公开(公告)号：US5371768A

公开(公告)日：1994-12-06

申请号：US989661

申请日：1992-12-14

申请人： Bruce Matzner

发明人： Bruce Matzner

IPC分类号： G21C3/34 ,  G21C3/322 ,  G21C3/344

CPC分类号： G21C3/344 ,  G21C3/322 ,  G21C2003/3432 ,  G21Y2002/201 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/38

摘要： In a boiling water nuclear reactor fuel bundle, the use of a shortened ferrule spacer in combination with overlying swirl vanes is set forth. In the preferred embodiment, the shortened ferrule spacer is placed under any swirl vanes and has an individual ferrule surrounding each fuel rod at the elevation of the spacer. Each ferrule is given both minimum side wall thickness in the range of 0.020 inches or less as well as reduced height in the order of 0.9 inch or less. The reduced height and thickness of the ferrule spacer is required to maintain pressure drop within acceptable limits and still tends to augment the required liquid film for steam generation over the fuel rod lengths downstream (that is immediately above) the spacer. At the same time, the swirl vane structure is placed immediately above the ferrule spacer overlying the so-called subchannel region of the ferrule spacer between the fuel rods.

摘要翻译： 在沸水核反应堆燃料束中，提出了使用缩短的套圈间隔件与上覆旋流叶片的组合。 在优选实施例中，缩短的套圈间隔件放置在任何旋转叶片下方，并且在间隔件的高度处具有围绕每个燃料棒的单独的套圈。 给予每个套圈的最小侧壁厚度在0.020英寸或更小的范围内，以及减小高度为0.9英寸或更小的量级。 需要减小套管间隔件的高度和厚度以将压降保持在可接受的限度内，并且仍然倾向于增加用于在隔离件下游（即紧靠上方）的燃料棒长度上产生蒸汽的所需液膜。 同时，涡流叶片结构紧紧地位于套管间隔件的上方，覆盖燃料棒之间的套圈间隔物的所谓子通道区域。

公开(公告)号：US4692302A

公开(公告)日：1987-09-08

申请号：US567450

申请日：1983-12-30

申请人： Edmund E. DeMario ,  Raymond F. Boyle ,  Peter J. Kuchirka

发明人： Edmund E. DeMario ,  Raymond F. Boyle ,  Peter J. Kuchirka

IPC分类号： G21C3/322 ,  G21C3/34 ,  G21C3/356

CPC分类号： G21C3/3563 ,  G21C3/322 ,  G21C2003/3432 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38

摘要： An improved grid structure is provided for a nuclear reactor fuel assembly whose sole purpose is to promote a crossflow mixing of the coolant through the fuel assembly rather than the support of the fuel rods. The grid straps form an egg-crate configuration creating cell openings for receiving the fuel rods. Associated with each cell opening is at least one coolant flow mixing vane that projects over the cell opening and four dimple protrusions which are open to the flow of coolant therethrough. The dimple protrusions extend into the cell opening to a further extent than the mixing vane so as to prevent damaging impact of the fuel rod with a vane upon transverse movement of the fuel rod across the cell opening. In reducing the pressure drop of the coolant flow through the assembly, the height of the inner grid straps is substantially less than the height of the outer border strap.

摘要翻译： 为核反应堆燃料组件提供了改进的格栅结构，其单一目的是促进冷却剂通过燃料组件的交叉流混合，而不是燃料棒的支撑。 网格带形成蛋箱配置，创建用于接收燃料棒的电池开口。 与每个电池开口相关联的是至少一个冷却剂流动混合叶片，其突出在电池开口和四个凹部突出部分之间，这些突起部通过其中的冷却剂流动开放。 凹坑突起延伸到电池开口中比混合叶片更大程度地延伸，以便防止燃料棒在燃料棒穿过电池开口的横向运动时对叶片的燃料棒的冲击。 在减少通过组件的冷却剂流的压降中，内网格带的高度实质上小于外边界带的高度。

公开(公告)号：US09934879B2

公开(公告)日：2018-04-03

申请号：US14646709

申请日：2013-11-28

申请人： AREVA NP

发明人： Jörg Peucker ,  Norbert Schmidt ,  Veit Marx ,  Julien Desbois

IPC分类号： G21C3/356 ,  G21C3/322 ,  G21C3/352 ,  G21C3/34

CPC分类号： G21C3/356 ,  G21C3/322 ,  G21C3/352 ,  G21C3/3566 ,  G21C2003/3432 ,  Y02E30/38

摘要： A fuel rod support insert for a nuclear fuel assembly spacer grid, a spacer grid and a nuclear fuel assembly are provided. The support insert is for a nuclear fuel assembly spacer grid comprising interlaced straps defining a lattice of cells for receiving fuel rods, the insert being adapted to be secured to the straps for extending in at least one cell. The insert extends along an axis intended to be parallel to that of a cell and comprises two axially spaced end portions for connecting the insert to the straps and at least one elongated blade-like spring extending axially between the end portions for supporting a fuel rod. The spring has a non-rectilinear cross-section in each plane perpendicular to the insert axis.

