Compression sleeve tube repair

A device to be secured with a selected tube in a heat exchanger, the heat exchanger having a tube sheet and a plurality of tubes having open ends accessible from the lower surface of the tube sheet, said device comprising:

• a generally cylindrical tension member having a central body portion, a stem portion at its lower end and an enlarged head portion at its upper end;
• a generally cylindrical ring member concentrically disposed about the lower end of said body portion, said ring member including means for cooperating with the tube sheet lower surface to limit the upward travel of the ring member relative to the tube sheet;
• a generally cylindrical compression sleeve member surrounding said body portion between said head portion and said rig member, the upper and lower outer circumferential surfaces of the sleeve member being in the form of a flexible, integral rim defined by an external circumferential groove;
• said stem portion mounting means for limiting the downward travel of said ring member and means adapted to draw said tension member downward relative to said ring;
• said head and the upper portion of the sleeve member having oppositely facing, overlapping tapered surfaces;
• said ring and the lower portion of the sleeve member having oppositely facing, overlapping tapered surfaces;
• said tension member, compression sleeve member, and ring member operatively arranged such that when the tension member is drawn downward, the oppositely facing tapered surfaces advance wedge-like over each other, readially expanding the upper and lower circumferential outer surfaces at the ends said sleeve into deformed circumferential contact with the adjacent tube wall, forming respective upper and lower sals there against.