Automatically controlled melting furnace

Abstract

Abstract PURPOSE:To prevent the hanging in a melting furnace by monitoring the combustion state at all times, subjecting the brightness of the video to pattern recognition, converting the same to an electric signal and feeding the signal back to burner combustion pressure control. CONSTITUTION:One terminal of an image fiber 1 such as optical fiber is set in the peep window of respective burners of respective zones A-C and an automatic combustion state monitor device 3 is mounted to the other terminal so that the video signal is converted to the electric signal. The visual field of the peep window brightens when the hanging begins to arise and there is no fall of materials. The electric signals are classified to several stages by the area ratios of brightness and darkness and these signals are fed back to control valves for controlling the combustion pressure, etc. The results of the residual hydrogen quantity by the monitor in a combustion atmosphere measuring and adjusting device 5 are fed back to the orifice control mechanisms near the burners to adjust the combustion atmosphere. The quantity of the molten metal in a holding furnace is known from the signal of a tilting angle 6 and is sent to an automatic combustion pressure control device 4 by which the quantity is compared with a reference value and the combustion pressure is increased or decreased.

Inventors

• 👤 Haruo Tominaga
• 👤 晴夫 冨永
• 👤 Teruyuki Takayama
• 👤 高山　輝之
• 👤 Kazumoto Suzuki
• 👤 鈴木　和素

Bibliographic Details