JP2007283571A - Pipeline regeneration method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipeline regeneration method which certainly cuts off the opening end of a pipeline to facilitate the regeneration of the pipeline, and drains dammed-up sewage to a downstream pipeline. <P>SOLUTION: A drain hose 27 for draining the sewage 45 dammed up by a cutting-off member 40 is inserted in a pipe lining material 1 as the pipe lining material 1 is inserted in the pipeline. When the curable resin infiltrated in the pipe lining material 1 is cured, the sewage 45 dammed up on the upstream side of the pipeline to be regenerated is discharged to the downstream part of the pipeline to be regenerated through the drain hose 27 in the pipe lining material. By this constitution, the sewage dammed up on the upstream side of the pipeline to be regenerated is easily drained and the smooth, and efficient regeneration of the pipeline not troubled by sewage is performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pipe line rehabilitation method, and more particularly to a pipe line rehabilitation method in which an open end of a pipe line is stopped to rehabilitate the pipe line.

  When pipes such as sewage pipes buried in the ground have deteriorated, a pipe rehabilitation method is known in which the inner circumference is lined to rehabilitate the pipe without digging out the pipe. ing.

  In this construction method, a pipe lining material formed by impregnating a curable resin into a tubular nonwoven fabric whose outer peripheral surface is coated with a highly airtight film is inserted into the pipe line while being reversed by fluid pressure, and this is inserted into the pipe line. The inner peripheral surface of the pipe is lined by pressing the inner peripheral surface and heating the pipe lining material while keeping this state to cure the curable resin impregnated therein (patent) Reference 1).

When lining the pipeline using such a construction method, if the sewage flows into the pipeline, good lining cannot be achieved, so a water stop member is placed upstream of the pipeline to be rehabilitated in advance to stop the sewage. Since then, the pipeline has been rehabilitated.
JP 2003-165158 A

  However, conventionally, in a pipeline with a large amount of sewage, there is a risk that the upstream pipeline will be filled with sewage that has been blocked by a water blocking member. The drainage hose was once lifted to the ground, led to a downstream sewer pipe through another manhole, and then drained there.

  The present invention has been made in view of the above problems, and reliably stops the open end of the pipeline to facilitate the rehabilitation of the pipeline, and easily drains the sewered water to the downstream pipeline. It is an object of the present invention to provide a pipeline rehabilitation method.

The present invention
A pipe rehabilitation method in which a tubular pipe lining material impregnated with a curable resin is inserted into a pipe, and the impregnated resin is cured to rehabilitate the pipe,
Stop the sewage flowing upstream of the pipeline to be rehabilitated by damming it with a water stop member,
Insert the drain hose to drain the sewage blocked by the water stop member into the pipe lining material as the pipe lining material is inserted,
When the pipe lining material has been inserted into the pipeline to be rehabilitated, the drainage hose inserted into the pipe lining material is guided outside the pipe lining material,
While the pipe lining material is expanded and pressed against the inner surface of the pipe line, the curable resin impregnated in the pipe lining material is cured, and the sewage blocked in the upstream of the pipe line to be rehabilitated is put into the pipe lining material. It is characterized by draining downstream of the pipeline to be rehabilitated via the inserted drain hose.

  In the present invention, the drainage hose for draining the sewage blocked by the water blocking member is inserted into the pipe lining material as the pipe lining material is inserted, and the sewage blocked by the upstream line to be rehabilitated is drained. Since the water is drained downstream of the pipeline to be rehabilitated through the drainage hose inserted in the pipe lining material, drainage of the sewage blocked upstream of the pipeline to be rehabilitated is facilitated. Smooth and efficient pipeline rehabilitation without any problems is possible.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

  In FIG. 1, a reversing machine 10 for reversing a pipe lining material 1 for rehabilitating a pipeline 3 such as a sewage pipe is attached to a loading platform of a truck 11 via a support plate 12 and vertical adjustment mechanisms 13 and 14. The state of being moved to a work site with a manhole 2 is shown. The reversing machine 10 has an airtight sealed storage container 20 for storing the pipe lining material 1, and a mounting pipe 60 is connected to the storage container 20 via a guide portion 22 having a plurality of guide rollers 21. Removably attached. The guide nozzle 30 is attached to the mounting pipe 60, and the guide nozzle 30 extends in the vertical direction, and a reverse nozzle 33 bent through a guide pipe 31, an adjustment pipe 34, and a guide pipe 32 is provided at a lower end thereof. Removably attached.

