Patent ID: 7458752

Claim:
A suppression element ( 1 ) for vortex vibrations, comprising: an envelope ( 2 ) for at least partly enveloping a tubular element ( 100 ), wherein the envelope is modular to form, in circumferential direction of the tubular element ( 100 ), with similar suppression elements a tube ( 101 , 102 ) which, in operation, at least partly envelops the tubular element, and wherein the suppression element ( 1 ) has, in a longitudinal direction (A) of the suppression element ( 1 ), a first longitudinal direction (A) end ( 10 ) and an opposing second longitudinal direction (A) end ( 11 ); at least one projection ( 3 ) pointing away from the envelope for reducing the formation of vortices on the downstream side of the tubular element ( 100 ), wherein the projection ( 3 ) extends in the longitudinal direction (A) and lies at an inclined angle to the longitudinal direction (A); and a directing element ( 6 - 8 ) for positioning the suppression element ( 1 ) relative to another said suppression element such that the first end ( 10 ) of the suppression element ( 1 ) adjoins the second end ( 11 ) of said another suppression element; characterized in that the projection ( 3 ) extends from a first longitudinal direction (A) projection end of the projection ( 3 ) near the first end ( 10 ) of the suppression element ( 1 ) to a second longitudinal direction (A) projection end of the projection ( 3 ) near the second end ( 11 ) of the suppression element ( 1 ), and in that the directing element ( 6 - 8 ) comprises means for positioning the projection ( 3 ) such that its first projection end adjoins a second projection end of a projection of said another suppression element, enabling the projections of several said suppression elements to be connected to each other, as a result of which an elongate continuous projection can be obtained.