KR101265736B1 - Structure of non-woven fabric for repairing pipe, manufacturing equipment of liner for repairing pipe and method of repairing pipe by non-excavation - Google Patents

Abstract

The present invention provides a pipe repair structure, a pipe repair liner manufacturing apparatus, and water and sewage non-excavation overall repair method. The piping repair structure according to the embodiment of the present invention, the first liner comprising a tube-shaped first nonwoven structure impregnated with a curable resin, and a first coating film formed on the outer surface of the first nonwoven structure; A second liner comprising a tube-shaped second nonwoven structure facing the inner side of the first nonwoven structure and having a curable resin impregnated therein, and a second coating film formed on the inner side of the second nonwoven structure; The second liner is located inside the first liner.

Description

Structure of non-woven fabric for repairing pipe, manufacturing equipment of liner for repairing pipe and method of repairing pipe by non-excavation}

The present invention relates to a pipe repair structure, a pipe repair liner manufacturing apparatus, and a water and sewage non-excavation overall repair method, and more specifically, a pipe repair structure and a pipe repair liner manufacture capable of increasing the repair construction completion rate for water and sewage pipes. Apparatus and water and sewage non-excavation overall repair method.

With urbanization, various pipes such as water and sewage pipes and gas pipes were buried underground, and these pipes gradually ageed and corrosion occurred over time. Corrosion of pipes causes leakage of water and sewage, pollution of drinking water, and gas leaks.

Excavation works to repair water and sewage pipes or gas pipes buried underground cause social costs such as huge construction costs, heavy traffic, safety accidents, and environmental problems. Accordingly, water and sewage non-excavation whole repair method began to be developed. In particular, in Korea, the road is narrow and there are many bends, and there are many connecting parts such as branch pipe connections and manholes. In addition, since the depth of embedding of the pipe is deep, the working environment is poor, and many sites where the additional cost used for removing obstacles are consumed are large, so the non-excavable pipe repair method is advantageous.

The problem to be solved by this invention is to provide the piping repair structure which the impregnation property of cured resin improved and was excellent in mechanical strength.

Another object of the present invention is to provide an apparatus for manufacturing a pipe repair liner using the pipe repair structure.

Another object of the present invention is to provide a water and sewage non-excavation repair method using the pipe repair liner.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to one or more exemplary embodiments, a pipe repair structure includes a tube-shaped first nonwoven structure impregnated with a curable resin, and a first coating film formed on an outer surface of the first nonwoven structure. A first liner, a tube-shaped second nonwoven structure facing the inner surface of the first nonwoven fabric structure, impregnated with a curable resin, and a second coating film formed on the inner surface of the second nonwoven fabric structure. 2 may include a liner, wherein the second liner may be located inside the first liner.

According to another aspect of the present invention, there is provided a pipe repair liner manufacturing apparatus, wherein a side of a pipe repair structure is fixed, and a resin injection portion for injecting a curable resin into the pipe repair structure, and the resin injection. The resin supply part which supplies the said curable resin to the part, the conveyance roller part which conveys the said piping repair structure in which the said curable resin was injected, and the said curable resin injected into the said piping repair structure are in the said piping repair structure A crimping part for spreading and a frame part for mounting the resin injecting part, the resin supplying part, the conveying roller part, and the crimping part, wherein the piping repair structure includes a tubular first nonwoven fabric structure in which a curable resin is impregnated. And a first liner including a first coating film formed on an outer surface of the first nonwoven fabric structure, and the first nonwoven fabric. A second liner comprising a tubular second nonwoven structure facing the inner side of the structure and impregnated with a curable resin, and a second liner including a second coating film formed on the inner side of the second nonwoven structure; May be located inside the first liner.

Water and sewage non-excavation overall repair method according to another embodiment of the present invention for achieving the above object, the step of irradiating the inside of the pipe, the cleaning step for removing foreign matter present in the inside of the pipe, and for repairing the pipe Manufacturing a pipe repair liner to be inserted into the pipe using a structure, inserting a pipe repair liner into the pipe, inflating air by injecting the pipe repair liner, and expanding the expanded And a step of curing the liner, wherein the pipe repair structure includes: a first liner including a tube-shaped first nonwoven structure impregnated with a curable resin and a first coating film formed on an outer surface of the first nonwoven structure. And a tube-shaped second nonwoven structure facing the inner side surface of the first nonwoven fabric structure and impregnated with a curable resin, and the second A second liner including a second coating film formed on the inner side of the nonwoven fabric structure, wherein the second liner may be located inside the first liner.

