Level probe for a shaft furnace

Details Level probe for a shaft furnace Level probe for a shaft furnace

1991-12-19

1992-11-24

Ip, Paul

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318652, 318560, 318432, 33715, 33716, G01B 310

Patent

active

051665891

ABSTRACT:
A probe includes a probe foot which is suspended on a cable or a chain attached to a winding drum mounted in a sealed casing above the furnace and which communicates with the interior of the latter via a vertical sleeve passing through the upper wall of the furnace, an electric motor associated with a reducer for actuating the winding drum, and a device for detecting the unwinding and winding up of the winding drum in order to control the speed and torque of the motor. The motor is a servomotor, the speed and torque of which are controlled automatically as a function of the detection device by comparison of the actual speed of the motor with data of desired values dependent on the position of the probe foot.

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