JP5156596B2 - Perforated part sealing processing method for existing line to be lined and perforated part sealing processing jig - Google Patents

Description

  The present invention relates to a perforated portion sealing processing method and a perforated portion sealing processing jig for an existing pipe line (lined existing line) subjected to lining processing by a lining reversal sealing method or the like.

  As a lining process for an existing pipe line, a method of lining a sealing agent on the inner surface of the pipe, a method of forming a resin film on the inner surface of the pipe, and the like are known. In particular, the lining reversal sealing method is a method of lining the hose-shaped sealing agent sequentially from one end to the other end of the tube while inverting the adhesive surface to the inner surface from the inside to the outside. It is widely used for rehabilitation and repair of aging pipes, repairs for earthquake countermeasures, etc., because of its advantages such as durability, high durability, and airtightness maintenance at the time of pipe breakage.

  In some cases, a perforated portion is formed for the purpose of connecting a branching portion to an existing pipeline subjected to such a lining treatment. In this case, the lining layer formed on the inner surface of the pipe together with the pipe wall is perforated. However, if a fluid is allowed to flow through the pipe by connecting a branch joint or the like to the perforated part, the perforated portion of the lining layer is peeled off from the inner surface of the pipe. In some cases, fluid may leak between the lining layer and the inner surface of the pipe. It is desirable that the inner surface of the pipe and the lining layer are completely in close contact with each other. However, if there is a poorly bonded part between the inner surface of the pipe and the lining layer, this poorly bonded part becomes a leakage path and the poorly sealed part of the pipe This leads to a problem that leakage to the outside of the tube occurs.

  Such a leakage phenomenon due to the perforation of the lining layer makes it extremely difficult to specify the leakage location to the outside of the tube, so that the fluid leaks from the perforation location of the lining layer between the lining layer and the inner surface of the tube. There is no effective solution other than prevention. As a concrete solution, a pressing member that presses the periphery of the perforated portion of the lining layer against the inner surface of the tube is attached to the perforated portion of the tube from the inside of the tube (see Patent Document 1 below). ).

  FIG. 1 is an explanatory diagram for explaining this prior art. This prior art is a method in which the flow of fluid in the pipeline P is interrupted, and the holding member previously provided in the pipeline P is removed by removing the plug J3 that has blocked the perforated portion P0 of the pipeline P. J1 is pulled up to the perforation part P0 by the traction line J2, and the pressing member J1 is attached to the perforation part P0 from the inside of the pipe line (see FIG. 1A).

1B and 1C show the structure of the pressing member J1. The pressing member J1 presses a pressing plate J10 having an O-ring J11 on the outer edge of the upper surface from the inner side of the pipe P toward the seal hose P1 attached to the inner surface of the pipe, and is attached to the perforated part P0. A bolt J13 penetrating the pressing plate J10 is inserted into the plug J12, and the bolt J13 is tightened with a nut J14 to press the pressing plate J10 against the inner surface of the pipe P. After the O-ring J11 is pressed against the seal hose P1, the sealant is injected into the inner space of the O-ring J11 through the sealant injection part J15 formed along the bolt J13, and this space is filled with the sealant. ing. An air vent hole J16 is formed in the plug J12, and air exchange when the sealing agent is injected into the inner space of the O-ring J11 is performed through the air vent hole J16.
JP-A-6-235493

  According to the above-described prior art, as shown in FIG. 1C, the sealing agent into which the air vent hole J16 is injected before the sealing agent injected from the sealing agent injection portion J15 is filled into the inner space of the O-ring J11. The air exchange in the inner space of the O-ring J11 is not performed, and there is a problem that an air pool is formed in the inner space and the sealing agent cannot be completely filled. In such a state, the sealed hose P1 around the perforated part P0 cannot be completely covered with the sealing agent, and the perforated part cannot be securely sealed, so that the lining layer is perforated. Leakage through the part cannot be avoided.

  In addition, the above-described conventional technique is a method of performing work after the pipe P is completely shut off. However, if this is applied to the pipe P in the active pipe state, the pipe P is connected to the pipe P from the air vent hole J16. The fluid that flows through the fluid leaks, and it is impossible to perform safe work. If it reduces, in the sealing process of the piercing | piercing part performed with respect to the pipe P of an active tube state, the air vent hole J16 cannot be provided like the prior art mentioned above. Accordingly, even if the inner space of the O-ring J11 is filled with the sealing agent after the O-ring J11 of the pressing plate J10 is pressed against the sealing hose P1, the gas in the inner space cannot be discharged, and the sealing agent Filling cannot be done completely.

