Nuclear fuel assembly lower tube base based on streamline filter rod structure

The invention discloses a nuclear fuel assembly lower tube base based on a streamline filter rod structure, and relates to the technical field of nuclear reactor fuel assemblies, the nuclear fuel assembly lower tube base comprises an outer frame body, a filter rod group is transversely arranged on the inner side of the outer frame body, and a plurality of rib plates are longitudinally arranged on the inner side of the outer frame body; the filter rod group comprises a plurality of filter rods, a gap is reserved between every two adjacent filter rods, and the plurality of filter rods and the plurality of rib plates are arranged in a criss-cross manner. By adopting the scheme, the filter rod group connected with the outer frame body of the lower tube seat not only plays a role in filtering impurities, but also enhances the rigidity of the lower tube seat, so that the lower tube seat has higher anti-seismic property. 本发明公开了一种基于流线型过滤棒结构的核燃料组件下管座，涉及核反应堆燃料组件技术领域，包括外框体，所述外框体内侧横向设有过滤棒组，纵向设有若干筋板；所述过滤棒组包括若干根过滤棒，相邻过滤棒之间