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公开(公告)号：US08594269B2
公开(公告)日：2013-11-26
申请号：US11332058
申请日：2006-01-13
申请人： Yuriy Aleshin , James A. Sparrow , Keith J. Drudy
发明人： Yuriy Aleshin , James A. Sparrow , Keith J. Drudy
IPC分类号： G21C3/34
CPC分类号： G21C3/32 , G21Y2002/104 , G21Y2002/206 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： The present invention provides novel fuel assemblies for use with PWR nuclear reactors and power plants, and in particular, VVER nuclear reactors. The fuel assemblies offer enhanced structural stability, skeletal rigidity, and distortion (bow and twist) resistance to support high burn-up fuel management. Each fuel assembly may include a plurality of fuel rods, a plurality of control rods and guide thimbles, at least one instrumentation tube, and a plurality of grids. At least one fuel rod is replaced with a structural support replacement rod made from zirconium (Zr) alloy, stainless steel, or any other suitable material. The structural support replacement rod may be hollow or solid. The structural support replacement rods are preferably disposed at or about the periphery, and in some cases, the corners of the geometric array, which is preferably a hexagon or square.
摘要翻译： 本发明提供了用于PWR核反应堆和发电厂，特别是VVER核反应堆的新型燃料组件。 燃料组件提供增强的结构稳定性，骨架刚度和变形（弯曲和扭转）阻力，以支持高燃耗燃料管理。 每个燃料组件可以包括多个燃料棒，多个控制棒和引导套管，至少一个仪表管和多个网格。 使用由锆（Zr）合金，不锈钢或任何其他合适的材料制成的结构支撑置换杆代替至少一个燃料棒。 结构支撑置换杆可以是中空的或固体的。 结构支撑置换杆优选地设置在周边处或周围，并且在一些情况下设置在几何阵列的角部，其优选地是六边形或正方形。
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公开(公告)号：US06738447B1
公开(公告)日：2004-05-18
申请号：US10444469
申请日：2003-05-22
IPC分类号： G21C300
CPC分类号： G21C3/3315 , G21C3/331 , G21C7/20 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
摘要： A high energy absorption top nozzle for a nuclear fuel assembly that employs an elongated upper tubular housing and an elongated lower tubular housing slidable within the upper tubular housing. The upper and lower housings are biased away from each other by a plurality of longitudinally extending springs that are restrained by a longitudinally moveable piston whose upward travel is limited within the upper housing. The energy imparted to the nozzle by a control rod scram is mostly absorbed by the springs and the hydraulic affect of the piston within the nozzle.
摘要翻译： 用于核燃料组件的高能量吸收顶部喷嘴，其采用细长的上部管状壳体和可在上部管状壳体内滑动的细长的下部管状壳体。 上壳体和下壳体被多个纵向延伸的弹簧彼此远离，该弹簧由纵向可移动的活塞约束，其向上行程限制在上壳体内。 通过控制杆冲击而施加到喷嘴的能量主要被弹簧吸收并且活塞在喷嘴内的液压影响。
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公开(公告)号：US07668284B2
公开(公告)日：2010-02-23
申请号：US12332662
申请日：2008-12-11
IPC分类号： G21C3/32
CPC分类号： G21C7/20 , G21Y2002/104 , G21Y2002/304 , G21Y2004/40 , Y02E30/39
摘要： A nuclear fuel assembly having a tube-in-tube control rod guide tube design that incorporates an end plug that extends axially upward to an elevation above the lower most grid where it is sealed at its upper end to the lower end of the control rod guide tube. The guide tube lower end plug has a threaded recess in its upper surface that mates with a corresponding dashpot end plug threaded extension that is formed as an insert in the lower end of the guide tube. A hole formed through the outer wall of the guide tube end plug at the elevation of the lower portion of the recess provides a positive inspection port for assuring the proper seating of the dashpot. A method of manufacture of such a fuel assembly is also disclosed.