Specific details of other embodiments are included in the detailed description and the drawings.

Pipe repair structure according to an embodiment of the present invention is improved the impregnation of the curable resin, excellent mechanical strength.

In addition, the apparatus for manufacturing a pipe repair liner according to an embodiment of the present invention may directly manufacture a pipe repair liner at a repair work site.

According to the water and sewage non-excavation total repair method according to an embodiment of the present invention, there are the following effects.

When hardening the liner for water and sewage pipe repair inserted in piping, the thickness of resin becomes uniform, and the completeness for piping repair construction can be improved.

Liner for repairing pipes can be impregnated directly on site to facilitate transport and storage.

The length and width of the liner can be adjusted to suit the characteristics of the site and can be manufactured directly on site.

1 is a perspective view of a pipe constructed by the water and sewage non-excavation whole repair method using the pipe repair structure according to the first embodiment of the present invention.
FIG. 2 is a cross-sectional view of the pipe of FIG. 1 taken along line II-II '. FIG.
3A is a perspective view of a pipe repairing structure according to a first embodiment of the present invention.
3B is a cross-sectional view taken along the line III-III ′ of FIG. 3A.
Figure 4 is a schematic diagram of a pipe repairing line manufacturing apparatus according to a second embodiment of the present invention.
5 is a perspective view of a pipe repairing liner manufacturing apparatus according to a second embodiment of the present invention.
FIG. 6 is a cross-sectional view of the pipe repairing liner manufacturing device of FIG. 5 taken along line VV ′. FIG.
FIG. 7 is a schematic view of a resin injecting part included in a pipe repair liner manufacturing apparatus of FIG. 4.
FIG. 8 is a perspective view of a compression roller part included in the apparatus for manufacturing a liner for repairing pipes of FIG. 4. FIG.
9 to 16 are schematic views showing the operation according to the water and sewage non-excavation overall repair method according to a third embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Below. 1 to 16, a pipe repair structure, a pipe repair liner manufacturing apparatus and a water and sewage non-excavation overall repair method according to embodiments of the present invention will be described in detail.

First, referring to Figs. 1 to 3B, the piping repair structure according to the first embodiment of the present invention will be described in detail. 1 is a perspective view of a pipe constructed by the water and sewage non-excavation whole repair method using the pipe repair structure according to the first embodiment of the present invention, and FIG. 2 is a cut line of the pipe of FIG. 3A is a perspective view of a piping repair structure according to a first embodiment of the present invention, and FIG. 3B is a cross-sectional view taken along the line III-III ′ of FIG. 3A.

Piping repair structure according to the first embodiment of the present invention can be used in water and sewage non-excavation overall repair method. Before describing the piping repair structure, the water and sewage non-excavation overall repair method will be briefly described as follows. That is, in the water and sewage non-excavation repair method, a pipe repair liner (L) including the nonwoven fabric structures 11 and 21 impregnated with a curable resin is inserted into a pipe 40 to be repaired and cured by The inside of the 40 is reinforced by the piping repair liner L to repair the damaged pipe 40.

1 and 2, a liner L for repairing a pipe is inserted into an inner surface of the damaged pipe 40. Pipe repair liner (L) is to prevent the flow of fluid such as sewage, water and gas in the pipe 40 through the breakage portion 45 of the pipe 40 and to prevent foreign substances from flowing into the pipe (40). Prevents. The pipe repair liner L may include a pipe repair structure 1 impregnated with a curable resin.

3A and 3B, the pipe repair structure 1 includes a first liner 10 and a second nonwoven fabric including a first coating layer 13 surrounding an outer surface of the first nonwoven fabric structure 11. The second liner 20 may include a second coating layer 23 surrounding the inner surface of the structure 21. Here, the outer surface of the first nonwoven fabric structure 11 means a surface on which the piping repair structure 1 is in contact with the outside world, and the inner surface of the second nonwoven fabric structure 21 is formed by the center of the piping repair structure 1. It means the opposite side.

Meanwhile, the first and second nonwoven structures 11 and 21 may have a tube shape and may extend in one direction, respectively.

