发明授权
US08477900B2 Hold-down spring unit for top nozzle of nuclear fuel assembly having improved hold-down performance and top nozzle for nuclear fuel assembly having the same
有权
用于具有改进的压缩性能的核燃料组件的顶部喷嘴的压紧弹簧单元和具有其的用于核燃料组件的顶部喷嘴
- 专利标题： Hold-down spring unit for top nozzle of nuclear fuel assembly having improved hold-down performance and top nozzle for nuclear fuel assembly having the same
- 专利标题（中）： 用于具有改进的压缩性能的核燃料组件的顶部喷嘴的压紧弹簧单元和具有其的用于核燃料组件的顶部喷嘴
-
申请号： US12748369申请日： 2010-03-26
-
公开(公告)号： US08477900B2公开(公告)日： 2013-07-02
- 发明人: Joon Kyoo Park , Jin Seok Lee , Kyeong Lak Jeon , Jung Min Suh , Gi-Jun Gwon , Nam Gyu Park , Kyong Bo Eom , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
- 申请人： Joon Kyoo Park , Jin Seok Lee , Kyeong Lak Jeon , Jung Min Suh , Gi-Jun Gwon , Nam Gyu Park , Kyong Bo Eom , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
- 申请人地址： KR Daejeon
- 专利权人： Korea Nuclear Fuel Co., Ltd.
- 当前专利权人： Korea Nuclear Fuel Co., Ltd.
- 当前专利权人地址： KR Daejeon
- 代理机构： Rabin & Berdo, P.C.
- 优先权： KR10-2010-0006471 20100125
- 主分类号： G21C3/32
- IPC分类号： G21C3/32
摘要：
A hold-down spring unit for a top nozzle of a nuclear fuel assembly. The hold-down spring unit is coupled to the upper end of the top nozzle of the nuclear fuel assembly. The hold-down spring unit includes a first spring which provides a hold-down force upon the nuclear fuel assembly under start-up conditions and hot full power conditions of a nuclear reactor, and a second spring which provides an additional hold-down force upon the nuclear fuel assembly under start-up conditions of the nuclear reactor. The hold-down margin under start-up conditions and hot full power conditions is reduced, thus enhancing the mechanical and structural stability of the nuclear fuel assembly.
公开/授权文献
信息查询
