公开(公告)号：US06327324B2

公开(公告)日：2001-12-04

申请号：US09202494

申请日：1999-02-10

申请人： Olov Nylund

发明人： Olov Nylund

IPC分类号： G21C3326

CPC分类号： G21C3/328 ,  G21Y2002/20 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel assembly for a boiling water reactor comprising a plurality of fuel units (3a, 3b, 3c, 3d), stacked on top of each other, each one comprising a top tie plate (5), a bottom tie plate (6) and a plurality of fuel rods (4a, 4b, 4c) arranged between the top tie plate and the bottom tie plate. The fuel units are surrounded by a fuel channel (9) with a substantially square cross section. At least some of the fuel units comprise fuel rods with different diameters and different fuel quantities. The fuel rods are adapted such that fuel quantity and lattice space are optimized laterally and axially in the fuel assembly.

摘要翻译： 一种用于沸水反应堆的燃料组件，包括堆叠在彼此顶部的多个燃料单元（3a，3b，3c，3d），每个燃料单元包括顶板（5），底板（6）和 多个燃料棒（4a，4b，4c），布置在顶部连接板和底部连接板之间。 燃料单元被具有基本正方形横截面的燃料通道（9）围绕。 至少一些燃料单元包括具有不同直径和不同燃料量的燃料棒。 燃料棒适于使得燃料量和格子空间在燃料组件中被横向和轴向优化。

公开(公告)号：US6151376A

公开(公告)日：2000-11-21

申请号：US202498

申请日：1999-02-04

申请人： Olov Nylund ,  David Schrire

发明人： Olov Nylund ,  David Schrire

IPC分类号： G21C3/06 ,  G21C3/16 ,  G21C3/322 ,  G21C3/18 ,  G21C3/08 ,  G21C3/10

CPC分类号： G21C3/322 ,  G21C3/06 ,  G21C3/16 ,  G21Y2002/201 ,  G21Y2002/207 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/38

摘要： The present invention relates to a fuel assembly with a substantially square cross section for a light-water reactor. The light-water reactor comprises a plurality of fuel rods extending between a top tie plate and a bottom tie plate. A fuel rod comprises a cladding tube which surrounds a column with fissionable material. According to one aspect of the invention, at least one fuel rod is provided with an axial gap in the fissionable material. Around this axial gap, the mass of the material is greater than the mass of the material in the main part of the cladding tube.

摘要翻译： PCT No.PCT / SE97 / 01030 Sec。 371日期1999年2月4日 102（e）1999年2月4日PCT 1997年6月12日PCT公布。 公开号WO97 / 49091 日期1997年12月24日本发明涉及一种用于轻水反应器的具有基本正方形横截面的燃料组件。 轻水反应器包括在顶部连接板和底部连接板之间延伸的多个燃料棒。 燃料棒包括用可裂变材料围绕柱的包层管。 根据本发明的一个方面，至少一个燃料棒在可裂变材料中设置有轴向间隙。 围绕该轴向间隙，材料的质量大于包层管的主要部分中的材料的质量。

公开(公告)号：US5875223A

公开(公告)日：1999-02-23

申请号：US841400

申请日：1997-04-30

申请人： Olov Nylund

发明人： Olov Nylund

IPC分类号： G21C3/344

CPC分类号： G21C3/344 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A spacer for retaining and positioning elongated elements at one or a plurality of levels in a nuclear reactor fuel assembly comprises a grid structure of joined-together sleeve cells. A coolant is adapted to flow upwards through the fuel assembly. The majority of the sleeve cells are provided with an upstream edge with a waveform. The edge is waveformed in such a way that the upwardly flowing coolant first encounters a peak of the wave which is disposed between the joints of the sleeves and thereafter a valley of the wave which is disposed at the joints of the sleeves. The peaks are arranged closer to a center of the sleeve cell than the valleys. Between the peaks and valleys, oblique edges are formed.

摘要翻译： 用于在核反应堆燃料组件中的一个或多个水平面处保持和定位细长元件的间隔件包括连接在一起的套筒单元的格栅结构。 冷却剂适于向上流过燃料组件。 大多数套管单元设置有具有波形的上游边缘。 该边缘以这样的方式波形，使得向上流动的冷却剂首先遇到设置在套筒的接头之间的波的峰部，此后设置在套筒的接头处的波谷。 峰比布谷更靠近套筒细胞的中心。 在峰谷之间形成斜边。

公开(公告)号：US5859886A

公开(公告)日：1999-01-12

申请号：US913886

申请日：1997-09-25

申请人： Olov Nylund

发明人： Olov Nylund

IPC分类号： G21C3/16 ,  G21C3/17 ,  G21C3/326 ,  G21C3/334 ,  G21C3/32

CPC分类号： G21C3/326 ,  G21C3/17 ,  G21Y2002/201 ,  G21Y2002/302 ,  G21Y2002/402 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel assembly for a boiling water reactor comprises a bottom tie plate, a top tie plate, and a first and a second group of vertical fuel rods, each including a column of fuel pellets surrounded by a cladding tube. The second group of fuel rods has a shorter active length than the first group of fuel rods. Both the first and the second group of fuel rods extend between the bottom tie plate and the top tie plate. The second group of fuel rods comprises a fission gas plenum surrounded by a plenum tube arranged above the cladding tube. The main part of the plenum tube has a cross-section area which is smaller than the cross-section area of the cladding tube.

