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6 条记录 (耗时 0.016 秒)

    LOWER TUBE SOCKET AND LIGHT-WATER REACTOR FUEL ASSEMBLY
    1.
    发明公开
    LOWER TUBE SOCKET AND LIGHT-WATER REACTOR FUEL ASSEMBLY 审中-公开
    MUFFEFÜRUNTERES ROHR UND LEI​​CHTWASSERREAKTOR-BRENNSTABBÜNDEL

    公开(公告)号：EP3086324A1

    公开(公告)日：2016-10-26

    申请号：EP13899373.8

    申请日：2013-12-20

    申请人： China Nuclear Power Technology Research Institute ,  China Guangdong Nuclear Power Holding Co., Ltd.

    发明人： YU, Wenchi ,  LI, Weicai ,  HU, Haixiang ,  WANG, Jiayuan

    IPC分类号： G21C3/32

    CPC分类号： G21C3/3206 ,  G21C3/32 ,  G21C3/3305 ,  G21Y2002/104 ,  G21Y2002/303 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/40

    摘要： A bottom nozzle (100) includes a skirt (10), support blocks (20), transverse blades (30) and longitudinal blades (40). The skirt (10) is a hollow structure and a bottom thereof is provided with corner legs (11) which are protruded downwards, a cavity is defined in the hollow structure, the transverse blades (30) are configured in the cavity, the longitudinal blades (40) are configured in the cavity, the transverse blades (30) and longitudinal blades (40) are firmly connected with the skirt (10), projections of the transverse blades (30) and the longitudinal blades (40) in a level plane are intersectant to form interleaved grids, and the support blocks (20) run through and are fixed on the transverse blades (30) and the longitudinal blades (40). In such a way, the bottom nozzle (100) forms a three-dimensional gridded water passage, thereby improving the filter capacity and generating small water pressure drop.

    摘要翻译： 底部喷嘴（100）包括裙部（10），支撑块（20），横向叶片（30）和纵向叶片（40）。 裙部（10）是中空结构，其底部设置有向下突出的角部支脚（11），在中空结构中限定空腔，横向叶片（30）构造在空腔中，纵向叶片 （40）构造在空腔中，横向叶片（30）和纵向叶片（40）与裙部（10）牢固地连接，横向叶片（30）和纵向叶片（40）的突起处于水平面 相交以形成交错的格栅，并且支撑块（20）穿过并固定在横向叶片（30）和纵向叶片（40）上。 以这种方式，底部喷嘴（100）形成三维网格水通道，从而提高过滤能力并产生小的水压降。

    BOTTOM NOZZLE FILTER DEVICE AND DEBRIS-RESISTANT BOTTOM NOZZLE USING THE DEVICE
    2.
    发明公开
    BOTTOM NOZZLE FILTER DEVICE AND DEBRIS-RESISTANT BOTTOM NOZZLE USING THE DEVICE 有权
    BOTTOM JETS过滤装置和存款耐磨地坪工具与此设备

    公开(公告)号：EP2642488A1

    公开(公告)日：2013-09-25

    申请号：EP11873994.5

    申请日：2011-10-14

    申请人： China Nuclear Power Technology Research Institute ,  China Guangdong Nuclear Power Holding

    发明人： YU, Wenchi ,  LI, Weicai ,  ZHOU, Yuemin ,  LV, Xianfeng ,  GUO, Yan ,  LIU, Yuli

    IPC分类号： G21C3/30 ,  B01D35/02

    CPC分类号： G21C3/3206 ,  B01D29/03 ,  B01D35/02 ,  G21C3/322 ,  G21C3/3305 ,  Y02E30/38

    摘要： The present invention relates to a bottom nozzle filtering device and a debris-preventive bottom nozzle that can be used for a light water reactor (LWR) nuclear fuel assembly. The bottom nozzle filtering device includes a plurality of successively spliced unit plates; a through flow channel is formed between the spliced adjacent unit plates; the flow channel includes a plurality of spaced straight-section flow inlets, and a plurality of spaced straight-section flow outlets, as well as a flow subchannel communicating with the straight-section flow inlets and the straight-section flow outlets; the outlet section of each straight-section flow inlet in the middle splits respectively into two flow subchannels, and the inlet section of each straight-section flow outlet in the middle communicates respectively with the two flow subchannels. The flow direction of the coolant is controlled by the straight-section flow inlet, the straight-section flow outlet, the flow subchannel, etc. to prevent unnecessary eddies forming, making the pressure loss effectively controlled; after a large size debris is stopped, the flow enters the flow subchannel to be filtered again, realizing staged filtering, thus improving the filtering effect.

    CONTROL ROD ABSORBER ASSEMBLY, CONTROL ROD AND CONTROL ROD ASSEMBLY
    5.
    发明公开
    CONTROL ROD ABSORBER ASSEMBLY, CONTROL ROD AND CONTROL ROD ASSEMBLY 审中-公开

    公开(公告)号：EP4280227A1

    公开(公告)日：2023-11-22

    申请号：EP22748792.3

    申请日：2022-01-05

    申请人： China Nuclear Power Technology Research Institute Co., Ltd ,  China General Nuclear Power Corporation ,  China Nuclear Power Engineering Company Ltd. ,  CGN Power Co., Ltd.

    发明人： XUE, Zhe ,  PANG, Zhengzheng ,  LI, Weicai

    IPC分类号： G21C7/103 ,  G21C7/10 ,  G21C7/11

    摘要： A control rod absorber assembly (1), a control rod (3) and a control rod assembly. The control rod absorber assembly (1) comprises a first absorber (11), a second absorber (12) and a stress transmission assembly (13), wherein the stress transmission assembly (13) is arranged around the periphery of the second absorber (12) and forms a stress combination together with the second absorber (12), and a receding space (2) for accommodating the second absorber (12) when the second absorber expands in a radial direction is provided between the stress transmission assembly (13) and the periphery of the second absorber (12); and the first absorber (11) and the stress combination are configured to be mounted in a cladding tube (31) of a control rod (3), the first absorber (11) and the stress combination are arranged in an axial direction of the cladding tube (31),and the first absorber (11) is located above the stress combination and is configured for pressing the stress combination downwards. By arranging the stress transmission assembly (13), the second absorber (12) does not bear the action of gravity of the first absorber (11), so as to reduce compression creep of the second absorber (12); and when the second absorber (12) absorbs neutrons and expands in the radial direction, an expanded portion can be accommodated in a receding space (2), so as to prevent a cladding tube (31) from being damaged.