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US 5,975,141 AGranted
On-line variable orifice
AssigneeThe Detroit Edison Company
InventorMedhat A. Higazy
Life of this patent
Estimating the term…
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.
Claims10
A variable orifice for controlling the flow of pulverized coal in an air stream in a pipe leading to a coal burner, comprising
- a plurality of elongated flow restriction poles projecting radially through the pipe into the air stream to restrict the flow of coal,
- means mounting said poles in the pipe for radial adjustment, and
- means for radially adjusting said poles to vary the amount of restriction to coal flow.
Dependencies are inferred from the claim text.