  On the other hand, the drilling of the existing pipeline is not always performed with the pipeline open. For example, the drilling operation when connecting the branch joint to the gas pipeline is performed in a state where the gas flows in the pipeline, so that the gas supply to the downstream side is not interrupted even during the operation. . For this purpose, a no-blow operation for preventing gas ejection from the perforation part is performed, and a perforated part is mounted in a no-blow work bag attached to the perforator support member on the outer periphery of the pipe line. An airtight space is formed in the surroundings, and an operation for operating the drilling machine is performed in the airtight space.

  The present invention has been proposed to deal with such a situation. In other words, the sealing process for the perforated part in the existing lined lining can be performed in an active pipe state, and leakage through the perforated part of the lining layer is avoided by performing a reliable sealing process on the perforated part. It is an object of the present invention to be able to perform the sealing process of the pipeline perforated portion while ensuring the fluid supply to the downstream side of the pipeline.

  In order to achieve the above-described object, the present invention includes at least the following features.

  One is a method of sealing a pipe and a perforated portion of the lining layer for an existing lined pipe having a lining layer formed on the inner surface of the pipe, and the inside of the pipe from the outside of the pipe through the perforated part. A resin receiving member that expands after the insertion and faces the perimeter of the perforated portion inside the tube is inserted into the tube from the outside of the tube via the perforated portion, A resin receiving member installation step that is installed away from the surroundings; and while supplying the resin onto the resin receiving member, the resin receiving member is brought close to the inside of the tube of the perforated portion, and the resin receiving member is disposed around the inside of the tube of the perforated portion To form a resin-filled space around and inside the tube of the perforated part, and at the same time, fill the resin-filled space with the resin so that the entire periphery of the end of the perforated part is hermetically sealed with the resin. Having a resin filling step of covering The features.

  In addition, a perforated part sealing processing jig for sealing a perforated part of a pipe and a lining layer for an existing lined pipe having a lining layer formed on the inner surface of the pipe, the perforated part Can be inserted into the tube from the outside of the tube, and after the insertion, the diameter is expanded to face the perforation portion and the perimeter of the perforation portion in the tube, and the perimeter of the perforation portion is pressed to the perimeter of the tube and A resin receiving member that forms a resin filling space inside, a resin cylinder that has a resin supply port that is filled with resin and faces the perforated portion, and has an outer peripheral portion that closes the perforated portion, and a shaft of the resin cylinder A support shaft that is arranged along the direction and supports the resin receiving member, a sliding member that slides in the resin cylinder and pushes the resin in the resin cylinder from the resin supply port, and is supported by the sliding member The sliding member A threaded portion that is threadedly engaged with the supporting shaft, and the sliding shaft is slid and the resin in the resin cylinder is pushed out from the resin supply port by the tightening operation of the threaded portion. And the resin receiving member is brought close to the inside of the perforated portion in the tube.

  According to the present invention, the resin receiving member is inserted into the pipe from the outside of the pipe through the perforated portion, and the resin receiving member is placed away from the inside of the perforated portion of the pipe, and the resin is supplied onto the resin receiving member. The resin receiving member is brought close to the inner periphery of the tube of the perforated portion, and the resin receiving member is pressed to the inner periphery of the tube of the perforated portion, thereby forming a resin filling space in and around the inner periphery of the perforated portion. The resin was filled with resin so that the entire periphery of the end of the perforated part was hermetically covered with the resin.

  According to this, the gas filling does not occur in the resin filling space formed by the resin receiving member, and the edge of the perforated lining layer around the perforated part can be completely covered with the resin, and the perforated part can be surely provided. Sealing treatment can be performed. With such a feature, the present invention can avoid leakage through the perforated portion of the lining layer.

  In addition, since the resin receiving member can be inserted into the pipe from outside the pipe through the perforated part, the perforated part can be sealed even in a live pipe line by covering the perimeter of the perforated part with a no-blow work bag. Processing can be performed. As a result, it is possible to perform the sealing process of the perforated portion of the pipe line while ensuring the fluid supply to the downstream side of the pipe line.

  Furthermore, by using the punching portion sealing processing jig having the above-described characteristics, the step of supplying the resin to the resin receiving member and pressing the resin receiving member around the inside of the tube of the punching portion only by tightening the screw portion. Processes can be performed simultaneously. As a result, the work process can be simplified, and the sealing process of the perforated portion can be performed easily and quickly.

  The embodiment of the present invention is intended for an existing pipe line that has been subjected to a lining process. In the following explanation, a case where a seal hose is lined on the inner surface of the pipe will be described as an example, but as the lining process, a process in which a lining layer is formed on the inner surface of the pipe by a lining reverse sealing method, a resin lining method, or the like. Any process may be used.

