Structural connection between swivels in swibel stack

Details Structural connection between swivels in swibel stack Structural connection between swivels in swibel stack

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 25/00 (2006.01) F16L 13/14 (2006.01)

Patent

CA 2333612

A structural connection (3) between cylindrical housings of a swivel stack (10) is disclosed. A connector female half (6) is welded or machined to one end of a cylindrical housing of a product swivel (1). A pin male half (5) is welded or machined to an end of another product swivel (1) or a base member (2). An installation tool (7) pulls the pin (5) and box (6) together, radially expands the box (6), and then shrinks the box (6) onto the pin (5) so that non- helical engaging threads (20) wedge together to produce axial tension in the connection (3). The connection (3) is structurally strong enough to act as a structural connection (3) between product swivels (1).

L'invention concerne un raccord structurel (3) entre les boîtiers cylindriques d'une pile de têtes d'injection (10). Une moitié de raccord femelle (6) est soudée ou usinée à l'une des extrémités du boîtier cylindrique d'une tête d'injection (1), l'autre moitié de raccord mâle (5) étant soudée ou usinée à une extrémité du boîtier cylindrique d'une autre tête d'injection (1) ou à un élément de base (2). Un outil d'installation (7) tire l'une vers l'autre les moitiés mâle (5) et femelle (6) du raccord, élargit radialement la moitié femelle (6) puis la resserre autour de la moitié mâle (5) de manière à mettre en prise les filets non hélicoïdaux (20) afin de créer une tension axiale dans le raccord (3). Le raccord (3) possède une résistance structurelle suffisante pour servir de raccord structurel (3) entre les têtes d'injection (1).

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