High-efficiency intelligentized heating furnace control method

Abstract

The invention relates to the technical field of heating furnaces of heat treatment equipment applied in the steel rolling industry, in particular to a high-efficiency intelligentized heating furnace control method. The method adopts a PLC (programmable logic controller) system for field control and an upper computer operating system communicating and connected with the PLC system to form an intelligent control system, and moreover, the intelligent control system is utilized to efficiently, scientifically and intelligently control a heat furnace. The method is characterized in that the intelligent control system controls and sets the heating furnace in the following six aspects: (1) furnace temperature control; (2) internal pressure control; (3) air-fuel ratio control; (4) safety protection system control; (5) adoption of an human-machine interface (HMI) on the intelligent control system; (6) history data recording. The method can reasonably control heating temperature, furnace temperature and furnace pressure at each stage in real time, increases the heating utilization rate, has an outstanding effect in saving energy and reducing consumption, increases the production efficiency, reduces the production cost, and prolongs the furnace service life.

Description

technical field [0001] The invention relates to the technical field of heating furnaces for heat treatment equipment used in the steel rolling industry, in particular to a method for efficient and intelligent control of the heating furnaces. Background technique [0002] The heating furnace is the heat treatment equipment that must be equipped in the steel rolling industry. With the continuous development of industrial automation technology, modern rolling mills should be equipped with large-scale, highly automated walking beam heating furnaces, and their production should comply with high-yield, high-quality, low-consumption, energy-saving, pollution-free and automated production operations requirements in order to improve the quality of its products and enhance their market competitiveness. [0003] The production process of the heating furnace includes five major links: preheating, heating, soaking, furnace pressure / exhaust gas temperature control, and exhaust gas temper...

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Problems solved by technology

[0004] The existing walking-type heating furnace uses the operation of the instrument panel to realize the function of the heating furnace. The disadvantage is that the exhaust gas temperature is not uniformly controlled, and the air-fuel ratio adjustment of the temperature of the furnace section cannot be adjusted in a timely and reasonable manner, which inhibits the improvement of the heating capacity of the heating furnace.

With the continuou...

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