Improved seal

F - Mech Eng,Light,Heat,Weapons – 16 – J

Patent

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Details

F16J 15/02 (2006.01) E21B 17/07 (2006.01) E21B 33/12 (2006.01) F16J 15/12 (2006.01) F16L 23/18 (2006.01)

Patent

CA 2537153

An annular sealing element (12) to seal between metal surfaces for use in flanges, joints, packers and the like, located in oil and gas exploration and production equipment. The sealing element has inner and outer metal deformable surfaces (20, 22) joined at ends (24, 26), defining an interior volume (30) which is entirely filled with a plastic deformable material (28). The surfaces are arranged such that on compression of the element (12) from the ends (24, 26), the element will deform in a controlled manner on a cantilever principle. The volume of filler (28) and the interior volume (30) remain substantially equal during compression so that delamination does not occur. Thus the sealing element provides a seal combining the flexibility of elastomer seals with the integrity of a metal to metal seal.

L'invention concerne un élément (12) d'étanchéité annulaire servant à former un joint entre des surfaces métalliques, convenant pour des brides, des joints, des garnitures d'étanchéité etc. installés dans les équipements d'exploration et de production de pétrole et de gaz. Cet élément d'étanchéité comprend des surfaces (20, 22) métalliques déformables interne et externe, assemblées aux extrémités (24, 26), définissant un volume intérieur (30) qui est entièrement rempli avec un matériau (28) plastique déformable. Les surfaces sont arrangées de telle manière que lors de la compression de l'élément (12) à partir de ses extrémités (24, 26), l'élément se déforme d'une manière prédéterminée selon un principe de flexion en porte-à-faux. Le volume de matériau de remplissage (28) et le volume intérieur restent sensiblement égaux pendant la compression, ce qui permet d'éviter le décollement. Cet élément d'étanchéité permet ainsi de former un joint réunissant les qualités de flexibilité des joints élastomères et d'intégrité d'un joint métal sur métal.

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