JP5785246B2 - Branch pipe mounting socket and branch pipe connection method - Google Patents

Description

  The present invention relates to a branch pipe mounting socket and a branch pipe connecting method, and more particularly, to a branch pipe mounting socket and a branch pipe connecting method applied when connecting a branch pipe to a main pipe restored with a resin lining material. About.

The present invention relates to a lining method for repairing pressure pipelines such as aging agricultural water pipes, water pipes, industrial water pipes, and gas pipes.
In the past, methods have been used to correct old pipes by pipe lining methods, and branch pipe connection parts can be opened by partially cutting the main pipe of the connection destination when people cannot enter the pipe. It was. When a person enters the tube, a method in which the person enters the tube and perforates is employed.
However, if the branch pipe connection portion is opened after the main pipe is lined, water leakage may occur at the connection portion because the watertightness between the lining material and the existing branch pipe is not ensured.

Further, opening the branch pipe connecting portion causes a state similar to that in which a defective portion is generated in the main pipe lining, and there is a problem that the strength of the portion is lowered.
This drop in strength becomes more severe as the branch pipe diameter is larger than the main pipe diameter, and when a large tensile force acts on the branch pipe connection part due to an earthquake, the perforated part of the branch pipe connection part may break.
In order to solve this problem, it is necessary to securely bond or integrally bond with the main pipe lining material and to reinforce the perforated portion.

Japanese Patent Laid-Open No. 08-034055 Japanese Patent Laid-Open No. 06-234160

  The present invention relates to a branch pipe mounting socket and a branch pipe connection capable of securely bonding or bonding the main pipe lining material and the branch pipe and securely reinforcing the perforated portion when connecting the branch pipe to the main pipe lining material. The purpose is to provide a method.

A branch pipe mounting socket according to the present invention (part 1) is a branch pipe mounting socket with a collar used when a branch pipe is attached to a main pipe rehabilitation material comprising an existing main pipe and a main pipe lining material. A branch pipe socket main body comprising a tube having the same thickness and inner / outer diameter as the branch pipe; and an annular branch integrally formed with the branch pipe socket main body at one pipe end of the branch pipe socket main body A flange portion of the tube socket, and one surface of the flange portion of the branch tube socket not connected to the branch tube socket main body has a curved surface closely contacting the outer periphery of the main pipe lining material, and the volume of the flange portion is The area of the portion where the existing main pipe is removed , the area of which the collar covers the outer periphery of the main lining material is larger than the area of the perforated plate, and is larger than the perforated plate volume of the perforated part communicating with the branch pipe of the pipe lining material The outer peripheral surface of the main lining material and the branch pipe One surface of the collar portion of the nut is a bonding portion, and the bonding portion is bonded with a resin adsorbent coated and impregnated with a thermosetting resin with a two-component adhesive in which a main agent and a curing material are mixed. The collar portion is coupled to the main lining material by pressing the collar portion from the outside .

A branch pipe mounting socket (part 2) according to the present invention is a half pipe type branch pipe mounting socket used when a branch pipe is attached to a pipe rehabilitation material comprising an existing main pipe and a main pipe lining material, A branch pipe socket main body comprising a tube having the same thickness and inner and outer diameter as the branch pipe, and a half pipe formed integrally with the branch pipe socket main body at one pipe end of the branch pipe socket main body And flanges for fastening bolts at both ends in the circumferential direction of the half pipe, and the main pipe lining material is a thermosetting resin in a section corresponding to a predetermined length including the half pipe at the inner circumference. The half pipe is a semicircular arc having a predetermined half pipe length and the same inner and outer diameter as the existing main pipe, and the branch pipe socket body is not attached. by a half tube, the existing main near the branch pipe installation portion predetermined length min, over the circumferential direction Characterized in that it is bolted to surround the outer periphery of the main pipe lining exposed Shi removed by.

