the width direction. In the case of the spiral tube, the stretchable portion 5 can be stretched and contracted in the longitudinal direction without stretching in the width direction. The inner peripheral surface of the stretchable and contractible portion 5 of the strip material 1 is covered with the cover strip material 2. [ The cover strip material 2 is mounted on the stretchable and contractible portion 5 of the strip material 1 by engaging the middle convex portion 6a and the middle concave portion 6b. The cover strip material 2 is extrusion-molded, and is made of the same material as the strip material 1, such as vinyl chloride resin or polyethylene resin. In this case, the thickness of the cover strip material 2 is made thinner than the thickness of the adjacent strip material 1. A flexible resin such as soft vinyl chloride or low density polyethylene having an elongation of 10% to 50% may be used. According to such a constitution, when the strip material 1 with the cover strip material 2 is pulled in the width direction, the stretchable and contractible portion 5 is reliably stretched. When a soft resin is used for the cover strip material (2), the cover strip material (2) also expands if the strip material (1) is slightly unfolded.

3 is a cross-sectional view of an adhesive type cover strip material 2. Fig. 3, the cover strip material 2 can be attached to the strip material 1 by the adhesive 11 without being engaged. Although not shown, when one side is bonded and the other side is engaged, when the tension is greater than a certain value, the bond is separated and the bonded portion remains so that the cover strip material 2 can be prevented from falling off the strip material 1. [ have.

4 is a cross-sectional view of a case where the strip material 1 and the cover strip material 2 are integrally formed. An extruder for forming the strip material 1 and an extruder for molding the cover strip material 2 are connected to one metal mold and at the same time the material is extruded into the metal mold. In this embodiment, the strip material 1 is a hard resin and the cover strip material 2 is a soft resin. If they are the same resin, each can be reliably combined by simultaneous molding. That is, if vinyl chloride is used, hard vinyl chloride and soft vinyl chloride are used. If it is polyethylene, a combination of high density polyethylene and polyethylene elastomer or low density polyethylene is used. As shown in Fig. 4, a closed space 14 is formed between the strip material 1 and the cover strip material 2, and inside the slack portion 7.

5 is a cross-sectional view of the main part of the cover strip material 2 having the unevenness of the engaging projections of different sizes. The large convex portion 6c is engaged with the large concave portion 6d and the small convex portion 6e is engaged with the small concave portion 6f. In the case of such a constitution, when a tension greater than a certain value is applied, the engagement between the small convex portion 6e and the small concave portion 6f is separated, and the engaging portion of the large convex portion 6c and the large concave portion 6d is left , So that the cover strip material (2) does not fall off from the strip material (1). A closed space 14 is formed between the slack portion 7 and the cover strip material 2 in a state in which the cover strip material 2 is engaged with the strip material 1 as shown by a dotted line in Fig. Since the closed space 14 is filled with water in the channel to be rehabilitated, buoyancy can be given to the spiral pipe 100. Therefore, insertion of the spiral tube 100 into the tube is facilitated.

6 is a cross-sectional view showing a state in which the strip material 1 is composed of a wide strip material 1A and a narrow strip material 1B. 7 is a cross-sectional view of the wide strip material 1A of Fig. 8 is a cross-sectional view in the width direction of the narrow strip material 1B and the cover strip material 2. Fig. According to Figs. 6 to 8, the material of the wide strip material 1A and the narrow strip material 1B can be divided. The engaging projections 3b are provided on both sides of the narrow strip material 1B to engage with the engaging recess 3a of the wide strip material 1A. The large concave portion 6d and the small concave portion 6f of the narrow strip member 1B are engaged with the large convex portion 6c and the small convex portion 6e of the cover strip 2 respectively.

Fig. 9 is an explanatory diagram of the tube rehabilitation method according to the present invention. FIG. 5 is a view showing the original pressure state of the spiral tube 100; FIG. A strip material 1 having a stretchable and contractible portion 5 and a cover strip material 2 are fed to a combiner 20 provided on a manhole 51 and the cover strip material 2 is attached to the strip material 1 . Thereafter, the strip material 1 is wrapped around the guide rollers 30, and both sides of the strip material 1 are engaged with each other while being rotated and pressed, thereby forming the spiral pipe 100 in the pipe 50 of the existing obsolete pipe. Water is introduced into the bottom of the channel 50 to be regenerated to a predetermined depth.

Fig. 10 is a view for explaining the tube rehabilitation method according to the present invention. The strip material 1 is composed of a wide strip material 1A and a narrow strip material 1B. The cover strip material 2 is mounted on the narrow strip material 1B by the coupler 20. The wide strip member 1A and the narrow strip member 1B are engaged with each other by the guide roller 30. [ The guide roller 50 surrounds two different strip materials to form the spiral tube 100. When the spiral tube 100 is formed in the conduit 50, the filling material 15 of the cement milk is injected into the gap between the spiral tube 100 and the conduit 50.