On the other hand, the inner surface of the first nonwoven structure 11 of the first liner 10 and the outer surface of the second nonwoven structure 21 of the second liner 20 face each other such that the first liner 10 and the second liner face each other. Liner 20 may be located. That is, the second liner 20 may be positioned inside the first liner 10, and the first liner 10 may surround the outer surface of the second liner 20 as a whole. In this case, the first liner 10 and the second liner 20 may be spaced apart from the predetermined interval 31. Curable resin is injected into the gap 31, whereby the first and second nonwoven fabric structures 11 and 21 may be impregnated with the curable resin. On the other hand, after the piping repair liner L is installed in the pipe 40, the gap 31 disappears. That is, the first liner 10 and the second liner 20 are in close contact with each other during the repair work, so that the gap 31 disappears. Hereinafter, the piping repair structure 1 and the piping repair liner L will be used separately as follows. That is, the piping repair structure 1 indicates that the curable resin is not completely impregnated with the first and second nonwoven fabric structures 11 and 21, and the pipe repair liner L is the first and second nonwoven fabric structures 11. , 21) is completely impregnated with the curable resin and shows a state that can be inserted into a broken pipe.

When the first coating layer 13 is filled with air in the first and second nonwoven fabric structures 11 and 21 and the first and second nonwoven fabric structures 11 and 21 are expanded, the outside of the pipe repair liner L It becomes the cover surrounding the side. In this case, the first coating layer 13 may be used a variety of materials, such as vinyl, polypropylene or polystyrene that can be used as a coating material. In addition, it is also possible to use a cover formed of a heat insulating material so that the resin can be cured according to the construction environment.

On the other hand, the second coating film 23 is a cover surrounding the inner surface of the pipe repair liner (L) to prevent the fluid or the like flowing in the pipe from penetrating the pipe repair liner (L) or the outside. At this time, the second coating layer 23 may be used a variety of materials such as vinyl, polypropylene or polystyrene that can be used as a coating material. In addition, it is also possible to use a cover formed of a heat insulating material so that the resin can be cured according to the construction environment.

The curable resin used in the present invention may include unsaturated polyester (UP). It may also include methyl methacrylate (MMA). The curable resin may comprise 70% to 100% of unsaturated polyester (UP) or 0% to 30% of methyl methacrylate (MMA) based on the total weight.

When the content of the unsaturated polyester (UP) is 70% or more, when the curable resin impregnated in the pipe repair liner (L) is cured, it is possible to secure a mechanical strength that can sufficiently protect the damaged portion of the pipe. On the other hand, when the content of methyl methacrylate (MMA) is 30% or less, the curable resin can shorten the curing time while ensuring mechanical strength.

In addition, the curable resin may contain 0.5 to 2.0% by weight of the polymerization initiator and 0.5 to 2.0% by weight of the accelerator.

As the polymerization initiator, for example, an organic peroxide such as benzoylperoxide (BPO), a redox agent, an azo compound, or the like may be used. When the organic peroxide is used as a polymerization initiator, there is a risk of explosion when the impact or high temperature is reached. However, benzoyl peroxide is less sensitive to impact than other peroxides and can be safely used.

The accelerator serves to accelerate the polymerization reaction, for example dimethylamine (DMA) may be used.

Next, with reference to Figures 4 to 8, description will be made on the liner manufacturing apparatus for repairing a pipe according to a second embodiment of the present invention. Figure 4 is a schematic diagram of a pipe repair liner manufacturing apparatus according to a second embodiment of the present invention, Figure 5 is a perspective view of a pipe repair liner manufacturing apparatus according to a second embodiment of the present invention, Figure 6 is Sectional drawing which cut the piping repair liner manufacturing apparatus by the V-V 'line, FIG. 7 is a schematic diagram of the resin injection part contained in the piping repair liner manufacturing apparatus of FIG. 4, FIG. It is a perspective view of the crimping roller part included in an apparatus.

4 to 8, the pipe repair liner manufacturing apparatus 2 according to the second exemplary embodiment of the present invention includes a resin injection unit 100, a resin supply unit 400, a transfer roller unit 300, and a compression unit ( 500, a pump 600, a recovery part 700, and a frame part 810 may be included.

First, the resin injecting part 100 injects the curable resin into the piping repair structure 1 according to the first embodiment of the present invention. To this end, the resin injecting part 100 may include a fixing part 110 for fixing one side of the piping repair structure 1. The method of fixing the piping repair structure 1 to the fixing unit 110 may be performed in various ways. For example, a hole (not shown) penetrating the pipe repair structure 1 may be formed and fixed on one side of the pipe repair structure 1, but is not limited thereto.

On the other hand, the resin injection unit 100 may include a resin supply pipe 120 to inject a curable resin into the piping repair structure (1). The resin supply pipe 120 may be connected to the resin supply unit 400 and the pump 600.

