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公开(公告)号：EP2839469B1
公开(公告)日：2017-09-06
申请号：EP13780970.3
申请日：2013-02-07
IPC分类号： G21C3/34
CPC分类号： G21C3/352 , G21C1/32 , G21C3/3563 , Y02E30/40
摘要： A spacer grid includes intersecting straps defining cells with springs and dimples arranged to hold fuel rods passing through the cells. The direction of the springs switches at a switch point in the spacer grid that is not at the center of the spacer grid. The intersecting straps may include a first set of mutually parallel straps including a first transition strap and a second set of mutually parallel straps including a second transition strap, with the second set intersecting the first set. The springs of the first set of mutually parallel straps face away from the first transition strap, and the springs of the second set of mutually parallel straps face away from the second transition strap. The outer straps in some embodiments include dimples but not springs.
摘要翻译： 定位格栅包括相交的带，所述相交的带限定具有弹簧和凹坑的单元，所述弹簧和凹坑被布置成容纳穿过单元的燃料棒。 弹簧的方向在不在定位格的中心的定位格中的开关点处切换。 交叉带可以包括第一组相互平行的带，第一组相互平行的带包括第一过渡带和第二组相互平行的带，第二组相互平行的带包括第二过渡带，第二组相交于第一组。 第一组相互平行的带的弹簧远离第一过渡带，并且第二组相互平行的带的弹簧远离第二过渡带。 一些实施例中的外带包括凹痕但不包括弹簧。
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公开(公告)号：EP2837002A2
公开(公告)日：2015-02-18
申请号：EP13787598.5
申请日：2013-02-13
IPC分类号： G21C7/20
摘要： A control rod assembly including at least one movable control rod including a neutron absorbing material, a control rod drive mechanism (CRDM) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a terminal element engaged with a connecting rod of the CRDM and the at least one moveable control rod, and a kinetic energy absorbing element supported by the terminal element for absorbing kinetic energy during a SCRAM event, the kinetic energy absorbing element configured to act between the terminal element and an upper plate of an associated fuel assembly.
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公开(公告)号：EP2839485A1
公开(公告)日：2015-02-25
申请号：EP13778166.2
申请日：2013-04-17
发明人： WALTON, Lewis, A. , PABIS, George, S. , ULLMANN, Julius, M. , RAAS, Jean, H. , GILLIAM, Martha, A. , AUSTIN, Anne, R. , BARRINGER, Eric, A.
CPC分类号： G21C13/024 , G21C1/32 , G21C3/3315 , G21C7/08 , G21C7/12 , G21C13/02 , G21C13/04 , Y02E30/39
摘要： A pressurized water reactor (PWR) comprises a pressure vessel containing primary coolant water. A nuclear reactor core is disposed in the pressure vessel and includes a plurality of fuel assemblies. Each fuel assembly includes a plurality of fuel rods containing a fissile material. A control system includes a plurality of control rod assemblies (CRA's). Each CRA is guided by a corresponding CRA guide structure. A support element is disposed above the CRA guide structures and supports the CRA guide structures. The pressure vessel may be cylindrical, and the support element may comprise a support plate having a circular periphery supported by the cylindrical pressure vessel. The CRA guide structures suitably hang downward from the support plate. The lower end of each CRA guide structure may include alignment features that engage corresponding alignment features of the upper end of the corresponding fuel assembly.
摘要翻译： 压水反应堆（PWR）包括容纳一次冷却水的压力容器。 核反应堆堆芯设置在压力容器中并包括多个燃料组件。 每个燃料组件包括含有易裂变材料的多个燃料棒。 控制系统包括多个控制杆组件（CRA's）。 每个CRA由相应的CRA指导结构指导。 支撑元件设置在CRA引导结构上方并且支撑CRA引导结构。 压力容器可以是圆柱形的，并且支撑元件可以包括具有由圆柱形压力容器支撑的圆形周边的支撑板。 CRA引导结构适当地从支撑板向下悬挂。 每个CRA引导结构的下端可以包括与相应燃料组件的上端的对应对齐特征相接合的对齐特征。
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公开(公告)号：EP2839469A2
公开(公告)日：2015-02-25
申请号：EP13780970.3
申请日：2013-02-07
IPC分类号： G21C3/34
CPC分类号： G21C3/352 , G21C1/32 , G21C3/3563 , Y02E30/40
摘要： A spacer grid includes intersecting straps defining cells with springs and dimples arranged to hold fuel rods passing through the cells. The direction of the springs switches at a switch point in the spacer grid that is not at the center of the spacer grid. The intersecting straps may include a first set of mutually parallel straps including a first transition strap and a second set of mutually parallel straps including a second transition strap, with the second set intersecting the first set. The springs of the first set of mutually parallel straps face away from the first transition strap, and the springs of the second set of mutually parallel straps face away from the second transition strap. The outer straps in some embodiments include dimples but not springs.
