Threaded connection comprising at least one threaded element...

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 17/08 (2006.01) F16L 15/04 (2006.01)

Patent

CA 2703928

A threaded tubular connection (1) comprises a female threaded portion (2) at the end of a first tubular component and a male threaded portion (3) at the end of a second tubular component, the female threaded portion (2) comprising a female thread (4), at least one female sealing surface (12) on its inner peripheral surface, at least one female axial abutment surface (8), the male threaded portion (3) comprising a male thread (5), at least one male sealing surface (13) on its outer peripheral surface, at least one axial abutment surface (7), and a lip (9) disposed between the sealing surface (13a) and an axial abutment surface (7) located at a free end of said threaded portion which is distant from the thread, the male thread (5) being made up into the female thread (4) such that at least one male axial abutment surface (7) is in contact with at least one female axial abutment surface (8), at least one male sealing surface being in interference contact with at least one corresponding female sealing surface, the portion of the lip (9) between the sealing surface and the axial abutment surface being radially distant from a corresponding surface of the other threaded portion, at least one leak channel (19) being provided in one of the threaded portions to place the chamber formed between the lip (9) and the corresponding surface of the other threaded portion in communication with the interior of the connection.

L'invention porte sur un raccord tubulaire fileté (1), qui comprend une partie filetée femelle (2) à l'extrémité d'un premier composant tubulaire et une partie filetée mâle (3) à l'extrémité d'un deuxième composant tubulaire. La partie filetée femelle (2) comprend un filetage femelle (4), au moins une surface d'étanchéité femelle (12) sur sa surface périphérique interne, au moins une surface de butée axiale femelle (8). La partie filetée mâle (3) comprend un filetage mâle (5), au moins une surface d'étanchéité mâle (13) sur sa surface périphérique externe, au moins une surface de butée axiale (7), et une lèvre (9) disposée entre la surface d'étanchéité (13a) et une surface de butée axiale (7) située à une extrémité libre de ladite partie filetée qui est distante du filetage, le filetage mâle (5) étant disposé sur le filetage femelle (4) de telle sorte qu'au moins une surface de butée axiale mâle (7) est en contact avec au moins une surface de butée axiale femelle (8), au moins une surface d'étanchéité mâle étant en contact d'interférence avec au moins une surface d'étanchéité femelle correspondante, la partie de la lèvre (9) entre la surface d'étanchéité et la surface de butée axiale étant radialement distante d'une surface correspondante de l'autre partie filetée, au moins un canal de fuite (19) étant réalisé dans l'une des parties filetées afin de mettre la chambre formée entre la lèvre (9) et la surface correspondante de l'autre partie filetée en communication avec l'intérieur du raccord.

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