公开(公告)号：US06339993B1

公开(公告)日：2002-01-22

申请号：US09173444

申请日：1998-10-16

Applicant: Corry Comello ,  Poul Laursen ,  Jukka Maki

Inventor： Corry Comello ,  Poul Laursen ,  Jukka Maki

IPC: F16L5544

CPC classification number: F16L55/28

Abstract: A device (1) for passing through pipes in the form of a pig (1) moving through the pipe and guided on the inner wall thereof has at least one pig body (16) and support elements (8a) on the outer periphery thereof for guidance within the pipe as well as drive elements (10a, 10b) in the form of collars for transport in the pipe. The device is distinguished by improved entrance into the pipe conduit in that at least one of the collars (10a, 10b) can be radially expanded.

Abstract translation: 一种用于穿过管道形式的管道（1）穿过管道并在其内壁上被引导的装置（1）在其外周上具有至少一个猪体（16）和支撑元件（8a），用于 管道内的引导以及用于在管道中运输的套环形式的驱动元件（10a，10b）。 该装置的特征在于通过改进的管道入口的区别在于，套环（10a，10b）中的至少一个可以径向膨胀。

公开(公告)号：US06196075B1

公开(公告)日：2001-03-06

申请号：US09173443

申请日：1998-10-16

Applicant: Corry Comello ,  Poul Laursen ,  Jukka Maki

Inventor： Corry Comello ,  Poul Laursen ,  Jukka Maki

IPC: G01R312

CPC classification number: G01N27/902 ,  E21B2023/008 ,  G01N29/22 ,  G01N29/265 ,  G01N2291/106 ,  G01N2291/2636

Abstract: In order to facilitate introduction of an inspection pig through an introductory conduit having a smaller diameter and into a pipeline of large diameter and transporting a fluid, in particular gas or oil, the invention proposes a device for inspection of pipes having sensors disposed about an outer periphery thereof having radially expandable inspection units (6, 7), wherein, in particular, a front and a rear inspection unit (6, 7) having sensors (15; 15′) displaced with respect to each other in a peripheral sense can be moved axially towards each other.

Abstract translation: 为了便于通过具有较小直径的介绍导管引入检验猪并进入大直径的管道中并且输送流体，特别是气体或油，本发明提出了一种用于检查具有围绕外部设置的传感器的管道的装置 其周边具有径向可扩展的检查单元（6,7），其中特别地，具有相对于彼此在周边方向上移位的传感器（15; 15'）的前后检查单元（6,7）可以是 朝向彼此轴向移动。

公开(公告)号：US06762602B1

公开(公告)日：2004-07-13

申请号：US09598684

申请日：2000-06-21

Applicant: Poul Laursen ,  Christopher Meredith

Inventor： Poul Laursen ,  Christopher Meredith

IPC: G01N2782

CPC classification number: G01N33/20 ,  G01N27/82

Abstract: The invention proposes a device, e.g. an inspection pig, for inspecting conduits made from ferromagnetic materials, such as pipelines, for faults, cracks, corrosion or the like, comprising at least one pulling element, a supporting structure of variable circumference, disposed on the pulling element and comprising substantially radially disposed supporting arms each of which is pivotable about axes disposed perpendicular to the longitudinal central axis of the pulling element, and several permanent magnets disposed at the circumference of the supporting structure for generating a magnetic field, and with sensors. For strengthening or weakening the magnetic field generated by the permanent magnets in dependence on the circumference of the supporting structure or in dependence on the lateral separation between the permanent magnets, the permanent magnets are associated with further magnets having a magnetic field which can be varied in direction or strength. In an embodiment, the further magnets associated with the permanent magnets are permanent magnets, wherein the direction of their magnetic field can be changed by turning using an electric or mechanical actuator. In another embodiment coils are used as magnets, which can be supplied with a variable current.

Abstract translation: 本发明提出一种装置，例如 用于检查由铁磁材料（例如管道）制成的导管，用于断层，裂纹，腐蚀等的检查猪，包括至少一个牵引元件，可变圆周的支撑结构，设置在牵引元件上，并且包括基本上径向设置的 支撑臂可以围绕垂直于拉动元件的纵向中心轴设置的轴线枢转，以及设置在支撑结构的圆周处以产生磁场的多个永磁体以及传感器。 为了根据支撑结构的圆周来强化或削弱由永久磁铁产生的磁场，或者依赖于永磁体之间的横向分离，永磁体与具有可以在 方向或力量。 在一个实施例中，与永磁体相关联的另外的磁体是永磁体，其中可以使用电动或机械致动器转动来改变其磁场的方向。 在另一个实施例中，线圈用作可以提供可变电流的磁体。

公开(公告)号：US5864232A

公开(公告)日：1999-01-26

申请号：US701662

申请日：1996-08-22

Applicant: Poul Laursen

Inventor： Poul Laursen

IPC: G01N27/83 ,  G01N27/90 ,  G01N27/72 ,  G01N27/82

CPC classification number: G01N27/902

Abstract: An apparatus for analyzing anomalies such as cracks, corrosion and the like in a pipeline wall is provided. The apparatus is formed of one or more cylindrical body sections. A series of magnetizing units are mounted around the circumference of the body. Each magnetizing unit is formed by a backing bar, brushes which are capable of inducing a magnetic field, sensors which are capable of measuring magnetic flux leakage caused by anomalies in the wall and bearing wheels which reduce wear on the brushes and sensors. The backing bar is flexibly mounted on the body so that it can follow the contour of the pipeline wall as the apparatus moves through the pipeline. The backing bar has steel-containing brushes mounted on either end atop magnets of opposite polarities such that a magnetic field may be transmitted to the pipeline wall. The brushes are ideally formed by steel cables encased in polyurethane and mounted on a steel shell. The sensors are mounted in the central part of the backing bar, between the brushes. The sensors preferably have a parallelogram cross-sectional shape and are molded of polyurethane or other suitable material so that they are flexible enough to follow the contour of the pipeline wall as the apparatus travels through the pipeline and, hence, maintain the orientation of the sensing element in the sensor body in relation to the pipeline wall. A wear plate and wear pads may be mounted on top of the sensor body for reducing wear on the sensor.

Abstract translation: 提供一种用于分析管道壁中的裂纹，腐蚀等异常的装置。 该装置由一个或多个圆柱形主体部分形成。 一系列磁化单元安装在身体的周围。 每个磁化单元由支撑杆，能够引起磁场的电刷形成，能够测量由壁和轴承轮中的异常引起的磁通泄漏的传感器，这减少了电刷和传感器的磨损。 支撑杆灵活地安装在主体上，使得当设备移动通过管道时，它可以跟随管道壁的轮廓。 支撑杆具有钢包括的刷子，其安装在相反极性的磁体上的任一端上，使得磁场可以传输到管道壁。 刷子理想地由包裹在聚氨酯中的钢丝绳形成并安装在钢壳上。 传感器安装在支撑杆的中央部分，位于刷子之间。 传感器优选地具有平行四边形横截面形状并且由聚氨酯或其它合适的材料模制，使得它们足够柔性以在设备行进通过管道时跟随管道壁的轮廓，并且因此保持感测的方位 传感器体中的元件相对于管道壁。 磨损板和耐磨垫可以安装在传感器主体的顶部，以减少传感器的磨损。