专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP0996954B1 A DEVICE FOR REMOVING A RADIOACTIVE DEPOSITION 失效
标题翻译：装置脱除放射性沉积物
公开(公告)号：EP0996954B1
公开(公告)日：2003-04-23
申请号：EP98923294.7
申请日：1998-05-20
申请人： ABB ATOM AB
发明人： ROSENGREN, Anders , IVARS, Roland , VON DER BURG, Lennart
IPC分类号： G21F9/28
CPC分类号： G21F9/005
摘要： A device for removing a radioactive deposition from a fuel assembly (1) in a nuclear plant comprises a container (2), arranged to accommodate the fuel assembly, first means (3, 4, 5), arranged to feed a fluid into and through the container (2), said fluid being provided to release the deposition from the fuel assembly (1) by means of abrasion and transport radioactive deposition material out of the container (2) and second means (6, 7) being arranged to receive the radioactive material transported out of the container (2) by the fluid. In the device, at least second means (6, 7) are arranged in a gamma -radiation-dampening medium.

2. 发明公开

EP1012852A1 NUCLEAR FUEL ASSEMBLY 失效
标题翻译： CURB RACE燃油机组
公开(公告)号：EP1012852A1
公开(公告)日：2000-06-28
申请号：EP97928608.5
申请日：1997-06-18
申请人： ABB ATOM AB
发明人： FREDIN, Bo , HELMERSSON, Sture , NYLUND, Olov
IPC分类号： G21C3/18
CPC分类号： G21C3/328 , G21C3/18 , G21Y2002/207 , G21Y2004/305 , Y02E30/38
摘要： The present invention relates to a fuel assembly with a substantially square cross section for a light-water reactor. The light-water reactor comprises a plurality of fuel rods (4) extending between a top tie plate (5) and a bottom tie plate (6). A fuel rod (4) comprises a cladding tube (7a) with a first and a second end which surround a column with fissionable material (7b). According to one aspect of the invention, at least one fuel rod (4) is provided with an axial gap (19) in the fissionable material (7b), such that fissionable material (7b) is arranged on both sides of the axial gap (19) in the fuel rod (4).

3. 发明授权

EP0795177B1 CONTROL OF COOLANT FLOW IN A NUCLEAR REACTOR 失效
标题翻译：控制冷却液流量核反应堆
公开(公告)号：EP0795177B1
公开(公告)日：1999-08-25
申请号：EP95922821.4
申请日：1995-06-02
申请人： ABB ATOM AB
发明人： NYLUND, Olov
IPC分类号： G21C3/322 , G21C3/34
CPC分类号： G21C3/322 , G21C3/34 , G21Y2002/201 , G21Y2004/302 , Y02E30/31 , Y02E30/32 , Y02E30/38
摘要： A method and a device for guiding a coolant flow in a light-water nuclear reactor. The guiding of the coolant flow is performed within a mixing cross section which comprises four orthogonally arranged sub-regions (1, 1a, 1c), in their turn comprising whole or parts of fuel assemblies (1). In each sub-region (1, 1a, 1c) there is arranged at least one level which comprises spacers (7) which are provided with flow control members (12) adapted such that the coolant is guided from one sub-region (1, 1a, 1c) to an adjacent sub-region (1, 1a, 1c), thus equalizing the enthalpy of the coolant in the mixing cross section.

4. 发明授权

EP0786781B1 Fuel assembly for a boiling water reactor 失效
标题翻译： Kernbrennstoffbundel用于沸水反应堆
公开(公告)号：EP0786781B1
公开(公告)日：1999-06-23
申请号：EP96203368.4
申请日：1996-11-28
申请人： ABB ATOM AB
发明人： Arnaldo, Mingo , Olov, Nylund , Bertil, Schölin
IPC分类号： G21C3/322
CPC分类号： G21C3/322 , G21Y2002/201 , G21Y2002/207 , G21Y2004/302 , Y02E30/31 , Y02E30/38

