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1. 发明授权

US5035853A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US5035853A
公开(公告)日：1991-07-30
申请号：US313619
申请日：1989-02-21
申请人： Hans Lettau , Roland Rink
发明人： Hans Lettau , Roland Rink
IPC分类号： G21C3/34 , G21C3/356
CPC分类号： G21C3/3566 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： A nuclear reactor fuel assembly includes at least one uprightly disposed spacer having a grid of intersecting sheet-metal struts defining meshes therebetween. Mutually parallel rods are each disposed in a respective one of the meshes. Strip-like contact springs are parallel to the rods and each have a side facing toward and a side facing away from a respective one of the struts. Each of the contact springs are disposed in a respective one of the meshes and have two strip ends both being retained on the one strut. Each of the contact springs have a contact location being resilient relative to the one strut for contacting a rod. The contact location is spaced apart from both of the strip ends. Each of the contact springs has an undulatory transverse curve disposed at the contact location on the side of the contact spring facing toward the one strut. The contact springs are continuously smooth and flat from the contact location to the strip ends resting on the one strut.
摘要翻译：核反应堆燃料组件包括至少一个直立设置的间隔件，其具有在其间限定网格的交叉的金属板支柱的格栅。相互平行的杆各自设置在相应的一个网格中。条状接触弹簧平行于杆，并且每个都具有面向朝向背面和相对的一个支柱的一侧。每个接触弹簧设置在相应的一个网格中，并且两个带状端部都保持在一个支柱上。每个接触弹簧具有相对于一个支柱弹性的接触位置，用于接触杆。接触位置与两个带状端部间隔开。每个接触弹簧具有布置在接触弹簧侧面上的接触位置处的朝向一个支柱的波纹横向曲线。接触弹簧从接触位置到搁置在一个支柱上的条带端部连续平滑且平坦。

2. 发明授权

US5002725A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US5002725A
公开(公告)日：1991-03-26
申请号：US549634
申请日：1990-07-06
申请人： Hans Lettau , Gunther Lill , Hans-Joachim Lippert , Roland Rink
发明人： Hans Lettau , Gunther Lill , Hans-Joachim Lippert , Roland Rink
IPC分类号： G21C3/30 , G21C3/322 , G21C3/324 , G21C3/326 , G21C3/334
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/201 , G21Y2002/301 , G21Y2004/30 , G21Y2004/305 , Y02E30/38
摘要： A nuclear reactor fuel assembly includes an elongated fuel channel having opposite channel sides. Fuel rods containing nuclear fuel are mutually spaced apart in the fuel channel and parallel to the longitudinal direction of the fuel channel. A water tube inside the fuel channel has an outer surface and is parallel to the fuel rods. The water tube has a lower end with an inlet opening and an upper end with an outlet opening for liquid water. A longitudinal rib inside the fuel channel is secured to and interconnects two of the opposite channel sides and is spaced apart from the others of the channel sides. The longitudinal rib is longitudinally divided into two partial ribs each being secured to the outer surface of the water tube.
摘要翻译：核反应堆燃料组件包括具有相对通道侧的细长燃料通道。包含核燃料的燃料棒在燃料通道中相互间隔开并平行于燃料通道的纵向方向。燃料通道内的水管具有外表面并平行于燃料棒。水管具有下端，其具有入口开口，上端具有用于液体水的出口。燃料通道内部的纵向肋条被固定到相互通道两侧的两个并且互相连接，并且与通道侧的其它通道侧面间隔开。纵肋纵向分成两个部分肋条，每个肋条固定在水管的外表面上。

3. 发明授权

US4913876A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US4913876A
公开(公告)日：1990-04-03
申请号：US178130
申请日：1988-04-06
申请人： Hans Lettau , Gerhard Preusche , Guenther Lill
发明人： Hans Lettau , Gerhard Preusche , Guenther Lill
IPC分类号： G21C3/32 , G21C3/322
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/301 , G21Y2004/30 , G21Y2004/305 , Y02E30/38
摘要： A nuclear reactor fuel assembly includes an elongated fuel assembly box. Fuel rods containing nuclear fuel are mutually spaced apart in the fuel assembly box and parallel to the longitudinal direction of the fuel assembly box. A water tube inside the fuel assembly box is parallel to the fuel rods. The water tube has a lower end with an inlet opening and an upper end with an outlet opening for liquid water. A shield is fastened inside the water tube and spaced apart from both of the ends of the water tube. A flowthrough opening is formed in the shield or between the shield and the water tube for the liquid water.
摘要翻译：核反应堆燃料组件包括细长的燃料组件箱。包含核燃料的燃料棒在燃料组件箱中相互间隔开并且平行于燃料组件箱的纵向。燃料组件箱内的水管与燃料棒平行。水管具有下端，其具有入口开口，上端具有用于液体水的出口。屏蔽件固定在水管内部并与水管的两端间隔开。在屏蔽体或屏蔽体与液体水的水管之间形成流通开口。

