Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1997-04-03
1999-07-13
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15319, 122390, B08B 302
Patent
active
059209518
ABSTRACT:
A PLC based parameter sensing sootblower having a retractable lance tube that is extended and retracted by a drive motor. A PLC sensing circuit is used to sense when the lance tube is fully extended and/or fully retracted. The PLC sensing circuit can be configured to sense drive motor current, power, torque or other drive motor characteristics to determine when the lance tube has come to a hard stop upon extension. The PLC sensing circuit then calculates an approximate time window in which the lance should be fully retracted. The parameter sensor is configured to sense the drive motor current, power, torque or other characteristic only during the time window to determine when the lance tube is fully retracted while ignoring any motor load variations outside of the designated time window.
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Huston John T.
Moskal Thomas E.
Piccirillo David P.
Tooill Ryan M.
Diamond Power International, Inc.
Moore Chris K.
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