Thimble for cyclone separator
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Solution Overview
Problem
Cyclone separators operating in high-temperature, corrosive environments face premature thimble degradation due to large exposed metal areas, leading to costly and time-consuming custom replacement processes, with existing designs being expensive to manufacture and requiring site-specific verification.
Innovation Solution
A thimble assembly constructed from common, less expensive segments with a modular design using refractory-covered steel plate cores and mounting brackets, allowing for a wide range of cyclone sizes and eliminating the need for on-site verification, enabling economies of scale and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If custom-built premium thimbles are manufactured for each specific installation, then the thimble fits the separator unit perfectly, but the manufacturing cost and delivery time increase significantly
Solution Approach 1:
The thimble is divided into multiple segments that can be manufactured separately using standardized processes and then assembled together. This allows for mass production of individual segments while maintaining the ability to create custom-sized thimbles by combining different numbers of segments, thereby reducing manufacturing costs while preserving fit precision.
Solution Approach 2:
The patent creates universal thimble segments that can be used across multiple separator unit sizes. By designing segments with standardized dimensions and connection mechanisms, the same basic segments can be configured to fit different cyclone separator sizes, eliminating the need for completely custom manufacturing for each installation.
2Manufacturing precision
If custom-built premium thimbles are manufactured for each specific installation, then the thimble fits the separator unit perfectly, but the delivery time increases due to on-site verification and custom manufacturing
Solution Approach 1:
Thimble segments are pre-manufactured and stocked in inventory before any specific installation is needed. The standardized segments can be quickly assembled into the required thimble configuration without requiring on-site verification visits or custom manufacturing, dramatically reducing delivery time while maintaining fit precision through standardized connection designs.
Solution Approach 2:
Instead of creating entirely new custom thimbles for each installation, the patent uses replicated standardized segments that can be copied and assembled in different quantities to match various separator sizes. This copying approach allows rapid fulfillment of orders from existing inventory while maintaining consistent quality and fit across different applications.
3Device complexity
If the thimble uses relatively large exposed metal areas, then the thimble structure is simpler, but the thimble degrades prematurely in high-temperature corrosive environments
Solution Approach 1:
The thimble segments combine metal structural components with refractory material linings. The metal provides the structural framework while the refractory material protects the metal surfaces from high-temperature corrosion. This composite construction allows the thimble to maintain structural simplicity while dramatically improving resistance to degradation in harsh environments.
Solution Approach 2:
Instead of uniformly protecting the entire thimble surface, the refractory material is applied specifically to areas most susceptible to corrosion and heat damage. This localized protection approach maintains structural simplicity while providing targeted protection where it is most needed, extending thimble lifespan without adding excessive complexity.
Data Source
AI summary
A thimble assembly for a cyclone separator comprising a plurality of mounting brackets separately mountable on a shelf of the separator along the perimeter of an exhaust opening, a plurality of segments vertically successively suspended from the brackets, the segments of an upper row being joined to the brackets, the segments of each successive lower row being joined to the segments of a row immediately above, each bracket exclusively serving a chord of an arc concentric with the preferably circular opening that is substantially the same in length as the chord of an arc that a segment spans, a center-to-center chordal spacing of adjacent brackets being the same as a center-to-center distance of an adjacent pair of segments.