A first branch pipe connection method according to the present invention is a branch pipe connection method for connecting a branch pipe by applying a branch pipe socket with a collar to a pipe rehabilitation material composed of an existing main pipe and a main pipe lining material, A perforated part forming step for perforating a branch pipe connection hole in a branch pipe connecting part of the pipe rehabilitating material, and an existing main pipe corresponding to the collar part of the branch pipe socket around the perforated part of the pipe rehabilitating material is removed. Combining the outer peripheral surface of the main pipe lining material of the pipe rehabilitation material and the one surface of the collar part of the branch pipe socket to form a joint part, wherein the existing main pipe has been removed Fixing the collar portion with a belt-like fastener mounted in the outer circumferential direction of the pipe rehabilitation material, and coupling one end of the branch pipe socket main body portion and the branch pipe main body with a joint, Applying a thermosetting resin to the joint with a two-component adhesive in which a main agent and a curing material are mixed, Thereby bonding the dipped allowed resin adsorbent, by pressing the flange portion from the outside with fitting said clamping, wherein the flange portion is coupled to the main pipe liner bag.

The pressure on the outer surface of the main lining material on the other side of the collar portion of the branch pipe socket is by bolting a resin semicircular ring, tightening with a stainless steel wire rope, metal or resin belt. Features.

A second branch pipe connection method according to the present invention is a branch pipe connection method for connecting a branch pipe by applying a half pipe type branch pipe socket to a pipe rehabilitation material comprising an existing main pipe and a main pipe lining material. , predetermined length min the existing main pipe around the branch pipe installation unit, comprising the steps of exposing the main pipe liner bag is removed over the circumferential direction, half mold a pair corresponding to the existing main removing portion A pipe is installed in the circumferential direction of the main lining material, and a thermosetting resin is applied to a section corresponding to a predetermined length including a half-shaped frame tube on the inner periphery of the main lining material, and the main lining a method to increase the thickness of the wood part, after curing by heating the thermosetting resin, the steps of removing the half mold tube pair from the main pipe liner bag, said main pipe liner bag Forming a perforated portion for perforating a branch pipe connection hole in the branch pipe connecting portion; and Attach the use sockets, the steps of fastening the flange portion of the half-tube type branch pipe mounting socket, only contains the half tube half have the same inner and outer diameter as the predetermined half pipe length and the existing main pipe It is arc-shaped and is bolted so as to surround the outer periphery of the main pipe lining with a half pipe to which the branch pipe socket main body is not attached.

A packing is inserted between the outer peripheral surface of the main pipe lining material and the inner peripheral surface of the branch pipe socket.

A third branch pipe connection method according to the present invention is a branch pipe connection method in which a main pipe lining material is attached to an existing main pipe, and a branch pipe renewal material composed of the existing branch pipe and the branch pipe lining material is connected to the existing main pipe. A perforated part forming step for perforating a branch pipe connecting hole in a branch pipe connecting part of the existing main pipe, and passing one end of the resin-impregnated tubular liner material through the perforated part; the flange portion of the branch pipe lining material Sekkaii to Jo, the paste resin adsorbent inner and outer surfaces of the flange portion, the steps of pressing the first surface of the flange portion to the existing present pipe wall, the liner material tip petals A step of adsorbing a thermosetting resin to the collar portion cut into a shape and curing the portion, and impregnating the portion of the liner material excluding the collar portion with the thermosetting resin, and then inserting a pressure bag into the tube Warm water is supplied inside to harden the branch lining material. A step, and inserting to overlap the other surface of the flange portion of the main pipe liner bag into the existing present tube from a predetermined position of the existing main pipe, the resin filler hose through the branch pipe from the ground is inserted, the resin injection A thermosetting resin is injected into the outer periphery of the main lining material by a hose, and the main pipe lining material is pressurized by sandwiching the collar portion of the branch pipe between the existing main pipe and the main lining material. Pressing the section, inserting a pressure bag into the pipe, supplying warm water into the pressure bag to pressurize the main lining material and curing the main lining material, and after the main lining material is cured Piercing a fluid passage hole in the main pipe lining material of the branch pipe connection portion, and the volume of the collar portion is larger than the perforated plate volume of the perforation portion communicating with the branch pipe of the main pipe lining material, and , Collar The contact area of the first surface and the main pipe liner bag being greater than the area of the perforated plate.

