KR101020932B1 - A repairing method for used fresh and waste water pipe with thermosetting resin immersion tube using u-type flexible tube feeder-tube union itself turn inside out insertion device - Google Patents

Abstract

PURPOSE: A regeneration method for self-reversing and inserting a tube impregnated with thermosetting resin liquid in old water and sewage pipes using an integrated U-shaped flexible tube feeder is provided to repair a pipe by inserting and thermally setting a tube without disassembly of the entire pipe or excavation. CONSTITUTION: A regeneration method for self-reversing and inserting a tube impregnated with thermosetting resin liquid in old water and sewage pipes is as follows. A U-shaped flexible tube feeder(2) is integrated on an end of a tube(1) by high-frequency welding(10), and the other end of the tube is connected to a pulling rope. When compressed air is injected into a compressed air and steam injecting nipple(7), a tube connection part(5) of the U-shaped flexible tube feeder is expanded into a circular shape so that the tube is pulled and reversed/inserted into the entrance of an old pipe. Steam is injected into the tube inside the pipe to thermally set the tube, thereby restoring the pipe.

Description

Self-reversal insertion regeneration method of thermosetting resin-impregnated tube of water and sewage old pipe using integrated citron flexible tube feeder. {A repairing method for used fresh and waste water pipe with thermosetting resin immersion tube using U-type flexible tube feeder-tube union itself turn inside out insertion device}

The present invention is a method of regenerating old buried water and sewage pipes and industrial pipes of the ground or high places PE film-coated non-woven reinforcement tube (hereinafter referred to as 'tube') impregnated with the thermosetting resin liquid inside the old pipe by inverting the whole When repairing, cut off a part of the pipeline while laying the old water and sewage pipe, and after drying the inside of the pipeline, U-type flexible tube feeder and thermosetting resin impregnated tube Water pipes, sewage pipes that form non-corrosive linings with strong adhesive force inside the old pipes after heat-hardening the inserted tubes by steam or hot water. The present invention relates to a method for rehabilitation of industrial old pipes.

Background art of the present invention is to excavate and cut a part of the pipeline when rehabilitation of old water and sewage pipe buried pipelines and industrial pipes, or in the case of sewer pipes to clean the sewer pipes through the manhole Remove foreign substances such as rust, scale and sludge in the pipeline by using a high pressure water cleaner and a scraper or sandblaster, and dry the pipeline wall with a bro or a heat blower. The present invention relates to a technology for regenerating old pipes by circulating heating steam or hot water to cure the tubes to adhere noncorrosive linings to the old pipes. In this technique, the conventional inverting inserter is a method of inverting the tube into the conduit using a closed drum inverter. The structure and operation of the enclosed drum reversing device is about 2m in drum diameter and 2m in drum width. It is a device that can be installed on large cargo trucks and can be repaired and repaired up to nominal diameter of 1200mm. . Inside the sealed drum, there is a reel, and the structure is rotated by a reduction gear motor. In the reel, the tow rope is pre-wound, and the end of one side of the tube is connected to the tow rope, and the tube is continuously wound thereon. The other end of the end is bound by inverting the tube over the inlet of the sealed drum inverter, blowing compressed air into the sealed drum to inflate and expand the tube, and slowly reinsert the tube into the pipeline while releasing the reel. The closed drum reversing insertion device has a disadvantage that the internal pressure is weak because of the large surface area of the sealed drum, so that the internal pressure is weak, and the reversal pressure of the tube cannot be increased, and the internal pressure is strong to increase the internal pressure to some extent. Since it is made of thick stainless steel plate, it takes high cost and heavy weight, so it is mounted on a large cargo truck or trailer, and equipment manufacturing cost becomes expensive, and the length of the tube wound on the closed drum is limited. There is a disadvantage in that the length is limited. In addition, when water and sewage pipelines are buried underground, large trucks stop on the road for long periods of time, disrupting traffic and causing traffic jams, worsening social costs. Also, underground facilities such as city gas pipes and power lines In the mixed state of communication lines, sewer pipes, etc., the construction is exposed to the risk of damage to other facilities.

