JP2019065985A - Heating device - Google Patents

Abstract

To provide a heating device which heats a hardening resin, which infiltrates into a lining material and facilitates hardening through heating, and sufficiently facilitates the hardening of the hardening resin infiltrating into the lining material.SOLUTION: A heating device includes: a heating heater (an electric heating mechanism) which is inserted into a space enclosed by an inner peripheral surface of a cylindrical lining material infiltrated with a hardening resin which facilitates hardening through heating; a hose 52 which is connected to the heating heater and supplies a fluid (air) to the heating heater from the outside of the space; and a discharge port 515a which discharges the fluid supplied from the hose 52 and heated by the heating heater to an interior of the space.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a heating device for heating a curable resin which is impregnated with a lining material and whose curing is accelerated by heating.

  There are pipelines buried in the ground, such as underground pipelines containing sewage pipes and underground power cables containing power cables. In this pipe line, a crack or a joint portion may be separated to cause a gap due to an earthquake, aging, or the like, or a joint portion may be displaced to cause a step. In addition, even when the pipe line is newly laid, a gap or a step may be generated in the joint portion even if it is not deteriorated. For example, in the case of newly laying a mounting pipe (branch pipe) branched from the main pipe, a gap or a step may be generated in the connection portion between the main pipe and the mounting pipe.

  When repairing a pipe line in which such cracks and gaps exist, it is preferable to carry out non-cut cutting from the viewpoint of reducing repair costs and minimizing traffic problems. Therefore, a technique has been proposed in which a cylindrical lining material impregnated with a curable resin whose curing is accelerated by heating is pressed against the inner peripheral surface of the pipe to perform lining (for example, Patent Document 1).

  In the pipeline repair described in this patent document 1, a tubular lining impregnated with a thermosetting resin is used to line the attachment tube connecting the main pipe and a weir formed by digging about 1 m from the ground surface, for example. The material is reversely inserted into the mounting pipe from the inlet on the side of the mounting pipe by compressed air. The tip of the reversely inserted cylindrical lining material reaches the connecting portion of the main pipe and the mounting pipe, and the outlet of the heat-resistant hose connected from the boiler on the ground is located inside thereof. Then, heated air is blown out from the outlet through a heater on the ground, and the heated air is supplied to the space surrounded by the inner peripheral surface of the reversely inserted cylindrical lining material, and the lining material is placed in the inside of the pipeline. While pressed against the circumferential surface, the curing of the thermosetting resin impregnated in the lining material is promoted by the heat of the heated air.

Japanese Patent Application Laid-Open No. 06-71753

  However, the total length of the mounting tube can be up to 10 m, and the length of the heat-resistant hose is longer. The heated air, which has passed through a heat-resistant hose of 10 m or more, is considerably reduced in temperature when blown out from the outlet located at the tip of the space, and curing of the thermosetting resin impregnated in the lining material The problem that it can not be promoted sufficiently has been confirmed. For example, even if the air is heated to 200 ° C. by a boiler installed on the ground and then supplied, the heated air blown out from the outlet located at the tip of the space may be lowered to 30 ° C. Has been reported.

  An object of this invention is to provide the heating apparatus which can fully accelerate | stimulate hardening of the curable resin in which the lining material was impregnated in view of the said situation.

The heating device of the present invention which solves the above object is
A heater inserted in a space surrounded by the inner circumferential surface of a cylindrical lining material impregnated with a curable resin whose curing is accelerated by heating;
A hose connected to the heater and supplying fluid from outside the space to the heater;
And a discharge port for discharging the fluid supplied from the hose and heated by the heater into the space.

According to the heating apparatus of the present invention, the heater is inserted into the space. In the space, the heater and the discharge port can be brought close to each other, and the fluid immediately after being heated is discharged from the discharge port to sufficiently accelerate curing of the curable resin impregnated in the lining material. The curable resin may be a resin which does not cure at normal temperature and does not cure if it is not heated, or may be a resin which cures even at normal temperature but which accelerates the cure by heating. Moreover, the said lining material is what is called a bottomed cylindrical lining material, and the front-end is closing. On the other hand, the rear end may be closed or open. Also, the fluid may be air, water or steam. Furthermore, the heater and the discharge port may be adjacent to each other, only a part of them may overlap, or all of them may overlap.

  Preferably, the discharge port is covered by a mesh member at an interval from the discharge port.

  A high temperature fluid can be discharged from the discharge port, and if the discharge port directly contacts the inner peripheral surface of the lining material, the inner peripheral surface may be damaged by heat, The mesh member is provided to prevent the discharge port from directly contacting the inner peripheral surface of the lining material.

Also, a sliding member sliding on the inner peripheral surface of the lining material is provided,
The heater is inserted into the space by the sliding member sliding on the inner circumferential surface of the lining material,
The sliding member may be in a mode in which the distance to the discharge port remains constant.

