Method of cleaning pipes and tubes by pigging using water hammer shock waves
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United States of America Patent
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-
Feb 9, 1988
Issued Date -
N/A
app pub date -
Apr 30, 1986
filing date -
Aug 19, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Pipes or tubes, for example, in heat exchangers, can be cleaned internally using a water hammer shock wave with a relatively incompressible pig which travels at high velocity and a flushing liquid. FIG. 1 illustrates the use of launcher (14) to apply a very rapid pressure build-up by means of a liquid to one end of a pig located in a tube (11) to be cleaned.
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