Another conventional technique is a continuous tube reversal method using a pneumatic / hydraulic composite vertical tube fixed inverted insertion device (Utility Model 20-0378117) or a separate tube feed feeder. The inverted tube is not exposed by increasing the inversion pressure of the tube, but when the tube enters the inverter, the tube is flattened into a flat plate, so the width of the inverter is made wider than 150% of the nominal diameter. do. Therefore, when constructing with a pneumatic-hydraulic vertical pipe-mounted reversing insertion device, the width of the underground excavation hole cutting the buried pipe is wider than the diameter, and when the buried material of other facilities is mixed in the ground, the area of the excavation hole is secured. It is difficult to damage other facilities because it is difficult to use. Also, when used in the non-excavation method using the manhole of the sewer pipe, the entry of equipment inside the manhole is restricted and reversed from the ground to the inside of the manhole. There is an economic disadvantage to be lost. As described above, the tube reversing insertion device of the prior art is made of a durable steel structure, and also can not be miniaturized, it is impossible to transform into a model adapted to the site situation, and the place where there is a lot of underground buried In a narrow workspace, there is a limitation of construction.

The present invention, which compensates for the above disadvantages, is made of a flexible material, not a steel structure, of the tube reversing insertion device, and is narrowly connected to the U-type flexible tube feeder which is integrally formed by joining and connecting the reversing insertion device together with the tube. It is a device that is not affected by the work even in a place or a lot of obstacles. It is a rehabilitation method for water and sewage aging pipes, in which a tube with excellent adaptability to the construction site is self-reversed.

In the present invention, the tube reversing insertion device is formed of a steel material so that the end of one end of the tube connecting portion 5 and the tube 1 of the flexible tube feeder made of a flexible material is not used without a device of a structure that cannot be deformed. By overlapping, sewing and high frequency fusion (10) is integrated into a structure as shown in FIG. 1, and the tube supply part 3 and the compressed air shielding section (4) in the constituent part of the flexible tube feeder (Fig. 3) The widthwise side of the tube is deformed into the U-shaped steel frame (FIG. 4) from the outside, and compressed air is blown into the injection nibble 7 so that the connected tube can be reversely inserted as shown in FIG. Its purpose is to provide a way.

An integrated citron flexible tube feeder (FIG. 1) for solving the above problems will be described below with reference to the concept of the present invention by the accompanying drawings. 1 is a schematic plan cross-sectional view of an integral citron flexible tube feeder viewed from the top of the tube flattened state, as shown in the figure, the end of the citron flexible tube feeder and the end of one side of the tube are overlapped for sewing and high frequency fusion; (10) is integrally bonded so as not to leak the air pressure, and FIG. 7 is a schematic plan cross-sectional view of an integral citron flexible tube feeder using a cylindrical straight tube having a different appearance from FIG. 1, and FIG. It is a cross-sectional side view of the type citron flexible tube feeder, and the device configuration is integrally joined by sewing and high frequency fusion (10) by overlapping the end of one side of the tube with the end of the citron flexible tube feeder as shown in FIG. 3 is a detailed cross-sectional view of the U-shaped flexible tube feeder, and the constituent material of the U-shaped flexible tube feeder is a tube ( As the constituent material of 1), the film is fusion-coated on one side of the nonwoven fabric of the needle punched nonwoven fabric, and the film material may be any one of polyethylene, polypropylene, or polyurethane. Alternatively, it is possible to produce a citron-type flexible tube feeder by selecting any one of a material having flexibility at room temperature with a rubber-coated woven fabric having a low elasticity or a synthetic resin coated woven fabric having a low elasticity.