That is, the resin supply unit 400 is filled with the curable resin, and the curable resin filled in the resin supply unit 400 moves through the resin supply pipe 120 by the pump 600, and into the piping repair structure 1. May be injected.

Here, the resin supply unit 400 may include a resin storage container 410 for storing the curable resin. In addition, the resin supply unit 400 may include a flow meter (not shown) that can measure the amount of the curable resin to adjust the amount of the curable resin required in the construction for repair of the damaged pipe. Thereby, an operator can check the damage degree of the piping directly in the field, and can adjust the quantity of curable resin required for maintenance work. Accordingly, it is possible to prevent the loss of the curable resin to improve the economics and efficiency of the entire operation.

Meanwhile, the resin supply pipe 120 may overlap the gap 31 between the first liner 10 and the second liner 20 of the piping repair structure 1. Accordingly, the curable resin is injected into the gap 31 and comes into contact with the inner surface of the first nonwoven fabric structure 11 and the outer surface of the second nonwoven fabric structure 21.

The conveying roller part 300 conveys the piping repair structure 1 into which the curable resin was injected to one side or the other side. To this end, the conveying roller unit 300 may include a plurality of conveying rollers 310.

The crimping part 500 allows the curable resin injected into the piping repair structure 1 to be evenly spread on the first and second nonwoven fabric structures 11 and 21.

The compression unit 500 may include a first compression roller 510, a second compression roller 520, a first support 850, a second support 860, and a first actuator 865. The second compression roller 520 is continuously disposed on the transfer roller 310 and coupled to the frame 810. The second pressing roller 520 may be arranged more densely than the transfer roller 310, and the first pressing roller 510 is formed to face the second pressing roller 520.

Between the first compression roller 510 and the second compression roller 520 is a pipe repair structure 1 is injected with a curable resin, the pipe repair structure 1 is a rotational force of the second compression roller 520 Is transported by The first compression roller 510 is supported by the first support 850 and the second support 860, and the pressure is applied downward by the first actuator 865.

The curable resin injected into the pipe repair structure 1 while passing through the first pressing roller 510 and the second pressing roller 520 may be more uniformly impregnated in the first and second nonwoven structures 11 and 21. Can be. Thereby, the 1st and 2nd nonwoven fabric structure 11 after having passed through the crimping part 500 rather than the area of curable resin impregnated in the 1st and 2nd nonwoven fabric structures 11 and 21 before passing through the crimping part 500. , 21) can be made larger the area of the curable resin. In addition, the pipe repair structure 1 passed between the first compression roller 510 and the second compression roller 520 becomes thinner to reduce the overall volume of the pipe repair liner (L).

The pipe repair structure 1 passing through the first compression roller 510 and the second compression roller 520 moves to the recovery part 700.

On the other hand, the piping repair structure (1) is repeatedly pressed several times so that the curable resin injected into the piping repair structure (1) can be uniformly impregnated in the first and second nonwoven fabric structures (11, 21). 500). Through this process, the pipe repair structure 1 is made of a pipe repair liner L impregnated with a curable resin in the first and second nonwoven fabric structures 11 and 21.

The recovery part 700 may include a recovery roller 710. Thereby, the piping repair liner L or the piping repair structure 1 discharged | emitted from the crimping | compression-bonding part 500 can be collect | recovered using a separate power. The recovery part 700 may be fixed to the third filler 840 and may be connected to the frame part 810, and may be formed to be detachable or to be folded into the frame 810.

On the other hand, the frame portion 810 may be mounted on a transport means such as a vehicle or a trailer. That is, the above-described pipe repair liner manufacturing apparatus 2 is capable of mounting all the structures inside the compact frame portion 810, thereby reducing the overall volume. That is, the resin injection unit 100, the resin supply unit 400, the transfer roller unit 300, the compression unit 500, the pump 600, the recovery unit 700, and the like may be mounted on the frame unit 810. . Therefore, it can be mounted on a variety of transfer means and can be immediately moved to the site, it is possible to manufacture the liner L for repairing the pipe as soon as necessary in the field.

Hereinafter, the water and sewage non-excavation whole repair method according to the third embodiment of the present invention will be described in detail with reference to FIGS. 9 to 16. 9 to 16 are views schematically showing operations according to the water and sewage non-excavation overall repair method according to the third embodiment of the present invention.

