System for generating dry coal weight signal for coal feeder and control system based thereon
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United States of America Patent
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Feb 14, 1984
Grant Date -
N/A
app pub date -
Dec 3, 1982
filing date -
Dec 3, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for generating a dry coal weight signal is provided, wherein the moisture content of a coal feed to a solid fuel burner is determined, and the dry coal weight calculated on that basis. Moisture content is determined by measuring density of the coal being fed and/or the torque required to drive a head pulley about which the belt feeding the coal is led at a constant velocity. The dry coal weight signal can be communicated to the drive means, whereby the belt speed is accelerated or decelerated to maintain a constant supply of coal, on a dry weight basis, to the boiler. Also disclosed is a control system employing the dry coal weight signal for a plurality of control functions.
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