5. 发明公开

EP0906625A1 NUCLEAR FUEL ASSEMBLY 失效
标题翻译：核燃料组件
公开(公告)号：EP0906625A1
公开(公告)日：1999-04-07
申请号：EP97928569.0
申请日：1997-06-03
申请人： ABB ATOM AB
发明人： NYLUND, Olov
IPC分类号： G21C3
CPC分类号： G21C3/328 , G21Y2002/20 , G21Y2004/30 , Y02E30/31 , Y02E30/38
摘要： A fuel assembly for a boiling water reactor comprising a plurality of fuel units (3a, 3b, 3c, 3d), stacked on top of each other, each one comprising a top tie plate (5), a bottom tie plate (6) and a plurality of fuel rods (4a, 5b, 4c) arranged between the top tie plate and the bottom tie plate. The fuel units are surrounded by a fuel channel (9) with a substantially square cross section. At least some of the fuel units comprise fuel rods with different diameters and different fuel quantities. The fuel rods are adapted such that fuel quantity and lattice space are optimized laterally and axially in the fuel assembly.
摘要翻译：一种用于沸水反应堆的燃料组件，包括彼此堆叠的多个燃料单元（3a，3b，3c，3d），每个燃料单元包括顶部连接板（5），底部连接板（6）和多个燃料棒（4a，5b，4c）布置在顶部连接板和底部连接板之间。燃料单元被具有大致方形横截面的燃料通道（9）包围。至少一些燃料单元包括具有不同直径和不同燃料量的燃料棒。燃料棒适合于使得燃料量和晶格空间在燃料组件中横向和轴向优化。

6. 发明公开

EP0906624A1 NUCLEAR FUEL ASSEMBLY 失效
标题翻译：核燃料组件
公开(公告)号：EP0906624A1
公开(公告)日：1999-04-07
申请号：EP97928610.0
申请日：1997-06-18
申请人： ABB ATOM AB
发明人： NYLUND, Olov , SAHLIN, Thorbjörn
IPC分类号： G21C3
CPC分类号： G21C3/336 , G21Y2002/207 , G21Y2002/303 , G21Y2004/30 , Y02E30/40
摘要： The present invention relates to a fuel assembly for a pressurized-water nuclear reactor comprising a plurality of fuel units (3) stacked on top of each other, wherein each fuel unit (3) comprises fuel rods (4) extending between a bottom nozzle (5) and a top nozzle (6). A coolant is adapted, during operation, to flow upwards through the fuel assembly. The fuel assembly has a substantially square cross section and the fuel rods (4) are arranged in an orthogonal lattice. Further, support lugs (8) are adapted to support the fuel rods (4), in four directions, in the upper or lower end of a fuel unit (3) to ensure that a certain distance is maintained between the fuel rods (4).
摘要翻译：本发明涉及一种用于压水核反应堆的燃料组件，其包括彼此堆叠的多个燃料单元（3），其中每个燃料单元（3）包括燃料棒（4），所述燃料棒（4）在底部喷嘴 5）和顶部喷嘴（6）。在操作期间，冷却剂适于向上流过燃料组件。燃料组件具有基本上正方形的横截面，并且燃料棒（4）以正交格子排列。此外，支撑凸耳（8）适于在燃料单元（3）的上端或下端沿四个方向支撑燃料棒（4），以确保燃料棒（4）之间保持一定的距离，。

7. 发明公开

EP0873563A1 FUEL ASSEMBLY FOR A BOILING WATER REACTOR 失效
标题翻译：核燃料组件沸水反应堆
公开(公告)号：EP0873563A1
公开(公告)日：1998-10-28
申请号：EP96914483.0
申请日：1996-04-09
申请人： ABB ATOM AB
发明人： NYLUND, Olov
IPC分类号： G21C3
CPC分类号： G21C3/326 , G21C3/17 , G21Y2002/201 , G21Y2002/302 , G21Y2002/402 , G21Y2004/30 , Y02E30/31 , Y02E30/38
摘要： A fuel assembly for a boiling water reactor comprising a bottom tie plate (9), a top tie plate (8), a first and a second group of vertical fuel rods (6a, 6b), each one comprising a column of fuel pellets (7) surrounded by a cladding tube (14a, 14b). The second group of fuel rods (6b) has a shorter active length than the first group of fuel rods (6a). Both the first and the second group of fuel rods extend between the bottom tie plate and the top tie plate. The second group of fuel rods (6a) comprises a fission gas plenum (17) surrounded by a plenum tube (16) arranged above the cladding tube (14b). The main part of the plenum tube has a cross section area which is smaller than the cross section area of the cladding tube.

