专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US07215729B1 Fuel assembly and nuclear reactor 失效
标题翻译：燃料装配和核反应堆
公开(公告)号：US07215729B1
公开(公告)日：2007-05-08
申请号：US08470424
申请日：1995-06-06
申请人： Osamu Yokomizo , Yuichiro Yoshimoto , Yoshiyuki Kataoka , Shinichi Kashiwai , Yasuhiro Masuhara , Akio Tomiyama , Akihito Orii , Kotaro Inoue , Takaaki Mochida , Tatsuo Hayashi
发明人： Osamu Yokomizo , Yuichiro Yoshimoto , Yoshiyuki Kataoka , Shinichi Kashiwai , Yasuhiro Masuhara , Akio Tomiyama , Akihito Orii , Kotaro Inoue , Takaaki Mochida , Tatsuo Hayashi
IPC分类号： G21C15/00 , G21C19/28
CPC分类号： G21C3/322 , G21Y2002/201 , G21Y2002/30 , G21Y2004/302 , G21Y2004/40 , Y02E30/38
摘要： A resistance member (e.g., fuel holding portion of the lower tie plate) is provided at the lower end of the fuel assembly. Provision is made of a coolant ascending path in which said water rods have coolant inlet ports that are open in a region lower than the resistance member to upwardly guide the coolant, and a coolant descending path which has a coolant delivery port that is open in a region higher than the resistance member to downwardly guide the coolant. The coolant ascending path and the coolant descending path are communicated with each other at their upper end portions.
摘要翻译：电阻构件（例如，下连接板的燃料保持部）设置在燃料组件的下端。设置有冷却剂上升路径，其中所述水杆具有在低于阻力构件的区域中开口的冷却剂入口端口，以向上引导冷却剂;以及冷却剂下降路径，其具有在区域高于电阻构件以向下引导冷却剂。冷却剂上升路径和冷却剂下降路径在其上端部彼此连通。

42. 发明申请

US20060227925A1 Four point contact structural spacer grid 审中-公开
标题翻译：四点接触结构间隔网格
公开(公告)号：US20060227925A1
公开(公告)日：2006-10-12
申请号：US11101683
申请日：2005-04-08
申请人： Michael Marzean
发明人： Michael Marzean
IPC分类号： G21C3/34
CPC分类号： G21C3/322 , G21C3/352 , G21C3/356 , Y02E30/38
摘要： A four point contact grid for a nuclear fuel assembly, that is structured to engage at least one generally cylindrical fuel rod. The four point contact grid includes a plurality of elongated, generally flat straps including a first set of straps and a second set of straps, each strap having a plurality of cell portions. The straps are divided into a first set and a second set. The first set of straps are disposed in a spaced parallel relation to each other. The second set of straps are also disposed in a spaced parallel relation to each other and are generally perpendicular to the first set of straps. The first set of straps and second set of straps are coupled to each other thereby forming a plurality of generally square cells. Each strap cell portion has at least one protrusion. Each the strap cell portion further has only a single protrusion extending into each cell. Each the protrusion is either an elongated spring or an elongated dimple. Thus, each the fuel rod is contacted by only four protrusions in each cell.
摘要翻译：用于核燃料组件的四点接触栅格，其被构造成接合至少一个大致圆柱形的燃料棒。四点接触栅格包括多个细长的，大致平坦的带，包括第一组带和第二组带，每个带具有多个单元部分。皮带分为第一组和第二组。第一组带子以彼此间隔开的平行关系设置。第二组带子也以彼此间隔开的平行关系设置并且大致垂直于第一组带子。第一组带和第二组带彼此连接，从而形成多个大致方形的单元。每个带状细胞部分具有至少一个突起。每个带单元部分还具有仅延伸到每个单元中的单个突起。每个突起都是细长的弹簧或细长的凹坑。因此，每个燃料棒在每个电池中只有四个突起接触。

