JP2018155266A - In-pipe conduit lining method and in-pipe conduit lining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-pipe conduit lining method and in-pipe conduit lining device capable of reliably lining some portion in a pipe conduit regardless of an inner surface shape of the pipe conduit.SOLUTION: An in-pipe conduit lining method comprises an insertion step of inserting a tube body 10 capable of discharging a lining material M into a pipe conduit P, and a lining step of discharging the lining material M from the tube body 10 to line an inner surface of the pipe conduit P. The lining step comprises an adhesion step of expanding the lining material M from the tube body 10 in a balloon manner by flowing fluid into the tube body 10, to make it adhere to the inner surface of the pipe conduit P, and a penetration step of penetrating the lining material M expanded in the balloon manner along an insertion direction of the tube body 10.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an in-pipe lining method and an in-pipe lining device, and more particularly to an in-pipe lining method and an in-pipe lining device capable of partially lining an inner surface of a pipe.

  In recent years, in pipe lines (for example, flexible pipes) that circulate fluid (for example, city gas or LP gas), part of the pipe wall is damaged (for example, pinholes) due to factors such as nailing and aging due to interior construction. In such a case, a technique for partially repairing the inside of the pipeline including the damaged portion has been proposed.

  As a technique for repairing such a pipeline, for example, a construction method described in Patent Document 1 is known.

  In the construction method described in Patent Document 1, first, liquid resin is filled in a plug shape including a damaged portion in a plug shape, and then the filled resin is flowed by blowing air into the pipeline. The peripheral portion is lined (forms a coating) while the resin is invaded into the damaged portion.

  According to such a construction method, since a part of the pipeline is lined with resin, it is possible to partially repair the inside of the pipeline including the damaged portion, although the configuration is simple.

  Furthermore, as a technique for partially lining the inside of a pipeline, a method as described in Patent Document 2 is also known in addition to the method described in Patent Document 1.

  In the construction method described in Patent Document 2, after a sheet-like lining material is wound around an elastic body connected to a hose, the diameter of the elastic body is increased by feeding air into the hose inserted in the pipe. The lining material is pressure-bonded to the inner surface of the pipeline including the damaged part.

  According to such a construction method, since a part of the pipeline is lined with a sheet-like lining material, the pipeline including the damaged part is partially repaired in the same manner as the technique described in Patent Document 1. It is possible.

Japanese Patent No. 2732022 Patent No. 5778455

  By the way, in the construction method described in Patent Document 1, the resin is fluidized (moved) by directly blowing air to the liquid resin, and thereby, the damaged portion is closed and the inside of the pipeline is lined. ing.

  In general, when air is vigorously blown onto a liquid fluid, air bubbles are often mixed in the fluid. The same can be said for the liquid resin described in Patent Document 1.

  That is, in the construction method described in Patent Document 1, it can be said that there is a high possibility that the damaged portion is blocked and the lining in the pipe line is formed by the resin mixed with bubbles. In such a case, depending on the amount of bubbles mixed in the resin, the damaged portion cannot be sufficiently blocked (the bubbles become a passage that penetrates the tube wall), and the pipeline is not actually repaired. It is easy to invite the same result.

  In this respect, in the construction method described in Patent Document 2, since the member for repairing the damaged portion is a sheet-like lining material, there is no problem due to mixing of bubbles as in the technique described in Patent Document 1. .

  However, in the construction method described in Patent Document 2, since the elastic body around which the lining material is wound must be moved to the damaged portion in the pipe, for example, there is a damaged portion at the tip of the bent portion of the pipe. In this case, depending on the length of the elastic body, the degree of bending of the pipe, etc., the elastic body may be caught in the pipe and the lining material may not be moved to the damaged part.

  Further, in the case where a damaged portion is present in the bent portion of the pipeline, even if the lining material can be moved to the damaged portion, the lining material cannot be closely adhered to the inner surface of the pipeline. There is a high possibility, and in such a case, there is a problem that the damaged portion cannot be sufficiently closed.

