Judgment system and method for off-line detection of thermal resistance installation quality of continuous casting steel plate

Abstract

The invention discloses a judgement system and method for detecting the mounting quality of a thermal resistance of a continuous casting steel plate offline. The method comprises the following steps:S1, adopting a far infrared heater to heat a to-be-detected thermocouple in a selected 3X3 area; S2, transmitting a signal generated when resistance varies along with the temperature to a high-precision temperature compensator; S3, adopting the high-precision temperature compensator to convert the signal into a corresponding digital signal, and carrying out error correction on the digital signal;S4, transmitting all digital signals to a computer integrally through a data acquisition card, and adopting the computer to judge damaged resistances and resistances mounted by mistake according to the decision algorithm; and S5, adopting the computer to display the corresponding temperature variation trend images of the nine resistances and mark the corresponding damaged resistances and resistances mounted by mistake. According to the method, the temperature is precisely controlled based on the far infrared technology.

Description

technical field [0001] The invention belongs to the technical field of temperature detection, and in particular relates to a judging technology for detecting the installation quality of a thermal resistance by using a dynamic temperature signal. Background technique [0002] The steel breakout in the continuous casting production process is the most harmful production accident, which has adverse effects on operation stability, product quality, personal safety and equipment life. The loss caused by a typical steel breakout accident may be close to 200,000 US dollars . Therefore, continuous casting enterprises and scientific and technological workers have invested a lot of time and money in the research and development of mold breakout forecasting system. The thermal resistance temperature measurement method currently used is to install thermal resistance on the crystallizer to detect temperature changes, judge and predict the possibility of steel breakout. However, in the i...

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Problems solved by technology

[0004] The disadvantage of these methods is that it is impossible to judge the thermal resistance that deviates from the installation position due to installation process errors.

The method of heating the continuous casting steel plate with water vapor as a whole is difficult to ensure the consistency of the overall temperature of the continuous casting steel plate, and it is uncertain whether the temperature difference detected by the thermal resistance is due to installation errors or uneven temperature of the continuous casting steel plate.

For gas torch bake heating, a similar problem arises due to the difficulty in ensuring constant control of the heating source

[0005] The purpose of the present invention is to overcome the problems existing in the prior art: 1) the heating temperature cannot be accurately controlled; 2) it is difficult to maintain the consistency of the heating temperature of the continuous casting steel plate during the whole test process; 3) the accuracy of the collected temperature cannot be judged

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