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41. 发明授权

US06347130B1 Fuel assembly with short fuel units 失效
标题翻译：具有短燃料单元的燃料组件
公开(公告)号：US06347130B1
公开(公告)日：2002-02-12
申请号：US08666372
申请日：1996-06-27
申请人： Olov Nylund
发明人： Olov Nylund
IPC分类号： G21C330
CPC分类号： G21C3/326 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , G21Y2004/60 , Y02E30/31 , Y02E30/38
摘要： A fuel assembly for a boiling water reactor comprising a plurality of fuel units, stacked on top of each other, each of which comprising a plurality of fuel rods extending vertically between a top tie plate and a bottom tie plate, and means for keeping the fuel elements together. The fuel elements are surrounded by a fuel channel with a substantially square cross section. At least two of the fuel units differ from each other in regard to fuel distribution or free flow area.
摘要翻译：一种用于沸水反应器的燃料组件，包括堆叠在彼此顶部的多个燃料单元，每个燃料单元包括在顶部连接板和底部连接板之间垂直延伸的多个燃料棒，以及用于保持燃料的装置元素在一起。燃料元件被具有基本正方形横截面的燃料通道围绕。在燃料分配或自由流动面积方面，至少两个燃料单元彼此不同。

42. 发明授权

US5949839A Fuel assembly for a boiling water reactor 失效
标题翻译：用于沸水反应堆的燃料组件
公开(公告)号：US5949839A
公开(公告)日：1999-09-07
申请号：US981640
申请日：1998-04-09
申请人： Olov Nylund
发明人： Olov Nylund
IPC分类号： G21C3/16 , G21C3/17 , G21C3/30 , G21C3/32 , G21C3/322 , G21C3/33 , G21C3/334
CPC分类号： G21C3/17 , G21C3/322 , G21Y2002/201 , G21Y2002/207 , G21Y2002/303 , G21Y2004/30 , Y02E30/31 , Y02E30/38
摘要： A fuel assembly for a boiling water reactor where the fuel assembly during operation is arranged vertically in the core of the reactor. The fuel assembly comprises a plurality of vertical fuel rods (22) arranged in one or more fuel bundles, wherein at least the majority of the fuel rods comprise a stack of fuel pellets (7) surrounded by a cladding tube (8b) and a plenum tube (23) which is connected to the upper part of the cladding tube (8b), the plenum tube having a cross-section area which is smaller than the cross-section area of the cladding tube. Further, the fuel assembly comprises a bottom tie plate (15) which retains and supports the lower part of the fuel bundle, a number of spacers (13) which retain and position the fuel rods in spaced relationship and are arranged axially separated along the fuel rods, a top spacer (21) which retains and supports the upper part of the fuel bundle and is arranged above and at a distance from the stacks of fuel pellets, and a fuel channel (2) which surrounds the fuel bundle or the fuel bundles.
摘要翻译： PCT No.PCT / SE96 / 00736 Sec。 371日期：1998年4月9日 102（e）1998年4月9日PCT PCT 1996年6月4日PCT公布。公开号WO97 / 03447 日期1997年1月30日用于沸水反应器的燃料组件，其中操作期间的燃料组件垂直布置在反应堆的核心中。燃料组件包括布置在一个或多个燃料束中的多个垂直燃料棒（22），其中至少大部分燃料棒包括由包层管（8b）和增压室管（23），其与所述包层管（8b）的上部连接，所述集气管的截面积小于所述包层管的截面积。此外，燃料组件包括保持和支撑燃料束的下部的底部连接板（15），多个间隔件（13），其间隔开地保持和定位燃料棒，并沿燃料轴向分离杆，顶部间隔件（21），其保持和支撑燃料束的上部，并且布置在燃料粒子堆叠的上方和一定距离处;以及燃料通道（2），其围绕燃料束或燃料束。

43. 发明授权

US5249210A Method and a device for control of the coolant flow in the fuel assembly of a pressurized water reactor 失效
标题翻译：用于控制加压水反应堆的燃料组件中的冷却剂流动的方法和装置
公开(公告)号：US5249210A
公开(公告)日：1993-09-28
申请号：US774900
申请日：1991-10-11
申请人： Olov Nylund , Bertil Scholin
发明人： Olov Nylund , Bertil Scholin
IPC分类号： G21C3/322 , G21C3/34
CPC分类号： G21C3/322 , G21C3/34 , Y02E30/32 , Y02E30/38
摘要： A method and a device for controlling the coolant flow to the fuel rods (1) in the fuel assembly of a pressurized-water reactor, fuel assembly including an elongated bundle of control rod guide tubes and fuel rods (1) which is arranged between a top nozzle and a bottom nozzle. The bundle is retained by spacers (2) supported by the control rod guide tubes and the top and bottom nozzles are provided with a plurality of openings for the coolant flow. According to the invention, the coolant flow along the fuel rods (1) of a fuel assembly which is under low load is reduced by the insertion of special, or the activation of existing, throttle or guide members (10,11,12,13,16) on the spacers (2) or on the fuel rods (1) between the spacers (2) such that the coolant flow is diverted to one or more adjacent fuel assemblies.
摘要翻译：一种用于控制冷却剂流到加压水反应堆的燃料组件中的燃料棒（1）的方法和装置，所述燃料组件包括细长的控制杆导管和燃料棒（1），燃料组件布置在顶部喷嘴和底部喷嘴。束被由控制杆导管支撑的间隔物（2）保持，并且顶部和底部喷嘴设置有用于冷却剂流动的多个开口。根据本发明，沿着燃料组件的低负荷的燃料棒（1）的冷却剂流通过插入特殊的或启动现有的节流阀或引导构件（10,11,12,13 ，16）在间隔件（2）上或间隔件（2）之间的燃料棒（1）上，使得冷却剂流被转移到一个或多个相邻的燃料组件。

