公开(公告)号：US20040239316A1

公开(公告)日：2004-12-02

申请号：US10882818

申请日：2004-07-01

Applicant: Halliburton Energy Services, Inc.

Inventor： Kwang M. Yoo

IPC: G01N027/72 ,  G01R033/12

CPC classification number: E21B47/0905 ,  G01N27/82 ,  G01V3/26

Abstract: A detector assembly and methods including a magnetoresistive sensor capable of detecting anomalies in the wall of a casing string disposed in a wellbore. Examples of anomalies include gaps between casings such as due to casing joints, air gaps in casing threads such as due to flush casing joints, enlarged casing wall thickness such as due to external casing collars, damaged casing, perforations, and other discontinuities or deformities in the casing. The detector assembly and methods detect perturbations in the earth's magnetic field caused by the anomalies. The detector assembly generates essentially no magnetic or electromagnetic field so that other downhole instrumentation is not affected by its presence.

Abstract translation: 一种检测器组件和方法，包括能够检测设置在井眼中的套管柱的壁中的异常的磁阻传感器。 异常的例子包括壳体之间的间隙，例如由于套管接头，套管螺纹中的空气间隙，例如由于冲洗的套管接头，由于外部套管套环而增大的套管壁厚度，损坏的套管，穿孔以及其他不连续性或变形 套管。 检测器组件和方法检测由异常引起的地球磁场的扰动。 检测器组件基本上不产生磁场或电磁场，以便其它井下仪器不受其存在的影响。

公开(公告)号：US20040183528A1

公开(公告)日：2004-09-23

申请号：US10708436

申请日：2004-03-03

Inventor： Alfred E. Crouch ,  Gary L. Burkhardt

IPC: G01N027/72

CPC classification number: G01N27/725

Abstract: A method and system for performing in-line measurement of stresses in pipeline walls by continuous Barkhausen method comprises an inspection pig including permanent or DC electromagnets for generating a magnetic field that moves with the inspection pig through a pipeline, inductive or other types of magnetic field sensors for reading Barkhausen noise signals generated by the moving magnetic field, and associated instrumentation for amplifying, filtering, detecting and storing the Barkhausen noise signals. The size of the sensors may be selected to match the size of defects being investigated. By comparing trending data over time to determine changes in Barkhausen noise levels, greater detection sensitivity may be achieved. The method may be particularly advantageous for use in inspection pigs that also use magnetic flux leakage to determine pipeline defects, since the magnetic flux leakage method also use permanent or DC electromagnets.

Abstract translation: 通过连续的巴克豪森方法对管壁内的应力进行在线测量的方法和系统包括：检查猪，其包括永久或直流电磁铁，用于产生与检查猪一起通过管道移动的磁场，感应或其他类型的磁场 用于读取由移动磁场产生的Barkhausen噪声信号的传感器，以及用于放大，滤波，检测和存储Barkhausen噪声信号的相关仪器。 可以选择传感器的尺寸以匹配正在研究的缺陷的尺寸。 通过比较随时间的趋势数据来确定巴克豪森噪声水平的变化，可以实现更高的检测灵敏度。 由于磁通泄漏方法也使用永久或直流电磁铁，所以该方法对于也可以使用磁通泄漏来确定管道缺陷的检查猪中尤为有利。

公开(公告)号：US20040169510A1

公开(公告)日：2004-09-02

申请号：US10376517

申请日：2003-02-28

Inventor： Michael Wayne Fields ,  Michael Leonard Dziech ,  Jon Russel Dierdorf ,  Anthony William Mellors ,  James Michael Johnson

IPC: G01N027/72 ,  G01N027/82

CPC classification number: G01N27/902

Abstract: An eddy current inspection apparatus includes a holder for a specimen, a holder for an eddy current probe, and an eddy current instrument operatively joined thereto. The probe holder includes carriages for translating the probe along first and second axes. The probe holder is selectively moved to align the probe with an internal channel of the specimen for sliding movement therealong to conduct eddy current inspection thereof.

Abstract translation: 涡流检查装置包括用于试样的保持器，用于涡流探针的保持器和可操作地连接到其上的涡流仪器。 探头支架包括用于沿着第一和第二轴平移探头的滑架。 选择性地移动探头支架以使探针与样品的内部通道对准，以便沿着其滑动运动以进行涡流检查。

公开(公告)号：US20040155651A1

公开(公告)日：2004-08-12

申请号：US10733919

申请日：2003-12-11

Inventor： Andrew Michael Britton

IPC: G01N027/72 ,  G01R033/12

CPC classification number: G01V3/107

Abstract: A metal detector (1) used for identifying contaminants in products. The detector (1) includes an oscillator coil (10) that may be formed as two series wound coils (34, 35) having relatively smaller dimensions or as two parallel wound coils (29, 30) having relatively larger dimensions. A pair of input coils (13, 14) is located adjacent to the oscillator coil (10). A first signal (8) is generated by the first input coil (13) in response to the presence of a metallic object, while a second signal (24) is generated by the second input coil (14) in response to the presence of a metallic object. By measuring the ratio of the first signal (8) to the second signal (24) the physical location of a metal object within the metal detector cavity (7) can be determined.