  According to this aspect, the heater can be easily slid into the space by the sliding member, and the sliding member is not a complicated mechanism but suitable for reduction in size and weight. That is, three sliding members are provided at intervals of 120 degrees in the circumferential direction or four at intervals of 90 degrees around the discharge port, and each of the three or four sliding members is the discharge port The distance is changed, and the outer diameter obtained by connecting three or four sliding members is much simpler than that in which the diameter is expanded or reduced to match the inner diameter of the lining material. This is because it is not necessary to maintain the discharge port at the radial center position of the space. Since the hot fluid is discharged sufficiently from the discharge port regardless of the position of the discharge port in the radial direction of the space, that is, the position deviated from the radial center position, the lining material is impregnated with the fluid. The curing of the curable resin can be sufficiently promoted without deviation in the circumferential direction of the lining material.

  The sliding member may be a rotatable roller or a sled-shaped member. In addition, a plurality of (for example, three or four) sliding members may be provided in the circumferential direction, or only one sliding member may be provided.

  Preferably, the hose has a strength capable of pushing the heater when the heater is inserted into the space.

  That is, it is preferable that the hose has a strength that normally does not buckle when the heater is inserted into the space. As a material used for the hose, a material having higher strength than a material having a high heat resistant temperature is suitable. According to this hose, the heater can be efficiently inserted into the space.

  According to the heating device of the present invention, the curing of the curable resin impregnated in the lining material can be sufficiently promoted.

It is a figure which shows the pipeline repair device installed in the construction site. It is a flow chart which shows a flow of a pipeline repair method which repairs an attachment pipe. It is a figure for demonstrating a lining material formation process, a storing process, and an attachment process which are shown in FIG. It is a figure which shows a mode that the lining material was inverted from the inversion port to the length which can be inserted in a mounting pipe | tube. It is a figure which shows the mode after starting the reverse pressure welding process (step S5) shown in FIG. It is a figure which shows a mode that the reverse pressure welding process (step S5) was completed. It is a figure showing a mouth. It is a figure showing a heating device of this embodiment. It is a figure which shows a mode that the heating process was started. It is a figure which shows a mode that the main-body part of a heating apparatus is moved toward the rear end from the front-end | tip part of the space enclosed by the internal peripheral surface of lining material. It is a figure for demonstrating the collection | recovery process which used the storage part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The heating device of the present invention can be used to repair the inner surface of a pipeline such as a sewage pipe, and in particular, can be suitably used to repair the inner surface of a mounting pipe branched from a main pipe. Therefore, in the following description, an aspect used for repairing the inner surface of the mounting pipe will be described as an example.

  FIG. 1 is a diagram showing a pipeline repair device installed at a construction site, and FIG. 2 is a flowchart showing a flow of a pipeline repair method for repairing a mounting tube.

  In the description herein, the attachment pipe 71 connecting the main pipe 72 and the weir 73 is to be repaired. The mounting pipe 71 has a length in the extension direction, that is, a length from the weir side opening 71a located on the weir 73 side to the main pipe side opening 71b located on the main pipe 72 side is about 5 m to 10 m. May exceed 10m.

  First, as shown in step S1 of FIG. 2, an apparatus installation step of installing the pipeline repair device 1 shown in FIG. 1 around the pipeline to be repaired is performed. In addition, before carrying out the device installation process, the high pressure cleaning car is used to remove attached matter etc. in the mounting tube 71, the situation in the mounting tube 71 using a TV camera etc., the mounting tube 71 and the main pipe It is desirable to confirm the connection state with 72 and the like.

  In FIG. 1, the duct repair device 1 is installed in the vicinity of the weir 73 to which the mounting pipe 71 to be repaired is connected. The conduit repair device 1 shown in FIG. 1 has a storage 2 in which a lining material is stored, and a port 3 connected to the storage 2. Also shown in FIG. 1 is a compressed air supply means 4 connected to the storage 2 of the pipeline repair device 1.

  The storage unit 2 has a winding member 21 for winding the lining material, and a pressure regulator 22 connected to the compressed air supply means 4 and receiving the compressed air. The storage unit 2 of the present embodiment stores the lining material in a wound state on the winding member 21 by rotating the handle 211 of the winding member 21. In addition, the storage state of the lining material in the storage part 2 is not limited to this, For example, it may be a storage state which folds and stores a lining material.

  The mouth 3 has a reverse mouth 31 opened on the left side in FIG. The reversing opening 31 is an opening to be attached in a state where one end of the lining material stored in the storage unit 2 is folded back to the outside, and the folded portion of the lining material is an end fixing tool 311 such as a band or a belt. It is fixed.

  The compressed air supply means 4 has a compressor 41 and a hose 42. The hose 42 connects the pressure regulator 22 of the storage unit 2 and the compressor 41. The compressed air produced by the compressor 41 flows through the hose 42 and is supplied from the pressure regulator 22 into the storage 2.

