Spacer grid of a nuclear fuel assembly

The present invention relates to a space lattice of a nuclear fuel assembly which can be manufactured using three-dimensional printing with high degree of freedom in design, excluding sheet metal processing and welding processing. The space lattice of the nuclear fuel assembly has hollow lattice cel...

Full description

Saved in:
Bibliographic Details
Main Authors NAM CHAE YOUNG, PARK NAM GYU, WOO HAN GIL, RYU JOO YOUNG
Format Patent
LanguageEnglish
Korean
Published 07.04.2021
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:The present invention relates to a space lattice of a nuclear fuel assembly which can be manufactured using three-dimensional printing with high degree of freedom in design, excluding sheet metal processing and welding processing. The space lattice of the nuclear fuel assembly has hollow lattice cells (110) having an inner wall (111) arranged in a lattice structure to be connected to each other in a circumscribed manner, wherein the lattice cell (110) comprises: a plurality of elastic support units (112) curved inward from an inner wall (111) to be formed to protrude and having at least three or more thereof arranged at an equal angle to elastically support a fuel rod (10); and a plurality of inner mixing vanes (113) formed to protrude by allowing an upper tip unit to be turned in a spiral along the upper inner wall of the elastic support unit (112). 본 발명은 판금 가공 및 용접 가공을 배제하고 설계 자유도가 높은 3D 프린팅을 이용하여 제작이 가능한 핵연료 집합체의 지지격자에 관한 것이다. 본 발명의 핵연료 집합체의 지지격자는, 내측 벽(111)을 갖는 중공의 격자 셀(110)들이 격자(lattice) 구조로 배치되어 서로 외접하여 연결되며, 상기 격자 셀(110)은, 내측 벽(111)에서 내측으로 만곡되어 돌출 형성되되, 적어도 3 개 이상이 등각으로 배치되어 연료봉(10)을 탄성 지지하게 되는 복수 개의 탄성 지지부(112)와; 상기 탄성 지지부(112)의 상단 내측 벽을 따라서 상측 선단부가 나선형으로 선회하여 돌출 형성된 복수 개의 인너 믹싱 베인(113)을 포함한다.
Bibliography:Application Number: KR20210041061