44. 发明授权

US5230861A Fuel assembly for a light-water nuclear reactor 失效
标题翻译：燃料组件用于轻水核反应堆
公开(公告)号：US5230861A
公开(公告)日：1993-07-27
申请号：US817491
申请日：1992-01-07
申请人： Olov Nylund
发明人： Olov Nylund
IPC分类号： G21C3/30 , G21C3/32 , G21C3/33
CPC分类号： G21C3/3305 , G21C3/3206 , G21C3/331 , G21C3/3315 , Y02E30/40
摘要： A fuel assembly for a light-water nuclear reactor includes a plurality of vertical fuel rods (10, 42) which are arranged, in spaced relationship in a lateral direction, between a bottom tie plate (11, 44) and a top tie plate (12, 43), the bottom tie plate, defining through-going vertical channels (50) for conducting water through the bottom tie plate and into the spaces between the fuel rods. The bottom tie plate also defines horizontal channels (51, 52) which cross the vertical channels and which are preferably arranged, at edges (54) on the bottom tie plate, in open communication with the spaces between the fuel rods. Helical springs (61, 62) with horizontal symmetry axis are arranged in at least some of the horizontal channels where the horizontal channels cross the vertical channel so as to trap debris in the water passing upwardly through the through-going vertical channels.
摘要翻译：一种用于轻水核反应堆的燃料组件包括多个垂直燃料棒（10,42），它们在横向方向上以间隔开的方式布置在底板（11,44）和顶部连接板底部连接板，限定穿过垂直通道（50），用于将水引导通过底部连接板并进入燃料棒之间的空间。底部连接板还限定横向垂直通道的水平通道（51,52），其优选地布置在底部连接板上的边缘（54）处，与燃料棒之间的空间开放连通。具有水平对称轴的螺旋弹簧（61,62）布置在水平通道中的至少一些水平通道中，其中水平通道横穿垂直通道，以便将水中的碎屑捕获通过向上穿过垂直通道的水。

45. 发明授权

US5180550A Fuel assembly for nuclear reactor 失效
公开(公告)号：US5180550A
公开(公告)日：1993-01-19
申请号：US700807
申请日：1991-05-16
申请人： Olov Nylund
发明人： Olov Nylund
IPC分类号： G21C3/332 , G21C3/334
CPC分类号： G21C3/334 , G21C3/332 , G21Y2002/302 , G21Y2002/40 , G21Y2004/301 , G21Y2004/50 , Y02E30/40
摘要： A fuel assembly for a nuclear reactor is provided with a number of parallel fuel rods, which are retained by means of spacers (2), and guide tubes (3) between the fuel rods. The guide tubes (3) are also attached to the spacers (2) as well as to a top nozzle and a bottom nozzle (4, 5). The guide tubes (3) are provided, at least at the spacers (2), with external threads (7) for improved fixing to the spacers.

46. 发明授权

US5089220A Fuel assembly for a boiling reactor 失效
标题翻译：燃料组件用于锅炉反应器
公开(公告)号：US5089220A
公开(公告)日：1992-02-18
申请号：US606454
申请日：1990-10-31
申请人： Olov Nylund
发明人： 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： The invention relates to a fuel assembly in the form of an elongated channel having several corners. The channel is connected to a coolant intended to flow through the channel. A bundle of similarly elongated fuel rods, retained by a plurality of spacers (8), is arranged in the channel. The spacer (8) has an outer frame which is provided all around with a plurality of windows (10). According to the invention, deflection fins (9) are placed in said window and are so directed that cooling water flowing along the wall of the fuel assembly is diverted in a direction towards the center of the channel to improve the cooling for those fuel rods which are located in this region.

47. 发明授权

US5080858A Fuel assembly for a boiling reactor 失效
公开(公告)号：US5080858A
公开(公告)日：1992-01-14
申请号：US606456
申请日：1990-10-31
申请人： Olov Nylund
发明人： Olov Nylund
IPC分类号： G21C3/34 , G21C3/322 , G21C3/32
CPC分类号： G21C3/322 , G21Y2002/202 , G21Y2002/302 , G21Y2004/30 , G21Y2004/302 , Y02E30/38
摘要： The invention relates to a fuel assembly in the form of an elongated channel having several corners. The channel is connected to a coolant intended to flow through the channel. A bundle of similarly elongated fuel rods, retained by a plurality of spacers (8), is arranged in the channel. The spacer (8) comprises a number of cells surrounded by an outer frame which is formed from a band placed on edge. According to the invention, the band is extended on the upstream side of the spacer (8) by a skirt (12), in which openings (13) are provided. In certain of these openings deflection fins (14) have been arranged in order to deflect coolant, flowing along the assembly wall (6), in a direction towards the center of the respective spacer (8).

