Mechanical Decladder for Spent Nuclear Fuel Rod-Cuts
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Solution Overview
Problem
Existing mechanical decladders for spent nuclear fuel rods face challenges in preventing debris scattering, accumulating debris in cutting modules, and protecting blade durability during continuous slitting operations.
Innovation Solution
A mechanical decladder with an opening and closing unit, a hydraulic cylinder module, and a cutting module that alternates cutting blades to manage debris and maintain blade durability, featuring a rotatable housing module for blade replacement and a control unit for coordinated operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous slitting of spent nuclear fuel rod-cuts is performed, then productivity is improved, but debris accumulates in the cutting module and scatters
Solution Approach 1:
The cutting module is extracted as a separate, removable unit from the main processing line. This allows the cutting module to be easily removed for cleaning and maintenance, enabling continuous operation without debris accumulation interfering with overall productivity. The modular design isolates the debris-generating cutting function from the rest of the system.
Solution Approach 2:
A debris collection and removal system acts as an intermediary between the cutting blade and the collected debris. This intermediary mechanism continuously removes debris from the cutting zone, preventing accumulation while allowing the cutting operation to proceed continuously, thus resolving the contradiction between continuous processing and debris management.
2Productivity
If continuous cutting operations are performed, then productivity is improved, but blade durability deteriorates due to debris accumulation
Solution Approach 1:
The cutting module with the blade is designed as a removable unit that can be easily extracted from the processing line. This allows the blade to be removed, cleaned, or replaced without shutting down the entire system, maintaining continuous productivity while preserving blade durability through regular maintenance access.
Solution Approach 2:
The system performs preliminary cleaning actions on the blade by designing the cutting module to be easily removable for maintenance. This preliminary maintenance approach prevents debris accumulation from reaching critical levels that would compromise blade durability, allowing continuous operation to proceed without interruption.
3Object-affected harmful factors
If debris is prevented from scattering, then safety and cleanliness are improved, but the cutting module becomes complex
Solution Approach 1:
The cutting module is extracted as a self-contained, removable unit that includes integrated debris collection features. This modular approach contains all debris management functions within the cutting module itself, preventing debris scattering without requiring complex integrated systems across the entire processing line.
Solution Approach 2:
A simple debris collection mechanism acts as an intermediary within the cutting module to capture and contain debris at the source. This localized intermediary solution prevents debris scattering effectively while adding minimal complexity, as the debris management function is confined to the already-necessary cutting module rather than the entire system.
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 mechanical decladder effectively prevents debris scattering, avoids accumulation in the cutting module, and enhances blade durability by alternating cutting blades and using a rotatable housing module, enabling continuous and efficient processing of spent nuclear fuel rods.
Implementation Method 1
a hydraulic cylinder module configured to move the nuclear fuel rod-cut seated on the supporter
Data Source
AI summary
A mechanical decladder for a spent nuclear fuel rod-cut includes an opening and closing unit configured to open and close an outlet of a basket into which the nuclear fuel rod-cut is loaded, a supporter on which the nuclear fuel rod-cut discharged from the outlet of the basket is seated, a hydraulic cylinder module configured to move the nuclear fuel rod-cut seated on the supporter; and a cutting module for slitting the nuclear fuel rod-cut while the nuclear fuel rod-cut is being moved by the hydraulic cylinder module. The opening and closing unit opens and closes the outlet of the basket in conjunction with a movement of the hydraulic cylinder module.