WO2016130021A3 - Method for connecting two pipe sections and threaded pipe connection - Google Patents
Method for connecting two pipe sections and threaded pipe connection Download PDFInfo
- 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
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.
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)
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)
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)
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. |
-
2015
- 2015-02-13 NO NO20150217A patent/NO20150217A1/en not_active Application Discontinuation
-
2016
- 2016-02-15 WO PCT/NO2016/050026 patent/WO2016130021A2/en active Application Filing
Patent Citations (5)
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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