JPH08164560A - Branch pipe-lining material and branch pipe-lining method - Google Patents

Abstract

PURPOSE: To provide a branch pipe-lining material and a branch pipe-lining method wherein all works can be done from a main pipe and lining of a branch pipe can be done always correctly regardless of condition on the ground. CONSTITUTION: A branch pipe lining material 1 is constituted by forming a flange 3 at one end of a pipe-like resin absorbing material 2 which contains a curing resin and has a highly airtight film coated on its inside face and by attaching a peel-off end 6 to other end in a peelable way. The lining material 1 is guided into a main pipe 30 in a state that the flange 3 is folded back. In a state that the flange 3 of the branch pipe lining material 1 is adhered to a branch pipe opening peripheral edge of the main pipe 30, the branch pipe-lining material 1 is inserted inversely into a branch pipe 31 from the main pipe 30 onto the ground by liquid pressure. By keeping the branch pipe-lining material 1 in a state pressed to the inner peripheral face of the branch pipe 31, the curing resin impregnated into the branch pipe-lining material 1 is cured, and the peel-off end 6 is peeled off and removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch pipe lining material used for lining a branch pipe branched from a main pipe and a branch pipe lining method using the same.

[0002]

2. Description of the Related Art When a pipeline such as a sewer pipe buried in the ground is deteriorated, the pipeline is repaired by lining its inner peripheral surface without excavating the pipeline from the ground. The pipe lining method is known.

That is, in the above pipe lining method, a pipe lining material made by impregnating a curable resin into a flexible tubular resin absorbent material whose outer peripheral surface is covered with a film having high airtightness Inserting the pipe lining while inverting it, pressing the pipe lining material against the inner peripheral surface of the pipe, and heating the pipe lining material while maintaining that state to cure the curable resin impregnated therein. This is a method of lining the inner peripheral surface of the pipe.

By the way, the above method can be applied to a branch pipe branched from a main pipe. An example is shown in FIG.

That is, FIG. 8 is a cross-sectional view showing a conventional branch pipe lining method, in which a working robot 112 introduced into a main pipe 130 supports a set nozzle 115, and the set nozzle 115 has a reversing pressure. The bag 113 is attached, and the collar 103 formed at one end of the branch pipe lining material 101 provided inside the pressure bag 113 is folded back to the outside and set on the set nozzle 115.

Next, the work robot 112 is driven to move the set nozzle 115 upward, and the collar 103 of the branch pipe lining material 101 set on the set nozzle 115 is moved to the periphery of the branch pipe opening of the main pipe 130 as shown in the figure. When the compressed air is supplied into the pressure bag 113 through the air hose 124 by driving a compressor (not shown), the branch pipe lining material 101 receives the pressure of the compressed air and reverses the branch pipe. The inside of 131 is sequentially inserted from the main pipe 130 toward the ground (upward).

Then, as shown in the drawing, the branch pipe lining material 1
When the inversion insertion of 01 into the branch pipe 131 is completed over its entire length, the branch pipe lining material 101 is heated by an arbitrary method while the branch pipe lining material 101 is pressed against the inner peripheral surface of the branch pipe 130. By curing the thermosetting resin impregnated in the same, the branch pipe 131 is repaired by lining the inner peripheral surface of the cured branch pipe lining material 101.

When the curing of the branch pipe lining material 101 is completed, the inverted end portion of the branch pipe lining material 101 protruding to the portion 131a opening to the ground is cut off, and the working robot 112 together with the pressure bag 113 is connected to the main pipe 130. After that, a series of branch pipe lining work is completed.

[0009]

However, depending on the surrounding conditions where the above-ground stile 131a is installed, it may not always be possible to cut off the inversion end portion of the branch pipe lining material 101 protruding from the stub 131a. However, in such a case, there is a problem that the method cannot be applied to the branch pipe 131 as it is.

The present invention has been made in view of the above problems, and the object of the present invention is to perform all the work from the main pipe side, so that the branch pipes can be always lined reliably regardless of the situation on the ground. It is an object to provide a branch pipe lining material and a branch pipe lining construction method that can be performed if possible.

[0011]

In order to achieve the above object, the invention according to claim 1 is such that one end of a tubular resin absorbent material is obtained by impregnating a curable resin and coating an inner surface with a highly airtight film. The branch pipe lining material is characterized in that a collar is formed and a peeling end is attached to the other end in a peelable manner.

