公开(公告)号：US08867693B2

公开(公告)日：2014-10-21

申请号：US11791915

申请日：2005-10-27

申请人： Pascal Burfin ,  Michel Bonnamour ,  Gilles Margier ,  Jürgen Stabel-Weinheimer ,  Mingmin Ren

发明人： Pascal Burfin ,  Michel Bonnamour ,  Gilles Margier ,  Jürgen Stabel-Weinheimer ,  Mingmin Ren

IPC分类号： G21C3/34 ,  G21C3/352

CPC分类号： G21C3/34 ,  G21C3/352 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A grid (13) for supporting nuclear fuel pencils (3) for a nuclear fuel assembly (1) comprising a peripheral belt (17), the peripheral belt (17) comprising on at least one of its edges (35, 37) guide fins (33) is disclosed. The edge (35, 37) of the peripheral belt (17) has between the adjacent guide fins (33) recesses (39) towards the inside of the grid (13). The invention is applicable, for example, to pressurized water reactors.

摘要翻译： 一种用于支撑用于核燃料组件（1）的核燃料铅笔（3）的格栅（13），其包括周边带（17），所述周边带（17）在其至少一个边缘（35,37）上包括引导翅片 （33）。 周边带（17）的边缘（35,37）在相邻的引导翅片（33）凹部（39）之间朝向格栅（13）的内部。 本发明可应用于例如压水反应堆。

公开(公告)号：US06888911B2

公开(公告)日：2005-05-03

申请号：US10612647

申请日：2003-07-02

申请人： Jürgen Stabel-Weinheimer ,  Mingmin Ren

发明人： Jürgen Stabel-Weinheimer ,  Mingmin Ren

IPC分类号： G21C3/28 ,  G21C3/33 ,  G21C3/34 ,  G21C3/344 ,  G21C3/356 ,  G21C3/336

CPC分类号： G21C3/33 ,  G21C3/356 ,  G21Y2002/101 ,  G21Y2002/303 ,  G21Y2004/30 ,  G21Y2004/403 ,  Y02E30/40

摘要： Transverse vibrations of the pellet columns included in the fuel rods of fuel elements are limited by elastically mounting the fuel rod jacket tubes in the mesh of spacer grids. When the fuel rods are supported in this way, flexural vibrations of a higher order occur that lead to damage to the jacket tubes caused by fretting. These vibrations are the less dampened the more rigid the fixture of the fuel rod is. These vibration conditions are more easily excited and more strongly dampened when the pellet columns are more mobile, thereby removing vibration energy from the fuel element and avoiding damage caused by fretting. The mobility of the columns can be increased by increasing the gap between the pellet and the jacket tube, or by using constructions in which a torque M≦10 N mm on the fuel rod leads to a tilting angle φ≧0.1°. For this purpose, the fuel rod can be retained in a mesh in such a manner that a distance d0≦10 mm between the highest and the lowest point of contact of the fuel rod is maintained on the holding element of the mesh.

摘要翻译： 包含在燃料元件的燃料棒中的颗粒柱的横向振动通过将燃料棒套管弹性地安装在间隔栅格网中来限制。 当以这种方式支撑燃料棒时，发生较高阶的弯曲振动，导致由于微动而导致的护套管损坏。 这些振动是较少的阻尼燃料棒的固定件更刚性。 当颗粒柱移动更多时，这些振动条件更容易激发并更强烈地衰减，从而消除了来自燃料元件的振动能量，并避免了由于微动造成的损坏。 可以通过增加颗粒和套管之间的间隙或通过使用燃料棒上的扭矩M 1 = 10mm N的结构导致倾斜角度θ= 0.1°来增加柱的迁移率。 为此，可以将燃料棒保持在网状物中，使燃料棒的最高和最低接触点之间的距离d 0 <= 10 mm保持在 保持网格的元素。