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公开(公告)号：US20160062386A1
公开(公告)日：2016-03-03
申请号：US14819773
申请日：2015-08-06
Applicant: Hitachi, Ltd.
Inventor： Satoshi ICHIMURA , Naoyuki KURITA , Naoya MIYAMOTO , Takahide MATSUO
IPC: G05F7/00
CPC classification number: G05F7/00
Abstract: A polyphase stationary induction electric apparatus includes an N-phase N-leg main magnetic path (where N is 3 or more); a main winding wound around each main leg; and a control magnetic flux generating unit that generates a control magnetic flux having a magnitude variable in a direction substantially orthogonal to any one of N-phase main magnetic fluxes at an intersection part of N main legs; the control magnetic flux generating unit controlling the magnitude of the control magnetic flux to make N-phase reactance variable.
Abstract translation: 多相固定感应电气设备包括N相N腿主磁路（N为3以上）。 每条主腿缠绕的主绕线; 以及控制磁通产生单元，其生成在与N个主支路的交叉部分的N相主磁通中的任何一个基本正交的方向上具有大小可变的控制磁通量; 所述控制磁通产生单元控制所述控制磁通量的大小以使N相电抗变化。
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公开(公告)号：US20200219646A1
公开(公告)日：2020-07-09
申请号：US16638005
申请日：2018-05-15
Applicant: Hitachi, Ltd.
Inventor： Satoshi ICHIMURA , Daigo KOMESU , Shinji FUJITA , Hiroshi MORITA , Li LU
Abstract: An object of the present invention is to provide a stationary induction electric apparatus that can improve insulating performance with a few additional structures. In the stationary induction electric apparatus comprising: an iron core 1; a low-voltage coil conductor 400 wound on the iron core; an insulator 3 enclosing the low-voltage coil conductor; and a high-voltage coil conductor 2 which is wound on the insulator and to which a voltage is applied from the outside, a first shield conductor 5 wound adjacent to the inner peripheral surface of the insulator, a second shield conductor 4 wound adjacent to the outer peripheral surface of the insulator, one end of the first shield conductor, and one end of the second shield conductor are electrically connected to any region of the high-voltage coil conductor.
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Patent Agency Ranking
公开(公告)号：US20160275699A1
公开(公告)日：2016-09-22
申请号：US15053294
申请日：2016-02-25
Applicant: Hitachi, Ltd.
Inventor： Li LU , Satoshi ICHIMURA , Tomohiro MORIYAMA , Jun NUKAGA , Toshiaki ROKUNOHE , Akira YAMAGISHI , Yasutomo SAITO
CPC classification number: G06T7/90 , G01V8/00 , G06T7/0004 , G06T7/136 , G06T2207/10024 , H04N9/045
Abstract: An oil leakage detector of the present invention includes an image processing unit wherein the image processing unit calculates the values of saturation and intensity of each pixel in the color image of the object after an ultra-violet light is irradiated thereon, draws an intensity-saturation characteristic line of the saturation expressed in an X-axis and the intensity expressed in a Y-axis, sets an upper limit and a lower limit of intensity of each saturation as a threshold value based on an area without oil adhesion on the surface of the object, and determines, in the intensity-saturation characteristic line, an area corresponding to a pixel group where the intensity exceeds the threshold value of the upper limit and a pixel group where the intensity falls below the threshold value of the lower limit, to be an oil leakage adhered area.
Abstract translation: 本发明的漏油检测器包括图像处理单元，其中，图像处理单元计算在紫外线照射之后物体的彩色图像中的每个像素的饱和度和强度值，绘制强度饱和度 以X轴表示的饱和特性曲线和Y轴表示的强度，以每个饱和度的强度的上限和下限为基准，基于在 并且在强度 - 饱和度特性线中确定与强度超过上限阈值的像素组相对应的区域和强度低于下限阈值的像素组， 漏油附着区域。
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公开(公告)号：US20180137652A1
公开(公告)日：2018-05-17
申请号：US15869508
申请日：2018-01-12
Applicant: Hitachi, Ltd.
Inventor： Li LU , Satoshi ICHIMURA , Tomohiro MORIYAMA , Jun NUKAGA , Toshiaki ROKUNOHE , Akira YAMAGISHI , Yasutomo SAITO
Abstract: An oil leakage detector of the present invention includes an image processing unit wherein the image processing unit calculates the values of saturation and intensity of each pixel in the color image of the object after an ultra-violet light is irradiated thereon, draws an intensity-saturation characteristic line of the saturation expressed in an X-axis and the intensity expressed in a Y-axis, sets an upper limit and a lower limit of intensity of each saturation as a threshold value based on an area without oil adhesion on the surface of the object, and determines, in the intensity-saturation characteristic line, an area corresponding to a pixel group where the intensity exceeds the threshold value of the upper limit and a pixel group where the intensity falls below the threshold value of the lower limit, to be an oil leakage adhered area.
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公开(公告)号：US20170016796A1
公开(公告)日：2017-01-19
申请号：US15205504
申请日：2016-07-08
Applicant: Hitachi, Ltd.
