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76 条记录 (耗时 0.011 秒)

    Inspection equipment for the inspection of magnetic defects of wire rope
    31.
    发明公开
    Inspection equipment for the inspection of magnetic defects of wire rope 审中-公开
    用于检查钢丝绳的磁缺陷

    公开(公告)号：EP2589959A3

    公开(公告)日：2016-06-01

    申请号：EP12190790.1

    申请日：2012-10-31

    申请人： Hitachi, Ltd. ,  Hitachi Building Systems Co., Ltd.

    发明人： Asai, Daisuke ,  Ooishi, Terunobu ,  Itou, Tomohiko

    IPC分类号： G01N27/87 ,  G01N27/83

    CPC分类号： G01N27/83 ,  B66B7/123 ,  D07B1/145 ,  D07B2301/251 ,  D07B2301/555

    摘要： An inspection equipment to detect twist of a wire rope with high precision by taking influences of change in the rope pitch due to the relative movement between the rope and the inspection equipment and tension of the rope into consideration, a magnetization device (2) magnetizes a wire rope (1) in a longitudinal direction thereof, the wire rope being produced by twisting steel wire bundles; magnetic detectors (8a-8h) disposed near the wire rope detect magnetic flux leakage from the wire rope, an arithmetic unit calculates (9,10,11) a rope pitch using a relative velocity between the wire rope and the inspection equipment from an encoder (7) and the magnetic flux leakage and corrects (12) elongation of the rope due to the tension measured by a tension measurement unit (6,13) based on the calculated pitch to thereby calculate (14,15) twist of the rope, and supplies results of the calculation to determine acceptability or inacceptability of the rope (16,17).

    VERFAHREN ZUR AUTOMATISIERTEN MESSUNG DER MAGNETISCHEN RESTFELDSTÄRKE VON AUFMAGNETISIERTEN FERROMAGNETISCHEN WERKSTÜCKEN
    33.
    发明公开
    VERFAHREN ZUR AUTOMATISIERTEN MESSUNG DER MAGNETISCHEN RESTFELDSTÄRKE VON AUFMAGNETISIERTEN FERROMAGNETISCHEN WERKSTÜCKEN 有权
    用于自动测量REST磁场强度方法磁化铁磁工件

    公开(公告)号：EP2350636A1

    公开(公告)日：2011-08-03

    申请号：EP09805992.6

    申请日：2009-11-18

    申请人： V & M Deutschland GmbH

    发明人： KAACK, Michael ,  NITSCHE, Stefan ,  GERMES, André

    IPC分类号： G01N27/87 ,  B21B38/00

    CPC分类号： G01R33/1215 ,  G01N27/87

    摘要： The invention relates to a method for the automated measurement of the residual magnetic field strength of magnetized ferromagnetic workpieces, especially steel tubes, the residual magnetic field exiting the face of the tube end being measured by means of a measuring probe. Instead of directly measuring the residual field strength on the face, the curve of at least one magnetic field component is measured on the outer surface of the tube at least in the region of the tube ends and beyond the tube ends and the residual field strength on the face is inferred on the basis of the previously determined correlations between the residual field strength measured on the face and on the tube surface.

    VERFAHREN ZUR ZERSTÖRUNGSFREIEN PRÜFUNG VON ROHREN
    34.
    发明公开
    VERFAHREN ZUR ZERSTÖRUNGSFREIEN PRÜFUNG VON ROHREN 有权
    方法管道无损检测

    公开(公告)号：EP2286212A1

    公开(公告)日：2011-02-23

    申请号：EP09745434.2

    申请日：2009-04-02

    申请人： V & M Deutschland GmbH

    发明人： GROOS, Andreas ,  NITSCHE, Stefan

    IPC分类号： G01N27/87

    CPC分类号： G01N27/87

    摘要： The invention relates to a method for the nondestructive testing of pipes made of ferromagnetic steel for flaws by means of leakage flux, wherein the pipe is magnetized by a constant field and the flaws present in the near-surface region of the outer or inner surface of the pipe cause magnetic leakage flux, which exits the pipe surface and is detected by probes of a test unit each for longitudinal and/or transversal flaw testing, wherein the association of the detected amplitude signals is performed on the basis of the amplitude height and/or the frequency spectrum with respect to an outer or inner flaw by external or internal flaw thresholds. To this end, prior to associating the detected amplitude signals with an external or internal flaw, the angular position of the flaw relative to the respective magnetic field direction is determined, and a correction of the signals is carried out by way of a previously determined corrective factor for amplitudes and/or frequencies.

