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    Fuel spacer of separate cell type and manufacturing method therefor
    1.
    发明授权
    Fuel spacer of separate cell type and manufacturing method therefor 失效
    独立电池型燃料间隔器及其制造方法

    公开(公告)号：US4985199A

    公开(公告)日：1991-01-15

    申请号：US250111

    申请日：1988-09-28

    申请人： Makoto Irube ,  Junjiro Nakajima ,  Hajime Umehara ,  Nobuo Tada ,  Masayoshi Ajima

    发明人： Makoto Irube ,  Junjiro Nakajima ,  Hajime Umehara ,  Nobuo Tada ,  Masayoshi Ajima

    IPC分类号： G21C3/34 ,  G21C3/344

    CPC分类号： G21C3/344 ,  Y02E30/40

    摘要： Each of cylindrical members composing a fuel spacer of separate cell type is formed at a edge portion thereof with a positioning notch or a positioning projection, which is located just opposite to one of fuel rod supporting projections formed on the inner surface of the cylindrical member. In manufacturing of the fuel spacer, the positioning notches or projections of the cylindrical members are engaged with the positioning projections or recesses formed on fuel spacer assembly jigs for precise and easy positioning of cylindrical members.

    摘要翻译： 构成分离单元型燃料间隔件的圆柱形构件的边缘部分形成有定位凹口或定位凸起，该定位凹口位于与形成在圆柱形构件的内表面上的燃料棒支撑突起之一正好相对的位置。 在燃料间隔件的制造中，圆柱形构件的定位凹口或凸起与形成在燃料间隔件组件夹具上的定位凸起或凹槽接合，以便精确和容易地定位圆柱形构件。

    Fuel spacer and fuel assembly
    2.
    发明授权
    Fuel spacer and fuel assembly 失效
    燃油舱和燃油组件

    公开(公告)号：US5610960A

    公开(公告)日：1997-03-11

    申请号：US519099

    申请日：1995-08-24

    申请人： Kensuke Tokunaga ,  Yasuhiro Aizawa ,  Junjiro Nakajima ,  Masana Sasaki ,  Masayoshi Ajima ,  Masafumi Imai

    发明人： Kensuke Tokunaga ,  Yasuhiro Aizawa ,  Junjiro Nakajima ,  Masana Sasaki ,  Masayoshi Ajima ,  Masafumi Imai

    IPC分类号： G21C3/344 ,  G21C3/356 ,  G21C3/34

    CPC分类号： G21C3/344 ,  G21C3/3566 ,  Y02E30/40

    摘要： With an arrangement that the axial distance from the upper end of a first opening area to the upper end of the second opening area is equal to the axial distance from the upper end of a first coupling member to the upper end of a second coupling member, when a spring member is moved upwardly relative to round cells, the upper end of the second coupling member comes into contact with the upper end of the second opening area, and the spring members receives upwardly acting forces from fuel elements. The spring member is thereby prevented from inclining with respect to flow of a coolant. Simultaneously, the upper end of the first coupling member contacts the upper end of the first opening area, and the spring member is stably held in a condition where it is aligned with the direction of the coolant flow. Also, since the axial distance from the lower end of the first opening area to the lower end of the second opening area is smaller than the axial distance from the lower end of the first coupling member to the lower end of the second coupling member, the lower end of the first coupling member does not come into contact with the lower end of the first opening area when the fuel element is inserted. Thus, the friction force produced during passage of the fuel member along the spring member is small and the fuel element can be inserted more easily.

    摘要翻译： 利用从第一开口区域的上端到第二开口区域的上端的轴向距离等于从第一联接构件的上端到第二联接构件的上端的轴向距离的布置， 当弹簧构件相对于圆形电池向上移动时，第二联接构件的上端与第二开口区域的上端接触，并且弹簧构件从燃料元件接收向上作用的力。 由此防止弹簧构件相对于冷却剂的流动而倾斜。 同时，第一联接构件的上端接触第一开口区域的上端，并且弹簧构件稳定地保持在与冷却剂流动的方向对准的状态。 此外，由于从第一开口区域的下端到第二开口区域的下端的轴向距离小于从第一联接构件的下端到第二联接构件的下端的轴向距离，所以 当燃料元件插入时，第一联接构件的下端不与第一开口区域的下端接触。 因此，燃料构件沿着弹簧构件的通过期间产生的摩擦力小，燃料元件能够更容易地插入。