The structure of the U-shaped flexible tube feeder is divided into three areas, and is composed of a tube supply part 3, a compressed air shield 4, and a tube connection part 5. The diameter of the tube connection part (5) should be fitted to the outside of the thermosetting resin impregnated tube (1) and overlapped with the end of the tube to be sewn and sealed by high frequency fusion (10) to fit the tube (1) outer diameter. When the end diameter of the tube (1) is less than the diameter of the tube connection portion 5 of the U-shaped flexible tube feeder as shown in FIG. 7, the end diameter of the tube (1) is a tight band and an articulated screw jack (Patent No. 10-0935396) ( (Not shown) so as to be overlapped with the inner diameter of the tube connection part to be sewn and sealed by high frequency fusion (10), and the width of the tube supply part (3) is made wider than the flat width of the tube (1). (1) is free to enter, so that the compressed air shield plate (6) made of a thin material having excellent flexibility and elasticity at the upper end and the lower end at the inner end of the tube supply part so as to protrude along the side of the inner end of the tube supply part (3). Bonded, compressed air shield The material of is made of either rubber sheet or plastic sheet. The size of the compressed air shield 6 is longer than the width length inside the tube supply, and the width of the compressed air shield allows a sufficient width to enclose the tube 1. In addition, when the compressed air shield plate 6 of the U-shaped flexible tube feeder (Fig. 3) is made of a film coating material on one side of the polyester fiber nonwoven fabric, only the nonwoven layer at the inner end of the tube feed part is cut out. Only the film layer is left to protrude so that compressed air can be shielded. The width of the compressed air shield 4 connected between the tube supply part 3 and the tube connection part 5 is wider than the length of the compressed air shield 6 inside the tube supply part, thereby interfering with the operation of the compressed air shield plate. It is made of a U-shape flexible tube feeder having a size that is not received and has a structure having an injection nib (7) for blowing compressed air and steam into the tube joint side of the compressed air shield, and a tube impregnated with a thermosetting resin liquid ( 1) Insert one side into the tube connection part 5 through the tube supply part 3, align the end of the tube connection part 5 and the end of the tube 1 impregnated with the thermosetting resin liquid, and integrate with sewing and high frequency fusion. It is made of a type citron flexible tube feeder. In addition, FIG. 7 is a shape different from that of FIG. 3, and a tube supply part is provided by using a cylindrical straight tube having the same diameter as that of the tube supply part 3, the compressed air shielding part 4, and the tube connection part 5. (3) and the compressed air shielding portion (4), the tube connection portion (5) and the compressed air shielding plate (6) are manufactured in the same manner as shown in Figure 3, the tube connection portion (5) and the thermosetting resin liquid impregnated tube (1) Junction connection method is as follows. The thermosetting resin liquid impregnated tube (1) is generally made about 10 to 15% smaller than the diameter of the old pipe regeneration target tube so that the tube (1) is reversely inserted and then expands to the maximum to cause wrinkles on the inner surface of the pipe. Since it prevents, a difference of 10-15% from the diameter of the tube connection of the cylindrical straight tube flexible tube feeder occurs. Since the tube 1 can be expanded in this manner, the tube 1 can be expanded so that the end of the tube 1 overlaps with the inner diameter of the tube connection part 5 by using a tight band and an articulated screw jack (Patent No. 10-0935396) (not shown). (27) by aligning the end of the tube connection portion 5 and the end of the tube (1) to connect the sewing and high-frequency fusion (10) to produce an integral citron type flexible tube feeder.

4 is a steel frame for deforming and bending the width direction of the tube in a U-shape together with the tube 1 fitted with the supply portion 3 and the compressed air shielding plate 6 portion of the integrated U-shaped flexible tube feeder. It is bent to a size similar to the rehabilitation target diameter, and the frame is composed of an outer frame 11 and an inner frame 12 to maintain a predetermined gap in the flexible tube feeder, thereby suppressing the expansion of the compressed air shield 4 to be flexible. The compressed air shielding plate in the tube feeder is prevented from lifting off the tube surface 9 and being pushed back. The U-shaped frame has a structure that can adjust the gap width between the outer frame and the inner frame, and the reverse insertion speed of the tube 1 and the reverse insertion of the tube 1 by the operation of the space adjusting screw 13 and the screw handle 14. It controls the gap according to the thickness. In addition, the shape of the U-shaped frame may be not only a U-shaped shape but also a pair of S-type frames depending on the field situation. When the compressed air is blown in the state without the U-shaped frame, the integrated citron flexible tube feeder having the structure as described above has the compressed air shielding plate as the connecting portion 5 and the compressed air shielding portion 4 of the tube expand in a circular shape. (6) is lifted from the PE film coating part 9, which is the surface of the tube, is pushed backward and peeled off, so that compressed air cannot be shielded, so that the tube 1 is not reversed. In order to suppress such a phenomenon, the U-shaped frame similar to the diameter of the rehabilitation object tube as shown in FIG. 4 is deformed and bent into the flexible tube feeder with the U-shaped frame, and the deformation bending range is the tube supply part 3 and the compressed air shielding plate 6 Deflect and bend to). Strain-flexible integrated U-shaped flexible tube feeder and tube (1) is characterized in that the tube (1) inverted insertion even in a narrower place than the diameter of the rehabilitation target.

The work sequence for rehabilitation of sewage and sewerage pipes consists of three processes. Water pipes and industrial pipes buried underground are excavated and cut, and sewage pipes are used to remove rust, scale, and sediments inside the pipeline 16 by using a high pressure water cleaner and a scraper or sandblaster through the old pipe. After the preparatory process of drying the pipe wall;

Connect the thermosetting resin solution with the impregnated tube 1 to align the integrated citron flexible tube feeder with the inlet of the obsolete tube that has been prepared to arrange the citron type frame (FIG. 4) to the citron flexible tube feeder. After the tube 1 is mounted in the width direction, the other end of the tube 1 is connected to the towing rope 18 in the winch 19, and then the compressed air is blown into the injection nib (7). 5) When the tube is inflated, the tube 1 is drawn into the U-shaped flexible tube feeder, so that the tube 1 inverts itself and enters the old tube. When the tube is inserted half, the tube (1) end is passed through the U-shaped flexible tube feeder, so that the towing rope connected to the tube is released by the winch (19), the tube inverting insertion process to complete the tube inversion continuously;

