公开(公告)号：US06385271B1

公开(公告)日：2002-05-07

申请号：US09202613

申请日：1999-02-10

Applicant: Olov Nylund

Inventor： Olov Nylund

IPC: G21C3322

Abstract: The present invention relates to a fuel assembly for a light-water reactor with a substantially square cross section wherein the fuel assembly comprises a plurality of fuel rods (4). The fuel rods (4) extend between a bottom tie plate (5) and a top tie plate (6) and a coolant is adapted to flow upwards through the fuel assembly. At least one of the top tie plates (6) or the bottom tie plates (5) comprises flow openings (22, 22a, 22b) for the passage of the coolant and side supports (17) for supporting the fuel rods (4) in the lateral direction. The side supports (17) are designed in one and the same sheet-metal piece as the flow openings (22, 22a, 22b) and the side supports (17) are folded substantially 90° in relation to the other structure of the top tie plate (6) or the bottom tie plate (5).

公开(公告)号：US06272197B1

公开(公告)日：2001-08-07

申请号：US09402703

申请日：1999-10-06

Applicant: Timothy James Abram ,  John Woodside Gillespie

Inventor： Timothy James Abram ,  John Woodside Gillespie

IPC: G21C3322

CPC classification number: G21C3/322 ,  G21Y2002/201 ,  G21Y2004/305 ,  Y02E30/38

Abstract: A fuel assembly for a nuclear reactor is described, the fuel assembly including: a plurality of fuel pins (12) extending substantially parallel to the axis of the assembly and to each other; at least two structural grids spaced apart from each other, the grids being in contact with said fuel pins (12) and maintaining said fuel pins substantially mutually parallel and preventing contact therebetween, wherein the fuel assembly further comprises at least one mixing grid (50) situated intermediate said at least two structural grids, the fuel assembly being characterized in that said mixing grid (50) is positioned and fixedly located out of substantial contact with said fuel pins (12), the mixing grid also having turbulence inducing means (61) to promote turbulence in a coolant (62) flowing through said fuel assembly in use and in that the mixing grid is formed from sheet metal wherein the plane of the metal sheet from which the mixing grid is formed lies in a plane which is transverse to the axis of the fuel pin assembly.

Abstract translation: 描述了用于核反应堆的燃料组件，燃料组件包括：基本上平行于组件的轴线并彼此延伸的多个燃料销（12）; 至少两个彼此间隔开的结构网格，所述网格与所述燃料销（12）接触并且保持所述燃料销基本相互平行并防止其间的接触，其中所述燃料组件还包括至少一个混合格栅（50） 所述燃料组件的特征在于，所述混合格栅（50）定位并固定地位于与所述燃料销（12）基本接触之外，所述混合格栅还具有湍流诱导装置（61） 以促进在使用中流过所述燃料组件的冷却剂（62）中的湍流，并且混合格栅由金属板形成，其中形成混合格栅的金属板的平面位于横向于 燃油销组件的轴线。

公开(公告)号：US06516042B2

公开(公告)日：2003-02-04

申请号：US09202639

申请日：1999-02-05

Applicant: Sture Helmersson

Inventor： Sture Helmersson

IPC: G21C3322

CPC classification number: G21C3/322 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/38

Abstract: The invention relates to a fuel assembly for a boiling water reactor which is adapted, during operation of the reactor, to allow water to flow upwards through the fuel assembly while absorbing heat from a plurality of fuel rods, whereby part of the water is transformed into steam. The fuel assembly comprises a steam channel through which the steam flows through the fuel assembly. The steam channel (16a, 16b, 16c, 16d) consists of an empty volume which at least extends through part of the fuel assembly. The fuel assembly is designed such that the water and the steam are brought to rotate around the steam channel whereby the water is thrown away from the steam channel whereas the steam which is separated from the water flows upwards through the steam channel.