  According to the present invention, since the perforated portion of the main lining material is reinforced with the branch pipe connection, the strength can be secured together with the water tightness of the branch pipe connection portion.

It is a figure which shows the manufacturing method of the branch pipe socket with a flange by Example 1 of this invention. It is longitudinal direction sectional drawing of the main pipe renovation material which shows the condition which applies a branch pipe socket to the main pipe lining material by Example 1 of this invention, and connects a branch pipe. It is sectional drawing of the main pipe renovation material which shows the condition which applies a branch pipe socket to the main pipe lining material by Example 1 of this invention, and connects a branch pipe. It is a figure which shows the hardening condition after the thickness increase of the main lining material by Example 2 of this invention. It is a figure which shows the condition which removed the half mold tube after hardening of the thickness increase part of the main lining material by Example 2 of this invention. It is a main pipe longitudinal direction sectional view which shows the condition which applies the half pipe type branch pipe socket by Example 2 of this invention, and connects a branch pipe. It is sectional drawing of a branch pipe socket with a collar. It is a figure which shows the relationship of the collar part of a perforated board and a branch pipe socket with a collar. It is a figure which shows the hardening condition of the branch pipe lining material with a flange by Example 3 of this invention. It is a figure which shows the reverse insertion state of the main lining material by Example 3 of this invention. It is a figure which shows the hardening condition of the main pipe lining material by Example 3 of this invention.

The present invention relates to a branch pipe socket 5 for a main pipe rehabilitation material 1 and a branch pipe connection method. As the branch pipe connection method, the branch pipe socket 5 is formed and the formed branch pipe socket 5 is used. The method (Examples 1 and 2) and one end of the tubular liner material not impregnated with the branch pipe resin are passed through the perforated portion 10, and then the tip is cut into a petal shape to form a branch pipe socket collar portion 7 of the branch pipe lining material 3. In addition, there is a method (Example 3) in which a portion other than the flange portion 7 of the branch pipe socket of the liner material is impregnated with a thermosetting resin and then cured to form the branch pipe lining material 3.
Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing a manufacturing method of a flanged branch pipe socket 5 according to a first embodiment of the present invention, and FIG. 2 is a branch diagram in which the branch pipe socket 5 is applied to the main pipe lining material 3 according to the first embodiment of the present invention. FIG. 3 is a longitudinal cross-sectional view of the main pipe rehabilitation material 1 showing a situation in which the pipe 4 is connected. FIG. 3 shows the connection of the branch pipe 4 by applying the branch pipe socket 5 to the main pipe lining material 3 according to the first embodiment of the present invention. It is sectional drawing of the main pipe renovation material 1 which shows a condition.
FIG. 4 is a view showing a hardening state after the increase in the thickness of the main lining material 3 according to the second embodiment of the present invention, and FIG. 5 is a diagram showing the hardening of the increased thickness portion of the main lining material 3 according to the second embodiment of the present invention. FIG. 6 is a view showing a state in which the half-shaped frame tube is later removed, and FIG. 6 is a main rehabilitation material showing a state in which the branch pipe 4 is connected by applying the half-tube type branch pipe socket according to the second embodiment of the present invention. 7 is a cross-sectional view of the flanged branch pipe socket 5, and FIG. 8 is a view showing the relationship between the perforated plate and the collar portion of the flanged branch pipe socket 5. FIG.
FIG. 9 is a diagram showing a curing state of the brim-branch lining material 22 according to the third embodiment of the present invention, and FIG. 10 is a diagram showing an inverted insertion situation of the main lining material 3 according to the third embodiment of the present invention. 11 is a figure which shows the hardening condition of the main pipe lining material 3 by Example 3 of this invention.

