Co-extrusion type annular fuel rod
A fuel rod and co-extrusion technology, which is applied to fuel elements, greenhouse gas reduction, nuclear power generation, etc., can solve the problems of narrow and long coolant flow areas, affecting structural stability, heat conduction obstacles, etc., to simplify the assembly and manufacturing process, Effect of increasing stability and lowering core temperature
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 , 2 A co-extruded annular fuel rod shown includes an upper end plug 1 , a lower end plug 2 , an inner cladding 3 , an outer cladding 4 , and an annular fuel core 5 .
[0035] The annular fuel core body 5, the inner cladding 3 and the outer cladding 4 are processed by co-extrusion, and there is no gap between them, which enhances heat conduction and reduces the core temperature of the fuel pellet.
[0036] The upper end plug 1 is connected above the inner shell 3 and the outer shell 4, and the lower end plug 2 is connected below.
[0037] The annular fuel core 5 is a dispersion or metal fuel.
[0038] The traditional co-extrusion processing method is easy to produce uneven distribution of cores at both ends of the co-extrusion, so the co-extruded annular fuel rod of the present application cuts off the uneven...
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