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88 条记录 (耗时 0.016 秒)

    Charge detection and quantization
    71.
    发明授权
    Charge detection and quantization 有权

    公开(公告)号：US11796585B2

    公开(公告)日：2023-10-24

    申请号：US17199870

    申请日：2021-03-12

    申请人： Baker Hughes Holdings LLC

    发明人： Eugene Toyonari Yamamoto ,  Scot Alan Shermer ,  Andrew Walter Hutchinson

    IPC分类号： G01R31/52 ,  G01R31/12 ,  G01R31/16

    CPC分类号： G01R31/1272 ,  G01R31/16 ,  G01R31/52

    摘要： A method includes receiving an output signal from a conductive element configured within a dielectric material. The conductive element can have an input voltage applied thereto and the output signal can include a plurality of signal amplitudes indicative of electric charges discharged across a gap between the conductive element and the dielectric material in response to the applied input voltage. The method can also include determining charge characterization data and classifying a material and a geometry of the conductive element and/or the dielectric material. The classification can include an operational state of the conductive element and/or the dielectric material. Related systems, apparatuses, and non-transitory computer readable mediums are also described.

    Apparatus for testing dielectric breakdown voltage
    73.
    发明授权
    Apparatus for testing dielectric breakdown voltage 有权

    公开(公告)号：US09983255B2

    公开(公告)日：2018-05-29

    申请号：US15236812

    申请日：2016-08-15

    申请人： The Boeing Company

    发明人： Victor U. Ukwedeh ,  Zoey M. Henson ,  Dan Maddex

    IPC分类号： H01H31/12 ,  G01R31/16

    CPC分类号： G01R31/16 ,  G01R31/1263

    摘要： A test fixture for testing a material according to a particular test procedure. A metallic base and four non-conductive side panels are affixed along a periphery of the base to form an internal cavity, and a non-conductive top cover is hingedly connected to one side panel. A metallic bottom electrode has an upper surface for holding a test material and a lower portion installed into a first aperture in an upper surface of the base. A metallic top electrode has a lower portion with a lower surface for contacting the test material and an upper portion extending out of a cover aperture in the top cover when the lower surface is in contact with the test material. A voltage source is coupled to perform the testing via a terminal on the base and the upper portion of the top electrode.

    METHOD AND DEVICE FOR TESTING TEST OBJECTS FOR THE PRESENCE OF DAMAGE
    74.
    发明申请
    METHOD AND DEVICE FOR TESTING TEST OBJECTS FOR THE PRESENCE OF DAMAGE 审中-公开

    公开(公告)号：US20180100829A1

    公开(公告)日：2018-04-12

    申请号：US15557533

    申请日：2016-10-21

    申请人： INTRAVIS GMBH

    发明人： Klaus SCHÖNHOFF ,  Holger ZIRNING ,  Olaf KOZIESSA ,  Gerd FUHRMANN

    IPC分类号： G01N27/61

    CPC分类号： G01N27/61 ,  G01N27/92 ,  G01R31/16

    摘要： A method and a device for testing for the presence of micro-holes or microcracks in a bottom surface of test objects includes an upper electrode arranged above a transport level and a lower electrode arranged below the transport level. The magnitude of a test voltage generated by two voltage sources connected in series is controlled at the electrodes so that the test voltage is greater than or equal to the breakdown voltage between the electrodes in air, and smaller than the breakdown voltage through a test object without holes or cracks. The test voltage is controlled temporally and synchronously with the movement of the test objects, so that the test voltage is only applied when one of the test objects is located between the electrodes. A hole or crack is recognized by a breakdown to the discharge path between the electrodes.

    PARTIAL DISCHARGE SENSOR
    76.
    发明申请
    PARTIAL DISCHARGE SENSOR 有权
    部分放电传感器

    公开(公告)号：US20150285852A1

    公开(公告)日：2015-10-08

    申请号：US14420211

    申请日：2012-11-07

    申请人： Mitsubishi Electric Corporation

    发明人： Toru Fukasawa ,  Takashi Ito ,  Hiroaki Miyashita

    IPC分类号： G01R31/16 ,  G01R31/12

    CPC分类号： G01R31/16 ,  G01R31/1254 ,  G01R31/1272

    摘要： A partial discharge sensor includes: a first ground (1) that constitutes a closed space (3) to surround a high-voltage wire (2); and a cylindrical branch pipe (4) disposed at the first ground (1) to protrude to an outer space to house with a lid (8) a first metal container (6) having at least one hole through which gas can pass, and having a slit (12) formed on the side to the space (3); at one end of a coaxial wire (7) disposed in the container (6), an outer conductor (9) of the coaxial wire (7) is connected to the first metal container (6) at a portion near the center of the slit (12), and an inner conductor (10) of the coaxial wire (7) is connected to the first metal container (6) at an opposite portion to a position where the outer conductor (9) is connected across the slit (12).