First, the structure and manufacturing method of the branch pipe socket 5 will be described.
As shown in FIG. 1, the branch pipe socket 5 includes a branch pipe socket body 6 made of a pipe body having the same thickness and inner and outer diameter as the branch pipe 4 attached to the main pipe rehabilitation material 1, and one of the branch pipe socket body 6. An annular branch pipe socket collar 7 formed integrally with the branch pipe socket body 6 at the pipe end, and one surface of the annular collar 7 has a curved surface that is in close contact with the outer periphery of the main pipe lining material 3. Have.
The volume of the collar portion 7 is larger than the volume of the perforated plate 20 of the perforated portion 10 communicating with the branch pipe 4 of the main lining material 3, and the area where the collar portion 7 covers the outer periphery of the main lining material 3 is It is characterized by being larger than the area.
Here, the perforated plate 20 refers to a portion corresponding to the perforated portion 10 cut out from the perforated portion 10 for attaching the branch pipe 4 to the main pipe rehabilitation material 1, and the volume of the perforated plate 20 is equal to that of the perforated portion 10. It is calculated from the area of the perforated plate 20 calculated from the inner diameter and the thickness of the main pipe lining material 3.

The method of connecting the main pipe rehabilitation material 1 by providing a flange 7 projecting in the form of a flange at the end of the branch pipe 4 at the junction between the main pipe rehabilitation material 1 and the main pipe rehabilitation material 1 is as follows. It was a well-known technique in the field of waterworks.
However, there is no knowledge about the appropriate size of the collar part, and there are problems such as insufficient strength due to an excessive collar part, difficulty in work due to providing an excessive collar part, and cost increase.
Therefore, in the present invention, the size of the collar portion 7 is necessary and sufficient on the basis of a clear basis so that a satisfactory effect can be obtained.

In determining the size of the collar portion 7, the reason why the relationship between the volume of the collar portion 7 and the volume of the perforated plate 20 is provided is as follows.
Most of the main pipe rehabilitation material 1 composed of the existing main pipe 2 and the main pipe lining material 3 is lined with a resin lining material having an integral structure without a joint with respect to an old existing main pipe 2 having a certain length. It has a structure.
When the branch pipe 4 is connected, it is necessary to perforate the connection portion. However, there is a problem in that the resin lining material at the connection portion deteriorates due to the perforation.
Accordingly, the thickness of the lining material around the perforated portion 10 is increased, and the area where the collar portion 7 covers the outer periphery of the main pipe lining material 3 is made larger than the area of the perforated plate 20 to be firmly bonded, thereby allowing the perforated portion 10 to be firmly bonded. The strength was restored.

The effect of the above measures could be confirmed by a strength recovery experiment.
As a result of conducting the strength recovery experiment under various conditions, the thickness of the periphery of the perforated part 10 is increased so that the volume of the lining material around the perforated part 10 is equal to or greater than the perforated plate 20 which is a portion lost by the perforation, In addition, the area where the collar portion 7 covers the outer periphery of the main lining material 3 is made larger than the area of the perforated plate 20, and the collar portion 7 and the main lining material 3 are firmly bonded with an adhesive, so that the strength is perforated. It was found that it recovered to the previous state.
As a method of reinforcing the connecting portion, a half-shaped frame tube 15 is installed on the outer periphery of the main lining material 3 at the connecting portion of the branch pipe 4, and the main lining material 3 inside the half-shaped frame tube 15 is placed. After reinforcing by increasing the thickness, the half mold tube 15 is removed and the half pipe 18 is attached to the place, or the main pipe lining material 3 is thickened after the half mold tube 15 is removed. There is also a method.

