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    • 2. 发明申请
    • STRUCTURE FOR SUPPRESSING FLOW VIBRATION OF INSTRUMENTATION GUIDE TUBE
    • 用于抑制仪表导管流动振动的结构
    • US20100091929A1
    • 2010-04-15
    • US12527484
    • 2009-02-22
    • Nobuki UdaShigeyuki WatanabeKazuo HirotaHideyuki SakataHideyuki MoritaMakoto NakajimaChikara KurimuraToshio Ichikawa
    • Nobuki UdaShigeyuki WatanabeKazuo HirotaHideyuki SakataHideyuki MoritaMakoto NakajimaChikara KurimuraToshio Ichikawa
    • G21C17/10
    • G21C17/10G21C3/322G21C17/08
    • An upper hole 37A and a lower hole 37B are provided at two positions, namely, upper and lower portions, of a side surface of a guide tube 27, and a thimble tube 22 is pressed against an inner circumferential surface of the guide tube 27, by a differential pressure between coolant inside and outside the upper hole 37A and the lower hole 37B. It is preferable that an upper pressure adjustment hole and a lower pressure adjustment hole are provided at two positions, namely, upper and lower portions, of a side surface of an upper core support column 21, and a coolant flowing into the guide tube from an upper end of the guide tube flows out to the outside from inside the guide tube through a gap between the thimble tube and the upper hole, and also flows out to the outside from inside the upper core support column through the upper pressure adjustment hole, and a coolant flowing into the guide tube from a lower end of the guide tube flows out to the outside from inside the guide tube through a gap between the thimble tube and the lower hole, and also flows out to the outside from inside the upper core support column through the lower pressure adjustment hole.
    • 在引导管27的侧面的两个位置,即上下部分设置有上孔37A和下孔37B,并且将套管22压靠在引导管27的内周面上, 通过上部孔37A和下部孔37B的内部和外部的冷却剂之间的压力差。 优选的是,上压力调节孔和下压力调节孔设置在上芯支撑柱21的侧表面的两个位置,即上部和下部,以及从上部芯支撑柱21的侧表面流入导管的冷却剂 引导管的上端通过引导管和上孔之间的间隙从导管的内部流出到外部,并且还通过上压力调节孔从上芯支撑柱的内部流出到外部,并且 从引导管的下端流入引导管的冷却剂通过引导管和下孔之间的间隙从引导管的内部流出到外部,并且还从上部芯支撑体内部流出到外部 柱通过下压力调节孔。
    • 4. 发明授权
    • Fuel assembly for PWR nuclear reactor
    • PWR核反应堆燃料组件
    • US08406369B2
    • 2013-03-26
    • US12063348
    • 2007-02-15
    • Hideyuki SakataYasunao YamaguchiJun ShimizuShigeyuki Watanabe
    • Hideyuki SakataYasunao YamaguchiJun ShimizuShigeyuki Watanabe
    • G21C1/04
    • G21C3/322G21C3/3315G21Y2002/303G21Y2004/302Y02E30/32Y02E30/38
    • Provided is a fuel assembly 1 for a PWR nuclear reactor capable of stably creating transverse flows of coolant for pressing and securing control rods so as to restrain vibration of the control rods in order to restrain the outer surfaces of the control rods and the inner surfaces of control rod guide tubes from being worn, wherein an upper nozzle arranged above the fuel assembly comprises an adapter plate 6 constituting the lower structure of the upper nozzle, a side wall extended along the periphery of the adapter plate, an overhang projected into a space above the adapter plate from the upper part of the side wall, and apertures for attaching control guide tubes and passage holes, which are formed in the passage surface of the adapter plate, and wherein those 15A, 15B, 15C of the passage holes which are located at positions where the coolant impinges upon the overhang are generally arranged, line-symmetric with respect to diagonal lines of the passage surface serving as symmetric axes Q, and ligaments 21, 23 around the passage holes located inside and outside of those 11a of the attaching apertures which are located on the outer peripheral side are set to be larger than ligaments 22 around the passage holes which are located on opposite transverse sides of those of the attaching apertures.
    • 提供一种用于PWR核反应堆的燃料组件1,其能够稳定地产生用于按压和固定控制棒的冷却剂的横向流动,以便抑制控制棒的振动,以便限制控制棒和内表面的外表面 控制杆引导管不被磨损,其中布置在燃料组件上方的上喷嘴包括构成上喷嘴下部结构的适配器板6,沿适配器板的周边延伸的侧壁,突出到上方的空间中的突出部 来自侧壁的上部的适配器板,以及形成在适配器板的通道表面中的用于附接控制引导管和通孔的孔,并且其中位于所述通孔的那些15A,15B,15C 在冷却剂冲击突出部位的位置通常布置成相对于用作对称轴的通道表面的对角线线对称 并且位于外周侧的安装孔的那些11a的内侧和外侧的通道孔周围的韧带21,23被设定为大于位于相对横向侧的通孔周围的韧带22 的连接孔的那些。
    • 6. 发明申请
    • FUEL ASSEMBLY FOR PWR NUCLEAR REACTOR
    • 燃油组装PWR核反应堆
    • US20090285347A1
    • 2009-11-19
    • US12063348
    • 2007-02-15
    • Hideyuki SakataYasunao YamaguchiJun ShimizuShigeyuki Watanabe
    • Hideyuki SakataYasunao YamaguchiJun ShimizuShigeyuki Watanabe
    • G21C1/04
    • G21C3/322G21C3/3315G21Y2002/303G21Y2004/302Y02E30/32Y02E30/38
    • Provided is a fuel assembly 1 for a PWR nuclear reactor capable of stably creating transverse flows of coolant for pressing and securing control rods so as to restrain vibration of the control rods in order to restrain the outer surfaces of the control rods and the inner surfaces of control rod guide tubes from being worn, wherein an upper nozzle arranged above the fuel assembly comprises an adapter plate 6 constituting the lower structure of the upper nozzle, a side wall extended along the periphery of the adapter plate, an overhang projected into a space above the adapter plate from the upper part of the side wall, and apertures for attaching control guide tubes and passage holes, which are formed in the passage surface of the adapter plate, and wherein those 15A, 15B, 15C of the passage holes which are located at positions where the coolant impinges upon the overhang are generally arranged, line-symmetric with respect to diagonal lines of the passage surface serving as symmetric axes Q, and ligaments 21, 23 around the passage holes located inside and outside of those 11a of the attaching apertures which are located on the outer peripheral side are set to be larger than ligaments 22 around the passage holes which are located on opposite transverse sides of those of the attaching apertures.
    • 提供一种用于PWR核反应堆的燃料组件1,其能够稳定地产生用于按压和固定控制棒的冷却剂的横向流动,以便抑制控制棒的振动,以便限制控制棒和内表面的外表面 控制杆引导管不被磨损,其中布置在燃料组件上方的上喷嘴包括构成上喷嘴下部结构的适配器板6,沿适配器板的周边延伸的侧壁,突出到上方的空间中的突出部 来自侧壁的上部的适配器板,以及形成在适配器板的通道表面中的用于附接控制引导管和通孔的孔,并且其中位于所述通孔的那些15A,15B,15C 在冷却剂冲击突出部位的位置通常布置成相对于用作对称轴的通道表面的对角线线对称 并且位于外周侧的安装孔的那些11a的内侧和外侧的通道孔周围的韧带21,23被设定为大于位于相对横向侧的通孔周围的韧带22 的连接孔的那些。