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公开(公告)号：EP2839485B1
公开(公告)日：2018-03-07
申请号：EP13778166.2
申请日：2013-04-17
发明人： WALTON, Lewis, A. , PABIS, George, S. , ULLMANN, Julius, M. , RAAS, Jean, H. , GILLIAM, Martha, A. , AUSTIN, Anne, R. , BARRINGER, Eric, A.
CPC分类号： G21C13/024 , G21C1/32 , G21C3/3315 , G21C7/08 , G21C7/12 , G21C13/02 , G21C13/04 , Y02E30/39
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公开(公告)号：EP2837002B1
公开(公告)日：2017-08-23
申请号：EP13787598.5
申请日：2013-02-13
摘要： A control rod assembly including at least one movable control rod including a neutron absorbing material, a control rod drive mechanism (CRDM) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a terminal element engaged with a connecting rod of the CRDM and the at least one moveable control rod, and a kinetic energy absorbing element supported by the terminal element for absorbing kinetic energy during a SCRAM event, the kinetic energy absorbing element configured to act between the terminal element and an upper plate of an associated fuel assembly.
摘要翻译： 一种控制杆组件，其包括至少一个包括中子吸收材料的可移动控制杆，用于控制所述至少一个控制杆的移动的控制杆驱动机构（CRDM）以及可操作地连接所述至少一个控制杆和所述CRDM 。 所述联接件包括与所述CRDM的连接杆和所述至少一个可移动控制杆接合的终端元件以及由所述终端元件支撑的用于在SCRAM事件期间吸收动能的动能吸收元件，所述动能吸收元件配置为 在端子元件和相关燃料组件的上板之间作用。
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公开(公告)号：EP2839470B1
公开(公告)日：2017-08-09
申请号：EP13781593.2
申请日：2013-02-07
CPC分类号： G21C3/352 , G21C1/32 , G21C3/3563 , Y02E30/40
摘要： A spacer grid includes intersecting straps defining cells with springs and dimples arranged to hold fuel rods passing through the cells. The springs are dual cantilevered springs with a bridge section between the distal end of the spring and the base. The distal portion of the spring is less stiff than the bridge section. The bridge section creates a bump which acts as a stop or travel limiter to prevent loss of grip force due to excessive spring deflection.
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公开(公告)号：EP2839470A2
公开(公告)日：2015-02-25
申请号：EP13781593.2
申请日：2013-02-07
IPC分类号： G21C3/352
CPC分类号： G21C3/352 , G21C1/32 , G21C3/3563 , Y02E30/40
摘要： A spacer grid includes intersecting straps defining cells with springs and dimples arranged to hold fuel rods passing through the cells. The springs are dual cantilevered springs with a bridge section between the distal end of the spring and the base. The distal portion of the spring is less stiff than the bridge section. The bridge section creates a bump which acts as a stop or travel limiter to prevent loss of grip force due to excessive spring deflection.
摘要翻译： 定位格栅包括相交的带，所述相交的带限定具有弹簧和凹坑的单元，所述弹簧和凹坑被布置成容纳穿过单元的燃料棒。 弹簧是双悬臂弹簧，在弹簧的远端和基座之间具有桥接部分。 弹簧的远端部分比桥接部分更硬。 桥接部分创建了一个凸起，用作止动或行程限制器，以防止由于过度的弹簧偏转而导致的抓地力损失。
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