4. 发明授权

US4781885A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US4781885A
公开(公告)日：1988-11-01
申请号：US926970
申请日：1986-11-04
申请人： Gunther Lill , Rolf Holzer , Hans Lettau
发明人： Gunther Lill , Rolf Holzer , Hans Lettau
IPC分类号： G21C15/02 , G21C3/30 , G21C3/32 , G21C3/322 , G21C3/326 , G21C15/06
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： A nuclear reactor fuel assembly includes an elongated fuel channel with a square cross section and channel walls, the fuel channel having an imaginary lattice disposed therein with a box-shaped cross section having mesh openings and sides parallel to the channel walls, fuel rods containing nuclear fuel being mutually spaced apart in the mesh openings, and a prismatic water pipe spaced apart from the fuel channel by a given spacing and having a cross section spanning more than one of the mesh openings of the imaginary lattice, the given spacing being completely filled with the mesh openings of the imaginary lattice and the fuel rods disposed therein.
摘要翻译：核反应堆燃料组件包括具有正方形横截面的细长燃料通道和通道壁，燃料通道具有设置在其中的虚拟格子，具有网状开口和平行于通道壁的侧面的箱形横截面，包含核的燃料棒燃料在网孔中彼此间隔开，而棱柱形水管与燃料通道间隔开给定的间距，并具有横跨多于虚拟网格的网眼之一的横截面，给定的间距完全被虚拟格子的网孔和布置在其中的燃料棒。

5. 发明授权

US5327471A Nuclear reactor fuel assembly with a supporting coolant tube 失效
标题翻译：核反应堆燃料组件带有支撑冷却剂管
公开(公告)号：US5327471A
公开(公告)日：1994-07-05
申请号：US924056
申请日：1992-08-28
申请人： Werner Meier , Hans-Joachim Lippert , Hans Lettau , Kurt Kraus
发明人： Werner Meier , Hans-Joachim Lippert , Hans Lettau , Kurt Kraus
IPC分类号： G21C3/30 , G21C3/32 , G21C3/322 , G21C3/33 , G21C3/34
CPC分类号： G21C3/32 , G21C3/322 , Y02E30/38
摘要： In order to obviate the use of supporting rods, an upper end piece of a coolant tube penetrates a fuel assembly head of a nuclear reactor fuel assembly and is supported on the fuel assembly head. A lower end piece of the coolant tube is fastened to and supported by a fuel assembly foot, in particular with rods of partial lengths. A supporting skeleton therefore includes the foot and the coolant tube with spacers. The fuel assembly head and a handle are placed on the skeleton and screwed onto the coolant tube after fuel rods are pushed into meshes of the spacer.
摘要翻译：为了避免使用支撑杆，冷却剂管的上端件穿过核反应堆燃料组件的燃料组件头并被支撑在燃料组件头上。冷却剂管的下端部件被紧固到燃料组件脚并由其支撑，特别是具有部分长度的杆。因此，支撑骨架包括脚和具有间隔件的冷却剂管。燃料组件头和把手被放置在骨架上并且在将燃料棒推入间隔件的网格之后拧到冷却剂管上。

