公开(公告)号：WO1998028753A1

公开(公告)日：1998-07-02

申请号：PCT/SE1997002020

申请日：1997-12-03

Applicant: ABB ATOM AB ,  NYLUND, Olov

Inventor： ABB ATOM AB

IPC: G21C15/16

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

Abstract: A fuel assembly for a boiling water reactor comprising at least one rotary cell (13a-13d) which has fuel rods (4) arranged in a number of concentric rings with a substantially circular shape, and a steam conducting channel (17a-17d) arranged in the centre of the concentric rings through which steam flows upwards through the fuel assembly. At least certain of the fuel rods in the rings are arranged such that their upper ends are displaced in relation to their lower ends in the tangential direction such that water and steam are brought to rotate around the steam conducting channel.

Abstract translation: 一种用于沸水反应器的燃料组件，包括至少一个旋转单元（13a-13d），所述旋转单元具有布置在多个圆形形状的多个同心环中的燃料棒（4），以及布置在所述蒸汽导电通道（17a-17d） 在同心环的中心，蒸汽向上通过燃料组件。 环中的至少一些燃料棒被布置成使得它们的上端相对于其下端在切线方向上移位，使得水和蒸汽围绕蒸汽传导通道旋转。

公开(公告)号：WO1998021728A1

公开(公告)日：1998-05-22

申请号：PCT/SE1997001897

申请日：1997-11-11

Applicant: ABB ATOM AB ,  ERIKSSON, Sven

Inventor： ABB ATOM AB

IPC: G21C07/24

CPC classification number: G21C21/18 ,  G21C7/24 ,  G21Y2002/104 ,  G21Y2004/20 ,  Y02E30/39

Abstract: A method of producing a neutron absorption means for a control rod in a nuclear plant, the neutron absorption means comprising a compound of at least one neutron absorbing agent and an additional component, characterized in that a powder, comprising said compound, and a powder, comprising the neutron absorbing agent in an essentially pure state, are mixed and subjected to a pressing at an elevated temperature, in such a way that a solid body is formed, the content of the neutron absorbing agent in relation to the additional component being higher in the solid body than in the original compound. Furthermore, the invention relates to a neutron absorbing means for a control rod in a nuclear plant, the means comprising a compound with the composition BxCy, where x/y is greater than 4. The invention relates also to the use of such a neutron absorbing means for a control rod in a nuclear plant.

Abstract translation: 一种生产用于核电厂中的控制棒的中子吸收装置的方法，所述中子吸收装置包括至少一种中子吸收剂和另外的组分的化合物，其特征在于，包含所述化合物的粉末和粉末， 包括基本上纯的状态的中子吸收剂混合并在升高的温度下进行压制，使得形成固体，中子吸收剂相对于附加组分的含量高 固体比原来的复合物。 此外，本发明涉及用于核电站中的控制棒的中子吸收装置，该装置包括具有组合物BxCy的化合物，其中x / y大于4.本发明还涉及使用这种中子吸收 核电厂控制棒的手段。

公开(公告)号：WO1997049092A1

公开(公告)日：1997-12-24

申请号：PCT/SE1997001081

申请日：1997-06-18

Applicant: ABB ATOM AB ,  FREDIN, Bo ,  HELMERSSON, Sture ,  NYLUND, Olov

Inventor： ABB ATOM AB

IPC: G21C03/18

CPC classification number: G21C3/328 ,  G21C3/18 ,  G21Y2002/207 ,  G21Y2004/305 ,  Y02E30/38

Abstract: 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 (4) extending between a top tie plate (5) and a bottom tie plate (6). A fuel rod (4) comprises a cladding tube (7a) with a first and a second end which surround a column with fissionable material (7b). According to one aspect of the invention, at least one fuel rod (4) is provided with an axial gap (19) in the fissionable material (7b), such that fissionable material (7b) is arranged on both sides of the axial gap (19) in the fuel rod (4).

Abstract translation: 本发明涉及一种具有用于轻水反应器的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（5）和底部连接板（6）之间延伸的多个燃料棒（4）。 燃料棒（4）包括具有第一和第二端的包层管（7a），所述第一和第二端围绕具有可裂变材料（7b）的柱。 根据本发明的一个方面，至少一个燃料棒（4）在可裂变材料（7b）中设置有轴向间隙（19），使得可裂变材料（7b）布置在轴向间隙的两侧 19）在燃料棒（4）中。

