- 专利标题: Threaded connection for steel pipe
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申请号: US16465662申请日: 2017-12-27
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公开(公告)号: US11629560B2公开(公告)日: 2023-04-18
- 发明人: Yousuke Oku , Masaaki Sugino
- 申请人: Nippon Steel Corporation , Vallourec Oil and Gas France
- 申请人地址: JP Tokyo; FR Aulnoye-Aymeries
- 专利权人: Nippon Steel Corporation,Vallourec Oil and Gas France
- 当前专利权人: Nippon Steel Corporation,Vallourec Oil and Gas France
- 当前专利权人地址: JP Tokyo; FR Aulnoye-Aymeries
- 代理机构: Banner & Witcoff, Ltd.
- 优先权: JPJP2017-006313 20170118
- 国际申请: PCT/JP2017/046882 WO 20171227
- 国际公布: WO2018/135267 WO 20180726
- 主分类号: F16L15/04
- IPC分类号: F16L15/04 ; E21B17/042 ; F16L15/00 ; F16L15/06 ; F16L58/18
摘要:
A threaded connection for steel pipe with improved sealing performance is provided. A threaded connection (1) includes a pin (10) and a box (20). The pin (10) includes a pin shoulder surface (11), a pin sealing surface (12) and a male thread (13). The box (20) includes a box shoulder surface (21), a box sealing surface (22) and a female thread (23). The male thread (13) and female thread (23) are constituted by wedge threads. When the connection has been made up, the pin shoulder surface (11) is in contact with the box shoulder surface (21), the stabbing flank and load flank of the male thread (13) are in contact with the stabbing flank and load flank, respectively, of the female thread (23), and the pin sealing surface (12) is in contact with the box sealing surface (22). The shoulder angle is 4° or larger. The shoulder angle is the angle formed by each of the shoulder surfaces (11, 21) with a plane perpendicular to the pipe axis (CL) when the connection is not made up.
公开/授权文献
- US20190330930A1 Threaded Connection for Steel Pipe 公开/授权日:2019-10-31