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1. 发明授权

US5253278A Fuel assembly, channel box, production method of channel box, and core of nuclear reactor 失效
标题翻译：燃料组件，通道箱，通道箱的生产方法和核反应堆的核心
公开(公告)号：US5253278A
公开(公告)日：1993-10-12
申请号：US705723
申请日：1991-05-24
申请人： Toru Kanazawa , Osamu Yokomizo , Shin-ichi Kashiwai , Akihito Orii , Koji Nishida , Tatsuo Hayashi , Junjiro Nakajima
发明人： Toru Kanazawa , Osamu Yokomizo , Shin-ichi Kashiwai , Akihito Orii , Koji Nishida , Tatsuo Hayashi , Junjiro Nakajima
IPC分类号： G21C3/324 , G21C3/33 , G21C3/332 , G21C5/18 , G21C21/00 , G21C3/32
CPC分类号： G21C3/324 , G21C3/332 , G21Y2002/303 , G21Y2004/30 , Y02E30/40
摘要： A fuel assembly included a plurality of fuel rods, fuel spacers for maintaining gaps between the fuel rods and a channel box. The channel box includes spacer support portions projecting inwardly from an inner surface of the channel box and supporting the fuel spacer in a transverse direction and creep deformation inhibition portions disposed at the lower end portion of the channel box and projecting inwardly. The distance between the spacer support portions disposed to oppose one another in a horizontal direction is smaller than the distance between the creep deformation inhibition portions opposing one another in the horizontal direction.

2. 发明授权

US5386440A Boiling water reactor 失效
标题翻译：沸水反应堆
公开(公告)号：US5386440A
公开(公告)日：1995-01-31
申请号：US675
申请日：1993-01-05
申请人： Shin-ichi Kashiwai , Osamu Yokomizo , Akihito Orii , Koji Nishida , Toru Kanazawa , Kumiaki Moriya
发明人： Shin-ichi Kashiwai , Osamu Yokomizo , Akihito Orii , Koji Nishida , Toru Kanazawa , Kumiaki Moriya
IPC分类号： G21C3/322 , G21C3/32
CPC分类号： G21C3/322 , G21Y2002/206 , G21Y2004/30 , G21Y2004/302 , Y02E30/31 , Y02E30/38
摘要： An object of the present invention is to provide a boiling water reactor wherein two phase flow instability in a fuel assembly occurs scarcely.A bottom flow path is formed beneath a partition plate which is supported by control rod driving mechanism housings in a reactor pressure vessel, and coolant guide tubes which open beneath the partition plate stands perpendicularly on the partition plate. An upper end portion of the coolant guide tube is restrained at outer periphery by a fixing portion of a square grid, and a coolant entrance of a fuel assembly is connected through to the coolant guide tube.Pressure loss of the coolant decreases and flow instability of the coolant in the fuel assembly occurs scarcely, lowering of a critical power ratio at a pump trip can be suppressed.
摘要翻译：本发明的目的是提供一种沸水反应器，其中几乎不发生燃料组件中的两相流不稳定性。在反应堆压力容器内由控制棒驱动机构壳体支撑的分隔板下方形成底部流路，并且在分隔板下方开口的冷却剂引导管垂直地放置在隔板上。冷却剂引导管的上端部通过方格栅的固定部分被限制在外周，并且燃料组件的冷却剂入口连接到冷却剂引导管。冷却剂的压力损失减少，并且几乎不发生燃料组件中的冷却剂的流动不稳定性，可以抑制泵脱扣时的临界功率比的降低。

