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1. 发明专利

JPS6141940A Detection of fluid leak position 失效
标题翻译：检测流体泄漏位置
公开(公告)号：JPS6141940A
公开(公告)日：1986-02-28
申请号：JP16334584
申请日：1984-08-02
申请人： Power Reactor & Nuclear Fuel Dev Corp
发明人： MOCHIZUKI HIROYASU , SHIBA HIROMICHI , UCHIKAWA SUNAO , WATANABE KANEHIDE
IPC分类号： G01M3/24
CPC分类号： G01M3/243
摘要： PURPOSE:To detect a leak position of fluid speedily and accurately by calculating an effective value of sound pressure in plural frequency ranges and also calculating the ratios of effective values of sound pressure of respective frequency ranges to that of the whole frequency range. CONSTITUTION:A leak signal detected by an AE (Acoustic Emission) sensor 1a is amplified 2a and 3a and inputted to an arithmetic unit 7 through band-pass filters 4aa-4ak, effective voltmeters 5aa-5ak, and A/D converters 6aa-6ak. The filter 4aa allows a signal detected almost over the entire frequency range of an AE signal of about 0.01-1MHz to pass and the obtained signal is processed 7 to calculate the standardized effective value of sound pressure in the whole frequency range. Other filters 4ab-4ak have frequency ranges obtained by dividing the whole frequency range into (k-1) sections and effective values of sound pressure in their respective ranges are calculated 7. Then, the ratios of effective values of sound pressure of respective ranges to that in the whole range are compared to calculate the distance from the AE sensor to the leak position.
摘要翻译：目的：通过计算多个频率范围内的声压有效值，并且计算各频率范围的声压有效值与整个频率范围的比值，来快速准确地检测流体的泄漏位置。构成：由AE（声发射）传感器1a检测到的泄漏信号被放大2a和3a，并通过带通滤波器4aa-4ak，有效电压计5aa-5ak和A / D转换器6aa-6ak输入到运算单元7 。滤波器4aa允许几乎在大约0.01-1MHz的AE信号的整个频率范围上检测到的信号通过，并且获得的信号被处理7以计算整个频率范围内的声压的标准化有效值。其他滤波器4ab-4ak具有通过将整个频率范围分成（k-1）段获得的频率范围，并且计算其各自范围内的声压的有效值7.然后，各个范围的声压的有效值的比率将整个范围进行比较以计算从AE传感器到泄漏位置的距离。

2. 发明专利

JPS6166500A Capacitor type high-temperature resistant/radiation resistant microphone 失效
标题翻译：电容式耐高温/耐辐射麦克风
公开(公告)号：JPS6166500A
公开(公告)日：1986-04-05
申请号：JP18803284
申请日：1984-09-10
申请人： Akai Electric Co Ltd , Power Reactor & Nuclear Fuel Dev Corp
发明人： WATANABE KANEHIDE , SHIBA KIMITOMO , ARAI MIKIYA , YAMAGUCHI AKINARI , FUJIKI YASUO , FUJIMOTO RYOHEI
IPC分类号： H04R7/08 , H04R19/04
CPC分类号： H04R7/08 , H04R19/04
摘要： PURPOSE: To obtain a microphone which is highly sensitive and has an excellent frequency characteristic even at a high temperature by constituting a tension ring and electrode with metal having a low line expansion ratio and then constituting other composition parts with metal with a line expansion ratio larger than that of the former metal.
CONSTITUTION: All composition parts expand as temperature rises. A tension ring 10 pushes up a vibrating film 5 upward the upper surface of a vibrating film 1st fixed ring 4 to give a certain tension to the vibrating film 5. Here, since the metal with a line expantion ratio smaller than that of the vibrating film 1st fixed ring 4 is used, their expansions will not be similar, and the extension in the cylindrical direction of the tension ring 10 due to the rise in temperature is smaller that of the vibrating film 1st fixed ring 4. Thus the tensile force given to the vibrating film 5 by the tension ring 10 is smaller compared with at room temperature, and the extension of the vibrating film due to cleep together with the rise in temperature is also smaller.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了获得高灵敏度的麦克风，即使在高温下，通过构成具有低线膨胀率的金属的张力环和电极，然后用线膨胀率较大的金属构成其它组成部分，也可以获得极好的频率特性比以前的金属。构成：随着温度的升高，所有组成部分都会扩展。张力环10将振动膜5向上推动到振动膜第一固定环4的上表面，以向振动膜5施加一定的张力。这里，由于线膨胀比小于振动膜的金属使用第一固定环4，它们的膨胀将不相似，并且由于温度升高引起的张力环10的圆柱方向的延伸小于振动膜第一固定环4的伸长。因此，施加的张力由于张力环10的振动膜5与室温相比较小，因此随着温度的上升而与振动膜的延伸一起也越来越小。

3. 发明专利

JPS60210731A Noise inhibitor for piping leakage detector 失效
标题翻译：用于管道泄漏检测器的噪声抑制器
公开(公告)号：JPS60210731A
公开(公告)日：1985-10-23
申请号：JP6673084
申请日：1984-04-05
申请人： Power Reactor & Nuclear Fuel Dev Corp
发明人： MOCHIZUKI HIROYASU , SHIBA KIMIMICHI , WATANABE KANEHIDE , UCHIKAWA SUNAO
IPC分类号： F17D5/06 , G01M3/24
CPC分类号： G01M3/243
摘要： PURPOSE:To improve S/N ratio by forming an ultrasonic wave scattering body fixed on the surface of a piping between an ultrasonic sensor and a noise generation source through a clamp to inhibit ultrasonic waves as noise propagating through the surface thereof. CONSTITUTION:A water drum 3 is provided on a piping 2 between a reactor core and a recirculation pump 1 and an ultrasonic sensor 4, on the drum 3. The sensor 4 detects an ultrasonic wave of a released sound accompanied by a leakage 7 of a coolant at a rupture 6 which will occur at any portion of the piping 2 inadvertently to be inputted into a leakage detector 5. A noise inhibitor 8 is provided fixed at the portion of the piping close to the drum 3 between the sensor 4 and the pump 1. The device 8 is made up of a pair of split halves which are integrally fixed with bolts and nuts 11, 11... as clamping means. The inner surface 12 of the device 8 is made the same in the shape as the outer diameter of the piping 2 and concave grooves 13 are formed in such a manner as to be perpendicular to the direction of the axis thereof so that they will combine with convexes 14 relatively formed to create a scattering body 15. This can inhibit noises propagating through the surface of the piping 2 from the pump 1.
摘要翻译：目的：通过形成通过夹具固定在超声波传感器和噪声产生源之间的管道表面上的超声波散射体来抑制超声波作为通过其表面传播的噪声来提高S / N比。构成：水桶3设置在反应堆堆芯与再循环泵1之间的配管2和鼓3上的超声波传感器4之间。传感器4检测伴随着泄漏7的释放声音的超声波在管道2的任何部分将发生破裂6的冷却剂，无意中被输入到泄漏检测器5中。噪声抑制器8被固定在传感器4和泵之间靠近滚筒3的部分处装置8由一对分开的半部构成，其一体地固定有螺栓和螺母11,11，作为夹紧装置。装置8的内表面12被制成与管道2的外径相同的形状，并且凹槽13以与轴的方向垂直的方式形成，使得它们将与凸起14相对形成以产生散射体15.这可以抑制从泵1通过管道2的表面传播的噪声。

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