First, as a preliminary preparation process for repairing the pipe 40, the inside of the pipe 40 is checked to determine whether it is damaged, and the position to be repaired is determined. As a method of inspecting the inside of the pipe 40, the robot may be equipped with an endoscope or a camera, and the broken part may be visually checked. The endoscope or the robot may be introduced through the manhole (see 45a and 45b of FIG. 9), and if necessary, a part of the pipe 40 may be excavated and inserted.

Next, referring to FIG. 9, when it is determined that repair of the pipe 40 is necessary during the irradiation process of the pipe 40, the inside of the pipe 40 is cleaned for repair work. Specifically, the upstream pipe 40 is blocked by the order device 60 to prevent the inflow of water or sewage into the pipe 40 to be worked. Then, high pressure washing water is injected into the pipe 40 using the high pressure injector 52 to clean the inside of the pipe 40. With the injection of the washing water by the high-pressure injector 52 as described above, the inside of the pipe 40 is cleaned by sucking foreign substances or deposits therein.

Subsequently, referring to FIG. 10, obstacles that interfere with the work in the pipe 40 are removed to repair the pipe 40. Here, the obstacle that interferes with the work is to protrude into the pipe 40, such as the projecting portion 35 of the branch pipe 50 to form irregularities on the inner surface of the pipe 40. In order to insert the pipe repair liner L into the pipe 40, the inner surface of the pipe 40 must be uniformly maintained. At this time, the operation of removing the obstacle may be different in the working manner according to the diameter of the pipe (40). That is, the repair of the pipe 40 having a diameter enough for the worker to enter directly can be repaired by the operator can directly enter, or the diameter of the worker can not enter, or the internal environment is dangerous to enter the worker directly In the absence of work, work can be performed using the work robot 50. The cutting tool 55 is attached to the work robot 50 to remove all obstacles in the pipe 40.

Subsequently, referring to FIG. 11, a pipe repair liner L for repair of the pipe 40 is manufactured on-site. When the length, width, etc. of the piping repair liner L required in the irradiation process of the pipe 40 mentioned above are determined, the piping repair liner L is manufactured directly in the field. At this time, the pipe repair liner L is manufactured using the above-described pipe repair liner manufacturing apparatus (see "2" in FIG. 4) and the pipe repair structure (see "1" in FIG. 3A). In order to supply the pipe repair liner L suitable for the site, it is preferable to manufacture the pipe repair liner L directly on the site. The pipe repair liner manufacturing device 2 may be mounted and used in a moving means such as a vehicle, and may be used after being fixedly installed in the field.

Pipe repair liner (L) can be manufactured immediately before insertion into the pipe 40 in consideration of the pot life of the resin can be inserted immediately.

Next, referring to FIG. 12, the pipe repair liner L is inserted into the pipe 40. The pipe repair liner L may be inserted into the pipe 40 by the work robot 50. At this time, the pipe repair liner (L) prepared in advance in the field can be inserted into the pipe 40 by connecting to the work robot 50, but the pipe repair liner manufacturing device (2) is installed in the field to repair the pipe Simultaneously with the manufacture of the liner L, it can be inserted in the piping 40. That is, the piping repair liner L is manufactured in the apparatus for manufacturing the piping repair liner L, and is not wound by a separate recovery part (see 700 in FIG. 4), and is directly connected to the work robot 50 to provide piping. 40 may be inserted inside. In this way work time can be reduced.

Subsequently, referring to FIG. 13, both ends of the pipe repair liner L inserted into the pipe 40 are sealed, and the air injection pipe 70 is inserted to expand the pipe repair liner L. At this time, the air injected into the pipe repair liner L expands the pipe repair liner L to closely adhere the pipe repair liner L to the inside of the pipe 40, and the pipe repair liner L To maintain the same shape as the pipe (40).

On the other hand, both ends of the pipe repair liner (L) can be sealed in a bundled manner, in consideration of the air pressure inside the pipe repair liner (L) without using a separate sealing means of the pipe repair liner (L) It may be sealed by a sealing surface formed at the end.

Subsequently, referring to FIG. 14, the expanded liner L is maintained for a predetermined time to cure the resin contained in the pipe repair liner L. The curing time of the resin may vary depending on the thickness and diameter of the pipe repair liner L, and may vary depending on the composition ratio of the material contained in the resin. Therefore, the pipe repair liner L may be kept inflated for about 1 to 8 hours in some cases.

Subsequently, referring to FIG. 15, both ends of the cured pipe repair liner L are cut to form a pipe passage therein.

