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    • 12. 发明公开
    • A method and a device for fuel handling
    • Verfahren und Einrichtung zur Handhabung von Brennstoff
    • EP0806777A1
    • 1997-11-12
    • EP97201230.6
    • 1997-04-24
    • ABB ATOM AB
    • Bäversten, BengtNyström, Karl-ErikRosengren, AndersSuvanto, Antti
    • G21C19/20
    • G21C19/20G21Y2002/202G21Y2002/402G21Y2004/40G21Y2004/503
    • The present invention relates to fuel handling comprising lifting of fuel assemblies (4) and/or control rods out of/into a reactor vessel (1) in a nuclear reactor. The reactor vessel (1) comprises a reactor core (5) with a plurality of fuel assemblies (4) and control rods (11). A fuel pool (3) is arranged adjacent the reactor vessel (1). A cassette (12, 18) comprising a plurality of storage positions for fuel assemblies (4) and/or control rods (11) is arranged near the reactor core (5), whereupon fuel assemblies (4) and/or control rods (11) are lifted out of the reactor core (5) and arranged in the cassette (12, 18). The cassette (12, 18) is then transported to the spent fuel pool (3) for temporary storage.
    • 本发明涉及燃料处理,包括将燃料组件(4)和/或控制棒从核反应堆中的反应器容器(1)中提出。 反应器容器(1)包括具有多个燃料组件(4)和控制杆(11)的反应堆堆芯(5)。 燃料池(3)布置在反应堆容器(1)的附近。 包括用于燃料组件(4)和/或控制杆(11)的多个存储位置的盒(12,18)布置在反应堆堆芯(5)附近,于是燃料组件(4)和/或控制棒(11 )从反应堆芯(5)中提出并且布置在盒(12,18)中。 然后,盒(12,18)被运送到废燃料池(3)用于临时存储。
    • 13. 发明公开
    • Fuel assembly for a boiling water reactor
    • Kernbrennstoffbundelfüreinen Siedewasserreaktor
    • EP0786781A1
    • 1997-07-30
    • EP96203368.4
    • 1996-11-28
    • ABB ATOM AB
    • Arnaldo, MingoOlov, NylundBertil, Schölin
    • G21C3/322
    • G21C3/322G21Y2002/201G21Y2002/207G21Y2004/302Y02E30/31Y02E30/38
    • A fuel assembly for a boiling water reactor comprising a first group of fuel rods (3a) which are of full-length design and which have a substantially constant cross-section area in their longitudinal direction, a second group of fuel rods (P) which consist of part-length fuel rods (3b) arranged in the lower part of the fuel assembly, or of fuel rods which in the upper part of the fuel assembly have a relatively smaller cross-section area and which in the lower part of the fuel assembly have a relatively larger cross-section area, and a fuel channel (2) surrounding the fuel rods and adapted for connection to a coolant intended to flow through the fuel assembly. The fuel assembly is so designed that, in its lower part, the flow resistance in the second group of fuel rods is greater than the flow resistance in the first group of fuel rods.
    • 一种用于沸水反应器的燃料组件,包括第一组燃料棒(3a),其全长设计并且在其纵向上具有基本上恒定的横截面面积;第二组燃料棒(P),其包括: 由布置在燃料组件的下部的部分长度的燃料棒(3b)或燃料棒的燃料组件的上部具有相对较小的横截面积并且在燃料的下部 组件具有相对较大的横截面面积,以及围绕燃料棒的燃料通道(2),并且适于连接到旨在流过燃料组件的冷却剂。 燃料组件被设计成在其下部中,第二组燃料棒中的流动阻力大于第一组燃料棒中的流动阻力。
    • 15. 发明公开
    • ZIRCONIUM ALLOY WITH TUNGSTEN AND NICKEL
    • 钨与镍的锆合金
    • EP0779936A1
    • 1997-06-25
    • EP95930099.0
    • 1995-07-27
    • COMBUSTION ENGINEERING, INC.ABB ATOM ABAB Sandvik SteelSANDVIK SPECIAL METALS CORP.Teledyne Wah Chang Albany
    • GARDE, Anand, M.RUDLING, PeterMIKES-LINDBACK, MirkaVANNEVIK, HannaBRADLEY, E., RossEUCKEN, Craig, M. Teledyne Wah Chang Albany
    • C22C16G21C3
    • G21C3/07C22C16/00G21Y2002/103G21Y2004/10Y02E30/40