  Then, after perforating such existing lined lining, or in the perforated part of the pipe and the lining layer while maintaining the active pipe state of the pipe with respect to the pipe having the perforated part formed in advance. Sealing treatment is performed between the lining layer and the pipe so that the fluid in the pipe does not leak. This sealing process includes a resin receiving member installation step in which a resin receiving member, which will be described later, is inserted from the perforated part and installed in the pipe, and the resin is supplied onto the resin receiving member so that the entire periphery of the end of the perforated part is sealed with resin. The resin filling process covering the surface is the main process.

  FIG. 2 is an explanatory view showing a resin receiving member installation step of the perforated portion sealing processing method according to the embodiment of the present invention, and FIG. 3 shows a resin filling step of the perforated portion sealing processing method according to the embodiment of the present invention. It is explanatory drawing shown. In the figure, a lining process of a seal hose P1 is performed on the inner surface of a pipe P, and a perforated portion P0 is formed in the pipe P and the seal hose P1.

  In the resin receiving member installation step, as shown in FIG. 2A, the resin receiving member 10 is inserted from the outside of the pipe into the pipe through the perforated portion P0, and as shown in FIG. The member 10 is set apart from the perimeter P2 of the perforated part P0.

  Further, in the resin filling step, as shown in FIG. 3A, while the resin R is being supplied onto the resin receiving member 10, the resin receiving member 10 is brought close to the inside of the tube of the perforated portion P0, and FIG. As shown in the figure, by pressing the resin receiving member 10 around the inside of the perforated portion P0, a resin filling space is formed around and inside the perforated portion P0, and at the same time, all the resin filling spaces are filled with the resin R. The entire circumference of the end of the perforated part P0 is airtightly covered with the resin R.

  According to this, when the resin R is supplied onto the resin receiving member 10, the resin receiving member 10 is opened, and as the resin receiving member 10 approaches the inner periphery of the perforated portion P0, the resin receiving member. The gas on 10 is sequentially expelled to the outside. When the resin receiving member 10 is pressed around the inside of the pipe of the perforated part P0 and a closed resin filling space is formed, all the gas on the resin receiving member 10 is expelled, and this closed resin filling space is completely discharged. It will be filled with resin R. That is, there is no gas accumulation in the resin filling space formed by the resin receiving member 10, and the end portion of the sealed hose P1 around the perforated portion P0 can be completely covered with the resin R. On the other hand, a reliable sealing process can be performed. As a result, it is possible to avoid an accident in which a gas enters between the seal hose P1 and the inner surface of the pipe line P through the perforated part P0 of the seal hose P1 to cause leakage.

  More specifically, the punching portion sealing processing method according to the embodiment of the present invention can be specifically executed by using the illustrated punching portion sealing processing jig 1. The punching portion sealing processing jig 1 includes a resin receiving member 10, a resin cylinder 20, a support shaft 11, a sliding member 21, and a screw portion 23 as main components.

  The resin receiving member 10 can be inserted into the pipe from the outside of the pipe through the perforated part P0, expands the diameter after insertion, faces the perforated part P0 and the perimeter of the pipe P2, and is pressed by the perimeter of the perforated part P2 of the pipe. Thus, a resin-filled space is formed in the inner periphery P2 of the perforated portion and inside thereof. More specifically, the resin receiving member 10 is formed of an elastically deformable plate material, and is provided with a sealing ring 12 surrounding the perforated portion P0 along the outer edge portion 10A. A resin-filled space is formed.

  The resin cylinder 20 is filled with resin and has a resin supply port 20A facing the perforated part P0 and an outer peripheral part 20B that closes the perforated part P0. A support shaft 11 that supports the resin receiving member 10 is disposed along the axial direction of the resin cylinder 20. A sliding member 21 is provided in the resin cylinder 20 to slide in the resin cylinder 20 and push out the resin R in the resin cylinder 20 from the resin supply port 20A. The screw portion 23 is screwed to the support shaft 11 supported by the sliding member 21 and penetrating the sliding member 21.

  By tightening the screw portion 23, the sliding member 21 is slid to push out the resin R in the resin cylinder 20 from the resin supply port 20A, and the support shaft 11 is pulled up to pull the resin receiving member 10 in the perforated portion. It is brought close to the inner circumference P2.

  The resin supply port 20 </ b> A of the resin cylinder 20 is closed with a porous member 22 impregnated and held with the resin R, and the resin R is supplied through the porous member 22 by sliding of the sliding member 21. The porous member 22 has a function of holding the resin R so that it does not go out of the resin supply port 20A until the screw portion 23 is tightened. When being compressed, the resin R flows out through the porous member 22 by this compression. As the porous member 22, a sponge obtained by foaming a plastic material such as urethane can be used.