FIG. 11 is a flowchart of a method of rehabilitating a tube according to the present invention. Step S10 is a step of storing water at a predetermined depth at the bottom of the pipeline 50 to be regenerated. Step S11 is a step of supplying the strip material 1 and the cover strip material 2 to the coupler 20 at the construction site and mounting the cover strip material 2 to the strip material 1. [ Step S12 is a step in which the strip material 1 is wrapped around the guide roller 30 and then both of them are engaged with each other to rotate and push forward to form the spiral tube 100 in the channel 50. [ Step S13 is a step of injecting a filler, for example, cement milk, between the spiral tube 100 and the duct 50. [ In step S12, only the strip material 1 is wound around the guide roller 30 in the case of FIG. 9, but in the case of FIG. 10, the width of the strip material 1A and the width of the strip material 1B, Two of them wrap around.

Fig. 12 is a flowchart of a vascular rehabilitation method according to the present invention. Step S20 is a step of integrally molding the strip material 1 and the cover strip material 2 with two extruders and one metal mold. Step S21 is a step of storing water at a predetermined depth at the bottom of the pipeline 50 to be regenerated. Step S22 is a step in which the strip material 1 is wrapped around the guide roller 30 and then the two sides are engaged with each other to rotate and push forward to form the spiral tube 100 in the pipeline 50. Step S23 is a step of injecting a filler, for example, cement milk, between the spiral tube 100 and the duct 50. [

It is preferable as a stretchable spiral tube-forming strip-shaped body capable of regenerating a sewage pipe or a farm water pipe.

1: strip material 1A: wide strip material
1B: Narrow strip material 2: Cover strip material
3: engaging portion 3a: engaging recess
3b: joint projecting portion 4: plate upper portion
5: stretchable portion 6:
6a: middle convex portion 6b: middle concave portion
6c: large convex portion 6d: large concave portion
6e: Small convex portion 6f: Small concave portion
7: slack portion 8: rib
9: Packing 10: Straps
11: Adhesive 12: Adhesive conveying hose
13: Hydraulic hose 14: Sealed space
15: filler (cement milk) 20: coupler
21: strip re-feed roller 30: guide roller
50: Pipeline 51: Manhole
100: Spiral tube

Claims (9)

A strip member (1) provided with a stretchable and contractible portion (5) having a slack portion (7) in a width direction; And
And a flexible cover strip material (2) covering the stretchable and contractible portion (5) which is an inner circumferential surface side of the band-shaped body (10), and the engaging portions (3) formed on both sides in the width direction of the band- And the spiral tube (100) is formed by engaging the spiral tube (100). The method according to claim 1,
Wherein the cover strip material (2) is a material that is more flexible than the strip material (1). The method according to claim 1,
Characterized in that the strip material (1) is made of a hard resin, and the cover strip material (2) is made of a soft resin and integrally molded. 3. The method of claim 2,
Characterized in that the cover strip material (2) is mounted on the strip material (1) by engaging large convex portions with large convex portions and small convex portions with small concave portions, respectively. The method according to claim 1,
And a closed space is formed between the cover strip material (2) and the slack portion (7). The method according to claim 1,
The strip member 1 is composed of a narrow strip member 1B having a stretchable and contractible portion 5 and a wide strip member 1A and the narrow strip member 1B and the wide strip member 1A, Are formed to be engaged with each other. (S10) storing water at the bottom of the pipeline (50) to be regenerated;
A strip member 1 having a stretchable and contractible portion 5 and a cover strip member 2 are fed to the combiner 20 so that the cover strip member 2 is wound around the stretchable portion of the inner circumferential surface of the strip member 1 (S11);
A step (S12) of winding the cover strip material (2) around the guide rollers (30), pushing and pushing both sides of the strip material on which the cover strip material (2) is mounted to rotate and forming a spiral tube (100) in the pipeline (50);
(S13) injecting a filler between the spiral tube (100) and the conduit (50). 8. The method of claim 7,
The strip member 1 is composed of a wide strip member 1A and a narrow strip member 1B having a stretchable and contractible portion 5,
In the step S12, the wide strip material 1A and the narrow strip material 1B are wound around the guide rollers 30 and are engaged with each other. (S20) in which the strip material (1) having the stretchable and contractible portion (5) and the cover strip material (2) are integrally molded by two extruders and one die;
Storing water at the bottom of the pipeline 50 to be regenerated (S21);
A step of wrapping around the guide rollers 30 and pushing and pushing both sides of the strip material 1 on which the cover strip material 2 is mounted while rotating to form a spiral tube 100 in the pipeline 50 S22);
(S23) injecting a filler between the spiral tube (100) and the conduit (50).
KR20130116522A 2013-09-30 2013-09-30 A band­shaped material for spiral pipe and pipeline repairing method using the same KR20150037170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130116522A KR20150037170A (en) 2013-09-30 2013-09-30 A band­shaped material for spiral pipe and pipeline repairing method using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130116522A KR20150037170A (en) 2013-09-30 2013-09-30 A band­shaped material for spiral pipe and pipeline repairing method using the same

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Publication Number Publication Date
KR20150037170A true KR20150037170A (en) 2015-04-08

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