    • A zirconium alloy including tin (Sn) in a range of greater than 0.005 wt.% to less than 1.0 wt.%, preferably with a lower limit greater than 0.1 wt.% to an upper limit of less than 0.7 wt.%, and most preferably with a lower limit of greater than 0.3 wt.% to an upper limit of less than 0.5 wt.%; iron (Fe) in a range of greater than 0.05 wt.% to less than about 1.0 wt.%, preferably with a lower limit of greater than 0.2 wt.% to an upper limit of greater than 0.5 wt.%, and most preferably with a lower limit of greater than 0.3 wt.% to an upper limit of less than 0.4 wt.%; chromium (Cr) in a range of greater than 0.02 wt.% to less than 1.0 wt.%, preferably with a lower limit of greater than 0.05 wt.% to an upper limit of less than 0.5 wt.%, and most preferably with a lower limit of greater than 0.1 wt.% to an upper limit of less than 0.2 wt.%; silicon in a range of greater than 50 to less than 300 parts per million (ppm), preferably in a range of greater than 70 to about 200 ppm, and most preferably in a range of greater than 90 to about 150 ppm; tungsten (W) in a range of greater than 0.01 wt.% to less than 1.0 wt.%, preferably with a lower limit of greater than 0.1 wt.% to an upper limit of less than 0.7 wt.%, and most preferably with a lower limit of greater than 0.2 wt.% to an upper limit of about less than 0.5 wt.%; nickel (Ni) in a range of greater than 0.007 wt.% and less than about 0.3 wt.%, preferably with a lower limit of greater than 0.05 wt.% to an upper limit of less than about 0.2 wt.%, and most preferably with a lower limit of greater than 0.08 wt.% to an upper limit of less than about 0.1 wt.%, with the balance zirconium.
    • 包含大于0.005重量%至小于1.0重量%,优选大于0.1重量%的下限和小于0.7重量%的上限的锡(Sn)的锆合金,以及 最优选具有大于0.3重量%的下限至小于0.5重量%的上限; 铁(Fe)的含量在大于0.05重量%至小于约1.0重量%的范围内,优选下限大于0.2重量%至上限大于0.5重量%,并且最优选 具有大于0.3重量%的下限至小于0.4重量%的上限; 铬(Cr)的含量在大于0.02重量%至小于1.0重量%的范围内,优选大于0.05重量%的下限至小于0.5重量%的上限,并且最优选与 大于0.1重量%的下限至小于0.2重量%的上限; 大于50至小于300百万分之一(ppm),优选大于70至大约200ppm,最优选大于90至大约150ppm范围内的硅; 钨(W)的含量在大于0.01重量%至小于1.0重量%的范围内,优选大于0.1重量%的下限至小于0.7重量%的上限,并且最优选与 大于0.2重量%的下限至大约小于0.5重量%的上限; 大于0.007重量%且小于约0.3重量%的镍(Ni),优选大于0.05重量%的下限,小于约0.2重量%的上限,以及大部分 优选具有大于0.08重量%的下限至小于约0.1重量%的上限,其余为锆。
    • 18. 发明公开
    • SUPERVISION OF A NEUTRON DETECTOR IN A NUCLEAR REACTOR
    • 监测中子探测器在核反应堆
    • EP0763244A1
    • 1997-03-19
    • EP95922045.0
    • 1995-06-02
    • ABB ATOM AB
    • OCIECZEK, GrzegorzTIUSANEN, Mika
    • G21C17
    • G21C17/108G21Y2002/204G21Y2002/206G21Y2004/403Y10S706/915
    • A method for supervision of a neutron flux detector in a nuclear reactor comprising a plurality of neutron flux detectors. During a learning phase, connection weights of a neural network are determined, which network comprises at least one input layer (31) and one output layer (33). The input layer comprises a number of processing elements adapted to receive a number of input signals (S(t) - S(t-49Δt)), and the output layer comprises a number of process elements adapted to deliver a number of state signals (N1, N2, N3, N4). The determination of the connection weights is done by supplying to the network a plurality of sets of input signals with known state signals, by comparing the state signals calculated by the network with the known state signals, and by successively correcting the connection weights to reduce the deviation between the known and the calculated state signals. During a supervision phase the neural network is supplied with input signals corresponding to measured values at different times from the supervised detector, and based on the connection weights determined during the learning phase, the state signals are calculated. In dependence of the calculated state signals and the state signals of a number of selected reference detectors, it is determined whether the detector is defective.