43. 发明申请

US20060222140A1 Eccentric support grid for nuclear fuel assembly 审中-公开
标题翻译：用于核燃料组件的偏心支撑电网
公开(公告)号：US20060222140A1
公开(公告)日：2006-10-05
申请号：US11098657
申请日：2005-04-04
申请人： Yuriy Aleshin , James Sparrow
发明人： Yuriy Aleshin , James Sparrow
IPC分类号： G21C3/32
CPC分类号： G21C3/356 , G21C3/322 , Y02E30/38
摘要： In a nuclear reactor fuel assembly structured to support at least one non-linear fuel rod, the nuclear reactor fuel assembly includes at least two support grids, a first support grid and a second support grid structured to support at least one fuel rod in a non-linear shape. Each support grid has a plurality of generally square cells and wherein the cells on the first support grid and the second support grid are generally vertically aligned. Each cell has a first side, a second side, a third side, and a fourth side. Each cell further has protrusions extending from each the cell sides, wherein the protrusions are selected from the group including a spring, a dimple or an extended dimple. A spring is always disposed opposite of a dimple or an extended dimple. The first support grid includes at least one cell having an extended dimple extending from at least one cell side. The second support grid includes at least one cell aligned with the first support grid at least one cell having an extended dimple, wherein the second support grid cell has an extended dimple extending from a cell side other than cell side having an extended dimple on the first support grid. Thus, the extended dimples cause the fuel rod to be deformed.
摘要翻译：在构造成支撑至少一个非线性燃料棒的核反应堆燃料组件中，所述核反应堆燃料组件包括至少两个支撑栅格，第一支撑栅格和第二支撑栅格，所述第二支撑栅格被构造成支撑至少一个燃料棒，线形。每个支撑格栅具有多个大致方形的单元，并且其中第一支撑格栅和第二支撑格栅上的单元大致垂直对齐。每个单元具有第一侧，第二侧，第三侧和第四侧。每个单元还具有从每个单元侧延伸的突起，其中突起从包括弹簧，凹坑或延伸的凹坑的组中选择。春天总是与凹坑或延伸的凹坑相对放置。第一支撑格栅包括至少一个具有从至少一个单元侧延伸的延伸凹部的单元。第二支撑格栅包括与第一支撑格栅对准的至少一个单元，至少一个具有延伸凹坑的单元，其中第二支撑格栅单元具有从单元侧延伸的扩展凹坑，单元侧在第一支持网格。因此，延伸的凹坑导致燃料棒变形。

44. 发明授权

US06912264B2 Fuel assembly 失效
标题翻译：燃油组件
公开(公告)号：US06912264B2
公开(公告)日：2005-06-28
申请号：US10642548
申请日：2003-08-15
申请人： Werner Meier , Peter Rau
发明人： Werner Meier , Peter Rau
IPC分类号： G21C3/322 , G21C3/34 , G21C3/332
CPC分类号： G21C3/322 , G21C3/34 , G21Y2004/302 , Y02E30/38
摘要： A fuel element for a nuclear reactor has fuel rods with nuclear fuel guided through spacers. The spacers are equipped with devices that exert a swirling impulse upon a coolant flowing along the fuel rods. In order to present as little flow resistance as possible for the coolant, these swirl-introducing devices have the form of a vane with a spoonlike or bladelike shape and they extend into the coolant flow. Owing to the shape—here the vane is curved in the longitudinal and in the transverse directions—practically all cross sections of the vane have such a high geometrical moment of inertia that even a vane made of a thin sheet metal is sufficiently rigid. Fuel elements configured according to the invention are particularly suitable for use in boiling water nuclear reactors.
摘要翻译：用于核反应堆的燃料元件具有通过间隔物引导的具有核燃料的燃料棒。间隔件配备有对沿着燃料棒流动的冷却剂施加旋转脉冲的装置。为了对冷却剂呈现尽可能小的流动阻力，这些涡流引入装置具有勺状或扁平形状的叶片的形式，并且它们延伸到冷却剂流中。由于形状，这里叶片在纵向和横向方向上是弯曲的，实际上叶片的所有横截面都具有如此高的几何惯性矩，即使由薄金属板制成的叶片也足够刚性。根据本发明配置的燃料元件特别适用于沸水核反应堆。

