WO2008043237A1 - Tuyau métallique à garniture et son procédé de production - Google Patents

Tuyau métallique à garniture et son procédé de production Download PDF

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Publication number
WO2008043237A1
WO2008043237A1 PCT/CN2007/002608 CN2007002608W WO2008043237A1 WO 2008043237 A1 WO2008043237 A1 WO 2008043237A1 CN 2007002608 W CN2007002608 W CN 2007002608W WO 2008043237 A1 WO2008043237 A1 WO 2008043237A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
plastic
metal pipe
lined
pipe
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2007/002608
Other languages
English (en)
Chinese (zh)
Inventor
Ruquan Mo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG SUCCESSFUL MAN PIPE CO Ltd
Original Assignee
GUANGDONG SUCCESSFUL MAN PIPE CO Ltd
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 GUANGDONG SUCCESSFUL MAN PIPE CO Ltd filed Critical GUANGDONG SUCCESSFUL MAN PIPE CO Ltd
Priority to AU2007306853A priority Critical patent/AU2007306853A1/en
Priority to NZ576166A priority patent/NZ576166A/en
Priority to GB0906145A priority patent/GB2455675B/en
Publication of WO2008043237A1 publication Critical patent/WO2008043237A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement

Definitions

  • the present invention relates to a plastic-lined metal pipe and a method of manufacturing the same, and the metal pipe particularly refers to a metal pipe suitable for use in a water purification system, a building water supply system, and a fluid transportation in food, medicine, brewing, and the like.
  • Fluid transport in water purification systems, building water supply systems, and food, pharmaceutical, brewing, and other industries is usually pipelined.
  • these pipelines will appear due to oxidation during use. Corrosion, therefore, the life of such pipes is limited and the quality of the fluid being transported is difficult to guarantee.
  • the object of the present invention is to overcome the above-mentioned deficiencies and to provide a 4-plastic metal pipe and a manufacturing method thereof, which can effectively prevent a rusted metal pipe from contaminating a transported fluid during use.
  • the metal-lined metal pipe of the present invention is used for fluid transmission, including a metal pipe body, the metal pipe body, and
  • the inner wall is tightly lined with a first protective layer (2), and the outer wall of the metal tube is covered with a second protective layer (3).
  • the first protective layer (2) is made of a polyethylene or polypropylene material and is required to meet hygienic standards of non-toxic food grade. Confirmation
  • the second protective layer (3) is a polyvinyl chloride film.
  • the metal pipe body is made of an aluminum alloy pipe and is a seamless pipe body.
  • the method for manufacturing a metal-lined metal pipe of the present invention comprises the following steps:
  • a metal embryo tube as a metal tube body and a plastic endoderm tube as the first protective layer; b. placing the plastic endoderm tube in the metal embryo tube and forcibly stretching the metal tube Reducing its radial dimension to form an interference fit with the plastic endoderm;
  • the specific temperature at the time of the aging treatment in step c is -20 to 100 degrees Celsius.
  • the outer diameter of the plastic endoderm in step a is 2 to 3 mm smaller than the inner diameter of the metal pipe.
  • the metal embryo material is made of aluminum alloy
  • the material of the plastic inner tube is made of polyethylene or polypropylene.
  • the method further includes the step d: coating a plastic film as a second protective layer on the outer wall of the metal blank tube, made of polyvinyl chloride, and coated on the metal blank tube in the same process as steps a, b, and c. Outer wall.
  • the invention has the following advantages: the plastic inner tube of the inner layer is organically combined by lining the first protective layer of the non-toxic food grade on the inner wall of the metal pipe, thereby organically combining the advantages of the metal and the plastic.
  • the pipe is clean and hygienic, no scaling, no rust, and the metal pipe body can be separated from the fluid to prevent the rust of the metal pipe body from polluting the transported fluid; at the same time, the metal pipe body makes the pipe material have higher The mechanical strength, while the second protective layer coated on the outer surface of the pipe, allows the pipe to be better protected during application and construction.
  • Figure 1 is a schematic longitudinal cross-sectional view of a metal-lined metal pipe of the present invention
  • FIG. 2 is a schematic cross-sectional view of a metal-lined metal pipe of the present invention. detailed description
  • the plastic-lined metal pipe of the present invention has a three-layer structure, specifically including a metal pipe body 1, a first protective layer 2, and a second protective layer 3.
  • the metal pipe body 1 mainly serves to strengthen the mechanical strength of the pipe material, and various fittings can be used. Made of alloys for strength requirements in body applications. Commonly used materials such as steel, aluminum, iron, etc., are available. In the present embodiment, the aluminum alloy material is used, and the aluminum alloy material is light and durable, and is not easily rusted, so it is more practical than the steel material.
