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    • 71. 发明公开
    • EXCORE NUCLEAR INSTRUMENTATION DEVICE
    • EXCORE核仪器设备
    • EP3188193A1
    • 2017-07-05
    • EP14900613.2
    • 2014-08-29
    • Mitsubishi Electric Corporation
    • TSUDA HiroyukiSAITO Atsushi
    • G21C17/10G21C17/108H03G3/30
    • G21C17/108G01N23/005G01N2223/304G01T1/17G01T3/00H03G1/0088
    • A detector signal processing circuit comprises a current/voltage converting unit (21) which converts the current value, which is converted by a neutron detector (3), to a voltage value which corresponds to the current value; a variable gain amplifying unit (22) which includes an operating amplifier, in which a D/A converter is added, and amplifies the voltage value which is converted by the current/voltage converting unit (21); a regulation control means (26 to 28) which regulates a gain of the D/A converter; and a comparator (29) which automatically compares an output voltage, which is amplified by the variable gain amplifying unit (22), in accordance with a reference value which is previously set, so as to output the output voltage to the regulation control means (26 to 28).
    • 检测器信号处理电路包括电流/电压转换单元(21),其将由中子检测器(3)转换的电流值转换成与电流值对应的电压值; 包括运算放大器的可变增益放大单元(22),其中添加了D / A转换器并放大由电流/电压转换单元(21)转换的电压值; 调节控制装置(26至28),其调节D / A转换器的增益; 以及比较器(29),其根据预先设定的基准值自动地比较由可变增益放大单元(22)放大的输出电压,以便将输出电压输出到调节控制装置( 26至28)。
    • 78. 发明公开
    • METHOD OF CALIBRATING EXCORE DETECTORS IN A NUCLEAR REACTOR
    • EEREM KERNREAKTOR的VERFAHREN ZUR KALIBRIERUNG VON EXCORE-DETEKTOREN
    • EP2564393A1
    • 2013-03-06
    • EP11775431.7
    • 2011-04-14
    • Westinghouse Electric Company LLC
    • KRIEG, David, Jerome
    • G21C17/108
    • G21C17/108G21D3/001G21D3/08Y02E30/40
    • A method of calibrating excore detectors for a pressurized water reactor (PWR) (1) includes: measuring peripheral core flux signals using excore detectors (33) disposed at a plurality of locations spaced about the periphery of the core (9), and using the measured power distribution from either a core monitoring system (43) or in-core flux measurement (69). Calibration of the excore detectors (33) is broken into two parts: (1) the relation between the excore detector signal and weighted peripheral assembly axial offset, and (2) the relation between weighted peripheral assembly axial offset and core average axial offset. Relation (2) can be determined by a representative neutronics model. Accuracy of the neutronics solution is improved by applying (83) nodal calibration factors, which represent the ratio of the measured three-dimensional power distribution (75) to the nodal predicted three- dimensional power distribution and correct the neutronic results to match what would be measured if predictive scenarios were actually performed in the actual reactor core (9)·
    • 用于校准压水反应堆(PWR)的检测器的方法包括:使用设置在围绕芯周边隔开的多个位置处的检测器来测量外围核心磁通信号,并使用来自核心监控系统 或核心内磁通测量。 探测器的校准分为两部分:(1)探测器信号与加权外围组件轴向偏移之间的关系,(2)加权外围组件轴向偏移与芯轴平均轴向偏移之间的关系。 关系(2)可以通过代表性的中子模型来确定。 通过应用节点校准因子来提高中子解决方案的准确度,这些因子表示测量的三维功率分布与节点预测的三维功率分布的比值,并校正中子结果以匹配如果预测情景实际上将被测量 在实际的反应堆堆芯中进行。