JP5291689B2 - Pipe lining material reversal method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for reversing a lining material capable of smoothly reversing the pipe lining material with little drawing resistance of the pipe lining material in reversing the pipe lining material. <P>SOLUTION: The device for reversing the lining material includes a storage container 10 for storing the pipe lining material, in which a reel 22 for winding the pipe lining material 1 is arranged inside and an opening for passing the pipe lining material therethrough is formed. The opening of the storage container is opened for winding the pipe lining material onto the reel to be stored in the storage container, and the pipe lining material stored in the storage container is introduced to a reversing nozzle 40 via a conducting pipe 41 connected to the opening of the storage container. This constitution enables the smooth reversing of the pipe lining material with little drawing resistance of the pipe lining material. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention, tubular liner reversal how, More particularly, the tubular liner reversal of how to reverse the pipe liner bag for repairing the existing pipe is subjected to lining on the inner surface of the existing pipe dilapidated It is about.

  When existing pipes such as sewage pipes, gas pipes, communication cable pipes, and power cable pipes buried in the ground become obsolete, the existing pipes are lined on the inner surface without being dug out of the ground. A pipe lining method for repairing pipes has been proposed and is already in practical use.

  As one of the above-mentioned pipe lining methods, a pipe lining material in which an uncured liquid curable resin is impregnated into a tubular resin adsorbent whose outer surface is hermetically coated with a plastic film is known. In this method, after the pipe lining material is inverted and inserted into the pipe line by the fluid pressure using the lining reversing device, the pipe lining material is expanded by the fluid pressure and pressed to the inner surface of the pipe line. The curable resin impregnated in the tube lining material is cured.

  Normally, the tube lining material is stored in a closed container in a flat and folded state, and one end of the tube lining material stored in the sealed container is folded outward and the opening of the reversing nozzle connected to the sealed container is opened. It is attached to the outer periphery of the end, and is inserted into the conduit while being reversed by applying fluid pressure in the sealed container (Patent Document 1).

JP 2003-165158 A

  However, in the conventional lining material reversing device, since the pipe lining material before reversal is folded and stored in the storage container, there is a drawback that a large reversing pressure is required because of a large resistance to be pulled out during reversal.

  In addition, since the pipe lining material is folded and stored, the upper pipe lining material folded according to the pull-out amount fluctuates up and down at the time of pull-out, and there is a problem that the pull-out is not performed smoothly.

The present invention is intended to solve such problems, when reversal of the pipe lining material, the tubular liner reversal how that can be smoothly reversed the reduced pipe liner bag is drawing resistance of the pipe lining material to The issue is to provide.

The present invention also provides:
A pipe lining material reversal method for reversing and inserting a pipe lining material into a pipeline,
A rotating body around which the pipe lining material is wound, and opening the opening of the storage container for storing the pipe lining material in which the opening through which the pipe lining material passes is formed;
The pipe lining material is wound around the rotating body of the storage container through the opened opening, and the pipe lining material is stored in the storage container.
A conduit is connected to the opening of the storage container, and the pipe lining material stored in the storage container is guided to the reversing nozzle through the opening and the conduit connected to the opening ;
The tube lining material is reversed through the reversing nozzle.

In the present invention, has a rotating body pipe lining material is wound therein, provided the container for accommodating the pipe-lining material having an opening formed to the pipe-lining material upon withdrawal of the pipe lining material is passed, the tube Since the opening is opened when the lining material is wound around the rotating body in the storage container, the pipe lining material is guided into the storage container through the opening through which the pipe lining material is drawn. Can

It is the perspective view shown in the state which mounted the lining material inversion apparatus based on this invention on the track | truck. It is a front view of a lining material reversing device. It is a side view of a lining material reversing device. It is a perspective view which shows the pipe lining material wound up by roll shape. It is explanatory drawing which showed the process in which a pipe lining material is accommodated in a storage container. It is explanatory drawing which showed the state which inverts a pipe lining material and inserts into an existing pipe. It is the side view which showed the state which winds up pipe lining material juxtaposed. It is a cross-sectional view of a pipe lining material. (A) is the side view which shows the example which connected the hose to the edge part of pipe lining material, (B) is the top view. It is explanatory drawing which shows the state which the reverse insertion to the existing pipe of the pipe lining material was completed.

