WO2020209000A1 - Matériau de revêtement de tuyau et procédé de production associé - Google Patents

Matériau de revêtement de tuyau et procédé de production associé Download PDF

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Publication number
WO2020209000A1
WO2020209000A1 PCT/JP2020/011022 JP2020011022W WO2020209000A1 WO 2020209000 A1 WO2020209000 A1 WO 2020209000A1 JP 2020011022 W JP2020011022 W JP 2020011022W WO 2020209000 A1 WO2020209000 A1 WO 2020209000A1
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WO
WIPO (PCT)
Prior art keywords
lining material
tubular resin
pipe lining
end portion
resin absorbent
Prior art date
Application number
PCT/JP2020/011022
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English (en)
Japanese (ja)
Inventor
和明 小倉
Original Assignee
株式会社湘南合成樹脂製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社湘南合成樹脂製作所 filed Critical 株式会社湘南合成樹脂製作所
Priority to KR1020217032423A priority Critical patent/KR102450177B1/ko
Priority to JP2021513528A priority patent/JPWO2020209000A1/ja
Publication of WO2020209000A1 publication Critical patent/WO2020209000A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B29C63/36—Lining or sheathing of internal surfaces using tubular layers or sheathings being turned inside out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure

Definitions

  • the present invention relates to a pipe lining material for pipeline rehabilitation made of a flexible tubular resin absorbent material and a method for manufacturing the same.
  • Patent Document 1 A rehabilitation method is known (Patent Document 1).
  • the end of the pipe lining used in this method is closed by tightening bolts and nuts and is airtightly covered with a sealed tube.
  • the pipe lining material is inverted and inserted into the existing pipe, the hot water supplied from the hot water hose attached to the end is shuffled to the pipe lining material, and the thermosetting resin is heated and cured to heat and cure the existing pipe. Is lined.
  • Patent Document 1 describes, as a method of attaching a hot water hose to the end portion of a pipe lining material, a method of fixing a mounting belt to a bolt that closes the end portion of the pipe lining material and attaching the hot water hose via the mounting belt. Has been done. Further, in the same document, a method of attaching a hot water hose to a closed tube that airtightly seals the end portion of the pipe lining material, or in the case of a two-layer structure pipe lining material, the end portion of the tubular resin absorbent material of the outer layer is extended. It also describes how to attach a hot water hose to its end.
  • Patent Document 2 in order to invert the pipe lining material, a pipe lining material having a certain length is drawn in through a slit-shaped inlet, the inlet is closed, the outlet is opened, and compressed air is chambered.
  • a configuration is described in which the pipe lining material is fed into the existing pipe and inverted and inserted into the existing pipe.
  • the outlet is sealed, the inlet is opened, and a new pipe lining material of a certain length is drawn into the chamber.
  • thermosetting resin impregnated in the pipe lining material is cured by hot water supplied from a hot water hose attached to the end of the pipe lining material.
  • a hot water hose attached to a closed tube that seals the end of the pipe lining material
  • the strength is weak because the closed tube is made of plastic, and the hot water hose is towed.
  • the end of the pipe lining material is hermetically sealed by a sealed tube, there is a drawback that the air accumulated in the pipe lining material cannot be discharged at the time of reversal, and the pressure resistance at the time of reversing and curing of the pipe lining material is poor. There is also the problem.
  • the contact surface between the inner layer and the outer layer is a non-woven fabric, so the structure should be airtight.
  • the outer layer is weak in strength and it is difficult to pull the hot water hose.
  • An object of the present invention is to provide a pipe lining material capable of smoothly passing a portion through a slit-shaped seal opening and a method for manufacturing the same.
  • the present invention It has a flexible tubular resin absorbent that can be impregnated with thermosetting resin and an airtight plastic film that covers the outer peripheral surface of the tubular resin absorbent, and is supplied from a hot water hose after being inverted and inserted into an existing pipe.
  • a tow belt that pulls a hot water hose and extends outward from the end of the pipe lining material is attached to the tubular resin absorber at the end of the pipe lining material.
  • the tubular resin absorber to which the tow belt is attached is woven with a rope in the width direction, and the end portion of the tubular resin absorber is closed.
  • the end portion of the pipe lining material and the tow belt are characterized in that the end portion on the side of the tow belt is open and the other end portion is covered with a closed tube which is heat-welded to the end portion of the pipe lining material.
  • the present invention has a single-layer or multi-layer flexible tubular resin absorbent that can be impregnated with a thermosetting resin, and an airtight plastic film that covers the outer peripheral surface of the tubular resin absorbent, and after being inverted and inserted into an existing pipe, A method for producing a tube lining material in which a thermosetting resin is heated and cured by hot water supplied from a hot water hose.
