公开(公告)号：US2993850A

公开(公告)日：1961-07-25

申请号：US3282448

申请日：1948-06-14

申请人： HARRY SOODAK ,  WIGNER EUGENE P

发明人： HARRY SOODAK ,  WIGNER EUGENE P

IPC分类号： G21C1/02 ,  G21C5/20 ,  G21C5/22 ,  G21C7/06 ,  G21C7/28 ,  G21C7/30 ,  G21C11/06

CPC分类号： G21C11/06 ,  G21C1/02 ,  G21C5/20 ,  G21C5/22 ,  G21C7/06 ,  G21C7/28 ,  G21C7/30 ,  Y02E30/34 ,  Y02E30/38 ,  Y02E30/39 ,  Y10S376/908

公开(公告)号：US2871176A

公开(公告)日：1959-01-27

申请号：US56921556

申请日：1956-03-02

申请人： DRALEY JOSEPH E ,  RUTHER WESTLY E

发明人： DRALEY JOSEPH E ,  RUTHER WESTLY E

IPC分类号： C22C21/00 ,  G21C3/06 ,  G21C7/06

CPC分类号： C22C21/00 ,  G21C3/06 ,  G21C7/06 ,  Y02E30/39 ,  Y10S376/90

公开(公告)号：US20230075832A1

公开(公告)日：2023-03-09

申请号：US17759332

申请日：2021-01-21

申请人： Battelle Energy Alliance, LLC

发明人： Yasir Arafat ,  Douglas C. Crawford ,  Timothy A. Hyde ,  Jess C. Gehin ,  James W. Sterbentz ,  Robert C. O'Brien

IPC分类号： G21D1/00 ,  G21C5/02 ,  G21D9/00 ,  G21C7/06

摘要： An energy production device may include a core and a heat exchanger positioned over the core. The core may include one or more fuel rods. The core may further include a heat transmission fluid configured to flow through natural convection upwards through the one or more fuel rods and collect heat therefrom. The core may also include a reaction control device including a neutron-absorbing material. The heat exchanger may be configured to receive the heat transmission fluid and transfer the heat to an energy harnessing device positioned on an opposite side of the heat exchanger from the core.

公开(公告)号：US10726958B2

公开(公告)日：2020-07-28

申请号：US15518920

申请日：2015-10-12

申请人： THOR ENERGY AS

发明人： Klara Insulander Björk ,  Øystein Asphjell

IPC分类号： G21C3/32 ,  G21C3/328 ,  G21C3/58 ,  G21C3/62 ,  G21C7/06 ,  G21C3/326 ,  G21C7/00 ,  G21C3/16 ,  G21C3/04

摘要： The present invention concerns a fuel assembly for a nuclear power boiling water reactor. The fuel assembly comprises fuel rods. At least 95% of the fuel rods comprise nuclear fuel material in the form of U enriched in 235U. At least 20% of the fuel rods belong to a first set of fuel rods. The fuel rods in this first set comprise both U enriched in 235U and Th. The first set comprises a first and a second subset of fuel rods. The ratio, with regard to weight, between Th and U, in each fuel rod of said first subset, is higher than the ratio, with regard to weight, between Th and U, in each fuel rod of said second subset. The invention also concerns a nuclear power boiling water reactor and a manner of operating such a reactor.

公开(公告)号：US10650930B2

公开(公告)日：2020-05-12

申请号：US15031865

申请日：2013-10-25

申请人： Shanghai Nuclear Engineering Research & Design Institute

发明人： Junqiang Lu ,  Chuntao Tang ,  Hui Li ,  Bo Yang ,  Jiwei Li ,  Qianxue Ding ,  Libing Zhu ,  Jiazheng Liu

IPC分类号： G21C7/103 ,  G21C7/06

摘要： A gray control rod having a neutron absorber comprising terbium and dysprosium is provided. The neutron absorber comprises at least one first component and at least one second component, the reactivity worth of the first component increases as the service time of the neutron absorber increases, the reactivity worth of the second component decreases as the service time of the neutron absorber increases; the reactivity worth of the neutron absorber varying no more than 15% within the service time of the neutron absorber. By using the first component and the second component to form the neutron absorber, and adjusting the proportion of the respective components in the neutron absorber, the neutron absorber having a substantially planar reactivity worth loss characteristic can be obtained. The gray control rod and the assembly having required reactivity controlling ability can be obtained by increasing or decreasing the material dosage of the neutron absorber.

公开(公告)号：US09914986B2

公开(公告)日：2018-03-13

申请号：US14348378

申请日：2012-09-28

申请人： AREVA NP

发明人： Dominique Hertz

IPC分类号： G21C3/06 ,  G21C7/10 ,  C21D1/72 ,  C21D6/00 ,  C21D9/08 ,  C21D9/14 ,  C23C8/02 ,  C23C8/32 ,  C23C8/80 ,  G21C21/18 ,  C23C8/22 ,  C23C8/38 ,  G21C7/06 ,  C21D8/10

CPC分类号： C21D1/72 ,  C21D6/004 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D9/14 ,  C23C8/02 ,  C23C8/22 ,  C23C8/32 ,  C23C8/38 ,  C23C8/80 ,  G21C7/06 ,  G21C7/10 ,  G21C21/18 ,  Y02E30/39

摘要： A method for producing a wear-resistant and corrosion-resistant stainless steel part for a nuclear reactor is provided. This method includes steps of providing a tubular blank in austenitic stainless steel whose carbon content is equal to or lower than 0.03% by weight; shaping the blank; finishing the blank to form the cladding; hardening the outer surface of the cladding by diffusing one or more atomic species; the blank, before the providing step or during the shaping or finishing step, being subjected to at least one hyper quenching with sub-steps of: heating the blank to a sufficient temperature and for a sufficient time to solubilize any precipitates present; quenching the blank at a rate allowing the austenitic structure to be maintained in a metastable state at ambient temperature and free of precipitates.

