JP2010179619A - Pipe lining device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe lining device contributing to enhancement of earthquake resistance of piping by reinforcing a liner layer, without impairing quick and efficient working properties for lining execution. <P>SOLUTION: The liner layer 7 is reinforced since a reinforcing resin tube 13 integrally contacts closely with an inner circumferential face of a lining cross tube 10, to form an inner face layer of the liner layer 7, and contributes to the enhancement of the earthquake resistance of the piping 6. The quick and efficient working properties for the lining execution is not impaired because the reinforcing resin tube 13 is provided concurrently with the execution of the lining cross tube 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a piping lining apparatus for repairing and rehabilitating piping such as a water supply / drainage pipe of a building with a liner layer, and more particularly, to a piping lining apparatus improved to reinforce a liner layer and impart earthquake resistance to the piping.

  In buildings such as condominiums and rental buildings, in order to restore and rehabilitate the hygiene and durability of piping such as water supply and drainage pipes, a liner coating is applied with a predetermined thickness to repair the inner wall of the piping with a lining device. (For example, refer to Patent Documents 1 and 2).

In the lining apparatus of patent document 1, the coating material in piping is pressed against an inner wall using the umbrella-shaped bag body provided so that expansion / contraction is possible, and a lining layer is formed.
In the lining device of Patent Document 2, as the driving body is supplied into the pipe and the striated body is fed out, the inner circumferential surface of the lining cloth pipe that has been reversed on the front and back is moved in the depth direction while closely contacting the inner wall of the pipe. Thus, a liner layer is formed. In this lining apparatus, a durable and durable liner layer having a substantially uniform thickness can be applied with good work efficiency, and therefore, this lining apparatus is an excellent construction technique that is attracting attention from the pipe rehabilitation industry.

On the other hand, since many buildings have earthquake-resistant structures and are prepared for earthquakes that frequently occur in recent years, it is a concern of the pipe rehabilitation industry to add reinforcement to the pipes after repair and rehabilitation using liner layers. It has become.
As a technique for reinforcing pipes such as piping, a reinforcing layer is formed by applying a fiber reinforced resin layer to a butt portion of a resin pipe and drying it as a method for reinforcing a resin pipe (see, for example, Patent Document 3). ).

  In repair pipes that are pulled and inserted into existing piping while deforming the pipe at room temperature, a reinforcing strip is embedded in the flexible resin layer of the multilayer pipe to increase the tensile strength of the pipe (for example, Patent Document 4). reference).

Japanese Patent No. 4181405 Japanese Patent No. 4181439 Japanese Patent Laid-Open No. 01-234231 Japanese Patent Laid-Open No. 09-072464

When a liner layer is formed using a lining device, since quick and efficient construction is required, Patent Documents 1 and 2 excellent in workability are suitable.
However, in Patent Documents 1 and 2, in order to press the paint against the inner wall or to reverse the lining cloth tube, the reinforcing layer of Patent Document 3 and the reinforcing strip material of Patent Document 4 are the liner layers of Patent Documents 1 and 2. It was difficult to incorporate it into the hood, and the search for new reinforcing members continued.

  The present invention has been made in view of the above circumstances, and its purpose is to reinforce the liner layer without impairing the quick and efficient workability of the lining construction, contributing to the improvement of the earthquake resistance of the piping. It is to provide a piping lining device.

(About claim 1)
In the piping lining device, the lining cloth pipe, which is impregnated with liquid paint and can be flipped on both sides, is pressed, and the inner circumferential surface of the lining cloth pipe that has been turned upside down is closely attached to the inner wall of the pipe, and the pipe is turned upside down. The liner layer is formed by moving in the depth direction.
A reinforcing resin tube having a length corresponding to the lining cloth tube is provided, covers the outer periphery of the lining cloth tube, reverses it with the lining cloth tube, and affixes it to the inner periphery of the inverted lining cloth tube. The inner surface layer of the liner layer is formed by close contact with each other.

  During the construction work of the lining cloth pipe, the resin tube for reinforcement is in close contact with the inner periphery of the lining cloth pipe to form the inner surface layer of the liner layer, so that the liner layer can be reinforced and the pipes are seismic resistant. Contributes to the improvement of sex. Moreover, since the reinforcing resin tube is provided at the same time as the lining cloth tube construction, the lining construction can be performed quickly and efficiently without impairing workability.

