Support Tube Splash Guard for Steel Sampling
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Solution Overview
Problem
Existing samplers for molten iron and steel fail to provide high-quality slag samples due to contamination from the support pipe materials, which compromise the accuracy of metal and slag analysis.
Innovation Solution
A metal spray protection layer is applied to the lateral peripheral surface of the support tube surrounding the inlet opening, preventing pipe material and combustion products from entering the sample chamber, while a separate antechamber ensures effective separation of slag from molten metal, allowing for precise sampling and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a support tube is used for sampling, then the device structure is simplified, but contamination from support tube material enters the sample chamber compromising sample quality
Solution Approach 1:
The support tube is segmented into two functional parts: a combustion-protected section that prevents contamination and a sampling section that collects samples. This segmentation allows the support tube to maintain structural simplicity while preventing material contamination in the sample chamber through the protective coating on the combustion section.
Solution Approach 2:
A protective coating is introduced as an intermediary layer between the support tube and the sample chamber. This intermediary prevents direct contact between support tube material and the sample, eliminating contamination while maintaining the simplicity of the overall device structure.
2Adaptability or versatility
If the inlet opening is positioned in the slag layer, then slag sampling is enabled, but precise control of immersion depth is required
Solution Approach 1:
The device is pre-configured with the inlet opening positioned at a specific height relative to the measuring head, enabling automatic correct positioning during immersion. This preliminary arrangement eliminates the need for complex real-time depth control mechanisms while ensuring accurate sampling from the slag layer.
3Manufacturing precision
If a protective coating is applied to the support tube, then sample quality is improved, but the device complexity increases
Solution Approach 1:
The protective coating is applied as a thin layer with specific material properties (combustion resistance, chemical inertness) that prevent contamination. By changing the surface parameters of the support tube through coating rather than changing the overall structure, sample quality is improved while device complexity remains minimal.
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
The solution ensures high-quality slag samples by preventing contamination and enabling precise control of immersion depth, ensuring accurate analysis of slag and metal samples with improved sample chamber design and separation efficiency.
Implementation Method 1
a splash guard layer protects the material of the carrier tube in the immediate vicinity of the inlet opening, thus preventing parts of the carrier tube or its combustion products from entering the pre-chamber and subsequently the sample chamber
Implementation Method 2
Because the slag is lighter than the molten steel, it rises, while heavier metal particles that may have entered the pre-chamber remain there
Data Source
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AI summary
The apparatus has a measuring head (2) that is arranged at an immersion end of a support tube (1). The measuring head is provided with the sensor and inlet opening corresponding to a sample chamber. An inlet opening (4) is formed in a lateral peripheral surface of the support tube, and is opened with a prechamber facing away from the measuring head. An inlet portion is formed in the prechamber and is opened with a slag sample chamber.