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31. 发明授权

US10163530B2 Nuclear reactor with screw-nut drive of core reactivity control members 有权
公开(公告)号：US10163530B2
公开(公告)日：2018-12-25
申请号：US15748182
申请日：2016-07-28
申请人： Société Technique pour l'Energie Atomique
发明人： Lionel Ranc , Charles Dumanois , Jean-Luc Rouiller
IPC分类号： H04B1/38 , G21C7/14 , G21C1/32 , G21C7/12 , G21C9/02 , G21C7/113 , G21C15/02
摘要： A nuclear reactor includes a plurality of mechanisms (11) that drive the contact members (9) that control the reactivity, of the core. Each mechanism includes a driving member (21) including a driving part (23) forming one out of a screw or a nut, a member (27) for applying a rotary torque of the rotor (19) to the driving member (21), a driven member (29) translationally connected to one of the control members (9) and including the other out of screw and a nut; and a member (33) that is selectively mobile between a position of blocking the driving member (21) and a position of releasing the driving member (21). In each drive mechanism (11), the motor (15) is fully immersed in the primary coolant inside the vessel (3); the rotor (19) has a central passage (35), the member for applying the rotary torque (27) being situated in or near the central passage (35); the driving member (21) includes a connecting part (37) engaged in the central passage (35) and collaborating with the member for applying the rotary torque (27), the connecting part (37) being free to effect a translational movement inside the central passage (35) with respect to the rotor (19) when the or each blocking member (33) is in the releasing position.

32. 发明授权

US06934350B1 Core configuration for a nuclear reactor 失效
标题翻译：核反应堆的核心配置
公开(公告)号：US06934350B1
公开(公告)日：2005-08-23
申请号：US09597113
申请日：2000-06-20
申请人： Roy C. Challberg , Larry E. Fennern , Russell M. Fawcett
发明人： Roy C. Challberg , Larry E. Fennern , Russell M. Fawcett
IPC分类号： G21C5/06 , G21C7/113 , G21C5/00
CPC分类号： G21C5/06 , G21C7/113 , G21Y2002/301 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
摘要： In an embodiment of the present invention, the core of a nuclear reactor includes a plurality of fuel cells and a plurality of large control rods. Each large control rod is about two times the width of a conventional control rod and includes four control rod blades extending radially from a central portion and arranged at right angles to each other. The blades define four fuel bundle receiving channels. The core is configured so that the control rods are-arranged in a plurality of staggered rows with four fuel bundles in each receiving channel.
摘要翻译：在本发明的一个实施例中，核反应堆的核心包括多个燃料电池和多个大的控制棒。每个大的控制杆是常规控制杆的宽度的两倍，并且包括从中心部分径向延伸并彼此成直角布置的四个控制杆叶片。叶片限定四个燃料束接收通道。芯部构造成使得控制棒以每个接收通道中的四个燃料束布置成多个交错排。

33. 发明授权

US06925138B2 Reactor core and method for operating nuclear reactor 失效
标题翻译：反应堆核心和运行核反应堆的方法
公开(公告)号：US06925138B2
公开(公告)日：2005-08-02
申请号：US09978308
申请日：2001-10-17
申请人： Mikihide Nakamaru , Hideaki Heki , Takehiko Saito , Kouji Hiraiwa , Tadashi Narabayashi , Satoru Oomizu , Tsuyoshi Shimoda , Kenji Arai , Shinichi Morooka , Seijiro Suzuki
发明人： Mikihide Nakamaru , Hideaki Heki , Takehiko Saito , Kouji Hiraiwa , Tadashi Narabayashi , Satoru Oomizu , Tsuyoshi Shimoda , Kenji Arai , Shinichi Morooka , Seijiro Suzuki
IPC分类号： G21C1/08 , G21C3/328 , G21C5/00 , G21C7/04 , G21C7/113 , G21C7/14 , G21C7/24 , G21C7/27 , G21C1/04
CPC分类号： G21C5/00 , G21C1/084 , G21C7/04 , G21C7/113 , G21Y2002/201 , G21Y2002/304 , G21Y2002/40 , G21Y2004/30 , Y02E30/31 , Y02E30/39
摘要： The present invention is to provide a reactor core that allows a nuclear plant to continuously operate for a long term period, for example 15 years or longer, without requiring any fuel exchange, reduces the duration and number of maintenance steps involved in regular plant inspections, markedly improves plant availability and economic efficiency, and is effective in terms of nuclear nonproliferation.A plurality of fuel assemblies 103, themselves obtained by arranging fuel rods 100 and water rods 107 in square lattices, are arranged in a square lattice at a certain pitch. The blades 102a of a cross-shaped (cruciform) control rod 102 in a cross section are inserted into four adjacent spaces formed by four fuel assemblies 100 facing each other. A value of 0.06 cm−1 or greater is selected for the ratio (B/S) of the width (B) of each blade on the cruciform control rod 102 and the surface (S) of the fuel lattice defined by the surface area of a square whose side is equal to the pitch between the fuel assemblies 103.
摘要翻译：本发明提供一种反应堆堆芯，其允许核电厂连续运行长达15年或更长的时间，而不需要任何燃料更换，减少常规工厂检查所涉及的维护步骤的持续时间和数量，显着提高了植物的可利用性和经济效益，在核不扩散方面有效。通过将燃料棒100和水杆107排列成方形格子而获得的多个燃料组件103以一定的间距排列成方格。十字形（十字形）控制杆102的横截面的叶片102a插入由彼此面对的四个燃料组件100形成的四个相邻的空间中。对于十字形控制杆102上的每个叶片的宽度（B）和燃料表面（S）的比（B / S），选择0.06cm -1以上的值其方格由侧面等于燃料组件103之间的间距的正方形的面积限定。