Abstract translation: 用于识别产品中污染物的金属探测器（1）。 检测器（1）包括可以被形成为具有相对较小尺寸的两个串联缠绕线圈（34,35）的振荡器线圈（10）或具有相对较大尺寸的两个平行绕组线圈（29,30）。 一对输入线圈（13,14）位于振荡器线圈（10）附近。 响应于金属物体的存在，由第一输入线圈（13）产生第一信号（8），同时由第二输入线圈（14）响应于存在金属物体而产生第二信号（24） 金属物体。 通过测量第一信号（8）与第二信号（24）的比率，可以确定金属物体在金属检测器腔（7）内的物理位置。

公开(公告)号：US20040124834A1

公开(公告)日：2004-07-01

申请号：US10650486

申请日：2003-08-28

Applicant: JENTEK Sensors, Inc.

Inventor： Neil J. Goldfine ,  Darrell E. Schlicker ,  Vladimir Tsukernik ,  Ian C. Shay ,  David C. Grundy ,  Andrew P. Washabaugh

IPC: G01N027/72

CPC classification number: G01N27/82

Abstract: Described are methods for pressurizing elastic support structures or balloons in sensor probes used for the inspection of components having areas of limited access. When inflated, the balloons press flexible sensors against the surface of the material under test. When deflated, the balloons permit easier insertion of the probes into the component and reduce the mechanical stresses on the sensors, thereby extending the sensor lifetime. By sequentially partially inserting the sensor into a limited access area from either side of the limited access area and scanning in opposite directions, the entire surface of the test material can be inspected.

Abstract translation: 描述了用于对用于检查具有有限进入区域的部件的检测的传感器探针中的弹性支撑结构或气囊加压的方法。 充气时，气球将柔性传感器压在被测材料的表面上。 当放气时，气囊允许更容易地将探针插入到部件中并降低传感器上的机械应力，从而延长传感器寿命。 通过从有限访问区域的任一侧依次将传感器部分地插入到有限访问区域中并且沿相反方向扫描，可以检查测试材料的整个表面。

公开(公告)号：US20040090228A1

公开(公告)日：2004-05-13

申请号：US10289399

申请日：2002-11-07

Inventor： Gregory John Goodrich ,  Walter Joseph Kusaywa

IPC: G01N027/72

CPC classification number: G01R31/343 ,  G01R31/346

Abstract: A method is disclosed for locating a speed sensitive ground condition in a field winding of an electromagnetic synchronous machine having a rotor and an excitation circuit, said method including: sensing a magnetic flux generated by the field winding, while accelerating the rotor and activating the excitation circuit; detecting a cyclical aberration in the magnetic flux occurring during revolution of the rotor, and determining a position in the field winding corresponding to the cyclical aberration and identifying that position as a location of the speed sensitive ground condition.

Abstract translation: 公开了一种用于定位具有转子和励磁电路的电磁同步电机的励磁绕组中的速度敏感接地状态的方法，所述方法包括：在加速转子并激活励磁的同时感测由励磁绕组产生的磁通量 电路 检测在转子旋转期间发生的磁通中的周期性像差，以及确定与循环像差相对应的场绕组中的位置，并将该位置识别为速度敏感地面条件的位置。

公开(公告)号：US20030193330A1

公开(公告)日：2003-10-16

申请号：US10121146

申请日：2002-04-10

Inventor： Chet M. Butikofer ,  Robert W. Jewell ,  Ronald D. Edwards

IPC: G01N027/72

CPC classification number: B65H7/00 ,  B65H27/00 ,  B65H2220/02 ,  B65H2404/5331 ,  B65H2511/10 ,  B65H2511/33 ,  B65H2511/417 ,  B65H2515/714 ,  B65H2515/842 ,  B65H2551/20 ,  B65H2601/121 ,  G01N17/00 ,  B65H2220/03 ,  B65H2220/11 ,  B65H2220/01

Abstract: This invention relates to the method and apparatus for indicating roller wear in a media handling device. Such structures of this type, generally, employ the use of variable inductance to determine roller wear. The media transport roller has a non-conductive surface with a conductive core. Located just above the conductive core is a rod containing a power coil that is driven by AC excitation and a pick-up coil. The pick-up coil is connected to circuitry that measures the inductance. As the media transport roller wears, the conductive core moves closer to an inductive pick-up unit. The measured output voltage from the pick-up unit depends upon the distance between the core and the pick-up unit. This inductance change can then be correlated to media transport roller wear and relayed to the user through the use of an LED or other similar types of numerical/graphical displays.

