device for begrensning of trycktransienter at segmentation of rorsystem

摘要

During the sectioning of pipe systems for liquids pressure transients occur, which often overload the pipe and which can give cause to serious damages to pipes and plants. In particular pipe systems with long pipelines are sensitive to pressure transients. The specially shaped section valve counteracts pressure transients by means of cutouts or the like in the valve housing or in the movable valve body (plug, ball, disk) or in both. By a specially matched actuator the movable valve body is moved at low speed during the sensitive part (sensitive with respect to pressure transients) of the valve manoeuvre.