摘要翻译： PCT No.PCT / SE96 / 00454 Sec。 371日期：1997年9月25日 102（e）1997年9月25日PCT PCT 1996年4月9日PCT公布。 第WO96 / 37895号公报 日期：1996年11月28日沸水反应堆的燃料组件包括底板，顶板和第一组和第二组立式燃料棒，每组包括由包层管包围的燃料柱。 第二组燃料棒具有比第一组燃料棒更短的有效长度。 第一组燃料棒和第二组燃料棒都在底板和顶板之间延伸。 第二组燃料棒包括由布置在包层管上方的增压管围绕的裂变气体增压室。 增压管的主要部分的横截面面积小于包层管的横截面面积。

公开(公告)号：US5778035A

公开(公告)日：1998-07-07

申请号：US750587

申请日：1996-12-06

申请人： Olov Nylund

发明人： Olov Nylund

IPC分类号： G21C3/322 ,  G21C3/34 ,  G21C15/00

CPC分类号： G21C3/322 ,  G21C3/34 ,  G21Y2002/201 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/32 ,  Y02E30/38

摘要： A nuclear fuel core in a pressurized-water reactor including fuel assemblies, each of which comprise a top tie plate; a bottom tie plate, the top tie plate and the bottom tie plate having through-openings for passing coolant flowing from beneath upwards through each of the fuel assemblies; elongated elements, arranged between the top tie plate and the bottom tie plate; a mixing cross section having a mixing center, the mixing cross section extending through four orthogonally arranged fuel assemblies and having a size corresponding to at least that of two fuel assemblies; and a plurality of spacers for retaining and mutually fixing the elongated elements, the plurality of spacers having flow control members for controlling coolant flow around the mixing center. A nuclear fuel core in a boiling water reactor is also disclosed.

摘要翻译： PCT No.PCT / SE95 / 00635 Sec。 371日期1996年12月6日第 102（e）日期1996年12月6日PCT归档1995年6月2日PCT公布。 公开号WO95 / 34898 日期1995年12月21日在包括燃料组件的加压水反应堆中的核燃料芯，每个燃料组件包括顶部连接板; 底部连接板，顶部连接板和底部连接板具有用于使冷却剂从下方向下流过每个燃料组件的通孔; 细长元件，布置在顶部连接板和底部连接板之间; 具有混合中心的混合横截面，所述混合横截面延伸穿过四个正交布置的燃料组件并且具有至少对应于两个燃料组件的尺寸; 以及用于保持和相互固定细长元件的多个间隔件，所述多个间隔件具有用于控制混合中心周围的冷却剂流动的流动控制构件。 还公开了沸水反应器中的核燃料芯。

公开(公告)号：US5096660A

公开(公告)日：1992-03-17

申请号：US606924

申请日：1990-10-31

申请人： Olof Hembjer ,  Ragnar Mansson ,  Olov Nylund

发明人： Olof Hembjer ,  Ragnar Mansson ,  Olov Nylund

IPC分类号： G21C3/34 ,  G21C3/322

CPC分类号： G21C3/322 ,  G21Y2002/201 ,  G21Y2002/302 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38

摘要： A fuel assembly in the form of an elongated channel having several corners is connected to a coolant intended to flow through the channel. A bundle of similarly elongated fuel rods, retained by a plurality of spacers, is arranged in the channel, and arranged in the upper part of the fuel assembly, at least between a pair of spacers, is a sleeve formed of a sheet around the bundle. The sleeve has an external shape which conforms closely to the walls of the fuel assembly and is perforated by a large number of openings, the total surface of which is at least as large as the sheet surface remaining on one side of the sleeve.

公开(公告)号：US4839136A

公开(公告)日：1989-06-13

申请号：US109832

申请日：1987-10-16

申请人： Edmund E. DeMario ,  Anders Johansson ,  Olov Nylund

发明人： Edmund E. DeMario ,  Anders Johansson ,  Olov Nylund

IPC分类号： G21C3/34 ,  F04B49/10 ,  G21C3/356

CPC分类号： G21C3/3566 ,  Y02E30/40

摘要： A bimetallic spacer for supporting fuel rods in position in a nuclear reactor fuel assembly substantially comprises inner and outer structural elements of a first metallic material and spring elements of a second metallic material. The structural and spring elements together define a lattice, the interstices of which receive the individual fuel rods. The structural elements and spring elements in the spacer are connected together by forming the structural elements with openings and fitting the ends of the spring elements in the openings. At one end of the opening in the structural element, two slots can be provided for forming a tongue-shaped member which is moved aside to make space for the spring element and then moves back when the end of the spring element is in position, thus preventing a possible vertical return movement of the end of the spring element.

