HYDRAULIC EXPANDER ASSEMBLY AND CONTROL SYSTEM FOR SLEEVING HEAT EXCHANGER TUBES

摘要

A repair sleeve for installation in a parent tube by a sleeve expander of the type operable between an expanded state and an unexpanded state. The sleeve includes an elongated sleeve member having an outer wall and a bore sized and configured to receive the sleeve expander when the sleeve expander is in the unexpanded state. An engagement structure expends radially outward from the outer wall of the sleeve member for engagement with the interior surface of the parent tube. The engagement structure includes a plurality of circumferential teeth located along the outer wall of the sleeve member and at both ends of the sleeve member which are inclined to each other with respect to each of the ends. A plurality of peripheral lands are formed on the outer wall of the sleeve member, wherein the plurality of teeth are disposed between at least two of the peripheral lands located at each end of the sleeve.