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

  FIGS. 1 to 3 show the configuration of the lining material reversing device. Reference numeral 10 denotes a sealed storage container for storing the pipe lining material, which is usually as shown in FIG. They are attached to the truck bed via the support plates 11 and 12 and moved to the work site. The support plate 12 is provided with horizontally extending rib structures 12a and 12b for reinforcing the support plate. The support plate 11 is also provided with similar rib structures 11a and 11b (FIG. 3). Further, the four corners of the storage container 10 are provided with vertical adjustment mechanisms 13, 14, and 15 (the remaining one is not shown because it cannot be seen), so that the storage container 10 can be held horizontally. It is like that.

  A reversing nozzle 40 is detachably attached to the storage container 10 via a conduit 41 having a plurality of guide rollers 42. The reversing nozzle 40 includes a cylindrical nozzle portion 40a and a conical portion 40b attached to the nozzle portion 40a in an airtight manner. One end of a conduit 41 is similarly attached to the conical portion 40b in an airtight manner. A flange 41a is fixed to the opposite end of the reversing nozzle. The flange 41a and the flange 16a attached to the side pipe 16 extending to the side of the storage container 10 can be hermetically connected to each other via a fixing means such as a plurality of bolts and nuts. Is attached to the storage container 10 through the conduit 41 while maintaining a sealed structure.

  Further, on both side portions of the storage container 10, bearing portions 25 and 26 for rotatably supporting a rotating body 22 (hereinafter described as a reel) such as a spool and a reel are attached. The reel 22 is used for winding the pipe lining material 1 in a roll shape, and as shown in FIGS. 3 and 4, small diameter shafts 22b and 22d rotatably supported by bearing portions 25 and 26, respectively, The ring plate 23 having the spokes 23a is fixed to one end of the large diameter shaft 22c, and the ring plate 24 having the spokes 24a is fixed to the other end of the shaft 22c. It is slidably mounted in the direction.

  A connecting hole 22a is formed in the small-diameter shaft 22b of the reel 22, and the shaft 21a of the DC electric motor 21 is connected to the connecting hole 22a. The electric motor 21 is housed in the motor drive unit 20, and when the electric motor 21 is driven, the reel 22 rotates clockwise as viewed in FIG. 4, whereby the tube lining material 1 rolls on the reel 22. Rolled up into a shape. At this time, the ring plate 24 is moved along the large-diameter shaft 22c, and its position is adjusted to a position that matches the winding width of the pipe lining material 1, thereby ensuring the winding of the pipe lining material.

  Further, when the pipe lining material 1 wound around the reel 22 is pulled out of the storage container and reversed as will be described later, the reel 22 reversely rotates due to the torque acting on the reel 22, and the electric motor 21 can be rotated to operate as a generator, and the pipe lining material can be braked.

  Further, ducts 33 and 34 for sending fluid pressure (compressed air) for reversing the pipe lining material 1 to the storage container are attached to the storage container 10 on the left and right sides. The work door 30 that can be opened and closed is airtightly attached, and the operator can inspect the inside of the storage container 10 by opening the door by pulling the handle 31.

  The pipe lining material 1 wound around the reel is a known pipe lining material, and as shown in FIG. 8, the tubular resin adsorbent 1c whose outer surface is hermetically covered with a plastic film 1b is uncured. It is constructed by impregnating a liquid curable resin. As the plastic film 1b, a film of polyethylene, vinyl chloride, vinylon, polyurethane, nylon, polypropylene, polyethylene-nylon copolymer or the like is used. As the tubular resin adsorbent 1c, a nonwoven fabric such as polyester, nylon, acrylic, vinylon or the like. Is used. Further, as the uncured liquid curable resin impregnated in the tubular resin adsorbent 1c, a thermosetting resin such as an unsaturated polyester resin or an epoxy resin is used.