The manufacturing method of the branch pipe socket is as shown in FIG.
First, a tubular outer peripheral portion having the same outer diameter as the inner diameter of the branch pipe socket 5, an inner diameter of the existing main pipe 2 and an outer diameter of the main pipe lining material 3, and a main pipe lining. On the branch pipe socket lower mold 8 having a curved surface that is in close contact with the outer periphery of the material 3, the branch pipe socket body 6 equivalent part is the same thickness as the branch pipe socket body 6, and the collar part 7 equivalent part is the existing main pipe 2. A non-adsorbed non-woven fabric or glass fiber having the same thickness is wound and arranged.
And liquid thermosetting resins, such as unsaturated polyester, vinyl ester, and epoxy, are made to adsorb | suck to the non-adsorbed nonwoven fabric or glass fiber.
Next, the branch pipe socket upper mold 9 is overlaid on the outer peripheral part of the nonwoven fabric or glass fiber of the branch pipe socket body 6 and the nonwoven fabric or glass fiber of the collar part 7,
The thermosetting resin adsorbed on the nonwoven fabric or glass fiber is cured.

The volume of the collar portion 7 is calculated from the surface area of the annular collar portion and the thickness of the collar portion.
The perforated plate 20 is a portion corresponding to the perforated portion 10 cut out from the perforated portion 10 for attaching the branch pipe 4 to the main pipe rehabilitation material 1, and the area of the perforated plate 20 is calculated from the inner diameter of the perforated portion 10. The volume of the perforated plate 20 is calculated from the area of the perforated plate 20 and the thickness of the main lining material 3.

Next, a branch pipe connection method for connecting the branch pipe 4 by applying the branch pipe socket 5 to the main pipe lining material 3 according to the first embodiment of the present invention will be described.
The main lining material 3 is manufactured by processing a resin-impregnated liner material such as nonwoven fabric or glass fiber into a tubular shape, covering the inner and outer surfaces with a resin film to make it airtight, and then impregnating with a liquid thermosetting resin. Is done.

In Example 1,
As shown in FIGS. 2 and 3, a branch pipe connection hole 11 is drilled in the branch pipe connection portion 10 of the main pipe rehabilitation material 1 composed of the existing main pipe 2 and the main pipe lining material 3 to form a perforation section 10.
Next, the existing main pipe 2 corresponding to the flange portion 7 of the branch pipe socket 5 is removed around the perforated portion 10 of the pipe rehabilitation material.
The outer peripheral surface of the main pipe lining material 3 of the main pipe rehabilitation material 1 in the portion where the existing main pipe 2 has been removed and one face of the collar portion 7 of the branch pipe socket 5 are combined to form a combined portion, and the combined collar portion 7 Is fixed by a belt-like fastener 12 mounted in the outer peripheral direction of the main pipe rehabilitation material 1, and one end of the branch pipe socket body 6 and the branch pipe 4 body are joined by a joint 13.

A resin adsorbent coated with a thermosetting resin, such as a two-component adhesive mixed with the main agent and a curing material, is adhered to the inner surface or the entire outer surface or a part of the collar portion 7, and the collar portion 7 of the branch pipe socket 5 is bonded. By pressing the other surface, the bonding can be strengthened.
The pressing may be performed by bolting a resin semicircular ring, tightening with a stainless steel wire rope, a metal or resin belt.
Further, a packing may be inserted between the outer peripheral surface of the main pipe lining material 3 and one surface of the collar portion 7 of the branch pipe socket 5.