公开(公告)号：WO1996025617A1

公开(公告)日：1996-08-22

申请号：PCT/SE1996000132

申请日：1996-02-05

Applicant: ABB ATOM AB ,  KORNFELDT, Hans ,  KÖRNVIK, Lars-Åke ,  TÖRNBLOM, Lars

Inventor： ABB ATOM AB

IPC: F16L13/04

CPC classification number: F16L55/17

Abstract: A winding clamp (1) and a method for locking the tail end (5b) of a winding tape (5a) or a winding wire therein. The clamp is intended to be placed around a tubular component (3) and comprises a sleeve divided along axial sections, into at least two sleeve parts (4), which are arranged in spaced relationship and provided with first and second ends (4a, 4b), respectively. The sleeve is rotatably arranged around the tubular component and its outer surface is adapted to receive at least one winding (5) comprising a plurality of layers of the tape/wire. At least at the first ends (4a) of the sleeve parts, a locking ring (7) is arranged which is divided along axial sections and rotatable independently of the sleeve. The tail end (5b) of the tape/wire is fixed to the locking ring, which is rotated in a direction opposite to the direction of winding, such that the remaining part of the tape/wire is securely wound around the locking ring (7) and over the tail end of the tape/wire, whereupon the locking ring (7) is fixed to the sleeve.

Abstract translation: 卷绕夹具（1）和用于将卷绕带（5a）或绕组线的尾端（5b）锁定在其中的方法。 夹具旨在围绕管状部件（3）放置并且包括沿着轴向部分分开的套筒，至少两个套筒部件（4），它们以间隔的关系布置，并且设置有第一和第二端部（4a，4b） ）， 分别。 套管围绕管状部件可旋转地布置，并且其外表面适于容纳至少一个包括多个带/线的层的绕组（5）。 至少在套筒部分的第一端（4a）处，设置有锁定环（7），其沿着轴向部分分开并且可独立于套筒旋转。 带/线的尾端（5b）固定在锁定环上，锁定环沿与卷绕方向相反的方向旋转，使得带/线的剩余部分牢固地缠绕在锁定环（7）上 ）并且在带/线的尾端上方，锁定环（7）固定到套筒上。

公开(公告)号：WO1996019811A1

公开(公告)日：1996-06-27

申请号：PCT/SE1995001472

申请日：1995-12-07

Applicant: ABB ATOM AB ,  WOLFRAM, Dietmar

Inventor： ABB ATOM AB

IPC: G21C03/322

CPC classification number: G21C3/34 ,  G21C3/322 ,  G21Y2002/201 ,  G21Y2002/302 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38

Abstract: The present invention relates to a spacer (7) comprising a plurality of cells (9) to retain and mutually fix, at a plurality of spacer levels, parallel, elongated elements (3, 8), extending through the cells, into a bundle in a fuel assembly for a nuclear reactor. A coolant is adapted to flow from below and upwards through the fuel assembly. Between the cells (9) of the spacer (7), secondary channels (10) are formed. The invention is characterized in that at least the majority of the spacer levels in the secondary channels (10) comprise at least two deflection members (14) which are axially spaced-apart in the direction of flow for guiding at least part of the coolant flow towards the fuel rods which are aranged close to the secondary channels (10).

Abstract translation: 本发明涉及一种间隔物（7），其包括多个单元（9），以在多个间隔物水平上保持和相互固定平行延伸穿过细胞的细长元件（3,8） 用于核反应堆的燃料组件。 冷却剂适于从下方和上方流过燃料组件。 在间隔件（7）的电池单元（9）之间形成第二通道（10）。 本发明的特征在于，次级通道（10）中的至少大部分间隔物级包括至少两个偏转构件（14），其在流动方向上轴向间隔开，以引导冷却剂流的至少一部分 朝向靠近次级通道（10）排列的燃料棒。

公开(公告)号：WO1995034898A1

公开(公告)日：1995-12-21

申请号：PCT/SE1995000635

申请日：1995-06-02

Applicant: ABB ATOM AB ,  NYLUND, Olov

Inventor： ABB ATOM AB

IPC: G21C03/322

CPC classification number: G21C3/322 ,  G21C3/34 ,  G21Y2002/201 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/32 ,  Y02E30/38

Abstract: A method and a device for guiding a coolant flow in a light-water nuclear reactor. The guiding of the coolant flow is performed within a mixing cross section which comprises four orthogonally arranged sub-regions (1, 1a, 1c), in their turn comprising whole or parts of fuel assemblies (1). In each sub-region (1, 1a, 1c) there is arranged at least one level which comprises spacers (7) which are provided with flow control members (12) adapted such that the coolant is guided from one sub-region (1, 1a, 1c) to an adjacent sub-region (1, 1a, 1c), thus equalizing the enthalpy of the coolant in the mixing cross section.

