Multifunctional overhead crane insulation monitoring system for electrolytic workshops

Abstract

The invention discloses a multifunctional overhead crane insulation monitoring system for electrolytic workshops, which comprises a PLC (programmable logic controller), a human-machine interface, an insulation monitoring controller and a precision regulated power supply; the important insulated parts, which need to be monitored, of an electrolytic overhead crane are respectively connected to the insulation monitoring controller, and insulated wires are then led out to connect to the PLC. The insulation monitoring controller uses shielded measurement input signals to acquire the induced voltage produced between each equipment and each structure of the multifunctional overhead crane in real time, signals are then inputted into the PLC by a high-precision, high-reliability isolated sensor, the PLC carries out arithmetic and logic operation according to a preset program, consequently, a real-time monitoring and alarm function can be implemented on the insulation levels of each equipment and each mechanism of the electrolytic multifunctional overhead crane, and protective action can be implemented on the whole overhead crane in time. Monitoring is accurate, the labor intensity of maintainers is decreased, time is shortened for maintainers, and the multifunctional overhead crane insulation monitoring system for electrolytic workshops ensures that operators cannot be injured and equipment cannot be damaged when insulation is destroyed.

Description

technical field [0001] The invention relates to the technical field of insulation monitoring, in particular to a multifunctional crane insulation monitoring device for an electrolysis workshop. Background technique [0002] As an important equipment in the production process of electrolytic aluminum, the multifunctional electrolytic crane is responsible for producing aluminum from electrolytic aluminum, replacing anodes, shelling, slag cleaning, busbar lifting, feeding and heat preservation, etc. Its operation reliability directly affects the entire Normal production of electrolytic series. During the production process of aluminum electrolysis, shell breaking, anode replacement, aluminum tapping, slag removal, and anode bus lifting are all in direct contact with the electrolyte of the electrolytic cell, while the various mechanisms and operating environment of the multi-functional crane are made of steel structures. The insulation status of the multi-functional crane can o...

AI Technical Summary

Problems solved by technology

During the production process of aluminum electrolysis, shell breaking, anode replacement, aluminum tapping, slag removal, and anode bus lifting are all in direct contact with the electrolyte of the electrolytic cell, while the various mechanisms and operating environment of the multi-functional crane are made of steel structures. The insulation status of the multi-functional crane can only be measured manually with a megohmmeter on each connecting structure, and the dust is cleaned on the crane during daily spot inspection and maintenance. The insulation status of each mechanism cannot be detected in real time. If the multi-functional crane The insulation condition of the metal structure of the main girder of the crane is not good, which will cause large DC current grounding and cause large equipment damage or personal casualties. Therefore, it is very important to ensure the insulation between the multi-functional crane mechanisms

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