Electrode Removal Device for Furnace Maintenance
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Solution Overview
Problem
Current methods for removing and replacing electrodes in furnaces, such as steelmaking furnaces, are inefficient due to the weight and size of the electrodes, requiring cumbersome devices and systems that are difficult to position and clean, posing safety risks and operational inefficiencies.
Innovation Solution
A portable electrode adjustment device and vehicle positioning system that allows for precise positioning, lifting, and rotation of the electrode adjustment device under the furnace, enabling safe and efficient removal and replacement of electrodes, with dual functionality for transporting steel coils and allowing for on-site cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional devices and systems are used to push electrodes from below, then the electrodes can be removed and replaced, but the devices are cumbersome and difficult to position
Solution Approach 1:
The electrode removal system is divided into separate functional components: a push-up device for applying force to the electrode, a positioning system for locating the push-up device under the furnace, and a lifting mechanism (overhead crane) for removing the electrode. This segmentation allows each component to be optimized independently, making the overall system easier to position and operate.
Solution Approach 2:
The push-up device acts as an intermediary tool between the operator and the electrode. Instead of directly manipulating the heavy electrode, the operator uses the push-up device to apply controlled force, breaking the connection between the electrode and furnace lining. This intermediary approach simplifies the operation and improves positioning ease.
2Productivity
If overhead cranes are used to lift electrodes, then the electrodes can be removed from the furnace, but the process requires complex positioning and support systems
Solution Approach 1:
The push-up device is positioned under the furnace beforehand to break the connection between the electrode and furnace lining. This preliminary action prepares the electrode for removal, allowing the overhead crane to lift it more efficiently without requiring complex real-time positioning and support systems during the lifting operation.
Solution Approach 2:
The lifting operation is separated from the positioning operation. The overhead crane handles only the lifting function once the push-up device has prepared the electrode, while the positioning is handled by the independent push-up device positioning system. This segmentation improves productivity by reducing the complexity of the combined system.
3Ease of operation
If the electrode adjustment device is used to push electrodes up, then the connection between electrode and furnace is broken, but the device becomes covered with debris requiring cleaning
Solution Approach 1:
The push-up device is designed as a separate, removable unit that can be easily extracted from the furnace area. This segmentation allows the device to be quickly removed for cleaning after becoming covered with debris, maintaining ease of operation while solving the cleaning accessibility problem.
4Force
If the electrode adjustment device weighs 15 to 30 tons, then it can push the electrodes, but it requires a vehicle positioning system for transport and positioning
Solution Approach 1:
The vehicle positioning system is designed to handle multiple functions: transporting the heavy push-up device, positioning it under the furnace, and potentially other electrode maintenance operations. This multi-functionality justifies the system complexity by consolidating multiple operations into a single versatile platform.
Solution Approach 2:
The patent introduces a vehicle positioning system that likely uses mechanical or automated positioning mechanisms instead of manual positioning methods. This substitution reduces the operational complexity of positioning the heavy device while maintaining the necessary force capability.
Data Source
AI summary
An electrode adjustment device and a vehicle positioning system for positioning the electrode adjustment device adjacent a furnace. The electrode adjustment device is utilized for adjusting the electrode during maintenance of the furnace (e.g., removal of the electrode for replacement or repair, repair of the refractory material, or other like furnace or electrode repair). When the electrode adjustment device is moved to a location adjacent the furnace, it is used to apply force under the bottom electrode to break the connection between the bottom electrode and the furnace. After the connection is broken the bottom electrode is pushed up into the furnace vessel by the electrode adjustment device until the electrode can be removed. After removing the bottom electrode, the electrode adjustment device is covered with debris and can be cleaned adjacent the furnace.