Variable speed pig for pipeline applications

Details Variable speed pig for pipeline applications Variable speed pig for pipeline applications

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/38 (2006.01) F16L 55/28 (2006.01)

Patent

CA 2423299

A variable speed pig (10) for movement within a pipeline having a plurality of venturi-shaped through passages (34) extending longitudinally to permit fluid within the pipeline to bypass the pig (10). The size and shape of these passages (34) may be varied to vary fluid pressure drop through the passages (34) and the pig (10) to correspondingly vary the speed of the pig (10) passing through the pipeline.

L'invention concerne un piston racleur à vitesse variable, destiné à se déplacer dans un pipeline et comportant plusieurs passages traversants, en forme de venturi, s'étendant longitudinalement, de manière à permettre au fluide circulant dans le pipeline de passer au-delà du piston racleur. Il est possible de varier la dimension et la forme de ces passages, de manière à faire varier la chute de pression du fluide à travers les passages et le piston racleur, afin de faire varier en conséquence la vitesse du piston racleur circulant à travers le pipeline.

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