JP6964419B2 - In-pipe lining method and in-pipe lining equipment - Google Patents

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 the inner surface of a pipeline.

In recent years, in pipelines (for example, flexible pipes) that circulate fluids (for example, city gas and LP gas), part of the pipe wall is damaged (for example, pinholes) due to factors such as nailing and aging deterioration due to interior work. If so, a technique for partially repairing the inside of the pipeline including the damaged part has been proposed.

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

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

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

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

In the construction method described in Patent Document 2, a sheet-shaped lining material is wound around an elastic body connected to a hose, and then air is sent to a hose inserted in a pipeline to expand the diameter of the elastic body. , The lining material is crimped to the inner surface of the pipeline including the damaged part.

According to such a construction method, a part of the inside of the pipeline is lined with a sheet-shaped lining material, so that the inside of the pipeline including the damaged portion is partially repaired as in the technique described in Patent Document 1. It is possible.

Patent No. 273022 Patent No. 5778455

By the way, in the construction method described in Patent Document 1, the resin is fluidized (moved) by directly blowing air onto the liquid resin, whereby the damaged portion is closed and the lining in the pipeline is performed. ing.

In general, when air is blown vigorously on 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 resin mixed with air bubbles closes the damaged portion and linings in the pipeline. In such a case, depending on the amount of air bubbles mixed in the resin, the damaged part cannot be sufficiently closed (the air bubbles become a passage penetrating the pipe wall), and the pipe line is not actually repaired. It is easy to get the same result as.

In this regard, in the construction method described in Patent Document 2, since the member for repairing the damaged portion is a sheet-shaped lining material, the problem due to the mixing of air bubbles as in the technique described in Patent Document 1 does not occur. ..

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 pipeline, for example, the damaged portion exists at the tip of the bent portion of the pipeline. In this case, depending on the length of the elastic body and the degree of bending of the pipeline, the elastic body may be caught in the pipeline and the lining material may not be able to be moved to the damaged portion.

Further, when there is a damaged part in the bent portion of the pipeline, even if the lining material can be moved to the damaged portion, the lining material cannot be brought into close contact with the inner surface of the pipeline without a gap. There is a high possibility, and in such a case, there is a problem that the damaged part cannot be sufficiently closed.

The present invention has been made to eliminate the above-mentioned inconvenience, and an object of the present invention is an in-pipe line lining method capable of reliably lining a part of the inside of a pipe regardless of the shape of the inner surface of the pipe. And to provide an in-pipe lining device.

According to the in-pipe lining method according to the present invention, the above problem is an insertion step of inserting a tube body in which a lining material is attached to an insertion side end and a fluid delivery means is attached to the other end into the pipeline. A method of lining in a pipeline, comprising a lining step of expanding the lining material and lining the inner surface of the pipeline into which the tube body is inserted after performing the insertion step. The steps include an attachment step of attaching the lining material to the periphery of the tube body on the inner surface of the pipe line in a state where the lining material is expanded in a balloon shape from the tube body by pouring a fluid into the tube body, and a balloon shape. It is solved by including a penetrating step of penetrating the lining material inflated along the insertion direction of the tube body.

Further, the above-mentioned problem is, according to the in-pipe line lining device according to the present invention, an in-pipe line lining device for lining the inner surface of a line using a lining material, and the lining material is attached to an insertion side end portion. The tube body is provided with a tube body to be inserted into the pipeline in a state of being in the state of being in the state of being a first inflow portion into which the fluid flows in, and a first inflow portion for discharging the fluid so as to bulge the lining material in a balloon shape. A first tube body having a discharge portion, a second inflow portion arranged inside the first tube body and into which the fluid flows in, and a second inflow portion for discharging the fluid so as to bulge the lining material in a balloon shape. It is also solved by including a second tube body having two discharge portions.

In the above configuration, the blowing fluid to the tube body that is inserted into duct, the lining material is adapted to be out Rise in Kuba Rune form each of or balloon bulges from the tube body.