公开(公告)号：US20150287481A1

公开(公告)日：2015-10-08

申请号：US14646709

申请日：2013-11-28

申请人： AREVA NP

发明人： Jörg Peucker ,  Norbert Schmidt ,  Veit Marx ,  Julien Desbois

IPC分类号： G21C3/356 ,  G21C3/322

CPC分类号： G21C3/356 ,  G21C3/322 ,  G21C3/352 ,  G21C3/3566 ,  G21C2003/3432 ,  Y02E30/38

摘要： A fuel rod support insert for a nuclear fuel assembly spacer grid, a spacer grid and a nuclear fuel assembly are provided. The support insert is for a nuclear fuel assembly spacer grid comprising interlaced straps defining a lattice of cells for receiving fuel rods, the insert being adapted to be secured to the straps for extending in at least one cell. The insert extends along an axis intended to be parallel to that of a cell and comprises two axially spaced end portions for connecting the insert to the straps and at least one elongated blade-like spring extending axially between the end portions for supporting a fuel rod. The spring has a non-rectilinear cross-section in each plane perpendicular to the insert axis.

摘要翻译： 提供了用于核燃料组件间隔栅格，间隔栅格和核燃料组件的燃料棒支撑插入件。 支撑插入件用于核燃料组件间隔栅格，其包括限定用于接收燃料棒的电池格子的隔行带，该插入件适于固定到带子上以在至少一个电池中延伸。 插入件沿着旨在平行于电池单元的轴线延伸，并且包括用于将插入件连接到带子的两个轴向间隔开的端部和在端部之间轴向延伸的至少一个细长的叶片状弹簧，用于支撑燃料棒。 弹簧在垂直于刀片轴线的每个平面中具有非直线横截面。

公开(公告)号：US06816563B2

公开(公告)日：2004-11-09

申请号：US10312867

申请日：2003-01-02

申请人： Olov Nylund

发明人： Olov Nylund

IPC分类号： G21C318

CPC分类号： G21C3/344 ,  G21C2003/3432 ,  Y02E30/40

摘要： The invention concerns a spacer and a fuel assembly for a nuclear reactor. The spacer has a plurality of cells (10) for holding elongated elements. The cells (10) are defined by a plurality of side portions (12). At least one of said cells (10) has at least one side portion (12) from which a flow-influencing member (20) is formed in that it is folded out from the side portion (12). The side portion (12) from which the flow-influencing member (20) is folded out comprises a first (22) and a second (24) edge surface which are connected to each other and which correspond to the directions of a first (26) and a second (28) edge of said flow-influencing member (20) in a non folded out state of the flow-influencing member (20). The first edge surface (22) has an extension in at least a first direction (14) in which a cooling medium is intended to flow. The second edge surface (24) has an extension in a direction which is perpendicular to said first direction (14).

摘要翻译： 本发明涉及用于核反应堆的间隔器和燃料组件。 间隔件具有用于保持细长元件的多个电池单元（10）。 电池（10）由多个侧部（12）限定。 所述电池（10）中的至少一个具有至少一个侧部（12），其中形成有流动影响元件（20），因此从侧部（12）折出。 流动影响构件（20）从其折出的侧部分（12）包括彼此连接并且对应于第一（26）和第二（24）边缘表面的方向的第一（22）和第二（24）边缘表面 ）和所述流动影响构件（20）的第二（28）边缘处于所述流动影响构件（20）的非折叠状态。 第一边缘表面（22）在至少第一方向（14）上具有延伸，在第一方向（14）中，冷却介质将要流动。 第二边缘表面（24）在垂直于所述第一方向（14）的方向上具有延伸部。

公开(公告)号：US20030147487A1

公开(公告)日：2003-08-07

申请号：US10312867

申请日：2003-01-02

发明人： Olov Nylund

IPC分类号： G21C003/32

CPC分类号： G21C3/344 ,  G21C2003/3432 ,  Y02E30/40

摘要： The invention concerns a spacer and a fuel assembly for a nuclear reactor. The spacer has a plurality of cells (10) for holding elongated elements. The cells (10) are defined by a plurality of side portions (12). At least one of said cells (10) has at least one side portion(12) from which a flow-influencing member (20) is formed in that it is folded out from the side portion (12). The side portion (12) from which the flow-influencing member (20) is folded out comprises a first (22) and a second (24) edge surface which are connected to each other and which correspond to the directions of a first (26) and a second (28) edge of said flow-influencing member (20) in a non folded out state of the flow-influencing member (20). The first edge surface (22) has an extension in at least a first direction (14) in which a cooling medium is intended to flow. The second edge surface (24) has an extension in a direction which is perpendicular to said first direction (14).

