EP2069774A1 - Dispositif de test du flux magnétique de fuite pour éprouvettes tubulaires - Google Patents

Dispositif de test du flux magnétique de fuite pour éprouvettes tubulaires

Info

Publication number
EP2069774A1
EP2069774A1 EP07817570A EP07817570A EP2069774A1 EP 2069774 A1 EP2069774 A1 EP 2069774A1 EP 07817570 A EP07817570 A EP 07817570A EP 07817570 A EP07817570 A EP 07817570A EP 2069774 A1 EP2069774 A1 EP 2069774A1
Authority
EP
European Patent Office
Prior art keywords
test
sensor
coil
longitudinal axis
probes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07817570A
Other languages
German (de)
English (en)
Inventor
Bernd Zimmermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prueftechnik Dieter Busch AG
Original Assignee
Prueftechnik Dieter Busch AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Prueftechnik Dieter Busch AG filed Critical Prueftechnik Dieter Busch AG
Publication of EP2069774A1 publication Critical patent/EP2069774A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning
    • G01N27/902—Arrangements for scanning by moving the sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors

Definitions

  • the present invention relates to a test device for nondestructive testing of tubular specimens.
  • the test device uses a device and a method for detecting defects on such test objects by means of sensors based on magnetic leakage flux.
  • Such devices are known per se. They consist of a plurality of ring-shaped arranged around the test specimen test coils, which are permanently installed in a holder. In this arrangement, the user has the choice either to choose the diameter of the passage opening through the arrangement of the test coils larger than the diameter of the specimen or with a matched diameter of the arrangement of the test coils strong wear of the arrangement of test coils. With increasing diameter of the arrangement of the test coils, the distance of the individual test coil from the surface of the specimen increases. This reduces the sensitivity of the measuring arrangement. Therefore, designing an array of test coils of conventional design is always a compromise between measurement accuracy, on the one hand, and the acceptable cost of replacing the array of test coils, on the other. Such exchange becomes necessary when e.g. the test object does not pass through the opening in the arrangement of test coils exactly centrically or else raised defects on the surface of the test object damage the arrangement of test coils.
  • the aim of the present invention is to provide an improved sensor system for detecting defects in tube-shaped test specimens.
  • test device for testing tubular test specimens which is characterized in that a plurality of individual, from the outside of the tubular test specimen radially inwardly movable test probes is provided, each test probe on the one hand has a test coil, whose surface normal is directed perpendicular to the longitudinal axis of the specimen, and on the other hand, each test probe further comprises a second test coil whose surface normal is oriented substantially parallel to the longitudinal axis of the specimen.
  • the test probes are fastened in one embodiment of the invention on finger-shaped, elastic and provided with a mechanical bias brackets and by means of devices Hard metal protected from impact and abrasion by the test specimen.
  • the rigid finger-shaped holders of the test probes are rotatably mounted.
  • a further embodiment provides for a regulation of the rotational movement, so that the test probe in its finger-shaped holder always bears against the tubular test piece.
  • the invention is advantageously used to test larger steel and iron pipes, e.g. For example, those used for oil transportation (pipelines).
  • the invention is capable of detecting defects on said tubes which tend to extend transverse to the tube longitudinal axis.
  • FIG. 1 shows a perspective view of a tubular test specimen 10 having a tube wall 13 and a transverse defect 12 drawn by way of example.
  • FIG. 3 shows a particularly space-saving arrangement of a sensor holder.
  • Figure 1 shows a sensor carrier 20 which is slotted and flexed to provide a number (e.g., 4 to 8) of terminal and finger-shaped sensor mounts 21-25.
  • the shaping takes place in such a way that the sensor holders have a resilient bias and the sensors 53 mounted thereon can resiliently rest on the test piece for the purpose of detecting stray magnetic flux quantities.
  • the shape is such that the sensor mounts 21-25 are disposed on an imaginary cylindrical surface around the sample, as shown in the figure.
  • a number (usually 2, 3, 4 or 8 pieces) of individual sensor carriers 20 are inserted into a higher-level holder (not shown), so that the sensor carriers enclose the entire tube circumference.