    Flexible array probe for the inspection of a contoured surface with varying cross-sectional geometry
    35.
    发明公开
    Flexible array probe for the inspection of a contoured surface with varying cross-sectional geometry 有权
    柔性阵列探头zen Untersuchung einer konturiertenOberflächemit unterschiedlicher Querschnittsgeometrie

    公开(公告)号：EP1995591A2

    公开(公告)日：2008-11-26

    申请号：EP08156689.5

    申请日：2008-05-21

    申请人： Olympus NDT

    发明人： LEPAGE, Benoit ,  ROY, Martin ,  ORSI, Stefano

    IPC分类号： G01N27/90 ,  G01N27/87 ,  G01N29/22

    CPC分类号： G01N27/904 ,  G01N27/9013 ,  G01N29/221 ,  G01N2291/106 ,  G01N2291/2638

    摘要： A flexible array probe is disclosed suitable for use in the non-destructive testing and inspection of test pieces with varying cross-sectional geometries. Array elements (103) such as, but not limited to, eddy current sensors, piezoelectric sensor elements, and magnetic flux leakage sensors--are mounted on thin alignment fins (101) and coupled together with pairs of pivot mechanisms along the axis of desired rotation. The pivot mechanisms allow rotation in exactly one dimension and force the flexible array probe to align its elements orthogonally to the surface of the structure under test. Alignment and coupling fixtures arc also disclosed.

    摘要翻译： 公开了一种柔性阵列探头，适用于具有不同横截面几何形状的试件的无损检测和检查。 诸如但不限于涡电流传感器，压电传感器元件和磁通量泄漏传感器的阵列元件（103）安装在薄的对准翅片（101）上，并且沿着所需轴线的轴线与成对的枢转机构耦合在一起 回转。 枢转机构允许在恰好一个维度上旋转，并且迫使柔性阵列探针将其元件与待测结构的表面正交地对准。 还公开了对准和联接固定装置。

    Flaw detector of wire-rope
    36.
    发明公开
    Flaw detector of wire-rope 审中-公开
    Rissdetektorfürein Drahtseil

    公开(公告)号：EP1995589A2

    公开(公告)日：2008-11-26

    申请号：EP08009385.9

    申请日：2008-05-21

    申请人： Hitachi Ltd.

    发明人： Asai, Daisuke c/o Hitachi Ltd. ,  Ariga, Masaki c/o Hitachi Ltd.

    IPC分类号： G01N27/87

    摘要： A flaw detector of a wire-rope is provided which can enhance the reliability of measurement for a damage which is located even in a deep part of the wire-rope, by detecting a leakage magnetic flux caused in a damaged part of a steel wire. The flaw detection includes a magnetizer (2) for magnetizing a wire-rope (1) in the longitudinal direction of the latter, a plurality of magnetic detection means (3, 4) arranged in the circumferential direction of the wire-rope (1), for detecting a leakage magnetic flux, storages (8, 10) previously storing therein depths of damage parts, values of damage, sums of values detected by the plurality of magnetic detection means, difference values detected by adjacent magnetic detection means, wherein a depth and a value of damage of the damaged value are obtained from the values detected by the magnetic detection means and then the value stored in the storage.

    摘要翻译： 提供了一种钢丝绳的探伤器，通过检测钢丝损坏部分产生的泄漏磁通，可以提高即使在钢丝绳的深部位置的损伤的测量的可靠性。 所述探伤装置包括：用于沿钢丝绳沿长度方向磁化钢丝绳（1）的磁化器（2），沿钢丝绳（1）的圆周方向布置的多个磁检测装置（3,4） ，用于检测泄漏磁通量，预先存储损伤部分的深度的存储器（8,10），损伤值，由所述多个磁检测装置检测的值的总和，由相邻的磁检测装置检测的差值， 并且从由磁检测装置检测的值，然后存储在存储器中的值获得损坏值的损坏值。

