FURNACE STATE-DETECTING METHOD FOR DIRECT CURRENT ELECTRIC FURNACE

• Main Author: KUNIKATA YASUO
• Format: Patent
• Language: English
• Published: 12.05.1995
• Edition: 6
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; OPEN SINTERING OR LIKE APPARATUS; OVENS; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

PURPOSE:To improve efficiency of power input by performing weighting by detecting factors of the noise level, the magnetic field strength and the integrating electrical quantity of an electric furnace and detecting the melt-down state of charging raw materials in the furnace on the basis of the fuzzy reasoning. CONSTITUTION:The noise level is measured from a microphone 4 through a noise meter 5 and a band pass filter 6, and the magnetic field strength is measured from a probe 8 by a gauss meter 9, so as to be input into a computer 7. In the computer 7, the fuzzy reasoning is performed by processing signals of the noise level and the magnetic field strength into the suitable form. The signal of the integraing electrical quantity is input into the computer 7 from a power inputting device 10 and used in the limit restriction for preventing the mulfunction. As a result of this reasoning, the electric power consumption rate is calculated, and respective parametes of the reasoning parts are adjusted by a learning function so that the value may become suitable. The higher- precision melt-down detection can be gradually performed by repeating this process by charge.