Here, the lining material is made of a material having "extensibleness" capable of inflating in a balloon shape, preferably a material having "adhesiveness" capable of adhering to the inner surface of a pipeline. For example, a semi-solid material obtained by dissolving vinyl acetate resin (thermoplastic resin) in a solvent such as ethanol or ethyl acetate can be used. When the present invention is applied to a pipeline that can be bent and deformed (for example, a flexible pipe), in addition to having the above-mentioned "extensibleness" and "adhesiveness", even if it is cured. It is preferable to use a flexible "semi-curable" material, for example, a semi-solid material as described above.

As described above, in the above configuration, since the above-mentioned material is used as the lining material, for example, even if the tube body to which the lining material is attached in advance is moved in the pipeline, the lining material is the cause. , There is almost no problem that the tube body cannot pass through the bent part of the pipeline.

Therefore, in the above configuration, the tube body can be moved to a desired position in the pipeline regardless of the shape of the inner surface of the pipeline.

Then, in the above configuration, when the lining material is inflated at a desired position in the pipeline, the thin-film lining material is configured to stick to the pipeline as if it were pressed against the pipeline. Therefore, for example, even in a pipeline having a relatively complicated inner surface shape (for example, a so-called “flexible pipe”), the lining material can be brought into close contact with the pipe along the inner surface shape of the pipeline. Even if there is a defect such as a pinhole in such a pipeline, the thin film lining material can be brought into close contact with the inner surface of the pipeline while filling (repairing) the defect. Of course.

After that, in the above configuration, the balloon-shaped lining material adhering to the inner surface of the pipeline is simply penetrated along the extending direction of the pipeline as if a balloon is broken (penetration step), and the portion inside the pipeline. It is possible to complete a typical lining.

As described above, in the above configuration, the desired portion in the pipeline can be reliably lined regardless of the shape of the inner surface of the pipeline.

In the in-pipe lining method, the penetrating step is at least a step of penetrating the lining material by causing the fluid to flow out from the tube body, and moving the tube body along the insertion direction. Therefore, it is preferable to include any one of the steps of penetrating the lining material.

Further, in the in-pipe lining method, it is preferable that the tube body has a peripheral wall portion arranged apart from the discharge port so as to cover the outer periphery of the discharge port for discharging the fluid to the lining material. ..

Further, in the in-pipe lining method, the tube body is provided in a first tube body for discharging a fluid to the lining material and a second tube body provided inside the first tube body to discharge the fluid to the lining material. It has a tube body, and in the attachment step, the fluid is poured into the first tube body to cause the lining material to bulge from the first tube body in a balloon shape and adhere to the inner surface of the pipeline. After performing the first attachment step and the first attachment step, the fluid is poured into the second tube body to cause the lining material to bulge from the second tube body in a balloon shape. It is preferable to include a second attachment step of attaching to the lining material attached to the inner surface of the pipeline by the first attachment step.

On the other hand, the in-pipe line lining device includes a fluid delivery device capable of flowing the fluid into the tube body, and the lining material is inflated like a balloon into the tube body by the fluid delivery device. It is preferably composed of a member that bursts when a predetermined amount of the fluid is poured.

Further, in the in-pipe line lining device, it is preferable that the tube body has a peripheral wall portion arranged apart from the discharge port so as to cover the outer periphery of the discharge port.

As described above, according to the in-pipe line lining method and the in-line lining device according to the present invention, a desired portion in the line can be reliably determined regardless of the shape of the inner surface of the line, even though the structure is simple. Can be lined.

It is a flow chart which shows an example of the lining method in a pipeline which concerns on this embodiment. It is sectional drawing for demonstrating an example of the insertion process of FIG. FIG. 1 is a cross-sectional view for explaining an example of the bonding process of FIG. 1, in which FIG. 1A shows a state in which the lining material is inflated, and FIG. Is. It is a cross-sectional view for demonstrating an example of the penetration process of FIG. , (C) is a diagram showing a state in which the tube body is pulled out. It is sectional drawing which shows the modification of the discharge port of a tube body. It is sectional drawing which shows the modification of the tube body. 6 is a cross-sectional view for explaining an example of the bonding step using the tube body , in which FIG. 6A is a diagram showing a state in which the first bonding step is performed, and FIG. 6B is a first bonding step. The figure which shows the state immediately after rupturing the lining material which was inflated in the above, (c) is the figure which shows the state which performed the 2nd attachment process, (d) is the figure which ruptured the lining material which was inflated in the 2nd attachment 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 flow chart showing an example of a lining method according to the present embodiment, FIG. 2 is a cross-sectional view for explaining an example of an insertion process of FIG. 1, and FIG. 3 is a cross-sectional view for explaining an example of an attachment process of FIG. A cross-sectional view and FIG. 4 is a cross-sectional view showing an example of the penetration process of FIG.