    Fuel assembly
    5.
    发明授权
    Fuel assembly 失效
    燃油总成

    公开(公告)号：US5128098A

    公开(公告)日：1992-07-07

    申请号：US639256

    申请日：1991-01-09

    申请人： Shozo Nakamura ,  Tadashi Mizuno ,  Junjiro Nakajima ,  Yoshihiko Yanagi ,  Hajime Umehara ,  Tetsuo Yasuda ,  Akira Maru ,  Junichi Yamashita ,  Yuichiro Yoshimoto ,  Tatsuo Hayashi

    发明人： Shozo Nakamura ,  Tadashi Mizuno ,  Junjiro Nakajima ,  Yoshihiko Yanagi ,  Hajime Umehara ,  Tetsuo Yasuda ,  Akira Maru ,  Junichi Yamashita ,  Yuichiro Yoshimoto ,  Tatsuo Hayashi

    IPC分类号： G21C3/322

    CPC分类号： G21C3/322 ,  Y02E30/38

    摘要： A fuel assembly comprises a plurality of fuel rods, a lower tie plate for supporting lower ends of the fuel rods, and a channel box surrounding a bundle of the fuel rods and the circumference of the lower tie plate to thereby define a cooling water leak passage between the lower tie plate and the channel box. The fuel assembly includes a venturi provided in the lower tie plate for generating a force tending to attract the channel box toward the lower tie plate under the action of a leak stream of the cooling water passing through the cooling water leak passage. The fuel assembly also includes an arrangement provided in the lower tie plate for suppressing vibrations of the channel box caused upon an influence of the venturi.

    摘要翻译： 燃料组件包括多个燃料棒，用于支撑燃料棒的下端的下连接板，以及围绕燃料棒束和下连接板的圆周的通道箱，从而限定冷却水泄漏通道 在下连接板和通道箱之间。 燃料组件包括设置在下连接板中的文氏管，用于在通过冷却水泄漏通道的冷却水的泄漏流的作用下产生倾向于将通道箱吸引到下连接板的力。 燃料组件还包括设置在下连接板中用于抑制文丘里管的影响引起的通道箱振动的装置。

    Fuel assembly and nuclear reactor
    6.
    发明授权
    Fuel assembly and nuclear reactor 失效
    燃料装配和核反应堆

    公开(公告)号：US5617456A

    公开(公告)日：1997-04-01

    申请号：US463828

    申请日：1995-06-05

    申请人： Hideki Kurosaki ,  Junjiro Nakajima ,  Hajime Umehara ,  Shozo Nakamura ,  Satoshi Kanno ,  Koji Nishida ,  Yasunori Bessho ,  Masahisa Inagaki ,  Osamu Yokomizo ,  Yuichiro Yoshimoto

    发明人： Hideki Kurosaki ,  Junjiro Nakajima ,  Hajime Umehara ,  Shozo Nakamura ,  Satoshi Kanno ,  Koji Nishida ,  Yasunori Bessho ,  Masahisa Inagaki ,  Osamu Yokomizo ,  Yuichiro Yoshimoto

    IPC分类号： G21C3/328 ,  G21C21/00

    CPC分类号： G21C3/328 ,  Y02E30/38

    摘要： The lower end of each of a plurality of fuel rods is supported by a fuel supporting portion of a lower tie plate. The fuel supporting portion includes a plurality of second coolant paths for supplying a coolant from below the fuel supporting portion to a first coolant path defined above the fuel supporting portion and between the fuel rods. The total cross-sectional area of all the second coolant paths is smaller than the cross-sectional area of the first coolant path. A water rod disposed between the fuel rods each includes an ascending tube path having therein a coolant ascending path having a coolant inlet port opening to a region below the fuel supporting portion, for guiding upward the coolant supplied through the coolant inlet port, and a descending tube having therein a coolant descending path having a coolant delivery port opening to said first coolant path, for guiding downward the coolant guided by said coolant ascending path and discharging the coolant through the coolant delivery port to the first coolant path. The descending tube path is so disposed outside the ascending tube path as to define a gap, through which the coolant inside the first coolant path flows, between it and the ascending tube path.

    摘要翻译： 多个燃料棒的每一个的下端由下连接板的燃料支撑部支撑。 燃料支撑部分包括多个第二冷却剂路径，用于将冷却剂从燃料支撑部分下方供应到限定在燃料支撑部分上方和燃料棒之间的第一冷却剂路径。 所有第二冷却剂通道的总截面积小于第一冷却剂通道的横截面面积。 设置在燃料棒之间的水杆各自包括上升管路，其中具有冷却剂上升路径，其具有通向燃料支撑部分下方的区域的冷却剂入口，用于向上引导通过冷却剂入口提供的冷却剂， 其中具有冷却剂下降路径，其具有通向所述第一冷却剂路径的冷却剂输送口，用于向下引导由所述冷却剂上升路径引导的冷却剂并将冷却剂通过冷却剂输送端口排出到第一冷却剂路径。 下降的管道设置在上升管道的外侧，以便限定第一冷却剂路径内的冷却剂在其与上升的管道之间流动的间隙。

