- 专利标题: Improving the bending behaviour of mechanically-lined rigid pipe
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申请号: US15538193申请日: 2015-12-18
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公开(公告)号: US10406577B2公开(公告)日: 2019-09-10
- 发明人: Gregory Alexandre Toguyeni
- 申请人: Acergy France SAS
- 申请人地址: FR Suresnes
- 专利权人: Acergy France SAS
- 当前专利权人: Acergy France SAS
- 当前专利权人地址: FR Suresnes
- 代理机构: Levy & Grandinetti
- 优先权: GB1423227.6 20141224
- 国际申请: PCT/IB2015/002551 WO 20151218
- 国际公布: WO2016/103038 WO 20160630
- 主分类号: F16L9/00
- IPC分类号: F16L9/00 ; B21C37/15 ; B21D39/04 ; F16L58/10 ; F16L1/20 ; F16L9/02 ; F16L58/08
摘要:
A method of making mechanically-lined pipe with primary expansion by plastically expanding a liner sleeve within an outer pipe, under lining pressure applied internally to the liner sleeve. On relieving the lining pressure, elastic radial contraction of the outer pipe makes a mechanical bond between the outer pipe and the liner sleeve. Then, secondary expansion of the outer pipe is performed under fixing pressure, which may be greater than the lining pressure, applied internally to the liner sleeve at an end portion of the pipe. This makes or strengthens a mechanical bond at the end portion. The resulting pipe joint has an end portion and a body portion inboard of the end portion. The body portion has a first, lesser bonding pressure between the outer pipe and the liner sleeve. The end portion has a second, greater bonding pressure between the outer pipe and liner sleeve.
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