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. 发明申请

WO1997028535A1 NUCLEAR FUEL ASSEMBLY HAVING A TRANSITION PIECE WITH REDUCED FLOW RESISTANCE 审中-公开
标题翻译：具有降低流动阻力的过渡段的核燃料组件
公开(公告)号：WO1997028535A1
公开(公告)日：1997-08-07
申请号：PCT/US1996001275
申请日：1996-02-02
申请人： SIEMENS AKTIENGESELLSCHAFT , BARKHURST, David, J. , DRECKER, Stefan , MENGES, Dieter , MEIER, Werner , ALTER, Dietrich , EMMERT, Knut
发明人： SIEMENS AKTIENGESELLSCHAFT
IPC分类号： G21C03/322
CPC分类号： G21C5/06 , G21C3/322 , G21Y2002/201 , G21Y2002/304 , G21Y2004/302 , Y02E30/31 , Y02E30/38
摘要： In order to reduce the flow resistance of a coolant flowing through a passage (63) in the support plate (64) of a boiling water reactor and entering the transition piece (50) at the lower end of a fuel assembly resting on said support plate (64), the lower rim (60) of the transition piece (50) forms a conically tapered surface which fits into a corresponding conical counter-surface (62) at the upper edge of said passage (63). The lower rim (60) of the transition piece (50) forms a circular inlet which is concentric with the passage (63) and has a size equal or slightly larger than the passage opening. Fingers (70) protruding laterally into said opening and extending down into said passage (63) are used to center the low rim (60) within the passage (63). Additionally, the end caps (90) of the fuel rods may be stream-lined and the lower tie plate (53) of the fuel assembly may be spaced apart from the inner surface of a fuel channel (52) by a plurality of ribs (86) which form a plurality of peripheral through holes (86') on each of the four inner surfaces (84) of the rectangular fuel channel (52).
摘要翻译：为了降低流过沸水反应堆的支撑板（64）中的通道（63）的冷却剂的流动阻力，并进入位于所述支撑板上的燃料组件的下端的过渡件（50）（64）中，过渡件（50）的下边缘（60）形成锥形锥形表面，该锥形表面装配在所述通道（63）的上边缘处的对应锥形对置表面（62）中。过渡件（50）的下边缘（60）形成与通道（63）同心的圆形入口，其尺寸等于或稍大于通道开口。用于将侧边突出到所述开口并向下延伸到所述通道（63）中的手指70将所述低边缘（60）定位在所述通道（63）内。另外，燃料棒的端盖（90）可以是流线型的，并且燃料组件的下连接板（53）可以通过多个肋（...）与燃料通道（52）的内表面间隔开 86），其在矩形燃料通道（52）的四个内表面（84）中的每一个上形成多个周边通孔（86'）。

2. 发明申请

WO1994014993A1 MANUFACTURE OF MATERIALS AND WORKPIECES FOR COMPONENTS IN NUCLEAR PLANT APPLICATIONS 审中-公开
标题翻译：在核工厂应用中的组件的材料和工作的制造
公开(公告)号：WO1994014993A1
公开(公告)日：1994-07-07
申请号：PCT/US1992011261
申请日：1992-12-18
申请人： ELECTRIC POWER INSTITUTE, INC. , ALTER, Dietrich , DEWES, Peter , GARZAROLLI, Friedrich , HAHN, Roland , NELSON, J., Lawrence
发明人： ELECTRIC POWER INSTITUTE, INC.
IPC分类号： C22C38/48
CPC分类号： G21C3/06 , C21D6/004 , C22C38/48 , G21C7/08 , G21Y2002/104 , G21Y2004/10 , Y02E30/39
摘要： Austenitic steel intended for use in radiation areas of nuclear reactors is largely resistant to irradiation-induced stress corrosion cracking if its silicon, phosphorus and sulfur contents are reduced in relation to standard commercial steel quantities and its grain structure has finely dispersed carbide precipitation, particularly of niobium carbide. The finely dispersed distribution can be induced in that larger niobium precipitation takes place at annealing temperatures between 1100 and 1150 DEG C, and carbide is precipitated through the corresponding annealing at temperatures of approximately 750 DEG C.
摘要翻译：意图用于核反应堆辐射区域的奥氏体钢，如果其硅，磷和硫含量相对于标准商业钢量减少，则其辐射诱发的应力腐蚀开裂很大程度上受阻，并且其晶粒结构具有精细分散的碳化物沉淀，特别是碳化铌。可以诱导精细分散的分布，因为在1100和1150℃的退火温度下发生较大的铌沉淀，并且在约750℃的温度下通过相应的退火沉淀碳化物。

3. 发明申请

WO1994014992A1 MANUFACTURE OF MATERIALS AND WORKPIECES HAVING FINE GRAIN FOR COMPONENTS IN NUCLEAR PLANT APPLICATIONS 审中-公开
标题翻译：在核工厂应用中的组分的精细粒料的制造和制造
公开(公告)号：WO1994014992A1
公开(公告)日：1994-07-07
申请号：PCT/US1992011260
申请日：1992-12-18
申请人： ELECTRIC POWER RESEARCH INSTITUTE, INC. , ALTER, Dietrich , DEWES, Peter , GARZAROLLI, Friedrich , HAHN, Roland , NELSON, J., Lawrence
发明人： ELECTRIC POWER RESEARCH INSTITUTE, INC.
IPC分类号： C22C38/48
CPC分类号： C22C38/48 , C21D8/005 , G21C3/06 , G21C7/08 , G21Y2002/104 , G21Y2004/10 , Y02E30/39
摘要： Austenitic steel for components intended to be used in radiation zones of nuclear reactors is largely resistant to irradiation-induced stress crack corrosion if its silicon, phosphorus and sulfur content is reduced in relation to standard commercial steel quantities and its grain structure has an average grain diameter under approximately 20 mu m. The optimum grain structure is achieved when annealing is avoided at temperatures over 950 DEG C. When niobium is added as a carbide former leading to a fine dispersion of carbides, an increased resistance to irradiation induced stress corrosion cracking is still achievable when annealing temperatures under approximately 1075 DEG C are used.
摘要翻译：用于核反应堆辐射区域的组分的奥氏体钢，如果其硅，磷和硫含量相对于标准商业钢量减少，则辐射诱发的应力裂纹腐蚀很大程度上抵抗其晶粒结构具有平均晶粒直径约20亩以下。当在超过950℃的温度下避免退火时，实现最佳的晶粒结构。当将铌作为碳化物原位加入，导致碳化物的细分散时，当大约在退火温度下退火时，仍然可以获得增加的抗辐照诱发应力腐蚀开裂性 1075℃。

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