Method and system for monitoring temperature of outer wall of furnace bottom of electric arc furnace

Abstract

The invention provides a method and system for monitoring the temperature of the outer wall of a furnace bottom of an electric arc furnace. The system comprises the electric arc furnace, multiple infrared temperature detectors, a PLC and an upper computer. The multiple infrared temperature detectors are installed on a foundation of a cradle device of the electric arc furnace through supports and are used for scanning the furnace bottom of the electric arc furnace to obtain real-time temperature data of the furnace bottom. The PLC is connected with the multiple infrared temperature detectors through signal lines, used for receiving the real-time temperature data of the infrared temperature detectors and sends the real-time temperature data to the upper computer. The upper computer is connected with the PLC through the Ethernet and is used for conducting early warning according to a preset early warning value and the real-time temperature data. According to the method and system for monitoring the temperature of the outer wall of the furnace bottom of the electric arc furnace, real-time online continuous monitoring of the temperature of the outer wall of the furnace bottom of the electric arc furnace is achieved, the refractory material corroded condition of the furnace bottom can be pre-warned through monitoring of the temperature, and safety accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to the monitoring technology of the temperature of the outer wall of the bottom of an electric arc furnace, and specifically a method and system for monitoring the temperature of the outer wall of the bottom of an electric arc furnace. Background technique [0002] At present, domestic steelmaking enterprises have various types of electric arc furnaces, and all electric arc furnaces adopt various means to prolong their service life as much as possible in order to generate better economic benefits. Therefore, in order to prolong its service life, it is necessary to avoid burning through the furnace bottom or eroding the furnace bottom refractories during high-temperature arc heating or cluster oxygen lance blowing oxygen. Generally, the area where the electrode is inserted is the area prone to arc burn-through, also known as the hot area, which is the key monitoring area during th...

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Problems solved by technology

[0003] (1) If it is necessary to monitor the temperature of the outer wall of the furnace bottom, dozens of thermocouples must be embedded in advance. The construction is complicated and difficult, and the temperature of the outer wall of the furnace bottom cannot be monitored in all directions;

[0004] (2) The furnace bottom temperature is high for a long time, especially in the hot zone, and the thermocouple is often prone to failure;

[0005] (3) The maintenance after the failure is difficult and the maintenance time is long, which affects the production efficiency

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