  Subsequently, a lining material forming process shown in FIG. 2 is performed (step S2). Here, a base hose and a calibration hose transported from the factory to the construction site are used. For the base hose, a non-woven fabric processed into a cylindrical shape coated with an impermeable film, a special knitted fabric drawn into an impermeable tube, or a chopped strand mat processed into a cylindrical shape It is possible to use one drawn into a permeable tube or the like. The calibration hose is a polyester fiber woven fabric coated with soft vinyl chloride, and at the time of installation, plays a role of pressing the base hose from the inside toward the mounting tube, and is recovered after the installation. These base hoses and calibration hoses are cut to a suitable length at the construction site in consideration of the length of the mounting tube 71, the depth and size of the weir 73, etc. shown in FIG. In addition, prepare a calibration hose slightly longer than the base hose. Further, the base hose is impregnated with a thermosetting resin using a roller or the like at a construction site. The thermosetting resin to be impregnated is not particularly limited, and examples thereof include unsaturated polyester resin and epoxy resin, and a curing agent is added. A curing accelerator is added to the unsaturated polyester resin, and an adhesive and a defoaming agent are added to the epoxy resin.

  FIG. 3 is a view for explaining a lining material forming process, a storing process and an attaching process shown in FIG. As shown in FIG. 3 (a) and FIG. 3 (b), the tip of the base hose 81 impregnated with the thermosetting resin is tied with a cord-like body 80 such as a rope, and the cord-like body 80 is wound up. The base hose 81 is completely drawn into the calibration hose 82 from the one end side opening 82e of the calibration hose 82 to form the lining material 8 (step S2). In the lining material 8 formed in step S2, the calibration hose 82 is longer than the base hose 81, the calibration hose 82 is located outside, and the base hose 81 is located inside the calibration hose 82. There is.

  Subsequently, the cord-like body 80 which tied the tip of the base hose 81 is unwound, and as shown in FIG. 3C, one end of the calibration hose 82 is tied and closed. The one end closed here is referred to as a tip 82a hereinafter, since it becomes the tip when the calibration hose 82 finishes reversing. Next, one end of the reversing belt 83 is tied to the tied tip 82a. The other end of the reversing belt 83 is attached to the winding member 21 of the storage unit 2, and by rotating the handle 211, the reversing belt 83 is taken up by the winding member 21, and the lining material 8 is also reversed in time. Then, as shown in FIG. 3D, the sheet is wound around the winding member 21. As a result, the lining material 8 is stored in the storage unit 2 (step S3).

  Further, as shown in FIG. 3D, the end of the lining material 8 opposite to the side taken up by the take-up member 21 is fixed in the state of being folded back from the reversing opening 31. It is attached to the mouth 3 by the tool 311 (step S4). FIG. 3E is a cross-sectional view showing an enlarged part of the lining material 8 attached to the reverse opening 31 of the opening 3. As shown in FIG. 3 (e), when the lining material 8 is attached to the reverse port 31 of the port 3, the base hose 81 is located inside the calibration hose 82 in the port 3 and the reverse port 31 In the portion folded back to the outside, the base hose 81 is positioned outside the calibration hose 82.

  Subsequently, preparation is made to carry out the reverse pressure welding step (step S5) shown in FIG.

  FIG. 4 is a view showing a state in which the lining material is reversed from the reversing port to a length that can be inserted into the mounting pipe.

  When the compressor 41 of the compressed air supply means 4 is operated and compressed air is supplied from the pressure regulator 22 into the storage part 2 as shown by the arc-shaped arrow in FIG. 4, FIG. 3 (d) and FIG. 3 (e). As shown in FIG. 2, the lining material 8 attached to the reversing port 31 is fed out while being reversed from the reversing port 31 by the pressure of the supplied compressed air. Here, the pressure regulator 22 is operated when the length of the lining material 8 delivered while being inverted from the reversing port 31 reaches a level where it can be inserted slightly into the mounting tube 71 from the weir side opening 71a, Stop the supply of compressed air temporarily.

  FIG. 5 is a view showing a state after the reverse pressure welding step (step S5) shown in FIG. 2 is started, and FIG. 6 is a view showing a state where the reverse pressure welding step (step S5) is completed.

  The tip of the lining material 8 which has been reversed halfway is inserted into the mounting tube 71 from the side opening 71a, and it is ready to carry out the reverse pressure welding step (step S5) shown in FIG.

  Then, the pressure regulator 22 is operated to resume the supply of the compressed air into the storage unit 2, and the reverse pressure welding step (step S5) is started. When compressed air starts to be supplied again into the storage unit 2, as shown in FIG. 5, the lining material 8 inserted into the mounting pipe 71 is inverted toward the main pipe 72 by the pressure of the supplied compressed air. Will grow. Eventually, as shown in FIG. 6, the tip end of the base hose 81 stays near the edge of the main pipe side opening 71b, while the tip end portion of the calibration hose 82 is inside the main pipe 72 from the main pipe side opening 71b. The reverse pressure welding step (step S5) is completed. The tip 82a of the calibration hose 82 is tied and closed, and one end of a reversing belt 83 is tied thereto. In the space S surrounded by the inner circumferential surface of the lining material 8 shown in FIG. 6 (the space surrounded by the calibration hose 82), a reverse belt 83 extending from the tip 82a is running. It is connected to the taking member 21. An appropriate tension can be given to the lining material 8 inserted into the mounting tube 71 by the pressure of the compressed air by manually operating the winding member 21 to which the reversing belt 83 is connected. Further, when the lining material 8 does not advance smoothly, it is preferable to perform the winding operation by the winding member 21. This makes it possible to smoothly insert the lining material 8 into the mounting tube 71 in reverse.