摘要翻译： 本发明涉及用于核反应堆的间隔器和燃料组件。 间隔件具有用于保持细长元件的多个电池单元（10）。 电池（10）由多个侧部（12）限定。 所述电池（10）中的至少一个具有至少一个侧部（12），其中形成有流动影响元件（20），因此从侧部（12）折出。 流动影响构件（20）从其折出的侧部分（12）包括彼此连接并且对应于第一（26）和第二（24）边缘表面的方向的第一（22）和第二（24）边缘表面 ）和所述流动影响构件（20）的第二（28）边缘处于所述流动影响构件（20）的非折叠状态。 第一边缘表面（22）在至少第一方向（14）上具有延伸，在第一方向（14）中，冷却介质将要流动。 第二边缘表面（24）在垂直于所述第一方向（14）的方向上具有延伸部。

公开(公告)号：US06236702B1

公开(公告)日：2001-05-22

申请号：US09121930

申请日：1998-07-24

申请人： Tae-Hyun Chun ,  Dong-Seok Oh ,  Wang-Kee In ,  Kee-Nam Song ,  Heung-Seok Kang ,  Kyung-Ho Yoon ,  Dae-Ho Kim ,  Je-Geon Bang ,  Youn-Ho Jung

发明人： Tae-Hyun Chun ,  Dong-Seok Oh ,  Wang-Kee In ,  Kee-Nam Song ,  Heung-Seok Kang ,  Kyung-Ho Yoon ,  Dae-Ho Kim ,  Je-Geon Bang ,  Youn-Ho Jung

IPC分类号： G21C334

CPC分类号： G21C3/322 ,  G21C2003/3432 ,  Y02E30/38

摘要： A fuel assembly spacer grid including swirl deflectors respectively arranged at interconnections between interconnecting longitudinally and laterally-extending straps on upper ends of the interconnecting straps adapted to support fuel elements of a nuclear fuel assembly. Each of the swirl deflectors has four vanes bent to have an air vane shape. By virtue of this configuration, an improvement in the efficiency of the spacer grid cooling the fuel elements. The spacer grid also includes springs each configured to generate not only a main spring force caused by a displacement of the spring occurring when the spring comes into contact with a fuel element placed in a reactor core, but also an additional spring force caused by hydraulic pressure applied to the spring. Each spring, which is in a fixed state at one end thereof, has a free bent portion at the other end. By virtue of such a spring configuration, it is possible to compensate for a reduction in the initial spring force of the spring resulting from a change in the property of the spring material. The spring has a curved contact portion configured in such a manner that it is in conformal surface contact with a circumferential surface of the fuel element, thereby enhancing vibration suppressing and abrasion resistance forces.

摘要翻译： 一种燃料组件间隔栅格，其包括分别布置在相互连接的相互连接的相互连接的相互连接的带状连接带的纵向和横向延伸的带上的涡流偏转器，其适于支撑核燃料组件的燃料元件。 每个涡旋导流器具有弯曲成具有气翼形状的四个叶片。 由于这种结构，间歇栅格的效率的提高使燃料元件冷却。 间隔网格还包括弹簧，每个弹簧被配置成不仅产生由弹簧与放置在反应堆芯中的燃料元件接触而发生的弹簧位移引起的主弹簧力，而且还产生由液压引起的附加弹簧力 适用于春天。 在其一端处于固定状态的每个弹簧在另一端具有自由弯曲部分。 由于这种弹簧构造，可以补偿弹簧材料的特性变化导致的弹簧的初始弹簧力的减小。 该弹簧具有弯曲的接触部，其配置成与燃料元件的周面呈保形面接触，从而增强振动抑制和耐磨损力。

公开(公告)号：US09196386B2

公开(公告)日：2015-11-24

申请号：US13648322

申请日：2012-10-10

申请人： KEPCO NUCLEAR FUEL CO., LTD.

发明人： Sang Youn Jeon ,  Jung Min Suh ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Dong Geun Ha ,  Jin Sun Kim ,  Seong Soo Kim ,  Joo Young Ryu ,  Oh Joon Kwon

IPC分类号： G21C3/356 ,  G21C3/322 ,  G21C3/34

CPC分类号： G21C3/356 ,  G21C3/322 ,  G21C3/352 ,  G21C3/3563 ,  G21C2003/3432 ,  Y02E30/38

摘要： Disclosed herein is a spacer grid for a nuclear fuel assembly which is formed from grid strips of an improved structure, thus reducing flow-induced high-frequency vibration. The spacer grid has dimples or grid springs for supporting fuel rods and is formed from a plurality of grid strips assembled in a lattice shape to form lattice cells. Each of the grid strips has at least one slot formed in a planar portion of the grid strip separately from the dimple or grid spring. Therefore, characteristics of the vibration of the spacer grid can be set in a variety of different manners so that flow-induced high-frequency vibration can be reduced.