  • a step of installing the tubular resin absorbent material in the tubular resin absorbent material at the end portion and cutting both sides in the width direction of the pipe lining material end portion The process of turning over the tubular resin absorbent material in the direction opposite to the end of the tube lining material to expose the internal tubular resin absorbent material, A step of towing a hot water hose and attaching a tow belt extending outward from the end of the pipe lining material to the exposed tubular resin absorbent material.
  • the tubular resin absorbent material is woven with a rope and closed, the surface of the end portion of the pipe lining material has less unevenness, and the end portion can have a flexible structure.
  • the end portion of the pipe lining material can smoothly pass through the slit-shaped seal opening, so that the hot water hose connected to the end portion can be smoothly guided into the existing pipe.
  • the end of the tow belt side of the sealed tube that seals the end of the pipe lining material is open, and the air mixed in the tubular resin absorber is discharged to the outside from the open end, so it can be used as a pipe lining material.
  • the air pool is eliminated and the lining quality can be improved.
  • FIG. 5 is a cross-sectional view taken along the line DD of FIG. 5a.
  • FIG. 6 is a cross-sectional view taken along the line EE of FIG. 6a. It is a top view when the end part of a pipe lining material and a tow belt are covered with a closed tube.
  • FIG. 5 is a cross-sectional view taken along the line FF of FIG. 7a. It is explanatory drawing which shows the state which the pipe lining material is inverted and inserted into the existing pipe, and the pipe lining material is heated and hardened. It is a front view which shows the pipe lining material of a multilayer structure. It is sectional drawing which shows the state which attached the tow belt to the pipe lining material of a multilayer structure. It is the top view when the end part of the tube lining material of a multi-layer structure and the tow belt are covered with a closed tube.
  • 11 is a cross-sectional view taken along the line GG of FIG. 11a.
  • FIG. 1 shows a pipe lining material 10 for lining the inner wall surface of an existing pipe.
  • the tube lining material 10 is made of a flexible tubular resin absorbent 11 and a highly airtight plastic film 12 such as polyethylene, polypropylene, nylon, or vinyl chloride that covers the outer peripheral surface (which becomes the inner peripheral surface after inversion). It has become.
  • the tubular resin absorbent 11 is a non-woven fabric using plastic fibers such as polyamide, polyester, or polypropylene, a woven fabric, or a mat, or a woven fabric using glass fibers, or a mat, or a non-woven fabric in which the above plastic fibers and glass fibers are combined.
  • a woven fabric, or a mat a strip-shaped resin absorbent having a predetermined width and a predetermined length is rolled, and both end portions 11a thereof are abutted and sewn.
  • a tape 11b made of polyurethane, polyethylene or polypropylene is adhered to the butt portion 11a, and the plastic film 12 is heat-welded to the entire outer peripheral surface of the rolled tubular resin absorbent material 11.
  • the tip portion 10a of the pipe lining material 10 is folded back and attached to a reversing nozzle of a reversing machine (not shown), and a tubular resin absorbing material 13 is inserted into the end portion 10b.
  • the tubular resin absorbent 13 is woven with a rope and used to close the end portion 10b of the pipe lining material 10, and is also used to attach a tow belt that pulls a hot water hose, as will be described later.
  • the tubular resin absorbent 13 is made of the same material as the tubular resin absorbent 12, is thinner than that, and is provided at the end portion 10b over a predetermined length in the pipe length direction.
  • the tubular resin absorbent 13 is fixed at a plurality of locations on the tip portion 10a side of the tube lining material by heat welding or by using an adhesive or the like so as not to be displaced from the tubular resin absorbent 11.
  • FIG. 2a is a top view of the flattened pipe lining material 10
  • FIG. 2b is a cross-sectional view taken along the line AA of FIG. 2a
  • FIG. 2c is a front view seen from the line BB of FIG. 2a. It is a figure.
  • the tubular resin absorbent 13 is provided at the terminal portion 10b of the pipe lining material 10 toward the tip portion 10a over a predetermined length t1.
  • FIG. 3 the process of processing the terminal portion 10b of the pipe lining material 10 is illustrated.
  • the cross-sectional view shown in each figure is not an actual size but an enlarged view in the vertical direction in order to clearly show the cross-sectional structure.
  • the terminal portion 10b of the pipe lining material 10 has a width of t2 in the length direction on both sides of the pipe lining material in the width direction (vertical direction in FIG. 3) in a state where the pipe lining material is flattened. It is cut diagonally with a length of w1 in the direction, and the cut surface is indicated by reference numerals 10c and 10d.
  • the width w2 of the pipe lining material 10 is set to 270 mm in a flat state
  • t2 is set to 200 mm
  • w1 is set to 80 mm. Will be done.
