公开(公告)号：EP2839481B1

公开(公告)日：2017-08-02

申请号：EP13797747.6

申请日：2013-03-06

申请人： Babcock & Wilcox MPower, Inc.

发明人： ULLMANN, Julius, M ,  WALTON, Lewis, A ,  JOHNSON, Mary, W

IPC分类号： G21C15/243 ,  G21C3/12 ,  G21C3/33 ,  G21C5/06 ,  G21C1/32

CPC分类号： G21C3/326 ,  G21C1/32 ,  G21C3/12 ,  G21C3/3305 ,  G21C5/06 ,  Y02E30/40

公开(公告)号：EP2839481A1

公开(公告)日：2015-02-25

申请号：EP13797747.6

申请日：2013-03-06

申请人： Babcock & Wilcox MPower Inc.

发明人： ULLMANN, Julius, M ,  WALTON, Lewis, A ,  JOHNSON, Mary, W

IPC分类号： G21C15/243

CPC分类号： G21C3/326 ,  G21C1/32 ,  G21C3/12 ,  G21C3/3305 ,  G21C5/06 ,  Y02E30/40

摘要： A nuclear reactor has a core installed on a lower core plate and formed from multiple fuel assemblies, each fuel assembly including a structural cage assembly. The structural cage assembly has an upper end fitting, mid grids, and a lower end fitting (LEF). The LEF positions the fuel assembly using four locating pins located at each corner of the LEF. The pins position the fuel assembly laterally by mating with receiving holes in the lower core plate. The locating pins have a chamfered tip with a flat end. The chamfered tip allows for a greater positioning margin when installing the fuel assembly in the core by guiding the pins into holes in the lower core plate, and the flat tip provides strength and stability in case the assembly is inadvertently rested on the tip of the pin instead of the LEF pads.

摘要翻译： 核反应堆具有安装在下芯板上并由多个燃料组件形成的核心，每个燃料组件包括结构笼组件。 结构笼组件具有上端配件，中间网格和下端配件（LEF）。 LEF使用位于LEF每个角落处的四个定位销定位燃料组件。 这些销通过与下芯板上的接收孔配合而侧向地定位燃料组件。 定位销具有带平端的倒角尖端。 通过将销引导到下芯板中的孔中，当将燃料组件安装在芯中时，倒角尖端允许更大的定位余量，并且平头提供强度和稳定性，以防组件无意中搁置在销的尖端 而不是LEF垫。