公开(公告)号：US09831004B2

公开(公告)日：2017-11-28

申请号：US12316446

申请日：2008-12-12

申请人： Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Nathan P. Myhrvold ,  Lowell L. Wood, Jr.

发明人： Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Nathan P. Myhrvold ,  Lowell L. Wood, Jr.

IPC分类号： G21C7/00 ,  G21D1/00 ,  G21C1/02 ,  G21C7/06

CPC分类号： G21D1/00 ,  G21C1/02 ,  G21C1/026 ,  G21C7/06 ,  Y02E30/34

摘要： Exemplary embodiments provide automated nuclear fission reactors and methods for their operation. Exemplary embodiments and aspects include, without limitation, re-use of nuclear fission fuel, alternate fuels and fuel geometries, modular fuel cores, fast fluid cooling, variable burn-up, programmable nuclear thermostats, fast flux irradiation, temperature-driven surface area/volume ratio neutron absorption, low coolant temperature cores, refueling, and the like.

公开(公告)号：US20150170768A1

公开(公告)日：2015-06-18

申请号：US14109461

申请日：2013-12-17

申请人： Global Nuclear Fuel - Americas, LLC

发明人： John P. Rea

IPC分类号： G21C7/06 ,  G21C7/24

CPC分类号： G21C7/06 ,  G21C3/326 ,  G21C5/02 ,  G21C7/24 ,  G21C11/022 ,  G21C11/024 ,  Y02E30/38

摘要： Nuclear fuel assemblies include at least one fluence control structure for use in a nuclear reactor core with other nuclear fuel assemblies. Such flux-limiting assemblies and structures may be positioned outside of or around the other nuclear fuel assemblies in the core so as to reduce neutron flux beyond the fluence controlled nuclear fuel assemblies, and fluence control structures may be positioned at an outside edge of the core. Fluence control structures limit neutron flux with non-fuel materials in structures like fuel rods and inserts, channels, shield curtains, etc. at particular positions in fuel assemblies. An engineer may select and/or install fluence-limiting fuel assemblies with flux-limiting characteristics in cores having neutronics profiles expected to benefit from such flux limitation.

摘要翻译： 核燃料组件包括至少一个用于具有其他核燃料组件的核反应堆堆芯的注量控制结构。 这种磁通限制组件和结构可以位于芯中的其他核燃料组件的外部或周围，以便减少超过注量控制的核燃料组件的中子通量，并且注量控制结构可以位于芯的外部边缘 。 流量控制结构在燃料组件中特定位置的燃料棒和插入件，通道，屏蔽窗等结构中限制了非燃料材料的中子通量。 工程师可以选择和/或安装具有通量限制特性的限流燃料组件，其核心具有预期受益于这种通量限制的中子特征。

公开(公告)号：US08811562B2

公开(公告)日：2014-08-19

申请号：US12722696

申请日：2010-03-12

申请人： Paul K. DeSantis

发明人： Paul K. DeSantis

IPC分类号： G21C7/06

CPC分类号： G21C7/14 ,  Y02E30/39

摘要： A control rod drive mechanism (CRDM) comprises a lead screw, a motor threadedly coupled with the lead screw to linearly drive the lead screw in an insertion direction or an opposite withdrawal direction, a latch assembly secured with the lead screw and configured to (i) latch to a connecting rod and to (ii) unlatch from the connecting rod, the connecting rod being free to move in the insertion direction when unlatched, and a release mechanism configured to selectively unlatch the latch assembly from the connecting rod.

摘要翻译： 控制棒驱动机构（CRDM）包括导螺杆，与导螺杆螺纹连接的马达，以沿插入方向或相反的撤出方向直线驱动导螺杆;闩锁组件，其与导螺杆固定并配置成（i ）闩锁到连杆并且（ii）从连接杆脱开，所述连杆在未锁定时自由地沿插入方向移动;以及释放机构，其构造成选择性地将闩锁组件从连接杆解锁。

公开(公告)号：US08526563B2

公开(公告)日：2013-09-03

申请号：US12862124

申请日：2010-08-24

申请人： Scott J. Shargots ,  Mathew W. Ales

发明人： Scott J. Shargots ,  Mathew W. Ales

IPC分类号： G21C7/06

CPC分类号： G21C7/117 ,  G21C7/12 ,  G21C9/02 ,  Y02E30/39

摘要： A nuclear reactor includes a pressure vessel, and a control rod assembly (CRA) including at least one movable control rod, a control rod drive mechanism (CRDM) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a connecting rod engaged with the CRDM and a terminal element connected with a lower end of the connecting rod and further connected with the at least one control rod. In some embodiments the terminal element includes a first portion comprising a first material having a first density and a second portion comprising a second material having a second density that is greater than the first density. In some embodiments the terminal element has a largest dimension parallel with the connecting rod that is greater than or equal to a largest dimension transverse to the connecting rod.

摘要翻译： 核反应堆包括压力容器和控制杆组件（CRA），控制杆组件（CRA）包括至少一个可移动控制杆，用于控制至少一个控制杆的运动的控制杆驱动机构（CRDM） 至少一个控制杆和CRDM。 联接器包括与CRDM接合的连杆和与连杆的下端连接并与至少一个控制杆连接的端子元件。 在一些实施例中，端子元件包括第一部分，其包括具有第一密度的第一材料，第二部分包括具有大于第一密度的第二密度的第二材料。 在一些实施例中，端子元件具有与连杆平行的最大尺寸，该尺寸大于或等于横向于连接杆的最大尺寸。