  The present invention has been made to solve the above inconveniences, and an object of the present invention is to provide an in-pipe lining method capable of reliably lining a part of the pipe regardless of the inner shape of the pipe. And providing an in-pipe lining device.

  According to the in-pipe lining method of the present invention, the above-described problem is an insertion step of inserting a tube body for discharging the lining material into the pipe line, and after performing the insertion step, the lining material is removed from the tube body. A lining process for lining the inner surface of the pipe line by discharging the lining material, wherein the lining process is performed by pouring a fluid into the tube body by flowing the lining material into the tube body. An attachment step of attaching to the inner surface of the conduit in a state of being bulged from a balloon, and a penetration step of penetrating the lining material bulged in a balloon shape along the insertion direction of the tube body. Solved by.

  Further, the above-described problem is an in-pipe lining device that linings the inner surface of a pipe line using a lining material according to the present invention, wherein a discharge port through which the lining material can be discharged is provided. The lining material is swelled in a balloon shape from the discharge port when fluid is poured into the tube body in a state of being disposed at the discharge port. It is also solved by consisting of materials.

  In the above configuration, when a fluid is blown into the tube body inserted into the conduit, the lining material is discharged from the tube body as if a balloon is inflated (inflated in a balloon shape).

  Here, the lining material is made of a material having “stretchability” that can be inflated in a balloon shape, preferably a material having also “adhesiveness” that can be attached to the inner surface of the pipeline, For example, a semi-solid material obtained by dissolving vinyl acetate resin (thermoplastic resin) with a solvent such as ethanol or ethyl acetate can be used. In addition, when the present invention is applied to a pipe line (for example, a flexible pipe) that can be bent and deformed, in addition to having the above-mentioned “extensibility” and “adhesiveness”, it can be cured. It is preferable to use a material having a flexible “semi-curability”, for example, a semi-solid material as described above.

  Thus, in the above configuration, since the above-described material is used as the lining material, for example, even if the tube body on which the lining material is mounted in advance is moved in the pipeline, the lining material causes There is almost no problem that the tube body cannot pass through the bent portion of the pipeline.

  For this reason, in the said structure, it is possible to move a hose body to the desired position in a pipe line irrespective of the inner surface shape of a pipe line.

  And in the said structure, when a lining material is expanded at the desired position in a pipe line, it is comprised so that a thin-film-like lining material may adhere as if it is pressed with respect to a pipe line. For this reason, for example, a lining material can be brought into close contact with the inner surface shape of a pipe line even if the inner surface shape is a relatively complicated pipe line (for example, a so-called “flexible pipe”). Even when such a pipe has a defect such as a pinhole, the thin film lining material can be brought into close contact with the inner surface of the pipe while filling (repairing) this. Of course.

  After that, in the above configuration, the balloon-shaped lining material adhering to the inner surface of the pipe line is penetrated as if the balloon is broken along the extending direction of the pipe line (penetration process), and the part in the pipe line Complete lining is possible.

  Thus, in the said structure, the desired location in a pipe line can be lining reliably irrespective of the inner surface shape of a pipe line.

  In the in-pipe lining method, the penetrating step includes at least a step of penetrating the lining material by causing the fluid to flow out of the tube body, and a movement of the tube body along the insertion direction. It is preferable that any one of the steps of penetrating the lining material is included.

  In the in-pipe lining method, it is preferable that the hose body has a peripheral wall portion arranged to be separated from the discharge port so as to cover an outer periphery of the discharge port for discharging the lining material.

  Furthermore, in the in-pipe lining method, the tube body is a first tube body that discharges the lining material, a second tube body that is provided inside the first tube body and discharges the lining material, And the adhering step causes the fluid to flow into the first tube body, thereby causing the lining material to bulge out from the first tube body into a balloon shape and adhere to the inner surface of the conduit. After performing the adhering step and the first adhering step, the fluid is poured into the second tube body, thereby causing the lining material to bulge out from the second tube body into a balloon shape, and to And a second attaching step of attaching onto the lining material attached to the inner surface of the pipe line by an attaching step.

