Pulverized coal relative distribution meter

Details Pulverized coal relative distribution meter Pulverized coal relative distribution meter

1983-11-30

1985-04-23

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

73196, 7386108, G01F 164, G01F 174

Patent

active

045122008

ABSTRACT:
An apparatus for measuring the relative flow of pulverized coal in a plurality of pipes connected between a common pulverizer and respective burners comprises a plurality of electric charge sensors each disposed in a similar position on the plurality of pipes. The electric sensors sense an induced signal produced by charged pulverized coal particles. For unbiased flow, the induced signal is proportional to the amount of flow in each pipe as the charge properties of the particles from the pulverizer are the same for all the pipes. A circuit is connected to the sensors for obtaining a root means square value of the induced signal which in turn is compared to each induced signal respectively to obtain a measurement of the relative flow in each pipe. The induced signal can be integrated twice to improve the correlation between flow and charge amount since the integrated value is independent of radial position for the charges in the pipes.

REFERENCES:
patent: 3176513 (1965-04-01), Kriete
patent: 3359796 (1967-12-01), Dimick
patent: 4480947 (1964-11-01), Nagasaka

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