External tube extraction device with a cylindrical collapsing wedge
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United States of America Patent
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Dec 12, 2006
Issued Date -
N/A
app pub date -
Jun 8, 2004
filing date -
Jun 8, 2004
priority date (Note) -
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Abstract
The invention is related to a tube extracting device for removing a tube from a conventional drum of a boiler or heat exchanger. The device includes a wedge which is driven into a tube hole between the tube outer wall and the hole in the drum that the tube is in. The wedge has longitudinal ridges on its internal surface and inwardly tapered edges at its end which is driven into the zone between the tube hole and the outer wall of the tube such that the tube may be readily inwardly collapsed. Upon retracting the wedge from the tube hole, the tube is removed from the drum inside the wedge.
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