  On the other hand, the in-line lining device includes a fluid delivery device capable of flowing the fluid into the tube body, and the lining material is inflated in a balloon shape to the tube body by the fluid delivery device. It is preferable that it is made of a member that bursts when a predetermined amount of the fluid is poured.

  In the in-pipe lining device, it is preferable that the hose body has a peripheral wall portion arranged to be separated from the discharge port so as to cover an outer periphery of the discharge port.

  Further, in the in-pipe lining device, the tube body includes a first tube body having a first inflow portion into which the fluid is introduced and a first discharge portion through which the lining material is discharged, and the first tube. It is preferable to include a second tube body that is disposed inside the body and includes a second inflow portion into which the fluid is introduced and a second discharge portion that discharges the lining material.

  As described above, according to the in-pipe lining method and the in-pipe lining apparatus according to the present invention, it is possible to reliably place a desired portion in the pipe regardless of the shape of the inner surface of the pipe, while having a simple configuration. Can be lined.

It is a flowchart which shows an example of the lining method in a pipe line concerning this embodiment. It is sectional drawing for demonstrating an example of the insertion process of FIG. It is sectional drawing for demonstrating an example of the adhesion process of FIG. 1, (a) is a figure which shows the state in the middle of inflating lining material, (b) is a figure which shows the state after inflating lining material It is. It is sectional drawing for demonstrating an example of the penetration process of FIG. 1, Comprising: (a) is a figure which shows the state just before penetrating a lining material, (b) is a figure which shows the state immediately after penetrating a lining material. (C) is a figure which shows the state which has extracted the tube body. It is sectional drawing which shows the modification of the discharge port of a hose body. It is sectional drawing which shows the modification of a hose body. It is sectional drawing for demonstrating an example of the adhesion process using the hose body of FIG. 6, Comprising: (a) is a figure which shows the state which has performed the 1st adhesion process, (b) is the 1st adhesion process. The figure which shows the state immediately after rupturing the lining material expanded in (c) is the figure which shows the state which has performed the 2nd adhesion process, (d) is the rupture of the lining material expanded in the 2nd adhesion process. It is a figure which shows the state immediately after making it.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a flowchart showing an example of the lining method according to the present embodiment, FIG. 2 is a cross-sectional view for explaining an example of the insertion step of FIG. 1, and FIG. 3 is for explaining an example of the attaching step of FIG. FIG. 4 is a sectional view showing an example of the penetration process of FIG.

  As shown in FIG. 1, the in-pipe lining method according to the present embodiment includes a lining position specifying step A, an insertion step B performed after the lining position specifying step A, and a lining step C performed after the insertion step B. And. The insertion process B and the lining process C correspond to the “insertion process” and the “lining process” described in the claims, respectively.

First, the lining position specifying step A will be described with reference to FIG.
In the lining position specifying step A, an operation for specifying a portion for lining the pipe P, that is, a portion for performing the lining step C is performed. In addition, the said pipe line P corresponds to the "pipe line" as described in a claim.

  As shown in FIG. 2, the pipe line P according to the present embodiment is a flexible pipe made of a metal member (for example, stainless steel) that can be deformed by bending the shape by hand, and is a detached house or the like. It is laid as a gas pipe (city gas or LP gas pipe) in the wall of the building or under the floor. In the present embodiment, the pipe P is exemplified by a sheath provided on the outer periphery of the flexible pipe main body (original pipe).

  In the present embodiment, a hole H is formed in a part of the pipe wall of the pipe P due to nailing due to interior construction or corrosion due to deterioration over time. As a result, the hole H can be repaired. For this reason, in the lining position specifying step A according to the present embodiment, an operation for specifying which position of the pipe P the hole H is performed is performed.

As a method for specifying the position of such a hole H, as a result of a leak test (air tightness test), a known method performed when a leak point exists in the pipeline P, for example, a fiber scope, a stopper, and a leak specific treatment. It is possible to adopt a method of inserting a detection instrument such as a tool into the pipe P and confirming the leak location.
The lining position specifying step A ends when the position of the hole H (for example, the distance from the opening Pо such as the pipe end of the pipe P to the hole H) is specified, and then the insertion step B which is the next step. Is done.

