The invention belongs to the technical field of
steelmaking continuous casting, and relates to an on-line
thermal monitoring system of
heat transfer symmetry of a crystallizer
copper pipe on a
continuous casting machine. The
system comprises the crystallizer
copper pipe which can monitor the
heat transfer symmetry, a temperature data collection and storage module and an industrial control computer. The on-line
thermal monitoring system is characterized in that a plurality of temperature measuring elements are embedded at the back of the
copper pipe, and the temperature measuring elements are distributed in a 'cross' shape and in a symmetrical form based on the central section of the copper pipe. The invention comprehensively utilizes on-site actual measuring data and a computer numerical
simulation technology, researches the
heat transfer symmetry of a crystallizer by monitoring the surface temperature of the copper pipe, determines longitudinal distribution of
heat flow of the crystallizer according to the transient
heat flow calculated by the temperature of the copper pipe, calculates the temperature field of a
continuous casting billet and the shell thickness of a solidification billet through a heat transfer
mathematical model, and finally compares the situation of symmetrical surfaces. The invention can provide a basis for structural design of the crystallizer copper pipe and production
process optimization of the crystallizer so as to promote the continuous
casting billet to uniformly grow in the crystallizer.