摘要翻译： 本文公开了一种用于核燃料组件的间隔栅格，其由改进结构的栅格条形成，从而减少流动引起的高频振动。 间隔栅格具有用于支撑燃料棒的凹坑或栅格弹簧，并且由多个栅格条形成，栅格条以格子形状形成以形成晶格单元。 每个格栅条具有至少一个槽，其形成在格栅条的平面部分中，与凹坑或格栅弹簧分开形成。 因此，可以以各种不同的方式设置间隔栅格的振动特性，从而可以降低流动的高频振动。

公开(公告)号：US20140037040A1

公开(公告)日：2014-02-06

申请号：US13648312

申请日：2012-10-10

申请人： KEPCO NUCLEAR FUEL CO., LTD.

发明人： Joo Young RYU ,  Jung Min SUH ,  Sang Youn JEON ,  Kyong Bo EOM ,  Joon Kyoo PARK ,  Dong Geun HA ,  Jin Sun KIM ,  Seong Soo KIM ,  Oh Joon KWON

IPC分类号： G21C3/356

CPC分类号： G21C3/356 ,  G21C3/322 ,  G21C3/3563 ,  G21C2003/3432 ,  Y02E30/38

摘要： Disclosed herein is a spacer grid for a nuclear fuel assembly. The spacer grid has dimples for supporting fuel rods and is formed from grid strips which are assembled in a lattice shape to form lattice cells. Each grid strip has at least one hole which is formed separately from the dimples. Therefore, when coolant is drawn into the fuel assembly, a pressure difference between opposite sides of the holes is reduced, and friction generated between cut edges of the holes and the coolant reduces the magnitude of the vibration and causes a damping effect, thus reducing flow-induced vibration. The hole formed in the grid strip function to widen the range of the frequency of the flow-induced vibration caused by vortex sheddings formed around the edges of the grid strip, thus reducing the possibility of the generation of resonance with the natural frequency of the spacer grid.

摘要翻译： 本文公开了一种用于核燃料组件的间隔栅格。 间隔栅格具有用于支撑燃料棒的凹坑，并且由栅格条形成，栅格条以栅格形状组装以形成晶格单元。 每个网格条具有至少一个与凹坑分开形成的孔。 因此，当冷​​却剂被吸入燃料组件时，孔的相对侧之间的压力差减小，并且孔的切割边缘与冷却剂之间产生的摩擦力降低了振动的大小并且产生阻尼效应，从而减少了流动 引起的振动。 形成在格栅条中的孔用于扩大由形成在格栅条边缘周围的涡流脱落引起的流动振动频率的范围，从而降低了与间隔物的固有频率产生共振的可能性 格。

公开(公告)号：US20130230133A1

公开(公告)日：2013-09-05

申请号：US13783426

申请日：2013-03-04

申请人： China Nuclear Power Technology Research Institute ,  CHINA GUANGDONG NUCLEAR POWER HOLDING

发明人： Wenchi Yu ,  Yuemin Zhou ,  Weicai Ll ,  Xiaoming Chen ,  Zhengzheng Pang ,  Jingwen Yan ,  Yan Guo

IPC分类号： G21C3/336

CPC分类号： G21C3/336 ,  G21C3/352 ,  G21C2003/3432 ,  Y02E30/40

摘要： A new, improved grid spacer for a nuclear fuel assembly is provided, comprising several straps which intersect each other alternatively to form a plurality of grid cells and fuel rods reside in some of the grid cells; the grid spacer further comprises mixing elements set at the corner of the grid cells in which the fuel rods have resided; wherein the mixing element comprises a mixing vane stretching towards the direction of the fuel rod and a flow funnel set on the bended edge of the mixing vane continuously and extending towards adjacent grid cells; the mixing vane and the flow funnel set across two sides of two adjacent grid cells respectively, and the flow funnel introduces the coolant in the grid cell at its side to the mixing vane, then the mixing vane introduces the coolant to the grid cell at its own side.

摘要翻译： 提供了一种用于核燃料组件的新的改进的格栅间隔件，其包括多个彼此相交的带，以形成多个网格单元，并且燃料棒位于一些网格单元中; 栅格间隔物还包括设置在燃料棒所在的格栅单元角落处的混合元件; 其中所述混合元件包括朝向所述燃料棒的方向延伸的混合叶片和连续地设置在所述混合叶片的弯曲边缘上并朝向相邻格栅单元延伸的流道; 混合叶片和流动漏斗分别设置在两个相邻的格栅单元的两侧，流道将其侧面的格栅池中的冷却剂引入混合叶片，然后混合叶片将冷却剂引入其网格单元 自己的一面