As shown in FIG. 1, the in-pipeline 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 inserting step B. And have. The insertion step B and the lining step C correspond to the "insertion step" and the "lining step" 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, work is performed to specify a portion to be lined in the pipeline P, that is, a portion to be subjected to the lining step C. The pipeline P corresponds to the "pipeline" described in the claims.

As shown in FIG. 2, the pipeline 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 its shape by hand, and is a detached house or the like. It is laid as a gas pipe (pipe for city gas or LP gas) in the wall or under the floor of the building. In this embodiment, as the pipeline P, a pipe P provided with a covering portion on the outer periphery of the flexible pipe main body (original pipe) is illustrated.

In the present embodiment, a part of the pipe wall of the pipe P has a hole H due to nailing due to interior work or corrosion due to aged deterioration, and a part of the inside of the pipe P is lined to form a damaged part. It is possible to repair the hole H as a. Therefore, in the lining position specifying step A according to the present embodiment, the work of specifying the position of the hole H in the pipeline P is performed.

As a method for identifying the position of such a hole H, a known method performed when a leak portion is present in the pipeline P as a result of a leak test (airtightness test), for example, a fiberscope, a stopper, and a leak identification cure. It is possible to adopt a method of inserting a detection device such as a tool into the pipeline P to check the leaked part.
The lining position specifying step A is completed by specifying the position of the hole H (for example, the distance from the opening Pо such as the pipe end of the pipeline P to the hole H), and then the insertion step B, which is the next step. Is done.

Next, the insertion step 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 line lining device 1 described later was inserted through the opening Pо of the line P, and the tube body 10 was specified in the lining position specifying step A. Work to move it to the lining position.
Here, before giving a specific explanation about the insertion step B, the in-pipe line lining device 1 used in the insertion step B and the lining step C which is the next step will be described. The in-pipe line lining device 1 corresponds to the “in-pipe line lining device” described in the claims.

As shown in FIG. 2, the in-pipe line 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 tubular member having flexibility capable of passing through a bent portion of a conduit P and the like and pressure resistance capable of allowing pressurized air to flow, and is known. It can be configured by using the pressure resistant hose of. The above air corresponds to the "fluid" described in the claims.

In the present embodiment, the insertion step B and the lining step C are performed by using the in-pipe line lining device 1 configured as described above.

In the insertion step B performed by using the in-pipe line lining device 1, the lining material M is inserted into the insertion side end portion 10a of the tube body 10 before the tube body 10 is inserted into the opening Pо of the pipe line P. It starts with the work of mounting. The insertion side end portion 10a and the lining material M correspond to the "discharge portion " and the "lining material" described in the claims, respectively.

The lining material M has a property that it can be inflated into a balloon shape in the lining step C described later and can be adhered to the inner surface of the pipeline P when the lining material M is inflated into a balloon shape, that is, “extensible”. And formed using materials that have "adhesiveness". In the present embodiment, as the lining material M, a semi-solid material obtained by dissolving vinyl acetate resin in a solvent such as ethanol or ethyl acetate is adopted.
It should be noted that such a lining material M has the above-mentioned "extensibleness" and "adhesiveness", and also has "semi-curing property" which is flexible even if it is cured after being attached to the pipe line 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 does not easily come off from the inner surface of the pipeline P. .. In the present embodiment, the lining material M is a vinyl acetate resin dissolved in alcohols such as ethyl acetate, but other materials as long as they have "extensibleness" and "adhesiveness". Needless to say, may be used.

