Fuel assembly for nuclear reactor
阅读：223发布：2022-11-17
专利汇可以提供Fuel assembly for nuclear reactor专利检索，专利查询，专利分析的服务。并且A fuel assembly for nuclear reactor is comprised of a plurality of fuel rods for nuclear reactor, two upper and lower tie plates for holding the fuel rods at their upper and lower ends, two mounting frames, each being fixed to the respective tie plate, and segment spacers between the mounting frames. By the engagement of the segment spacers with the mounting frames, complicated processing of the conventional connector fuel rods is eliminated, and a danger is damages to thermal strain can be reduced because of less welding parts, which have been deemed as a major cause for fuel damage.，下面是Fuel assembly for nuclear reactor专利的具体信息内容。
1. A fuel assembly for a nuclear reactor, said assembly comprising a plurality of fuel rods, an upper tie plate and a lower tie plate provided, respectively, at upper and lower ends of the fuel rods for holding the fuel rods, an upper mounting frame and a lower mounting frame provided adjacent to the respective tie plates to surround the fuel rods, a plurality of segment spacers arranged between said upper and lower mounting frames to surround the fuel rods and hold the fuel rods at an appropriate separation, and connecting parts on facing end portions of said upper and lower mounting frames and each of said plurality of segment spacers to connect the mounting frames to said segment spacers and to connect adjacent segment spacers together, and wherein said connecting parts include a combination of guide plates and pivots in engaging relationship to a combination of guide grooves and openings.
2. A fuel assembly for a nuclear reactor, said assembly comprising a plurality of fuel rods, an upper tie plate and a lower tie plate provided, respectively, at upper and lower ends of the fuel rods for holding the fuel rods, an upper mounting frame and a lower mounting frame provided adjacent to the respective tie plates to surround the fuel rods, a plurality of segment spacers arranged between said upper and lower mounting frames to surround the fuel rods and hold the fuel rods at an appropriate separation, and connecting parts on facing end portions of said upper and lower mounting frames and each of said plurality of segment spacers to connect the mounting frames to said segment spacers and to connect adjacent segment spacers together, and wherein said connecting parts include a combination of guide plates and pivots provided on connecting springs on one of said facing portions of said upper and lower mounting frames and said segment spacers, and guide grooves and openings, respectively, on a corresponding facing portion of another said mounting frame and segment spacer.
3. A fuel assembly for a nuclear reactor, said assembly comprising a plurality of fuel rods, an upper tie plate and a lower tie plate provided, respectively, at upper and lower ends of the fuel rods for holding the fuel rods, an upper mounting frame and a lower mounting frame provided adjacent to the respective tie plates to surround the fuel rods, a plurality of segment spacers arranged between said upper and lower mounting frames to surround the fuel rods and hold the fuel rods at an appropriate separation, and connecting parts on facing end portions of said upper and lower mounting frames and each of said plurality of segment spacers to connect the mounting frames to said segment spacers and to connect adjacent segment spacers together, said connecting parts being male connecting parts and female connecting parts, said male connecting parts being connectable with said female connecting parts, wherein said male connecting parts are provided at one of said mounting frames at positions facing the segment spacers, and said female connecting parts are provided at tHe segment spacers at positions facing said one mounting frame, and wherein said male connecting parts are formed of a combination of a plurality of guide plates and pivots, and wherein said female connecting parts are formed of a combination of a plurality of guide grooves and openings.
4. A fuel element according to claim 3, wherein said guide plates are axially inserted into said guide grooves and said pivots are engaged into said openings.
5. A fuel element according to claim 4, wherein said pivots are provided on plate-shaped connection springs adjacent to said guide plates.
6. A fuel element according to claim 4, wherein said guide plate and said guide grooves are tapered.
7. A fuel assembly for a nuclear reactor according to claim 3 wherein said male connecting parts are further provided at segment spacers at positions facing one of said mounting frames, and said female connecting parts are further provided at said one mounting frame at positions facing the segment spacers.
8. A fuel assembly according to claim 3 wherein a lattice of spacers is fixed to internal walls of each of said plurality of segment spacers to hold the fuel rods at the appropriate separation.
9. A fuel element according to claim 7, wherein said one mounting frame is said lower mounting frame.
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