8. 发明公开

EP0871959A1 FUEL ASSEMBLY AND SPACER FOR A NUCLEAR REACTOR 失效
标题翻译：燃料棒包和座核反应堆
公开(公告)号：EP0871959A1
公开(公告)日：1998-10-21
申请号：EP95941952.0
申请日：1995-12-07
申请人： ABB ATOM AB
发明人： WOLFRAM, Dietmar
IPC分类号： G21C3
CPC分类号： G21C3/34 , G21C3/322 , G21Y2002/201 , G21Y2002/302 , G21Y2002/304 , G21Y2004/30 , G21Y2004/302 , Y02E30/38
摘要： The present invention relates to a spacer (7) comprising a plurality of cells (9) to retain and mutually fix, at a plurality of spacer levels, parallel, elongated elements (3, 8), extending through the cells, into a bundle in a fuel assembly for a nuclear reactor. A coolant is adapted to flow from below and upwards through the fuel assembly. Between the cells (9) of the spacer (7), secondary channels (10) are formed. The invention is characterized in that at least the majority of the spacer levels in the secondary channels (10) comprise at least two deflection members (14) which are axially spaced-apart in the direction of flow for guiding at least part of the coolant flow towards the fuel rods which are aranged close to the secondary channels (10).

9. 发明公开

EP0844620A3 A method and a device for nuclear fuel handling 失效
公开(公告)号：EP0844620A3
公开(公告)日：1998-06-03
申请号：EP97203615.6
申请日：1997-11-19
申请人： ABB ATOM AB
发明人： Hellmark, Sören , Norbäck, Jan
IPC分类号： G21C19/06 , G21C19/26
CPC分类号： G21C3/335 , G21Y2004/50 , Y02E30/40
摘要： The present invention relates to a method and a device for fuel handling in a nuclear power plant of pressurized-water type comprising at least one fuel assembly (1) with a top part (5) and a bottom part (6), in its turn comprising a plurality of fuel rods (2). The fuel handling comprises extracting the fuel rods (2) in their entirety, or parts thereof, from the substantially vertically arranged fuel assembly (1) from above, either through the top part (5) of the fuel assembly (1) or through the bottom part (6) thereof. The fuel rods (2) extracted from the fuel assembly (1) are arranged to be turnable through 180° around a transverse axis (t) by arranging them in a normally vertically arranged turnable rod magazine (16).

10. 发明授权

EP0730775B1 FUEL ASSEMBLY WITH GUIDE THIMBLES INCLUDING LOCKING ELEMENTS FOR A NUCLEAR REACTOR 失效
标题翻译：与锁定元素，导管燃料棒包以核反应堆
公开(公告)号：EP0730775B1
公开(公告)日：1998-05-06
申请号：EP95902361.5
申请日：1994-11-08
申请人： ABB ATOM AB
发明人： BERGLUND, Pontus
IPC分类号： G21C3/334
CPC分类号： G21C3/334 , G21Y2002/206 , G21Y2004/303 , Y02E30/40
摘要： A fuel assembly (1) for a nuclear reactor, comprising a number of parallel fuel rods (2) which are retained by means of spacer grids (3), arranged along the fuel rods (2), as well as guide thimbles (4), wherein the guide thimbles (4) are fixed to the spacer grids (3). The guide thimbles with associated fuel rods are further fixed between a top nozzle (5) and a bottom nozzle (6). In the top nozzle (5), through-holes (11) are arranged for connection to a top sleeve (8) joined to the upper end of the respective guide thimble (4). In the top sleeve (8), a first locking element (10) is arranged for cooperation with a second locking element (14) arranged for cooperation with a second locking element (14) arranged on a guide sleeve (12), which guide sleeve (12) is insertable through that hole (11) in the top nozzle (5) which corresponds to the respective top sleeve (8). The locking elements (10, 14) are interlocked in connected position by means of a locking sleeve (15) insertable into the guide sleeve (12). The locking sleeve (15) comprises a third locking element in the form of a through-opening (18) arranged in the wall, a corbelled-out portion (19) being arranged in the edge of the opening. The opening (18) imparts to the corbelled-out portion (19) resilient properties. The corbelled-out portion (9) is adapted, when the locking sleeve (15) is inserted into the guide sleeve (12), to cooperate with a fourth locking element in the form of an annular slot (21) arranged in the inner wall of the guide sleeve (12).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式