    VERFAHREN ZUR ZERSTÖRUNGSFREIEN PRÜFUNG VON ROHREN AUF OBERFLÄCHENFEHLER
    37.
    发明公开
    VERFAHREN ZUR ZERSTÖRUNGSFREIEN PRÜFUNG VON ROHREN AUF OBERFLÄCHENFEHLER 审中-公开
    VERFAHREN ZURZERSTÖRUNGSFREIENPRÜFUNGVON ROHREN AUFOBERFLÄCHENFEHLER

    公开(公告)号：EP1910814A2

    公开(公告)日：2008-04-16

    申请号：EP06775800.3

    申请日：2006-07-28

    申请人： V & M Deutschland GmbH

    发明人： ORTH, Thomas ,  NITSCHE, Stefan ,  SCHMITTE, Till

    IPC分类号： G01N27/87

    CPC分类号： G01N27/9026 ,  G01N27/82

    摘要： The invention relates to near-real-time recording and analysis of data relating to surface faults. The following steps are used: transmission of the signals to a pre-amplifier, conversion of the analogue signals to a continuous data stream of digital data, buffering the data stream in a first memory (A), filing the first memory (A) with k data points, copying the k data points of the first memory (A) to a second memory (B) in a short time between two digital data points with simultaneous refilling of the first memory (A) with new data, transformation of the copied data by means of wavelet transformation and filtering or modification of the resulting wavelet coefficients, comparison of the measured parameters with a reference parameter, whereby a determined fault signal can be unambiguously allocated to the position of the fault.

    摘要翻译： 本发明涉及与表面故障有关的数据的近实时记录和分析。 使用以下步骤：将信号传输到前置放大器，将模拟信号转换成数字数据的连续数据流，在第一存储器（A）中缓冲数据流，用第一存储器（A）填充第一存储器 k个数据点，在两个数字数据点之间的短时间内将第一存储器（A）的k个数据点复制到第二存储器（B），同时用新数据重新填充第一存储器（A），复制 通过小波变换对数据进行数据处理并对所得到的小波系数进行滤波或修改，将所测量的参数与参考参数进行比较，由此可以将确定的故障信号明确地分配给故障的位置。

    Detecting flaws in the threaded end of an elongate member such as a pipe
    39.
    发明公开
    Detecting flaws in the threaded end of an elongate member such as a pipe 失效
    错误检测在一个长的螺纹端部，如管。

    公开(公告)号：EP0076684A1

    公开(公告)日：1983-04-13

    申请号：EP82305271.7

    申请日：1982-10-04

    申请人： EXXON PRODUCTION RESEARCH COMPANY

    发明人： Balter, Floyd Allen ,  Kusenberger, Delix Nels ,  Moyer, Mark Clifford ,  Perry, William Dean ,  Petersen Clifford Warin ,  Teller, Cicil Martin II

    IPC分类号： G01N27/82 ,  G01N27/87

    CPC分类号： G01N27/82

    摘要： For detecting flaws in the threaded end (26) of a ferromagnetic pipe (21), a magnetic force is applied to produce a field generally axially through the threaded pipe end, first and second means (55, 56) adjacent successive crests (28, 29) of a thread sense generally radial magnetic field and generate a first and second signal (51, 52) corresponding to the sensed magnetic fields, and means (42) differentially connect the signals generated by said first and second sensing means. In this way, a differential output signal is produced in response to a flaw between the crests of the thread being inspected. Means (60) can also be provided for helically rotating the sensing means (55, 56) to follow a path corresponding to the threads of the pipe, whereby the first and second signals vary with time.

    摘要翻译： 用于检测铁磁管（21）的螺纹端部（26）的缺陷，磁力被施加到产生一字段轴向穿过带螺纹的管端部，第一和第二装置产生的反弹（55，56）（相邻连续波峰28， 29）的螺纹义基因反弹径向磁场并且产生对应于所感测的磁场的第一和第二信号（51，52），以及装置（42）差分第一连接由所述产生的信号和第二感测装置。 以这种方式，差分输出信号是响应于一个缺陷产生之间被检查的螺纹的牙顶。 装置（60），因此可以提供一种用于螺旋地旋转所述感测装置（55,56）按照对应于该管的螺纹，由此第一和第二信号随时间变化的路径。