ENERGY ATTENUATION APPARATUS FOR A CONDUIT CONVEYING LIQUID UNDER PRESSURE, SYSTEM INCORPORATING SAME, AND METHOD OF ATTENUATING ENERGY IN A CONDUIT

摘要

An energy attenuation apparatus for a system conveying a liquid under pressu re is provided. The apparatus includes a liquid-conveying unit (23) or the like that includes three chambers (39, 40; 58; 59; 64; 55, 66) disposed in series . At least one of the chambers (58; 55, 66) contains no tube. A first tube (61 ) is disposed in one of the chambers and has a first end connected to and in fluid communication with an inlet or outlet end of its chamber. A second, fr ee end of the tube is spaced by an open gap from the outlet or inlet end of suc h chamber. The tube (61) has at least one aperture in the free end and/or on t he peripheral surface thereof for providing fluid communication between the tub e (61) and its chamber. A second tube (62) can be disposed in the remaining chamber.