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1. 发明授权

US5978429A Method and device for operating a reactor in an unstable state 有权
公开(公告)号：US5978429A
公开(公告)日：1999-11-02
申请号：US185848
申请日：1998-11-04
申请人： Dieter Kreuter , Godehard Rauch , Joachim Schulze
发明人： Dieter Kreuter , Godehard Rauch , Joachim Schulze
IPC分类号： G21C17/00 , G05B9/02 , G05B23/02 , G21C7/00 , G21D3/00 , G21D3/08
CPC分类号： G21D3/08 , G21C7/00 , G21Y2002/201 , G21Y2002/204 , G21Y2002/205 , G21Y2002/207 , G21Y2002/208 , G21Y2002/304 , G21Y2004/30 , G21Y2004/40 , Y02E30/31 , Y02E30/39
摘要： A transiently unstable state of a boiling-water reactor is damped by measuring the oscillating neutron flux and, after a first threshold value is exceeded over a plurality of oscillation periods, the rate of increase of the oscillation is determined. Depending on the slope of the increase, and after a further threshold value (in particular one dependent on the rate of increase) for the oscillating flux is exceeded, a selection is made which one of various stabilization strategies for damping the oscillation should be triggered before a SCRAM becomes necessary. A hierarchy of stabilization strategies is available: blocking a power increase, for instance, in the control system, controlled slow reduction of the power, or rapid power reduction by a "partial SCRAM". The monitoring of the unstable state is effected with a system of sensors strategically distributed throughout the core and which redundantly measure the flux in one region of the core. The sensors act on a plurality of redundantly operating systems, and the signal from each sensor is effective in only one of the redundant systems.

2. 发明授权

US5875221A Method and device for operating a reactor in an unstable state 失效
公开(公告)号：US5875221A
公开(公告)日：1999-02-23
申请号：US890258
申请日：1997-07-09
申请人： Dieter Kreuter , Godehard Rauch , Joachim Schulze
发明人： Dieter Kreuter , Godehard Rauch , Joachim Schulze
IPC分类号： G21C17/00 , G05B9/02 , G05B23/02 , G21C7/00 , G21D3/00 , G21D3/08
CPC分类号： G21D3/08 , G21C7/00 , G21Y2002/201 , G21Y2002/204 , G21Y2002/205 , G21Y2002/207 , G21Y2002/208 , G21Y2002/304 , G21Y2004/30 , G21Y2004/40 , Y02E30/31 , Y02E30/39
摘要： A transiently unstable state of a boiling-water reactor is damped by measuring the oscillating neutron flux and, after a first threshold value is exceeded over a plurality of oscillation periods, the rate of increase of the oscillation is determined. Depending on the slope of the increase, and after a further threshold value (in particular one dependent on the rate of increase) for the oscillating flux is exceeded, a selection is made which one of various stabilization strategies for damping the oscillation should be triggered before a SCRAM becomes necessary. A hierarchy of stabilization strategies is available: blocking a power increase, for instance, in the control system, controlled slow reduction of the power, or rapid power reduction by a "partial SCRAM". The monitoring of the unstable state is effected with a system of sensors strategically distributed throughout the core and which redundantly measure the flux in one region of the core. The sensors act on a plurality of redundantly operating systems, and the signal from each sensor is effective in only one of the redundant systems.

