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1. (WO2013159438) REACTOR INTERNALS IN LOWER REACTOR

Pub. No.:    WO/2013/159438    International Application No.:    PCT/CN2012/077178
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Wed Jun 20 01:59:59 CEST 2012
IPC: G21C 3/322
G21C 7/32
G21C 15/18
G21C 9/00
Applicants: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE
上海核工程研究设计院
LIN, Shaoxuan
林绍萱
LIANG, Yejia
梁叶佳
ZHANG, Ming
张明
LIU, Bin
刘彬
DING, Zonghua
丁宗华
WENG, Yu
翁羽
YU, Fan
余凡
CHEN, Yuqing
陈宇清
Inventors: LIN, Shaoxuan
林绍萱
LIANG, Yejia
梁叶佳
ZHANG, Ming
张明
LIU, Bin
刘彬
DING, Zonghua
丁宗华
WENG, Yu
翁羽
YU, Fan
余凡
CHEN, Yuqing
陈宇清
Title: REACTOR INTERNALS IN LOWER REACTOR
Abstract:
Reactor internals in a lower reactor comprise a reactor pressure vessel(1), a reactor core provided in the reactor pressure vessel(1), a supporting lower plate(2) of the reactor core fixed to the bottom of the reactor core and a flow distribution device(3) provided with several circular openings. The flow distribution device(3) comprises an upper distribution plate, a middle distribution ring fixedly connected to the bottom of the upper distribution plate along the periphery direction, a lower distribution plate fixedly connected to the bottom of the middle distribution ring along the periphery direction. Several evaginable protruding sections are provided on the top of the upper distribution ring. The evaginable protruding sections of the upper distribution ring are fixedly connected to the supporting lower plate (2) of the reactor core. The reactor internals in a lower reactor have a simple structure, an even flow distribution and a small resistance coefficient, and are easy to replace and repair.