(About claim 2)
The lining cloth tube is made of a flexible woven fabric containing glass fibers and chemical fibers such as polyethylene. For this reason, the lining cloth pipe becomes a toughness cloth which is robust and excellent in durability, and can be used for protecting pipes over a long period of time.

(Claim 3)
A reinforcing resin tube is provided which forms an inner surface layer by pressing and intimate contact with the inner peripheral surface of the liner layer by expansion of a pressurized balloon inserted into a pipe having a liner layer formed on the inner peripheral surface with a paint.

  During construction of the liner layer, the reinforcing resin tube is pressed and adhered to the inner peripheral surface of the liner layer by inflation of the pressurized balloon, so that the resin tube exhibits the function of maintaining the shape of the liner layer, The liner layer can be reinforced in the same manner as in claim 1 and contributes to the improvement of the earthquake resistance of the piping.

(About claim 4)
The resin tube is made of urethane resin, nylon resin or natural rubber.
In this case, when the lining cloth tube is impregnated with an epoxy resin, the resin tube becomes more compatible with the lining cloth tube, and the adhesion to the lining cloth tube is improved and it becomes easy to integrate.

(Claim 5)
The outer surface of the resin tube forms a corrugated portion that undulates along the longitudinal direction. In this case, since the cross-sectional shape of the resin tube changes along the longitudinal direction, it can cope with external forces from various directions, and the earthquake resistance of the resin tube against the piping is enhanced.

(About claim 6)
The inner surface of the resin tube forms an undulating portion having an arcuate cross-section that undulates along the longitudinal direction.
The corrugated part can cope with external forces from various directions, and the earthquake resistance of the resin tube against the piping is enhanced.

(About claim 7)
In the resin tube, a cylindrical net woven from a vertical fine line and a horizontal fine line is embedded. For this reason, the resin tube itself is solidified, and the earthquake resistance of the resin tube against the piping is enhanced.

(About claim 8)
A spiral spiral wire having a predetermined pitch is embedded in the resin tube. For this reason, similarly to the seventh aspect, the resin tube itself is solidified, and the earthquake resistance of the resin tube against the piping is enhanced.

(About claim 9)
The predetermined pitch has a separation dimension relationship based on a Fibonacci number sequence in which the equal difference, the equal ratio, or the general term is represented by the sum of the previous term and the next term along the longitudinal direction.
For this reason, the flexibility of the resin tube is increased, and when the resin tube is used together with the lining cloth tube, there is an advantage that the resin tube is easily reversed and displaced together with the lining cloth tube.

(About claim 10)
One side surface portion in the longitudinal direction of the resin tube is formed by a stretchable woven fabric ribbon having a predetermined width dimension.
For this reason, the flexibility of the resin tube increases, and when it is used together with the lining cloth tube, the resin tube is easy to be reversed and displaced together with the lining cloth tube, and after the reversal, the band ribbon is integrated with the lining cloth tube. Contribute to reinforcement.

(About claim 11)
The resin tube is formed by alternately connecting a resin tube portion and a stretchable woven tube ribbon having a predetermined width dimension in the longitudinal direction.
For this reason, as in the case of the tenth aspect, the flexibility of the resin tube is increased, and when the resin tube is used together with the lining cloth tube, the resin tube is easily inverted and displaced together with the lining cloth tube. Contributes to the reinforcement by integrating with the lining cloth tube.

(About claim 12)
A hot water supply circulation means is provided for circulating and flowing hot water brought into direct contact with the resin tube after the liner layer is constructed.
In this case, since the paint layer can be dried with hot water immediately after the liner layer is applied, it is possible to quickly move to the next work process in a short time, and the work efficiency is improved.

(A) is the schematic which shows the lining construction example of a drain pipe, (b) is a longitudinal cross-sectional view which shows the connection of piping and a branch pipe (Example 1). (A) is a longitudinal cross-sectional view which shows the aspect which constructs a liner layer in piping, (b) is a longitudinal cross-sectional view which shows the aspect by which the liner layer was formed in the piping network (Example 2). (A) is a perspective view of a resin-made tube, (b), (c) is a longitudinal cross-sectional view of the piping network which forms a resin-made tube using a pressurized balloon (Example 2). It is a longitudinal cross-sectional view of the piping network which comprises a hot water supply circulation means and makes hot water contact a resin-made tube (modified example of Example 2). (A), (b), (c), (d) is a perspective view of a resin tube (Examples 3, 4, 5, 6). (A), (b) is a perspective view of a resin-made tube (Examples 7 and 8).