Embodiment 2 of the present invention is a branch pipe connection method for connecting a branch pipe 4 by applying a half pipe 18 type branch pipe socket 5 to a main pipe rehabilitation material 1 comprising an existing main pipe 2 and a main pipe lining material 3. It is.
As shown in FIGS. 4 and 5, the existing main pipe 2 around the branch pipe connecting portion 10 is removed by a predetermined length in the circumferential direction to expose the main pipe lining material 3.
Next, a pair of halved mold tubes 15 corresponding to the removed portions of the existing main pipe 2 are installed in the circumferential direction of the main lining material 3, and a half mold frame is formed on the inner circumference of the main lining material 3. A thermosetting resin that partially increases the wall thickness of the main pipe lining material 3 is applied to a section corresponding to a predetermined length from both pipe ends of the pipe 15. Specifically, it is desirable to apply a thermosetting resin 0.2 to 1.5 times the wall thickness of the main pipe lining material 3.
The applied thermosetting resin is cured by a shower from a hot water shower hose 16 inserted into the main lining material 3, and then the pair of half mold tubes 15 are removed from the main lining material 3.
After removing the main pipe lining material 3, a branch pipe connection hole 11 is drilled in the branch pipe connection section 10 of the main pipe lining material 3 to form the drilling section 10. The branch pipe socket 5 is attached, and the flange 19 of the half pipe 18 type branch pipe socket 5 is fastened.

Regarding the relationship between the volume of the half pipe 18 of the branch pipe socket 5 and the volume of the perforated plate 20, the volume of the half pipe 18 of the branch pipe socket 5 is connected to the branch pipe 4 of the main pipe lining material 3. The value obtained by subtracting the area of the perforated plate 20 from the area where the volume of the perforated plate 20 is larger than the volume of the perforated plate 20 and the half pipe 18 covers the outer periphery of the main pipe lining material 3. Be larger than the area.
The half pipe 18 has a semicircular arc shape having a predetermined half pipe 18 length and the same inner and outer diameter as the existing main pipe 2, and the main pipe lining material by the half pipe 18 to which the branch pipe socket body 6 is not attached. 3 is bolted so as to surround the outer peripheral portion of 3.

Next, a branch pipe connection method for connecting the branch pipe 4 by forming the collar portion 7 at one end of the tubular liner material according to the third embodiment of the present invention will be described.
As shown in FIGS. 9 to 11, in this method, one end of a tubular liner material not impregnated with a branch pipe is passed through the perforated portion 10, and then the tip is cut into a petal shape to form a collar portion 7 of the branch lining material 22. In this method, the portion of the liner material excluding the brim portion 7 is impregnated with a thermosetting resin, and then cured to form a branch pipe lining material 22, and the main pipe lining material 3 is attached to the existing main pipe 2, A branch pipe rehabilitation material 25 composed of the existing branch pipe 4 and the branch pipe lining material 22 is connected to the existing main pipe 2.

First, the branch pipe connection hole 10 is drilled in the branch pipe connection section 10 of the existing main pipe 2 to form the drilling section 10.
After passing one end of the resin-impregnated tubular liner material through the perforated portion 10, the tip is cut into a petal shape to form a collar portion 7 of the branch pipe lining material 22, and one surface of the collar portion 7 is formed on the existing main pipe 2. The thermosetting resin is adsorbed and cured on the collar portion 7 which is pressed against the inner peripheral wall and cut into a petal shape at the tip of the liner material.
And after impregnating a thermosetting resin in the part except the collar part 7 of a liner material, the pressure bag 23 is inserted in a pipe | tube, warm water is supplied inside the pressure bag 23, and the branch pipe lining material 22 is hardened.

Next, the main lining material 3 is inserted into the existing main pipe 2 from a predetermined location of the existing main pipe 2 so as to overlap the other surface of the collar portion 7.
After lining the branch pipe 4 with the collar portion 7 pressed against the existing main pipe 2, the main pipe lining material 3 is inserted into the existing main pipe 2, and the outer periphery of the main pipe lining material 3 is passed through the branch pipe 4 from the ground. A thermosetting resin is injected into the container.
And the collar part 7 of the branch pipe 4 is pressed by inserting the collar part 7 of the branch pipe 4 with the existing main pipe 2 and the main pipe lining material 3 and pressurizing the main pipe lining material 3.
A pressure bag 23 is inserted into the pipe of the main lining material 3, hot water is supplied into the pressure bag 23 to pressurize the main lining material 3 and harden the main lining material 3. A hole 11 for passing a fluid is formed in the main lining material 3.
The volume of the collar portion 7 and the volume of the perforated plate 20 of the perforated portion 10 communicating with the branch pipe 4 of the main lining material 3, and the contact area between one surface of the collar portion 7 and the main lining material 3 and the area of the perforated plate 20 This relationship is the same as in the case of the branch pipe socket 5 described above.

