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公开(公告)号：US4627148A
公开(公告)日：1986-12-09
申请号：US679075
申请日：1984-12-06
CPC分类号： C22B34/14 , C22B9/228 , Y10T29/49927 , Y10T29/49991
摘要： A high-purity metal member is produced by charging raw material such as sponge zirconium into a cavity of a mold such as a hearth under a vacuum atmosphere; irradiating the material with electron beams to melt it at a limited area of the cavity while forming a molten metal pool and irradiating the pool with the electron beam thereby elevate the molten metal pool to evaporate away impurities therein; and shifting the mold relative to the electron beams to provide a high-purity metal member. The metal pool is limited in its size and irradiated high energy density electron beams so that the temperature is raised whereby the impurities are easily evaporated away. The mold may have an annular cavity. In case of high-purity sleeve formation, the electron beams are irradiated onto the raw material while rotating the mold so that melting and solidification appear in a circumferential direction to be repeated. The impurities are repeatedly exposed to the electron beams.
摘要翻译： 通过在真空气氛下将诸如海绵锆的原料装入诸如炉床的模具的空腔中来生产高纯金属构件; 用电子束照射材料以在空腔的有限区域熔化，同时形成熔融金属池并用电子束照射池，从而升高熔融金属池以蒸发其中的杂质; 并且相对于电子束移动模具以提供高纯度的金属构件。 金属池的尺寸受到限制，并且照射高能密度的电子束，使得温度升高，从而杂质容易蒸发掉。 模具可以具有环形空腔。 在高纯度套管形成的情况下，在旋转模具的同时将电子束照射到原料上，使得在圆周方向上出现熔化和凝固以重复。 杂质重复暴露于电子束。
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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
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.
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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
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。
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公开(公告)号：US4678521A
公开(公告)日：1987-07-07
申请号：US837557
申请日：1986-03-03
申请人： Toshimi Yoshida , Hideo Maki , Hajime Umehara , Tetsuo Yasuda , Isao Masaoka , Iwao Takase , Masahisa Inagaki , Ryutarou Jimbow , Keiichi Kuniya
发明人： Toshimi Yoshida , Hideo Maki , Hajime Umehara , Tetsuo Yasuda , Isao Masaoka , Iwao Takase , Masahisa Inagaki , Ryutarou Jimbow , Keiichi Kuniya
CPC分类号： C22F1/186 , Y10S376/90
摘要： In a process for producing a zirconium-based alloy in which after the zirconium-based alloy is subjected to hot plastic working, it is subjected to cold plastic working and then to annealing and these steps are repeated at least twice, the present invention provides a process for producing a zirconium-based alloy characterized in that after the alloy is subjected to solid solution treatment in which it is heated to a temperature within the range including the .alpha. phase and the .beta. phase of the alloy, or within the range of the .beta. phase and is then quenched, cold plastic working is effected at least twice.
摘要翻译： 在锆系合金的制造方法中，在对锆系合金进行热塑性加工后，对其进行冷塑性加工，然后进行退火，将这些工序重复至少2次，本发明提供 锆系合金的制造方法，其特征在于，在将合金进行固溶处理后，将其加热至包含合金的α相和β相的范围内的温度，或者在β 然后淬火，冷塑性加工至少进行两次。
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公开(公告)号：US4842814A
公开(公告)日：1989-06-27
申请号：US9477
申请日：1987-02-02
申请人： Iwao Takase , Masahisa Inagaki , Masayoshi Kanno , Toshimi Yoshida , Jiro Kuniya , Isao Masaoka , Tetsuo Yasuda , Hajime Umehara , Hideo Maki
发明人： Iwao Takase , Masahisa Inagaki , Masayoshi Kanno , Toshimi Yoshida , Jiro Kuniya , Isao Masaoka , Tetsuo Yasuda , Hajime Umehara , Hideo Maki
摘要： A channel box and/or a spacer of a fuel assembly is a welded construction and made of a Zr-Nb-Sn alloy comprising 0.5-2.2 wt % Nb, 0.5-1.5 wt % Sn contained so as to satisfy the relation of Sn(wt %) 22.times.Nb(wt %)--3.0, and balance Zr or a Zr-Nb-Sn-Mo alloy comprising 0.5-2.2 wt % Nb, 0.5-1.5 wt % Sn contained so as to satisfy the relation of Sn(wt %).gtoreq.2.times.Nb(wt %)--0.3, 0.1-0.8 wt % Mo, and balance Zr. The welded portion, its heat affected zone and the unwelded portion of the channel box and/or the spacer have substantially the whole equilibrium phase structure.