摘要翻译： 一种核燃料组件，其具有管中管控制杆引导管设计，其包括沿轴向向上延伸到最下部格栅上方的高度的端塞，其在其上端被密封在控制杆引导件的下端 管。 引导管下端塞在其上表面具有螺纹凹槽，其与相应的缓冲器端塞螺纹延伸部配合，该延伸部形成为在导管的下端中的插入件。 在凹槽下部的高度处，通过导管端塞的外壁形成的孔提供了一个正的检查口，用于确保缓冲器的适当的安放。 还公开了一种制造这种燃料组件的方法。
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公开(公告)号：US07515674B2
公开(公告)日：2009-04-07
申请号：US11583466
申请日：2006-10-18
IPC分类号： G21C3/34
CPC分类号： G21C7/20 , G21Y2002/104 , G21Y2002/304 , G21Y2004/40 , Y02E30/39
摘要： A nuclear fuel assembly having a tube-in-tube control rod guide tube design that incorporates an end plug that extends axially upward to an elevation above the lower most grid where it is sealed at its tipper end to the lower end of the control rod guide tube. The guide tube lower end plug has a threaded recess in its upper surface that mates with a corresponding dashpot end plug threaded extension that is formed as an insert in the lower end of the guide tube. A hole formed through the outer wall of the guide tube end plug at the elevation of the lower portion of the recess provides a positive inspection port for assuring the proper seating of the dashpot. A method of manufacture of such a fuel assembly is also disclosed.
摘要翻译： 一种核燃料组件，其具有管中管控制杆引导管设计，其包括端轴塞，所述端塞沿轴向向上延伸至最下部格栅上方的高度，其中，在其倾斜端部处密封到控制杆引导件的下端 管。 引导管下端塞在其上表面具有螺纹凹槽，其与相应的缓冲器端塞螺纹延伸部配合，该延伸部形成为在导管的下端中的插入件。 在凹槽下部的高度处，通过导管端塞的外壁形成的孔提供了一个正的检查口，用于确保缓冲器的适当的安放。 还公开了一种制造这种燃料组件的方法。
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公开(公告)号：US20080137798A1
公开(公告)日：2008-06-12
申请号：US11583466
申请日：2006-10-18
IPC分类号： G21C3/00
CPC分类号： G21C7/20 , G21Y2002/104 , G21Y2002/304 , G21Y2004/40 , Y02E30/39
摘要： A nuclear fuel assembly having a tube-in-tube control rod guide tube design that incorporates an end plug that extends axially upward to an elevation above the lower most grid where it is sealed at its tipper end to the lower end of the control rod guide tube. The guide tube lower end plug has a threaded recess in its upper surface that mates with a corresponding dashpot end plug threaded extension that is formed as an insert in the lower end of the guide tube. A hole formed through the outer wall of the guide tube end plug at the elevation of the lower portion of the recess provides a positive inspection port for assuring the proper seating of the dashpot. A method of manufacture of such a fuel assembly is also disclosed.
摘要翻译： 一种核燃料组件，其具有管中管控制杆引导管设计，其包括端轴塞，所述端塞沿轴向向上延伸至最下部格栅上方的高度，其中，在其倾斜端部处密封到控制杆引导件的下端 管。 引导管下端塞在其上表面具有螺纹凹槽，其与相应的缓冲器端塞螺纹延伸部配合，该延伸部形成为在导管的下端中的插入件。 在凹槽下部的高度处，通过导管端塞的外壁形成的孔提供了一个正的检查口，用于确保缓冲器的适当的安放。 还公开了一种制造这种燃料组件的方法。
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公开(公告)号：US20080084957A1
公开(公告)日：2008-04-10
申请号：US11544697
申请日：2006-10-06
申请人： Yuriy Aleshin , James A. Sparrow
发明人： Yuriy Aleshin , James A. Sparrow
IPC分类号： G21G1/06
摘要： A nuclear fuel assembly having improved dimensional stability to support aggressive fuel management wherein the fuel skeleton lateral stiffness is enhanced by the addition of a second joint attachment between the control rod guide thimble and spacer grid support sleeve.
