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公开(公告)号：US20090175403A1
公开(公告)日：2009-07-09
申请号：US11672782
申请日：2007-02-08
Applicant: Toshiyuki Suzuki , Koji Matsumoto , Kenzo Koizumi , Yasushi Tsuboi
Inventor： Toshiyuki Suzuki , Koji Matsumoto , Kenzo Koizumi , Yasushi Tsuboi
Abstract: A fast reactor has a reactivity control assembly including a reactor shutdown rod of a backup reactor shutdown system and neutron absorbers to suppress the initial surplus reactivity, a reactor shutdown rod drive mechanism for releasing the reactor shutdown rod and units of neutron absorber drive mechanism capable of moving the respective neutron absorbers up and down. The reactor shutdown rod and the neutron absorbers are arranged in a wrapper tube. The reactor shutdown rod drive mechanism causes an inner extension tube to fall and release the reactor shutdown rod by means of a gripper section at the lowermost end of an outer extension tube by turning off the power supply to a holding magnet at the time of scram. Each of the units of neutron absorber drive mechanism has a dual tube type drive shaft including an outer extension shaft and an inner extension shaft. When grasping the neutron absorbers, the outer extension shaft is pulled up to allow both of the extension shafts to be inserted. After the outer extension tube gets to the handling head section of the neutron absorber, the outer extension shaft is pushed down to grasp the neutron absorber externally by means of the latch fingers of the gripper section thereof so that the neutron absorber can be moved up and down.
Abstract translation: 快速反应器具有反应性控制组件，其包括备用反应堆关闭系统的反应堆关闭棒和抑制初始剩余反应性的中子吸收器，用于释放反应堆关闭棒的反应堆关闭棒驱动机构和能够 将各自的中子吸收体上下移动。 反应器关闭棒和中子吸收器布置在包装管中。 反应堆关闭杆驱动机构通过在外部延伸管的最下端通过在卡拉姆时关闭到保持磁体的电力而使内部延伸管落下并且通过夹持部分释放反应堆关闭杆。 中子吸收器驱动机构的每个单元具有包括外延伸轴和内延伸轴的双管式驱动轴。 当抓住中子吸收器时，将外延伸轴向上拉以允许两个延伸轴插入。 在外延伸管到达中子吸收器的处理头部分之后，外延伸轴被向下推动，通过其夹持部分的闩锁指将外部的中子吸收器抓住，使得中子吸收器可以向上移动，并且 下。
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公开(公告)号：US20090034674A1
公开(公告)日：2009-02-05
申请号：US11830173
申请日：2007-07-30
Applicant: Joseph M. Burger , George P. Smith, JR.
Inventor： Joseph M. Burger , George P. Smith, JR.
IPC: G21C7/10
Abstract: A control rod for nuclear reactor having a lower section that contains an annular neutron absorber wrapped in a metal sleeve. The sleeve rests on a lower spacer which is seated on the control rod lower end cap. The upper portion of the sleeve extends above the annular neutron absorber of this lower section and is capped by an upper spacer. The standard neutron absorber is supported above this upper spacer which rests on the upper end of the metal sleeve to define a gap between the upper spacer and the annular neutron absorber to accommodate axial expansion.
