Inconel spacer grid of a nuclear fuel assembly

The present invention relates to an Inconel spacer grid of a nuclear fuel assembly, which is able to be manufactured by using 3D printing with a high degree of freedom of design while excluding sheet metal processing and welding processing, so that the Inconel spacer grid is suitable for an upper or...

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Bibliographic Details
Main Authors NAM CHAE YOUNG, LEE JIN SUK, WOO HAN GIL, RYU JOO YOUNG
Format Patent
LanguageEnglish
Korean
Published 08.03.2022
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:The present invention relates to an Inconel spacer grid of a nuclear fuel assembly, which is able to be manufactured by using 3D printing with a high degree of freedom of design while excluding sheet metal processing and welding processing, so that the Inconel spacer grid is suitable for an upper or lower spacer grid. According to the present invention, the Inconel spacer grid of the nuclear fuel assembly, in which grid cells (110) having a rectangular shape and having an inner grid surface (111) form a square lattice so as to be assembled with a fuel rod (10) or a guide tube (30) in each of the grid cells, includes: a spring (120) protruding in a longitudinal direction on each of four inner grid surfaces (111) constituting each of the grid cells (110) to which the fuel rod (10) is assembled, and making contact with the fuel rod (10) to support the fuel rod (10); and a sleeve (130) having a hollow cylindrical shape and integrally making contact with the four inner grid surfaces (111) constituting each of the grid cells (110) to which the guide tube (30) is assembled. 본 발명은 판금 가공 및 용접 가공을 배제하고 설계 자유도가 높은 3D 프린팅을 이용하여 제작이 가능하여 상부 또는 하부 지지격자에 적합한 핵연료 집합체의 인코넬 지지격자에 관한 것이다. 본 발명의 핵연료 집합체의 인코넬 지지격자는, 내측 격자 면(111)을 갖는 사각의 격자 셀(110)들이 정방형 격자(square lattice)를 구성하여 각 격자 셀 내에 연료봉(10) 또는 안내관(30)과 조립이 이루어지는 인코넬의 지지격자로서, 상기 연료봉(10)이 조립되는 각 격자 셀(110)을 구성하는 4개의 내측 격자 면(111) 각각에 종방향으로 돌출 형성되어 상기 연료봉(10)과 접촉하여 연료봉(10)을 지지하는 스프링(120)과; 상기 안내관(30)이 조립되는 각 격자 셀(110)을 구성하는 4개의 내측 격자 면(111)과 접하여 일체로 구성되는 중공의 원통 형상의 슬리브(130)를 포함한다.
Bibliography:Application Number: KR20200109025