Next, the insertion process B will be described with reference to FIG.
As shown in FIG. 2, in the insertion step B, the tube body 10 of the in-pipe lining device 1 described later is inserted from the opening Pо of the pipeline P, and the tube body 10 is specified in the lining position specifying step A. Move to the lining position.
Here, before giving a specific description of the insertion step B, the in-pipe lining device 1 used in the insertion step B and the lining step C that is the next step will be described. The in-pipe lining device 1 corresponds to the “in-pipe lining device” recited in the claims.

  As shown in FIG. 2, the in-pipe lining device 1 includes a tube body 10 and an air delivery device 20. The tube body 10 and the air delivery device 20 correspond to the “tube body” and the “fluid delivery device” described in the claims, respectively.

  The tube body 10 is formed of a tube-shaped member having flexibility capable of passing a bent portion of the pipe line P and the like and pressure resistance capable of circulating pressurized air. It can be configured using a pressure-resistant hose. The air corresponds to the “fluid” described in the claims.

  In this embodiment, the insertion process B and the lining process C are performed using the in-pipe lining device 1 configured as described above.

  In the insertion process B performed using such an in-pipe lining device 1, the lining material M is applied to the insertion side end 10 a of the tube body 10 before the tube body 10 is inserted into the opening P о of the pipe line P. It begins with the work of mounting. The insertion side end portion 10a and the lining material M correspond to the “discharge port” and the “lining material” described in the claims, respectively.

The lining material M can be inflated in a balloon shape in the lining process C, which will be described later, and can be attached to the inner surface of the pipe P when inflated in a balloon shape, that is, “extensibility”. And a material having “adhesiveness”. In this embodiment, as the lining material M, a semi-solid material obtained by dissolving a vinyl acetate resin with a solvent such as ethanol or ethyl acetate is employed.
In addition, according to such a lining material M, in addition to the above “extensibility” and “adhesiveness”, the “lining material M” has a “semi-curing property” that is flexible even when cured after being attached to the pipe P Therefore, even if the shape of the pipeline P is slightly deformed after lining, it is possible to expect the advantage that the lining material M is difficult to peel off from the inner surface of the pipeline P. . In this embodiment, as the lining material M, a material in which a vinyl acetate resin is dissolved in an alcohol such as ethyl acetate is used. However, any other material may be used as long as the material has “extendability” and “adhesiveness”. Needless to say, may be used.

  The attachment of the lining material M to the tube body 10 will be described. In this embodiment, a predetermined amount of the lining material M is packed in the tube body 10 and the opening edge of the insertion side end portion 10a is covered from the outside. I try to wear it.

In the insertion step B, the tube body 10 to which the lining material M is attached is inserted from the opening Pо of the pipe line P, and the insertion side end portion 10a is positioned in front of the hole H specified in the lining position specifying step A. The work is done until it is placed.
The insertion process B is completed by feeding the tube body 10 to a predetermined position in the pipe P, and then the lining process C, which is the next process, is performed.

Next, the lining process C will be described with reference to FIGS. 1, 3, and 4.
As shown in FIG. 1, the lining process C includes an adhesion process C-1 performed after the insertion process B and a penetration process C-2 performed after the adhesion process C-1. In addition, the said adhesion process C-1 and the penetration process C-2 correspond to the "attachment process" and the "penetration process" as described in a claim, respectively.

First, the adhesion process C-1 will be described with reference to FIG.
As shown in FIG. 3, in the attaching step C- 1, an operation of sending air pressurized by the air delivery device 20 into the tube body 10 is performed.

  When the pressurized air is fed into the tube body 10, the lining material M attached to the insertion side end portion 10a of the tube body 10 is ballooned from the insertion side end portion 10a as shown in FIG. As it swells, it gradually discharges, that is, swells like a balloon.

