Plastically Deforming Channel for Ceramic Purging Brick Sealing
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Solution Overview
Problem
Existing securing devices for cylindrical ceramic hollow bodies in gas purging bricks, used in metallurgical vessels, fail to provide a secure and gastight fixation at high temperatures due to the degradation of ductile carbon gaskets when exposed to oxygenated gases.
Innovation Solution
A securing device featuring a base body with a ring-shaped channel that deforms plastically to securely fix and seal the ceramic purging tubes, using materials that remain intact at high temperatures, such as copper-based alloys, which also provide corrosion protection and even force distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ductile carbon gaskets are used to achieve fixation free of play, then the fixation precision is improved, but the reliability deteriorates at high temperatures due to combustion
Solution Approach 1:
The invention extracts the sealing and fixation function from the carbon gasket and transfers it to the metallic channel wall through plastic deformation. The metallic material permanently deforms to create a tight fit around the purging tube, eliminating the need for carbon gaskets that combust at high temperatures while maintaining fixation precision.
Solution Approach 2:
The invention changes the material parameter from carbon-based ductile material to metallic material that maintains its mechanical properties at high temperatures. The metallic channel wall undergoes plastic deformation under pressure to achieve the required fixation precision, and this deformed state is maintained stably at high temperatures without combustion.
2Reliability
If the inner wall of the channel is made plastically ductile to enable deformation and sealing, then the sealing capability is improved, but the structural strength may deteriorate
Solution Approach 1:
The invention applies local quality by making only the inner wall of the channel plastically ductile while keeping the outer wall and overall structure rigid and strong. This localized ductility enables sealing and fixation through deformation, while the rest of the channel maintains its structural strength to withstand high temperatures and pressures.
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 a secure, gastight, and corrosion-resistant fixation of ceramic purging tubes, maintaining integrity at high temperatures and preventing combustion, even when exposed to oxygenated gases.
Implementation Method 1
at least the inner wall of the channel which is adjacent to the opening consists of a material which is plastically ductile under application of pressure... so that the inner wall of the channel deforms plastically and reduces the cross section of the opening
Implementation Method 2
the plastically ductile material of the channel wall is chosen from a group which does not burn even under the supply of oxygen
Data Source
AI summary
To improve the position of a cylindrical ceramic hollow body the invention relates to a securing device for use with a gas purging brick, where the securing device has the following characteristics in its operational position: A base body which, with its bottom and a circumferential wall, defines a cylindrical space with a corresponding central longitudinal axis, the bottom features an opening whose longitudinal axis aligns with the central longitudinal axis the bottom features a ring-shaped channel which extends concentrically around the opening. at least an inner wall of the channel which is adjacent to the opening consists of a material which is plastically ductile under the application of pressure, a ring-shaped compact whose radial wall cross-section increases in size upwards from a lower free end, so that the inner wall of the channel deforms plastically, thereby reducing the cross section of the opening, after the compact is pressed into the channel.