  • specific set values of various dimensions will be described with parentheses after the reference numerals, and the set values indicate values when the pipe lining material 10 has a diameter of 200 mm and a thickness of 7.5 mm.
  • the outer tubular resin absorbent material 11 is turned over so that the inner tubular resin absorbent material 13 is exposed over a predetermined length.
  • a long tow belt 14 for pulling the hot water hose is placed on the exposed tubular resin absorbent 13 in the center when viewed in the width direction of the pipe lining material 10. It is attached so as to extend to the outside of the material.
  • the tow belt 14 is a belt-shaped belt having a length t6 (about 850 mm) and a width w3 (70 mm), which is made of polyester and has a tensile strength of 2 tons or more.
  • the tow belt 14 is attached to the tubular resin absorbent material 13 by folding back and sewing one end 14a thereof, whereby the tow belt 14 is firmly attached to the tubular resin absorbent material 13.
  • tubular resin absorbent material 13 when viewed in the length direction of the pipe lining material, t3 (100 mm) from the inner end of the cut surface 10c and 10d, and t4 (50 mm) from the end 14a to t4 (50 mm) of the tow belt 14.
  • Rope braided holes 13a (10 in the embodiment) are formed on both sides of the tow belt 14 at a pitch of 20 mm.
  • the tubular resin absorbent 13 is woven with a rope 15 made of PP (polypropylene) resin through a rope weaving hole 13a and closed.
  • a space 13b is formed in the central portion of the tubular resin absorbent material 13, and the resin injection pipe 16 is inserted into this space 13b to form the tubular resin absorbent materials 11 and 13. This is done so that the thermosetting resin can be impregnated.
  • the tow belt 14 may be directly attached to the rope 15.
  • the tubular resin absorbent 13 is woven with the rope 15, the tubular resin absorbent 11 is turned back to its original state.
  • the end portion 10b of the pipe lining material 10 and the tow belt 14 have the same diameter as the outer diameter of the pipe lining material 10 and have a length extending outward from the end portion 10b. It is covered with a closed tube 17 of t5 (500 mm), for example, composed of three layers of PE (polyethylene), NY (nylon) and PE (polyethylene).
  • This coating is performed by opening one end of the sealing tube 17 on the tow belt side as an open end 17a and heat-welding the other end 17b to the plastic film 12 of the pipe lining material end portion 10b to seal it airtightly.
  • the length t5 of the sealing tube 17 extending outward from the end portion 10b of the pipe lining material is set to be a plurality of times the width w3 of the tow belt 14, for example, about 7 times or more.
  • the end portion 10b of the pipe lining material 10 and the portion 17'shown by the alternate long and short dash line are cut off according to the shape of the tow belt 14.
  • the portion indicated by the alternate long and short dash line that has been cut out and divided into two pieces is heat-welded and airtightly sealed so as to create a small space between the pipe lining material end portion 10b and the traction belt 14.
  • a loop 14b is formed at the other end of the tow belt 14, and a hot water hose 18 is attached to the tow belt 14 via a rope 19 attached to the loop 14b.
  • the tubular resin absorbers 11 and 13 have thermosetting properties such as unsaturated polyester resin, vinyl ester resin, and epoxy resin before attaching the tow belt 14 and the sealing tube 17 or before attaching the hot water hose.
  • the resin is impregnated.
  • the thermosetting resin is impregnated after the sealing tube 17 is attached, the resin injection pipe 16 is inserted into the space 13b of the tubular resin absorbent 13 from the open end 17a of the sealing tube 17 as shown in FIG. 6b. To impregnate the resin.
  • the pipe lining material 10 having the end portion processed in this way is attached to the reversing nozzle of the reversing machine (not shown) with the tip portion 10a folded back.
  • the pipe lining material 10 is inserted into the existing pipe while being inverted.
  • the air pressure is maintained and a large number in the length direction of the hot water hose 18 is maintained.
  • Hot water is sprayed onto the pipe lining material 10 from the provided injection holes (not shown). By this spraying, the thermosetting resin impregnated in the tubular resin absorbents 11 and 13 is cured, and then the portion protruding from the existing pipe 20 is cut, and the lining work is completed.
  • the end portion is closed by knitting a tubular resin absorbent material with a rope instead of tightening bolts as in the conventional case, so that the end portion surface is uneven. Since there are no metal fittings such as bolts and nuts, the end part has a flexible structure, and it can be effectively used for a reversing device that reverses and inserts the pipe lining material by passing it through the slit-shaped seal opening. it can. Further, in the closing by knitting the rope, the rope 15 is a pipe lining material because the additional tubular resin absorbent material 13 inserted in the tubular resin absorbent material 11 is woven instead of the original tubular resin absorbent material 11 being woven. The above-mentioned effect can be further improved without being exposed to the outer surface of 10.
  • the end portion is closed by bolting by tightening two bolts, whereas in this embodiment, a plurality of rope knitting holes 13a are provided and tightly knitted by the rope 15 to form a pipe lining material. Since the end portion is closed, the pressure resistance of the pipe lining material can be improved.