Thereafter, as the lining material M expands into a balloon shape, it is thinned, and when a predetermined amount of air is fed into the tube body 10, as shown in FIG. Along the inner surface shape of the pipe line P, the contact is made evenly (without a gap).
At this time, the hole H formed in the pipe line P is completely closed from the inner surface side of the pipe line P by the thinned lining material M.
In the present embodiment, when the lining material M is in such a state, the delivery of air from the air delivery device 20 is stopped, and the adhesion step C-1 is terminated.

  Next, the penetration process C-2 which is the next process of the adhesion process C-1 will be described with reference to FIG.

  As shown in FIG. 4, in the penetrating step C-2, an operation of penetrating the lining material M swelled in a balloon shape along the insertion direction of the tube body 10 is performed.

  In penetration process C-2 concerning this embodiment, as shown in Drawing 4 (a)-Drawing 4 (c), tube body 10 is moved several times back and forth along the insertion direction to channel P. Thus, the balloon-shaped lining material M is broken through.

  When the lining material M is penetrated in this way, a lining layer made of the thinned lining material M is formed in a part of the inner surface of the pipe P with the hole H closed. In this embodiment, the partial lining in the pipe line P is complete | finished by performing such a penetration process C-2.

  Thus, in this embodiment, when air is blown into the tube body 10 in which the lining material M is mounted on the tube body 10 (insertion side end portion 10a), the lining material M causes a balloon to expand from the insertion side end portion 10a. It is configured to be discharged as if it were.

  For this reason, when the lining material M is inflated at the position where the hole H is present in the pipe P, the thin-film lining material M sticks to the inner surface of the pipe P, so that the inner surface shape is Even if there is a hole H in the bellows-like pipe line (flexible pipe) P, the lining material M can be brought into close contact with the inner surface shape of the pipe line P while filling the hole H.

  Further, since the lining material M for lining the pipeline P is a semi-solid material, even if the inside of the pipeline P is moved with the lining material M attached to the insertion side end portion 10a of the tube body 10, The problem that the movement of the tube body 10 is restricted due to the lining material M hardly occurs.

  Thus, according to this embodiment, even if the inner surface shape of the pipe line P is a relatively complicated shape (according to this embodiment, a bellows shape), the tube body 10 is placed in a desired position in the pipe line P. It is possible to line the inner surface of the pipe P with the lining material M while repairing the hole H.

  Further, in the present embodiment, in the penetration step C-2, the lining material M inflated in the balloon shape in the adhesion step C-1 which is the previous step is penetrated by moving the tube body 10 in the front-rear direction. ing.

  That is, in this embodiment, since the lining material M is penetrated using the tube body 10 itself from which the lining material M has been discharged, there is an advantage that the operation can be performed very simply.

  In the penetration step C-2, the lining material M is penetrated by moving the tube body 10 in the front-rear direction. However, the lining material M is not limited to this, and the air pressurized by the air delivery device 20 is replaced with the tube body 10. It is possible to penetrate through 10 insertion side end portions 10a.

  Moreover, in the said embodiment, although the inside of the pipe line P was lined using the tube body 10 as mentioned above, it replaces with this, for example, as shown in FIG. 5, the tube which attached the surrounding wall part to the insertion side edge part It is also possible to line the inside of the pipe line P using the body.

  The example shown in FIG. 5 will be described. FIG. 5A shows a case in which a funnel-shaped peripheral wall 120 is attached to the insertion side end 110a of the tube body 110, and FIG. A cylindrical peripheral wall portion 220 formed so that the outer diameter shape is substantially the same as the outer diameter shape of the intermediate portion 210b of the tube body 210 is attached to the insertion side end portion 210a formed to be tapered. It is. In addition, the said surrounding wall part 120 and the surrounding wall part 220 correspond to the "peripheral wall part" as described in a claim.

  The peripheral wall part 120 and the peripheral wall part 220 are both arranged at intervals in the circumferential direction from the insertion side end part, and are configured to be detachable from the tube body. Of course, the peripheral wall portion can be configured to be non-detachable from the tube body.