  The sliding member 21 includes a piston member 21 </ b> A for extruding the resin R and a support plate 21 </ b> B that restricts the rotation of the support shaft 11. As the piston member 21 </ b> A, it is preferable to laminate the porous member as described above in addition to the plate material sliding in the resin cylinder 20. The support plate 21B is mounted to prevent the support shaft 11 from rotating when the screw portion 23 is tightened.

  When such a perforated portion sealing processing jig 1 is used, first, as a preparation step, the porous member 22 is inserted into the resin cylinder 20 and the resin supply port 20A is closed with the porous member 22, and the porous member 22 is filled. A support shaft 11 having a resin receiving member 10 attached to the lower end is inserted into the hole. And in the state which pushed the porous member 22 in the resin cylinder 20, resin R is poured on it. After a sufficient amount of resin R is loaded into the resin cylinder 20 for sealing, the support shaft 11 disposed along the axial direction of the resin cylinder 20 is passed through the central hole of the sliding member 21, A sliding member 21 is provided on the resin R in the resin cylinder 20. Then, the screw portion is screwed onto the support shaft 11 so that the support shaft 11 is supported by the sliding member 21.

  As shown in FIG. 2 (a), the resin receiving member installation step using such a perforated portion sealing processing jig 1 is performed while the perforated portion is deformed while the resin receiving member 10 formed of an elastically deformable plate material is deformed. Push into tube via P0. At this time, in order to perform work on the pipe in the live tube state, the punching portion sealing processing jig 1 is previously provided in a no-blow work bag (not shown) covering the punching portion P0, and the punching portion P0 is provided. After covering with the no-blow working bag, the perforated part P0 is opened, and the resin receiving member 10 is pushed into the pipe through the perforated part P0.

  After the resin receiving member 10 is pushed into the pipe, as shown in FIG. 2B, the outer peripheral portion 20B of the resin cylinder 20 is screwed into the perforated portion P0, and the perforated portion P0 is closed with the resin cylinder 20. At this time, the resin supply port 20A of the resin cylinder 20 faces the perforation part P0, and the resin receiving member 10 is separated from the pipe inner periphery P2 of the perforation part.

  In the resin filling step, as shown in FIG. 3A, in the state described above, the sliding member 21 is slid by the tightening operation of the screw portion 23, and the resin R in the resin cylinder 20 is moved to the resin supply port. While extruding from 20A, the support shaft 11 is pulled up, and the resin receiving member 10 is brought close to the inner periphery P2 of the perforated portion.

  According to this, as shown in FIG. 3 (a), the gas on the resin receiving member 10 is expelled outward in the process of pulling up the resin receiving member 10, and as shown in FIG. 3 (b). In a state where the sealing ring 12 of the resin receiving member 10 is pressed around the inside of the tube of the perforated portion P0, the resin filling space formed inside the sealing ring 12 is filled with only the resin R. In order to achieve such a state, the resin R supplied onto the resin receiving member 10 overflows before the sealing ring 12 of the resin receiving member 10 is pressed around the inside of the tube of the perforated part P0. The gas layer on the resin receiving member 10 needs to be completely expelled to the outside.

  After the resin filling step, the pipe P is refilled by covering the upper end portion of the resin cylinder 20 with a sealing cap (not shown) and further covering with an anti-corrosion cap.

  Such a perforated portion sealing processing method can complete the process while maintaining the active pipe state of the pipe line P by performing the work using the above-described no-blow work bag. Thereby, the sealing process of the perforated part P2 can be performed in a state where the fluid supply to the downstream side of the pipe line P is ensured. Further, by completely covering the periphery of the perforated part P2 with the resin R, it is possible to perform a reliable sealing process on the perforated part P2, and reliably avoid the leakage phenomenon through the perforated part of the seal hose P1. be able to.

  Further, by using the perforated part sealing processing jig 1 having the above-described characteristics, the resin receiving member 10 is supplied with the resin R and the perforated part P0 by simply tightening the screw part 23. The step of pressing around the inside of the tube can be performed simultaneously. As a result, the work process can be simplified, and the sealing process of the perforated portion can be performed easily and quickly.

It is explanatory drawing of a prior art. It is explanatory drawing which shows the piercing part sealing process construction method (resin receiving member installation process) and sealing process jig | tool of the existing lined pipe line which concern on one Embodiment of this invention. It is explanatory drawing which shows the piercing part sealing process method (resin filling process) and sealing process jig | tool of the existing lined pipeline which concerns on one Embodiment of this invention.