摘要翻译： 用于将燃料棒支撑在核反应堆燃料组件中的适当位置的双金属间隔件基本上包括第一金属材料的内部和外部结构元件以及第二金属材料的弹簧元件。 结构和弹簧元件一起限定格子，其间隙接收各个燃料棒。 间隔件中的结构元件和弹簧元件通过形成具有开口的结构元件并将弹簧元件的端部装配在开口中而连接在一起。 在结构元件的开口的一端，可以设置两个槽，用于形成舌状构件，该舌状构件被移动以使空间用于弹簧元件，然后当弹簧元件的端部就位时向后移动，因此 防止弹簧元件的端部的可能的垂直返回运动。

公开(公告)号：US07804931B2

公开(公告)日：2010-09-28

申请号：US10585910

申请日：2005-01-10

申请人： Sture Helmersson ,  Leif Larsson ,  Olov Nylund ,  H{dot over (a)}kan Söderberg

发明人： Sture Helmersson ,  Leif Larsson ,  Olov Nylund ,  H{dot over (a)}kan Söderberg

IPC分类号： G21C3/34

CPC分类号： G21C3/3424 ,  G21C3/34 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/40

摘要： The invention refers to a spacer for holding a number if elongated fuel rods intended to be located in a nuclear plant and to a fuel unit having such spacers. The spacer encloses a number of cells, which each has a longitudinal axis and is arranged to receive a fuel rod in such a way that the fuel rod extends in parallel with the longitudinal axis. Each cell is formed by a sleeve-like member. Each sleeve-like member is manufactured in a sheet-shaped material that is bent to the sleeve-like shape.

摘要翻译： 本发明涉及用于保持数量的间隔物，如果用于位于核电站中的细长燃料棒和具有这种间隔物的燃料单元。 间隔件包围多个单元，每个单元具有纵向轴线并且被布置成以使得燃料棒与纵向轴线平行延伸的方式容纳燃料棒。 每个单元由套筒状构件形成。 每个套筒状构件制成弯曲成套筒状的片状材料。

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：US5363422A

公开(公告)日：1994-11-08

申请号：US870922

申请日：1992-04-20

申请人： Olov Nylund ,  Ragnar Mansson ,  Torsten Olsson ,  Tibor Farkas ,  Thorbjorn Sahlin

发明人： Olov Nylund ,  Ragnar Mansson ,  Torsten Olsson ,  Tibor Farkas ,  Thorbjorn Sahlin

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

CPC分类号： G21C3/322 ,  G21C3/344 ,  G21Y2002/302 ,  G21Y2004/30 ,  Y02E30/38

摘要： Spacers (10) with a cell-formed lattice-work for retaining parallel elongated elements such as fuel rods (5) into a bundle in a nuclear reactor fuel assembly are arranged in a suitable spaced relationship to each other along the bundle, and the cells are formed from tubular sleeves (1). Each one of these sleeves (1) offers a passage for one of the elements in order to fix the elements in relation to each other. Substantially half the number of sleeves (1) in a spacer (10), distributed evenly over the cross section of the bundle, are located in a first plane across the bundle and are joined to each other inside a first frame (11) surrounding the bundle, thereby forming a lattice of sleeves (1) and gaps (13). The remaining sleeves (1) of the spacer (10) are joined together inside a second frame (12) surrounding the bundle and are located in a second plane, separate from the first plane, across the bundle. These sleeves (1) also form a lattice of sleeves (1) and gaps (13), the sleeves (1) in the different planes being arranged in such a way that an element fixed by a sleeve (1) in the first plane freely traverses a gap (13) arranged in the second plane and vice versa.

摘要翻译： 具有用于将平行细长元件（例如燃料棒（5））保持在核反应堆燃料组件中的束中的细胞形成的格子布置的间隔件（10）沿着束彼此以适当的间隔关系布置，并且细胞 由管状套筒（1）形成。 这些套筒（1）中的每一个为这些元件之一提供通道，以便相对于彼此固定元件。 基本上分布在束的横截面上的隔离物（10）中的一半的套筒（1）位于跨束的第一平面中，并且在围绕着该束的第一框架（11）内相互连接 从而形成套筒（1）和间隙（13）的格子。 间隔件（10）的剩余套筒（1）在围绕束的第二框架（12）内连接在一起，并且位于与第一平面分离的第二平面中。 这些套筒（1）也形成一个套筒（1）和间隙（13）的格子，不同平面中的套筒（1）以这样一种方式排列，使得由第一平面中的套筒（1）固定的元件自由地 穿过布置在第二平面中的间隙（13），反之亦然。