Research and Development of A New Speediness Disassembly Tie-In for Advanced Fuel Assembly

This paper briefly introduces the pressurized water reactor fuel assembly structure,and analyzes the detachable joint problems and technical features.On this basis,a design scheme of connection structure of PWR fuel detachable is proposed,and based on the experiment results,the structure is optimized.Experiment on the optimized structure shows that after repeated disassembly,each test piece can satisfy the design requirement on flexible rotation,reliable locking,convenient disassembly and assembly,and exchangeability.