Roll Cooling Shell With Self-Adjusting Radial Gap
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Solution Overview
Problem
Existing roll cooling systems require manual adjustment of the cooling gap, leading to inefficient cooling, uneven wear, and quality issues in rolled products due to fixed positioning of cooling shells and manual screw-down mechanisms, which are time-consuming, costly, and pose safety risks.
Innovation Solution
A cooling system where the cooling shell is mounted in a bearing with radial freedom, allowing automatic adjustment of the cooling gap based on cooling medium flow and pressure, eliminating the need for screw-down devices and ensuring uniform cooling and product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed positioning of the cooling shell relative to the roll is used, then the structure is simple and stable, but the cooling gap cannot be adjusted when the roll is regrounded, requiring manual intervention outside the rolling stand
Solution Approach 1:
The cooling shell is transformed from a fixed structure to a dynamic one by mounting it on a bearing that allows radial movement. This enables the cooling gap to automatically adjust when the roll diameter changes due to regrounding, eliminating the need for manual intervention while maintaining structural simplicity
Solution Approach 2:
The cooling device performs self-adjustment through the bearing mechanism that automatically accommodates radial movements of the roll. The system adapts to roll diameter changes without requiring external manual adjustment, achieving self-service functionality
2Ease of operation
If manual adjustment of the cooling gap is performed using set screws, then the cooling shell can be repositioned, but the adjustment must be done outside the rolling stand, consuming time and creating safety risks
Solution Approach 1:
The bearing-mounted cooling shell automatically adjusts to the correct position through radial movement when the roll diameter changes. This self-adjusting mechanism eliminates the need for manual intervention, allowing continuous operation within the rolling stand without time loss or safety risks
Solution Approach 2:
The manual screw-down adjustment mechanism is replaced with a bearing-based radial movement system. This substitution eliminates complex mechanical adjustment operations and enables automatic adaptation to roll diameter changes
3Strength
If the cooling shell is connected to the roll chocks, then the cooling shell is securely mounted, but the weight distribution becomes uneven and rigidity increases, negatively impacting roll bending and friction behavior
Solution Approach 1:
The cooling shell is extracted from the chock mounting system and independently mounted on a bearing structure. This separation removes the cooling shell from the chock assembly, preventing negative impacts on weight distribution and roll bending while maintaining secure mounting through the bearing
4Reliability
If the cooling gap size is not properly adjusted, then the cooling shell remains fixed, but the cooling medium cannot drain freely, causing turbulent cross flows and non-uniform cooling
Solution Approach 1:
The bearing-mounted cooling shell dynamically adjusts the cooling gap size through radial movement, ensuring optimal clearance for cooling medium flow. This dynamic adjustment prevents turbulent cross flows and ensures uniform cooling without requiring complex control mechanisms
Solution Approach 2:
The cooling gap parameter is automatically adjusted through the bearing mechanism that accommodates radial movements. This parameter change ensures proper drainage of cooling medium and prevents turbulent flow, maintaining reliable uniform cooling
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 system achieves optimal, uniform cooling and reduced wear on rolls by automatically adjusting the cooling gap, enhancing the quality of rolled products and reducing operational hazards and costs.
Implementation Method 1
the bearing has a degree of freedom in the radial direction with respect to the circular arc-shaped cross section of the cooling shell, so that the cooling shell is mounted in the bearing in such a way as to be freely movable in the radial direction
Implementation Method 2
Devices for the cooling of a roll by using a cooling shell are basically known in the prior art... disclose a cooling device with a cooling shell to realize a forced convection for the cooling of the roll
Implementation Method 3
the cooling of the roll occurs by using a cooling shell mounted on the roll... the passage of a cooling agent
Data Source
AI summary
The invention relates to a device and a method for cooling a roll. The roll concerned can be a roller in a roll stand or a measuring roll. The device comprises a cooling shell having a cross section in the shape of a section of a circular arc, for covering a surface region of the roll (200), wherein, in the region of an edge of the cooling shell, a bearing is formed with a pivot joint (120) with an axis of rotation running perpendicular to the circular arc-shaped cross-section, for pivoting the cooling shell about the axis of rotation. According to the invention, in order to ensure that the size of the cooling gap during the rolling operation or during the operation of a measuring roll is always autonomously optimally set, the bearing has a degree of freedom in radial direction r with respect to the circular arc-shaped cross-section of the cooling shell, such that the cooling shell is mounted in the bearing in such a way as to be freely movable in the radial direction.