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1. 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。

2. 发明授权

US4993454A Piping branch structure 失效
标题翻译：管道分支结构
公开(公告)号：US4993454A
公开(公告)日：1991-02-19
申请号：US925907
申请日：1986-11-03
申请人： Yasuhiro Masuhara , Osamu Yokomizo , Koichi Kotani , Shinichi Kashiwai , Iwao Yokoyama
发明人： Yasuhiro Masuhara , Osamu Yokomizo , Koichi Kotani , Shinichi Kashiwai , Iwao Yokoyama
IPC分类号： F16L41/08 , F16L41/02 , G21C15/22
CPC分类号： F16L41/021 , Y10T137/8593 , Y10T137/85938
摘要： A piping branch structure includes a branch pipe distributing an inflowing fluid to pipes in at least three directions, and one of the pipes face a direction of flow of the fluid, wherein a fluid inlet of one of the pipes protrudes into the branch pipe. By protruding a fluid inlet of a pipe which faces a direction of flow of the fluid into the branch pipe, the protruding pipe act as obstacles, thus no vortex is generated and the non-vortex flow state can be maintain. In case of piping of recirculating system of a reactor, an inner pipe, whose structure is integral with that of a riser pipe, is provided so that the inner pipe extends toward a master tube side in a cross branch pipe. The inner pipe is provided holes and a flow-regulating plate. The quantity of cooling water circulating through the core of the reactor and the flow state of the cooling water in the pressure vessel are stabilized and balanced.
摘要翻译：管道分支结构包括：分支管道，其至少在三个方向上将流入流体分配给管道，并且一个管道面对流体的流动方向，其中一个管道的流体入口突出到分支管中。通过将与流体的流动方向相对的管的流体入口突出到分支管中，突出管作为障碍物，因此不会产生涡流，并且可以维持非涡流状态。在反应堆的再循环系统的配管的情况下，设置与管道整体结构一体的内管，使内管在横支管中向主管侧延伸。内管设有孔和流量调节板。通过反应器的核心循环的冷却水的量和压力容器中的冷却水的流动状态被稳定和平衡。

3. 发明授权

US4663116A Nuclear reactor 失效
标题翻译：核反应堆
公开(公告)号：US4663116A
公开(公告)日：1987-05-05
申请号：US528740
申请日：1983-09-01
申请人： Yasuhiro Masuhara , Motoaki Utamura , Shinichi Kashiwai , Iwao Yokoyama , Shigeto Murata , Toshitsugu Nakao , Yuichiro Maeda
发明人： Yasuhiro Masuhara , Motoaki Utamura , Shinichi Kashiwai , Iwao Yokoyama , Shigeto Murata , Toshitsugu Nakao , Yuichiro Maeda
IPC分类号： G21C15/02 , F04D29/44 , G21C1/08 , G21C9/00 , G21C13/10 , G21C15/18 , G21C19/307
CPC分类号： G21C9/00 , G21C1/08 , Y02E30/40
摘要： A nuclear reactor is equipped with a cooling water circulation system which includes a water-feed conduit and a drain conduit to circulate the cooling water to and from a pressure vessel which surrounds a reactor core, the cooling water having a free liquid level maintained above the reactor core. The drain conduit is inserted in the pressure vessel from the upper side toward the lower side relative to the free liquid level. A double tube consisting of an inner tube and an outer tube maintaining a gap therebetween is formed in the end portion of the drain conduit. The inner tube and outer tube being continuous with the drain conduit, the opening at the lower end of the inner tube is located below said free liquid level but above the reactor core. The opening at the upper end of the outer tube is located above the free liquid level. The opening at the lower end of said outer tube is located below the reactor core.
摘要翻译：核反应堆装备有冷却水循环系统，该系统包括供水管道和排水管道，以将冷却水循环到围绕反应堆堆芯的压力容器上，冷却水的自由液面维持在反应堆核心。排水管相对于自由液面从上侧向下侧插入压力容器中。在排水管道的端部形成有由内管和保持间隙的外管组成的双管。内管和外管与排水管连接，内管下端的开口位于所述自由液面之下但位于反应堆芯上方。外管上端的开口位于自由液位之上。所述外管下端的开口位于反应堆芯下方。

4. 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。

5. 发明授权

US5513233A Nuclear reactor 失效
标题翻译：核反应堆
公开(公告)号：US5513233A
公开(公告)日：1996-04-30
申请号：US272117
申请日：1994-07-07
申请人： Masataka Hidaka , Shinichi Kashiwai , Yoshinori Saito , Terufumi Kawasaki
发明人： Masataka Hidaka , Shinichi Kashiwai , Yoshinori Saito , Terufumi Kawasaki
IPC分类号： G21C15/02 , G21C15/00 , G21C3/322
CPC分类号： G21C15/02 , G21Y2002/201 , G21Y2004/302 , Y02E30/40
摘要： Improved operability and economy of a nuclear reactor can be obtained by attaining a mixing of the flows of coolant in the lower plenum of the fuel assemblies of the nuclear reactor, a high flow stability of the two-phase flow in the fuel assemblies and a small pressure loss in the core. To achieve this, there is provided a coolant guide tube 60 that communicates with the inside of the fuel support piece 12 inserted in the control rod guide tube and the passage 16, wherein there is formed a coolant guide passage 61 along which coolant descends in the area outside of the coolant guide tube in the fuel assemblies from opening 79. The coolant guide passage along which the coolant descends from the opening is formed in an area outside of the coolant guide tube in the fuel support piece.
摘要翻译：通过实现核反应堆的燃料组件的下部气室中的冷却剂流的混合，燃料组件中的两相流的高流动稳定性和小的燃料组件的小流量混合，可以获得核反应堆的可操作性和经济性的改善核心压力损失。为了实现这一点，提供了一种冷却剂引导管60，其与插入控制棒导管和通道16中的燃料支撑件12的内部连通，其中形成有冷却剂引导通道61，冷却剂引导管燃料组件中的冷却剂引导管外部的开口79.冷却剂引导通道在冷却剂引导管的外侧形成在燃料支撑件的冷却剂导管的外侧。

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