The present application relates to a kind of embedded film
thermocouple array
heat flow sensor for slab
continuous casting crystallizer and on-line monitoring method, belong to
continuous casting process detection technical field.Sensor includes flexible insulating substrate, thin film
thermocouple array being arranged on the surface of flexible insulating substrate,
lead electrode being connected with thin film
thermocouple array, and protective packaging layer for covering thin film thermocouple array.Monitoring method includes, calibrating sensor is embedded in crystallizer
copper plate hot face, real-time acquisition potential
signal output by each
subunit of thin film thermocouple array;Local
heat flow density at each thermocouple
subunit is calculated, and the instantaneous
heat flow distribution cloud picture of crystallizer
copper plate surface is reconstructed by interpolation method;When local heat flow density exceeds preset threshold or heat flow fluctuation amplitude exceeds set range, prewarning
signal is sent.The present application realizes the in-situ, direct measurement of crystallizer hot face heat flow, response speed is fast, can realize transient heat flow measurement and the fine measurement of local heat flow distribution.