On-line three-dimensional temperature field D/A system of step type bar plate heating stove

Abstract

The invention relates to an online three-dimensional temperature field mathematical model system of a step plate blank heating furnace, belonging to the comprehensive technical field combining automation, computer software application and thermal energy technology. The invention consists of a heating furnace first level signal detection system, a network communication system, a three-dimensional temperature field model system and a data result verification system. By means of three-dimensional heat transfer mathematical model computing method, the invention calculates the dynamic temperature distribution of blank at each position inside the heating furnace within each interval of time through computer application software; moreover, calculation result is shown by means of isothermal surface method. The invention which is used in a walking beam type plate blank heating furnace realizes the optimal allocation of heating furnace heating system, thereby reaching the goals of improving product quality, energy saving and consumption reduction.

Description

Technical field: [0001] The invention relates to an online three-dimensional temperature field digital model system of a walking slab heating furnace. It integrates signal detection technology, automatic PLC technology, computer network communication technology, mathematical model technology, application software interface technology and database storage technology, and jointly completes the numerical simulation of the online three-dimensional temperature field of the heating furnace, and realizes the casting billet in the heating furnace. Dynamic tracking and dynamic temperature distribution. Background technique: [0002] In recent years, with the continuous improvement of iron and steel metallurgy technology, the output and quality of iron and steel products have been continuously improved. As an important link in the plate production line, the slab heating furnace plays a pivotal role in the entire steel rolling production process. The main reasons are: 1. The energy co...

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Problems solved by technology

The heating process of the slab in the heating furnace is a complex physical and chemical process including fluid flow, chemical reaction, heat transfer and mass transfer. Therefore, according to different research objects and research purposes, domestic and foreign scholars have proposed various forms of heating Furnace mathematical model, but no matter what kind of offline and online models, most of them adopt one-dimensional and two-dimensional furnace and billet heat transfer mathematical models, while three-dimensional heating furnace furnace, which considers heat transfer in three directions of length, width and height, The billet and cooling watermark mathematical model have not been found to realize online control on the heating furnace so far, so it is very difficult to know the temperature distribution of the billet in each position and time period in the heating furnace (that is, the dynamic temperature distribution)

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