Abstract translation: 本发明涉及一种用于沸水反应器的燃料组件，其在反应器运行期间适于允许水向上流过燃料组件，同时从多个燃料棒吸收热量，由此部分水被转化成 蒸汽。 燃料组件包括蒸汽通道，蒸汽通过该蒸汽通道流过燃料组件。 蒸汽通道（16a，16b，16c，16d）由至少延伸穿过燃料组件的一部分的空的体积组成。 燃料组件被设计成使得水和蒸汽围绕蒸汽通道旋转，由此水被从蒸汽通道抛出，而与水分离的蒸汽向上流过蒸汽通道。

公开(公告)号：US06415011B1

公开(公告)日：2002-07-02

申请号：US09388387

申请日：1999-09-01

Applicant: Sture Helmersson

Inventor： Sture Helmersson

IPC: G21C3322

CPC classification number: G21C3/344 ,  G21C3/322 ,  G21Y2002/201 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/38

Abstract: The invention concerns a spacer (14) for a nuclear boiling water reactor. The spacer (14) comprises a plurality of cells (16) for holding or allowing elongated elements (12) to pass through the cells. Between the cells (16) there are a plurality of flow channels (18). The spacer comprises at least a plurality of deflecting members (22). The deflecting member comprises a vane (24) which extends in a direction from a cell (16) into the neighbouring flow channel (18). The vane is inclined relative to a vertical plane (26) and is wider in its upper part than in its lower part. The invention also concerns a fuel assembly for a nuclear boiling water reactor, comprising a deflecting member with vane of similar construction.

Abstract translation: 本发明涉及核沸水反应器的间隔物（14）。 间隔物（14）包括用于保持或允许细长元件（12）穿过细胞的多个细胞（16）。 在单元（16）之间有多个流动通道（18）。 所述间隔件包括至少多个偏转构件（22）。 偏转构件包括沿着从单元（16）到相邻流动通道（18）的方向延伸的叶片（24）。 叶片相对于垂直平面（26）倾斜并且在其上部比在其下部更宽。 本发明还涉及一种用于核沸水反应堆的燃料组件，其包括具有类似结构的叶片的偏转构件。

公开(公告)号：US06526116B1

公开(公告)日：2003-02-25

申请号：US08887017

申请日：1997-07-02

Applicant: Quang M. Nguyen ,  Yu C. Lee ,  Edmund E. DeMario ,  Jeffrey J. Fodi ,  Darin L. Redinger ,  Levie D. Smith, III

Inventor： Quang M. Nguyen ,  Yu C. Lee ,  Edmund E. DeMario ,  Jeffrey J. Fodi ,  Darin L. Redinger ,  Levie D. Smith, III

IPC: G21C3322

CPC classification number: G21C3/352 ,  G21C3/322 ,  G21Y2002/302 ,  G21Y2002/303 ,  Y02E30/38

Abstract: A support grid for laterally maintaining the relative position of elongated fuel elements within a fuel assembly for use within a core of a nuclear reactor. The grid is formed in the shape of a lattice with the intersecting lattice members defining a plurality of cells, most of which respectively support the nuclear fuel elements. The remaining cells support nuclear control rod guide tubes and instrumentation thimbles. The cells supporting the nuclear fuel elements are provided with diagonally positioned springs on two, adjacent walls. The springs support the fuel elements against dimples which protrude from the opposite cell walls. The adjacent, diagonal springs in each fuel element cell are inclined in opposite directions. The walls of the cells supporting the control rod guide tubes are embossed along their height at the locations intermediate the intersection between adjoining walls with a concave notch having a curvature which conforms to the outside surface curvature of the control rod guide tubes. The grid is provided with mixing vanes which are positioned in a symmetrical, regional pattern, with the pattern varying between adjacent regions, and configured such that the hydraulic forces across the center of the grid are balanced. The grid is reinforced with welds at the mid point of the intersection of the lattice straps.

Abstract translation: 用于横向维持细长燃料元件在燃料组件内的相对位置以用于核反应堆的核心内的支撑网格。 栅格形成为具有限定多个单元的相交晶格构件的格子形状，其中大部分单元分别支撑核燃料元件。 剩余的电池支持核控制杆导管和仪表套管。 支撑核燃料元件的电池在两个相邻的壁上设置有对角定位的弹簧。 弹簧将燃料元件抵靠从相对的细胞壁突出的凹坑。 每个燃料元件单元中相邻的对角弹簧在相反方向上倾斜。 支撑控制棒引导管的单元的壁在其相邻壁之间的相交处之间的位置处沿着它们的高度被压印，凹槽具有符合控制棒导管的外表面曲率的曲率。 格栅设置有以对称的局部图案定位的混合叶片，其中图案在相邻区域之间变化，并且构造成使得横跨网格中心的液压力平衡。 格栅在格子带交叉点的中点用焊缝加固。

