Level probe for a shaft furnace

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

G - Physics

05

D

342/31, 341/97

G05D 3/12 (2006.01) C21B 7/24 (2006.01) F27B 1/20 (2006.01) F27B 1/28 (2006.01) G01F 23/00 (2006.01) F27D 21/00 (2006.01)

Patent

CA 2025888

The probe comprises a probe foot (16) which is suspended on a suspension means such as a cable or a chain (18) attached to a winding drum (20) mounted in a sealed casing (22) above the furnace (10) and which communicates with the interior of the latter via a vertical sleeve (24) passing through the upper wall of the furnace, an electric motor (30) associated with a reducer (32) for actuating the winding drum (20), and detection means (34,36) for detecting the unwinding and winding up of the winding drum (20) in order to control the speed and torque of the motor. The motor is a servomotor (30), the speed and torque of which are controlled automatically as a function of the detection means (34, 36) by comparison of the actual speed of the motor (30) with data of desired values dependent on the position of the probe foot (16).

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