  In the present invention, during the construction work of the lining cloth pipe, the reinforcing resin tube is integrally adhered to the inner peripheral portion of the lining cloth pipe to form the inner surface layer of the liner layer. For this reason, a liner layer can be reinforced and it contributes to the improvement of the earthquake resistance of piping. Moreover, since the reinforcing resin tube is provided at the same time as the lining cloth tube construction, the lining construction can be performed quickly and efficiently without impairing workability.

  1 to 3 show a first embodiment of the present invention. FIG. 1A is an example of lining construction in a drainage pipe network of a building. The piping 6 as the drainage pipe network is cleaned prior to the lining construction, and the deposits such as rust and scale that have flowed down are external. It is collected from the dredge by a universal pipe rehabilitation vehicle (not shown).

After cleaning, a paint is applied as a liner layer 7 to the inner wall 6a of the pipe 6 based on a pipe lining method having a lining cloth pipe 10 described later.
The paint for lining construction is a liquid containing a coloring pigment or an epoxy resin. In producing the lining cloth tube 10, a toughness cloth (thickness 1 to 4 mm) is formed from a flexible woven cloth containing chemical fibers such as glass fiber and polyethylene with a size corresponding to the inner diameter of the pipe 6. By impregnating the toughness cloth with a paint, the lining cloth pipe 10 which is robust and excellent in durability and can be reversed on the front and back is formed.

  The lining cloth pipe 10 impregnated with the paint covers the entire outer periphery of the lining cloth pipe 10 with a resin tube 13 for reinforcement. The distal end portion 10a of the lining cloth tube 10 is releasably connected to the distal end portion G1 of the cord body G together with the distal end portion 13a of the resin tube 13. The rope body G is inserted into the pressure feed tube 20 and wound around the winding portion 18a of the reversing machine 18.

The resin tube 13 is, for example, a translucent cylindrical body having a thickness of about 0.1 to 0.5 mm, and the inner diameter dimension is set substantially equal to the outer diameter of the lining cloth tube 10. The thickness is not limited to about 0.1 to 0.5 mm, which is the thickness of the resin tube 13, and can be changed as desired depending on the use situation and the inner diameter of the pipe 6.
The resin tube 13 may be made of a nylon resin or natural rubber, as well as a urethane resin that is familiar to the epoxy resin. When synthetic rubber (ACM, NBR, IR, EPM, EPDM, ECO, CR, SBR, BR, FKM, IIR) is used for the resin tube 13, the silicone rubber is excluded.

In the reversing step, the lining cloth tube 10 is fed from the winding portion 18a together with the tip portion 13a of the resin tube 13, and the tip portion 10a of the lining cloth tube 10 is pushed into the pipe 6 together with the resin tube 13 and turned over. And is fitted into the pipe 6.
A remote control camera (not shown) is arranged from the reversing machine 18 to the lining cloth tube 10 so that the feeding state of the lining cloth tube 10 with respect to the pipe 6 can be monitored by the monitor P according to the amount of movement of the rope body G. It has become.

In the pressure application step, a moving force in the depth direction of the pipe 6 is applied to the lining cloth tube 10 by the driving pressure of the blower 51 to press the lining cloth tube 10 (see arrow M in FIG. 1A).
In the moving process, the depth direction of the pipe 6 while the inner peripheral surface of the lining cloth pipe 10 reversed upside down by the driving pressure generated in the pressure applying process is brought into close contact with the inner wall 6a of the pipe 6 together with the cylindrical net 42. Move to reverse. Along with this, the resin tube 13 is also inverted, and proceeds while being in contact with the inner peripheral surface of the inverted lining cloth tube 10.

  At the end of the reversal movement, the cord body G is wound around the winding portion 18a and pulled out in the direction indicated by the arrow N in FIG. 1 (a), and the leading end portion 10a of the lining cloth tube 10 and the resin tube 13 are removed. The connection of the distal end portion G1 of the striatum G to the distal end portion 13a is released. Along with this, as shown by a two-dot chain line in the figure, the distal end portion 13a of the resin tube 13 expands to freely attach the distal end opening portion 10A of the lining cloth tube 10 to the terminal inner wall portion 6A of the pipe 6. .

