公开(公告)号：US5186890A

公开(公告)日：1993-02-16

申请号：US663432

申请日：1991-03-01

申请人： Masahisa Ohashi ,  Shusaku Sawada ,  Motomu Sogame ,  Yoshiaki Oomasa ,  Kunikazu Kaneto

发明人： Masahisa Ohashi ,  Shusaku Sawada ,  Motomu Sogame ,  Yoshiaki Oomasa ,  Kunikazu Kaneto

IPC分类号： G21C5/00 ,  G21C3/30 ,  G21C3/32 ,  G21C3/324

CPC分类号： G21C3/32 ,  Y02E30/40

摘要： A fuel containment containing nuclear fuel rods of a fuel assembly which will be loaded into a reactor core of a fast breeder reactor is formed narrow in width at middle portion of vertical direction and long in length of vertical direction. And as being used in the reactor core, the middle portion of vertical direction of the fuel containment, wherein both of heat generation and swelling are larger than that of other portion, expands more than other portion, but undesirable contact with adjacent fuel assemblies can be avoided as the middle portion is previously formed narrow. Moreover, the other portions, wherein expansion of the fuel containment and undesirable contact with adjacent fuel assemblies are barely caused, are formed previously wide in width by enlarging the coolant flow path of the fuel containment, whereby pressure drop of coolant of coolant used in the reactor core can be reduced.

摘要翻译： 将装载到快速增殖反应堆的反应堆堆芯中的燃料组件的核燃料棒的燃料容器在垂直方向的中间部分和垂直方向长度上形成为宽度窄。 并且在反应堆堆芯中使用燃料容器垂直方向的中间部分，其中发热和膨胀均大于其它部分，其膨胀比其他部分膨胀，但是与邻近的燃料组件的不期望的接触可以是 避免了中间部分先前形成的狭窄。 此外，通过扩大燃料容纳物的冷却剂流动路径，其中几乎不会导致燃料容纳物的膨胀和与相邻的燃料组件的不期望的接触的其它部分预先宽度地形成，由此在 反应堆堆芯可以减少。