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WO2005085695A1 - Tube en acier inoxydable a paroi mince, a extremites filetees, et son procede de fabrication - Google Patents

Tube en acier inoxydable a paroi mince, a extremites filetees, et son procede de fabrication Download PDF

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Publication number
WO2005085695A1
WO2005085695A1 PCT/CN2005/000233 CN2005000233W WO2005085695A1 WO 2005085695 A1 WO2005085695 A1 WO 2005085695A1 CN 2005000233 W CN2005000233 W CN 2005000233W WO 2005085695 A1 WO2005085695 A1 WO 2005085695A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
thread
interface
threaded
diameter
Prior art date
Application number
PCT/CN2005/000233
Other languages
English (en)
Chinese (zh)
Inventor
Jinxu Cheng
Original Assignee
Cheng, Yuming
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34440409&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2005085695(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cheng, Yuming filed Critical Cheng, Yuming
Publication of WO2005085695A1 publication Critical patent/WO2005085695A1/fr

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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface
    • 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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F16L15/008—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with sealing rings

Definitions

  • the invention relates to a pipe, especially a pipe for conveying water.
  • Tap water can only be supplied to users through pipelines.
  • the secondary pollution of water quality by water pipelines is the main reason for the deterioration of tap water quality.
  • the development of inexpensive pipelines without pollution to water quality not only meets people's requirements for improving drinking water quality, but also protects people's health.
  • Stainless steel pipe has high strength, good toughness, and good performance in cleaning water quality, so it is the best material for transporting purified water and implementing direct drinking water.
  • connection of stainless steel pipes mainly includes welding or screwing.
  • welding or screwing the implementation of welded connections must have specific conditions, and the construction is difficult and expensive, so it is rarely used in small and medium diameter pipe connections; threaded connections are easy to install, but traditional threaded interface pipes (see Figure 2) Because the external thread interface 5 is formed by cutting, the thickness of the pipe wall needs to increase the cutting allowance of the depth 7 of the thread groove, so that the applied pipe wall 6 is thicker, which makes the cost of stainless steel pipe high and difficult to universally use.
  • An object of the present invention is to provide a thin-walled stainless steel screw-in threaded interface pipe with fast interface processing, convenient connection, and low application cost, and a manufacturing method thereof.
  • the thin-walled stainless steel screw-in threaded pipe of the present invention (see FIG. 1) is screwed into the pipe wall with rolling wheels, so that both ends of the pipe have an externally threaded interface 2 and an internally threaded interface 3.
  • both ends of the pipe have an externally threaded interface 2 and an internally threaded interface 3.
  • the thin-walled stainless steel threaded interface pipe of the present invention not only breaks through the cutting and forming threads, but also reduces the effective thickness of the pipe wall.
  • the pipe shape of the thread-forming thread of the present invention makes the thickness of the pipe end structure of the thin-walled stainless steel pipe greater than the thickness of the pipe wall of the pipe body, thereby increasing the rigidity of the pipe end, and solving the low rigidity of the thin-walled stainless steel pipe currently used due to the low end stiffness
  • the application problem that restricts the thickness of the pipe wall Therefore, the present invention is particularly suitable for the application of ultra-thin wall stainless steel pipes, and provides an ideal green environmental protection pipe for the low-cost application of stainless steel water pipes to solve the problem of secondary pollution of water quality in water pipelines at present.
  • Inner sleeve mold 20. Inner sleeve mold 19 and tube body 33 center axis of rotation; 21. Outer meshing roller; 22. Outer meshing center axis of rotation; 33. Tube body;
  • Fig. 7 Schematic diagram of the thread forming of the rolling wheel biting into the jacket die
  • Fig. 8 Schematic diagram of the two rollers' threads engaging with each other.
  • a method for processing a thin-walled stainless steel intermeshing thread interface pipe composed of an externally threaded interface 2 and an internally threaded interface 3 at both ends of an integrated body is as follows: two rolling wheel threads are engaged with each other! L ! The weave and the rolling wheel are engaged into the thread, and the inner sleeve mold thread is formed into a thread.
  • the outer surface of the roller 27 has a cylindrical thread 29 on the left and a conical thread 28 on the right.
  • the outer surface of the roller 30 has a cylindrical thread 31.
  • the pitch of the threads on the surface of the rollers 27 and 30 is the same, and the threads rotate in opposite directions. (That is, one is a left-handed thread and the other is a right-handed thread).
  • the outer diameter of the thread 29 is the same as the outer diameter of the thread 31. Let the surface threads 29, 31 of the rollers 27, 30 be at the mutual engagement point 32, and the peripheral clearance between the threads is equal to the wall thickness of the pipe end to be processed.
  • the end of the pipe body 33 to be processed (the internal diameter of the internal thread interface 3 tube end is larger than the external diameter of the external thread interface 2 tube end by two pipe wall thicknesses) is sleeved into the rolling wheel 30, and the remaining processing procedures are the same as the method A.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Metal Extraction Processes (AREA)