Explanation of symbols

1: Drilling part sealing processing jig,
10: Resin receiving member,
11: Support shaft,
12: sealing ring,
20: resin cylinder, 20A: resin supply port, 20B: outer periphery,
21: sliding member,
22: porous member,
23: Screw part,
P: pipeline,
P0: perforated part,
P1: Seal hose (lining layer),
R: Resin

Claims (10)

A method of sealing a perforated portion of a pipe and a lining layer for an existing line to be lined in which a lining layer is formed on the inner surface of the pipe,
A resin receiving member that can be inserted into the pipe from the outside of the tube through the perforated portion and expands after the insertion and faces the perimeter of the perforated portion and the inside of the pipe of the perforated portion is provided from the outside of the tube through the perforated portion. A resin receiving member installation step that is installed at a distance from the inner periphery of the perforated part.
While supplying the resin onto the resin receiving member, the resin receiving member is brought close to the inner periphery of the tube of the perforated part, and the resin receiving member is pressed against the inner periphery of the tube of the perforated part, thereby And a resin filling step of forming the resin filling space on the inner side and simultaneously filling the resin in all the resin filling space to airtightly cover the entire periphery of the end of the perforated part with the resin. Perforated part sealing method for lining existing pipelines. The resin filling step includes
The resin cylinder having a resin supply port facing the hole is closed with the hole, and a support shaft that supports the resin receiving member is disposed along the axial direction of the resin cylinder, and slides in the resin cylinder. The sliding member is slid by the tightening operation of the threaded portion in a state where the threaded portion that is screwed to the support shaft that has penetrated the sliding member is supported by the moving member, and the resin in the resin cylinder is 2. The perforated portion sealing process for an existing lined lining to be lined according to claim 1, wherein the support shaft is pulled up while being pushed out from a resin supply port to bring the resin receiving member close to the inside of the tube of the perforated portion. Construction method.   The resin supply port is closed by a porous member impregnated and held with the resin, and the resin is supplied through the porous member by sliding of the sliding member. The perforated part sealing treatment method for the existing lined lining described.   The said sliding member is provided with the piston member for extruding the said resin, and the support plate which controls the rotation of the said support shaft, Sealing the pierced part of the existing lining existing pipe line described in Claim 2 or 3 characterized by the above-mentioned. Processing method.   The resin receiving member is formed of an elastically deformable plate material, provided with a sealing ring surrounding the perforated portion along an outer edge portion, and the resin filling space is formed inside the sealing ring. The perforated part sealing processing method of the existing lined lining to be described in any one of Claims 1-4 characterized by the above-mentioned.   The said lining existing installation as described in any one of Claims 1-5 with which the said resin receiving member installation process is performed in the no-blow work bag which covers the said piercing | piercing part with respect to the pipe line of an active pipe state Pipeline perforation sealing method. A perforated part sealing processing jig for sealing a perforated part of a pipe and a lining layer for a lining existing pipe line in which a lining layer is formed on the inner surface of the pipe,
It can be inserted into the pipe from the outside of the pipe through the perforated part, and after the insertion, the diameter is increased and the perforated part and the perimeter of the perforated part are faced to each other. A resin receiving member that forms a resin-filled space around and inside the pipe;
A resin cylinder having a resin supply port facing the perforated part with resin loaded therein and an outer peripheral part closing the perforated part;
A support shaft disposed along the axial direction of the resin cylinder and supporting the resin receiving member;
A sliding member that slides in the resin cylinder and pushes out the resin in the resin cylinder from the resin supply port;
A threaded portion that is supported by the sliding member and screwed into the support shaft that penetrates the sliding member;
By tightening the screw portion, the sliding member is slid to push out the resin in the resin cylinder from the resin supply port, and the support shaft is lifted to bring the resin receiving member around the inside of the tube of the perforated portion. A perforated portion sealing processing jig for an existing pipeline to be lined, characterized in that they are close to each other.   The resin supply port is closed by a porous member impregnated and held with the resin, and the resin is supplied through the porous member by sliding of the sliding member. The perforated portion sealing processing jig for the existing lined pipeline to be described.   The said sliding member is provided with the piston member for extruding the said resin, and the support plate which controls the rotation of the said support shaft, The pierced part sealing of the existing lined pipe line described in Claim 7 or 8 characterized by the above-mentioned. Processing jig.   The resin receiving member is formed of an elastically deformable plate material, provided with a sealing ring surrounding the perforated portion along an outer edge portion, and a resin filling space is formed inside the sealing ring. The perforated part sealing processing jig of the existing pipe lined lining described in any one of Claims 7-9.

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