34. 发明授权

US6137854A Reactor control rod and method of manufacturing the same 失效
标题翻译：反应器控制棒及其制造方法
公开(公告)号：US6137854A
公开(公告)日：2000-10-24
申请号：US174259
申请日：1998-10-16
申请人： Makoto Ueda , Shinichi Ishizato , Satoko Tajima , Nagayoshi Ichikawa , Masato Takahashi
发明人： Makoto Ueda , Shinichi Ishizato , Satoko Tajima , Nagayoshi Ichikawa , Masato Takahashi
IPC分类号： G21C7/113 , G21C7/00 , G21C7/06
CPC分类号： G21C7/113 , Y02E30/39
摘要： There is provided a reactor control rod which is capable of suppressing an excessive frictional force acting on passive state oxide films formed on the surfaces of neutron absorber elements, and also reducing the possibility to cause electrochemical problems, and a method of manufacturing the same. The reactor control rod comprises a wing having a sheath which has a substantially U-shaped cross-section. A top end structure is secured to a longitudinal top end of the sheath. A bottom end structure is secured to a longitudinal bottom end of the sheath. An opening portion of the sheath is secured to a central structure. A neutron absorber element is made of neutron absorbing material. The neutron absorber element is charged in the sheath. A supporting rod through hole is formed in the neutron absorber element, so as to penetrate the neutron absorber element. A supporting rod fitting hole is formed in the sheath. A load supporting rod is inserted into the supporting rod through hole. The load supporting rod has a top end portion and a main body portion. The top end portion is inserted into the supporting rod fitting hole, so as to support the weight of the neutron absorber element by the sheath via the load supporting rod. The main body portion has a diameter lager than that of the top end portion. A step is formed by a difference in diameters between the top end portion and the main body portion, so as to create a minute clearance between the sheath and the neutron absorber element.
摘要翻译：提供了一种反应器控制棒，其能够抑制作用在形成在中子吸收体元件的表面上的被动态氧化物膜上的过大摩擦力，并且还降低引起电化学问题的可能性及其制造方法。反应器控制杆包括具有大致U形横截面的护套的翼。顶端结构被固定到护套的纵向顶端。底端结构被固定到护套的纵向底端。护套的开口部分固定到中心结构。中子吸收元件由中子吸收材料制成。中子吸收元件被装入护套中。在中子吸收元件中形成支撑杆通孔，以便穿透中子吸收元件。在护套中形成支撑杆装配孔。负载支撑杆插入支撑杆通孔中。负载支撑杆具有顶端部和主体部。顶端部分插入到支撑杆装配孔中，以便通过负载支撑杆由护套支撑中子吸收元件的重量。主体部分的直径比顶端部分的直径大。通过顶端部分和主体部分之间的直径差异形成台阶，以在护套和中子吸收体元件之间产生微小的间隙。

35. 发明授权

US6097779A Fuel bundle and control rod assembly for a nuclear reactor 失效
标题翻译：用于核反应堆的燃料束和控制棒组件
公开(公告)号：US6097779A
公开(公告)日：2000-08-01
申请号：US24867
申请日：1998-02-17
申请人： Roy C. Challberg , Larry E. Fennern , Russell M. Fawcett
发明人： Roy C. Challberg , Larry E. Fennern , Russell M. Fawcett
IPC分类号： G21C5/06 , G21C7/113 , G21C1/04
CPC分类号： G21C5/06 , G21C7/113 , G21Y2002/301 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
摘要： Fuel bundle and control rod assemblies for a nuclear reactor are described. In one embodiment of the apparatus, the nuclear reactor includes several conventional size fuel bundles and at least one large control rod. The large control rod includes four fuel bundle receiving channels, and each such channel is sized to receive four conventional size fuel bundles.
摘要翻译：描述了用于核反应堆的燃料束和控制棒组件。在该装置的一个实施例中，核反应堆包括几个常规尺寸的燃料束和至少一个大的控制杆。大的控制杆包括四个燃料束接收通道，并且每个这样的通道的尺寸设置成接收四个常规尺寸的燃料束。

