An arrangement in a mechanical shaft seal

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

Patent

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F16J 15/34 (2006.01)

Patent

CA 2555354

The invention relates to an arrangement in a mechanical shaft seal. The arrangement comprises at least one sealing part rotating with a shaft in relation to a frame of the device and at least one sealing part fastened to the frame and/or to a separate frame part that is non-rotatable in relation thereto. The arrangement also comprises at least one additional part arranged to connect the sealing parts rotating in relation to the frame and/or the rotating sealing parts and at least one additional part arranged to connect the frame and the sealing part that is non-rotatable in relation thereto and to prevent the rotation of the sealing part in relation to the frame. At least one set of the additional parts is memory metal elements.

L'invention concerne un système relatif à un joint d'arbre mécanique. Ce système comprend au moins une partie d'étanchement (1, 2) tournant avec un arbre (14) par rapport à un châssis (13) du dispositif et au moins une partie d'étanchement (4) fixée au châssis (13) et/ou à une partie châssis séparée (3) qui est non rotative par rapport au châssis. Ce système comprend également au moins une partie supplémentaire (7) conçue pour être raccordée aux parties d'étanchement (1, 2) tournant par rapport au châssis (13) et/ou aux parties d'étanchement rotatives (1, 2) et au moins une partie supplémentaire (8) conçue pour être raccordée au châssis (13) et à la partie d'étanchement (8) qui est non rotative par rapport au châssis et pour empêcher la rotation de la partie d'étanchement (8) par rapport au châssis (13). Au moins un ensemble des parties supplémentaires (7, 8) est constitué d'éléments métalliques à mémoire de forme.

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