3. 发明授权

US5112571A Fuel assembly and fuel spacer 失效
标题翻译：燃油组件和燃油间隔器
公开(公告)号：US5112571A
公开(公告)日：1992-05-12
申请号：US510192
申请日：1990-04-17
申请人： Akihito Orii , Osamu Yokomizo , Yasuhiro Masuhara , Koji Nishida , Shigeto Murata , Shin-ichi Kashiwai , Kotaro Inoue , Yuichiro Yoshimoto
发明人： Akihito Orii , Osamu Yokomizo , Yasuhiro Masuhara , Koji Nishida , Shigeto Murata , Shin-ichi Kashiwai , Kotaro Inoue , Yuichiro Yoshimoto
IPC分类号： G21C3/322 , G21C3/344
CPC分类号： G21C3/322 , G21C3/344 , Y02E30/38
摘要： In a fuel assembly having fuel rods inserted into regularly arranged cells of a fuel spacer which keeps the fuel rods correctly spaced from one another and has spacer elements disposed in a plurality of stages in the longitudinal direction of the fuel rods, the fuel spacer comprises vanes formed on the cells in such a manner that each vane is bent from a cut formed in a part of the side wall of the cell. The vanes obliquely project into the corresponding spaces between adjacent fuel rods and allow a coolant flowing through the spaces and forming two-phase flows to generate swirling flows toward the fuel rods. The fuel spacer may alternatively comprise either thin-walled cylinders having built-in vanes or spiral vanes, which are fixed to the spacer that has not been subjected to any direct machining. Also disclosed is a fuel assembly provided with any of the above-described fuel spacers. The arrangement of the present invention enables, while assuring a sufficient strength for maintaining fuel rods in their correct position, the transfer of heat from the fuel rods to the coolant to be promoted so as to raise the allowable power level of the fuel assembly, and enables the void ratio to be lowered so as to increase the reactivity.
摘要翻译：在具有插入燃料间隔件的规则布置的单元中的燃料棒的燃料组件中，燃料棒将燃料棒彼此正确地间隔开并具有沿着燃料棒的纵向设置成多级的间隔元件，燃料间隔件包括叶片形成在电池上，使得每个叶片从形成在电池的侧壁的一部分中的切口弯曲。叶片倾斜地突出到相邻燃料棒之间的相应空间中，并允许冷却剂流过空间并形成两相流以产生朝向燃料棒的旋流。燃料间隔器可以可选地包括具有内置叶片或螺旋叶片的薄壁圆柱体，其固定到未经受任何直接加工的间隔件。还公开了一种具有任何上述燃料间隔件的燃料组件。本发明的结构在确保足够的强度以保持燃料棒处于其正确位置的同时，能够将热量从燃料棒传递到冷却剂以提高燃料组件的允许功率水平，使空隙率降低，从而提高反应性。

4. 发明授权

US5023047A Nuclear reactor having an ascending cooling path much greater than the descending cooling path 失效
标题翻译：核反应堆具有比下降冷却路径大得多的上升冷却路径
公开(公告)号：US5023047A
公开(公告)日：1991-06-11
申请号：US284345
申请日：1988-12-14
申请人： Koji Nishida , Osamu Yokomizo , Yasuhiro Masuhara , Toshitsugu Nakao , Shin-ichi Kashiwai , Akio Tomiyama , Junichi Yamashita , Tatsuo Hayashi
发明人： Koji Nishida , Osamu Yokomizo , Yasuhiro Masuhara , Toshitsugu Nakao , Shin-ichi Kashiwai , Akio Tomiyama , Junichi Yamashita , Tatsuo Hayashi
IPC分类号： G21C3/328 , G21C7/26 , G21C7/32
CPC分类号： G21C3/328 , G21C7/26 , G21C7/32 , Y02E30/38 , Y02E30/39
摘要： A fuel assembly has a water rod which consists of a coolant ascending path and a coolant descending path, the coolant ascending path opening below a fuel support of a lower tie plate, the coolant descending path opening above the fuel support and adapted to guide downwardly the coolant that has flowed up the coolant ascending path to the upper portion of the water rod. The lateral cross section of the coolant ascending path is more than 25 times that of the coolant descending path.The nuclear reactor with these fuel assemblies loaded in the core is operated as follows. After startup of the reactor when the reactor power is low, all the control rods inserted in the core are withdrawn completely. Then, the reactor power is controlled by regulating a liquid level formed in the water rods. This reactor operation method prolongs the lifetime of the control rods, thereby reducing the number of times they have to be replaced.
摘要翻译：燃料组件具有由冷却剂上升路径和冷却剂下降路径组成的水杆，所述冷却剂上升通道在下部接合板的燃料支撑件下方开口，所述冷却剂下降通道在所述燃料支撑件上方开口并适于向下引导已经将冷却剂上升通道流到水杆上部的冷却剂。冷却剂上升路径的横截面大约是冷却剂下降路径的25倍。装载在核心中的这些燃料组件的核反应堆如下操作。当反应堆功率低时，反应堆启动后，插入核心的所有控制棒全部撤出。然后，通过调节在水棒中形成的液面来控制反应堆功率。该反应器操作方法延长了控制棒的寿命，从而减少了它们必须更换的次数。