According to a second aspect of the present invention, in the first aspect of the present invention, the peeling end is formed into a tubular shape, one end thereof is closed, and the other end opening is fitted to an outer peripheral portion of one end of the resin absorbent material. It is characterized by being heat-welded to the resin absorbent through the film.

A third aspect of the invention is characterized in that, in the first aspect of the invention, a peeling tube is adhered to the outer periphery of the resin absorbent material in the vicinity of the flange.

According to a fourth aspect of the present invention, a tubular resin absorbent material which is impregnated with a curable resin and whose inner surface is coated with a highly airtight film has a flange formed at one end and a peeling end pulled at the other end. Introduce the branch pipe lining material that is detachably attached into the main pipe with its collar folded back,
With the brim of the branch pipe lining material in close contact with the peripheral edge of the branch pipe opening of the main pipe, the branch pipe lining material is reversely inserted into the branch pipe from the main pipe side toward the ground by fluid pressure to obtain the branch pipe lining material. While being pressed against the inner peripheral surface of the branch pipe, the curable resin impregnated in the branch pipe lining material is cured, and then the peeling end is peeled off to remove it.

According to a fifth aspect of the present invention, in the invention according to the fourth aspect, an open end of the pressure bag is attached to a set nozzle held by a working robot that is movably introduced into the main pipe, and the pressure bag is attached to the set nozzle. The branch pipe lining material was installed inside, the flange of the branch pipe lining material was exposed to the outside of the pressure bag, and this was set on the set nozzle, and the flange was brought into close contact with the peripheral edge of the branch pipe opening of the main pipe. In this state, a pressure fluid is supplied into the pressure bag to reversely insert the branch pipe lining material into the branch pipe.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the invention, the branch pipe lining material is impregnated with a thermosetting resin, and a pulling rope is provided at a peeling end of the branch pipe lining material. A hot water hose is attached, and the pulling rope and the hot water hose are pulled into the branch pipe lining material by reversal insertion of the branch pipe lining material into the branch pipe lining material, and the branch pipe lining material is impregnated with the hot water supplied by the hot water hose. The thermosetting resin is heated and cured, and after the thermosetting resin is cured, the peeling end is peeled off using the tow rope.

According to a seventh aspect of the present invention, in the invention according to the fourth aspect, the other end of the peeling tube adhered to the outer circumference of the branch pipe lining material before being inverted is attached to the pressure bag. Characterize.

[0018]

According to the present invention, the branch pipe lining material constituted by detachably attaching the peeling end to the reversing end is reversely inserted into the branch pipe from the main pipe side toward the ground by fluid pressure, When the pipe lining material hardens, the peeling end is peeled off and removed, so cutting work on the ground side of the inverted end of the branch pipe lining material is unnecessary,
All the work can be performed on the main side, and as a result, it becomes possible to always reliably carry out the lining of the branch pipe regardless of the situation on the ground.

[0019]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of a branch pipe lining material according to the present invention, and FIG. 2 is an enlarged detailed view of a portion A (inverted end portion) of FIG.

The branch pipe lining material 1 shown in FIG. 1 is configured to include a tubular resin absorbent material 2 made of non-woven fabric, and one end thereof is folded back outward to form a flange-shaped collar 3. An uncured liquid thermosetting resin is impregnated in the portion of the tubular resin absorbent 2 excluding the collar 3, and the inner surface of the portion is coated with a highly airtight plastic film 4. In addition, polyester, polypropylene, nylon, acrylic, vinylon or the like is selected as the material of the non-woven fabric forming the tubular resin absorbent 2, and unsaturated polyester resin, epoxy resin or the like is used as the thermosetting resin impregnated therein. To be The material of the plastic film 4 is polyurethane, polyethylene,
Polyethylene / nylon copolymer, vinyl chloride, etc. are selected.

By the way, the collar 3 formed at one end of the tubular resin absorbent material 2 has a curved surface curved in an arc shape with a curvature equal to that of a main pipe 30 (see FIG. 3) described later, and its outer diameter is It is set to be larger than the inner diameter of a branch pipe 31 (see FIG. 3) described later, and the curable resin impregnated in the branch pipe 31 is cured so that the collar 3 retains its shape.