Abstract translation: 一种用于核反应堆的控制棒，其具有包含环形中子吸收器的下部，该环形中子吸收器包裹在金属套筒中。 套筒位于控制杆下端盖上的下垫片上。 套筒的上部在该下部的环形中子吸收体的上方延伸，并被上部间隔物覆盖。 标准中子吸收器被支撑在该上间隔件上方，该上间隔件位于金属套筒的上端，以限定上间隔件和环形中子吸收体之间的间隙以适应轴向膨胀。
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公开(公告)号：US20070036260A1
公开(公告)日：2007-02-15
申请号：US11189472
申请日：2005-07-26
Applicant: Robert Fetterman , James Sparrow
Inventor： Robert Fetterman , James Sparrow
IPC: G21C7/06
CPC classification number: G21C7/10 , G21Y2002/104 , G21Y2002/201 , G21Y2002/206 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
Abstract: An advanced gray rod control assembly (GRCA) is for a nuclear reactor. The reactor has a plurality of fuel assemblies each including numerous elongated fuel rods supported in an organized array by substantially transverse support grids, and a plurality of guide thimbles disposed through the support grids and along the fuel rods. The GRCA includes a spider assembly structured to provide controlled insertion of gray rod assemblies within the thimbles of the fuel assembly, thereby controlling the rate of power produced by the reactor. Each gray rod assembly includes an elongated tubular member, a first end plug, a second end plug, a substantially pure silver neutron-absorber disposed within the tubular member, and a support tube surrounding the neutron-absorber within the tubular member to resist silver-swelling. Delta-power of the reactor is improved by minimizing the exposed surface area of the absorber and distributing it among all of the rods of the GRCA.
Abstract translation: 先进的灰棒控制组件（GRCA）用于核反应堆。 反应器具有多个燃料组件，每个燃料组件包括通过基本上横向的支撑网格以有组织的阵列支撑的许多细长的燃料棒，以及穿过支撑格栅并沿着燃料棒设置的多个导向套管。 GRCA包括构造成在燃料组件的套管内提供控制插入灰棒组件的蜘蛛组件，从而控制由反应器产生的功率速率。 每个灰色杆组件包括细长的管状构件，第一端塞，第二端塞，设置在管状构件内的基本上纯的中子吸收器，以及围绕管状构件内的中子吸收体的支撑管， 肿胀。 通过最小化吸收器的暴露表面积并将其分布在GRCA的所有棒中来改善反应器的三角形功率。
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公开(公告)号：US20050135547A1
公开(公告)日：2005-06-23
申请号：US10832573
申请日：2004-04-26
Applicant: Wolfgang Schulz
Inventor： Wolfgang Schulz
Abstract: A control element for a nuclear reactor includes an absorber or absorber material and at least three absorber enclosures for receiving the absorber. The absorber enclosure is constructed in such a way that the received absorber can be subjected to local relative burn up of more than 90% without the burnt-off absorber material getting into the reactor coolant. The control element is constructed in such a way that there are at least three absorber enclosures and a predetermined spacing between the enclosures, so that each absorber enclosure forms a mechanical resistance for the absorber and is removable from the starting position in the event of expansion of the absorber.
Abstract translation: 用于核反应堆的控制元件包括吸收器或吸收器材料和用于接收吸收器的至少三个吸收器外壳。 吸收器外壳被构造成使得接收的吸收器可以经受大于90％的局部相对燃尽，而没有烧焦吸收体材料进入反应堆冷却剂。 控制元件构造成使得至少有三个吸收器外壳和外壳之间的预定间隔，使得每个吸收器外壳形成用于吸收器的机械阻力，并且在膨胀的情况下可从起始位置移除 吸收器。
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公开(公告)号：US20020106049A1
公开(公告)日：2002-08-08
申请号：US09765135
申请日：2001-01-18
Inventor： Wolfgang Schulz
IPC: G21C003/32
Abstract: A control element for a nuclear reactor includes an absorber and at least three absorber enclosures for receiving the absorber. The absorber enclosure is constructed in such a way that the received absorber can be subjected to local relative burn up of more than 90% without the burnt-off absorber material getting into the reactor coolant. The control element is constructed in such a way that there are at least three absorber enclosures and a predetermined spacing between the enclosures, so that each absorber enclosure forms a mechanical resistance for the absorber and is removable from the starting position in the event of expansion of the absorber.