  Further, in FIG. 6, as shown by enlarging the encircled portion, the lining material 8 inserted into the mounting pipe 71 in reverse is overlaid with the base hose 81 on the inner surface of the mounting pipe 71, and the base The calibration hose 82 is positioned inside the hose 81. The pressure of the supplied compressed air is applied to the calibration hose 82, and as shown by the arrow in the enlarged view of FIG. 6, the base hose 81 is pressure-welded toward the mounting tube 71 via the calibration hose 82. Be done. This pressure contact corresponds to the pressure contact in the reverse pressure contact process (step S5) shown in FIG.

  Next, the separation step (step S6) shown in FIG. 2 is performed.

  FIG. 7 is a view showing the mouth.

  The mouth 3 is fixed to the storage 2 by a clamping ring 32. FIG. 7A is a plan view showing the clamp ring 32. FIG. The clamping ring 32 has a lever 321 and a ring member 322. The lever 321 can be pivoted between the clamping position and the unclamping position, and in FIG. 7 (a) the lever 321 is shown in the clamping position. When the lever 321 is pivoted to the clamp position, the diameter of the ring member 322 is reduced and it is in a tightened state. On the other hand, when the lever 321 is pivoted to the unclamping position, the diameter of the ring member 322 is expanded and is in the released state. When the mouth 3 is fixed to the storage unit 2, the lever 321 is turned to the unclamping position, and then the connection opening 33 on the opposite side to the reverse opening 31 is provided in the opening 23 of the storage unit 2 shown in FIG. And the lever 321 is pivoted to the clamp position.

  On the other hand, in the separation step (step S6) shown in FIG. 2, the lever 321 is pivoted to the unclamping position in a state where the mouth 3 is fixed to the storage 2 to remove the mouth 3 from the storage 2 . Next, the connection opening 33 of the mouth 3 is closed with a lid. The storage part 2 from which the mouth part 3 is removed in this separation process can be used for the process from the storage process (step S3) to the insertion process (step S6) in pipeline repair of other attachment pipes. It becomes easy to repair the mounting pipe of the parallel.

  FIG. 7 (b) shows a plan view of the lid, and FIG. 7 (c) shows a front view of the lid.

  The cover 35 is provided with a hose hole 350 for passing a hose of a heating device (not shown) here, three holes 351 to 353, a viewing window 354 and a pair of handles 355, and on the back side, A U-bolt 356 is provided to which the reversing belt 83 is tied. Each of the holes 350 to 353 is provided with a socket that protrudes to the front side. A pressure gauge (not shown) is attached to any one of the three holes 351 to 353. In addition, auxiliary air is supplied from the other hole, and the remaining one hole is used as an exhaust hole.

  FIG. 8 is a view showing a heating device of the present embodiment.

  The heating device 5 of the present embodiment comprises a main body 51 and a hose 52 connected to the rear side of the main body 51. The main body portion 51 has a cylindrical frame 510 of an equilateral triangle, and a mesh member 511 is attached to the front end (front end) of the cylindrical frame 510. FIG. 8A is a back view of the main body 51 (rear view). As shown in FIG. 8A, in the main body portion 51, sliding rollers 512 are provided in three places at intervals of 120 degrees in the circumferential direction centering on the tubular frame 510. FIG. 8B shows the heating device 5 from the position (the 2 o'clock position) just between the sliding roller 512 at the 12 o'clock position and the sliding roller 512 at the 4 o'clock position shown in FIG. It corresponds to the side view seen. In FIG. 8B, the left side of the figure is the front side (tip side), and the right side is the rear side. Two sliding rollers 512 are provided in the front-rear direction. The sliding roller 512 may be replaced by a sliding member of a sled shape. The alternate long and short dash line shown in FIG. 8A is a line representing the inner peripheral surface 8 u of the lining material 8. The outer diameter connecting the sliding rollers 512 provided at three positions at intervals of 120 degrees in the circumferential direction is much smaller than the diameter of the inner peripheral surface 8 u of the lining material 8, as shown in FIG. The sliding roller 512 at the 4 o'clock position and the sliding roller 512 at the 8 o'clock position contact the inner circumferential surface 8 u of the lining material 8. In some cases, only one type of sliding roller 512 (for example, only the sliding roller 512 at position 12) may contact the inner circumferential surface 8 u of the lining material 8. Each sliding roller 512 is rotatably attached by a mounting stay 513 fixed to a cylindrical frame 510 of an equilateral triangle, and the mounting stay 513 does not bend or expand. Therefore, when sliding on the inner peripheral surface 8 u of the lining material 8, each sliding roller 512 does not change its distance from the cylindrical frame 510 and remains constant. On the other hand, the mounting stay 513 of the sliding roller 512 is bent or expanded so that the cylindrical frame 510 always coincides with the center point of the space S surrounded by the inner peripheral surface 8 u of the lining material 8. A structure is also conceivable in which the outer diameter connecting the sliding rollers 512 provided in three places at intervals of 120 degrees in the circumferential direction expands or reduces the diameter. However, adopting this structure not only complicates the structure but also makes it more susceptible to failure. In addition, the size and weight of the device increase and the cost also increases. In the present embodiment, the discharge port 515a for discharging the heated air is provided on the extension of the central axis of the cylindrical frame 510, but since sufficiently hot air is discharged from the discharge port 515a, the lining The curing of the curable resin impregnated in the material 8 can be sufficiently promoted without deviation in the circumferential direction of the lining material 8. Therefore, the discharge port 515a does not have to be always aligned with the center point of the space S, and there is no need to adopt the above structure, so the heating device 5 can be reduced in size and weight, and the cost is also suppressed. be able to.