A peeling tube 5 of a predetermined length is passed through the outer side of the tubular resin absorbent material 2. The peeling tube 5
Has one end peelably adhered to the outer periphery of the tubular resin absorbent material 2 in the vicinity of the collar 3, and the other end is open. The material of the peeling tube 5 is the same as that of the plastic tube 4.

On the other hand, the other end (inverted end) of the tubular resin absorbent material 2
A tubular peeling end 6 is detachably attached to the. As shown in detail in FIG. 2, one end of the peeling end 6 is closed by a fastener 7, and the other end opening is fitted to the outer circumference of the tubular resin absorbent material 2. And are connected by a plastic film 9 welded to both. A pulling rope 10 and an air bleeding hose 11 are connected to the peeling end 6 by the bolt 7 and the nut 8.

Next, a branch pipe lining method according to the present invention, which is constructed by using the branch pipe lining material 1, will be described with reference to FIGS. 3 to 7. 3 to 6 are sectional views showing the branch pipe lining method according to the present invention in the order of steps thereof, and FIG.
FIG. 7 is an enlarged detailed view of a B part in FIG. 6.

In FIG. 3, 30 is a main pipe such as a sewer pipe and 3
Reference numeral 1 denotes a small-diameter branch pipe that branches from the main pipe 30, and the main pipe 3
A work robot 12, a pressure bag 13, a branch pipe lining material 1 and the like, which have been preliminarily assembled and integrated on the ground, are drawn into 0.

The work robot 12 is hydraulically driven so that its head 14 moves back and forth in the directions of arrows a and b in FIG.
Moreover, the head 14 rotates in the direction of arrow c.
A flange-shaped set nozzle 15 is supported by.
In addition, a T for monitoring is provided on the upper part of the work robot 12.
A V camera 16 is installed. The tow ropes 17 and 18 are attached to the front and rear of the work robot 12, one tow rope 17 is connected to the pressure bag 13, and the other tow rope 18 extends to the ground.

On the other hand, the pressure bag 13 is constructed by connecting two flexible tubes 19 and 20 with a cylindrical joint 21 and closing the open end of one tube 19 with a cap 22. The open end of the other tube 20 is attached to the tubular portion 15a of the set nozzle 15.

The collar 3 of the branch pipe lining material 1 is set on the set nozzle 15, and the other non-inverted portion (the portion of the tubular resin absorbent material 2 excluding the collar 3 and the peeling end 6). Is stored in the pressure bag 13 through the set nozzle 15. At this time, peel off end 6
The tow rope 10 connected to the cap is attached to the cap 22, and the air bleeding hose 11 is connected to the cap 2.
2 and extends outside the pressure bag 13, and a valve 23 is attached to the end thereof.

The peeling tube 5 attached to the outer periphery of the tubular resin absorbent 2 is also housed in the pressure bag 13, and the open end of the peeling tube 5 together with the tube 20 is the outer periphery of the joint 21. Is attached to.

In the pressure bag 13, a closed space S closed by the branch pipe lining material 1 and the peeling tube 5 is formed, and the closed space S is air / warm water attached to the cap 22. It is connected to a compressor 25 installed on the ground via a hose 24, and is also connected to a hot water tank 27 via a hot water hose 26 branched from the air / hot water hose 24. And hot water hose 2
A valve 28 and a hot water pump 29 are connected in the middle of 6,
A valve 32 is connected to the air / warm water hose 24.

In the above, the tow rope 18 or the pressure bag 13 (the hot water hose 11 and the air hose 24)
By pulling the work robot 12, the branch pipe lining material 1 and the pressure bag 13 supported by the work robot 12 move integrally in the main pipe 30, but the inside of the main pipe 30 is monitored by the TV camera 16. However, as shown in FIG. 3, the collar 3 of the branch pipe lining material 1 is positioned in the opening of the branch pipe 31, and the head 14 of the work robot 12 is moved to the arrow a.
In the main direction by moving the collar 3 of the branch pipe lining material 1 upward
The peripheral wall of the branch pipe opening (the portion where the branch pipe 31 opens in the main pipe 30) is pressed to bring it into close contact.

Next, with the valves 23 and 28 closed and the valve 32 opened, the compressor 25 is driven to supply compressed air to the closed space S in the pressure bag 13 via the air / hot water hose 24. Then, as shown in FIG. 4, the branch pipe lining material 1 is sequentially inserted from the main pipe 30 toward the ground side (upward) in the branch pipe 31 while being inverted by receiving the pressure of compressed air. At this time, the closed space S is hermetically sealed by the peeling tube 5.

