Hollow water gap structure storage cavity for dense storage of spent fuel and storage grillwork of hollow water gap structure storage cavity

• Main Authors: HUANG RAN, LIU JIANWEN, HE XIAOMING, DANG HALEI, ZHU ZIQIANG, REN WENJUN, SUN HE, SHAO CHANGLEI, LI LEI
• Format: Patent
• Language: Chinese; English
• Published: 29.10.2021
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention discloses a hollow water gap structure storage cavity for spent fuel dense storage and a storage grillwork thereof, the storage cavity (3) comprises two or more layers of neutron absorption plates (4) and spacing plates (2) placed between the neutron absorption plates (4); the neutron absorption plates (4) and the spacing plates (2) are integrally placed in a cavity formed by welding the neutron absorption cladding (1) and the storage cavity (3), and the spacing plates (2) separate the neutron absorption plates (4) into water gaps. The fuel storage grillwork adopting the water gap composite neutron absorption plate arrangement scheme can realize denser fuel storage, and has higher critical safety, better pool arrangement adaptability and relatively low neutron absorption material consumption and manufacturing cost. 本发明公开了用于乏燃料密集贮存的中空水隙结构贮存腔及其贮存格架，所述贮存腔(3)包括两层或多层中子吸收板(4)及放置在所述中子吸收板(4)之间的间隔板(2)，所述中子吸收板(4)及所述间隔板(2)整体放置在中子吸收包壳(1)及所述贮存腔(3)焊接组成的空腔内，所述间隔板(2)将所述各层中子吸收板(4)间隔出水隙。采用的水隙复合型中子吸收板布置方案的燃料贮存格架能够