Energy-saving control method for discharge furnace door of heat-accumulating heating furnace

Abstract

The invention relates to an energy-saving control method for a discharge furnace door of a heat-accumulating heating furnace and belongs to the technical field of automatic control of the furnace door of the heating furnace. The energy-saving control method comprises the following steps that furnace door position detection equipment is added; the heating furnace receives a signal, the furnace door is lifted up and when the furnace door position detection equipment detects that the furnace door reaches a neutral open position, the furnace door stops an action and is in a semi-open state; when a support arm of a discharge machine moves forwards to a set position, the furnace door starts to ascend, and when reaching the altitude limit, the furnace door stops and is in a full-open state; when moving forwards to the forwards limit, the support arm of the discharge machine stops and starts to ascend to lift up a steel billet, and when reaching the altitude limit, the support arm of the discharge machine stops; the support arm of the discharge machine supports out the steel billet and moves back and stops when reaching the back limit; the furnace door starts to be closed and stops at the lower limit position, the support arm of the discharge machine descends and stops when continuously descending to the lower limit position after the steel billet is placed well; the support arm of the discharge machine stops the action when moving back to the rear limit. The energy-saving control method has the advantages that steel discharge time and furnace door full-open time are shortened; the atmosphere in the furnace can be controller better.

Description

technical field [0001] The invention belongs to the technical field of automatic control of a heating furnace door, in particular to an energy-saving control method for a discharge furnace door of a regenerative heating furnace. Background technique [0002] During the loading and unloading process of the regenerative heating furnace, the pull-in and pull-out method is often used to tap the steel. During the tapping process, the detection of the lifting position of the furnace door only has two positions: the upper limit and the lower limit. During the automatic tapping process, the furnace door rises first. When it is detected that it reaches the upper limit position, the furnace door stops and is in a fully open state. The tapping machine runs forward, lifts up the billet, retreats, descends and puts the billet on the roller table, etc. Back off to the rear limit, at which point the oven door is closed until it is detected that it has reached the lower limit. When the fur...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an energy-saving control method for the discharge furnace door of a regenerative heating furnace, which solves the problems of heat overflow in the furnace, cold wind outside the furnace and excessive gas consumption during the tapping process

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