Abstract translation: 用于核反应堆的控制元件包括吸收器和用于接收吸收器的至少三个吸收器外壳。 吸收器外壳被构造成使得接收的吸收器可以经受大于90％的局部相对燃尽，而没有烧焦吸收体材料进入反应堆冷却剂。 控制元件构造成使得至少有三个吸收器外壳和外壳之间的预定间隔，使得每个吸收器外壳形成用于吸收器的机械阻力，并且在膨胀的情况下可从起始位置移除 吸收器。
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Patent Agency Ranking
公开(公告)号：US5784426A
公开(公告)日：1998-07-21
申请号：US801710
申请日：1997-02-14
Applicant: James Edgar Burner , Benedict Kazirskis
Inventor： James Edgar Burner , Benedict Kazirskis
CPC classification number: G21C19/02 , G21C19/207 , G21C7/10 , G21Y2002/202 , G21Y2002/302 , G21Y2004/30 , G21Y2004/50 , Y02E30/39
Abstract: A bottom open sled system for exchanging control rod drives in a nuclear reactor is described. The system, in one form, includes a tower forming a control rod drive receiving area, at least one acme screw extends substantially the length of the tower and is mounted within the receiving area. An elevator is coupled to the acme screw and is movable relative to the acme screw. The elevator is configured to engage a portion of the control rod drive and to substantially support the control rod drive. The system further includes a trunnion cart engaged to the tower so that the tower is rotatable relative thereto.
Abstract translation: 描述了用于在核反应堆中交换控制棒驱动器的底部开放式滑轨系统。 一种形式的系统包括形成控制棒驱动器接收区域的塔架，至少一个尖头螺钉基本上延伸至塔架的长度并安装在接收区域内。 升降机联接到旋钮螺杆上并且相对于旋钮螺钉可移动。 升降机构造成接合控制杆驱动器的一部分并且基本上支撑控制杆驱动器。 该系统还包括接合到塔架的耳轴车，使得塔架可相对于其旋转。
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公开(公告)号：US5363421A
公开(公告)日：1994-11-08
申请号：US091696
申请日：1993-07-13
Applicant: Franklin D. Obermeyer
Inventor： Franklin D. Obermeyer
CPC classification number: G21C7/10 , G21Y2002/207 , G21Y2002/303 , G21Y2004/302 , Y02E30/39
Abstract: Control rod guide tube adapted to reduce vibration of a plurality of control rods disposed therein. The guide tube comprises an elongate housing surrounding the control rods, the housing having an opening at an end thereof for receiving a flowing fluid therethrough. The fluid has a velocity component acting transversely to the control rods sufficient to induce vibration of the control rods. However, the housing of the present invention has an intermediate portion pierced by a plurality of apertures for exit of the fluid from the housing to reduce the velocity of the fluid acting transversely to the control rods in order to reduce vibration of the control rods. As control rod vibration is reduced, control rod wear is mitigated.
Abstract translation: 控制杆引导管适于减少设置在其中的多个控制棒的振动。 引导管包括围绕控制杆的细长壳体，壳体在其端部具有用于接收流过的流体的开口。 流体具有横向于控制杆作用的速度分量，足以引起控制棒的振动。 然而，本发明的壳体具有穿过多个孔的中间部分，用于从壳体排出流体，以减小横向于控制杆的流体的速度，以减少控制棒的振动。 随着控制杆振动的减小，控制杆磨损得到缓解。
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公开(公告)号：US4938918A
公开(公告)日：1990-07-03
申请号：US405597
申请日：1989-09-11
Applicant: Albert Weiss
Inventor： Albert Weiss
CPC classification number: G21C3/06 , G21C7/10 , G21Y2002/104 , G21Y2004/201 , G21Y2004/40 , Y02E30/39 , Y10T29/49805 , Y10T29/49925 , Y10T29/49929
Abstract: The zirconium cladding of a coolant-displacement rod of a nuclear reactor is precollapsed in the zirconium oxide stack of pellets which supports the cladding. Current is conducted through the cladding in an atmosphere at reduced pressure containing residual oxygen, to heat the cladding to a temperature at which its yield strength is reduced. Then, while the rod remains at this temperature, it is subjected to isostatic pressure which collapses the cladding uniformly. The formation, by reason of exposure to neutron flux, of a long unsupported gap in the cladding which might be collapsed under the pressure of the coolant is precluded. In addition, the rod retains its symmetry. The outer surface of the cladding is oxidized, facilitating the movement of the rod into its thimbles of the core and improving the resistances of the cladding to reaction with the coolant.