36. 发明授权

US5940461A Reactor core for a light water cooled reactor, fuel assembly and control rod 失效
标题翻译：反应堆核心为轻水冷却反应堆，燃料组件和控制棒
公开(公告)号：US5940461A
公开(公告)日：1999-08-17
申请号：US70246
申请日：1998-05-01
申请人： Renzo Takeda , Motoo Aoyama , Masanao Moriwaki
发明人： Renzo Takeda , Motoo Aoyama , Masanao Moriwaki
IPC分类号： G21C5/20 , G21C1/00 , G21C1/08 , G21C3/00 , G21C3/328 , G21C3/62 , G21C7/10 , G21C7/113 , G21C7/117 , G21C1/04
CPC分类号： G21C1/084 , G21C1/00 , G21C3/00 , G21C7/113 , G21Y2002/201 , G21Y2002/601 , G21Y2004/101 , G21Y2004/30 , G21Y2004/60 , Y02E30/31 , Y02E30/39
摘要： To provide a reactor core for light water cooled reactor, a fuel assembly and a control rod intended for Pu multi-recycling at a breeding ratio of about 1.0, or 1.0 or more while keeping the economical or safety performance to the same level as in BWR now under operation, that is, while minimizing the change for the incore structures and maintaining the void coefficient negative. A reactor core for a light water cooled reactor having an effective fuel-to-water volume ratio of 0.1 to 0.6 by the combination of a dense lattice fuel assembly constituted of fuel rods formed by adding Pu to degraded uranium, natural uranium, depleted uranium or low concentrated uranium, coolants at high void fraction of 45% to 70% and a cluster-type, Y-type or cruciform control rod.
摘要翻译：为了提供轻水冷却反应堆的反应堆堆芯，燃料组件和控制棒，用于以约1.0或1.0或更多的育种比率进行Pu多重循环，同时将经济或安全性能保持在与BWR相同的水平现在正在运行，即尽可能减少腋窝结构的变化并保持空白系数为负。一种用于轻水冷却反应器的反应堆堆芯，其由燃料棒组合而成的密集晶格燃料组合组合，其有效燃料与水的体积比为0.1至0.6，所述燃料棒通过将Pu添加到退化的铀，天然铀，贫化铀或低浓度铀，高孔隙率为45％至70％的冷却剂和簇型Y型或十字形控制棒。

37. 发明授权

US5247549A Control rod spacer pad 失效
标题翻译：控制杆间隔垫
公开(公告)号：US5247549A
公开(公告)日：1993-09-21
申请号：US961771
申请日：1992-10-16
申请人： James E. Cearley , Yuen H. Kong
发明人： James E. Cearley , Yuen H. Kong
IPC分类号： G21C7/113 , G21C7/10
CPC分类号： G21C7/10 , G21Y2002/402 , G21Y2002/501 , G21Y2004/30 , G21Y2004/301 , Y02E30/39 , Y10S411/913
摘要： A spacer pad for a nuclear control rod includes first and second halves each including a head and a shank. The shanks are configured for joining together the pad first and second halves, and the shanks are independently locked together for preventing the disassembly thereof. In an exemplary embodiment, the first and second shanks are threadingly joined together, and then independently locked together using a complementary hook and ledge respectively supported by the pad halves which allows assembly together of the pad halves but prevents disassembly thereof.

38. 发明授权

US5247545A Control blade servicing assembly 失效
标题翻译：控制刀片维修组件
公开(公告)号：US5247545A
公开(公告)日：1993-09-21
申请号：US963297
申请日：1992-10-19
申请人： James E. Cearley , Yuen H. Kong
发明人： James E. Cearley , Yuen H. Kong
IPC分类号： G21C7/113 , G21C19/02 , G21C19/10 , G21C19/20
CPC分类号： G21C19/10 , G21C19/207 , Y10S83/917
摘要： An assembly for servicing a cruciform control blade includes a carriage having first and second crossarms each containing a generally U-shaped slot for receiving the top of the control blade. The first crossarm includes a clamping actuator to rigidly clamp the carriage to the blade top. The second crossarm includes a tool positionable adjacent to a roller aperture in a selected one of the four panels of the control blade. The tool is positioned on the second crossarm at a predetermined depth, and at a predetermined lateral span from the first crossarm so that upon mounting of the carriage on the blade top and actuation of the clamping actuator, the tool is vertically and laterally aligned with a center of the panel roller aperture. In one embodiment, the tool is effective to sever the roller from the panel aperture without damaging the panel, and in another embodiment the tool is effective for installing a replacement spacer pad in the aperture.