  Thus, according to the present embodiment, even if the lining material M is mounted so as to cover the outer periphery of the insertion side end portion, the lining material M is covered by the peripheral wall portion. During movement, it is possible to prevent a situation in which the lining material M is reduced by adhering to the inner surface of the pipe P or the like. As a result, in the present embodiment, the lining material M can be swelled well at a desired position, and as a result, the inside of the pipe line P can be more reliably lined.

  In each of the above embodiments, an example in which one lining layer of the lining material M is formed in the pipe P by performing the insertion process B and the lining process C has been described. It is also possible to stack a plurality of lining layers by rotating.

  In addition, when laminating a plurality of lining layers, for example, a tube body 310 as shown in FIGS. 6 and 7 can be used instead of the tube body described in the above embodiments.

  Here, such a tube body will be described with reference to FIG. 1, FIG. 6, and FIG. The embodiment described below and each of the above-described embodiments are different only in the configuration of the tube body, and the other configurations are the same. Therefore, unless necessary, the same reference numerals are given and the description thereof is omitted. To do.

  As illustrated in FIG. 6, the tube body 310 according to the present embodiment includes a first tube body 320 and a second tube body 330 disposed inside the first tube body. The first tube body 320 and the second tube body 330 are both configured using the same members as in the above-described embodiment, and these are integrally formed. The first tube body 320 and the second tube body 330 correspond to the “first tube body” and the “second tube body” recited in the claims, respectively.

  The first tube body 320 has a first discharge port 320a as one end portion through which the lining material M can be discharged, and a first inflow port 320b as the other end portion through which air can flow. Similarly to the first tube body 320, the second tube body 330 has a second discharge port 330a as one end portion through which the lining material M can be discharged and a second discharge port 330a as the other end portion through which air can flow. And an inflow port 330b. The first outlet 320a, the first inlet 320b, the second outlet 330a, and the second inlet 330b are respectively referred to as “first outlet” and “ It corresponds to a “first inflow portion”, a “second discharge portion”, and a “second inflow portion”.

The opening end of the second discharge port 330a is disposed closer to the first inflow port 320b than the opening end of the first discharge port 320a so as to be located inside the first tube body 320. Further, the second inflow port 330b is fixed in a penetrating manner while maintaining airtightness from the other end side of the first tube body 320.
In the tube body 310 configured as described above, when air flows into the first inlet 320b, air flows out from the first outlet 320a, while when air flows into the second inlet 330b, the second outlet Air flows out from 330a. In the present embodiment, the first inflow port 320b and the second inflow port 330b are connected to the air delivery device 20 as in the above embodiment.

  Next, an in-pipe lining method using such a tube body 310 will be described with reference to FIGS. 1, 6, and 7.

As shown in FIGS. 1, 6, and 7, in this embodiment, after the lining position specifying step A, the insertion step B is performed as in the above embodiments.
In the insertion process B, as in the above-described embodiment, the operation starts by attaching the lining material M to the tube body 310. Specifically, in the present embodiment, after the lining material M is mounted on the second discharge port 330a, an operation of mounting the lining material M on the first discharge port 320a is performed so as to cover the second discharge port 330a.
Thereafter, in the insertion step B, the tube body 310 is inserted from the opening Pо (see FIG. 2) of the conduit P, and the first discharge port 320a is positioned in front of the hole H specified in the lining position specifying step A. The work is done until it is placed.

Next, in the present embodiment, an operation of causing the air pressurized by the air delivery device 20 to flow in from the first inflow port 320b (hereinafter, this operation is referred to as “first adhesion process”) is performed. The first attaching step corresponds to the “first attaching step” described in the claims.
When air flows into the first inlet 320b, the lining material M attached to the first outlet 320a is gradually discharged as if a balloon is inflated from the first outlet 320a, and the pipe line The hole H formed in P is completely closed from the inner surface side of the pipe line P by the thinned lining material M (see FIG. 7A).

