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公开(公告)号：US4770493A
公开(公告)日：1988-09-13
申请号：US833318
申请日：1986-02-24
申请人： Kuniaki Ara , Hiroshi Rindo , Koichiro Nakamoto , Takashi Tsumanuma , Sadao Chigira , Kazuo Sanada , Osamu Fukuda
发明人： Kuniaki Ara , Hiroshi Rindo , Koichiro Nakamoto , Takashi Tsumanuma , Sadao Chigira , Kazuo Sanada , Osamu Fukuda
CPC分类号： G02B6/06 , G02B6/4436
摘要： An optical fiber includes light-transmitting means comprising at least one optical fiber element, and a heat-resistant and radiation-resistant coating formed around the light-transmitting means. The coating comprises an inner buffer layer formed around the light-transmitting means and an outer layer of polyether ether ketone formed around the inner layer.
摘要翻译： 光纤包括包含至少一个光纤元件的光传输装置，以及形成在光传输装置周围的耐热和耐辐射涂层。 涂层包括围绕透光装置形成的内部缓冲层和围绕内层形成的聚醚醚酮的外层。
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公开(公告)号：US4380924A
公开(公告)日：1983-04-26
申请号：US254664
申请日：1981-04-16
申请人： Koichiro Nakamoto , Kiyokazu Ishii , Nobumi Ohyama
发明人： Koichiro Nakamoto , Kiyokazu Ishii , Nobumi Ohyama
IPC分类号： G01F1/708 , G01F1/00 , G01F1/56 , G01F1/58 , G01F1/712 , G01F1/74 , G01P5/08 , G01P5/18 , G21C17/032 , G01N27/74
摘要： A method for monitoring flow condition of a liquid metal which employs a detector consisting of an excitation coil applied with an a.c. current and at least two detection coils disposed on both sides of said excitation coil. The detector is disposed in the flowing direction of the liquid metal and a peak point of the cross-correlation function of fluctuation signals occurring in said detection coils is examined. By detecting the moving direction, the polarity and the magnitude of the peak point, the flow condition can be comprehensively ascertained, such as a change in flow velocity, a change in void fraction, the presence of voids and transit velocity of void.
摘要翻译： 一种用于监测液态金属的流动状态的方法，该方法采用由施加有交流电的励磁线圈组成的检测器。 电流和至少两个设置在所述励磁线圈两侧的检测线圈。 检测器沿着液态金属的流动方向设置，并且检查在所述检测线圈中发生的波动信号的互相关函数的峰值点。 通过检测移动方向，峰值的极性和大小，可以综合确定流速的变化，空隙率的变化，空隙的存在和空隙的转移速度等的流动状态。
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公开(公告)号：US4144741A
公开(公告)日：1979-03-20
申请号：US782238
申请日：1977-03-28
摘要： A detector to be inserted into a flowing conductive fluid, e.g. sodium coolant in a nuclear reactor, comprising at least one exciting coil to receive an a-c signal applied thereto and two detecting coils located in the proximity of the exciting coil. The difference and/or the sum of the output signals of the detecting coils is computed to produce a flow velocity signal and/or a temperature-responsive signal for the fluid. Such flow velocity signal or temperature signal is rectified synchronously by a signal the phase of which is shifted substantially .+-. 90.degree. with respect to the flow velocity signal or temperature signal, thereby enabling the device to detect voids in the flowing fluid without adverse effects from flow velocity variations or flow disturbances occurring in the fluid.
摘要翻译： 插入流动的导电流体的检测器，例如 包括至少一个用于接收施加到其上的a-c信号的励磁线圈和位于励磁线圈附近的两个检测线圈的核反应堆中的钠冷却剂。 计算检测线圈的输出信号的差值和/或总和，以产生用于流体的流速信号和/或温度响应信号。 这样的流速信号或温度信号通过相位相对于流速信号或温度信号基本上+/- 90°的信号同步整流，从而使得该装置能够检测流动流体中的空隙，而不会产生不利影响 来自流体中流速变化或流动扰动。
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