Explaining the attachment of the lining material M to the tube body 10, in the present embodiment, a predetermined amount of the lining material M is packed in the tube body 10 and the open end 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 through the opening Pо of the pipeline P, and the insertion side end portion 10a is positioned in front of the hole H specified in the lining position specifying step A. Perform the work of sending until it is placed.
The insertion step B is completed by feeding the tube body 10 to a predetermined position in the pipeline P, and then the lining step C, which is the next step, is performed.

Next, the lining step C will be described with reference to FIGS. 1, 3 and 4.
As shown in FIG. 1, the lining step C includes a bonding step C-1 performed after the insertion step B and a penetrating step C-2 performed after the bonding step C-1. The adhesion step C-1 and the penetration step C-2 correspond to the "adhesion step" and the "penetration step" described in the claims, respectively.

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

When pressurized air is sent into the tube body 10, the lining material M attached to the insertion side end 10a of the tube body 10 is a balloon from the insertion side end 10a as shown in FIG. 3A. so we are bulging balloon shape gradually as is or go inflated.

After that, the lining material M is thinned as it expands like a balloon, and when a predetermined amount of air is sent to the tube body 10, it has a bellows shape as shown in FIG. 3 (b). It will be adhered evenly (without gaps) along the inner surface shape of the pipeline P.
At this time, the hole H formed in the pipeline P is completely closed from the inner surface side of the pipeline P by the thinned lining material M.
In the present embodiment, when the lining material M is in such a state, the air delivery from the air delivery device 20 is stopped, and the adhesion step C-1 is completed.

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

As shown in FIG. 4, in the penetration step C-2, the lining material M inflated in a balloon shape is penetrated along the insertion direction of the tube body 10.

In the penetration step C-2 according to the present embodiment, as shown in FIGS. 4A to 4C, the tube body 10 is moved back and forth several times along the insertion direction into the pipeline P. Then, the balloon-shaped lining material M is pierced.

When the lining material M is penetrated in this way, a lining layer made of the thinned lining material M is formed on a part of the inner surface of the pipeline P in a state of closing the holes H. In the present embodiment, by performing such a penetration step C-2, the partial lining in the pipeline P is completed.

As described above, in the present embodiment, when air is blown into the tube body 10 in which the lining material M is attached to the tube body 10 (insertion side end portion 10a), the lining material M inflates the balloon from the insertion side end portion 10a. It is configured to bulge as if.

Therefore, when the lining material M is inflated at the position where the hole H in the pipe line P is formed, the thin film-like lining material M sticks to the inner surface of the pipe line P as if it is pressed against the inner surface of the pipe line P. Even if the bellows-shaped pipe (flexible pipe) P has a hole H, the lining material M can be brought into close contact with the lining material M along the inner surface shape of the pipe 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 lining material M is attached to the insertion side end portion 10a of the tube body 10 and moved in the pipeline P. , The problem that the movement of the tube body 10 is restricted due to the lining material M hardly occurs.

As described above, according to the present embodiment, even if the inner surface shape of the pipe line P is a relatively complicated shape (bellows shape in the present embodiment), the tube body 10 is placed at a desired position in the pipe line P. It is possible to line the inner surface of the pipeline 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 a balloon shape in the adhesion step C-1, which is the previous step thereof, is penetrated by moving the tube body 10 in the front-rear direction. ing.

That is, in the present embodiment, since the lining material M is penetrated by using the tube body 10 itself in which the lining material M is bulged, there is an advantage that the work can be performed extremely easily.

In the penetrating step C-2, the lining material M is penetrated by moving the tube body 10 in the front-rear direction, but the present invention is not limited to this, and the air pressurized by the air delivery device 20 is passed through the tube body. It can also be penetrated by ejecting from the insertion side end portion 10a of 10.

Further, in the above embodiment, the inside of the pipe line P is lined using the tube body 10 as described above, but instead of this, for example, as shown in FIG. 5, a tube having a peripheral wall portion attached to the insertion side end portion. It is also possible to line the inside of the pipeline P using the body.