  • a sensor carrier 20 is suitable to be formed by bending about its longitudinal axis so that it can be inserted into different sized oversized brackets. With just a few sizes of sensor carriers or sensor holders, testers for many different tube diameters can easily be used (preferably in the range of 60mm to 370mm). As a result, although for each pipe diameter own higher-level brackets required, the individual sensor carrier 20, sensor brackets 21 - 25 with the associated sensors but can be used for several different pipe diameters.
  • the sensor carrier 20 and the sensor holders 21 - 25 are not made of one part. It thus becomes possible to exchange individual sensor holders 21 between different sensor carriers 20, wherein the sensor carriers 20 are each adapted to a specific or a number of different tube diameters. If the sensor carriers 20 are designed to be deformable, the number of required sensor carriers is reduced during the transition to a corresponding smaller tube diameter. For rigid sensor carriers 20, a separate type of sensor carrier is required for each tube diameter. There are contact devices 31 - 35 are provided so that electrical outputs of sensors used can be connected to connection cables, which in turn are associated with symbolically indicated contact devices 41 - 45 in connection.
  • FIG. 1 The arrangement shown in FIG. 1 is thus suitable for scanning a tubular test specimen, in particular in its longitudinal direction, as indicated by the arrow in FIG. 1.
  • the actual sensor 53 shown in FIG. 2 includes sensor coils 52, 52 'and 54', 54 "for detecting stray magnetic flux quantities respectively located on the underside of the sensor holders, as shown in FIG In principle, it is a sensor coil combination consisting of a respective lying flat coil whose turns 54 ', 54 "are shown in cross-section and whose axis extends radially to the DUT, and in each case a perpendicular thereto, ie upright standing coil with turns 52, 52 ', whose axis is parallel to the transport direction of the specimen 13. Both the flat-lying coil 52, 52 'and the upright coil 54' 54 "extends in area over virtually the entire width of a sensor holder (eg 21).
  • stops 62, 64 are provided on a holder 60 in order to limit the possibility of movement of the sensor holder in the radial direction.
  • the coils 52, 54 embedded in a suitable filler are normally directly on the DUT or the surface of the tube 10. It is also possible to design the sensor coil 54, the axis of which points radially away from the test object and receives the magnetic field components extending radially to the test object, as a flat coil.
  • the winding of this coil may also be e.g. take the form of an applied to a circuit board spiral of conductive material.
  • a particularly space-saving design is further illustrated by a single sensor holder.
  • the individual sensor holders 61 are in the form of rohrfbrmigen test piece 10 formed radially extending tubes and thus require less space in the transport direction of rohrfbrmigen DUT as in the embodiment shown in Fig. 1.
  • the sensors 52, 52 'and 54', 54 "are protected by an annular cemented carbide piece 26.
  • a contact device 31 is provided on the sensors through which the supply and through a connecting cable In the interior of the tube, that is to say on the side of the sensor which is remote from the test object, there is, in addition to the contact device 31, an alignment device 59 which, in conjunction with devices not shown, is connected to the sensor element.
  • the sensor itself is pressed, for example, by means of a helical spring 58 against the wall 13 of the test piece 10.
  • An adjustment of the pressing force is made possible by a screw 56, for example If a control of the distance of the sensors from the wall 13 of the device under test 10 is provided, then this can be done with compressed air or over a linear motor or spindle drive in the tubular sensor holder 61 are effected. In this design, the space required for two of these devices in a row for gapless coverage of the specimen is particularly low.
  • the fingers run parallel or perpendicular to the transport device, it may prove expedient that the fingers have a different orientation to the transport direction.
  • the modular design of the test device from sensor holder 21 - 25, sensor carrier 20 and parent holder allows a significant reduction in the variety of parts.
  • the resilient support or a regulation of the distance from the sensor to the DUT the wear of the sensors is reduced.
  • such a simple replacement of individual sensors in the event of a defect is possible, which can occur after wear of the hard metal part.
  • the entire test head must be replaced with every defect of a single coil since all sensors in the test head are cast. Therefore, any such replacement will always replace all coils, regardless of whether they are still intact.