48. 发明授权

US4526744A Fuel assembly for a boiling water reactor 失效
标题翻译：用于沸水反应堆的燃料组件
公开(公告)号：US4526744A
公开(公告)日：1985-07-02
申请号：US372765
申请日：1982-04-28
申请人： Bo Borrman , Lars Leine , Olov Nylund , Bengt Ode
发明人： Bo Borrman , Lars Leine , Olov Nylund , Bengt Ode
IPC分类号： G21C3/30 , G21C3/32 , G21C3/334 , G21C3/34
CPC分类号： G21C3/32 , G21Y2004/30 , G21Y2004/40 , Y02E30/40
摘要： A fuel assembly for a boiling water reactor comprises a plurality of fuel rods (2, 2'), which constitute four partial bundles and are surrounded by a fuel channel system (1) comprising one partial tube for each partial bundle. Each of the four partial bundles rests on a bottom tie plate (19) and is positioned with respect to the others by means of a common top tie plate (31), which is provided with a lifting loop (33) which is sufficiently strong to be able to lift the four partial bundles simultaneously, a major part of the lifting force being transmitted to said bottom tie plates via a plurality of supporting fuel rods (2').
摘要翻译：一种用于沸水反应器的燃料组件包括多个燃料棒（2,2'），它们构成四个部分束并由包括用于每个部分束的一个分管的燃料通道系统（1）围绕。四个部分束中的每一个都位于底部平板（19）上，并且通过公共顶部连接板（31）相对于其它部分定位，其具有提升回路（33），该提升回路（33）足够坚固能够同时提升四个部分束，大部分提升力通过多个支撑燃料棒（2'）传递到所述底部连接板。

49. 发明授权

US4489038A Fuel assembly for a nuclear reactor 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US4489038A
公开(公告)日：1984-12-18
申请号：US341978
申请日：1982-01-22
申请人： Olov Nylund
发明人： Olov Nylund
IPC分类号： G21C3/30 , G21C3/332 , G21C3/34 , G21C3/344
CPC分类号： G21C3/332 , Y02E30/40
摘要： A nuclear reactor fuel assembly for a nuclear reactor comprises a housing with a wall and spacer means removably located within the housing, the spacer means comprising a plurality of spacer cells each adapted to receive an elongated fuel rod for the purpose of locating a bundle of such fuel rods in spaced-apart relationship within the housing. A portion of the housing which confronts the spacer means is provided at least at one location with a first locking means, and one of the spacer cells is provided with a second locking means movable between active and inactive positions. This second locking means is prevented from moving past the first locking means in the direction of elongation of the fuel rods when the second locking means is in its active position but is able to move past the first locking means when in its inactive position. The second locking means is moved from its inactive position to its active position by the insertion of a fuel rod into said one spacer cell.
摘要翻译：用于核反应堆的核反应堆燃料组件包括具有可拆卸地位于壳体内的壁和间隔件的壳体，间隔件装置包括多个隔离器单元，每个间隔件适于容纳细长的燃料棒，用于定位这样的一束在壳体内间隔开的燃料棒。至少在一个位置处设有与间隔装置相对的壳体的一部分，并具有第一锁定装置，并且间隔电池中的一个设置有可在主动位置和非活动位置之间移动的第二锁定装置。当第二锁定装置处于其主动位置时，当第二锁定装置处于其非活动位置时能够移动经过第一锁定装置，防止第二锁定装置沿着燃料棒延伸的方向移动经过第一锁定装置。第二锁定装置通过将燃料棒插入所述一个间隔器单元中而从其非活动位置移动到其有效位置。

50. 发明授权

US4400347A Absorber member for mounting in the lattice of a boiling water reactor 失效
标题翻译：用于安装在沸水反应堆的格子中的吸收件
公开(公告)号：US4400347A
公开(公告)日：1983-08-23
申请号：US258821
申请日：1981-04-29
申请人： Bo Fredin , Olov Nylund
发明人： Bo Fredin , Olov Nylund
IPC分类号： G21C7/06 , G21C7/04 , G21C7/113 , G21C7/10
CPC分类号： G21C7/113 , G21Y2002/201 , Y02E30/31 , Y02E30/39
摘要： An elongated absorber plate, which is stationarily mounted in a gap between two fuel assemblies in a reactor core, comprises a plurality of absorber channels which are filled with a burnable absorber material. The channels (5b) are formed by welding to each other two confronting sheet elements (2b, 3b), of which at least one is corrugated.
摘要翻译：固定地安装在反应堆芯中的两个燃料组件之间的间隙中的细长的吸收板包括填充有可燃吸收材料的多个吸收通道。通道（5b）通过彼此焊接形成两个相对的片元件（2b，3b），其中至少一个是波纹状的。

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