Finally, referring to FIG. 16, the pipe repair liner L of the portion connected to the branch pipe 50 is drilled to communicate between the pipe 40 and the branch pipe 50. That is, since the pipe repair liner L is integrally penetrated to the beginning and the end of the pipe 40, the inner side of the pipe 40 for connection with the branch pipe 50 branched from the middle of the pipe 40. Perforate and communicate. Such a drilling operation can be performed using the work robot 50 to which the cutting tool 55 is attached. When such work is completed and the order apparatus 60 installed in the upstream pipe of the piping 40 is removed, repair of the piping 40 will be completed.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Structure for piping repair 2: Liner manufacturing apparatus for piping repair
10: first liner 11: first nonwoven structure
13: first coating film 20: second liner
21: second nonwoven fabric structure 23: second coating film

Claims (11)

A first liner comprising a tubular first nonwoven structure impregnated with the curable resin and a first coating film formed on an outer surface of the first nonwoven structure;
A second liner comprising a tube-shaped second nonwoven structure facing the inner side of the first nonwoven structure and having a curable resin impregnated therein, and a second coating film formed on the inner side of the second nonwoven structure;
The second liner is a structure for repairing the pipe is located inside the first liner. The method according to claim 1,
The curable resin is a piping repair structure containing an unsaturated polyester (UP). One side of the piping repair structure is fixed, the resin injection portion for injecting the curable resin into the piping repair structure;
A resin supply unit supplying the curable resin to the resin injection unit;
A conveying roller unit for conveying the piping repair structure into which the curable resin is injected;
A crimping part for spreading the curable resin injected into the pipe repair structure in the pipe repair structure;
It includes a frame portion for mounting the resin injection portion, the resin supply portion, the transfer roller portion and the pressing portion,
The piping repair structure,
A first liner comprising a tubular first nonwoven structure impregnated with a curable resin, a first coating film formed on an outer surface of the first nonwoven structure, and
A second liner comprising a tube-shaped second nonwoven structure facing the inner side of the first nonwoven structure and having a curable resin impregnated therein, and a second coating film formed on the inner side of the second nonwoven structure;
The second liner is an apparatus for manufacturing a liner for pipe repair located inside the first liner. The method of claim 3,
The resin injecting portion includes a resin supply pipe,
The resin supply pipe is a pipe repair liner manufacturing apparatus connected to the resin supply portion. 5. The method of claim 4,
And a pump for moving the curable resin from the resin supply part to the resin injecting part. The method of claim 3,
The crimping portion manufacturing liner for repairing a pipe comprising a plurality of crimping rollers. In water and sewage non-excavation whole repair method used in plumbing repair work site.
Examining the inside of the pipe;
A cleaning step of removing foreign substances present in the inside of the pipe;
Manufacturing a pipe repair liner to be inserted into the pipe using a pipe repair structure;
Inserting a pipe repair liner into the pipe;
Inflation by injecting air into the pipe repair liner;
Including curing the expanded liner,
The piping repair structure,
A first liner comprising a tubular first nonwoven structure impregnated with the curable resin, a first coating film formed on an outer surface of the first nonwoven structure, and
A second liner including a second nonwoven structure having a tube shape facing the inner side of the first nonwoven structure and having a curable resin impregnated therein, and a second coating film formed on the inner side of the second nonwoven structure;
The second liner is a water and sewage non-excavation overall repair method located inside the first liner. The method of claim 7, wherein
The step of manufacturing the curable liner, using a liner manufacturing apparatus for repairing the pipe,
The pipe repair liner manufacturing apparatus,
One side of the piping repair structure is fixed, the resin injection portion for injecting the curable resin into the piping repair structure,
A resin supply unit for supplying the curable resin to the resin injection unit;
A conveying roller part for conveying the pipe repair structure into which the curable resin is injected;
A crimping portion for spreading the curable resin injected into the piping repair structure in the piping repair structure;
A water and sewage non-excavation total repair method including the resin injection portion, the resin supply portion, the transfer roller portion, and a frame portion for mounting the crimping portion. The method of claim 8,
Preparing the curable liner,
Water and sewage non-excavation overall repair method comprising the step of injecting the curable resin between the first nonwoven structure and the second nonwoven structure. 10. The method of claim 9,
Preparing the curable liner,
After the step of injecting the curable resin, water and sewage non-excavation overall repair method further comprising the step of passing the pipe repair structure through the crimping. The method of claim 10,
The area of the said curable resin impregnated in the said 1st and 2nd nonwoven fabric structure is a water and sewage non-excavation whole repair method which becomes wider before the piping repair structure passes through the said crimping | compression-bonding part.

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