Explaining the example shown in FIG. 5, FIG. 5 (a) shows a funnel-shaped peripheral wall portion 120 attached to the insertion side end portion 110a of the tube body 110, and FIG. 5 (b) shows the tube body 110 toward the tip. A tubular 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 so as to taper. Is. The peripheral wall portion 120 and the peripheral wall portion 220 correspond to the "peripheral wall portion" described in the claims.

Both the peripheral wall portion 120 and the peripheral wall portion 220 are arranged at intervals in the circumferential direction from the insertion side end portion, and are configured to be detachably attached to the tube body. Of course, the peripheral wall portion can be configured to be non-detachable with respect to the tube body.

As described above, according to the present embodiment, even if the lining material M is attached so as to cover the outer periphery of the insertion side end portion, since the lining material M is covered by the peripheral wall portion, the tube body in the pipeline P is covered. It is possible to prevent a situation in which the lining material M adheres to the inner surface of the pipeline P and is reduced during the movement. As a result, in the present embodiment, the lining material M can be swelled satisfactorily at a desired position, and as a result, the inside of the pipeline P can be lined more reliably.

In each of the above embodiments, an example is shown in which one lining layer made of the lining material M is formed in the pipeline P by performing the insertion step B and the lining step C, but a plurality of such steps are performed. It is also possible to stack a plurality of lining layers by repeating the process.

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

Here, such a tube body will be described with reference to FIGS. 1, 6 and 7. It should be noted that the embodiments described below differ from each of the above embodiments 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. do.

As shown in FIG. 6, the tube body 310 according to the present embodiment has a first tube body 320 and a second tube body 330 arranged inside the first tube body. Both the first tube body 320 and the second tube body 330 are configured by using the same members as those in the above 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" described in the claims, respectively.

The first tube body 320 has a first discharge port 320a as one end portion capable of discharging air to the lining material M, and a first inflow port 320b as the other end portion capable of allowing air to flow in. Further, the second tube body 330, like the first tube body 320, has a second discharge port 330a as one end portion capable of discharging air to the lining material M and an other end portion capable of inflowing air. It has a second inflow port 330b. The first discharge port 320a, the first inflow port 320b, the second discharge port 330a, and the second inflow port 330b are described in the claims as "the first discharge part" and "the first discharge part", respectively. It corresponds to the "first inflow section", the "second discharge section", and the "second inflow section".

The opening end of the second discharge port 330a is arranged 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 pierced and fixed from the other end side of the first tube body 320 while maintaining airtightness.
In the tube body 310 configured in this way, when air flows into the first inflow port 320b, air flows out from the first discharge port 320a, while when air flows into the second inflow port 330b, the second discharge port Air is being discharged 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-pipeline 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, the present embodiment is configured to perform the insertion step B after the lining position specifying step A in the same manner as in each of the above embodiments.
The insertion step B begins with the work of attaching the lining material M to the tube body 310 in the same manner as in the above embodiment. Specifically, in the present embodiment, after the lining material M is attached to the second discharge port 330a, the lining material M is attached to the first discharge port 320a so as to cover the second discharge port 330a.
After that, in the insertion step B, the tube body 310 is inserted through the opening Pо (see FIG. 2) of the pipeline P, and the first discharge port 320a is positioned in front of the hole H specified in the lining position specifying step A. Perform the work of sending until it is placed.

Next, in the present embodiment, the work of inflowing the air pressurized by the air delivery device 20 from the first inflow port 320b (hereinafter, this work is referred to as a "first adhesion step") is performed. The first attachment step corresponds to the "first attachment step" described in the claims.
As you allowed to flow into the air in the first inlet 320b, lining material M, which is attached to the first outlet 320a is gradually swelled as if inflating the balloon with air from the first outlet 320a The hole H formed in the pipeline P is completely closed from the inner surface side of the pipeline P by the thinned lining material M (see FIG. 7A).

The first adhesion step C-1-1 ends when a predetermined amount of air has flowed in from the first inflow port 320b, and then the next step, the penetration step C-2, is performed.

In the penetrating step C-2, the lining material inflated in the first bonding step is burst by ejecting air from the first discharge port 320a to penetrate the lining material (see FIG. 7B). In such a penetration step C-2, the lining material inflated in the first attachment step can be penetrated by moving the tube body 310 back and forth (see FIG. 4).

