公开(公告)号：US5034185A

公开(公告)日：1991-07-23

申请号：US397758

申请日：1989-02-08

申请人： Makoto Ueda ,  Ritsuo Yoshioka ,  Tomonobu Sakuranaga ,  Yuichi Motora ,  Shigenori Shiga ,  Munenari Yamamoto

发明人： Makoto Ueda ,  Ritsuo Yoshioka ,  Tomonobu Sakuranaga ,  Yuichi Motora ,  Shigenori Shiga ,  Munenari Yamamoto

IPC分类号： G21C7/10 ,  G21C7/113 ,  G21C7/24 ,  G21C7/00

CPC分类号： G21C7/113 ,  G21C7/24 ,  G21Y2002/206 ,  G21Y2002/30 ,  G21Y2004/10 ,  G21Y2004/30 ,  Y02E30/39

摘要： A control blade for a nuclear reactor having inserted upper end structural members and inserted lower end structural members connected to a plurality of wings each in the form of a generally rectangular plate having an longitudinal axis extending in the longitudinal direction of the control blade, the wing being disposed to form a cross-shaped section of the control blade. The wings and the structural members are connected to and supported on a central connection member. Each wing or a sheath member formed within each wing is formed from a diluted alloy obtained by diluting a long-lived neutron absorber such as hafnium with a diluent such as zirconium or titanium. A plurality of neutron absorber housing holes are formed in the diluted alloy section. Specifically, if the housing holes are formed to extend in the widthwise direction of the wing, the sectional area of each housing hole formed in a portion of the control blade corresponding to the region where the subcriticality in the reactor core becomes smaller after the reactor has been shut down by fully inserting the control blade into the core is larger than that of housing holes formed in the other regions. A structure having a means to cope with swelling of the neutron absorber can be applied to the former region.

摘要翻译： 一种用于核反应堆的控制叶片，其具有插入的上端结构构件和连接到多个翅片的插入的下端结构构件，每个翼片具有沿着控制叶片的纵向方向延伸的纵向轴线的大致矩形板的形式，翼 被设置成形成控制叶片的十字形部分。 翼和结构构件连接并支撑在中心连接构件上。 每个机翼中形成的每个翼或护套构件由稀释的合金形成，该稀释合金通过用诸如锆或钛的稀释剂稀释长寿命的中子吸收剂例如铪。 在稀释的合金部分中形成多个中子吸收器容纳孔。 具体来说，如果容纳孔形成为在翼的宽度方向上延伸，则形成在控制叶片的一部分中的每个壳体孔的截面面积对应于反应器堆中的副临界度变小后的区域 通过将控制刀片完全插入到芯中被关闭，大于其他区域中形成的壳体孔的尺寸。 具有应对中子吸收体溶胀的手段的结构可以应用于前一个区域。