  As shown in FIG. 8B, inside the cylindrical frame 510, a heater unit 515 is disposed as shown by a dotted line. The heater unit 515 is supplied with air at a flow rate of 50 to 5000 L / min when the mounting pipe has an inner diameter of 100 mm to 300 mm, and the supplied air can be up to several hundred by the built-in electric heating mechanism (not shown). It can be heated to 0 C and discharged from the discharge port 515a at the tip. The discharge port 515a is provided on an extension of the tip end side of the central axis of the cylindrical frame 510, and is not separated by 1 cm from the tip of the electric heating mechanism. The positional relationship between the discharge port 515a and the electric heating mechanism may be adjacent to each other. Alternatively, a part of the electric heating mechanism may be exposed, and the periphery of the exposed part may be the discharge port 515a, or all of the electric heating mechanism is exposed, and the entire exposed electric heating mechanism is The periphery of the nozzle may be the outlet 515a. The discharge port 515a is covered by the mesh member 511 at an interval from the discharge port 515a. For this reason, the discharge port 515a never comes in direct contact with the inner peripheral surface 8u of the lining material 8, and the heated air discharged from the discharge port 515a is discharged from the many meshes of the mesh member 511. High temperature heated air can be discharged from the discharge port 515a, and when the discharge port 515a directly contacts the inner peripheral surface 8u of the lining material 8 (here, the calibration hose 82), the inner peripheral surface 8u is heated The mesh member 511 is provided to prevent the discharge port 515 a from directly contacting the inner peripheral surface 8 u of the lining material 8.

  Further, a thermocouple 516 is connected to the terminal that has exited from the cylindrical frame 510. The tip of the thermocouple 516 is locked to the mesh member 511, and the thermocouple 516 can directly measure the temperature of the heated air discharged from the mesh of the mesh member 511.

  Air supplied to the electric heating mechanism incorporated in the heater unit 515 flows through the hose 52 connected to the rear side of the main body 51. Further, in the hose 52, a lead for supplying power to the electric heating mechanism incorporated in the heater unit 515 is also contained, and furthermore, a lead of the thermocouple 516 is also contained. In addition, the wire may be taken out of the hose 52.

  In the separation step (step S6) shown in FIG. 2, when the mouth 3 is removed from the storage portion 2, the other end of the reversing belt 83 attached to the winding member 21 is removed from the winding member 21. It ties to U bolt 356 of lid 35 shown in FIG. Further, before closing the connection opening 33 of the mouth 3 with the lid 35, the hose 52 provided at the lid 35 with the hose 52 whose tip is connected to the main body 51 of the heating device 5 shown in FIG. After the main body 51 is inserted into the space S surrounded by the inner peripheral surface 8 u of the lining material 8, the connection opening 33 of the mouth 3 is closed with the lid 35, and the separation process ( Step S6) is completed.

  When the separation step (step S6) is completed, the insertion step (step S7) shown in FIG. 2 is performed, and the main body 51 of the heating device 5 shown in FIG. 8 is surrounded by the inner circumferential surface 8u of the lining material 8. The end portion of the space S (the space surrounded by the calibration hose 82) is inserted.

  In the previous separation step, the space S surrounded by the inner circumferential surface 8 u of the lining material 8 from when the mouth 3 is removed from the storage portion 2 until the connection opening 33 of the mouth 3 is closed with the lid 35 The pressure once decreases, but in the insertion step, auxiliary air is supplied from any one of the three holes 351 to 353 of the lid 35 shown in FIG. To increase the volume of the space S sufficiently. Then, the main body 51 of the heating device 5 is gradually pushed into the space S by the hose 52. The hose 52 is made of nylon and is rigid. For this reason, when pushing the main body 51 into the space S, the hose 52 is not normally buckled. That is, when inserting the main body 51 into the space S, the hose 52 has a strength capable of pushing the main body 51. The hose 52 is not limited to nylon but may be made of a material having a certain strength. That is, as the material used for the hose 52, a material having higher strength than a material having a high heat resistant temperature is suitable.

  When the main body 51 of the heating device 5 is inserted up to the tip of the space S, the insertion step is completed, and the heating step (step S8) shown in FIG. 2 is started.

  FIG. 9 is a diagram showing how the heating process is started.

  The main body 51 of the heating device 5 reaches the tip of the space S (the space surrounded by the calibration hose 82) surrounded by the inner peripheral surface 8u of the lining material 8 shown in FIG. The portion of the rear end portion of the lining material 8 which rises from the weir side opening 71a to the inside of the weir 73 and further to the ground side is raised substantially vertically, and the rear end of the lining material 8 It remains connected to the mouth 31. In the mouth 3, the connection opening 33 is closed by the lid 35.

