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公开(公告)号：US4432930A
公开(公告)日：1984-02-21
申请号：US217054
申请日：1980-12-16
CPC分类号： G21C7/27 , G21C7/117 , G21Y2002/201 , G21Y2004/302 , G21Y2004/40 , Y02E30/39
摘要： A method of operating a pressurized water nuclear reactor comprising determining the present core power and reactivity levels and predicting the change in such levels due to displacer rod movements. Groups or single clusters of displacer rods can be inserted or withdrawn based on the predicted core power and reactivity levels to change the core power level and power distribution thereby providing load follow capability, without changing control rod positions or coolant boron concentrations.
摘要翻译： 一种操作加压水核反应堆的方法，包括确定当前的核心功率和反应性水平，并预测由于置换棒移动而导致的这种水平的变化。 可以基于预测的核心功率和反应性水平来插入或取出置换棒的单个簇或单个簇，以改变核心功率水平和功率分布，从而提供负载跟随能力，而不改变控制棒位置或冷却剂硼浓度。
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公开(公告)号：US4418462A
公开(公告)日：1983-12-06
申请号：US277553
申请日：1981-06-26
申请人： Lewis A. Walton
发明人： Lewis A. Walton
CPC分类号： G21C7/117 , G21C7/04 , G21C7/10 , G21Y2002/402 , G21Y2004/30 , Y02E30/39 , Y10T29/49821 , Y10T29/49822
摘要： A technique is provided for engaging and disengaging burnable poison rods from the spider in a fuel assembly. The cap on the end of each of the burnable poison rods is provided with a shank that is received in the respective bore formed in the spider. In one illustrative embodiment, the shank is deformed to firmly secure the rod and attached shank in the spider bore. Pressing the shank in the direction of the bore axis overcomes the deformation to release the particular rod from the spider.
摘要翻译： 提供了一种用于在燃料组件中从蜘蛛中接合和分离可燃毒物的技术。 每个可燃毒物杆的末端上的盖设置有一个柄，该柄被容纳在形成在蜘蛛中的相应孔中。 在一个说明性实施例中，柄变形以将杆和附接的柄牢固地固定在蜘蛛孔中。 沿轴孔方向按压柄杆克服了变形，以将特定的杆从蜘蛛上释放出来。
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公开(公告)号：US4314885A
公开(公告)日：1982-02-09
申请号：US952523
申请日：1978-10-18
CPC分类号： G21C7/117 , G21C7/04 , G21C7/10 , G21Y2002/302 , G21Y2002/402 , G21Y2004/30 , G21Y2004/40 , Y02E30/39 , Y10T29/49822 , Y10T29/49826
摘要： A technique is provided for engaging and disengaging burnable poison rods from the spider in a fuel assembly. The cap on the end of each of the burnable poison rods is provided with a shank that is received in the respective bore formed in the spider. A frangible flange secures the shank and rod to the spider. Pressing the shank in the direction of the bore axis ruptures the frangible flange to release the rod from the spider.
摘要翻译： 提供了一种用于在燃料组件中从蜘蛛中接合和分离可燃毒物的技术。 每个可燃毒物杆的末端上的盖设置有一个柄，该柄被容纳在形成在蜘蛛中的相应孔中。 易碎的法兰将柄和杆固定在蜘蛛上。 沿轴孔方向按压柄部破裂易碎的法兰，以将杆从蜘蛛上释放出来。
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84.发明授权Attachment and locking of finger control rods in a nuclear reactor of BWR type 失效BWR型核反应堆手指控制杆的连接和锁定
公开(公告)号：US3930938A
公开(公告)日：1976-01-06
申请号：US403492
申请日：1973-10-04
申请人： Ake Berglund , Antti Suvanto
发明人： Ake Berglund , Antti Suvanto
CPC分类号： G21C7/117 , G21Y2002/206 , G21Y2002/301 , G21Y2004/301 , Y02E30/31 , Y02E30/39 , Y10T403/7007
摘要： In a nuclear reactor of the BWR type having finger control rods mounted in guide tubes and having a member movable upwardly to push the control rods into the guide tubes, the control rods are connected to this member by a joint such as a bayonet joint releasable by turning of the control rods about their longitudinal axis. On the upper ends of each control rod is slidably mounted a sleeve which is spring-pressed downwardly. This sleeve is non-rotatable with respect to the control rod. The sleeve has either a square lower end slidable within a square tube or has projections at its lower end in a round tube having ribs running longitudinally thereof. The arrangement is such that when the support is in its uppermost position the control rods project above the fuel assembly and the sleeve can be raised against the spring action out of the upper ends of the tubes so as to permit turning of the rods to release them for removal.
