DE10300383B4 - Pipeline pig - Google Patents

Pipeline pig Download PDF

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Publication number
DE10300383B4
DE10300383B4 DE2003100383 DE10300383A DE10300383B4 DE 10300383 B4 DE10300383 B4 DE 10300383B4 DE 2003100383 DE2003100383 DE 2003100383 DE 10300383 A DE10300383 A DE 10300383A DE 10300383 B4 DE10300383 B4 DE 10300383B4
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DE
Germany
Prior art keywords
pig
holder
measuring heads
wall
pipe
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.)
Expired - Fee Related
Application number
DE2003100383
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German (de)
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DE10300383A1 (en
Inventor
Reinhold Dipl.-Ing. Reif
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.)
Gmh Prueftechnik 90461 Nuernberg De GmbH
Original Assignee
Windhoff Bahn und Anlagentechnik GmbH
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Publication date
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Priority to DE2003100383 priority Critical patent/DE10300383B4/en
Publication of DE10300383A1 publication Critical patent/DE10300383A1/en
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Publication of DE10300383B4 publication Critical patent/DE10300383B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G01N27/90—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
    • F16L55/28—Constructional aspects
    • F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
    • F16L55/32—Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/30—Inspecting, measuring or testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/263—Surfaces
    • G01N2291/2636—Surfaces cylindrical from inside

Abstract

Rohrleitungsmolch (1) zur Prüfung von Rohrleitungswandungen (13), mit mindestens einem Molchkörper (3) und mehreren Messköpfen (6), die außen am Molchkörper (3) ringsum vorgesehen und jeweils an einem Halter (7), der am Molchkörper (3) radial verschiebbar gelagert und nach außen vorgespannt ist, befestigt sind, dadurch gekennzeichnet, dass die Messköpfe (6) an ihrem jeweiligen Halter (7) kippbar um eine etwa rechtwinklig zur Molchlängsachse (2) und etwa rechtwinklig zur Verschieberichtung (8) des Halters (7) verlaufende Achse (10) gelagert sind und dass die Messköpfe (6) außenseitig jeweils ein Gleitmittel (14) zur Anlage an der Innenwand (12) der Rohrleitungswandung (13) aufweisen, dessen beide Längsenden (15) beidseitig des Messkopfes (6) in Richtung der Molchlängsachse (2) überstehen.Pipeline pig (1) for the examination of Pipe walls (13), with at least one pig body (3) and several measuring heads (6), the outside of the pig body (3) provided on all sides and in each case on a holder (7) attached to the pig body (3) mounted radially displaceable and biased to the outside, attached are characterized in that the measuring heads (6) at their respective Holder (7) tiltable about at right angles to the pig longitudinal axis (2) and approximately at right angles to the direction of displacement (8) of the holder (7) extending axis (10) are mounted and that the measuring heads (6) externally in each case a lubricant (14) for engagement with the inner wall (12) of the pipe wall (13) whose two longitudinal ends (15) on both sides of the measuring head (6) in the direction of the pig longitudinal axis (2) survive.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft einen Rohrleitungsmolch nach dem Oberbegriff des Anspruchs 1.The The invention relates to a pipeline pig according to the preamble of claim 1.

Aus der DE 35 11 076 A1 ist ein gattungsgemäßer Rohrleitungsmolch zur Prüfung von Rohrleitungswandungen bekannt.From the DE 35 11 076 A1 is a generic pipe pig for testing pipe walls known.

Bei dem bekannten Rohrleitungsmolch ist nicht auszuschließen, daß die Sensoren nicht mehr rechtwinklig an der Rohrwandung anliegen oder von dieser beabstandet sind, wenn der Rohrleitungsmolch in gekrümmten Rohrleitungen eingesetzt wird. Dementsprechend ist nicht auszuschließen, daß das Messergebnis verfälscht wird.at the well-known pipeline pig can not be ruled out that the sensors no longer rest at right angles to the pipe wall or from this are spaced when the pipeline pig in curved pipes is used. Accordingly, it can not be ruled out that the measurement result falsified becomes.

Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Rohrleitungsmolch dahingehend zu verbessern, daß alle Messköpfe und dementsprechend alle Sensoren eines Molchkörpers sowohl in einem geraden als auch in einem gekrümmten Rohrleitungsabschnitt stets gleich weit von der Innenwand der Rohrleitung beabstandet sind bzw. stets an der Innenwand der Rohrleitung anliegen.Of the Invention is based on the object, a generic pipe pig to improve that all Probes and accordingly all sensors of a pig body both in a straight as well as in a curved Pipe section always equidistant from the inner wall of the pipe are spaced or always abut the inner wall of the pipe.

Diese Aufgabe wird durch einen Rohrleitungsmolch mit den Merkmalen des Anspruchs 1 gelöst.These Task is performed by a pipeline pig with the characteristics of Claim 1 solved.

Die Erfindung schlägt mit anderen Worten vor, erstens eine kippbare Lagerung der Messköpfe vorzusehen und zweitens ein beidseitig überstehendes Gleitteil.The Invention proposes in other words, first, to provide a tiltable mounting of the measuring heads and second, a bilateral protruding Slide.

Vorteilhaft kann vorgesehen sein, daß zwischen dem Molchkörper und den Haltern der Messköpfe jeweils eine Feder vorgese hen ist, insbesondere eine Druckfeder, so daß der Halter bzw. der Messkopf radial nach außen in Anlage an die Innenwand der Rohrleitung gedrückt wird.Advantageous can be provided that between the pig body and the holders of the measuring heads each spring is vorgese hen, in particular a compression spring, so that the Holder or the measuring head radially outwards in contact with the inner wall of Pipeline pressed becomes.

Vorteilhaft kann vorgesehen sein, daß die überstehenden Längsenden des Gleitteils kufenförmig radial nach innen gebogen sind.Advantageous can be provided that the supernatant longitudinal ends of the sliding part skid-shaped bent radially inward.

Weitere Vorteile der Erfindung ergeben sich aus der Beschreibung und der Zeichnung. Ebenso können die vorstehend genannten und die noch weiter ausgeführten Merkmale erfindungsgemäß jeweils einzeln für sich oder zu mehreren in beliebigen Kombinationen Verwendung finden. Die gezeigte und beschriebene Ausführungsform ist nicht als abschließende Aufzählung zu verstehen, sondern hat vielmehr beispielhaften Charakter für die Schilderung der Erfindung.Further Advantages of the invention will become apparent from the description and the Drawing. Likewise the above-mentioned and still further features according to the invention individually for themselves or to several in any combination use. The embodiment shown and described is not meant to be exhaustive but has rather exemplary character for the description of the Invention.

Es zeigt:It shows:

1 eine Seitenansicht des erfindungsgemäßen Rohrleitungsmolchs mit mehreren Messköpfen zur Prüfung einer Rohrleitungswandung; und 1 a side view of the pipe pig according to the invention with a plurality of measuring heads for testing a pipe wall; and

2 die Lagerung eines in 1 gezeigten Messkopfes am Rohrleitungsmolch. 2 the storage of an in 1 shown measuring head at the pipeline pig.

Der in 1 gezeigte Rohrleitungsmolch 1 dient der optischen und/oder messtechnischen Untersuchung und/oder der Bearbeitung eines geraden oder gekrümmten Rohrs mittels Ultraschall, Wirbelstrom, Kamerasystem, Laser und artverwandten Techniken sowie Kombinationen davon.The in 1 shown pipeline pig 1 is used for optical and / or metrological examination and / or the processing of a straight or curved tube by means of ultrasound, eddy current, camera system, laser and related techniques and combinations thereof.

Der Molch 1 ist bezüglich seiner Längsachse 2 rotationssymmetrisch ausgebildet und weist vier jeweils axial beabstandete Molchkörper 3 auf, die zwischen zwei Endkörpern 4 angeordnet sind. Die Molch- und Endkörper 3, 4 sind miteinander jeweils durch ein Verbindungselement 5 gelenkig, aber torsionssteif verbunden. Außen an jedem Molchkörper 3 sind ringsum mehrere Messköpfe 6 zur Prüfung oder Bearbeitung einer Rohrleitungswandung 13 (2) vorgesehen.The newt 1 is with respect to its longitudinal axis 2 formed rotationally symmetrical and has four each axially spaced pig body 3 on that between two end bodies 4 are arranged. The pig and end body 3 . 4 are each connected by a connecting element 5 articulated, but torsionally connected. Outside on each pig body 3 There are several measuring heads all around 6 for testing or machining a pipeline wall 13 ( 2 ) intended.