  One end of a reverse belt 83 is connected to the tip 82a of the calibration hose 82 shown in FIG. 9, and the other end of the reverse belt 83 is connected to the U bolt 356 of the lid 35 (see FIG. 7C). It is tied.

  Also, the hose 52 extending from the main body 51 of the heating device 5 shown in FIG. 9 passes through the hose hole 350 of the lid 35 and exits to the ground side, and is connected to the compressor 41 of the compressed air supply means 4 . Furthermore, a pressure gauge 36 is attached to the lid 35 shown in FIG.

  Moreover, the lead wire for feeding the electric heating mechanism, which has passed through the hose 52, is taken out of the hose 52 on the ground side, and via a controller (not shown) for adjusting the heating temperature of the electric heating mechanism. It is connected to a generator (not shown). In addition, the lead wire of the thermocouple 516 passing through the hose 52 is also taken out from the hose 52 on the ground side, connected to a temperature measurement unit (not shown), and released from the mesh of the mesh member 511 The temperature of the heated air is monitored.

  In the heating step (step S8), compressed air is supplied through the hose 52 to the main body 51 of the heating device 5 that has reached the tip. Also, power feeding is started to an electric heating mechanism (not shown) built in the heater unit 515 shown in FIG. 8B, and the compressed air supplied from the hose 52 is heated at the tip portion of the lining material 8 and heated. The discharged air is immediately discharged from the discharge port 515a, and discharged from the many meshes of the mesh member 511 to the tip portion in the space S. The temperature of the heated air discharged from the large number of meshes of the mesh member 511 is monitored by the thermocouple 516, and the temperature of the heated air is a temperature at which the calibration hose 82 does not melt, and a thermosetting resin The controller operates the controller (not shown) for adjusting the heating temperature of the electric heating mechanism while looking at the temperature measuring means (not shown) so that the temperature at which the curing of the resin is accelerated (e.g., 60.degree. C. to 80.degree. C.). Further, the pressure in the space S can be measured by the pressure gauge 36 attached to the lid 35, and the value of the pressure gauge 36 is checked to operate the pressure regulator 22 to adjust the pressure of the compressed air. Do. As shown in FIG. 9 as a magnified circle, the base hose 81 is pressed toward the mounting pipe 71 via the calibration hose 82 by the heated air that has just been heated in the space S. The base hose 81 is heated, and the curing of the thermosetting resin impregnated in the base hose 81 is promoted.

  In the present embodiment, the air in the space S is released to the atmosphere through the exhaust hole of any one of the three holes 351 to 353 provided in the lid 35, but the exhaust air The heated air exhausted from the holes may be returned to the compressor 41 and circulated.

  Further, in the present embodiment, the main body 51 of the heating device 5 is moved in the extension direction of the mounting pipe 71 in the space S.

  FIG. 10 is a view showing a state in which the main body portion of the heating device is moved from the front end portion of the space surrounded by the inner circumferential surface of the lining material toward the rear end.

  The air in the space S is released to the atmosphere from the exhaust hole in the lid 35, so that the heated air is released from the many meshes of the mesh member 511 and then moves to the lid 35 side. I will. In the space S, in the vicinity of a large number of meshes of the mesh member 511, a sufficient amount of heat is necessary to accelerate the curing of the thermosetting resin, but a fixed distance from a large number of meshes of the mesh member 511 In places far away, the amount of heat required to accelerate the curing of the thermosetting resin is lost. Therefore, the hose 52 connected to the main body 51 is pulled by a predetermined distance at predetermined time intervals, and the positions of many meshes of the mesh member 511 are moved to the rear end side. Alternatively, the movement of the main body 51 (the multiple meshes of the mesh member 511) may be moved continuously at a slower moving speed instead of this stepwise movement. In any case, the base hose 81 was impregnated by holding the positions of many meshes of the mesh member 511 within a certain area until the thermosetting resin was completely cured or almost cured. The thermosetting resin is gradually cured from the front end side (the main pipe 72 side) toward the rear end side. In FIG. 10, the main body 51 is pulled up to the vicinity of the eyelid-side opening 71a. Even when the main body 51 is moved to the lid 35 side (when pulled up), as shown in FIG. 8A, the sliding roller 512 at the 4 o'clock position and the sliding roller at the 8 o'clock position The contact 512 slides on the inner circumferential surface 8 u of the lining material 8. Alternatively, only one type of sliding roller 512 (for example, only the sliding roller 512 at position 12) may contact and slide on the inner circumferential surface 8 u of the lining material 8.

  After the main body portion 51 is pulled up completely out of the weir side opening 71a, the heating process of step S8 ends. That is, after the main body portion 51 is completely taken out from the weir side opening 71a, the power feeding to the electric heating mechanism (not shown) of the main body portion 51 is first stopped, and then the compressor 41 is stopped.

