Heating control method and device for annealing furnace

Abstract

The present invention relates to the technical field of heating control of annealing furnaces, in particular to a heating control method and device for an annealing furnace. The method includes the steps: acquiring target output power of a heating section; if the target output power is not greater than a heating output lower limit value of a target burner group, closing all burners in the target burner group; if the target output power is not smaller than a heating output upper limit value of the target burner group, opening all the burners in the target burner group; and if the target output power is greater than the heating output lower limit value and is smaller than the heating output upper limit value, controlling the burners in the target burner group to be opened and closed according to the target output power. The burners in the target burner group are controlled to be opened and closed according to the target output power of the heating section as well as the heating output lower limit value and the heating output upper limit value of the target burner group; when the target output power is relatively small, all the burners in the target burner group are closed; when the target output power is relatively large, all the burners in the target burner group are opened; and therefore, the opening and closing times of the burners are reduced, and the heating control stability of the annealing furnace is improved.

Description

technical field [0001] The invention relates to the technical field of annealing furnace heating control, in particular to a method and device for annealing furnace heating control. Background technique [0002] There are several heating sections in the annealing furnace, and several rows of burners are set in each heating section. The strip steel is annealed through the heating sections in turn. During this process, the burners need to be switched on and off repeatedly to adjust the temperature of each heating section. During the heating control of the annealing furnace, if the heating control output is unstable, resulting in frequent opening and closing of the burner, it may cause deformation and cracking of the radiant tube in the burner due to sudden cooling and heat, and increase the consumption of the ignition electrode and the control valve. , and the abnormal fluctuation of the gas pressure in the heating pipeline will affect the production of steels that are more se...

AI Technical Summary

Problems solved by technology

During the heating control of the annealing furnace, if the heating control output is unstable, resulting in frequent opening and closing of the burner, it may cause deformation and cracking of the radiant tube in the burner due to sudden cooling and heat, and increase the consumption of the ignition electrode and the control valve. , and the abnormal fluctuation of the gas pressure in the heating pipeline, which affects the production of steel types that are sensitive to the atmosphere in the furnace

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