45. 发明申请

US20040076253A1 Filter for cooling water in a light water cooled nuclear reactor 有权
标题翻译：在轻水冷核反应堆中过滤冷却水
公开(公告)号：US20040076253A1
公开(公告)日：2004-04-22
申请号：US10466832
申请日：2003-11-19
发明人： Anders Soderlund , Hakan Soderberg
IPC分类号： G21C019/42
CPC分类号： G21C3/322 , G21C3/3206 , Y02E30/38
摘要： The invention refers to a filter (1) for separating particle from cooling water in a nuclear plant, and a fuel assembly with such a filter. The filter has an inlet end (2) and an outlet end (3) and permits through-flow of the cooling water in a main flow direction (x). The filter includes a number of sheets (4) extending in the flow direction from the inlet end to the outlet end. The sheets are arranged beside each other and form passages for the cooling water. The sheets include a first portion (4null) extending from the inlet end (2), a second portion (4null) extending from the outlet end (3), and a third portion (4nullnull) extending between the first portion (4null) and the second portion (4null). The sheets (4) have along the first portion continuous wave-shape extending in a direction (y) transversally to the flow direction (x) and along the third portion a continuous wave-shape extending in the flow direction (x).
摘要翻译：本发明涉及一种用于从核设备中的冷却水中分离颗粒的过滤器（1）和具有这种过滤器的燃料组件。过滤器具有入口端（2）和出口端（3），并允许冷却水在主流动方向（x）上流过。过滤器包括从入口端到出口端在流动方向上延伸的多个片材（4）。这些片彼此相邻布置并形成冷却水的通道。片材包括从入口端（2）延伸的第一部分（4'），从出口端（3）延伸的第二部分（4“）和在第一部分（4”）之间延伸的第三部分部分（4'）和第二部分（4“）。片材（4）具有沿着沿流动方向（x）横向方向（y）延伸的第一部分连续波形，并沿着第三部分沿着流动方向（x）延伸的连续波形。

46. 发明申请

US20030138073A1 Spacer grid with side welding support and flow mixing vane for nuclear reactor fuel assembly 有权
标题翻译：用于核反应堆燃料组装的侧面支撑和流动混合叶片的间隔栅格
公开(公告)号：US20030138073A1
公开(公告)日：2003-07-24
申请号：US10281472
申请日：2002-10-25
发明人： Dongseok Oh , Taehyun Chun , Wangkee In , Keenam Song , Hyungkyu Kim , Heungseok Kang , Kyungho Yoon , Younho Jung
IPC分类号： G21C003/34
CPC分类号： G21C3/322 , G21C3/3424 , Y02E30/38
摘要： A spacer grid for nuclear fuel assemblies is disclosed. This spacer grid has a plurality of side weld supports, that is, main supports, upper sub-supports and lower sub-supports, on its interlaced inner straps, with two flow mixing vanes integrally extending upward from each of the main supports. This spacer grid is fabricated by seam-welding the interlaced first and second inner straps to each other along the upper axial junction lines of the crossing main and upper sub-supports at the top of the intersections, and along the lower axial junction lines of the crossing lower sub-supports at the bottom of the intersections, thus forming side weld lines at the intersections. This spacer grid reduces the damage of fuel rod during a fuel rod insertion process by decreasing interference between flow mixing vanes and fuel rods, accomplishes a desired soundness by seam welding, improves the coolant mixing efficiency of the flow mixing vanes by excluding welding windows, and reduces hydraulic resistance caused by weld beads.
摘要翻译：公开了用于核燃料组件的间隔栅格。该间隔栅格在其交错的内带上具有多个侧面焊接支撑件，即主支撑件，上副支撑件和下副支撑件，其中两个流动混合叶片从每个主支撑件向上整体地延伸。该间隔栅格是通过沿交叉的顶部与交叉主顶部和上部副支承件的上部轴向连接线将隔行的第一和第二内部带彼此沿缝合焊接而制造的，在交叉点的底部交叉下部副支撑，从而在交叉点处形成侧面焊接线。该隔离栅格通过减少流动混合叶片和燃料棒之间的干扰，通过缝焊实现所需的稳定性，从而在燃料棒插入过程中减少燃料棒的损坏，通过排除焊接窗口来提高流动混合叶片的冷却剂混合效率，以及降低由焊缝引起的液压阻力。