  When the heat of curing is generated to a considerably high temperature by the polymerization reaction when the thermosetting resin cures, the curing heat can be used to accelerate the curing of the resin. For example, when the heat resistance temperature of the calibration hose 82 is raised and the heating vapor of 100 ° C. is discharged from the discharge port 515 a, the curing heat generation temperature may be 120 ° C. in some cases. When heating is started from the tip of the space surrounded by the inner circumferential surface of the lining material, the curing heat generated at the tip gradually propagates (transfers heat) toward the rear end, and reaches the heel side opening 71a Cure proceeds. At this time, if the curing heat is generated once at the front end portion, the thermosetting resin may be cured only by the curing heat propagating toward the rear end, in some cases, the heating device 5 is By heating while moving to the end side, the propagation of the curing heat to the rear end side can be promoted or the heating itself can be assisted. The heating device 5 may be moved continuously toward the rear end, or may be repeatedly moved and stopped toward the rear end. In the latter case, in particular, the heat of curing is surely generated at the stopped position, and the propagation of the heat of curing at a short distance to the next stop position is repeated, and the heat of curing is efficiently utilized The curing of the curable resin can be promoted.

  Here, when the photo-curing resin is used, the photo-curing resin is cured only at the portion irradiated with light, so even if the rear end is cured, it is unclear whether the middle portion is irradiated until the light is cured. It is difficult to determine whether the curing of the photocurable resin has been completed over the entire length of the mounting tube. On the other hand, if the heat of curing generated in the thermosetting resin propagates from the front end side to the rear end side as described above, if the resin on the rear end side is cured, the resin on the front end side is also cured Thus, the curing completion of the thermosetting resin can be determined over the entire length of the mounting pipe only by confirming the curing completion on the rear end side. That is, in the curing method herein, the curable resin of the cylindrical lining material impregnated with the thermosetting resin whose curing is accelerated by heating is completely cured from the front end portion of the lining material on the rear end side A curing method for curing to a position, comprising: a heating step of heating a leading end portion of the lining material; and the curable resin impregnated on a rear end side of the leading end portion of the lining material after the heating step is performed. The curing method includes a curing step of curing and a curing confirmation step of confirming that the curable resin at the curing completion position of the lining material is cured. In this curing method, if the curable resin at the curing completion position is uncured, the curing step is continued, and if it can be confirmed that the curing is completed, the curing step is ended. The curing step may be a step of heating the curable resin from the tip toward the curing completion position, or the curing heat generated at the tip propagates from the tip to the curing completion position It may be a step of waiting to be carried out, or it may be a step of assisting the heat of curing to propagate by heating, or a step of assisting the curing by the propagation of heat of curing by heating.

  After the temperature in the mounting tube 71 has dropped to about normal temperature, the recovery step (step S9) shown in FIG. 2 is performed. In this recovery process, the reversing belt 83 is pulled by human power as the simplest method. As a result, the tip 82a of the calibration hose 82 is dragged to the ground side. Since the thermosetting resin cures in a state where the base hose 81 is in pressure contact with the mounting pipe 71, the calibration hose 82 is pulled off from the base hose 81, and the base hose 81 remains inside the mounting pipe 71.

  When the calibration hose 82 is completely taken out of the mounting pipe 71, the base hose 81 is cut at the weir side opening 71a, and the calibration hose 82 and the cut base hose 81 are recovered.

  Moreover, the collection | recovery process can also be implemented using the storage part 2. FIG.

  FIG. 11 is a diagram for explaining a recovery process using the storage unit.

  As shown in FIG. 11, the lid 35 is removed from the mouth 3, and the mouth 3 is connected to the storage 2. The storage unit 2 is also connected to a compressed air supply means 4. Furthermore, the reversing belt 83 is attached to the winding member 21. Next, the reverse belt 83 is wound by the winding member 21 by rotating the handle 211 while supplying air from the compressed air supply means 4 into the lining material 8 with very weak pressure, this time, the calibration hose 82 The tip 82a of the is pulled to the ground side. The enlarged view of the encircled portion shown in FIG. 11 shows that the base hose 81 remains inside the mounting pipe 71, and the inner peripheral surface of the mounting pipe 71 is lined by the base hose 81. There is.

  Also in the recovery step using the storage unit 2, when the calibration hose 82 is completely taken out from the attachment tube 71, the base hose 81 is cut at the weir side opening 71a, and the calibration hose 82 and the cut base hose 81 are recovered. . In the recovery process using the storage unit 2, since the calibration hose 82 is pulled off while supplying air with a weak pressure into the lining material 8, an appropriate pressure is applied to the calibration hose 82, and the calibration hose is collected at the time of recovery. It is possible to avoid a situation where the 82 is twisted or its shape is broken.

  In addition, since it is not necessary to close the mouth 3 in the recovery step, a winding means dedicated to recovery of the calibration hose 82 may be used separately from the storage portion 2.

  Finally, if necessary, finish the weir side opening 71a with a pipe finish material, and if the hardened base hose 81 protrudes to the main pipe side opening 71b, cut it and pipe repair is completed .