Here, the length of the tubular resin absorbent material 2 of the branch pipe lining material 1 is set to be shorter than the length of the branch pipe 31, and as shown in FIG. When the inversion insertion into the branch pipe lining material 1 is completed, the tubular resin absorbent material 2 of the branch pipe lining material 1 is partially pressed against the inner peripheral wall of a part of the branch pipe 31 (a portion having a predetermined length from the main pipe 31). The peeling end 6 is inverted as shown, and the air vent hose 11 connected to the peeling end 6 is pulled into the closed space S. Further, the plastic film 9 that connects the peeling end 6 and the tubular resin absorbent material 2 faces the closed space S.

Next, the valve 32 is closed and the valves 23, 2 are closed.
If the hot water pump 29 is driven to supply hot water into the closed space S through the hot water hose 26 and the air / hot water hose 24 with the open state 8, compressed air in the closed space S will be discharged from the air bleed hose 11. Then released into the atmosphere, while
As shown in FIG. 4, the branch pipe lining material 1 is heated while being pressed against the inner peripheral wall of the branch pipe 31, the thermosetting resin impregnated in the tubular resin absorbent material 2 is cured, and the branch pipe 31 is A part of the inner peripheral surface of the cured tubular resin absorbent material 2 is partially lined and repaired.

Thus, as described above, the branch pipe lining material 1
When the tubular resin absorbent material 2 is hardened, hot water is drained from the closed space S, and the head 14 of the work robot 12 is moved downward in the direction of the arrow b as shown in FIG.
Is separated from the collar 3 of the branch pipe lining material 1, and then the air bleeding hose 11 and the like are drawn in the direction of the arrow shown in the drawing (leftward in FIG. 5).

Then, the pressure bag 13 and the working robot 12 connected to the pressure bag 13 via the towing rope 17, the peeling tube 5 attached to the joint 21 of the pressure bag 13, and the cap 22 via the towing rope 10 are connected. The peeled off end 6 is pulled in the same direction, the peeled off tube 5 is peeled off from the inner peripheral surface of the tubular resin absorbent material 2 of the branch pipe lining material 1, and the peeled off end 6 has the plastic film 9 absorbed by the tubular resin absorbent material 2. By being peeled off from the inner peripheral surface of the material 2, the tubular resin absorbent material 2 is separated.

Therefore, the air bleeding hose 11, the work robot 12, the pressure bag 13, the peeling tube 5 and the peeling end 6 move integrally in the main pipe 30 and are removed from the main pipe 30, as shown in FIG. As shown in FIG. 5, the hardened flange 3 of the branch pipe lining material 1 and the tubular resin absorbent material 2 are left in the branch pipe 31, and a series of lining work for the branch pipe 31 is completed there. The branch pipe 31 with the lining finished
As shown in detail in FIG. 7, a tubular resin absorbent material 2 is lined on the inner wall of the via a plastic film 4.

As described above, in the present embodiment, the branch pipe lining material 1 constituted by detachably attaching the peeling end 6 to the inverting end is placed in the branch pipe 31 from the main pipe 30 side by fluid pressure. When the branch pipe lining material 1 is reversely inserted toward the ground and the peeling end 6 is peeled off to remove the branch pipe lining material 1, it is not necessary to cut the inverted end of the branch pipe lining material 1 on the ground side. Therefore, all the work can be performed on the main pipe 30 side, and as a result, it is possible to always reliably perform the lining of the branch pipe 31 regardless of the situation on the ground.

The example in which the tubular resin absorbent material 2 of the branch pipe lining material 1 is impregnated with a thermosetting resin has been described above, but the tubular resin absorbent material 2 may be a photocurable resin or other curable resin. May be impregnated.

[0041]

As is apparent from the above description, according to the present invention, a collar is formed at one end of a tubular resin absorbent material which is formed by impregnating a curable resin and coating the inner surface with a film having high airtightness. , A branch pipe lining material constituted by detachably attaching a peeling end to the other end is introduced into the main pipe in a state where the collar is folded back, and the collar of the branch pipe lining material is introduced into the branch pipe opening portion of the main pipe. The branch pipe lining material is inserted into the branch pipe by fluid pressure from the main pipe side toward the ground in a state of being closely attached to the peripheral edge, and the branch pipe lining material is pressed against the inner peripheral surface of the branch pipe, After curing the curable resin impregnated in the lining material, the peeling end was peeled off to remove it, so all the work can be done from the main side, regardless of the situation on the ground. Reliably branch pipe lining The effect is obtained that it is possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a branch pipe lining material according to the present invention.