After connecting the steam exhaust pipe 22 to the inverted exposed tube at the end of the inverted tube completed by the integrated U-type flexible tube feeder as shown in FIG. 6, the steam and the compressed air are injected into the inverted tube through the nib (7). At the same time, the thermosetting resin solution impregnated tube 1 is heated and cured in the expanded state, and the tube is cooled, and the cured tube protruding from the front and rear of the pipe is cut and connected to the cutting pipe, thereby completing the tube curing and water passing process. Integral Citron Flexible Tube Feeder is reusable, so it is very economical and very efficient.

In the implementation of the present invention, the tube is integrated with the U-shaped flexible tube feeder, so that the entire apparatus is flexible, so that it is easy to enter a place with many narrow excavations and underground burials, and has excellent adaptability in repairing piping through the inside of the building. Do. It is effective to save expensive tube in the whole maintenance of sewage aging pipe, and there is no need for a device for re-inserting the tube separately, which reduces the preparation work for re-inserting the tube, reducing the manpower, and is lightweight and simple. As it is a device, it is very adaptable to the overall repair and rehabilitation work of water supply pipes in the common areas of apartment houses such as chemical factories and apartments.

1 is a schematic plan cross-sectional view of an integral citron flexible tube feeder
Figure 2 is a schematic side cross-sectional view of an integral citron flexible tube feeder.
3 is a detailed view of the U-shaped flexible tube feeder
Figure 4 is a cross-sectional frame assembly
5 is a tube reversal insertion construction diagram by an integrated citron flexible tube feeder
6 is a view illustrating the curing process after the tube inverted insertion by an integrated citron flexible tube feeder
FIG. 7 is a schematic plan cross-sectional view of an integral citron flexible tube feeder using a cylindrical straight tube. FIG.

Set the length of one section of the construction pipeline to excavate a portion of the pipeline and cut the pipeline.The sewer pipeline removes the rust, scale, and sediment inside the pipeline through the manhole with a high pressure water cleaner and a scraper. After the preparatory process of drying, cut the tube to the length of the construction section, impregnated with a thermosetting resin liquid in the non-woven fabric layer inside the tube (1), and the yuja-type flexible tube feeder (Fig. 3) at the end of the tube (1) Align the ends by inserting and sewing and joining with high frequency fusion (10) to integrate, and aligned with the inlet of the cleaned pipe of the construction site. Mount the U-shaped frame to the flexible tube feeder, and then connect the other end of the tube (1) to the towing rope (18) wound around the winch (19), and pressurized air and steam inlet (7) in the yu-shaped flexible tube feeder (7). When compressed air is blown by connecting compressed air and steam lake), the tube connection part 5 of the integrated yuzu-type flexible tube feeder expands in a circular shape and draws a tube to invert the tube as shown in FIG. Proceed with reversal insertion of the tube. When the half tube is inserted, the towing rope connected to the end of the tube is released by the winch 19, and the tube reversal insertion is continuously completed. Then, the steam exhaust pipe is connected to the tube exposed at the end of the pipe, and the pressure in the tube inside the pipe is maintained. Steam is blown with the tube expanded to thermally cure the tube. After curing is completed, the pressure is maintained under pressure, and then, the cured tube protrusion is cut and the cut pipe is connected and restored.

1. Thermosetting liquid impregnation tube 2. U-shaped flexible tube feeder
3. Tube Supply 4. Compressed Air Shield
5. Tube connection 6. Compressed air shield
7. Compressed air and steam injection nitbull 8. Thermosetting impregnated nonwoven fabric layer
9. PE film coating part 10. Sewing and high frequency welding part
11. U-shaped outer frame 12. U-shaped inner frame
13. U-shaped flexible tube feeder spacing screw 14. Screw handle
15. Fixing bolt 16. Old buried pipe 17. Manhole or excavation
18. Winch towing rope 19. Winch 20. Compressed air and steam
21. Refraction insertion part of the U-shaped flexible tube feeder
22. Steam Exhaust Pipe 23. Exhaust Silencer 24. Boiler and Compressor
25. Tube guide pin 26. Bonded air shield plate
27. Expansion portion of the tube

Claims (2)

