SYSTEM OF AUTOMATIC CONTROL OF METAL HEATING IN HEATING FURNACES OF DISCONTINUOUS OPERATION

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to the metallurgy and can be used for automatic control of the thermal mode of the heating furnaces with discontinuous operation. System of automatic control of the metal heating in the heating furnaces of discontinuous operation containing block of task generation for metal thermal absorption, block determining the metal thermal absorption comprising heat meter and differentiator, three comparing units, air flow regulator, block of task generation for lining temperature change rate, block determining the lining temperature change rate, fuel flow regulator; first inputs of the first and second comparing units are connected with output of the block determining the metal thermal absorption, and second outputs are connected to output of the block of task generation for metal thermal absorption, output of the second comparing unit is connected with air flow regulator, output of the first comparing unit is connected to the block of task generation for lining temperature change rate, its output is connected with the first input of the third comparing unit, its second input is connected to the block determining the lining temperature change rate, and output of the third comparing unit is connected with fuel flow regulator, additionally block determining rate of scale thickness rise, block for setting as per scale minimum, forth comparing unit are included, at that output of the block determining the metal thermal absorption is connected with input of the block determining rate of scale thickness rise, its output is connected to the first input of the forth comparing unit, its second input is connected with the block for setting as per scale minimum, and output of the forth comparing unit is connected with air flow regulator.;EFFECT: improved quality of regulation of the furnace thermal modem and reduced fuel consumption for metal heating, improved quality of billets heating.;2 dwg