  In the pipeline repair using the heating device 5 shown in FIG. 8 as described above, the electric heating mechanism is inserted into the space S surrounded by the inner peripheral surface of the lining material 8, and the electric heating mechanism Since heated air is supplied into the space S from the immediate vicinity of the above, the air immediately after being heated sufficiently accelerates the curing of the curable resin impregnated in the lining material. As a result, the heating process of step S8 shown in FIG. 2 is shortened, and the time for the entire pipeline repair is also shortened.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, the resin to be heated is not limited to the thermosetting resin, and may be a resin which cures even at normal temperature but whose curing accelerates by heating. Also, for the lining material, insert the calibration hose into the base hose by inverting it in the factory, and at the construction site, pull the base hose into which the calibration hose is reversely inserted into the pipe as it is, and then inside the calibration hose. The heating device 5 may be inserted into the Furthermore, although the example of the attachment pipe | tube 71 was demonstrated, it can construct using the heating apparatus 5 also about piping other than the attachment pipe | tube 71. FIG. Further, instead of air, water may be supplied to the electric heating mechanism of the heating device 5, and water vapor may be discharged from the discharge port 515a.

  Finally, I add it including the things explained so far.

(Supplementary Note 1)
A tubular lining material impregnated with a curable resin whose curing is accelerated by heating is reversely inserted into the pipe, and the lining resin is heated by a heating fluid to cure the curable resin and thereby the pipe In a pipeline repair system for repairing the inner surface of a channel,
A storage unit for storing the lining material;
A mouth portion connected to the storage portion and having a reverse port attached in a state where one end of the lining material stored in the storage portion is opened;
A compressed fluid is supplied to the storage section, and the lining material, one end of which is attached to the reversing port, is fed out while being inverted from the reversing port into the pipe by the fluid pressure, and the lining material is Compressed fluid supply means pressed against the inner surface;
Heating means inserted in the lining material inverted in the pipe and heating the supplied fluid in the lining material;
A conduit repair system comprising: a hose connected to the heating means and supplying a fluid from outside the lining material to the heating means.

(Supplementary Note 2)
The storage portion is separable from the opening portion with the opening portion to which one end of the lining material is attached left on the lining material side while the heating means is inserted into the lining material. The pipeline repair system according to appendix 1, characterized in that

(Supplementary Note 3)
The conduit repair system according to claim 1 or 2, wherein the heating means is movable in the extending direction of the conduit in the lining material inverted into the conduit.

(Supplementary Note 4)
A tubular lining material impregnated with a curable resin whose curing is accelerated by heating is reversely inserted into the pipe, and the lining resin is heated by a heating fluid to cure the curable resin and thereby the pipe In a pipeline repair method for repairing the inner surface of a channel,
Storing the lining material in a storage unit;
An attaching step of attaching one end of the lining material stored in the storage unit to the reverse port of the opening connected to the storage unit;
The compressed fluid is supplied from the compressed fluid supply means to the storage section, and the lining material, one end of which is attached to the reversing port, is fed out while being inverted from the reversing port into the pipe by the fluid pressure and the lining material A reverse pressure welding step of pressing the inner surface of the pipe into the inner surface of the pipe;
Inserting the heating means for heating the supplied fluid into the lining material inverted in the pipe line;
The fluid is supplied to the heating means inserted in the inserting step, and the curing of the curable resin is performed while pressing the lining material against the inner surface of the pipe by the fluid heated in the lining material by the heating means. And a heating step for promoting.

(Supplementary Note 5)
With the heating means still inserted into the lining material, leaving the mouth part to which the one end of the lining material is attached on the lining material side, the storage part is separated from the mouth part The conduit repair method according to claim 4, further comprising a step.

(Supplementary Note 6)
The conduit according to claim 4 or 5, wherein the heating step is performed while moving the heating means in the extending direction of the conduit in the lining material inverted into the conduit. Repair method.

(Appendix 7)
The reverse pressure welding step is a step of reversing the lining material, in which the base hose impregnated with the curable resin is inserted into a calibration hose, such that the calibration hose is located inside the base hose,
The conduit repair method according to any one of Appendices 4 to 6, further comprising a recovery step of recovering the calibration hose after the curable resin is cured by carrying out the heating step.

DESCRIPTION OF SYMBOLS 1 pipe line repair apparatus 2 storage part 21 winding member 3 mouth part 31 reverse port 35 lid 4 compressed air supply means 5 heating device 51 main body 511 mesh member 512 sliding roller 515 heater unit 515a discharge port 52 hose 71 attachment pipe 71a 桝 side opening 71 b main pipe side opening 72 main pipe 73 桝 8 lining material 8 u inner circumferential surface 81 base hose 82 calibration hose 83 reverse belt

Claims (4)

A heater inserted in a space surrounded by the inner circumferential surface of a cylindrical lining material impregnated with a curable resin whose curing is accelerated by heating;
A hose connected to the heater and supplying fluid from outside the space to the heater;
And a discharge port for discharging the fluid supplied from the hose and heated by the heater into the space.   The heating device according to claim 1, wherein the discharge port is covered by a mesh member at a distance from the discharge port. A sliding member sliding on an inner circumferential surface of the lining material;
The heater is inserted into the space by the sliding member sliding on the inner circumferential surface of the lining material,
The heating device according to claim 1, wherein the sliding member has a constant distance to the discharge port.   The heating according to any one of claims 1 to 3, wherein the hose has a strength capable of pushing the heater when the heater is inserted into the space. apparatus.

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