DESCRIPTION OF SYMBOLS 1 Main pipe rehabilitation material 2 Existing main pipe 3 Main pipe lining material 4 Branch pipe, existing branch pipe 5 Branch pipe socket 6 Branch pipe socket main body 7 Collar part 8 Branch pipe socket lower form 9 Branch pipe socket upper form 10 Perforated part , Branch pipe connection part 11 hole 12 fastening tool 13 joint
14 Packing 15 Half-shaped frame pipe 16 Hot water shower hose 17 Thickened part 18 Half-split pipe 19 Flange 20 Perforated plate 21 Donut-shaped resin adsorbent 22 Branch pipe lining material 23 Pressure bag 24 Resin injection hose 25 Branch pipe rehabilitation material

Claims (7)

A branch pipe mounting socket with a collar used when attaching a branch pipe to a main pipe rehabilitation material consisting of an existing main pipe and a main pipe lining material,
A branch pipe socket main body comprising a pipe body having the same thickness and inner and outer diameter as the branch pipe;
A collar portion of an annular branch pipe socket formed integrally with the branch pipe socket main body at one pipe end of the branch pipe socket main body;
One surface of the collar portion of the branch pipe socket that does not connect to the branch pipe socket main body has a curved surface that is in close contact with the outer periphery of the main pipe lining material, and the volume of the collar section communicates with the branch pipe of the main pipe lining material And the area where the collar covers the outer periphery of the main lining material is larger than the area of the perforated plate,
A two-component adhesive in which the outer peripheral surface of the main lining material at the portion where the existing main pipe has been removed and one surface of the collar portion of the branch pipe socket are used as a joint portion, and the main agent and the curing material are mixed in the joint portion. In this case, the resin adsorbent coated and impregnated with a thermosetting resin is bonded, and the collar portion is bonded to the main lining material by pressing the collar portion from the outside. Socket for tube mounting.
A half pipe type socket for mounting a branch pipe used when attaching a branch pipe to a pipe rehabilitation material comprising an existing main pipe and a main pipe lining material,
A branch pipe socket main body comprising a pipe body having the same thickness and inner and outer diameter as the branch pipe;
A half pipe formed integrally with the branch pipe socket main body at one pipe end of the branch pipe socket main body;
A flange for fastening bolts at both ends in the circumferential direction of the half pipe,
The main pipe lining material is coated with a thermosetting resin in a section corresponding to a predetermined length including a half pipe at the inner periphery, and the wall thickness is partially increased. A semicircular arc with the same inner and outer diameter as the split pipe length and the existing main pipe, and a half pipe with no branch pipe socket body attached , A branch pipe mounting socket which is bolted so as to surround an outer peripheral portion of a main pipe lining removed and exposed in a direction .
A branch pipe connection method for connecting a branch pipe by applying a branch pipe socket with a collar to a pipe rehabilitation material composed of an existing main pipe and a main pipe lining material,
A perforated part forming step of perforating a branch pipe connecting hole in the branch pipe connecting part of the pipe rehabilitation material;
Removing the existing main pipe corresponding to the flange portion of the branch pipe socket around the perforated portion of the pipe rehabilitation material;
Combining the outer peripheral surface of the main pipe lining material of the pipe rehabilitation material and the one surface of the collar part of the branch pipe socket to remove the existing main pipe;
Fixing the combined brim portion with a belt-like fastener attached in the outer circumferential direction of the pipe rehabilitation material;
Joining one end of the branch pipe socket main body part and the branch pipe main body with a joint,
A two-component adhesive in which a main agent and a curing material are mixed is adhered to the joint portion, and a resin adsorbent coated with and impregnated with a thermosetting resin is adhered, and the collar portion is pressed from the outside with the fastener. Thus , the branch pipe connecting method is characterized in that the collar portion is coupled to the main lining material .