6. 发明授权

US4735769A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US4735769A
公开(公告)日：1988-04-05
申请号：US888828
申请日：1986-07-22
申请人： Hans Lettau
发明人： Hans Lettau
IPC分类号： G21C3/34 , G21C3/348 , G21C3/356
CPC分类号： G21C3/348 , G21C3/3566 , G21Y2002/201 , G21Y2004/30 , G21Y2004/302 , Y02E30/40
摘要： A nuclear reactor fuel assembly for accommodating mutually parallel rods disposed side by side therein includes a spacer formed of two mutually parallel grid sections having sides, each of the grid sections including outer straps flatly facing the rods at which the grid sections are interconnected, each of the grid sections including main sleeves being positioned like positions of the same color in rows and columns disposed at right angles to each other on a chess board leaving a free intermediate position between each two occupied positions, the main sleeves dividing the grid sections into grid mesh openings at the positions each able to receive a respective rod therein, each main sleeve in one of the grid sections having edges and being aligned with a main sleeve in the other grid section forming pairs of main sleeves, connecting straps each interconnecting the main sleeves of a pair of main sleeves forming contact springs for rods, each of the connecting straps having a width being smaller than the circumference of one of the main sleeves, and spacer sleeves each being disposed between two of the main sleeves in one of the grid sections, each of the spacer sleeves including two spacer sleeve parts disposed at corresponding sides of the grid sections, and each of the spacer sleeve parts being disposed at a respective edge of two of the main sleeves.
摘要翻译：用于容纳彼此并排布置的相互平行的杆的核反应堆燃料组件包括由具有侧面的两个相互平行的栅格部分形成的间隔件，每个栅格部分包括平坦地面对栅格部分互连的杆的外带，包括主袖的网格部分被定位成相同颜色的行和列在棋盘上彼此成直角设置的相同位置，在每两个占用位置之间留下自由中间位置，主套筒将网格部分划分成格网在每个能够在其中容纳相应杆的位置处的开口，其中一个格栅部分中的每个主套筒具有边缘并与另一个格栅部分中的主套筒对准，形成成对的主套筒，每个连接带将每个相互连接的主套筒形成用于杆的接触弹簧的一对主套筒，每个连接带具有宽度小于其中一个主套筒的圆周和间隔套筒，每个间隔套筒设置在一个格栅部分中的两个主套筒之间，每个间隔套筒包括布置在网格部分的相应侧面的两个间隔套筒部件，每个间隔套筒部分设置在两个主套筒的相应边缘处。

7. 发明授权

US5793832A Nuclear reactor fuel assembly spacer 失效
标题翻译：核反应堆燃料组件垫片
公开(公告)号：US5793832A
公开(公告)日：1998-08-11
申请号：US814636
申请日：1997-03-10
申请人： Hans Lettau
发明人： Hans Lettau
IPC分类号： G21C3/34 , G21C3/356
CPC分类号： G21C3/3563 , G21Y2002/303 , G21Y2004/30 , Y02E30/40
摘要： A spacer for a nuclear reactor fuel assembly includes sheet metal webs which intersect one another on edge and form grid meshes. A leaf spring projects from a sheet metal web in a grid mesh and is assigned to a bearing boss for the force-locking holding of a rod in the grid mesh. The leaf spring is attached to the sheet metal web at a leaf edge extending in the longitudinal direction of the rod. In order to avoid fretting in a nuclear reactor, a perforation is formed in the leaf spring and has a contour that narrows toward the sheet metal web to which the leaf spring is attached.
摘要翻译：用于核反应堆燃料组件的间隔件包括在边缘彼此相交并形成网格的金属网。板簧从网格网中的金属板网突出，并被分配给轴承凸台，用于将栅棒保持在网格网中。板簧沿着杆的纵向方向延伸的叶缘连接到金属板上。为了避免在核反应堆中的微动，在板簧中形成穿孔，并且具有朝向板簧连接到的金属板的方向变窄的轮廓。

8. 发明授权

US4036685A Method and apparatus for detecting the leak of coolant into the jacket of a nuclear reactor fuel rod 失效
标题翻译：用于检测冷却剂泄漏到核反应堆燃料棒的护套中的方法和装置
公开(公告)号：US4036685A
公开(公告)日：1977-07-19
申请号：US275551
申请日：1972-07-27
申请人： Helmut Betzmeir , Hans Lettau
发明人： Helmut Betzmeir , Hans Lettau
IPC分类号： G01M3/04 , G21C17/04 , G21C17/07 , G21C3/16
CPC分类号： G21C17/07 , G01M3/042 , G21C17/04
摘要： A method and apparatus for detecting the leakage of coolant into the jacket of a nuclear reactor fuel rod. The apparatus includes a coolant absorbing means mounted at a predetermined location within the jacket. Upon leakage of coolant and absorption thereof pressure forces developed by the absorbing means locally deform the jacket. Periodic inspection of the jacket's exterior by gauges, optical instruments or the like, reveals the presence of such deformation thereby indicating the presence of coolant leakage.
摘要翻译：一种用于检测冷却剂泄漏到核反应堆燃料棒的护套中的方法和装置。该装置包括安装在护套内的预定位置处的冷却剂吸收装置。当冷却剂泄漏和吸收时，由吸收装置产生的压力使夹套局部变形。通过仪表，光学仪器等定期检查外套的外观，显示存在这种变形，从而指示冷却剂泄漏的存在。

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