发明名称 |
Threaded tubular connection which is leak-proof under internal and external successive pressure loads |
摘要 |
A threaded tubular connection that is leak-proof for internal and external successive pressure loads including a male element and a female element. At least one of the male or female elements includes a lip between the threading and the free end of the element. The lip includes a first zone with a peripheral surface turned towards the other element on which a first metallic sealing surface is disposed that can be radially interference fitted against a corresponding second metallic sealing surface disposed on the other element. The lip includes a second zone located axially between the first zone and the corresponding threading. The radial stiffness of the second zone is less than that of the first zone and that of a third zone adjacent to the second zone in the direction of the threading, and the second zone can be radially deformed by a pressure exerted thereon. |
申请公布号 |
US8641100(B2) |
申请公布日期 |
2014.02.04 |
申请号 |
US20080529933 |
申请日期 |
2008.03.06 |
申请人 |
PATUREAU CLAIRE;TARTAR OLIVIER;VALLOUREC MANNESMANN OIL & GAS FRANCE;NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
PATUREAU CLAIRE;TARTAR OLIVIER |
分类号 |
F16L25/00 |
主分类号 |
F16L25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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