Hydraulic expander assembly and control system for sleeving heat exchanger tubes
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United States of America Patent
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-
Mar 4, 1997
Grant Date -
N/A
app pub date -
Sep 13, 1994
filing date -
Sep 13, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hydraulic expander assembly for installing a tube repair sleeve in a tube at a selected location relative to a tube defect or a tube support. The apparatus includes a hydraulic expander having at least one expandable bladder and adapted to receive the sleeve thereon. 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 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 and operative to control the expansion of the bladder in response to signals received from the detector.
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