WO2007075126A1 - Mecanisme de fixation d'un capteur au boitier d'un detecteur de defauts intratubulaire - Google Patents

Mecanisme de fixation d'un capteur au boitier d'un detecteur de defauts intratubulaire Download PDF

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Publication number
WO2007075126A1
WO2007075126A1 PCT/RU2006/000686 RU2006000686W WO2007075126A1 WO 2007075126 A1 WO2007075126 A1 WO 2007075126A1 RU 2006000686 W RU2006000686 W RU 2006000686W WO 2007075126 A1 WO2007075126 A1 WO 2007075126A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
sensor
flaw detector
levers
mechanism according
Prior art date
Application number
PCT/RU2006/000686
Other languages
English (en)
Russian (ru)
Inventor
Alexandr Maximilyanovich Popovich
Mikhail Dmitrievich Kostkin
Svyatoslav Evgenievich Lisin
Original Assignee
Popovich Alexandr Maximilyanov
Mikhail Dmitrievich Kostkin
Svyatoslav Evgenievich Lisin
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 Popovich Alexandr Maximilyanov, Mikhail Dmitrievich Kostkin, Svyatoslav Evgenievich Lisin filed Critical Popovich Alexandr Maximilyanov
Publication of WO2007075126A1 publication Critical patent/WO2007075126A1/fr

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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