公开(公告)号：US06487266B1

公开(公告)日：2002-11-26

申请号：US09690441

申请日：2000-10-18

Applicant: Gary E. Dix ,  James C. Shaug

Inventor： Gary E. Dix ,  James C. Shaug

IPC: G21C3322

CPC classification number: G21C7/26 ,  G21C3/322 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  Y02E30/38 ,  Y02E30/39

Abstract: A fuel bundle assembly for a boiling water nuclear reactor comprising a plurality of fuel rods having respective fuel columns therein, and arranged in an ordered array, extending between upper and lower support structures, the plurality of fuel rods enclosed within a hollow, open-ended channel member at least partially enclosed by the open-ended channel member; at least one water rod supported on the lower tie plate and extending upwardly toward the upper tie plate, the at least one water rod having an upward flow path including at least one inlet at a lower end of the upward flow path, and a downward flow path including at least one outlet at a lower end of the downward flow path, the at least one outlet located about midway along the fuel columns within the fuel rods.

Abstract translation: 一种用于沸水核反应堆的燃料束组件，包括多个燃料棒，其中具有各自的燃料柱，并且以有序阵列布置，在上部和下部支撑结构之间延伸，所述多个燃料棒包围在中空的开放端 通道构件至少部分地由开放式通道构件包围; 所述至少一个水杆支撑在所述下连接板上并朝向所述上连接板向上延伸，所述至少一个水杆具有向上流动路径，所述向上流动路径包括在所述向上流动路径的下端处的至少一个入口，以及向下流动 该路径包括在向下流动路径的下端处的至少一个出口，所述至少一个出口位于沿燃料棒内的燃料柱的中途。

公开(公告)号：US06333957B1

公开(公告)日：2001-12-25

申请号：US09440513

申请日：1999-11-15

Applicant: William C. Peters ,  David G. Smith ,  Edward G. Apple, Jr.

Inventor： William C. Peters ,  David G. Smith ,  Edward G. Apple, Jr.

IPC: G21C3322

CPC classification number: G21C21/00 ,  G21C3/322 ,  G21C3/334 ,  G21C17/06 ,  G21Y2002/302 ,  G21Y2002/304 ,  G21Y2002/402 ,  G21Y2004/501 ,  Y02E30/38

Abstract: A tool kit for adjusting the angular orientation of water rods about respective axes in a nuclear fuel bundle includes a washer wrench, socket, orientator wrenches, orientator gauges and an orientator cap. The washer wrench has opposed jaws having parallel surfaces and reliefs at junctures between the surfaces and the base of the jaws to inhibit rounding off corners of tie bars connected to the water rods. The socket has a corresponding D-shaped recess as the tie bar ends to facilitate rotational adjustment thereof. Orientator wrenches have witness notches for aligning the flats of the tie bars. The orientator gauges comprise a series of gauge bodies each having a pair of axially parallel openings with stepped margins to the openings such that one opening is axially offset from the margin defining the entrance to the other opening. The orientator cap has complementary-shaped openings for receiving the upper ends of the tie bars to maintain the orientation of the tie bars and water rods during shipment of the fuel bundle.

Abstract translation: 一种用于调节水棒在角度方向上的角度方向的工具包，包括一个垫圈扳手，插座，定向扳手，定向计和取向盖。 垫圈扳手具有相对的夹爪，其在表面和夹爪的基部之间的接合处具有平行的表面和浮雕，以防止连接到水杆的连接条的角落四周。 当连接杆端部时，插座具有相应的D形凹槽，以便于其旋转调节。 定向扳手已经存在用于对准连接条的平面的凹口。 定向计包括一系列测量体，每个测量体具有一对轴向平行的开口，其具有到开口的阶梯状边缘，使得一个开口从限定另一个开口的入口的边缘轴向偏移。 定向器盖具有用于接收连杆的上端的互补形状的开口，以在燃料束运输期间保持连杆和水杆的取向。