Plug intended to be inserted into a duct on which a fluid...

Details Plug intended to be inserted into a duct on which a fluid... Plug intended to be inserted into a duct on which a fluid...

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/128 (2006.01) F16L 55/136 (2006.01)

Patent

CA 2632379

This plug comprises a body (16) having a longitudinal axis (X-X') and a radially expandable annular assembly (18). The annular assembly (18) has a peripheral surface (39) for pressing against a duct and a peripheral surface (57) for pressing against the body (16). The annular assembly (18) comprises, around the longitudinal axis (X-X'), a plurality of radial expansion blocks (40, 42). Each block (40, 42) has a first bearing surface (44), a second bearing surface (46) and two lateral surfaces (48A, 48B) positioned facing a respective lateral surface (48B, 48A) of at least one adjacent block (42, 40). The blocks (40, 42) can move relative to one another between a radially contracted configuration and a radially expanded inserted configuration in which each lateral surface (48A, 48B) of one block (40, 42) is in contact with the lateral surface (48B, 48A) of the adjacent block (42, 40).

Ce mandrin comprend un corps (16) présentant un axe longitudinal (X-X) et un ensemble annulaire (18) radialement expansible. L'ensemble annulaire (18) présente une surface périphérique (39) d'application sur un conduit et une surface périphérique (57) d'application sur le corps (16). L'ensemble annulaire (18) comprend, autour de l'axe longitudinal (X-X), une pluralité de blocs (40, 42) d'expansion radiale. Chaque bloc (40, 42) présente une première surface d'appui (44), une deuxième surface d'appui (46) et deux surfaces latérales (48A, 48B) disposées respectivement en regard d'une surface latérale (48B, 48A) d'au moins un bloc (42, 40) adjacent. Les blocs (40, 42) sont déplaçables les uns par rapport aux autres entre une configuration contractée radialement, et une configuration emboîtée expansée radialement dans laquelle chaque surface latérale (48A, 48B) d'un bloc (40, 42) est en contact avec la surface latérale (48B, 48A) du bloc adjacent (42, 40).

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