Rotating Seal Cooling Structure for High-Temperature Sliding Surfaces
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Solution Overview
Problem
Existing rotation seal-cooling methods for high-temperature rotary-type heating devices are inefficient and require complex structures, failing to effectively cool the sliding surface of the rotation seal, leading to reduced seal life and frequent replacements.
Innovation Solution
A rotation seal-cooling structure that includes a cylindrical body with a double structure portion and a nozzle injecting cooling fluid from the outer peripheral edge, guiding the fluid radially inward to cool the sliding surface of the rotation seal, using water, air, or a mixture of both, and incorporating features like fins and flow passage walls to enhance cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a sealed jacket structure is used to cool the rotation seal on the fixed side, then the rotation seal can be cooled, but the structure becomes complicated and difficult to realize
Solution Approach 1:
Instead of cooling the rotation seal from the fixed side through a sealed jacket structure, the invention inverts the approach by cooling the double structure portion of the rotating cylindrical body, which indirectly cools the sliding surface of the rotation seal through thermal conduction. This simplifies the cooling structure while achieving the same temperature control objective.
Solution Approach 2:
The invention extracts the cooling function from the complex sealed jacket structure and implements it through a simplified cooling device that cools the double structure portion directly. This separates the cooling function from the sealing function, allowing each to be optimized independently.
2Temperature
If cooling is performed by allowing cooling medium to circulate through the fixed side, then cooling is achieved, but the sliding surface of the rotation seal cannot be sufficiently cooled
Solution Approach 1:
The invention inverts the cooling approach by cooling the double structure portion of the rotating body instead of the fixed side. This allows the cooling effect to be transmitted directly to the sliding surface through thermal conduction, ensuring sufficient cooling effectiveness where it is most needed.
Solution Approach 2:
The invention applies cooling locally to the double structure portion that is in direct contact with the sliding surface. This localized cooling approach ensures that the critical sliding surface area receives adequate cooling, improving temperature control reliability in the most critical region.
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 proposed structure effectively cools the rotation seal with a simple design, extending its lifespan and reducing replacement frequency while maintaining environmental safety.
Implementation Method 1
the double structure portion provided at the outer peripheral edge portion of the cylindrical body can be cooled with the cooling fluid, and thus the sliding surface of the rotation seal that comes into contact with the double structure portion can be cooled from the inner side in the radial direction
Data Source
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AI summary
A rotation seal-cooling structure (S, S', S") includes a cylindrical body (100) including a double structure portion (D, D', D") having a space open to the outside in a direction toward one end side from the other end side on an outer peripheral edge portion of the one end side and configured to rotate around a rotation axis (L), a rotation seal (5) including a sliding surface (15) coming into contact with the double structure portion (D, D', D") from the outer side of the cylindrical body (100) in a radial direction and configured to rotatably seal a portion between the cylindrical body (100) and the sliding surface (15), and a nozzle (1) configured to inject a cooling fluid to the double structure portion (D, D', D").