Internal tube extracting device with a cylindrical collapsing wedge
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United States of America Patent
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-
Mar 27, 2007
Grant Date -
Dec 8, 2005
app pub date -
Jun 7, 2004
filing date -
Jun 7, 2004
priority date (Note) -
Expired
status (Latency 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 is positioned inside the drum. The device includes a hollow cylindrical wedge which cylindrically collapses a tube inwardly upon driving the wedge between the tube hole and outer tube wall. The wedge has longitudinal ridges on its inner surface and inwardly tapered edges at its end which is driven into the tube hole such that the tube may be readily inwardly collapsed. Upon retracting the wedge from the tube hole, the wedge engages the tube and the tube is removed from the drum inside the wedge.
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