Laser Measurement of Electrode Paste Levels in Electric Arc Furnaces
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Solution Overview
Problem
Existing methods for measuring the level and state of electrode paste in electric arc furnaces are often inaccurate and difficult to perform, especially in harsh environments, due to manual measurement techniques and limitations in process control.
Innovation Solution
The implementation of multiple laser devices on the electrode column to transmit beams and determine the levels of raw and molten paste, with a reference rod for improved accuracy, and integration with an automation system for real-time data processing and presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement techniques are used to determine paste levels, then the measurement process is simple to implement, but the measurement precision and reliability are insufficient
Solution Approach 1:
The patent replaces manual mechanical measurement techniques with optical laser measurement systems. Laser devices transmit beams through the electrode column to detect paste levels automatically, eliminating the need for physical contact and manual reading, thereby significantly improving measurement precision while maintaining manageable system complexity through automated processing.
Solution Approach 2:
The patent introduces laser beams as an intermediary medium to measure paste levels without direct contact. The laser beam passes through the electrode column and interacts with the paste at different levels (raw and molten), allowing precise measurement without mechanical interference or contamination.
2Reliability
If continuous monitoring of paste levels is implemented, then the operational control is improved, but the device complexity and cost increase
Solution Approach 1:
The patent implements continuous monitoring by positioning multiple laser devices to continuously transmit beams through the electrode column. This allows real-time detection of both raw paste level and molten paste level, ensuring continuous operational control without interruption, thereby improving reliability while the modular laser system keeps complexity manageable.
Solution Approach 2:
The laser measurement system serves multiple functions: it measures both raw paste levels and molten paste levels simultaneously, provides continuous monitoring, and enables automated control. This multi-functionality improves operational reliability without requiring separate systems for each measurement task, thereby optimizing the complexity-benefit ratio.
3Measurement precision
If multiple laser devices are used to measure different paste levels, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent segments the measurement function by using different laser devices for different measurement purposes: one laser device measures the raw paste level, while another measures the molten paste level. This segmentation allows precise measurement of each paste state independently, improving overall measurement precision while organizing system complexity into manageable functional modules.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides continuous, accurate measurement of electrode paste levels and states, enhancing operational control and reducing errors in paste management within the electric arc furnace.
Implementation Method 1
providing a plurality of laser devices on the top of the electrode column, said laser devices each transmitting laser beams downwards
Data Source
AI summary
A method and an arrangement measures electrode paste in an electrode column of an electric arc furnace. The electrode column has a steel casing, is provided with a contact shoe ring, and is filled with electrode paste introduced from above and evolving from raw paste in the upper part of the steel casing to melted paste and to baked paste in the lower part of the electrode column. The level of the raw paste is determined with a laser beam transmitted by a first laser device. The level of the molten paste is determined with a laser beam transmitted by a second laser device. The data received from the laser devices is used for calculation of the distances of the levels of the raw paste and molten paste from the contact shoe ring.