Wie in 2 gezeigt, sind die Messköpfe 6 jeweils an einem Halter 7, der am Molchkörper 3 radial verschiebbar (Doppelpfeil 8) geführt ist, kippbar (Doppelpfeil 9) um eine rechtwinklig zur Molchlängsachse 2 und rechtwinklig zur Verschieberichtung 8 des Halters 7 verlaufende Achse 10 gelagert. Durch eine am Molchkörper 3 abgestützte Druckfeder 11 ist der Halter 7 radial nach außen vorgespannt, so dass, in der Gebrauchslage des Rohrleitungsmolchs 1, der Messkopf 6 an die Innenwand 12 der Rohrleitungswandung 13 angedrückt wird. Zur Anlage an der Innenwand 12 weisen die Messköpfe 6 außenseitig jeweils ein Gleitteil 14 auf, dessen beide Längsenden 15 beidseitig des Messkopfes 6 in Richtung der Molchlängsachse 2 überstehen und kufenförmig radial nach innen gebogen sind. Die radiale Verschiebbarkeit und die kippbare Lagerung der Messköpfe 6 am Molchkörper 3 bewirken, dass der Messkopf 6 sowohl in einem geraden als auch in einem gekrümmten Rohrleitungsabschnitt stets rechtwinklig zur Innenwand 12 bzw. radial zur Rohrmittelachse an der Innenwand 12 anliegt.As in 2 shown are the measuring heads 6 each on a holder 7 , the pig's body 3 radially displaceable (double arrow 8th ), tiltable (double arrow 9 ) at a right angle to the pig longitudinal axis 2 and at right angles to the direction of displacement 8th of the owner 7 extending axis 10 stored. By one on the pig body 3 supported compression spring 11 is the holder 7 biased radially outwards, so that, in the position of use of the pipeline pig 1 , the measuring head 6 to the inner wall 12 the pipeline wall 13 is pressed. To rest on the inner wall 12 assign the measuring heads 6 each outside a sliding part 14 on, whose two longitudinal ends 15 on both sides of the measuring head 6 in the direction of the pig's longitudinal axis 2 survive and are curved in a blade shape radially inward. The radial displaceability and the tiltable mounting of the measuring heads 6 at the pig body 3 cause the measuring head 6 always perpendicular to the inner wall both in a straight and in a curved pipe section 12 or radially to the pipe center axis on the inner wall 12 is applied.

Claims (3)

Rohrleitungsmolch (1) zur Prüfung von Rohrleitungswandungen (13), mit mindestens einem Molchkörper (3) und mehreren Messköpfen (6), die außen am Molchkörper (3) ringsum vorgesehen und jeweils an einem Halter (7), der am Molchkörper (3) radial verschiebbar gelagert und nach außen vorgespannt ist, befestigt sind, dadurch gekennzeichnet, dass die Messköpfe (6) an ihrem jeweiligen Halter (7) kippbar um eine etwa rechtwinklig zur Molchlängsachse (2) und etwa rechtwinklig zur Verschieberichtung (8) des Halters (7) verlaufende Achse (10) gelagert sind und dass die Messköpfe (6) außenseitig jeweils ein Gleitmittel (14) zur Anlage an der Innenwand (12) der Rohrleitungswandung (13) aufweisen, dessen beide Längsenden (15) beidseitig des Messkopfes (6) in Richtung der Molchlängsachse (2) überstehen.Pipeline pig ( 1 ) for testing pipe walls ( 13 ), with at least one pig body ( 3 ) and several measuring heads ( 6 ) outside the pig body ( 3 ) provided all around and each on a holder ( 7 ) on the pig body ( 3 ) mounted radially displaceable and forward to the outside is clamped, fastened, characterized in that the measuring heads ( 6 ) on their respective holder ( 7 ) tiltable about at right angles to the pig longitudinal axis ( 2 ) and approximately at right angles to the direction of displacement ( 8th ) of the holder ( 7 ) extending axis ( 10 ) and that the measuring heads ( 6 ) on the outside a lubricant ( 14 ) for engagement with the inner wall ( 12 ) of the pipeline wall ( 13 ), whose two longitudinal ends ( 15 ) on both sides of the measuring head ( 6 ) in the direction of the pig longitudinal axis ( 2 ) survive. Rohrleitungsmolch nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem Molchkörper (3) und den Haltern (7) jeweils eine Feder (11), insbesondere eine Druckfeder, vorgesehen ist.Pipe pig according to claim 1, characterized in that between the pig body ( 3 ) and the holders ( 7 ) one spring each ( 11 ), in particular a compression spring, is provided. Rohrleitungsmolch nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die überstehenden Längsenden (15) des Gleitteils (14) kufenförmig radial nach innen gebogen sind.Pipe pig according to claim 1 or 2, characterized in that the projecting longitudinal ends ( 15 ) of the sliding part ( 14 ) are curved blade-shaped radially inward.
DE2003100383 2003-01-09 2003-01-09 Pipeline pig Expired - Fee Related DE10300383B4 (en)