  • the first protective layer 2 is made of plastic, specifically polyethylene or polypropylene. In order to adapt to specific applications, polyethylene or polypropylene should meet non-toxic food grade requirements.
  • the first protective layer 2 is tightly compounded with the metal pipe body 1 by means of a lining method, and the metal pipe body 1 of the aluminum alloy material can be strongly protected from the pipe material without any binder. The fluid phase is isolated, thus further protecting the metal pipe body 1.
  • the thickness of the first protective layer 2 can be flexibly selected.
  • the inner diameter of the first protective layer 2 determines the cross-sectional area of the fluid when it is transported inside the tube, and the outer diameter of the first protective layer 2 is generally smaller than the inner diameter of the metal tubular body 1 by 2 to 3 Glutinous rice is better.
  • the second protective layer 3 is also a plastic material, specifically polyvinyl chloride, which is tightly laminated on the outer wall of the metal pipe body 1, so that the outer wall of the metal pipe body 1 is also protected from rust.
  • the manufacturing method of the village plastic pipe is embodied in the combination of the three-layer structure, which is different from the conventional production process in that the embryonic sample of the metal pipe body 1 of the present invention is subjected to cold drawing to cause radial deformation thereof.
  • the metal tube is tightly fitted over the inner tube made of plastic, and the inner tube forms the first protective layer 2.
  • both the first protective layer 2 and the second protective layer 3 can be bonded to the metal tube 1 in the same manner as described below.
  • the metal blank tube as the metal pipe body 1 is prepared in a predetermined size, here is an aluminum blank tube, and a polyethylene or polypropylene plastic endoderm, which is prepared as the first protective layer 2, a plastic endoderm sleeve
  • the outer diameter of the plastic inner tube is smaller than the inner diameter of the aluminum tube by 2 to 3 mm, so as to be adapted to the mutual bonding during subsequent processing.
  • the aluminum blank tube is forcibly stretched by a stretching machine through a die to reduce the radial size thereof to form an interference fit with the plastic endoderm, thereby forming a certain combination between the aluminum blank tube and the plastic endoderm.
  • the force does not fall off, and stable compounding can be achieved without adding any adhesive.
  • the repeated aging treatment of - 20 ⁇ 100 degrees Celsius is used to remove the material processing stress and the residual internal stress, so that the plastic linear expansion system and the aluminum alloy are close to each other, thereby ensuring Within the normal operating temperature range (20 to 80 degrees Celsius), there is no delamination and stretching.
  • the polyvinyl chloride plastic eccentric tube as the second protective layer 3 and the metal pipe body 1 can be further used by referring to the above method.
  • the metal-lined metal pipe of the present invention is formed.
  • the materials used for the first protective layer 2 and the second protective layer 3 should not be limited by the embodiment, that is, the material of the second protective layer 3 can be made of polyethylene or polypropylene. Production.
  • the plastic-lined metal pipe of the invention can be widely applied to the fluid transportation of the water purification system, the building water supply system, and the food, medicine, brewing and the like industries, and can also be used as the gas transportation of the gas system, and the performance is safe and reliable.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un tuyau métallique à garniture en plastique comprenant : un tuyau métallique (1), la paroi intérieure dudit tuyau (1) étant garnie d'une première couche protectrice (2) et la paroi extérieure étant recouverte d'une seconde couche protectrice (3). La première couche protectrice (2) est constituée d'un matériau en polyéthylène ou en polypropylène, la seconde couche protectrice (3) étant constituée d'un film de chlorure de polyvinyle. L'invention concerne également un procédé de production de tuyau consistant : a. à préparer une ébauche de tuyau métallique utilisée pour former ledit tuyau métallique (1) et une ébauche de tuyau en plastique utilisée pour former la première couche protectrice (2); b. à placer l'ébauche de tuyau en plastique dans l'ébauche de tuyau métallique et à étirer de manière forcée l'ébauche de tuyau métallique afin de réduire sa dimension radiale pour qu'il s'adapte grandement à l'ébauche de tuyau en plastique; c. et à exécuter un vieillissement de détente répété sur l'ébauche de tuyau métallique et sur l'ébauche de tuyau en plastique étirées à une température donnée pour éliminer les contraintes de traitement et les contraintes internes restantes du matériau.
PCT/CN2007/002608 2006-09-08 2007-08-31 Tuyau métallique à garniture et son procédé de production Ceased WO2008043237A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2007306853A AU2007306853A1 (en) 2006-09-08 2007-08-31 Metal pipe with lining and its manufacturing method
NZ576166A NZ576166A (en) 2006-09-08 2007-08-31 Metal pipe with inner polyethylene lining and outer pvc film
GB0906145A GB2455675B (en) 2006-09-08 2007-08-31 Metal pipe with lining and its manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2006200641891U CN200946722Y (zh) 2006-09-08 2006-09-08 一种覆膜保护衬塑金属管
CN200620064189.1 2006-09-08