3. 发明授权

US6122339A Method and device for operating a reactor in an unstable state 有权
标题翻译：用于操作处于不稳定状态的反应器的方法和装置
公开(公告)号：US6122339A
公开(公告)日：2000-09-19
申请号：US186000
申请日：1998-11-04
申请人： Dieter Kreuter , Godehard Rauch , Joachim Schulze
发明人： Dieter Kreuter , Godehard Rauch , Joachim Schulze
IPC分类号： G21C17/00 , G05B9/02 , G05B23/02 , G21C7/00 , G21D3/00 , G21D3/08 , G21C7/36 , G21C17/108
CPC分类号： G21D3/08 , G21C7/00 , G21Y2002/201 , G21Y2002/204 , G21Y2002/205 , G21Y2002/207 , G21Y2002/208 , G21Y2002/304 , G21Y2004/30 , G21Y2004/40 , Y02E30/31 , Y02E30/39
摘要： A transiently unstable state of a boiling-water reactor is damped by measuring the oscillating neutron flux and, after a first threshold value is exceeded over a plurality of oscillation periods, the rate of increase of the oscillation is determined. Depending on the slope of the increase, and after a further threshold value (in particular one dependent on the rate of increase) for the oscillating flux is exceeded, a selection is made which one of various stabilization strategies for damping the oscillation should be triggered before a SCRAM becomes necessary. A hierarchy of stabilization strategies is available: blocking a power increase, for instance, in the control system, controlled slow reduction of the power, or rapid power reduction by a "partial SCRAM". The monitoring of the unstable state is effected with a system of sensors strategically distributed throughout the core and which redundantly measure the flux in one region of the core. The sensors act on a plurality of redundantly operating systems, and the signal from each sensor is effective in only one of the redundant systems.
摘要翻译：通过测量振荡中子通量来阻止沸水反应堆的瞬时不稳定状态，并且在多个振荡周期中超过第一阈值之后，确定振荡的增加速率。取决于增加的斜率，并且在超过振荡通量的另外的阈值（特别是取决于增加速率）之后，进行选择，以便在以下触发各种用于阻尼振荡的稳定策略之一： SCRAM变得必要。稳定策略的层次结构是可用的：例如在控制系统中阻止功率增加，控制电力的缓慢降低或通过“部分SCRAM”快速降低功率。不稳定状态的监测通过策略性分布在整个核心上的传感器系统进行，并且冗余地测量核心的一个区域中的通量。传感器作用于多个冗余操作系统，并且来自每个传感器的信号仅在冗余系统中的一个中有效。

4. 发明申请

US20050220261A1 Fuel assembly for a boiling water reactor 审中-公开
标题翻译：用于沸水反应堆的燃料组件
公开(公告)号：US20050220261A1
公开(公告)日：2005-10-06
申请号：US10914913
申请日：2004-08-09
申请人： Dieter Kreuter , Peter Rau , Reinhart Zimmermann , Dieter Bender , Walter Uebelhack , Werner Meier
发明人： Dieter Kreuter , Peter Rau , Reinhart Zimmermann , Dieter Bender , Walter Uebelhack , Werner Meier
IPC分类号： G21C3/32
CPC分类号： G21C3/322 , G21C3/34 , Y02E30/31 , Y02E30/38
摘要： A fuel assembly for a boiling water reactor has a plurality of fuel rods which are mounted in a plurality of spacers disposed at a spacing distance from each other in the axial direction of the fuel element. At least one of the fuel rods has a reduced length. Deflection elements are arranged at least in the upper region of the fuel element in order to improve the dry-out behavior of the assembly. The fuel assembly further includes measures that reduce a loss of pressure caused in the upper region by the deflecting elements so as to improve thermo-hydraulic stability and the shutdown behavior.
摘要翻译：一种用于沸水反应器的燃料组件具有多个燃料棒，它们安装在沿燃料元件的轴向彼此间隔设置的多个间隔件中。至少一个燃料棒具有减小的长度。至少在燃料元件的上部区域设置偏转元件，以便改善组件的干燥行为。燃料组件还包括通过偏转元件减少在上部区域中引起的压力损失的措施，以便提高热液压稳定性和关闭性能。

5. 发明授权

US06600799B1 Fuel element with fuel rods for a boiling water reactor 失效
标题翻译：燃料元件，带有用于沸水反应堆的燃料棒
公开(公告)号：US06600799B1
公开(公告)日：2003-07-29
申请号：US09668702
申请日：2000-09-25
申请人： Dieter Kreuter
发明人： Dieter Kreuter
IPC分类号： G21C332
CPC分类号： G21C3/328 , G21C3/322 , G21Y2002/201 , G21Y2004/302 , Y02E30/31 , Y02E30/32 , Y02E30/38
摘要： For the redistribution of a coolant flow from a first region into a second region, in particular in boiling-water-reactor fuel elements having an eccentrically disposed water passage, a fuel-rod bundle is constructed in a mirror symmetry manner relative to a diagonal. A distance between adjacent fuel rods increases monotonically in particular along a diagonal. In addition, a fuel-rod bundle as an entity may be offset eccentrically along the diagonal. To compensate for asymmetry in the reactor core, a redistribution of coolant is provided which is advantageous in pressurized-water-reactor fuel elements.
摘要翻译：为了将冷却剂流从第一区域重新分配到第二区域，特别是在具有偏心设置的水通道的沸水反应堆燃料元件中，燃料棒束相对于对角线以镜像对称的方式构造。相邻燃料棒之间的距离特别是沿对角线单调增加。此外，作为实体的燃料棒束可以沿对角线偏心偏移。为了补偿反应堆芯中的不对称性，提供了冷却剂的再分配，这在加压 - 水 - 反应堆燃料元件中是有利的。

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