Abstract translation: 本发明涉及一种用于指示介质处理装置中的滚子磨损的方法和装置。 这种类型的这种结构通常采用可变电感来确定辊磨损。 介质输送辊具有带导电芯的非导电表面。 位于导电芯上方的是包含由AC激励和拾取线圈驱动的电力线圈的杆。 拾波线圈连接到测量电感的电路。 当介质传送辊磨损时，导电芯体更靠近感应拾取单元移动。 来自拾取单元的测量输出电压取决于芯和拾取单元之间的距离。 然后，该电感变化可以与介质传送辊磨损相关，并通过使用LED或其他类似类型的数字/图形显示器传递给用户。

公开(公告)号：US20030173958A1

公开(公告)日：2003-09-18

申请号：US10351978

申请日：2003-01-24

Applicant: JENTEK Sensors, Inc.

Inventor： Neil J. Goldfine ,  Vladimir A. Zilberstein ,  James M. Fisher ,  David C. Grundy ,  Darrell E. Schlicker ,  Vladimir Tsukernik ,  Robert J. Lyons ,  Ian C. Shay ,  Andrew P. Washabaugh

IPC: G01N027/72 ,  G01N027/90 ,  G01R033/18 ,  G01R033/12

CPC classification number: G01N27/904 ,  G01L5/0047

Abstract: Methods are described for the use of conformable eddy-current sensors and sensor arrays for characterizing residual stresses and applied loads in materials. In addition, for magnetizable materials such as steels, these methods can be used to determine carbide content and to inspect for grinding burn damage. The sensor arrays can be mounted inside or scanned across the inner surface of test articles and hollow fasteners to monitor stress distributions. A technique for placing eddy-current coils around magnetizable fasteners for load distribution monitoring is also disclosed.

公开(公告)号：US20030107371A1

公开(公告)日：2003-06-12

申请号：US10012939

申请日：2001-12-10

Inventor： Jonathan R. Engdahl ,  Ira B. Goldberg

IPC: G01N027/72 ,  G01R033/12

CPC classification number: G01N27/72 ,  G01V15/00

Abstract: A detector for magnetizable materials operates remotely to determine a amplitude and phase modification of an exciting magnetic field caused by the magnetizable materials. These amplitude and phase measurements are used to create a phase-amplitude trajectory in phase amplitude space, which may be finely divided to distinguish among a number of different types of components.

公开(公告)号：US20030080735A1

公开(公告)日：2003-05-01

申请号：US10268705

申请日：2002-10-11

Applicant: CEGELEC

Inventor： Gilbert Wache

IPC: G01N027/72 ,  G01R033/12 ,  G01R033/09

CPC classification number: G01N27/902

Abstract: A sensor for detecting defects in a component includes an electric coil fed with a varying electrical current to create a varying magnetic field penetrating at least partly into the component under test, and a defect detector including a magnetoresistor. The above components are accommodated in a protective housing having a detection face disposed near and parallel to a surface of the component under test. The coil has its axis null perpendicular to the detection face and the magnetoresistor is in the vicinity of the detection face. The magnetoresistor is a giant magnetoresistor and is disposed so that its sensitivity axis null1 sensitive to variations in a magnetic field is parallel to the detection face of the housing. The sensor further includes a first permanent magnet disposed so that it magnetically biases the magnetoresistor in the direction of its sensitive axis null1 to a value such that the operating point is a point on a curve, representing the output signal of the magnetoresistor as a function of the value of the component of the magnetic field in the direction of the sensitive axis, which is situated in the vicinity of the middle of a substantially rectilinear portion of the curve.

Abstract translation: 用于检测部件中的缺陷的传感器包括馈送有变化的电流的电线圈以产生至少部分地穿透到被测部件中的变化的磁场，以及包括磁电阻的缺陷检测器。 上述部件容纳在具有设置在被测部件的表面附近并且平行的检测面的保护壳体中。 线圈的轴线DELTA垂直于检测面，磁电阻位于检测面附近。 磁敏电阻器是巨磁电阻器，并且被设置为使得其对磁场变化敏感的灵敏度轴DELTA1平行于壳体的检测面。 该传感器还包括第一永久磁铁，其设置成使得磁敏电阻器在其敏感轴线DELTA1的方向上磁偏置到一个值，使得工作点是曲线上的一个点，表示磁控管的输出信号作为 位于曲线的大致直线部分的中间附近的感应轴方向上的磁场分量的值。