Abstract

L'invention concerne un dispositif de test du flux magnétique de fuite en vue de tester des éprouvettes métalliques tubulaires, qui présente une pluralité de sondes de test en forme de doigts mobiles radialement par rapport à l'axe longitudinal de l'éprouvette et qui sont placées de l'extérieur sur tous les côtés de l'éprouvette. De cette manière, cette dernière est entourée par les sondes de test et peut être déplacée en dessous de celles-ci. En plus d'une première bobine de test dont la normale à la surface est orientée sensiblement en parallèle à l'axe longitudinal de l'éprouvette, chaque sonde de test présente de plus une deuxième bobine de test. La normale à la surface de la deuxième bobine de test est sensiblement perpendiculaire à l'axe longitudinal de l'éprouvette.
EP07817570A 2006-09-28 2007-09-25 Dispositif de test du flux magnétique de fuite pour éprouvettes tubulaires Withdrawn EP2069774A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006046339 2006-09-28
PCT/DE2007/001728 WO2008040312A1 (fr) 2006-09-28 2007-09-25 dispositif de test du flux magnétique de fuite pour éprouvettes tubulaires

Publications (1)

Publication Number Publication Date
EP2069774A1 true EP2069774A1 (fr) 2009-06-17

Family

ID=38962793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07817570A Withdrawn EP2069774A1 (fr) 2006-09-28 2007-09-25 Dispositif de test du flux magnétique de fuite pour éprouvettes tubulaires

Country Status (4)

Country Link
US (1) US7579831B2 (fr)
EP (1) EP2069774A1 (fr)
JP (1) JP5140677B2 (fr)
WO (1) WO2008040312A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2566933C (fr) * 2006-10-17 2013-09-24 Athena Industrial Technologies Inc. Appareil et methode d'inspection
DE102011055409A1 (de) * 2011-11-16 2013-05-16 V&M Deutschland Gmbh Streuflusssonde zur zerstörungsfreien Streuflussprüfung von Körpern aus magnetisierbarem Werkstoff
CN103592364B (zh) * 2013-11-23 2016-05-18 清华大学 浮动式管道内漏磁检测装置的手指探头单元
CN105241950B (zh) * 2015-10-22 2018-11-23 安东检测有限公司 漏磁探头外壳、漏磁探头及漏磁检测设备
EP3171164A1 (fr) * 2015-11-20 2017-05-24 General Electric Technology GmbH Outil et procédé pour mesurer une contamination dans une fente d'une barre conductrice
CN107167516B (zh) * 2017-05-24 2023-09-26 昆明理工大学 双差动式脉冲涡流探头单元、阵列探头及检测装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029382A (en) * 1959-08-31 1962-04-10 Russell C Heldenbrand Electro-magnetic flaw finder

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504276A (en) * 1967-04-19 1970-03-31 American Mach & Foundry Printed circuit coils for use in magnetic flux leakage flow detection
JPS5269381A (en) * 1975-12-05 1977-06-09 Sumitomo Metal Ind Method of magnetically detecting flaw
JPS5940265B2 (ja) * 1978-02-13 1984-09-28 日本鋼管株式会社 熱ビレツト渦流探傷装置
DE2847716C3 (de) * 1978-11-03 1981-04-23 Institut Dr. Friedrich Förster Prüfgerätebau, 7410 Reutlingen Rotierkopf zum Prüfen von langgestrecktem ferromagnetischem Prüfgut
JPH02247556A (ja) * 1989-03-20 1990-10-03 Sumitomo Metal Ind Ltd 脱炭層検出方法及び装置
JPH04269653A (ja) * 1991-02-25 1992-09-25 Nippon Telegr & Teleph Corp <Ntt> 漏洩磁束検出装置
JPH08101167A (ja) * 1994-09-30 1996-04-16 Tokyo Gas Co Ltd 非破壊検査用センサ及びその製造方法
FR2743890B1 (fr) * 1996-01-24 1998-04-03 Intercontrole Sa Capteur a courants de foucault et outillage de controle de tube comportant au moins un tel capteur
JP2002533659A (ja) * 1998-12-18 2002-10-08 マイクロ−エプシロン・メステヒニク・ゲーエムベーハー・ウント・コンパニー・カー・ゲー 渦電流センサの作動方法及び渦電流センサ
US6720764B2 (en) * 2002-04-16 2004-04-13 Thomas Energy Services Inc. Magnetic sensor system useful for detecting tool joints in a downhold tubing string
JP2004028897A (ja) * 2002-06-27 2004-01-29 Osaka Gas Co Ltd 渦流探傷装置
EP1394360A1 (fr) * 2002-08-23 2004-03-03 Siemens Aktiengesellschaft Méthode de controle non destructeur d'un composant et méthode de fabrication d'une ailette de turbine à gas
US6891380B2 (en) * 2003-06-02 2005-05-10 Multimetrixs, Llc System and method for measuring characteristics of materials with the use of a composite sensor
DE102004035174B4 (de) * 2004-07-16 2006-08-10 V&M Deutschland Gmbh Verfahren und Vorrichtung zur zerstörungsfreien Prüfung von Rohren
US20060132123A1 (en) * 2004-12-22 2006-06-22 General Electric Company Eddy current array probes with enhanced drive fields
GB0428127D0 (en) * 2004-12-22 2005-01-26 Pll Ltd A sensor system for an in-line inspection tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029382A (en) * 1959-08-31 1962-04-10 Russell C Heldenbrand Electro-magnetic flaw finder

Also Published As

Publication number Publication date
US7579831B2 (en) 2009-08-25
JP2010505093A (ja) 2010-02-18
US20080079427A1 (en) 2008-04-03
JP5140677B2 (ja) 2013-02-06
WO2008040312A1 (fr) 2008-04-10

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