Abstract translation: 一种用于在轻水核反应堆中引导冷却剂流的方法和装置。 冷却剂流的引导在包括四个正交布置的子区域（1,1a，1c）的混合横截面内进行，其又包括燃料组件（1）的全部或多个部分。 在每个子区域（1,1a，1c）中，布置有至少一个级，其包括间隔件（7），间隔件（7）设置有流动控制构件（12），适于使得冷却剂从一个子区域（1， 1a，1c）连接到相邻的子区域（1,1a，1c），从而使混合横截面中的冷却剂的焓均匀。

公开(公告)号：WO1995034077A1

公开(公告)日：1995-12-14

申请号：PCT/SE1995000634

申请日：1995-06-02

Applicant: ABB ATOM AB ,  OCIECZEK, Grzegorz ,  TIUSANEN, Mika

Inventor： ABB ATOM AB

IPC: G21C17/108

CPC classification number: G21C17/108 ,  G21Y2002/204 ,  G21Y2002/206 ,  G21Y2004/403 ,  Y10S706/915

Abstract: A method for supervision of a neutron flux detector in a nuclear reactor comprising a plurality of neutron flux detectors. During a learning phase, connection weights of a neural network are determined, which network comprises at least one input layer (31) and one output layer (33). The input layer comprises a number of processing elements adapted to receive a number of input signals (S(t) - S(t-49 DELTA t)), and the output layer comprises a number of process elements adapted to deliver a number of state signals (N1, N2, N3, N4). The determination of the connection weights is done by supplying to the network a plurality of sets of input signals with known state signals, by comparing the state signals calculated by the network with the known state signals, and by successively correcting the connection weights to reduce the deviation between the known and the calculated state signals. During a supervision phase the neural network is supplied with input signals corresponding to measured values at different times from the supervised detector, and based on the connection weights determined during the learning phase, the state signals are calculated. In dependence of the calculated state signals and the state signals of a number of selected reference detectors, it is determined whether the detector is defective.

Abstract translation: 一种用于在包括多个中子通量检测器的核反应堆中监测中子通量检测器的方法。 在学习阶段，确定神经网络的连接权重，哪个网络包括至少一个输入层（31）和一个输出层（33）。 输入层包括适于接收多个输入信号（S（t）-S（t-49 DELTA t））的多个处理元件，并且输出层包括适于递送多个状态的多个处理元件 信号（N1，N2，N3，N4）。 通过将由网络计算的状态信号与已知状态信号进行比较，并且通过连续地校正连接权重以减少连接权重来确定连接权重是通过向网络提供具有已知状态信号的多组输入信号 已知和计算出的状态信号之间的偏差。 在监督阶段，神经网络被提供有与监督检测器不同时间的测量值对应的输入信号，并且基于在学习阶段确定的连接权重，计算状态信号。 根据计算出的状态信号和多个选择的参考检测器的状态信号，确定检测器是否有故障。

公开(公告)号：WO1995027983A1

公开(公告)日：1995-10-19

申请号：PCT/SE1995000366

申请日：1995-04-05

Applicant: ABB ATOM AB ,  BORRMAN, Bo ,  GREIS, Ingemar ,  LEGATH, Ernö

Inventor： ABB ATOM AB

IPC: G21C13/036

CPC classification number: F16L41/08 ,  G21C13/036 ,  G21Y2002/104 ,  G21Y2002/303 ,  G21Y2004/302 ,  Y02E30/40

Abstract: The present invention relates to a method and a device for introducing a medium, a primary flow (B), with a first temperature via an inlet pipe (9) into a container (2) which encloses the same medium with a second temperature, wherein the first and second temperatures differ considerably from each other. The invention comprises ensuring a thermal shield between the inlet pipe and that part of the container (10) which surrounds the inlet pipe, wherein the thermal shield consists of a secondary flow (C) which is adapted to flow in a secondary-flow gap (11) between the inlet pipe (9) and the container part (10). Te thermal shield is ensured by causing the primary flow (B) to pass through a throttle member (13) which is arranged in the inlet pipe (9) and has a limited extent in the longitudinal direction of the channel. The throttle member (13) comprises a chamber (14) which opens out downstream of the throttle member. Part of the primary flow (B) is supplied to the chamber (14) via a gap (16), and at least part of the secondary flow (C) is supplied to the chamber (14) via the secondary-flow gap (11), the primary flow (B) and the secondary flow (C) being mixed in the chamber (14). The flows are then caused, in mixed form, to join the main primary flow (B) flowing in the inlet pipe (9). To further ensure the thermal shield, a flow shield (19) is arranged around the inlet pipe (9) in the flow path of the medium (A) flowing in the container (2) for reduction of the velocity thereof at the inlet of the secondary-flow gap (11).