  The first adhering step C-1-1 ends when a predetermined amount of air flows from the first inflow port 320b, and then the next step, the penetrating step C-2, is performed.

  In the penetrating step C-2, the lining material expanded in the first attaching step is ruptured by blowing air from the first discharge port 320a to perform the penetrating operation (see FIG. 7B). In such a penetrating step C-2, the lining material expanded in the first attaching step can be penetrated by moving the tube body 310 back and forth (see FIG. 4).

Thereafter, in the present embodiment, as in the first adhesion step C-1-1, the operation of causing the air pressurized by the air delivery device 20 to flow from the second inflow port 330b (hereinafter referred to as “first operation”). 2) ". The second attaching step corresponds to the “second attaching step” recited in the claims.

When air is introduced into the second inlet port 330b, the lining material M attached to the second outlet port 330a is gradually discharged from the second outlet port 330a as if a balloon is inflated. By performing the adhesion process of (2), it will adhere to the lining material M already adhered to the inner surface of the pipe P (see FIG. 7C).
The second attaching step is terminated when the lining material M swells in the same manner as the lining material M swelled in the first attaching step C-1-1, and then the next step, the penetration step C-2, is performed. It is supposed to be.

In the penetration step C-2, the penetration of the lining material expanded in the second adhesion step is performed in the same manner as the penetration step C-2 performed after the first adhesion step (see FIG. 7D). . Specifically, in this penetration step C-2, the lining material expanded in the second adhesion step is ruptured by allowing air to blow out from the first discharge port 320a and / or the second discharge port 330a, and penetrated. Work is performed (see FIG. 7D). In such a penetrating step C-2, the lining material expanded in the first attaching step can be penetrated by moving the tube body 310 back and forth (see FIG. 4).
In this embodiment, the partial lining (in-pipe lining) in the pipe line P is completed by performing such a penetration process C-2.

  Thus, according to this embodiment, since the lining layer by which it laminated twice can be formed only by inserting the tube body 310 in the pipe line P once, an operation | work is simplified. It is possible.

In this embodiment, the first adhesion process, the penetration process C-2, the second adhesion process, and the penetration process C-2 are performed in this order. However, the first adhesion process and the second adhesion process are performed. It is also possible to omit the penetration step C-2 performed between the two.
Further, in the present embodiment, the second tube body 330 is arranged inside the first tube body 320 in order to form a double laminated lining layer. However, in order to form a further lining layer, For example, a third tube body can be further arranged inside the second tube body 330 (in this case, three lining layers).
Further, in the present embodiment, the second inlet 330b of the second tube body 330 is connected to the first tube body 320 so as not to move, but is connected so as to be movable in the longitudinal direction by interposing an O-ring or the like. It is also possible to do. In such a case, since the lining material M can be penetrated by moving the second tube body 330 relative to the first tube body 320 in the penetration step C-2, the work can be simplified. It becomes possible to contribute to.
Further, it is possible to attach a peripheral wall portion as shown in FIG. 5 to the first outlet 320a of the first tube body 320 and / or the second outlet 330a of the second tube body 330 used in the present embodiment. It is.

  In each of the above embodiments, the work of inflating or penetrating the lining material M is performed using a pressurizing device such as the air delivery device 20. Nitrogen gas) or by blowing air from a person's mouth. Furthermore, the fluid for inflating or penetrating the lining material M is not limited to air, but other gases and liquids (fluids circulated after completion of the lining operation in the pipe (in this embodiment, city gas or LP Gas)).

  In each of the above embodiments, the lining material M is attached to the tube body before the tube body is inserted into the pipe line P. However, the present invention is not limited to this, and the lining material M is placed at a predetermined position in the pipe line P. It is also possible to carry out by inserting a tube body into the lining material M after pre-filling and arranging.

  Further, in each of the above embodiments, a flexible pipe used for a gas pipe is shown as a pipe line to which the present invention is applied. However, other steel pipes and other pipe materials such as iron pipes and stainless pipes (for example, polyvinyl chloride pipes and resins) In addition to gas pipes, pipes through which other gases circulate (for example, so-called air pipes), pipes through which liquids such as water and oil circulate, and electric wires, etc. It is also possible to apply to a pipeline that is wired.