The pressure on the outer surface of the main lining material on the other side of the collar portion of the branch pipe socket is by bolting a resin semicircular ring, tightening with a stainless steel wire rope, metal or resin belt. The branch pipe connection method according to claim 3, wherein:
A branch pipe connection method for connecting a branch pipe by applying a half pipe type branch pipe socket to a pipe rehabilitation material made of an existing main pipe and a main pipe lining material,
Branch pipe installation portion predetermined length min the existing main pipe surrounding the steps of exposing the main pipe liner bag is removed over the circumferential direction,
Installing a pair of halved mold tubes corresponding to the existing main pipe removal section in the circumferential direction of the main lining material;
A thermosetting resin is applied to a section corresponding to a predetermined length including a half-shaped frame tube on the inner peripheral portion of the main lining material, and the thickness of the main lining material is partially increased;
After curing by heating the thermosetting resin, the steps of removing the half mold tube pair from the main pipe liner bag,
Forming a perforated part for perforating a branch pipe connecting hole in the branch pipe connecting part of the main lining material;
The perforated portion fitted with a half-tube type branch pipe mounting socket, viewed including the steps, a fastening flange part of the half-tube type branch pipe mounting socket,
The half pipe is a semicircular arc having a predetermined half pipe length and the same inner and outer diameter as the existing main pipe, and surrounds the outer periphery of the main pipe lining with a half pipe to which the branch pipe socket main body is not attached. A branch pipe connection method characterized by being bolted.
The branch pipe connection method according to claim 5, wherein a packing is inserted between an outer peripheral surface of the main pipe lining material and an inner peripheral surface of the branch pipe socket.
A branch pipe connection method for attaching a main pipe lining material to an existing main pipe and connecting a branch pipe rehabilitation material composed of an existing branch pipe and a branch pipe lining material to the existing main pipe,
A perforated part forming step of perforating a branch pipe connecting hole in the existing main pipe branch pipe connecting part;
After passing one end of the resin-impregnated tubular liner material through the perforated portion, the tip is cut into a petal shape to form a collar portion of the branch pipe lining material, and a resin adsorbent is attached to the inner and outer surfaces of the collar portion. Pressing one side of the section against the existing inner wall of the main pipe ,
Adsorbing and curing a thermosetting resin on a collar portion cut into a petal shape at the tip of the liner material; and
After impregnating a portion of the liner material excluding the collar portion with a thermosetting resin, inserting a pressure bag into the pipe and supplying warm water into the pressure bag to cure the branch pipe lining material;
Inserting a main lining material from a predetermined location of the existing main pipe into the existing main pipe so as to overlap the other surface of the collar portion;
A resin injection hose is inserted from the ground through the branch pipe, and a thermosetting resin is injected into the outer periphery of the main lining material by the resin injection hose, and a collar part of the branch pipe is formed by the existing main pipe and the main lining material. Pressing the collar of the branch pipe by pressing the main lining material
Inserting a pressure bag into the tube, supplying hot water into the pressure bag, pressurizing the main lining material, and curing the main lining material;
Drilling a fluid passage hole in the main pipe lining material of the branch pipe connection after the main pipe lining material is cured,
The volume of the collar portion is larger than the perforated plate volume of the perforated portion communicating with the branch pipe of the main lining material, and the contact area between one surface of the collar portion and the main lining material is larger than the area of the perforated plate. Branch pipe connection method.

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