On-line variable orifice
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United States of America Patent
Stats
-
Nov 2, 1999
Grant Date -
N/A
app pub date -
Mar 9, 1998
filing date -
Mar 9, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A variable orifice for controlling the flow of pulverized coal and air in a pipe leading to a cool burner comprises a plurality of flow restriction poles extending into the pipe. The poles are radially adjustable to vary the amount of restriction to flow. Indicia are provided to indicate the position of the inner ends of the poles.
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