摘要翻译： 燃料组件的通道箱和/或间隔件是焊接结构，由包含0.5-2.2重量％Nb，0.5-1.5重量％Sn的Zr-Nb-Sn合金制成，以满足Sn（ 重量％）22×Nb（重量％）-3.0，余量包含0.5-2.2重量％Nb，0.5-1.5重量％Sn的Zr或Zr-Nb-Sn-Mo合金，以满足Sn（wt％）的关系， ）> / = 2xNb（wt％）-0.3,0.1-0.8wt％Mo，余量为Zr。 焊接部分，其热影响区和通道箱和/或间隔件的未焊接部分具有基本上全部的平衡相结构。
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公开(公告)号：US4689091A
公开(公告)日：1987-08-25
申请号：US704208
申请日：1985-02-22
申请人： Toshimi Yoshida , Hideo Maki , Hajime Umehara , Tetsuo Yasuda , Isao Masaoka , Iwao Takase , Masahisa Inagaki , Ryutarou Jimbow , Keiichi Kuniya
发明人： Toshimi Yoshida , Hideo Maki , Hajime Umehara , Tetsuo Yasuda , Isao Masaoka , Iwao Takase , Masahisa Inagaki , Ryutarou Jimbow , Keiichi Kuniya
CPC分类号： C22F1/186 , Y10S376/90
摘要： In a process for producing a zirconium-based alloy in which after the zirconium-based alloy is subjected to hot plastic working, it is subjected to cold plastic working and then to annealing and these steps are repeated at least twice, the present invention provides a process for producing a zirconium-based alloy characterized in that after the alloy is subjected to solid solution treatment in which it is heated to a temperature within the range including the .alpha. phase and the .beta. phase of the alloy, or within the range of the .beta. phase and is then quenched, cold plastic working is effected at least twice.
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7.发明授权
公开(公告)号：US5663502A
公开(公告)日：1997-09-02
申请号：US544932
申请日：1995-10-18
申请人： Yoshiaki Nagashima , Kenichi Fujiwara , Masao Sato , Fuminobu Takahashi , Masahiro Koike , Hajime Umehara , Yoshihiro Michiguchi
发明人： Yoshiaki Nagashima , Kenichi Fujiwara , Masao Sato , Fuminobu Takahashi , Masahiro Koike , Hajime Umehara , Yoshihiro Michiguchi
CPC分类号： G01N29/46 , G01B17/025 , G01N29/11 , G01N2291/014 , G01N2291/015 , G01N2291/0231 , G01N2291/02854 , G01N2291/0421 , G01N2291/0422 , G01N2291/0428 , G01N2291/044 , G01N2291/048
摘要： Ultrasonic waves from a transmit device are transmitted to an object subject to measurement. A surface reflected wave propagated in a contact medium and reflected at the surface of a tube and bottom surface reflected waves passing through an oxidation layer on the tube and reflected at the inner surface of the tube are convened into electric signals. A feature extracting part 5, in consideration of a correlation relationship of energy with respect to the frequency of a received signal, based on the received signal of ultrasonic waves converted to electric signals, extracts a signal feature data determined beforehand which has a strong correlation relationship with the thickness of a measured part. Based on the extracted signal feature data, a thickness conversion part references a relationship storage part which has stored therein beforehand a function that shows a relationship between the signal feature data and the thickness of the oxidation layer, and obtains the thickness of the oxidation layer.
摘要翻译： 来自发送装置的超声波被发送到被测物体。 在接触介质中传播并在管表面反射的表面反射波和底面反射通过管上的氧化层并在管的内表面反射的反射波被转换为电信号。 考虑到能量相对于接收信号的频率的相关关系的特征提取部分5，基于被转换为电信号的超声波的接收信号，提取预先确定的具有强相关关系的信号特征数据 具有测量部分的厚度。 基于所提取的信号特征数据，厚度转换部分参考预先存储在其中的信息特征数据与氧化层的厚度之间的关系的函数的关系存储部分，并获得氧化层的厚度。
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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
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。
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公开(公告)号：US5265139A
公开(公告)日：1993-11-23
申请号：US840939
申请日：1992-02-25
申请人： Yoshihiko Yanagi , Junjiro Nakajima , Kenji Kanamori , Hajime Umehara , Yasuhiro Aizawa , Toraki Sakuma , Hiromasa Hirakawa , Hideaki Ishizaki
发明人： Yoshihiko Yanagi , Junjiro Nakajima , Kenji Kanamori , Hajime Umehara , Yasuhiro Aizawa , Toraki Sakuma , Hiromasa Hirakawa , Hideaki Ishizaki
CPC分类号： G21C3/324 , G21Y2002/201 , G21Y2002/303 , G21Y2004/30 , Y02E30/40
摘要： A fuel assembly comprises a plurality of fuel rods supported by an upper tie plate and a lower tie plate respectively at each of upper end portion ad lower end portion, and a channel box surrounding a bundle of the fuel rods and the lower tie plate. The fuel assembly forms a natural uranium region at lower end portion of effective fuel length portion. A wall thickness at a lower thick wall region of the channel box is thicker than the wall thickness at a region disposed upwardly from the lower thick wall region and between corner portions of the channel box. An upper end of the lower thick wall region is disposed from an upper side of the lower tie plate and downwardly from an upper end of the natural uranium region. A wall thickness at the corner portion of the channel box is thicker than the wall thickness at a middle portion of the side wall between the corner positions at the region locating upward from the lower thick wall region. The fuel assembly is able to reduce stresses caused in the channel box during an earthquake, and, is able to improve fuel economy.
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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
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。
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