FIG. 2 is an enlarged detailed view of a portion A (inverted end portion) of FIG.

FIG. 3 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 4 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 5 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 6 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 7 is an enlarged detailed view of a B part in FIG.

FIG. 8 is a sectional view showing a conventional branch pipe lining method.

[Explanation of symbols]

 1 Branch pipe lining material 2 Tubular resin absorbent material 3 Tsuba 4 Plastic tube 5 Peeling tube 6 Peeling end 9 Plastic tube 10 Traction rope 11 Air bleeding hose 12 Working robot 13 Pressure bag 15 Set nozzle 30 Main pipe 31 Branch pipe

[Procedure amendment]

[Submission date] June 13, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 5

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

In the above, the tow rope 18 or the pressure bag 13 (the hot water hose 11 and the air hose 24)
The work robot 12 and the branch pipe lining material 1 and the pressure bag 13 supported by the work robot 12 move integrally within the main pipe 30 by pulling the robot 12, while monitoring the inside of the main pipe 30 by the TV camera 16. As shown in FIG. 3, the collar 3 of the branch pipe lining material 1 is positioned in the opening of the branch pipe 31, and the head 14 of the working robot 12 is moved to the arrow a.
In the main direction by moving the collar 3 of the branch pipe lining material 1 upward
The peripheral wall of the branch pipe opening (the portion where the branch pipe 31 opens in the main pipe 30) is pressed to bring it into close contact.

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

Claims (7)

[Claims] 1. A structure in which a flange is formed at one end of a tubular resin absorbent material which is impregnated with a curable resin and whose inner surface is coated with a highly airtight film, and the peeling end is detachably attached to the other end. Branch pipe lining material characterized by being processed. 2. The peeling end is formed into a tubular shape,
The branch pipe lining material according to claim 1, wherein one end thereof is closed and the other end opening portion is fitted to an outer peripheral portion of one end of the resin absorbent material and heat-welded to the resin absorbent material through a film. . 3. The branch pipe lining material according to claim 1, wherein a peeling tube is bonded to an outer periphery of the resin absorbent material in the vicinity of the brim. 4. A tubular resin absorbent material, which is impregnated with a curable resin and whose inner surface is coated with a highly airtight film, has a brim formed at one end, and a peeling end is detachably attached to the other end. The branch pipe lining material to be introduced is introduced into the main pipe in a state where the collar is folded back, and the branch pipe lining material is fluid-pressured with the collar of the branch pipe lining material being in close contact with the peripheral edge of the branch pipe opening of the main pipe. Inverted insertion into the branch pipe from the main side toward the ground, while pressing the branch pipe lining material against the inner peripheral surface of the branch pipe, after curing the curable resin impregnated in the branch pipe lining material, A branch pipe lining method, characterized in that the peeling end is peeled off to remove it. 5. An open end of a pressure bag is attached to a set nozzle held by a work robot movably introduced into the main pipe, and the branch pipe lining material is internally provided in the pressure bag, and the branch pipe lining material is provided. The collar of the above is exposed to the outside of the pressure bag and is set on the set nozzle, and a pressure fluid is supplied into the inside of the pressure bag while the collar is closely attached to the peripheral edge of the branch pipe opening of the main pipe. The branch pipe lining method according to claim 4, wherein the pipe lining material is inverted and inserted into the branch pipe. 6. The branch pipe lining material is impregnated with a thermosetting resin, and a pulling rope and a hot water hose are attached to the peeling end of the branch pipe lining material to invert the branch pipe lining material into the branch pipe. By pulling the tow rope and the hot water hose into the branch pipe lining material by insertion, the thermosetting resin impregnated in the branch pipe lining material is heated and hardened by the hot water supplied by the hot water hose to cure the thermosetting resin. The branch pipe lining construction method according to claim 4, wherein the peeling end is peeled off using the pulling rope after the resin is cured. 7. The branch pipe lining construction method according to claim 4, wherein the other end of the peeling tube adhered to the outer periphery of the branch pipe lining material before reversal near the flange is attached to the pressure bag.