Tool for the non-destructive removal of tubes from heat exchangers
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United States of America Patent
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May 15, 1990
Grant Date -
N/A
app pub date -
Dec 12, 1986
filing date -
Dec 18, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method for the non-destructive removal of tubes or of portions of tubes from heat exchangers, comprising: (a) the lengthwise cutting along at least one generatrix of one tube or of a plurality of tubes of said exchanger, to a depth at least equal to the thickness of the tube plate and to a width of up to 2% of the outer perimeter of the tubes; (b) the approaching to each other of the edges of the so-obtained cut section up to the complete release of the tube, or of the tubes, from the tube plate; (c) the possible crossways cutting of the tube, or of the tubes, to a height at least equal to double the thickness of the tube plate; and (d) the recovery of the tube, or of the tubes, by sliding same out of the said plate.
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