Abstract translation: 本发明涉及一种用于通过入口管（9）将具有第一温度的介质（B）的介质（B）引入容纳第二温度的相同介质的容器（2）中的方法和装置，其中 第一和第二温度彼此显着不同。 本发明包括确保入口管和围绕入口管的容器（10）的该部分之间的热屏蔽，其中该热屏蔽由二次流（C）组成，二次流（C）适于在二次流隙 11）在入口管（9）和容器部分（10）之间。 通过使主流（B）通过布置在入口管（9）中的节流构件（13）并且在通道的纵向方向上具有有限的程度来确保Te热屏蔽。 节流构件（13）包括在节流构件的下游开口的室（14）。 主流（B）的一部分经由间隙（16）供应到腔室（14），并且至少部分二次流（C）经由二次流动间隙（11）供应到腔室 ），主流（B）和二次流（C）在室（14）中混合。 然后以混合的形式将流体连接到在入口管（9）中流动的主要主流（B）。 为了进一步确保热屏蔽，在流入容器（2）的介质（A）的流动路径中，入口管（9）周围布置有流动屏蔽（19），用于降低其在入口管 二次流动间隙（11）。

公开(公告)号：WO1995026553A1

公开(公告)日：1995-10-05

申请号：PCT/SE1994000281

申请日：1994-03-29

Applicant: ABB ATOM AB

Inventor： ABB ATOM AB ,  ERIKSSON, Olle

IPC: G21C03/10

CPC classification number: G21C3/10 ,  G21Y2002/201 ,  G21Y2002/206 ,  G21Y2004/30 ,  Y02E30/40

Abstract: The invention relates to a sealing device (10) in a graphite-moderated light water-cooled nuclear reactor (1). The reactor (1) comprises a plurality of fuel channels (4) and each fuel channel (4) at its upper part encloses a plug (9). A gap (11) is provided between said fuel channel (4) and said plug (9) and sealing surfaces (12, 13) are arranged correspondingly on the inner part of the fuel channel (4) and the outer part of the plug (9), respectively. The sealing device (10) is arranged in the gap (11) between said sealing surfaces (12, 13) and is characterized in that it comprises one or more annular bodies arranged in the axial direction one after the other and making direct contact with each other. Each body is plastically deformable for transforming the force in the axial direction obtained via the plug (9) into a sealing pressure in the radial direction whereby it achieves a sealing effect of the sealing device (10). Further, the sealing device (10) is characterized in that at least that part of it, which faces the sealing surfaces (12, 13), is monolithic.

Abstract translation: 本发明涉及石墨缓和轻水冷核反应堆（1）中的密封装置（10）。 反应器（1）包括多个燃料通道（4），并且在其上部的每个燃料通道（4）包围塞子（9）。 在所述燃料通道（4）和所述插塞（9）之间设置间隙（11），密封表面（12,13）相应地设置在燃料通道（4）的内部和插头的外部 9）。 密封装置（10）布置在所述密封表面（12,13）之间的间隙（11）中，其特征在于，其包括一个或多个沿轴向方向一个接一个地布置的环形体，并与每个 其他。 每个主体是塑性变形的，用于将通过插头（9）获得的轴向力转换成径向的密封压力，从而实现密封装置（10）的密封效果。 此外，密封装置（10）的特征在于，面向密封表面（12,13）的至少其一部分是整体的。

公开(公告)号：WO1995018874A1

公开(公告)日：1995-07-13

申请号：PCT/SE1994001254

申请日：1994-12-27

Applicant: ABB ATOM AB ,  RUDLING, Peter

Inventor： ABB ATOM AB

IPC: C22C16/00

CPC classification number: G21C3/07 ,  C22C16/00 ,  G21C3/34 ,  G21Y2002/103 ,  G21Y2004/10 ,  Y02E30/40

Abstract: A zirconium alloy for nuclear fuel components such as cladding tubes, spacers, boxes, etc., with improved properties with respect to the absorption of hydrogen released during the corrosion, in combination with good strength and creep properties. The alloy contains zirconium and tin, iron, nickel, chromium, and silicon with a total content of at least 0.54 per cent by weight and at most 2.15 per cent by weight, of which the content of tin is at least 0.03 %, the content of iron at least 0.07 %, the content of nickel at least 0.03 %, the content of chromium at least 0.05 %, and the content of silicon at least 0.005 % and 0.15-0.30 % vanadium and 0.015-0.30 % niobium.

Abstract translation: 用于核燃料组分的锆合金，例如包层管，间隔件，盒等，其具有相对于在腐蚀期间释放的氢的吸收具有改进的性能，以及良好的强度和蠕变性能。 该合金含有锆和锡，铁，镍，铬和硅，其总含量为至少0.54重量％至多2.15重量％，其中锡的含量为至少0.03重量％，含量为 铁含量至少为0.07％，镍含量至少为0.03％，铬含量至少为0.05％，硅含量至少为0.005％，铌为0.15-0.30％，铌为0.015-0.30％。