  In such a configuration, the reversing device is normally loaded on a truck, and when the pipe lining material is stored in the storage container 10, the flange 41a of the conduit 41 and the flange 16a of the side pipe 16 of the storage container 10 are fixed. The conduit 41 and the reversing nozzle 40 connected thereto are removed from the storage container 10 using a crane (not shown). 5A, one end of the tube lining material 1 is fixed to the reel 22 from the opening, and the electric motor 21 is driven by the DC power source 45. As shown in FIG. The reel 22 rotates in the clockwise direction, and the tube lining material 1 is flattened and wound around the reel 22 in a roll shape. When the pipe lining material 1 is wound up until it has substantially the same diameter as the ring plates 23 and 24, the driving of the electric motor 21 is stopped.

  After that, as shown in FIG. 5B, the conduit 41 and the reversing nozzle 40 are attached to the storage container 10 by fixing the flanges 41a and 16a. Then, one end 1a of the pipe lining material 1 is guided near the opening of the reversing nozzle 40, folded back to the outside as shown, and airtightly attached to the outer periphery of the opening end of the reversing nozzle 40 by a band 48.

  Such storage of the tube lining material 1 in the storage container 10 and attachment of the tube lining material 1 to the reversing nozzle 40 can be performed at the work site or at a stage before heading to the work site.

  When rehabilitating existing pipes such as sewers and communication cable pipes using such a reversing device, as shown in FIG. 6, the reversing device is moved near the manhole 50 and remains on the truck. The reversing nozzle 40 is disposed at a position facing the manhole 50 in the vertical direction.

  In this state, the compressed air source 43 is driven, and compressed air is supplied into the storage container 10 via the valve 33 via the duct 33 (34). Since the storage container 10 is in a hermetically sealed state up to the conduit 41 and the reversing nozzle 40, the compressed air is folded back to the opening end of the reversing nozzle 40 and attached to the folded portion of the pipe lining material 1. This also causes the tube lining material 1 to be reversed and moved into the manhole 50.

  By the action of the fluid pressure (compressed air pressure), the tube lining material 1 is unwound from the reel 22 and pulled out from the storage container 10, reversed by the reversing nozzle 40 and inserted into the manhole 50. At this time, when the reel 22 is rotated in reverse by pulling out the pipe lining material, the shaft 21a of the electric motor 21 connected to the reel 22 is rotated. Therefore, the electric motor 21 operates as a generator, and the reel 22 The reverse rotation, that is, the drawing of the pipe lining material 1 is braked. The electric energy generated by the electric motor is consumed by a load 49 such as a resistor. Further, regenerative braking may be applied by returning the electric energy generated by the electric motor to the power source 45. In this case, if necessary, the electric motor is connected to the power source via a resistor to reduce the rotational force in the winding direction of the electric motor and prevent the loss of the drawing force of the pipe lining material.

  Since the braking force increases as the pulling speed of the pipe lining material 1 increases, the pipe lining material 1 is pulled out at a substantially constant speed. However, as shown in FIG. 23 (24) is measured, the throttle amount of the valve 44 is changed by the actuator 47 according to the rotational speed, the amount of compressed air introduced into the storage container 10 is adjusted, and the pressure is adjusted. Good. Thereby, for example, when the rotational speed becomes larger than a predetermined value, the amount of compressed air can be reduced by narrowing the valve 44 to reduce the rotational speed. In addition, since the barometer 36 is attached to the storage container 10, the amount of throttle of the valve 44 can be adjusted according to the barometric pressure of the barometer to adjust the compressed air pressure.