  • the sealing tube 17 that seals the end portion 10b of the pipe lining material 10 has the tow belt side end portion open as an open end 17a, so that the tubular resin absorbers 11 and 13 are impregnated with the resin.
  • the air mixed in is discharged from the ends of the tubular resin absorbers 11 and 13 to the outside through the open end 17a of the sealing tube 17 due to the inverted air pressure as shown by the dotted arrows in FIG. It is discharged.
  • the pipe lining material 10 has no air pool, so that the lining quality can be improved.
  • the length t5 extending outward from the terminal portion 10b of the pipe lining material 10 of the closed tube 17 is long and the tow belt 14 is contained in this portion, the airtightness is improved and the pipe lining material 10 is inverted. At the time of curing, it is possible to obtain the effect that hot water and air are less likely to leak to the outside and the pressure resistance can be improved.
  • Example 1 the pipe lining material 10 was a single-layer tubular resin absorbent material, but the pipe lining material may be made of a multi-layer tubular resin absorbent material.
  • a tube lining material is shown in FIG.
  • the tube lining material 30 has two layers, a tubular resin absorbent material 31 as an outer layer and a tubular resin absorbent material 33 as an inner layer, and a plastic film 32 of the same material as the plastic film 12 is provided on the entire outer peripheral surface of the tubular resin absorbent material 31. Is heat welded.
  • the tubular resin absorbents 31 and 33 both have the same length in the longitudinal direction, are made of the same material as the tubular resin absorbent 11 of the tube lining material 10, and have the same layer thickness, and any of the tubular resin absorbents 31 and 33 has the same layer thickness. Has a structure that can be impregnated with a thermosetting resin.
  • the diameter of the tubular resin absorbent material 33 is set so that there is no gap between the layers of the tubular resin absorbent material 31 and 33 when the pipe lining material 30 is expanded in a circular cross section, and the tubular resin absorbent materials 31 and 33 are set to each other. It is fixed by adhesive or heat welding at multiple locations so that it does not shift.
  • the tubular resin absorbent material 33 has a smaller diameter than the tubular resin absorbent material 31, so that the tubular resin absorbent material 33 has a bent portion 33a as shown in FIG. It can be folded in the state.
  • the end portion can be processed in the same manner as with the single-layer pipe lining material 10.
  • the terminal portion of the pipe lining material 30 is cut on both sides in the width direction of the pipe lining material 30 in a flat state, and the tubular resin absorbent 33 of the inner layer has a predetermined length.
  • the tubular resin absorbent 31 in the outer layer is turned over so as to be exposed across.
  • a tow belt 14 is sewn on the exposed upper portion of the tubular resin absorbent 33 by folding back one end 14a at the center in the width direction of the pipe lining material 30.
  • the tubular resin absorbent material 33 is woven with a rope 15 at the same place as the tubular resin absorbent material 13 of the first embodiment, and the end portion thereof is closed.
  • the braiding with the rope 15 a space is created in the central portion of the tubular resin absorbent material 33 as in the first embodiment, and the resin injection pipe 16 is inserted into this space, and the thermosetting resin is inserted into the tubular resin absorbent materials 31 and 33. Is done so that it can be impregnated.
  • the tubular resin absorbent 31 is turned over to the original state as in the first embodiment.
  • one end of the end portion 30b and the tow belt 14 of the pipe lining material 30 is opened as an open end 17a and the other end 17b is the end portion of the pipe lining material, as in the first embodiment. It is covered with a closed tube 17 that is heat welded to 30b.
  • the portion 17'shown by the alternate long and short dash line is cut off according to the shape of the end portion 30b of the pipe lining material 30 and the tow belt 14, and the portion indicated by the alternate long and short dash line is cut out and divided into two pieces.
  • It is heat-welded and airtightly sealed so that a small space is formed between the pipe lining material end portion 30b and the traction belt 14.
  • a loop 14b is formed at the other end of the tow belt 14, and a hot water hose 18 is attached to the tow belt 14 via a rope 19 attached to the loop 14b.
  • Example 2 the same effect as in Example 1 can be obtained.
  • the tow belt can be attached by using the tubular resin absorbent material in the inner layer. Therefore, as in the first embodiment, the tubular resin absorbent material 13 for attaching the tow belt. There is an advantage that there is no need to interpolate.
  • the pipe lining material has a multi-layer structure of two or more layers, the tow belt is attached to the tubular resin absorbent material of the inner layer adjacent to the outermost layer.
  • Tube lining material 11 Tube lining material 11
  • Tubular resin absorber 12 Plastic film 14
  • Tow belt 15 Rope 16
  • Resin injection pipe 17 Sealed tube 18
  • Hot water hose 20 Existing pipe 30
  • Tube lining material 31 33 Tubular resin absorber