47. 发明授权

US06507630B1 Cell flow diverter and flow diverter/vortex generator assembly for BWR spacers 失效
标题翻译：用于BWR垫片的电池流分流器和流量分配器/涡流发生器组件
公开(公告)号：US06507630B1
公开(公告)日：2003-01-14
申请号：US09562866
申请日：2000-05-01
申请人： David G. Smith , James E. Maynard
发明人： David G. Smith , James E. Maynard
IPC分类号： G21C334
CPC分类号： G21C3/322 , G21Y2002/302 , G21Y2002/402 , G21Y2004/30 , Y02E30/31 , Y02E30/38
摘要： A flow diverter is provided for attachment to a spacer cell above a part-length fuel rod. The flow diverter includes a tubular base having a plurality of laterally projecting tabs extending in an upstream direction for diverting flow from between the spacer cells into the volume above the spacer void of a fuel rod. A vortex generator is secured to or forms an integral part with the flow diverter for swirling the flow onto and into the interstices of laterally adjacent fuel rods. The flow diverter and vortex generator are formed of tubular stock. The vanes of the vortex generator are formed by providing slits along the tubular stock and twisting alternating edges of the stock inwardly to form the vanes.
摘要翻译：提供了一种分流器，用于连接到部分长度燃料棒上方的间隔室。流动分流器包括管状基座，其具有沿上游方向延伸的多个横向突出的突出部分，用于将间隔器单元之间的流动转移到燃料棒的间隔件空间上方的体积中。涡流发生器被固定到流动分流器或与流动分流器形成一体的部分，以将流体旋转到横向相邻的燃料棒的空隙中并进入横向相邻的燃料棒的间隙中。流量分配器和涡流发生器由管状原料形成。涡流发生器的叶片通过沿着管状坯料提供狭缝并向内扭转坯料的交替边缘而形成叶片。

48. 发明申请

US20020075987A1 Fuel element for a boiling water nuclear reactor 有权
标题翻译：用于沸水核反应堆的燃料元件
公开(公告)号：US20020075987A1
公开(公告)日：2002-06-20
申请号：US09883479
申请日：2001-06-18
发明人： Dieter Bender , Otmar Bender , Hans-Joachim Lippert , Walter Ubelhack
IPC分类号： G21C003/32
CPC分类号： G21C3/322 , Y02E30/31 , Y02E30/38
摘要： In a boiling water fuel assembly, some of the fuel rods are shortened. It is necessary to establish a sufficiently high maximum power for transition to boiling. To optimize this power, spacers are at a constant distance at a bottom and are at a shorter distance at a top. The spacers belonging to upper group have turbulence-generating vanes which, however, do not project above the shortened fuel rods.
摘要翻译：在沸水燃料组件中，一些燃料棒被缩短。有必要建立足够高的最大功率以过渡到沸腾。为了优化该功率，间隔件在底部处于恒定的距离并且在顶部处于较短距离处。属于上部的间隔件具有湍流产生叶片，然而，它们不会突出在缩短的燃料棒之上。