In the curing step, hot water or hot air generated by a boiler or a pressure feeder (not shown) is sent to the pipe 6 for drying and curing.
Thus, the liner layer 7 (for example, with a thickness of about 2 to 3 mm) is formed with the lining cloth tube 10 turned upside down and in close contact with the inner wall 6 a of the pipe 6. An inner surface layer in close contact with the inner peripheral surface is formed.

In the above configuration, the reinforcing resin tube 13 is integrally adhered to the inner peripheral portion of the lining cloth tube 10 to form the inner surface layer of the liner layer 7 when the lining cloth tube 10 is constructed. It can reinforce and contribute to the improvement of the earthquake resistance of the pipe 6. Moreover, since the reinforcing resin tube 13 is provided simultaneously with the construction of the lining cloth tube 10, the lining construction can be performed quickly and efficiently without impairing workability.
In the next step, a work robot with a cutter (not shown) is introduced into the pipe 6 and at the position corresponding to the opening 11B of the branch pipe 11, a communication hole 7a is formed in the liner layer 7 as shown in FIG. Can be formed.

2 and 3 show a second embodiment of the present invention. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and only different parts will be described.
In Example 2, as shown in FIG. 2A, when the liner layer 17 is applied, the coating material 14 is supplied in advance to the inside of the pipe 6 opened at both ends, and the parabola-like bag body 15 is attached. Use. The bag body 15 is disposed in the pipe 6 and is connected to the cable body 8 that forms a wire, a rope, a rope, or the like via an auxiliary rope 16 tied to the opening peripheral edge portion 15a.

  When driving pressure is supplied into the pipe 6, the bag 15 receives driving pressure from the right end opening 6m, passes through the position indicated by the two-dot chain line in FIG. After moving and allowing the bag 15 to pass through the entire length of the pipe 6, the bag 15 is taken out from the left end opening 6 n of the pipe 6. In this process, the bag body 15 spreads the coating material 14 and presses it against the inner wall 6a, so that the liner layer 17 is formed substantially evenly on the inner wall 6a as shown in FIG.

  Before the liner layer 17 is dried, the resin tube 13 having an opening at both ends shown in FIG. 3A is inserted into the pipe 6 together with the long pressurizing balloon 19 {see FIG. 3B}. The pressurizing balloon 19 is inserted into the resin tube 13 and introduces the compressed gas from the valve adjustment knob 21 through the pressure gauge 22. The outer diameter of the resin tube 13 is set to be approximately equal to the inner diameter of the liner layer 17 as a paint layer.

  The resin tube 13 has openings 13 n and 13 m at both left and right ends, and the length W thereof is the same as the length L of the pipe 6. The length of the pressurizing balloon 19 is set to a length K slightly larger than the length L of the pipe 6 for the convenience of construction.

  By introducing the compressed gas, the pressurizing balloon 19 is inflated, and the resin tube 13 is expanded into a tension state and pressed against the liner layer 17 so as to be integrally adhered thereto. Thereafter, when the compressed gas is extracted and the pressurized balloon 19 is deflated and pulled out from the pipe 6, the resin tube 13 is formed on the inner wall 6a as the inner surface layer as shown in FIG.

  In Example 2, since the resin tube 13 is pressed and adhered to the inner peripheral surface of the liner layer 17 by the expansion of the pressurizing balloon 19 when the liner layer 17 is applied, the resin tube 13 has the shape of the liner layer 17. While holding, it strengthens the liner layer 17 and contributes to the improvement of the earthquake resistance of the pipe 6.

  FIG. 4 shows an example in which a hot water supply circulation means 30 having a hot water supply pump 31 is provided in the second embodiment. The hot water supply pump 31 has a discharge port 31 a connected to a nozzle 33 via a hot water supply pipe 32. The return port 31 b of the hot water supply pump 31 is connected to the recovery cylinder 35 through the hot water pipe 34. The nozzle 33 is disposed in the left end opening 6 n of the pipe 6, and the collection cylinder 35 is disposed in the right end opening 6 m of the pipe network 6.

  Since the resin tube 13 covers the liner layer 17 by sticking, the hot water supply pump 31 can be operated immediately after the construction of the liner layer 17. By the operation of the hot water supply pump 31, hot water circulates in the pipe 6 from the left end opening 6n via the discharge port 31a, the hot water pipe 32 and the nozzle 33. In this process, since hot water directly contacts the resin tube 13, the liner layer 17 is heated and dried and cured.

