Control method for heating furnace

Abstract

The invention relates to the control field of heating furnaces, and provides a control method for a heating furnace. On the basis of an original control method in which a heating furnace is controlled to heat or reduce heating according to a difference value of an actual outlet temperature Ts and a preset outlet temperature Ta of the heating furnace, an outdoor environment temperature Tx is introduced to correct the preset outlet temperature of the heating furnace, and a temperature of a to-be-heated medium at an outlet of the heating furnace is increased or reduced according to the outdoor environment temperature, so that influences of the outdoor environment temperature on a to-be-heated medium at a production and life terminal is reduced, deviation between an actual temperature and a preset temperature of the to-be-heated medium at the production and life terminal is decreased, demands on production and life are met better, and energy waste and waste gas emission are reduced.

Description

technical field [0001] The invention relates to the control field of heating furnaces, in particular to a control method of heating furnaces. Background technique [0002] The control system of the fully automatic burner of the heating furnace in the related art, such as figure 1 As shown, the control of the outlet temperature of the heated medium can be regarded as a closed-loop control loop. The control method is as follows: obtain the user instruction, obtain the outlet temperature set value Ta of the heated medium, and send the outlet temperature set value Ta to The controller 2, the controller 2 substitutes it into the first predetermined rule, the controller 2 issues instructions according to the outlet temperature set value Ta, the actuator 3 executes the instructions issued by the controller 2, and controls the controlled object 4 to heat the heated medium ; Detect the outlet temperature Ts of the heated medium through the temperature detection device 5, and transmi...

AI Technical Summary

Problems solved by technology

[0005] Since the heated medium needs to be transported from the outlet of the heating furnace to the production and living terminal through a certain length of pipeline, the actual temperature of the heated medium at the production and living terminal is greatly affected by the outdoor ambient temperature. When the set value of the outlet temperature is low When the output temperature is higher, it may not meet the needs of production and life. When the set value of the outlet temperature is higher, it may lead to waste of energy and increase of exhaust gas emissions.

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