  The vertical position of the reversing nozzle 33 can be adjusted by adjusting the positions of the guide pipes 31 and 32 with the adjusting pipe 34 according to the underground depth in which the pipe 3 is buried.

  As shown in FIGS. 5 and 6, the mounting pipe 60 is a tubular member having upper and lower flanges 60 a and 60 b, and the flange 60 a is a flange 80 a of the airtight pressure lid 80 through a plurality of clamps 73. The flange 60b of the attachment tube 60 is airtightly attached to the flange 30c of the nozzle cone portion 30b via a plurality of bolt and nut type fixing means 72.

  Further, ducts 61 and 62 capable of guiding a drain hose 27 and a steam hose 28, which will be described later, to the outside are attached to the side of the attachment pipe 60, and an air supply hose (not shown) for supplying compressed air is attached. A mounting hole 63 and a mounting hole 64 for attaching an air exhaust hose (not shown) for discharging air are formed. The ducts 61 and 62 and the mounting holes 63 and 64 are hermetically sealed with a cap or the like before each hose is attached.

  As will be described later, when the attachment tube 60 and the storage container 20 (the guide portion 22 is also a part of the storage container 20) are separated, the pressure lid 80 is attached to the upper portion of the attachment tube 60 in an airtight manner.

  The reversing nozzle 33 includes a nozzle opening 33a with a cylindrical tip to which the pipe lining material 1 is attached, a columnar part 33c whose opening direction is substantially perpendicular to the opening 33a, and a nozzle opening 33a. It is comprised from the bending part 33b which couple | bonds the cylindrical part 33c. The reversing nozzle 33 is disposed such that the nozzle opening 33 a faces the opening 3 a of the pipe 3, and the nozzle axis is substantially coincident with the direction (horizontal direction) in which the pipe 3 extends. The whole composed of the reversing nozzle 33, the guide tubes 32 and 31, the adjusting tube 34, the guide nozzle 30, the mounting tube 60, the guide portion 22, and the storage container 20 is hermetically sealed except that the nozzle opening 33a is open. It has a structure.

  Bearing portions 25 that rotatably support the reel 24 are attached to both sides of the storage container 20. As shown in FIGS. 2 (A) and 2 (B), the reel 24 winds the drain hose 27 and the steam hose 28 and is connected to the pipe lining material 1 via the connecting tools 29 and 29 '. 1 and is driven to rotate clockwise as viewed in FIG. 1 by an electric motor (not shown), whereby the drain hose 27, steam hose 28, and pipe lining material 1 are reels. 24 is wound into a roll. On the other hand, when the pipe lining material 1 or the like wound around the reel 24 is pulled out from the storage container 20, as will be described later, the reel 24 rotates in reverse by the torque acting on the reel 24, and the electric motor rotates. It is made to operate | move as a generator, and braking is applied to drawers, such as a pipe lining material.

  Further, a duct 26 for sending fluid pressure (compressed air) for reversing the tube lining material 1 to the storage container 20 is attached to the storage container 20.

  The tube lining material 1 wound around the reel 24 is a known tubular tube lining material, and an uncured liquid thermosetting resin is impregnated into a tubular resin absorbent material whose outer surface is hermetically covered with a plastic film. Composed at least. In addition, polyethylene, vinyl chloride, vinylon, polyurethane, nylon, polypropylene, polyethylene-nylon copolymer, etc. are used as the plastic film, and non-woven fabric such as polyester, nylon, acrylic, vinylon is used as the tubular resin absorbent. It is done. As the uncured liquid curable resin impregnated in the tubular resin adsorbent, a thermosetting resin such as an unsaturated polyester resin or an epoxy resin is used.

  The sewage 45 flows upstream of the pipe line 3 to be rehabilitated, and the sewage 45 is blocked by a water stop member 40 attached so as to close the opening 3 b of the pipe line 3. The water stop member 40 is provided with a drain pipe 41 capable of draining the sewered sewage 45 to the outside, and the sewage flowing through the drain pipe 41 is pumped out by a drain pump 42 having a diaphragm structure and is passed through a switching valve 43. Guided to drain pipe 44. The other end of the drainage pipe 44 is airtightly attached to the bent portion 33 b of the reversing nozzle 33 so that the sewage pumped out by the drainage pump 42 can be drained into the reversing nozzle 33. The switching valve 43 is provided with a discharge port 43a. When the switching valve 43 is switched, the sewage is guided into the drainage hose 27 connected to the discharge port 43a of the switching valve 43 as described later.