    摘要翻译： 局部放电传感器包括：构成围绕高压电线（2）的封闭空间（3）的第一接地（1）; 以及设置在所述第一地面（1）处的圆柱形分支管（4），以突出到外部空间以与盖（8）一起容纳第一金属容器（6），所述第一金属容器（6）具有至少一个气体可以通过的孔，并且具有 形成在所述空间（3）的一侧的狭缝（12）; 在设置在容器（6）中的同轴线（7）的一端，同轴线（7）的外导体（9）在狭缝的中心附近的部分与第一金属容器（6）连接 （12），并且同轴线（7）的内导体（10）在与外导体（9）跨越狭缝（12）连接的位置的相对部分处连接到第一金属容器（6） 。

    APPARATUS AND METHOD FOR ANALYZING THE STATE OF OIL-FILLED ELECTRICAL DEVICES
    78.
    发明申请
    APPARATUS AND METHOD FOR ANALYZING THE STATE OF OIL-FILLED ELECTRICAL DEVICES 有权
    用于分析填充电气装置状态的装置和方法

    公开(公告)号：US20110291674A1

    公开(公告)日：2011-12-01

    申请号：US13142647

    申请日：2010-03-31

    申请人： Noboru Hosokawa

    发明人： Noboru Hosokawa

    IPC分类号： G01R27/26

    CPC分类号： H01F27/402 ,  G01R31/027 ,  G01R31/12 ,  G01R31/16 ,  H01F27/14 ,  H01F2027/404

    摘要： Provided is an apparatus for analyzing the state of oil-filled electrical devices. The apparatus simulates the state of an oil-filled electrical device in which copper wire wrapped in insulating paper is immersed in insulating oil. The apparatus for analyzing the state of oil-filled electrical devices includes a first paper-covered copper wire and a second paper-covered copper wire, which are adjacent to each other; a tank which holds the first and second paper-covered copper wires as well as insulating oil extracted from the oil-filled electrical device, thereby immersing the first and second paper-covered copper wires in the insulating oil; and a capacitance measurement unit which measures the capacitance between the first and second paper-covered copper wires. The first and second paper-covered copper wires includes copper wire and insulating paper wrapped therearound. The insulating paper wrapper around each copper wire includes the same material as the insulating paper in the oil-filled electrical device.

    摘要翻译： 提供了一种用于分析充油电气装置的状态的装置。 该装置模拟充填电气装置的状态，其中包裹绝缘纸的铜线浸入绝缘油中。 用于分析充油电气装置的状态的装置包括彼此相邻的第一纸包覆铜线和第二纸包覆铜线; 保持第一和第二纸覆铜线的罐，以及从填充油的电气装置中提取的绝缘油，从而将第一和第二纸覆铜线浸入绝缘油中; 以及电容测量单元，其测量第一和第二纸包覆铜线之间的电容。 第一和第二纸包铜线包括铜线和包裹在其上的绝缘纸。 每根铜线周围的绝缘纸包装材料与充油电气设备中的绝缘纸材料相同。

    High Voltage Liquid Dielectric Test Vessel
    79.
    发明申请
    High Voltage Liquid Dielectric Test Vessel 有权
    高压液体电介质试验容器

    公开(公告)号：US20110285413A1

    公开(公告)日：2011-11-24

    申请号：US12889605

    申请日：2010-09-24

    申请人： Simon Clark ,  Simon Haynes

    发明人： Simon Clark ,  Simon Haynes

    IPC分类号： G01R27/08

    CPC分类号： G01R31/16

    摘要： A test vessel assembly (10) comprises a central test vessel 12 defining a chamber 18 in which a sample to be tested may be stored. A pair of side adjustable electrodes 30, 30a is received in the chamber and immersed in the sample under test. A gap between the electrodes can be adjusted by respective electrode adjusting assemblies, each comprising a shaft 32 connected to a respective electrode, the shaft being moved in and out of the test vessel 12 by rotation of an associated adjusting wheel 60. In use, each electrode 30, 30a is electrically connected to a contact in an insulated horn of a test assembly via the respective shafts, for the supply of a steadily increasing voltage to determine the breakdown voltage of the sample. To prevent the breakdown in air rather than in the sample, care is taken to ensure sufficiently large creepage and clearance distances between the connections to the electrodes and from the connections to the electrodes to a wall of the test chamber. To this end, horn covers 46, 46a are placed over the horns. In addition, for the same purpose, the adjusting wheels 60 include convolutions 63, 65 that mesh with corresponding convolutions 70, 72 in the test vessel 12 and the horn covers 46, 46a.

    摘要翻译： 测试容器组件（10）包括限定室18的中心测试容器12，待测试样品可以存储在腔室18中。 一对侧面可调节电极30,30a被容纳在腔室中并浸没在待测样品中。 电极之间的间隙可以通过相应的电极调节组件来调节，每个电极调节组件包括连接到相应电极的轴32，轴通过相关联的调节轮60的旋转而进入和离开测试容器12.在使用中，每个 电极30,30a经由相应的轴电连接到测试组件的绝缘喇叭中的触点，用于提供稳定增加的电压以确定样品的击穿电压。 为了防止空气而不是样品中的破坏，需要注意确保与电极的连接和从电极的连接到测试室的壁之间的足够大的爬电距离和间隙距离。 为此，喇叭罩46,46a放置在喇叭上。 此外，为了相同的目的，调节轮60包括与测试容器12中的对应卷积70,72和喇叭盖46,46a啮合的卷积63,65。