After that, in the present embodiment, similarly to the first attachment step C-1-1, the work of allowing the air pressurized by the air delivery device 20 to flow in from the second inflow port 330b (hereinafter, this work is referred to as "the first". 2) is performed. The second attachment step corresponds to the "second attachment step" described in the claims.

As you allowed to flow into the air in the second inlet 330b, lining material M, which is attached to the second discharge port 330a is gradually swelled as if inflating the balloon with air from the second discharge port 330a By performing the first attachment step, the lining material M already attached to the inner surface of the pipeline P will be attached (see FIG. 7C).
The second adhesion step ends when the lining material M is inflated in the same manner as the lining material M inflated in the first attachment step C-1-1, and then the next step, the penetration step C-2, is performed. It is designed to be used.

In this penetrating step C-2, the work of penetrating the lining material inflated in the second bonding step is performed in the same manner as in the penetrating step C-2 performed after the first bonding step (see FIG. 7 (d)). .. Specifically, in this penetration step C-2, the lining material inflated in the second attachment step is burst by ejecting air from the first discharge port 320a and / or the second discharge port 330a to penetrate the lining material. Work is performed (see FIG. 7 (d)). In such a penetration step C-2, the lining material inflated in the first attachment step can be penetrated by moving the tube body 310 back and forth (see FIG. 4).
In the present embodiment, by performing such a penetration step C-2, the partial lining in the pipeline P (intrapipeline lining) is completed.

As described above, according to the present embodiment, it is possible to form a doubly laminated lining layer only by inserting the tube body 310 into the pipe line P once, so that the work can be simplified. It is possible.

In the present embodiment, the work was performed in the order of the first adhesion step, the penetration step C-2, the second adhesion step, and the penetration step C-2, but the first adhesion step and the second adhesion step It is also possible to omit the penetration step C-2 performed between and.
Further, in the present embodiment, the second tube body 330 is arranged inside the first tube body 320 in order to form the double-laminated lining layer, but in order to form a further lining layer, the second tube body 330 is arranged. For example, it is also possible to further arrange a third tube body inside the second tube body 330 (in this case, the lining layer is triple).
Further, in the present embodiment, the second inflow port 330b of the second tube body 330 is immovably connected to the first tube body 320, but is movably connected in the longitudinal direction by interposing an О ring or the like. It is also possible to do. In such a case, in the penetration step C-2, the lining material M can be penetrated by moving the second tube body 330 relative to the first tube body 320, so that the work can be simplified. It becomes possible to contribute to.
Further, it is also possible to attach a peripheral wall portion as shown in FIG. 5 to the first discharge port 320a of the first tube body 320 and / or the second discharge port 330a of the second tube body 330 used in the present embodiment. Is.

In each of the above embodiments, the work of inflating or penetrating the lining material M was performed using a pressurizing device such as the air delivery device 20, but a cylinder to which gas was previously pressurized (for example, Nitrogen gas) may be used, or air may be blown from a person's mouth. Further, the fluid for inflating or penetrating the lining material M is not limited to air, but other gases and liquids (fluids to be circulated after the completion of the lining work in the pipeline (in this embodiment, city gas or LP). Gas) may be included).

Further, 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, but the present invention is not limited to this, and the lining material M is attached to a predetermined position in the pipe line P. It is also possible to perform this by inserting a tube body into the lining material M after filling and arranging the lining material M in advance.

Further, in each of the above embodiments, the flexible pipe used for the gas pipe is shown as the pipe line to which the present invention is applied, but other steel pipes such as iron pipes and stainless steel pipes and other pipe materials (for example, vinyl chloride pipes and resins) are shown. It may be applied to pipes), and in addition to gas pipes, pipes through which other gases flow (for example, so-called air pipes), pipes through which liquids such as water and oil flow, electric wires, etc. It can also be applied to the pipeline to be wired.

Further, in each of the above embodiments, the case where the pipe is applied to a pipe having a hole due to nailing or corrosion due to aged deterioration has been described. It can be applied not only to mechanical joints, but also to, for example, to reinforce (rehabilitate) a part of the inner surface of a pipeline without holes.