49. 发明授权

US06393087B1 Duct-type spacer grid with swirl flow vanes for nuclear fuel assemblies 有权
标题翻译：具有用于核燃料组件的旋流流动叶片的管道型间隔栅格
公开(公告)号：US06393087B1
公开(公告)日：2002-05-21
申请号：US09439713
申请日：1999-11-12
申请人： Dong-Seok Oh , Tae-Hyun Chun , Wang-Kee In , Kee-Nam Song , Hyung-Kyu Kim , Heung-Seok Kang , Kyung-Ho Yoon , Youn-Ho Jung
发明人： Dong-Seok Oh , Tae-Hyun Chun , Wang-Kee In , Kee-Nam Song , Hyung-Kyu Kim , Heung-Seok Kang , Kyung-Ho Yoon , Youn-Ho Jung
IPC分类号： G21C334
CPC分类号： G21C3/322 , G21C3/344 , G21C3/3566 , G21Y2002/201 , G21Y2002/303 , G21Y2004/30 , Y02E30/38
摘要： A duct-type spacer grid for nuclear fuel assemblies is disclosed. In this spacer grid, a plurality of duct-shaped grid elements, individually having an octagonal cell, are closely arranged in parallel and are welded together, thus forming a matrix structure. The grid elements do not pass across the center of the subchannel of the assembly, thus effectively reducing pressure loss. Each of the grid elements is formed as an independent cell, and so they effectively resist against a lateral impact. A plurality of integral type swirl flow vanes, having different heights or same height, axially extend from the top of the grid to be positioned within each subchannel. The swirl flow vanes are bent outwardly, and so they do not contact the fuel rods during an insertion of the fuel rods into the cells. In the spacer grid, the fuel rods are supported within the cells by line contact springs without using any dimple. The spacer grid thus uniformly distributes its spring force on the fuel rods and almost completely prevents damage of the fuel rods due to fretting wear.
摘要翻译：公开了一种用于核燃料组件的导管型间隔栅格。在这种间隔栅格中，多个具有八边形单元格的管状栅格元件被平行地紧密排列并且被焊接在一起，从而形成矩阵结构。网格元件不会穿过组件的子通道的中心，从而有效地减少压力损失。每个栅格元件形成为独立的单元，因此它们有效抵抗横向冲击。具有不同高度或相同高度的多个整体式涡流流动叶片从网格的顶部轴向延伸以定位在每个子通道内。涡流流动叶片向外弯曲，因此在将燃料棒插入单元中时它们不接触燃料棒。在间隔网格中，燃料棒通过线接触弹簧支撑在电池内，而不使用任何凹坑。间隔栅格因此将其弹簧力均匀地分布在燃料棒上，并几乎完全防止由于微动磨损导致燃料棒的损坏。

50. 发明授权

US06278758B1 Support grid for a nuclear reactor fuel assembly 有权
标题翻译：用于核反应堆燃料组件的支撑电网
公开(公告)号：US06278758B1
公开(公告)日：2001-08-21
申请号：US09266188
申请日：1999-03-10
申请人： Masahiko Imaizumi , Takayuki Suemura
发明人： Masahiko Imaizumi , Takayuki Suemura
IPC分类号： G21C334
CPC分类号： G21C3/352 , G21C3/322 , G21Y2002/201 , G21Y2004/30 , G21Y2004/302 , Y02E30/32 , Y02E30/38
摘要： An improved support grid of a nuclear reactor fuel assembly is described. The support grid has a plurality of first and second straps which are assembled so as to form an eggcrate structure defining grid cells in a square arrangement. The support grid includes a plurality of mixing vanes integrally formed on a side edge of the first and second straps adjacent to an area where the straps cross. The mixing vanes slanted to be adjacent to a fuel rod are each shaped to show no welding apertures formed therein in their horizontal planes of projection thereby maximizing the coolant impinging area to agitate and swirl a coolant flow.
摘要翻译：描述了核反应堆燃料组件的改进的支撑网格。支撑网格具有多个第一和第二条带，其被组装以形成以正方形布置定义网格单元的蛋壳结构。支撑格栅包括多个混合叶片，其整体地形成在第一和第二带的侧边缘上，邻近带子交叉的区域。倾斜与燃料棒相邻的混合叶片各自被成形为在其突出的水平平面中没有形成在其中的焊接孔，从而使冷却剂冲击面积最大化以搅拌和旋转冷却剂流。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式