METHOD FOR DETECTING THE OPERATING STATUS OF ROTATING DRUMS SUCH AS ROTATING TUBULAR FURNACES, AND APPARATUS FOR NON-CONTACT MEASURING THE SURFACE TEMPERATURE OF SUCH DRUMS

摘要

The invention relates to a method for detecting the operating state of rotating drums, such as rotating tubular furnaces, as well as an apparatus for carrying out this process. / P p DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS INVENTION, THE TEMPERATURE DISTRIBUTION OF THE SURFACE OF THE ROTATING TUBULAR OVEN IS MEASURED WITHOUT CONTACT USING AN INFRARED SENSOR 7, AND IS THEN TREATED IN CORRELATION WITH OTHER PROCESS CHARACTERISTIC PARAMETERS. THE SURFACE OF THE OVEN IS TESTED LONGITUDINALLY CONTINUOUSLY, AND SCREEN SHEETS 14, 14, PLACED IN FRONT OF REFERENCE RADIATORS 13, 13, ARE INTENDED TO FORM CONTROL SIGNALS AND DYNAMIC SELF-CALIBRATION. AN OPTICAL SYSTEM 7, BY ITS ASTIGMATIC IMAGE REPRODUCTION PROPERTIES, CORRECTS PROJECTION ERRORS. THE MEASURING SYSTEM, DISTRIBUTED IN FUNCTIONAL UNITS PHYSICALLY SEPARATED FOR ACQUISITION AND TREATMENT OF MEASUREMENTS, HAS INTERFACES PROVIDING TEMPERATURE MEASUREMENTS IN A FORM SUITABLE FOR DATA PROCESSING. / P P APPLICATION TO SURVEILLANCE OF PREGNANCY TUBULAR OVEN UNITS, IN PARTICULAR FOR THE DETECTION OF DAMAGE CAUSED BY THE TRIM AND RING FORMATIONS. / P