  Below, the process of repairing the pipe line 3 is demonstrated.

  The reversing machine 10 is moved so that the guide nozzle 30 is on the manhole 2 in a state where the drain hose 27, the steam hose 28 and the pipe lining material 1 are wound around the reel 24 of the storage container 20. In the reversing machine 10, a part of the guide nozzle 30 is supported by the scaffold 4, and guide pipes 31 and 32 are attached to the lower end of the guide nozzle 30 via an adjustment pipe 34. Then, the reversing nozzle 33 is attached so that the nozzle axis is oriented in the direction in which the pipe 3 extends, and the nozzle opening 33a is aligned with the opening 3a of the pipe 3 to be rehabilitated.

  Prior to the reverse insertion of the pipe lining material, the opening 3 b of the pipe line 3 is closed by the water stop member 40 in order to stop the sewage 45 flowing upstream of the pipe line 3. The drain pipe 41 is connected to the drain pump 43, connected to the drain pipe 44 via the switching valve 43, and the other end of the drain pipe 44 is airtightly coupled to the bent portion 33b of the reversing nozzle 33.

  Subsequently, the other end 1a of the tube lining material 1 is guided to the nozzle opening 33a of the reversing nozzle 33, folded back to the outside, and attached to the outer periphery of the nozzle opening 33a by a band 35 or the like.

  Compressed air is supplied into the storage container 20 through the duct 26, and the fluid pressure (compressed air pressure) acts on the folded portion of the pipe lining material 1, whereby the pipe lining material 1 is rewound from the reel 24 and stored. It is pulled out from the container 20 and is inserted vertically downward into the manhole 2 without being inverted, as indicated by the dotted line. At this time, the electric motor operates as a generator, and the reverse rotation of the reel 24, that is, the withdrawal of the pipe lining material 1 is braked.

  The pipe lining material 1 that is inserted into the manhole 2 without being inverted is bent from the vertical direction to the horizontal direction and reaches the nozzle opening 33a, where it is inverted by the action of fluid pressure and is inverted and inserted into the pipe line 3. The

  If the water level of the sewage 45 blocked by the water stop member 40 may rise and become full at the time of the reverse insertion, the drain pump 42 is driven and the sewage is passed through the switching valve 43 and the drain pipe 44. Pumped into the reversing nozzle 33 and discharged into the reversed tube lining material 1. Thereby, discharge | emission of the sewage during pipe lining material inversion can be performed smoothly.

  The drainage hose 27 and the steam hose 28 connected to the end of the pipe lining material 1 are inserted into the pipe lining material 1 as the pipe lining material 1 is inverted and inserted into the pipeline. FIG. 3 shows a state in which the pipe lining material 1 is inverted and inserted into the pipe line 3 to be repaired over a predetermined length and inserted into the next manhole 2 'located downstream. In this state, the drain hose 27 is also inserted into the pipe lining material up to the next manhole 2 'region.

  Thus, when the pipe lining material is inverted and inserted over a predetermined length into the pipeline 3 to be repaired, the tip of the pipe lining material 1 is cut and cut with a sealing cap 45 having a discharge port 45a. Seal the part.

  Subsequently, after separating the mounting tube 60 and the storage container 20, the terminal end of the drainage hose 27 wound around the reel 24 is guided to the outside through the duct 61 of the mounting tube 60, and the discharge port 43 a of the switching valve 43. Connect to. Further, the tip of the drain hose 27 is guided to the outside of the pipe lining material 1 through the discharge port 45 a of the sealing cap 45. Further, the end portion of the steam hose 28 wound around the reel 24 is led to the outside through the duct 62 of the mounting pipe 60 and connected to a steam supply source (not shown), and the pressure lid 80 is connected to the upper part of the mounting pipe 60. Install airtightly. This state is illustrated in FIG.

  In this state, when the switching valve 43 is switched and the drain pump 42 is driven, the sewage 45 blocked by the water stop member 40 is downstream of the pipeline to be rehabilitated via the drain hose 27 in the pipe lining material 1. Drained. Therefore, the upstream of the pipeline to be rehabilitated is not filled with sewage, and the pipeline can be repaired smoothly. Further, since the drainage is performed through the drainage hose 27 guided into the inverted pipe lining material, the drainage work is facilitated.