摘要翻译： 一种核燃料组件，其具有改进的尺寸稳定性以支持积极的燃料管理，其中通过在控制杆导向套管和间隔栅格支撑套筒之间增加第二接头附件来增强燃料骨架横向刚度。
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公开(公告)号：US20090252281A1
公开(公告)日：2009-10-08
申请号：US12332662
申请日：2008-12-11
IPC分类号： G21C3/32
CPC分类号： G21C7/20 , G21Y2002/104 , G21Y2002/304 , G21Y2004/40 , Y02E30/39
摘要： A nuclear fuel assembly having a tube-in-tube control rod guide tube design that incorporates an end plug that extends axially upward to an elevation above the lower most grid where it is sealed at its upper end to the lower end of the control rod guide tube. The guide tube lower end plug has a threaded recess in its upper surface that mates with a corresponding dashpot end plug threaded extension that is formed as an insert in the lower end of the guide tube. A hole formed through the outer wall of the guide tube end plug at the elevation of the lower portion of the recess provides a positive inspection port for assuring the proper seating of the dashpot. A method of manufacture of such a fuel assembly is also disclosed.
摘要翻译： 一种核燃料组件，其具有管中管控制杆引导管设计，其包括沿轴向向上延伸到最下部格栅上方的高度的端塞，其在其上端被密封在控制杆引导件的下端 管。 引导管下端塞在其上表面具有螺纹凹槽，其与相应的缓冲器端塞螺纹延伸部配合，该延伸部形成为在导管的下端中的插入件。 在凹槽下部的高度处，通过导管端塞的外壁形成的孔提供了一个正的检查口，用于确保缓冲器的适当的安放。 还公开了一种制造这种燃料组件的方法。
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公开(公告)号：US20120177170A1
公开(公告)日：2012-07-12
申请号：US12985430
申请日：2011-01-06
申请人： Yuriy Aleshin , Stephen H. Green , Andrew Atwood , Hemant Shah
发明人： Yuriy Aleshin , Stephen H. Green , Andrew Atwood , Hemant Shah
IPC分类号： G21C15/22
摘要： A nuclear fuel rod plenum spring assembly that has a spacer affixed to the lower end of the ground torsion spring. The spacer has a substantially flat surface on its underside that presses against the upper surface of the upper fuel pellets to spread the load of the spring over the top surface of the upper most fuel pellet.
摘要翻译： 一种核燃料棒通风弹簧组件，其具有固定在地扭力弹簧下端的间隔件。 间隔件在其下侧具有基本上平坦的表面，其压靠上部燃料颗粒的上表面，以将弹簧的载荷扩展到最上面的燃料颗粒的顶表面上。
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公开(公告)号：US08842796B2
公开(公告)日：2014-09-23
申请号：US13302104
申请日：2011-11-22
申请人： Yuriy Aleshin , David B. Mitchell
发明人： Yuriy Aleshin , David B. Mitchell
IPC分类号： G21C17/06
CPC分类号： G21C17/06
摘要： A method of detecting defects in nuclear fuel within a fuel rod that first heats the fuel rod to a temperature substantially above the ambient temperature. The surface temperature of the fuel rod cladding is then monitored as the fuel rod is allowed to cool. Variations in the temperature measured over the surface is then noted as an indication of defects.
摘要翻译： 一种检测燃料棒内的核燃料中的缺陷的方法，其首先将燃料棒加热至远高于环境温度的温度。 然后当燃料棒被冷却时，监测燃料棒包层的表面温度。 然后将在表面上测量的温度变化作为缺陷的指示。
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公开(公告)号：US08666018B2
公开(公告)日：2014-03-04
申请号：US12985430
申请日：2011-01-06
申请人： Yuriy Aleshin , Stephen H. Green , Andrew Atwood , Hemant Shah
发明人： Yuriy Aleshin , Stephen H. Green , Andrew Atwood , Hemant Shah
IPC分类号： G21C3/00
摘要： A nuclear fuel rod plenum spring assembly that has a spacer affixed to the lower end of the ground torsion spring. The spacer has a substantially flat surface on its underside that presses against the upper surface of the upper fuel pellets to spread the load of the spring over the top surface of the upper most fuel pellet.
摘要翻译： 一种核燃料棒通风弹簧组件，其具有固定在地扭力弹簧下端的间隔件。 间隔件在其下侧具有基本上平坦的表面，其压靠上部燃料颗粒的上表面，以将弹簧的载荷扩展到最上面的燃料颗粒的顶表面上。
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