  As described above, when compressed air is supplied into the storage container 10, the pipe lining material 1 descends the manhole 50 while being inverted, and the direction thereof is leveled by the bent pipe 51 and is sequentially inserted into the existing pipe 52. Is done. Then, the pipe lining material 1 inverted and inserted into the existing pipe 52 is heated with warm water or steam, and the thermosetting resin impregnated in the pipe lining material 1 is cured by heat. The inner surface is lined and repaired by the hardened tube lining material 1.

  Note that the pipe lining material 1 has a winding width that does not become the full reel width as shown in FIG. 4 according to the pipe diameter of the existing pipe to be repaired, but when the pipe diameter is small. Becomes narrow. Therefore, as shown in FIG. 7, the pipe lining material may be wound up in the form of two juxtaposed on the reel.

  In the configuration of FIG. 7, a ring plate 28 having the same configuration as the ring plates 23 and 24 is provided, and the tube lining material 1 ′ is wound between the ring plates 24 and 28 until the winding diameter is approximately the diameter of the ring plate. Then, move it to the left and move it to the ring plate 23 and wind it up. When pulling out, the pipe lining material 1 'is pulled out from the left pipe lining material 1', and when all of the pipe lining material 1 'is pulled out, the pipe lining material 1' wound up on the right side is pulled out. With such a configuration, the amount of pipe lining material stored in the storage container 10 can be increased.

  FIG. 9 shows another embodiment. The end of the tube lining material 1 shown in FIG. 8 opposite to the reversing nozzle is hermetically sealed, and the opposite end 1d of the tube lining material 1 is connected to hot water via connectors 60 and 61. A hose 62 for supplying a heat medium such as steam is connected. The hose 62 is wound around the large diameter shaft 22c of the reel 22 by the electric motor 21, and the tube lining material 1 is wound around the large diameter shaft 22c of the reel 22 after the hose 62 is wound up.

  In this embodiment, even when the pipe lining material 1 is reversed and inserted, all of the pipe lining material 1 is unwound from the reel 22, and even if the end 1 d of the pipe lining 1 is detached from the reel 22, the end 1 d Since the hose 62 is connected to the hose 62, the hose 62 is unwound, and the reel 22 rotates in reverse, so that the electric motor 21 still operates as a generator and brakes the drawer of the pipe lining material 1. You can hang it.

  FIG. 10 shows a state where the reverse insertion of the pipe lining material 1 into the existing pipe 52 is completed, and the hose 62 is rewound until the end 1 d of the pipe lining material 1 reaches the final end of the existing pipe 52. Therefore, the drawing of the pipe lining material can be stabilized until the inverted insertion is completed. For this reason, the hose 62 is in a state where the hose 62 is wound around the reel 22 when the end 1d of the pipe lining material 1 reaches the final end of the existing pipe 52 as shown in FIG. Designed to be as long as it remains.

  When the reverse insertion of the pipe lining material 1 into the existing pipe 52 is completed, hot water or steam is supplied from the reel side end of the hose 62, thereby heating the thermosetting resin in the pipe lining material reversely inserted. Then, the existing pipe 52 is repaired. The tube lining material 1 is cured by supplying hot water or steam from the tip of the hose 62, that is, the end 1d of the tube lining material 1, or a plurality of injection ports are provided in the hose 62. Hot water or steam is ejected as a mist state from the injection port, or hot water is showered from the injection port.

DESCRIPTION OF SYMBOLS 1, 1 'pipe lining material 10 Storage container 21 Electric motor 22 Reel 40 Reverse nozzle 45 Electric motor

Claims (1)

A pipe lining material reversal method for reversing and inserting a pipe lining material into a pipeline,
A rotating body around which the pipe lining material is wound, and opening the opening of the storage container for storing the pipe lining material in which the opening through which the pipe lining material passes is formed;
The pipe lining material is wound around the rotating body of the storage container through the opened opening, and the pipe lining material is stored in the storage container.
A conduit is connected to the opening of the storage container, and the pipe lining material stored in the storage container is guided to the reversing nozzle through the opening and the conduit connected to the opening;
A pipe lining material reversal method, wherein the pipe lining material is reversed through the reversing nozzle.

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