  Further, the pressure lining 80, the mounting pipe 60, the guide nozzle 30, the guide pipes 31, 32, the adjustment pipe 34, the reversing nozzle 33, and the pipe lining material 1 whose ends are sealed with the sealing cap 45 have a sealed structure as a whole. Therefore, when compressed air is supplied from the attachment pipe 60 to the inside, the pipe lining material 1 expands and is pressed against the inner wall surface of the pipe line 3.

  In this state, when steam is supplied through the steam hose 28, the steam is sprayed on the inverted pipe lining material 1 in a mist state through a number of jets (not shown) provided in the steam hose 28. . As a result, the pipe lining material 1 is heated, and the thermosetting resin impregnated in the pipe lining material 1 is cured by heat, so that the inner surface of the pipe line 3 is lined and repaired by the cured pipe lining material 1. The After the pipe lining material 1 is cured, air is discharged to the outside through the air discharge hole.

  In addition, since the window 81 provided with the transparent acrylic board 82 is attached to the upper part of the pressure lid | cover 80, the operator can confirm the internal state in operation | work through this window.

  Moreover, the heating and curing of the pipe lining material can be performed by spraying hot water in a mist state instead of steam or by showering hot water.

  In addition, as shown by the phantom line in FIG. 6, ducts 65 and 66 with different diameters may be attached to the attachment pipe 60 to attach heat medium supply (discharge) hoses with different diameters.

  Further, the compressed air for reversing and inserting the pipe lining material is not supplied from the duct 26 provided in the storage container 20 but is supplied through an air supply hose attached to the attachment hole 63 formed in the attachment pipe 60. You may do it.

It is explanatory drawing which showed the state which reversely inserts a pipe lining material from a manhole to a pipe line. (A) is a top view of the drainage hose, steam hose, and pipe lining material wound around the reel, and (B) is a side view thereof. It is explanatory drawing which showed the state when the reverse insertion of a pipe lining material was completed. It is explanatory drawing which showed the state which drains sewage and hardens a pipe lining material after the reverse insertion of a pipe lining material is completed. It is a perspective view which shows the external appearance of an attachment pipe and a pressure lid. It is a vertical sectional view of a mounting tube and a pressure lid.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe lining material 2, 2 'Manhole 3 Pipe line 20 Storage container 27 Drain hose 28 Steam hose 33 Invert nozzle 40 Water stop member 42 Drain pump 60 Mounting pipe 80 Pressure lid

Claims (7)

A pipe rehabilitation method in which a tubular pipe lining material impregnated with a curable resin is inserted into a pipe, and the impregnated resin is cured to rehabilitate the pipe,
Stop the sewage flowing upstream of the pipeline to be rehabilitated by damming it with a water stop member,
Insert the drain hose to drain the sewage blocked by the water stop member into the pipe lining material as the pipe lining material is inserted,
When the pipe lining material has been inserted into the pipeline to be rehabilitated, the drainage hose inserted into the pipe lining material is guided outside the pipe lining material,
While the pipe lining material is expanded and pressed against the inner surface of the pipe line, the curable resin impregnated in the pipe lining material is cured, and the sewage blocked in the upstream of the pipe line to be rehabilitated is put into the pipe lining material. A pipeline rehabilitation method characterized by draining downstream of a pipeline to be rehabilitated through a drainage hose inserted.   The pipe retreading method according to claim 1, wherein the pipe lining material is inverted through an inversion nozzle and inserted into the pipe.   A drain hose is connected to the end of the pipe lining material, and the drain hose connected to the end of the pipe lining material is inserted into the inverted pipe lining as the pipe lining material is inverted and inserted into the pipe line. The pipeline rehabilitation method according to claim 2.   When the drainage hose and the pipe lining material are wound up using an electric motor, and the pipe lining material and the drainage hose are inserted into the pipeline, the motor is functioned as a generator, the pipe lining material and the drainage hose are rewound, and the winding is performed. 4. The pipeline rehabilitation method according to claim 3, wherein the return is braked.   The reversing nozzle is disposed at a pipeline position to be rehabilitated, and the sewage blocked by a water stop member is drained into a reversed pipe lining material through a drain pipe attached to the reversing nozzle. Item 5. The pipeline rehabilitation method according to any one of Items 2 to 4.   6. The pipeline rehabilitation method according to claim 5, wherein drainage by the drainage pipe and drainage by a drainage hose can be switched.   The pipe rehabilitation method according to claim 5 or 6, wherein drainage by the drainage pipe is performed at the time of reverse insertion of the pipe lining material, and drainage by the drainage hose is performed after the reverse insertion of the pipe lining material is completed. .

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