Abstract

L'invention concerne un tube en acier inoxydable à paroi mince, à extrémités filetées, ces dernières étant formées au moyen d'une roue de roulement s'engageant à l'intérieur du tube, la paroi du tube étant soumise à une déformation plastique par suite du filetage à la filière, le filetage des deux extrémités du tube pouvant se visser avec le filetage sur les autres extrémités, caractérisé en ce que l'épaisseur de la paroi du tube sur la rainure filetée, plus la hauteur du filet, est plus grande que l'épaisseur de la paroi du corps du tube. L'invention concerne également un procédé de fabrication du tube précité.
PCT/CN2005/000233 2004-03-04 2005-02-25 Tube en acier inoxydable a paroi mince, a extremites filetees, et son procede de fabrication WO2005085695A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2004100155579A CN1322262C (zh) 2004-03-04 2004-03-04 一种薄壁不锈钢啮入成型螺纹接口管子制造方法
CN200410015557.9 2004-03-04

Publications (1)

Publication Number Publication Date
WO2005085695A1 true WO2005085695A1 (fr) 2005-09-15

Family

ID=34440409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/000233 WO2005085695A1 (fr) 2004-03-04 2005-02-25 Tube en acier inoxydable a paroi mince, a extremites filetees, et son procede de fabrication

Country Status (2)

Country Link
CN (1) CN1322262C (fr)
WO (1) WO2005085695A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102688921B (zh) * 2012-06-25 2015-09-09 陈穗玲 一种滚擦成型管螺纹机及其螺纹制造方法
CN105156783A (zh) * 2015-08-27 2015-12-16 无锡贺邦金属制品有限公司 一种管接件及其加工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2189255Y (zh) * 1994-02-23 1995-02-08 谢清景 一种管与螺纹套环结合的管端头螺纹
CN2481432Y (zh) * 2001-04-19 2002-03-13 刘伟平 薄壁金属管攻丝机
JP2002130554A (ja) * 2000-10-25 2002-05-09 Rex Industries Co Ltd 薄肉管継手
CN1453493A (zh) * 2002-04-22 2003-11-05 陆倍清 不锈钢管滚压连接方法及滚压器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2134413Y (zh) * 1992-09-30 1993-05-26 汪光裕 衣架
CN2368625Y (zh) * 1998-12-30 2000-03-15 北京有色金属研究总院 一种螺旋型管加工装置
CN2472843Y (zh) * 2001-02-27 2002-01-23 天津宝成集团有限公司 螺纹管压轧机
CN1570443A (zh) * 2004-05-09 2005-01-26 程宇鸣 塑性成型螺纹接口薄壁不锈钢管和薄壁螺纹不锈钢管密封方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2189255Y (zh) * 1994-02-23 1995-02-08 谢清景 一种管与螺纹套环结合的管端头螺纹
JP2002130554A (ja) * 2000-10-25 2002-05-09 Rex Industries Co Ltd 薄肉管継手
CN2481432Y (zh) * 2001-04-19 2002-03-13 刘伟平 薄壁金属管攻丝机
CN1453493A (zh) * 2002-04-22 2003-11-05 陆倍清 不锈钢管滚压连接方法及滚压器

Also Published As

Publication number Publication date
CN1322262C (zh) 2007-06-20
CN1560498A (zh) 2005-01-05

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