The constituent material of the U-shaped flexible tube feeder is a fusion-coated film on one side of a nonwoven fabric in which a polyester fiber nonwoven fabric is needle punched, and the material of the film may be any one of polyethylene, polypropylene, or polyurethane. Alternatively, the rubber coated woven fabric with less elasticity or the synthetic resin coated woven fabric with less elasticity can be selected from flexible materials at room temperature to produce the U-shaped flexible tube feeder, and the U-shaped flexible tube feeder structure is the tube supply part (3 ) And compressed air shield (4) and tube connection (5), the diameter of the tube connection (5) is fitted to the outside of the thermosetting resin impregnated tube (1) overlapping the end of the tube (1) It should be sealed by the high frequency fusion (10), so that the size to fit the outer diameter of the tube (1), the end diameter of the tube (1) is a citron flexible When smaller than the diameter of the tube connection part 5 of the tube feeder, the end diameter of the tube 1 is expanded by the tight band and the refraction screw jack (27) so that the inner diameter of the tube connection part (5) overlaps with the inner diameter of the tube feeder (5). And the width of the tube supply part 3 is made wider than the width | variety of the flat state, and the width | variety for the tube 1 to enter freely, and the inner end of the tube supply part 3 The compressed air shield plate 6 made of a thin material having excellent flexibility and elasticity is bonded to the upper and lower parts so as to be squeezed along the side of the inner end of the tube supply unit 3, and the compressed air shield plate 6 is made of a rubber sheet or It is made of any one of plastic sheet material, the size of the compressed air shield 6 is longer than the inner width of the tube supply, the width of the compressed air shield is protruded enough to surround the tube (1) do. In addition, in the case of using a film coating material on one side of the polyester fiber nonwoven fabric as the material of the compressed air shielding plate 6, only the nonwoven layer at the end of the inner side of the tube supply part 3 is cut off, and only the film layer is protruded. Ensure compressed air is shielded. The width of the compressed air shielding portion 4 connected between the tube supply portion 3 and the tube connecting portion 5 is wider than the length of the compressed air shielding plate 6 inside the tube supply portion, so that the compressed air shielding plate 6 It is made of a U-shaped flexible tube feeder which has a size that does not interfere with operation and has a structure of an injection nibble 7 capable of blowing compressed air and steam on the side of the tube connection part 5 of the compressed air shield, and a thermosetting resin. One side of the tube (1) impregnated with liquid is inserted through the tube supply part (3) to the tube connection part (5), and the end of the tube connection part and the end of the tube (1) impregnated with the thermosetting resin solution are aligned with sewing and high frequency fusion ( 10) to be integrated to produce an integrated citron type flexible tube feeder;
Water pipes and industrial pipes buried under the ground are excavated and cut, and sewage pipes are used to remove rust, scale, and sediments inside the pipeline 16 by using a high pressure water washer and a scraper or sandblast through the manhole. After the preparatory process for drying the pipe wall;
Integrate the integrated citron-type flexible tube feeder integrated with the tube 1 impregnated with the thermosetting resin solution to the inlet of the obsolete tube in the preparation process, and align the integral citron-type flexible tube feeder and the tube 1 with each other. After mounting the frame to the U-shaped flexible tube feeder in the width direction of the tube (1), the other end of the tube (1) is connected to the towing rope (18) in the winch (19), and then compressed air injection When the tube connection portion 5 is expanded by blowing into the tube 7, the tube 1 is drawn into the U-shaped flexible tube feeder, so that the tube 1 inverts itself and enters the old tube. When the tube is inserted halfway, the end of the tube (1) passes through the U-shaped flexible tube feeder, so that the towing rope (18) connected to the tube is released by the winch (19) and the tube reversal insertion process continuously completes the tube reversal. ;
The steam exhaust pipe 22 is connected to the inverted exposed tube at the end of the tube where the reversal insertion is completed by the integrated U-type flexible tube feeder, and the steam and compressed air are simultaneously supplied through the injection nibble 7 inside the inverted tube. (1) After the heat curing in the expanded state to cool the pipeline, and cut the cured tube protruding in front and rear of the pipeline, and then consisting of a tube curing and water flow process of connecting and repairing the cutting pipe is completed Self-reversal insertion regeneration method of thermosetting resin solution impregnated tube of water and sewage aging pipe by using type citron flexible tube feeder. According to claim 1, the U-shaped frame is composed of an outer frame 11 and the inner frame 12, the gap adjusting screw 13 and the screw handle 14 in a structure that can adjust the gap width of the outer frame and the inner frame. Thermosetting resin liquid impregnated tube self-reversal insertion regeneration method of water and sewage obsolete pipe using integral citron flexible tube feeder, characterized in that the gap is adjusted according to the reversal insertion speed of the tube and the thickness of the tube (1) by the operation of.

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