The hot water heated in contact with the resin tube 13 flows in the pipe 6 and returns to the hot water supply pump 31 from the right end opening 6m through the recovery cylinder 35, the hot water pipe 34 and the return port 31b.
In this case, since the liner layer 17 can be dried with hot water immediately after the construction of the liner layer 17, it is possible to quickly move to the next work process in a short time, and work efficiency is improved.
The hot water supply circulation means 30 is not limited to the second embodiment but can be applied to the first embodiment in which the liner layer 17 is formed on the pipe 6 using the lining cloth pipe 10.

FIG. 5A shows Example 3 of the present invention. Example 3 is different from Example 1 in that a wave-like portion 40 that forms unevenness along the longitudinal direction is formed on the outer surface of the resin tube 13. The wavy portion 40 is formed to extend in the longitudinal direction with a predetermined width dimension T1.
In this case, since the cross-sectional shape of the resin tube 13 changes along the longitudinal direction by the wavy portion 40, it can cope with external forces from various directions, and the earthquake resistance of the resin tube 13 with respect to the pipe 6 is enhanced.

FIG. 5B shows a fourth embodiment of the present invention. The difference between Example 4 and Example 1 is that the inner surface of the resin tube 13 is formed with a corrugated portion 41 having an arcuate cross section that undulates along the longitudinal direction L1. The wavy portion 41 has a predetermined width dimension T2 and is provided on the inner surface of the resin tube 13 so as to form a spiral shape.
The wavy portion 41 can cope with external forces from various directions, and the seismic resistance of the resin tube 13 with respect to the pipe 6 is enhanced.
The helical pitch Pn of the wave-like portion 41 is the Fibonacci sequence in which the difference, the equal ratio, or the general term (An) is represented by the sum of the previous term (An-2) and the next term (An-1) along the longitudinal direction L1. You may set to the separation dimension relationship based on. In this case, the spiral pitch Pn of the wave-like portion 41 is the same location as the width dimension T1 of the wave-like portion 40, but is indicated by a different symbol for convenience.

FIG. 5 (c) shows a fifth embodiment of the present invention. The fifth embodiment is different from the first embodiment in that a cylindrical net 42 is embedded in the resin tube 13.
The cylindrical net 42 is woven in a net shape from vertical thin wires 42a and horizontal thin wires 42b made of metal such as stainless steel. For this reason, the resin tube 13 itself is solidified, and the earthquake resistance of the resin tube 13 with respect to the pipe 6 is enhanced. The vertical thin wires 42a and the horizontal thin wires 42b are not limited to metal thin wires, but may be formed by braiding with plastic fibers such as polyamide that is rich in stretch flexibility.

FIG.5 (d) shows Example 6 of this invention. Example 6 differs from Example 1 in that a spiral spiral wire 43 having a predetermined pitch P1 is embedded in the resin tube 13. For this reason, as in Example 5, the resin tube 13 itself is solidified, and the earthquake resistance of the resin tube 13 with respect to the pipe 6 is enhanced.
The predetermined pitch P1 is not limited to the equidistant dimension, and the equal difference, the equal ratio, or the general term (An) along the longitudinal direction L1 is represented by the sum of the previous term (An-2) and the next term (An-1). It is also possible to set the separation dimension relationship based on the Fibonacci sequence. In this case, there is an advantage that the flexibility of the resin tube 13 is increased, and the resin tube 13 is easily inverted and displaced together with the lining cloth tube 10.

FIG. 6A shows Example 7 of the present invention. The difference between Example 7 and Example 1 is that one side surface portion of the resin tube 13 in the longitudinal direction L1 is formed by a stretchable woven fabric ribbon 50 having a predetermined width dimension Td. The elastic band ribbon 50 can be flexibly displaced in, for example, the directions of arrows N1 and N2 and the directions of arrows M1 and M2 perpendicular thereto.
For this reason, the flexibility of the resin tube 13 is increased, and when the resin tube 13 is used together with the lining cloth tube 10, the resin tube 13 is easily inverted and displaced together with the lining cloth tube 10, and the belt ribbon 50 is lined after the inversion. It integrates with the cross tube 10 and contributes to reinforcement.