5. 发明授权

US06278757B1 Fuel assembly and nuclear reactor 失效
标题翻译：燃料装配和核反应堆
公开(公告)号：US06278757B1
公开(公告)日：2001-08-21
申请号：US07974834
申请日：1992-11-16
申请人： Osamu Yokomizo , Yuichiro Yoshimoto , Yoshiyuki Kataoka , Shinichi Kashiwai , Yasuhiro Masuhara , Akio Tomiyama , Akihito Orii , Kotaro Inoue , Takaaki Mochida , Tatsuo Hayashi
发明人： Osamu Yokomizo , Yuichiro Yoshimoto , Yoshiyuki Kataoka , Shinichi Kashiwai , Yasuhiro Masuhara , Akio Tomiyama , Akihito Orii , Kotaro Inoue , Takaaki Mochida , Tatsuo Hayashi
IPC分类号： C21C726
CPC分类号： G21C3/322 , G21C3/328 , G21C2003/3225 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： A resistance member (e.g., fuel holding portion of the lower tie plate) is provided at the lower end of the fuel assembly. Provision is made of a coolant ascending path in which said water rods have coolant inlet ports that are open in a region lower than the resistance member to upwardly guide the coolant, and a coolant descending path which has a coolant delivery port that is open in a region higher than the resistance member to downwardly guide the coolant. The coolant ascending path and the coolant descending path are communicated with each other at their upper end portions.
摘要翻译：电阻构件（例如，下连接板的燃料保持部）设置在燃料组件的下端。设置有冷却剂上升路径，其中所述水杆具有在低于阻力构件的区域中开口的冷却剂入口端口，以向上引导冷却剂;以及冷却剂下降路径，其具有在区域高于电阻构件以向下引导冷却剂。冷却剂上升路径和冷却剂下降路径在其上端部彼此连通。

6. 发明授权

US5640435A Fuel assembly and nuclear reactor 失效
公开(公告)号：US5640435A
公开(公告)日：1997-06-17
申请号：US214760
申请日：1994-03-18
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： G21C3/322 , G21C3/328 , G21C3/32 , G21C15/02
CPC分类号： G21C3/328 , G21C2003/3225 , G21Y2002/201 , G21Y2002/302 , G21Y2002/401 , G21Y2004/30 , G21Y2004/40 , 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.

7. 发明授权

US5617456A Fuel assembly and nuclear reactor 失效
标题翻译：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。

8. 发明授权

US07215729B1 Fuel assembly and nuclear reactor 失效
标题翻译：燃料装配和核反应堆
公开(公告)号：US07215729B1
公开(公告)日：2007-05-08
申请号：US08470424
申请日：1995-06-06
申请人： Osamu Yokomizo , Yuichiro Yoshimoto , Yoshiyuki Kataoka , Shinichi Kashiwai , Yasuhiro Masuhara , Akio Tomiyama , Akihito Orii , Kotaro Inoue , Takaaki Mochida , Tatsuo Hayashi
发明人： Osamu Yokomizo , Yuichiro Yoshimoto , Yoshiyuki Kataoka , Shinichi Kashiwai , Yasuhiro Masuhara , Akio Tomiyama , Akihito Orii , Kotaro Inoue , Takaaki Mochida , Tatsuo Hayashi
IPC分类号： G21C15/00 , G21C19/28
CPC分类号： G21C3/322 , G21Y2002/201 , G21Y2002/30 , G21Y2004/302 , G21Y2004/40 , Y02E30/38
摘要： A resistance member (e.g., fuel holding portion of the lower tie plate) is provided at the lower end of the fuel assembly. Provision is made of a coolant ascending path in which said water rods have coolant inlet ports that are open in a region lower than the resistance member to upwardly guide the coolant, and a coolant descending path which has a coolant delivery port that is open in a region higher than the resistance member to downwardly guide the coolant. The coolant ascending path and the coolant descending path are communicated with each other at their upper end portions.
摘要翻译：电阻构件（例如，下连接板的燃料保持部）设置在燃料组件的下端。设置有冷却剂上升路径，其中所述水杆具有在低于阻力构件的区域中开口的冷却剂入口端口，以向上引导冷却剂;以及冷却剂下降路径，其具有在区域高于电阻构件以向下引导冷却剂。冷却剂上升路径和冷却剂下降路径在其上端部彼此连通。

