Novel upper pipe seat of low-pressure depressurization water reactor fuel assembly

• Main Authors: ZHAO JINGJING, ZHENG YIXIONG, JIA CHAOHUA, XU SHIYIN, SUN JINGYA, GAN FUJUN, PAN WEN'AN
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2023
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention provides a novel low-pressure depressurization water reactor fuel assembly upper tube seat, and belongs to the technical field of nuclear fuel diversion, the novel low-pressure depressurization water reactor fuel assembly upper tube seat comprises an upper tube seat grating and an upper tube seat base body, the upper tube seat grating is located below the upper tube seat base body, the upper tube seat grating is of a frame structure, and a guide tube hole and an instrument tube hole are formed in the upper tube seat grating; connecting ribs are arranged between the guide pipe holes and between the guide pipe holes and the instrument pipe holes. Frame ribs are arranged between the guide pipe holes and the upper pipe base grating frame and between the instrument pipe holes and the upper pipe base grating frame. The fluid flow area can be increased, and the effect of reducing pressure drop is achieved. 本公开提供了一种新型低压降压水堆燃料组件上管座，属于核燃料导流技术领域，包括上管座格板和上管座基体，所述上管座格板位于上管座基体下方，所述上管座格板为框架结构，其内部设置有导向管孔和仪表管孔；所