39. 发明授权

US5034185A Control blade for nuclear reactor 失效
标题翻译：核反应堆控制刀片
公开(公告)号：US5034185A
公开(公告)日：1991-07-23
申请号：US397758
申请日：1989-02-08
申请人： Makoto Ueda , Ritsuo Yoshioka , Tomonobu Sakuranaga , Yuichi Motora , Shigenori Shiga , Munenari Yamamoto
发明人： Makoto Ueda , Ritsuo Yoshioka , Tomonobu Sakuranaga , Yuichi Motora , Shigenori Shiga , Munenari Yamamoto
IPC分类号： G21C7/10 , G21C7/113 , G21C7/24 , G21C7/00
CPC分类号： G21C7/113 , G21C7/24 , G21Y2002/206 , G21Y2002/30 , G21Y2004/10 , G21Y2004/30 , Y02E30/39
摘要： A control blade for a nuclear reactor having inserted upper end structural members and inserted lower end structural members connected to a plurality of wings each in the form of a generally rectangular plate having an longitudinal axis extending in the longitudinal direction of the control blade, the wing being disposed to form a cross-shaped section of the control blade. The wings and the structural members are connected to and supported on a central connection member. Each wing or a sheath member formed within each wing is formed from a diluted alloy obtained by diluting a long-lived neutron absorber such as hafnium with a diluent such as zirconium or titanium. A plurality of neutron absorber housing holes are formed in the diluted alloy section. Specifically, if the housing holes are formed to extend in the widthwise direction of the wing, the sectional area of each housing hole formed in a portion of the control blade corresponding to the region where the subcriticality in the reactor core becomes smaller after the reactor has been shut down by fully inserting the control blade into the core is larger than that of housing holes formed in the other regions. A structure having a means to cope with swelling of the neutron absorber can be applied to the former region.
摘要翻译：一种用于核反应堆的控制叶片，其具有插入的上端结构构件和连接到多个翅片的插入的下端结构构件，每个翼片具有沿着控制叶片的纵向方向延伸的纵向轴线的大致矩形板的形式，翼被设置成形成控制叶片的十字形部分。翼和结构构件连接并支撑在中心连接构件上。每个机翼中形成的每个翼或护套构件由稀释的合金形成，该稀释合金通过用诸如锆或钛的稀释剂稀释长寿命的中子吸收剂例如铪。在稀释的合金部分中形成多个中子吸收器容纳孔。具体来说，如果容纳孔形成为在翼的宽度方向上延伸，则形成在控制叶片的一部分中的每个壳体孔的截面面积对应于反应器堆中的副临界度变小后的区域通过将控制刀片完全插入到芯中被关闭，大于其他区域中形成的壳体孔的尺寸。具有应对中子吸收体溶胀的手段的结构可以应用于前一个区域。

40. 发明授权

US4925620A Control rod absorber section fabrication by square tube configuration and dual laser welding process 失效
标题翻译：控制杆吸收器部分采用方管配置和双激光焊接工艺制造
公开(公告)号：US4925620A
公开(公告)日：1990-05-15
申请号：US250631
申请日：1988-09-29
申请人： Louis L. Aiello , James E. Charnley , James A. Mees , Robert C. Dixon
发明人： Louis L. Aiello , James E. Charnley , James A. Mees , Robert C. Dixon
IPC分类号： G21C7/113 , G21C21/18
CPC分类号： G21C21/18 , G21C7/113 , G21Y2002/104 , G21Y2002/206 , G21Y2004/30 , Y02E30/39
摘要： An apparatus and process for the construction of a cruciformed section control rod is disclosed. The control rod is characterized by having square exterior sectioned tubes with central cylindrical volumes for the containment of neutron absorbing poisons. In the process, these tubes are welded together at the corners of the square sections to form the planar members of the cruciformed shaped rods. An apparatus and process is disclosed in which the rods are all held by a jig in the same configuration as is ultimately fabricated. Thereafter, the jig is drawn through fixtures, which fixtures accurately guide the rods to be joined by welding past paired and opposed laser welding heads. By the expedient of positioning the laser and rapidly drawing the braced together tubes by the laser, control rod fabrication occurs. There results a solid, integral control rod constituting a suitable pressure vessel for neutron absorbers for control of nuclear reactions.

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