9. 发明授权

US4914679A Fuel assembly 失效
标题翻译：燃油组件
公开(公告)号：US4914679A
公开(公告)日：1990-04-03
申请号：US223639
申请日：1988-07-25
申请人： Akio Tomiyama , Osamu Yokomizo , Yasuhiro Masuhara , Toshitsugu Nakao , Shin-ichi Kashiwai , Yoshishige Kawada , Hiromasa Hirakawa , Shigeto Murata
发明人： Akio Tomiyama , Osamu Yokomizo , Yasuhiro Masuhara , Toshitsugu Nakao , Shin-ichi Kashiwai , Yoshishige Kawada , Hiromasa Hirakawa , Shigeto Murata
IPC分类号： G21C3/10 , G21C3/33
CPC分类号： G21C3/3315 , Y02E30/40
摘要： A fuel assembly according to the present invention is formed in such a manner that the small diameter portion of an upper end plug of a fuel rod is inserted into a boss of an upper tie-plate. The upper end plug includes a small diameter portion and a large diameter portion which is disposed below the former. An expansion spring in disposed in the small diameter portion of the upper end plug. A cover member surrounding this expansion spring is disposed in the large diameter portion of the upper end plug, and extends upwardly. Since the cover member surrounds the expansion spring, pressure loss caused by the expansion spring can be reduced.
摘要翻译：根据本发明的燃料组件形成为使得燃料棒的上端塞的小直径部分插入上连接板的凸台中。上端塞包括一个小直径部分和一个大直径部分，该部分设置在前者的下方。膨胀弹簧设置在上端塞的小直径部分中。围绕该膨胀弹簧的盖构件设置在上端塞的大直径部分中并向上延伸。由于盖构件围绕膨胀弹簧，所以可以减小由膨胀弹簧引起的压力损失。

10. 发明授权

US5432829A Fuel assembly and reactor core 失效
标题翻译：燃料组件和反应堆堆芯
公开(公告)号：US5432829A
公开(公告)日：1995-07-11
申请号：US996774
申请日：1992-12-23
申请人： Motoo Aoyama , Taro Ueki , Akinobu Nakajima , Yoko Ishibashi , Kunitoshi Kurihara , Osamu Yokomizo , Yasuhiro Masuhara , Junichi Yamashita , Yasunori Bessho , Junjiro Nakajima
发明人： Motoo Aoyama , Taro Ueki , Akinobu Nakajima , Yoko Ishibashi , Kunitoshi Kurihara , Osamu Yokomizo , Yasuhiro Masuhara , Junichi Yamashita , Yasunori Bessho , Junjiro Nakajima
IPC分类号： G21C3/326 , G21C3/328 , G21C3/32
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： A fuel assembly comprises fuel rods arrayed in a square lattice pattern of 10 rows and 10 columns, and three large-diameter water rods arranged along a diagonal line of the fuel assembly in such a region as able to accommodate 10 fuel rods. Partial length fuel rods are arranged in an outermost layer of the fuel rod array at fuel rod setting positions other than corners of the outermost layer. Ordinary fuel rods are arranged in a layer inside the outermost layer and adjacent to the outermost layer at positions adjacent to the partial length fuel rods in the outermost layer.The struction of the fuel assembly enables a reduction in the void coefficient and an improvement in the reactivity control capability. Also, the void coefficient can be reduced without lowering reactivity, and fuel economy is improved.
摘要翻译：燃料组件包括排列成10行10列的正方形格子图案的燃料棒和沿着能够容纳10个燃料棒的区域沿着燃料组件的对角线布置的三个大直径水棒。部分长度的燃料棒布置在燃料棒阵列的最外层的燃料棒设置位置，而不是最外层的角。普通燃料棒布置在最外层内的层中，并且与最外层中的部分长度燃料棒相邻的位置处邻近最外层。燃料组件的结构能够减小空隙系数并提高反应性控制能力。而且，可以降低空隙系数而不降低反应性，并且提高燃料经济性。

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