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公开(公告)号：US3879259A
公开(公告)日：1975-04-22
申请号：US36054073
申请日：1973-05-15
申请人： ASEA ATOM AB
发明人： PERSSON NILS OLOF , SUVANTO ANTTI , TORNBLOM LARS , HAGA INGVALD
CPC分类号： G21C7/10 , G21C3/326 , G21C7/117 , G21Y2002/206 , G21Y2002/301 , G21Y2004/30 , Y02E30/38 , Y02E30/39
摘要： A core module for nuclear reactors includes a core support grid having hollow tubes extending upwardly therefrom and fuel assemblies mounted on the upper ends of said tubes with their interiors in communication with the interiors of the tubes. There are a number of control rods around the periphery of each module which are connected by a single control rod yoke, the control rods being guided on the outsides of the core support tubes. The yoke is connected to the core rod drive.
摘要翻译： 用于核反应堆的核心模块包括具有从其向上延伸的中空管的芯支撑网格和安装在所述管的上端上的燃料组件，其内部与管的内部连通。 在每个模块周围有一些控制杆，它们通过单个控制杆轭连接，控制杆在芯支撑管的外侧被引导。 轭连接到芯棒驱动器。
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公开(公告)号：US20180197640A1
公开(公告)日：2018-07-12
申请号：US15404477
申请日：2017-01-12
CPC分类号： G21C3/332 , G21C3/26 , G21C3/322 , G21C3/326 , G21C3/3267 , G21C3/3305 , G21C3/334 , G21C3/34 , G21C7/117 , G21C7/12 , G21C7/20 , G21C9/02 , Y02E30/38 , Y02E30/39
摘要： A nuclear fuel assembly comprising a plurality of control rod guide assemblies. At least one of the control rod guide assemblies includes a guide tube having an axial dimension, the guide tube being supported by the plurality of grids and extending axially between the top nozzle and the bottom nozzle, the guide tube having an upper portion having a first radius and a lower portion having a second radius less than the first radius, and an external dashpot tube disposed around a portion of the lower portion in an area beginning at the bottom grid and extending toward the top nozzle.
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公开(公告)号：US20180190392A1
公开(公告)日：2018-07-05
申请号：US15858727
申请日：2017-12-29
申请人： NuScale Power, LLC
发明人： Christian LOBSCHEID
IPC分类号： G21C7/14
摘要： The drive assembly includes annular drive magnets extending around a top end of a drive shaft and annular drive coils extending around the drive magnets, separated by a pressure boundary. A latch assembly is coupled to the drive magnets and engages with the drive shaft in response to actuation of the drive assembly. The drive coils also rotate the drive magnets and the engaged latch assembly to axially displace the drive shaft. Deactivating the drive coils disengages the latch assembly from the drive shaft, dropping a connected control rod assembly via gravity into a nuclear fuel assembly. A disconnect assembly includes a disconnect magnet coupled to the top end of a disconnect rod that extends through the drive shaft. Annular disconnect coils extend around the disconnect magnet, separated by a pressure boundary, to hold the disconnect magnet and the disconnect rod in a raised position to remotely disconnect from, or reconnect the drive shaft to, the control rod assembly.
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公开(公告)号：US20160247584A1
公开(公告)日：2016-08-25
申请号：US15147262
申请日：2016-05-05
发明人： Scott J. Shargots , Matthew W. Ales
摘要： A control rod guide frame comprises a self supporting stack of two or more columnar elements defining a central passage. The columnar elements may include mating features that mate at abutments between adjacent columnar elements of the stack. The control rod guide frame is suitably used in conjunction with a control rod drive mechanism (CRDM) operatively connected with at least one control rod, and a nuclear reactor core, in which the CRDM moves the at least one control rod into and out of the nuclear reactor core under guidance of the control rod guide frame. In another embodiment, a control rod guide frame comprises a stack of two or more columnar elements defining a central passage having a constant cross-section as a function of position along the central passage. In another embodiment, a control rod guide frame comprises an extruded columnar element providing continuous control rod guidance.
