WO2016130021A3 - Method for connecting two pipe sections and threaded pipe connection - Google Patents

Method for connecting two pipe sections and threaded pipe connection Download PDF

Info

Publication number
WO2016130021A3
WO2016130021A3 PCT/NO2016/050026 NO2016050026W WO2016130021A3 WO 2016130021 A3 WO2016130021 A3 WO 2016130021A3 NO 2016050026 W NO2016050026 W NO 2016050026W WO 2016130021 A3 WO2016130021 A3 WO 2016130021A3
Authority
WO
WIPO (PCT)
Prior art keywords
pin
box
stress
connector
seal
Prior art date
Application number
PCT/NO2016/050026
Other languages
French (fr)
Other versions
WO2016130021A2 (en
Inventor
Arne Barrett Sele
Original Assignee
Arne Barrett Sele
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 Arne Barrett Sele filed Critical Arne Barrett Sele
Publication of WO2016130021A2 publication Critical patent/WO2016130021A2/en
Publication of WO2016130021A3 publication Critical patent/WO2016130021A3/en

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
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F16L15/009—Screw-threaded joints; Forms of screw-threads for such joints with straight 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
    • 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
    • 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
    • F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)
  • Materials For Medical Uses (AREA)
  • Dowels (AREA)
  • Earth Drilling (AREA)

Abstract

The object of the invention is a mechanical connector assembly for joining pipes conveying fluids such as hydrocarbons. The connector joins two internally threaded pins (7a) and (7b) attached to pipe sections (3) to an externally threaded box (1). Alternatively, a single pin (7) anchored to a pipe section may be anchored to a box (8) joined to the opposite pipe section (3). Redundant mechanical liquid seals provide a wedge seal (12) as well as a thrust seal (6) where an extension of the pin (7a) abuts against the other pin (7b) or where it bears against the box (8). The connection is made by applying external pre-stress to the pin, allowing the box (1) to be rotated with limited resistance before releasing the external pre-stress, resulting in a high level of pre-stress sufficient that the thrust shoulders (5) of the pin (1) will not separate before the applied load approaches the yield strength of the connector material. This provides a double liquid seal consisting of a thrust shoulder (6) in addition to a wedge seal (12) which may confine viscous material that further enhances extrusion pressure at the termination of the threads (2a and 2b). Alternatively, the joint consisting of a single pin (7) and box (8) may be pre-stressed, providing a sliding bearing allowing the two components to be rotated independently. By pre-stressing the threads, stress ranges are significantly reduced and provide very high fatigue capacity. Finally, ultimate strength of the connector both in tension and in compression will exceed that of the pipe section.
PCT/NO2016/050026 2015-02-13 2016-02-15 Threaded connector WO2016130021A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20150217A NO20150217A1 (en) 2015-02-13 2015-02-13 Threaded connector
NO20150217 2015-02-13

Publications (2)

Publication Number Publication Date
WO2016130021A2 WO2016130021A2 (en) 2016-08-18
WO2016130021A3 true WO2016130021A3 (en) 2016-11-24

Family

ID=56561402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2016/050026 WO2016130021A2 (en) 2015-02-13 2016-02-15 Threaded connector

Country Status (2)

Country Link
NO (1) NO20150217A1 (en)
WO (1) WO2016130021A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3529525B1 (en) * 2016-10-18 2021-12-01 Carrier Corporation System having pressurized fluid flowing therethrough comprising a coupling nut
US11614186B1 (en) 2020-03-25 2023-03-28 PTC Liberty Tubulars LLC Box connection for a pin with relieved thread region
CN112283469B (en) * 2020-10-30 2022-05-17 中国航发湖南动力机械研究所 Pipeline connection sealing structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155945B (en) * 1955-05-12 1963-10-17 Dalmine Spa Pipe screw connection for pressurized liquids or gases
GB2148439A (en) * 1983-10-19 1985-05-30 Vetco Offshore Ind Inc Pipe connector
US20050236834A1 (en) * 2004-04-21 2005-10-27 Baker Hughes Incorporated Expandable tubular connection
WO2011147189A1 (en) * 2010-05-25 2011-12-01 Lu Jinfu Thread connection structure for steel tube
US20140054887A1 (en) * 2012-08-24 2014-02-27 Vetco Gray Inc. Tubular Connector Having a Secondary Shoulder

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429904A (en) * 1981-07-06 1984-02-07 Dril-Quip, Inc. Self-aligning connector
US4762344A (en) * 1985-01-30 1988-08-09 Lee E. Perkins Well casing connection
CA2200289A1 (en) * 1996-03-20 1997-09-20 Hydril Company Pipeline coupling
FR2784734B1 (en) * 1998-10-14 2000-11-24 Novoplastic Sa ASSEMBLY FOR THE CONSTRUCTION OF A UNDERWATER TRANSPORT NETWORK OF FLUID, ENERGY, OR SIGNALS
NO319635B1 (en) * 2002-08-19 2005-09-05 Marine Direct Consultants Ltd Device for connecting rudder.
US7169239B2 (en) * 2003-05-16 2007-01-30 Lone Star Steel Company, L.P. Solid expandable tubular members formed from very low carbon steel and method
US7438329B2 (en) * 2005-01-11 2008-10-21 V&M Atlas Bradford, Lp Methods and connections for coupled pipe
MX2008012234A (en) * 2006-03-31 2008-11-25 Sumitomo Metal Ind Tubular threaded joint.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155945B (en) * 1955-05-12 1963-10-17 Dalmine Spa Pipe screw connection for pressurized liquids or gases
GB2148439A (en) * 1983-10-19 1985-05-30 Vetco Offshore Ind Inc Pipe connector
US20050236834A1 (en) * 2004-04-21 2005-10-27 Baker Hughes Incorporated Expandable tubular connection
WO2011147189A1 (en) * 2010-05-25 2011-12-01 Lu Jinfu Thread connection structure for steel tube
US20140054887A1 (en) * 2012-08-24 2014-02-27 Vetco Gray Inc. Tubular Connector Having a Secondary Shoulder

Also Published As

Publication number Publication date
NO20150217A1 (en) 2016-08-15
WO2016130021A2 (en) 2016-08-18

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