Patent ID: 6338363
Filing Date: 2002-01-15
Classification: F16L

Abstract:
An energy attenuation device for a system conveying a liquid under pressure, said device comprising:a conduit means having an inlet opening for receiving a liquid from said system, and an outlet opening for returning said liquid to said system; a restrictor means disposed in said conduit means in such a way as to divide the interior of said conduit means into an inlet chamber having an inlet end and an outlet chamber having an outlet end, wherein said chambers are in fluid communication with one another via said restrictor means; and a first tube disposed in one of said chambers, wherein the other of said chambers contains no tube, wherein an annular space is formed between an inner peripheral surface of said conduit means and an outer peripheral surface of said first tube, wherein said first tube has a first end connected to and in fluid communication with said restrictor means or with said inlet or outlet end of said one chamber, and a second, free end that is spaced by an open gap from said inlet or outlet end of said one chamber or from said restrictor means, wherein said first tube has at least one aperture in said free end and/or on said peripheral surface thereof for providing fluid communication between said first tube and said one chamber.