Method of sleeving damaged heat exchanger tubes

Details Method of sleeving damaged heat exchanger tubes Method of sleeving damaged heat exchanger tubes

1996-12-09

1998-08-11

Cuda, Irene

Ordnance

Firing devices

Safety

29727, 29890043, B23P 1526

Patent

active

057910464

ABSTRACT:
A method for installing a tube repair sleeve in a tube at a selected location relative to a tube defect or a tube support. The method includes using a hydraulic expander having at least one expandable bladder. The expander includes a stud having at least one conduit formed therein and a plurality of slidable expandable bladders mounted on the stud for radial expansion, each of the bladders in fluid communication with the conduit. A detector means is mounted on the expander and responsive to tube supports and defects in the tube. Finally, a control system is electrically connected with the detector means and operative to control the expansion of the bladder in response to signals received from the detector means.

REFERENCES:
patent: 4407150 (1983-10-01), Kelly
patent: 5301424 (1994-04-01), Snyder

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