Although the embodiment to which the invention made by the present inventor is applied has been described above, the present invention is not limited by the essay and the drawings which form a part of the disclosure of the present invention according to this embodiment. That is, it should be added that all other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are of course included in the scope of the present invention.

1 In-pipe lining device 10, 110, 210, 310 Tube body 10a, 110a, 210a Insertion side end 210b Intermediate 120, 220 Peripheral wall 320 First tube 320a First outlet 320b First inflow port 330 2 Tube body 330a 2nd discharge port 330b 2nd inflow port 20 Air delivery device A Lining position specifying step B Insertion step C Lining step C-1 Adhesion step C-1-1 First attachment step C-1-2 First Adhesion step C-2 Penetration step P Pipeline Pо Opening H Hole M Lining material

Claims (5)

An insertion process in which a lining material is attached to the end on the insertion side and a tube body to which a fluid delivery means is attached to the other end is inserted into the pipeline.
After performing the insertion step, the lining material is expanded to line the inner surface of the pipe line into which the tube body is inserted.
It is a lining method in the pipeline equipped with
The lining process is
A bonding step of attaching the lining material to the periphery of the tube body on the inner surface of the pipeline in a state where the lining material is inflated from the tube body in a balloon shape by pouring a fluid into the tube body.
It is seen including a passing-through process for passing along said liner bag inflated balloon shape in the insertion direction of the tube body, and
The penetrating step includes a step of penetrating the lining material by causing the fluid to flow out from the tube body.
A method of lining in a pipeline, which is characterized by the fact that. An insertion process in which a lining material is attached to the end on the insertion side and a tube body to which a fluid delivery means is attached to the other end is inserted into the pipeline.
After performing the insertion step, the lining material is expanded to line the inner surface of the pipe line into which the tube body is inserted.
It is a lining method in the pipeline equipped with
The lining process is
A bonding step of attaching the lining material to the periphery of the tube body on the inner surface of the pipeline in a state where the lining material is inflated from the tube body in a balloon shape by pouring a fluid into the tube body.
It is seen including a passing-through process for passing along said liner bag inflated balloon shape in the insertion direction of the tube body, and
The penetrating step includes a step of penetrating the lining material by moving the tube body along the insertion direction.
Duct lining how to characterized in that. The tube body has a peripheral wall portion arranged apart from the insertion side end portion so as to cover the outer periphery of the insertion side end portion.
The method for lining in a pipeline according to claim 1 or 2. The insertion process of inserting a tube body with a lining material at the end on the insertion side into the pipeline,
After performing the insertion step, the lining material is expanded to line the inner surface of the pipe line into which the tube body is inserted.
It is a lining method in the pipeline equipped with
The lining process is
A bonding step of attaching the lining material to the periphery of the tube body on the inner surface of the pipeline in a state where the lining material is inflated from the tube body in a balloon shape by pouring a fluid into the tube body.
A penetrating step of penetrating the lining material inflated in a balloon shape along the approaching direction of the tube body is included.
The tube body has a first tube body and a second tube body provided inside the first tube body.
The bonding step is
A first attachment step of causing the lining material to bulge from the first tube body in a balloon shape and adhere to the inner surface of the pipeline by pouring a fluid into the first tube body.
After performing the first attachment step, the lining material is bulged from the second tube body in a balloon shape by pouring a fluid into the second tube body, and the tube is formed by the first attachment step. A second attachment step of attaching to the lining material attached to the inner surface of the road is included.
A method of lining in a pipeline, which is characterized by the fact that. An in-pipe line lining device that lines the inner surface of a pipe using a lining material.
A tube body to be inserted into the pipeline with the lining material attached to the insertion side end is provided.
The tube body
A first tube body having a first inflow portion into which a liquid is inserted and a first discharge portion for discharging the fluid so as to bulge the lining material in a balloon shape.
A second tube body arranged inside the first tube body and having a second inflow portion into which the liquid flows in and a second discharge portion for discharging the fluid so as to bulge the lining material in a balloon shape. An in-pipeline lining device comprising,.

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