    Zirconium based alloy of low irradiation growth, method of producing the same, and use of the same
    8.
    发明授权
    Zirconium based alloy of low irradiation growth, method of producing the same, and use of the same 失效
    低辐照生长的锆基合金及其制造方法及其用途

    公开(公告)号：US5862194A

    公开(公告)日：1999-01-19

    申请号：US814337

    申请日：1997-03-11

    申请人： Tadashi Fujieda ,  Masahisa Inagaki ,  Iwao Takase ,  Junjiro Nakajima ,  Rinichi Asano ,  Takehiro Seto

    发明人： Tadashi Fujieda ,  Masahisa Inagaki ,  Iwao Takase ,  Junjiro Nakajima ,  Rinichi Asano ,  Takehiro Seto

    IPC分类号： C22C16/00 ,  C22F1/18 ,  G21C3/07 ,  G21C3/324 ,  C22F1/16

    CPC分类号： C22C16/00 ,  C22F1/186 ,  G21C3/07 ,  G21Y2004/10 ,  Y02E30/40

    摘要： The present invention provides a zirconium based alloy member which has very small deformation of elongation and bow occurring due to irradiation growth, a method of manufacturing it, and particularly an channel box for an atomic reactor fuel assembly. A zirconium based alloy plate member having a width of not less than 100 mm and a long length, containing not more than 5 wt % Nb and/or not more 5 wt % Sn, the member having (0001) orientation (Fl value) of hexagonal Zr with respect to longitudinal direction ranging from 0.20 to 0.35, the difference in Fl between the middle and the end being not more than the value calculated from (0.0935.times.Fl-0.00585) and an amount of bow at neutron irradiation of 35 GWd/t which bow occurs in the channel box for a reactor being not more than 2.16 mm.

    摘要翻译： 本发明提供一种锆基合金构件，其由于照射生长而具有非常小的伸长变形和弓形，其制造方法，特别是用于原子反应堆燃料组件的通道箱。 一种宽度不小于100mm，长度不大于5重量％的Nb和/或不多于5重量％Sn的锆基合金板构件，具有（0001）取向（F1值）为 相对于纵向为0.20〜0.35的六方晶相，中间和末端之间的F1的差不大于由（0.0935xFl-0.00585）计算的值，中子照射下的弓的量为35GWd / t 在弯道出现弯道不大于2.16mm的反应堆。

    Fuel assembly
    9.
    发明授权
    Fuel assembly 失效
    燃油组件

    公开(公告)号：US5528641A

    公开(公告)日：1996-06-18

    申请号：US357261

    申请日：1994-12-13

    申请人： Kenichi Takeuchi ,  Koji Nishida ,  Yasunori Bessho ,  Yukihisa Fukasawa ,  Junjiro Nakajima

    发明人： Kenichi Takeuchi ,  Koji Nishida ,  Yasunori Bessho ,  Yukihisa Fukasawa ,  Junjiro Nakajima

    IPC分类号： G21C3/326 ,  G21C3/322 ,  G21C7/27 ,  G21C3/32

    CPC分类号： G21C3/322 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/302 ,  G21Y2004/403 ,  Y02E30/38

    摘要： A fuel assembly is provided with a coolant ascending path for making coolant rise and a water rod having a coolant descending path for conducting the coolant.A ratio of a flow area in a coolant inlet port of the smallest in coolant ascending path 13 on the downstream side than large diameter tube portion 3E to a flow area of the largest in the axial direction of coolant ascending path 13 in large diameter tube portion 3E is set to be 0.2-20%.In the normal operation, the declination degree from the liquid level in the coolant ascending path, corresponding to the coolant flow rate of the liquid level formed in the coolant ascending path can be controlled. Further, at the time of the excess the change speed of the liquid level can also be controlled.

    摘要翻译： 燃料组件设置有用于使冷却剂升起的冷却剂上升路径和具有用于导引冷却剂的冷却剂下降路径的水杆。 在大直径管部3E的下游侧的冷却剂上升路径13中的最小的冷却剂入口的流入面积与大径管部中的冷却剂上升路径13的轴向上最大的流动面积的比 3E设定为0.2〜20％。 在正常操作中，可以控制与冷却剂上升路径中形成的液面的冷却剂流量相对应的冷却剂上升路径中的液位的偏角度。 此外，在过量时，也可以控制液面的变化速度。