  Further, in each of the embodiments described above, the case where it is applied to a pipe line having a hole due to corrosion due to nailing or aging deterioration is described, but the present invention is a case where a thread portion is loosened in a pipe line to be screwed. Of course, the present invention can be applied to a mechanical joint, for example, in a case where a part of the inner surface is reinforced (rehabilitated) in a pipe line having no hole.

  As mentioned above, although embodiment which applied the invention made by this inventor was described, this invention is not limited by the description and drawing which make a part of indication of this invention by this embodiment. That is, it is added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Line | pipe lining apparatus 10,110,210,310 Tube body 10a, 110a, 210a Insertion side edge part 210b Intermediate | middle part 120,220 Peripheral wall part 320 1st tube body 320a 1st discharge port 320b 1st inflow port 330 1st 2nd tube body 330a 2nd discharge port 330b 2nd inflow port 20 Air delivery apparatus A Lining position specific process B Insertion process C Lining process C-1 Adhesion process C-1-1 1st adhesion process C-1-2 1st 2 Adhesion process C-2 Penetration process P Pipe P Opening H Hole M Lining material

Claims (9)

An insertion step of inserting the tube body for discharging the lining material into the conduit;
After performing the insertion step, the lining step of lining the inner surface of the conduit by discharging the lining material from the tube body,
A pipeline lining method comprising:
The lining process includes
An attachment step of attaching the lining material to the inner surface of the conduit in a state in which a fluid is poured into the tube body so as to be swelled in a balloon shape from the tube body;
A penetrating step of penetrating the lining material inflated in a balloon shape along the insertion direction of the tube body,
In-pipe lining method characterized by the above. The penetrating step includes a step of penetrating the lining material by causing the fluid to flow out of the tube body.
The in-pipe lining method according to claim 1. The penetrating step includes a step of penetrating the lining material by moving the tube body along the insertion direction.
The in-pipe lining method according to claim 1. The tube body has a peripheral wall portion arranged to be separated from the discharge port so as to cover the outer periphery of the discharge port for discharging the lining material.
The in-pipe lining method according to any one of claims 1 to 3, wherein: The tube body is
A first tube body for discharging the lining material;
A second tube body provided inside the first tube body for discharging the lining material;
The attaching step includes
A first attachment step of causing the fluid to flow into the first tube body, thereby causing the lining material to bulge out from the first tube body into a balloon shape and adhere to the inner surface of the conduit;
After performing the first attachment step, the fluid is poured into the second tube body, so that the lining material is bulged from the second tube body into a balloon shape, and the first attachment step performs the above-described operation. A second attachment step of attaching onto the lining material attached to the inner surface of the conduit,
The in-pipe lining method according to any one of claims 1 to 4, characterized in that: An in-pipe lining device for lining the inner surface of a pipe using a lining material,
It has a discharge port through which the lining material can be discharged, and includes a tube body inserted into the pipe line
The lining material is made of a material that can swell in a balloon shape from the discharge port when a fluid is poured into the tube body in a state of being arranged at the discharge port.
An in-pipe lining device. A fluid delivery device capable of pouring the fluid into the tube body;
The lining material is composed of a member that bursts when a predetermined amount of the fluid is poured into the tube body by the fluid delivery device in a balloon-like state.
The in-pipe lining device according to claim 6. The tube body has a peripheral wall portion arranged to be separated from the discharge port so as to cover the outer periphery of the discharge port.
The in-pipe lining device according to claim 6 or 7, wherein The tube body is
A first tube body having a first inflow portion into which the fluid is introduced, and a first discharge portion for discharging the lining material;
A second tube body disposed inside the first tube body and having a second inflow portion into which the fluid flows and a second discharge portion for discharging the lining material;
The in-pipe lining device according to any one of claims 6 to 8, wherein