摘要翻译： 控制杆引导框架包括限定中心通道的两个或更多个柱状元件的自支撑叠层。 柱状元件可以包括在堆叠的相邻柱状元件之间的邻接处配合的配合特征。 控制杆引导框架适用于与至少一个控制杆操作连接的控制杆驱动机构（CRDM）和核反应堆堆芯，其中，CRDM将至少一个控制杆移入和移出 核反应堆核心在控制杆引导架的引导下。 在另一个实施例中，控制杆引导框架包括两个或更多个柱状元件的堆叠，所述柱状元件限定具有作为沿着中心通道的位置的函数的恒定横截面的中心通道。 在另一个实施例中，控制杆引导框架包括提供连续控制杆引导的挤压柱状元件。
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公开(公告)号：US09378853B2
公开(公告)日：2016-06-28
申请号：US12909252
申请日：2010-10-21
申请人： Scott J. Shargots , Mathew W. Ales
发明人： Scott J. Shargots , Mathew W. Ales
摘要： A control rod guide frame comprises a self supporting stack of two or more columnar elements defining a central passage. The columnar elements may include mating features that mate at abutments between adjacent columnar elements of the stack. The control rod guide frame is suitably used in conjunction with a control rod drive mechanism (CRDM) operatively connected with at least one control rod, and a nuclear reactor core, in which the CRDM moves the at least one control rod into and out of the nuclear reactor core under guidance of the control rod guide frame. In another embodiment, a control rod guide frame comprises a stack of two or more columnar elements defining a central passage having a constant cross-section as a function of position along the central passage. In another embodiment, a control rod guide frame comprises an extruded columnar element providing continuous control rod guidance.
摘要翻译： 控制杆引导框架包括限定中心通道的两个或更多个柱状元件的自支撑叠层。 柱状元件可以包括在堆叠的相邻柱状元件之间的邻接处配合的配合特征。 控制杆引导框架适用于与至少一个控制杆操作连接的控制杆驱动机构（CRDM）和核反应堆堆芯，其中，CRDM将至少一个控制杆移入和移出 核反应堆核心在控制杆引导架的引导下。 在另一个实施例中，控制杆引导框架包括两个或更多个柱状元件的堆叠，所述柱状元件限定具有作为沿着中心通道的位置的函数的恒定横截面的中心通道。 在另一个实施例中，控制杆引导框架包括提供连续控制杆引导的挤压柱状元件。
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公开(公告)号：US09336910B2
公开(公告)日：2016-05-10
申请号：US12899739
申请日：2010-10-07
CPC分类号： G21C7/14 , G21C7/10 , G21C7/117 , G21C7/12 , G21C7/20 , G21Y2002/30 , G21Y2002/302 , G21Y2004/30 , Y02E30/39
摘要： A nuclear reactor includes a pressure vessel, and a control rod assembly including at least one movable control rod comprising a neutron absorbing material, 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 first portion comprising a first material having a first density at room temperature, and a second portion comprising a second material having a second density at room temperature that is greater than the first density. In some embodiments the coupling includes a connecting rod including a hollow or partially hollow connecting rod tube comprising a first material having a first density and a filler disposed in the hollow or partially hollow connecting rod tube, the filler comprising a second material having a second density greater than the first density.
摘要翻译： 核反应堆包括压力容器和包括至少一个包括中子吸收材料的可移动控制棒的控制杆组件，用于控制至少一个控制棒的运动的控制棒驱动机构（CRDM）和可操作地连接 所述至少一个控制杆和所述CRDM。 联接器包括第一部分，其包括在室温下具有第一密度的第一材料，第二部分包括在室温下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，联接器包括连杆，该连杆包括中空或部分中空的连杆管，其包括具有第一密度的第一材料和设置在中空或部分中空的连杆管中的填料，填料包括具有第二密度的第二材料 大于第一密度。
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