Abstract

Dans la présente invention, un matériau tubulaire 13 d'absorption de résine au niveau d'une partie terminale d'un matériau de revêtement de tuyau 10 présente, fixée à celui-ci, une courroie de traction 14 qui tire un tuyau d'eau chaude 18 et qui s'étend à partir de la partie d'extrémité de matériau de revêtement de tuyau vers l'extérieur. La courroie de traction et la partie terminale du matériau de revêtement de tuyau sont recouvertes par un tube d'étanchéité 17 dont la partie d'extrémité 17a sur le côté de la courroie de traction est ouverte et la partie d'extrémité 17b de l'autre côté est soudée à la chaleur sur la partie d'extrémité de matériau de revêtement de tuyau. Le matériau tubulaire 13 d'absorption de résine, auquel la courroie de traction a été fixée, est tissé dans le sens de la largeur avec un câble 15, qui ferme hermétiquement la partie terminale du matériau tubulaire d'absorption de la résine.
PCT/JP2020/011022 2019-04-11 2020-03-13 Matériau de revêtement de tuyau et procédé de production associé WO2020209000A1 (fr)

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Application Number Priority Date Filing Date Title
KR1020217032423A KR102450177B1 (ko) 2019-04-11 2020-03-13 관라이닝재 및 그 제조방법
JP2021513528A JPWO2020209000A1 (fr) 2019-04-11 2020-03-13

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Application Number Priority Date Filing Date Title
JP2019-075496 2019-04-11
JP2019075496 2019-04-11

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WO2020209000A1 true WO2020209000A1 (fr) 2020-10-15

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KR (1) KR102450177B1 (fr)
TW (1) TWI816027B (fr)
WO (1) WO2020209000A1 (fr)

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KR102538817B1 (ko) 2022-11-08 2023-05-31 국방과학연구소 폭발압접을 이용한 내열금속 라이닝 튜브의 제조 방법

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JP2012136037A (ja) * 2012-04-05 2012-07-19 Shonan Plastic Mfg Co Ltd ライニング材及び管路ライニング工法

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