Publications (1)

Publication Number Publication Date
WO2008043237A1 true WO2008043237A1 (fr) 2008-04-17

Family

ID=38733785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/002608 Ceased WO2008043237A1 (fr) 2006-09-08 2007-08-31 Tuyau métallique à garniture et son procédé de production

Country Status (6)

Country Link
CN (1) CN200946722Y (fr)
AU (1) AU2007306853A1 (fr)
GB (1) GB2455675B (fr)
NZ (1) NZ576166A (fr)
RU (1) RU2009113170A (fr)
WO (1) WO2008043237A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102537533B (zh) * 2011-12-13 2015-04-08 中联重科股份有限公司 物料输送机械、复合结构输送直管及其制造方法
CN104455789A (zh) * 2014-12-19 2015-03-25 常熟市精诚铝业有限公司 一种轻质铝合金管
CN105135082A (zh) * 2015-09-22 2015-12-09 山东龙泉管道工程股份有限公司 长寿命全防腐直饮水的埋置式预应力钢筒混凝土管
CN106040396A (zh) * 2016-04-25 2016-10-26 天津市真如果食品工业有限公司 一种用于冻干果粉的磨粉机
CN107120482A (zh) * 2017-06-07 2017-09-01 海宁亚丰塑业有限公司 一种铝塑管

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685344A (en) * 1991-12-12 1997-11-11 Itt Corporation Composite metal and method of making the same
US6030672A (en) * 1995-04-24 2000-02-29 Usui Kokusai Sangyo Kaisha Limited Corrosion- and chipping-resistant resin coating structure for stainless steel pipes
CN2397336Y (zh) * 1999-11-10 2000-09-20 湘潭市少雄铝业有限公司 无缝衬塑铝合金管
EP1260749A1 (fr) * 2001-05-25 2002-11-27 Uponor Innovation Ab Tube multicouche
US20030049400A1 (en) * 2001-09-13 2003-03-13 Smith Christopher W. Low permeation nylon tube with aluminum barrier layer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1800830B1 (fr) * 2005-12-23 2009-03-25 Uponor Innovation Ab Installation destinée à la fabrication d'un tube d'assemblage multicouches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685344A (en) * 1991-12-12 1997-11-11 Itt Corporation Composite metal and method of making the same
US6030672A (en) * 1995-04-24 2000-02-29 Usui Kokusai Sangyo Kaisha Limited Corrosion- and chipping-resistant resin coating structure for stainless steel pipes
CN2397336Y (zh) * 1999-11-10 2000-09-20 湘潭市少雄铝业有限公司 无缝衬塑铝合金管
EP1260749A1 (fr) * 2001-05-25 2002-11-27 Uponor Innovation Ab Tube multicouche
US20030049400A1 (en) * 2001-09-13 2003-03-13 Smith Christopher W. Low permeation nylon tube with aluminum barrier layer

Also Published As

Publication number Publication date
AU2007306853A1 (en) 2008-04-17
GB0906145D0 (en) 2009-05-20
RU2009113170A (ru) 2010-10-20
NZ576166A (en) 2012-01-12
CN200946722Y (zh) 2007-09-12
GB2455675B (en) 2011-11-09
GB2455675A (en) 2009-06-24

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