Priority Applications (1)

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DE2003100383 DE10300383B4 (en) 2003-01-09 2003-01-09 Pipeline pig

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DE2003100383 DE10300383B4 (en) 2003-01-09 2003-01-09 Pipeline pig

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DE10300383B4 true DE10300383B4 (en) 2005-05-12

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7402999B2 (en) * 2005-11-30 2008-07-22 General Electric Company Pulsed eddy current pipeline inspection system and method
US20120043962A1 (en) * 2010-08-20 2012-02-23 Changting Wang Method and apparatus for eddy current inspection of case-hardended metal components
US9057686B2 (en) * 2011-11-17 2015-06-16 The Boeing Company Non-destructive inspection apparatus having an ergonomic grip and associated method
ES2901649T3 (en) 2016-12-23 2022-03-23 Gecko Robotics Inc inspection robot
US11307063B2 (en) 2016-12-23 2022-04-19 Gtc Law Group Pc & Affiliates Inspection robot for horizontal tube inspection having vertically positionable sensor carriage
FR3069059B1 (en) * 2017-07-17 2022-02-11 Airbus Operations Sas INSPECTION TOOL FOR A METAL TUBE
CN109696483B (en) * 2018-12-30 2021-06-01 河海大学 Ultrasonic detection auxiliary device based on penetration method
EP3934861A4 (en) 2019-03-08 2022-12-07 Gecko Robotics, Inc. Inspection robot
EP4326493A1 (en) 2021-04-20 2024-02-28 Gecko Robotics, Inc. Flexible inspection robot

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511076A1 (en) * 1985-03-27 1986-10-09 Kopp AG International Pipeline Services, 4450 Lingen MOLCH FOR ELECTROMAGNETIC TESTS ON PIPELINE WALLS OF STEEL AND METHOD THEREFOR
DE10106614C1 (en) * 2001-02-13 2002-05-29 Archinger Ag Pig, for inspection and maintenance of straight and curved pipes, has base body in dumb-bell shape, with test/working unit between dumb-bell bodies and sliding cushion around their outer surfaces against pipe wall

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511076A1 (en) * 1985-03-27 1986-10-09 Kopp AG International Pipeline Services, 4450 Lingen MOLCH FOR ELECTROMAGNETIC TESTS ON PIPELINE WALLS OF STEEL AND METHOD THEREFOR
DE10106614C1 (en) * 2001-02-13 2002-05-29 Archinger Ag Pig, for inspection and maintenance of straight and curved pipes, has base body in dumb-bell shape, with test/working unit between dumb-bell bodies and sliding cushion around their outer surfaces against pipe wall

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Publication number Publication date
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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: WINDHOFF BAHN- UND ANLAGENTECHNIK GMBH, 48431 RHEI

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: GMH PRUEFTECHNIK GMBH, 90461 NUERNBERG, DE

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee