Refractory Lining Damage Detection via Electrical Circuit
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Solution Overview
Problem
Current methods for detecting damage in refractory linings are limited to offline checks and do not provide real-time monitoring, posing safety and operational efficiency risks during high-temperature applications with molten metals.
Innovation Solution
A damage detection system comprising an electrically conductive grid under the refractory lining and electrodes in contact with molten metal, forming an open electrical circuit powered by a reliable power source, which closes and triggers an alarm upon damage, enabling permanent online monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical or thermal methods are used to detect damage in refractory linings, then damage detection capability is provided, but real-time monitoring during operation is not achieved
Solution Approach 1:
The patent replaces optical/thermal detection methods with an electrical detection system. An electrically conductive grid is embedded in the refractory lining, and electrodes contact the molten metal to form an electrical circuit. When damage occurs and molten metal penetrates the lining, it closes the circuit, triggering an alarm. This substitution enables continuous real-time monitoring during operation without requiring downtime for optical or thermal inspections.
2Measurement precision
If regular offline checks are performed on refractory linings, then damage detection is possible, but continuous monitoring during operation is lost
Solution Approach 1:
The patent implements continuous monitoring of refractory lining integrity throughout the operational lifecycle of the molten metal vessel. The electrical circuit remains active during operation, with the grid embedded in the lining and electrodes in contact with the molten metal. Any penetration of molten metal through the lining immediately closes the circuit and triggers an alarm, enabling continuous damage detection without interrupting production or requiring scheduled shutdowns for inspection.
3Duration of action of stationary object
If refractory linings are made more resistant to chemical and mechanical stress, then lining lifetime is extended, but real-time damage monitoring capability is not provided
Solution Approach 1:
The patent incorporates an electrically conductive grid into the refractory lining during the manufacturing or installation phase. This grid is electrically connected to electrodes that will contact the molten metal during operation, forming a pre-configured detection circuit. The grid is positioned to detect penetration events at critical depths within the lining, enabling real-time monitoring of lining integrity throughout its extended service life without requiring additional modifications or installations later.
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
Enables continuous, real-time monitoring of refractory lining integrity during operation, reducing downtime and allowing for immediate counter-measures, adaptable to various refractory lining types and installation configurations.
Implementation Method 1
an electrically conductive grid disposed underneath the surface of the refractory lining closest to a metal melt when in use, one or more electrically conductive electrodes disposed in contact with the metal melt when in use... the said electrically conductive metallic grid and the said one or more electrically conductive electrodes are electrically connected to each other, such as to form an open electrical circuit
Data Source
AI summary
The present invention relates to damage detection systems for refractory linings for molten metal vessels, comprising an electrically conductive grid disposed underneath the surface of the refractory lining closest to a molten metal when in use, one or more electrically conductive electrodes disposed in contact with the molten metal when in use and an electrical power source, wherein the electrically conductive metallic grid and the one or more electrically conductive electrodes are electrically connected to each other, such as to form an open electrical circuit powered by the said electrical power source, and a detected closure of the said electrical circuit during normal use of the molten metal vessel indicates that the said refractory lining is damaged, or the presence of a molten metal during normal operation of the vessel closes the said electrical circuit in case the refractory lining is damaged. The present invention relates to a method for detecting damage in a refractory lining during use, and the use of a damage detection system according to the invention.