Inventor： Li LU , Satoshi ICHIMURA , Tomohiro MORIYAMA , Jun NUKAGA , Akira YAMAGISHI , Yasutomo SAITO
CPC classification number: G01M3/20 , G01M3/38 , G06T7/0004 , H04N5/2256 , H04N5/2351 , H04N5/2353 , H04N9/045
Abstract: There is provided a leakage oil detection system including: a measurement device that includes a light source that causes a measured object which includes a leakage oil attachment part to be irradiated with ultraviolet rays, and an imaging device that detects fluorescence emitted from the leakage oil attachment part which is irradiated with the ultraviolet rays, and performs imaging on the measured object; and an analysis device that includes a driving control unit that controls operations of the light source and the imaging device, a recording unit that records an imaged image of the measured object which is imaged by the imaging device, and an image processing unit that calls the imaged image which is recorded in the recording unit and performs an image process. The imaging device controls exposure according to an exposure control value provided in the imaging device, and the analysis device calls the imaged image which is recorded in the recording unit for the image processing unit, calculates brightness values of respective pixels in the imaged image, determines a maximum brightness value which has the largest value among the brightness values of the respective pixels, compares the maximum brightness value with a reference brightness value which is determined in advance, acquires the exposure control value of the imaging device, in which the nearest brightness value that is smaller than the reference brightness value is acquired, images the measured object again by the imaging device using the acquired exposure control value, transmits the acquired image to the image processing unit, and detects leakage oil by performing the image process by the image processing unit.
Abstract translation: 提供一种漏油检测系统，包括：测量装置，其包括使包含要用紫外线照射的泄漏油附着部的测量对象的光源，以及检测从漏油附件发出的荧光的成像装置 用紫外线照射的部分，对测量对象进行成像; 以及分析装置，其包括控制光源和成像装置的操作的驱动控制单元，记录由成像装置成像的被测量物体的成像图像的记录单元和调用该成像装置的图像处理单元 记录在记录单元中并进行图像处理的成像图像。 成像装置根据成像装置中提供的曝光控制值控制曝光，并且分析装置调用记录在图像处理单元的记录单元中的成像图像，计算成像图像中的各个像素的亮度值，确定 在各像素的亮度值中具有最大值的最大亮度值将最大亮度值与预先确定的参考亮度值进行比较，获取摄像装置的曝光控制值，其中最接近亮度值 小于参考亮度值，利用获取的曝光控制值，通过成像装置再次对被测量物体进行成像，将所获取的图像发送到图像处理单元，并通过图像处理执行图像处理来检测泄漏油 单元。
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公开(公告)号：US20170301454A1
公开(公告)日：2017-10-19
申请号：US15485855
申请日：2017-04-12
Applicant: HITACHI, LTD.
Inventor： Li LU , Kenichi KAWAMURA , Hiroshi MIYAO , Hiroshi MORITA , Satoshi ICHIMURA , Jun NUKAGA , Shinji FUJITA , Kohei YAMAGUCHI , Hideki OGATA , Masato SUZUKI
IPC: H01F27/28
CPC classification number: H01F27/289 , H01F27/2823 , H01F27/2871 , H01F27/2876 , H01F27/323
Abstract: A stationary induction electrical apparatus includes a disc winding having a structure in which a flow path for a cooling medium is provided between coils where a low voltage is generated between shield wires, an L-shaped insulation barrier is provided between coils where a high voltage is generated between the shield wires, a horizontal portion of the L-shaped insulation barrier is provided so as to closely contact an upper surface or a lower surface of the disc coil, a tip end portion in an axial direction of the L-shaped insulation barrier is provided so as to closely contact an inner surface of the disc coil which is adjacent to a pressboard insulation cylinder, and a height of the tip end portion in the axial direction is lower than a thickness of one coil.
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公开(公告)号：US20160042851A1
公开(公告)日：2016-02-11
申请号：US14686079
申请日：2015-04-14
Applicant: Hitachi, Ltd.
Inventor： Naoya MIYAMOTO , Satoshi ICHIMURA , Naoyuki KURITA
Abstract: An iron core is configured as a winding iron core block group that is obtained in such a manner that winding iron core blocks having rectangular cross-sections each of which is obtained by laminating magnetic metal ribbons with a predetermined width and which have plural widths and laminated thicknesses are arranged in the width direction of the magnetic metal ribbons. The laminated thickness of the winding iron core block located in the middle of the width direction of the magnetic metal ribbons is larger, and the cross-section of each iron core leg is configured substantially in a circular shape by centering the winding iron core blocks in the laminated direction of the magnetic metal ribbons. Upper and lower yokes are arranged in such a manner that the bottom faces of the winding iron core blocks are aligned, and an in-window support member supports the upper yoke on a plane.
Abstract translation: 铁芯被构造为绕铁芯块组，其以如下方式获得：卷绕铁芯块，其具有矩形横截面，每个铁芯块通过层叠具有预定宽度并且具有多个宽度的磁性金属带并且层压 厚度在磁性金属带的宽度方向上排列。 位于磁性金属带的宽度方向中间的卷绕铁芯块的层叠厚度较大，每个铁芯脚的横截面通过将绕组铁芯块定中心而构成为大致圆形 磁性金属带的层叠方向。 上轭铁和下轭架以这样一种方式排列，使得绕铁铁芯块的底面对准，并且窗口支撑构件在平面上支撑上轭。
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