Abstract translation: 核反应堆的冷却剂置换杆的锆包层在支撑包层的颗粒的氧化锆堆中被预先挤压。 电流在包含残留氧的减压气氛中通过包层传导，以将包层加热到其屈服强度降低的温度。 然后，当杆保持在该温度下时，其受到均匀压缩包层的等静压力。 由于暴露于中子通量，由于在冷却剂的压力下可能被折叠的包层中长的未支撑的间隙的形成被排除。 此外，杆保持其对称性。 包层的外表面被氧化，有利于杆移动到芯的套管中，并且改善包层与冷却剂反应的电阻。
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公开(公告)号：US4762661A
公开(公告)日：1988-08-09
申请号：US721350
申请日：1985-04-09
Applicant: Joseph Leclercq , Jean N. Canat
Inventor： Joseph Leclercq , Jean N. Canat
CPC classification number: G21C7/10 , G21C7/117 , G21Y2002/201 , G21Y2004/30 , Y02E30/39
Abstract: A nuclear fuel assembly for a spectral shift reactor has an upper end piece and a lower end piece secured to a structural element belonging to the upper end piece by guide tubes arranged for receiving a cluster of control elements. The upper end piece further comprises a support member arranged for receiving said cluster at the end of the fall thereof, means for guiding said support member. The support member is guided for movement parallel to the axis of the guide tubes. Springs are contained within the end piece and disposed between the structural member and the plate for braking the cluster at the end of the fall thereof.
Abstract translation: 用于光谱变换反应器的核燃料组件具有通过布置用于接收一组控制元件的导管固定到属于上端部件的结构元件的上端件和下端件。 上端部件还包括布置成用于在其坠落的末端处接收所述簇的支撑构件，用于引导所述支撑构件的装置。 引导支撑构件平行于导管的轴线移动。 弹簧容纳在端件内并且设置在结构构件和板之间，用于在其坠落结束时制动簇。
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70.发明授权
公开(公告)号：US4728487A
公开(公告)日：1988-03-01
申请号：US718902
申请日：1985-04-01
Applicant: Barry F. Cooney , Thomas M. Camden, Jr.
Inventor： Barry F. Cooney , Thomas M. Camden, Jr.
CPC classification number: G21C7/117 , G21C7/10 , G21Y2002/201 , G21Y2002/304 , G21Y2004/10 , G21Y2004/30 , Y02E30/39
Abstract: A cluster of standardized reduced length burnable absorber rods include a plurality of middle rod sections having a multiplicity of different axial lengths and containing burnable absorber material in sealed chambers therein, a plurality of upper end spacer sections having a multiplicity of different axial lengths and each defining an empty space, and a plurality of lower end spacer sections having a multiplicity of different axial lengths and each defining an empty space. Each of the rods is formed of one middle rod section tandemly arranged between and interconnecting one upper end spacer section and one lower end spacer section. The three interconnected sections which form each rod being selected so as to provide the same standard combined axial length for each of the rods in the cluster thereof although the axial lengths of the middle rod sections can vary from rod to rod and thereby the axial location of the burnable absorber material along the rod can also vary from rod to rod.
Abstract translation: 一组标准化的减小长度的可燃吸收棒包括多个具有多个不同轴向长度并且在其中的密封室中包含可燃吸收材料的中间杆段，多个上端间隔部分具有许多不同的轴向长度， 空的空间，以及具有多个不同的轴向长度并且各自限定空的空间的多个下端间隔部分。 每个杆由一个串联布置在一个上端隔离部分和一个下端间隔部分之间并互相连接的中间杆段形成。 选择形成每个杆的三个相互连接的部分，以便为其中的每个杆提供相同的标准组合轴向长度，尽管中间杆部分的轴向长度可以随杆到杆的轴向位置而变化， 沿着杆的可燃性吸收材料也可以随杆而变化。
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