FIG. 6B shows an eighth embodiment of the present invention. Example 8 differs from Example 1 in that the resin tube 13 connects the resin cylinder part 51a and the elastic ribbon cloth ribbon 51b having a predetermined width dimension Te alternately in the longitudinal direction L1. Is formed. The telescopic cylindrical ribbon 51b can be flexibly displaced in the directions of arrows N1 and N2 and in the directions of arrows M1 and M2 perpendicular thereto as in the seventh embodiment.
For this reason, as in Example 7, the flexibility of the resin tube 13 is increased, and when the resin tube 13 is used together with the lining cloth tube 10, the resin tube 13 is easily inverted and displaced together with the lining cloth tube 10. After that, the cylindrical ribbon 51b is integrated with the lining cloth tube 10 and contributes to reinforcement.

(Modification)
(A) The resin tube 13 may be formed in an accordion shape, and the shape may be variously changed according to the use situation and the construction situation.
(B) As the pipe 6, not only a drain pipe but also an air-conditioning duct or an exhaust duct (industrial duct or kitchen duct) may be applied.

  In the present invention, during construction work of the lining cloth pipe, the reinforcing resin tube is integrally adhered to the inner peripheral portion of the lining cloth pipe to form the inner surface layer of the liner layer. For this reason, a liner layer can be reinforced and it contributes to the improvement of the earthquake resistance of piping. The provision of earthquake resistance to piping stimulates demand from plumbers and can be widely applied to the chemical and mechanical industries through the distribution of related parts.

6 Piping 7, 17 Liner layer 8, G striated body 10 Lining cloth tube 13 Resin tube 14 Paint 19 Pressurized balloon 30 Hot water supply circulation means 40, 41 Wavy portion 42 Cylindrical network 42a Vertical fine wire 42b Horizontal fine wire 43 Spiral fine wire 50 Band Ribbon 51a Resin Tube 51b Tube Ribbon T1, T2 Wave Width P1 Spiral Fine Wire Pitch Td, Te Width

Claims (12)

Pressing the lining cloth pipe impregnated with liquid paint and reversing the front and back, the inner circumferential surface of the lining cloth pipe reversed on the front and back is in close contact with the inner wall of the pipe, the depth direction of the pipe in the inverted state In the piping lining device that is moved to form a liner layer,
It has a length according to the lining cloth tube, covers the outer periphery of the lining cloth tube, reverses with the lining cloth tube, and is integrally attached to the inner periphery of the inverted lining cloth tube A piping lining apparatus comprising a reinforcing resin tube which is in close contact with the inner layer of the liner layer.   The piping lining apparatus according to claim 1, wherein the lining cloth pipe is made of a flexible woven fabric containing chemical fibers such as glass fiber and polyethylene.   A reinforcing resin tube having an inner surface layer is provided by pressing and intimately contacting the inner peripheral surface of the liner layer by expansion of a pressurized balloon inserted into a pipe having a liner layer formed on the inner peripheral surface by a paint. Piping lining equipment.   The pipe lining device according to any one of claims 1 and 3, wherein the resin tube is made of urethane resin, nylon resin, or natural rubber.   The piping lining device according to any one of claims 1 and 3, wherein an outer surface of the resin tube forms a corrugated portion that undulates along a longitudinal direction.   The inner surface of the resin tube forms a corrugated portion having a circular arc shape that undulates along the longitudinal direction. Piping lining equipment.   The pipe lining device according to any one of claims 1 and 3, wherein a cylindrical net woven in a net shape from vertical fine wires and horizontal fine wires is embedded in the resin tube.   The pipe lining device according to any one of claims 1 and 3, wherein the resin tube has spiral spiral wires embedded at a predetermined pitch interval.   The predetermined pitch has an equal difference, an equal ratio along a longitudinal direction, or a separation dimension relationship based on a Fibonacci number sequence in which a general term is represented by a sum of a previous term and a next term. 8. The piping lining device according to 8.   The side surface portion in the longitudinal direction of the resin tube is formed of a stretchable woven fabric ribbon having a predetermined width dimension. Piping lining equipment.   4. The resin tube according to claim 1, wherein the resin tube is formed by alternately connecting a resin tube portion and a stretchable woven tube ribbon having a predetermined width dimension. The piping lining apparatus as described in one.   The piping lining according to any one of claims 1 and 3, further comprising a hot water supply circulation means for circulating and flowing hot water brought into direct contact with the resin tube into the piping after the liner layer is applied. apparatus.

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