Method and apparatus for removing extraneous matters
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United States of America Patent
Stats
-
Sep 8, 1987
Grant Date -
N/A
app pub date -
Jul 27, 1984
filing date -
Aug 1, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus for removing extraneous matters from cooling water used in a tubular heat exchanger such as a condensor is disclosed. When a pressure difference between the portions upstream and downstream of a filter element exceeds a predetermined threshold value set in advance in accordance with the flow rate of the cooling water, a blow-down operation is started to remove the extraneous matters scraped off of the outer peripheral surface of the filter element by a turning flow. The extraneous matters are removed at a rate of clogging of the filter element of 50%, irrespective of the flow rate of the cooling water. The clogging rate can be sensed accurately, and the blow-down operation is effected with necessary and sufficient frequency.
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