Definitions

  • the invention relates to a device for in-line non-destructive testing of pipelines, and more specifically to a device for attaching a sensor of an in-line flaw detector.
  • flaw detector sensors are installed concentrically around the perimeter of the flaw detector body in order to block its entire surface during the monitoring of the condition of the pipe.
  • the pipe is not an ideal body.
  • the in-line flaw detector passes rounding, pipe sections of different diameters or different wall thicknesses.
  • the mechanism of fastening the sensor of the in-tube flaw detector during its movement should ensure a tight fit of the sensor to the pipe wall and its constant orientation in the radial direction relative to the longitudinal axis of the flaw detector body.
  • the base is a flexible plate bent as a parallelogram, fixed in the middle to the base on the flaw detector housing.
  • One branch of the plate is a support for the sensors, the other supports support from bending from the pipe wall in the place where the sensors are fixed.
  • this flaw detector system Due to its stiffness in the transverse direction, this flaw detector system provides a constant orientation of these sensors in the radial direction, but poorly provides a constant the adhesion of the sensors to the surface of the pipe, because due to the rigidity of the system can only track small changes in diameter.
  • IPC G01 N 027/72 contains sensors mounted on holders, each of which is mounted on the flaw detector housing with a pair of levers.
  • the levers are spaced in the longitudinal direction in a plane passing through the axis of symmetry of the flaw detector and are able to rotate in this plane.
  • Each specified lever has an axis of rotation at the point of attachment of the holder to the lever and at the place of attachment of the lever to the housing.
  • the holder together with the sensors are made according to the scheme
  • This design of mounting sensors ensures that they are pressed during movement along straight sections of the pipeline, including when changing the diameter of the pipe, since the sensor due to the lever system and swivel joints can repeat changes in the profile of the pipe walls. But the design has a relatively low resistance to lateral influences, as two levers are attached at the base and body almost at one point. When passing roundings or protrusions in the pipe wall, the base may shift away from the desired path of movement, in addition, the sensors may lose contact with the wall.
  • the claimed invention solves the problem of ensuring constant contact of the sensor with the pipe wall, both in straight sections, and in roundings and in places where the diameter of the pipe changes.
  • the sensor mounting mechanism provides an almost constant longitudinal position of the sensor relative to the flaw detector body with significant changes in the diameter of the studied pipe, which makes it possible to accurately determine the coordinates of the defects.
  • the mechanism for attaching the sensor to the body of the in-line flaw detector comprises a first two-arm lever, at the end of the first arm of which a sensor is fixed, a second lever, one end of which is pivotally attached to the hinge support of the first lever, and the second end is pivotally mounted on the body.
  • the mechanism also includes a third lever, one end of which is pivotally attached to the end of the second shoulder of the first lever, and the second end is pivotally mounted on the housing and a fourth lever, which is pivotally attached to the flaw detector housing at one point of the third lever and the other end is pivotally attached to the end the second lever at the location of the support, dividing the third lever into two shoulders.
  • the third and fourth levers and the corresponding shoulders of the first and second levers form a rhombus, in the diagonal of which a spring is attached to the levers, which works in tension and ensures that the sensor is pressed against the inner wall of the pipe under study.
  • the sensor is stable in the transverse direction, since the support points of the mechanism to the body are spaced.
  • the mechanism allows the sensor to move in the vertical direction with practically no displacement of the sensor in the longitudinal direction relative to the flaw detector body, since the attachment point of the sensor does not move along the radius, as usual in sensor attachment systems, but vertically.
  • the mechanism for attaching the sensor to the housing has such a structure that it develops, and the impact energy is absorbed by the spring mechanism.
  • the mechanism is made with swivel joints made with the possibility of moving the said levers in the same plane.
  • the places of attachment to the body of the second lever and the third and fourth are located on the body in the same plane passing through the axis of symmetry of the flaw detector body. This arrangement allows for the stability of the sensor in the transverse direction.
  • the mounting location of the third and fourth arm is located in the direction of the flaw detector in front of the mounting location to the housing of the second arm.
  • the spring is installed in the diagonal of a rhombus formed by levers, which is parallel to the body.
  • the ends of the said springs can be fixed at the respective ends of the third and fourth levers.
  • the hinged mounting of the sensor to the first lever and the hinged mounting of the second lever to the housing are located in the same plane, perpendicular to the axis of the flaw detector.
  • the sensor can be mounted on the first lever with the possibility of rotation, while it more accurately monitors pipe irregularities.
  • a number of sensor mounting mechanisms are installed on the flaw detector housing, located in planes passing through the axis of symmetry of the flaw detector housing, in order to cover the entire pipe forming with measuring sensors.
  • FIG. 1 is a diagram of a sensor mounting mechanism.
  • FIG. 2 front view of the mechanism.
  • the sensor mounting mechanism (Fig. 1 and Fig. 2) contains a first two-arm lever 1, at the end of the first arm of which a sensor 5 is fixed, a second two-arm lever 2, a third lever 3 and a fourth lever 4.
  • the ends of the levers 3 and 4 are connected by a spring 6.
  • Levers 3 and 4 by a hinge 12 are attached to the base 8 of the housing 7.
  • the lever 3 by a hinge 11 attached to the end of the first lever, the lever 4 by means of a hinge 9 is attached to the fulcrum of the second lever.
  • the second lever 2 by means of a hinge is attached to the fulcrum of the first lever 1.
  • lever 2 To the base 8 is also pivotally attached lever 2, the fastening point of which is located along the flaw detector behind the fastening point of the third 3 and fourth 4 levers.
  • the third 3 and fourth 4 levers and the corresponding shoulders of the first 1 and second 2 levers form a rhombus.
  • the hinged mounting of the sensor 5 to the first lever 1 and the hinged mounting of the second lever 2 to the body are located in one plane 14 extending perpendicular to the axis of the flaw detector body 7.
  • a number of mounting mechanisms for sensors 5 are installed, located in planes passing through the axis of symmetry of the casing 7 of the flaw detector.
  • the hinges of the mechanism can be strengthened, for example, using flexible flat plates or other means of reinforcement.
  • the fastening mechanism operates as follows.
  • the sensor When the flaw detector moves in the pipe, the sensor, by means of a lever mechanism, is pressed against the inner wall of the pipe 13, due to the tensile spring 6.
  • the sensor 5 When changing the diameter of the pipe 13, the sensor 5 moves, maintaining its position relative to the flaw detector body 7 in a longitudinal section, that is, its attachment point moves in the plane 14.
  • the mounting mechanism of the sensors allows you to track pipe bumps, changes in its diameter, while maintaining the position of the sensor 5 also in a plane passing through the axis of symmetry of the flaw detector body 7. All the mechanisms for mounting sensors 5 installed along the generatrix of the housing 7 also work (Fig. 2).

Abstract

L'invention concerne des dispositifs destinés au contrôle interne non destructeur de tuyauteries et plus particulièrement la conception d'un mécanisme de fixation d'un capteur d'un détecteur de défauts intratubulaire. Le mécanisme comprend un levier à deux bras. On a monté à l'extrémité d'un premier bras un capteur et un deuxième levier dont une extrémité est montée par charnière sur un support à charnière du premier levier et dont l'autre extrémité est montée par charnière sur le boîtier. Le mécanisme comprend également un troisième levier dont une extrémité est montée par charnière à l'extrémité du deuxième bras du premier levier et l'autre extrémité est montée par charnière au boîtier, et un quatrième levier dont une extrémité est montée par charnière sur le boîtier du détecteur de défauts à l'endroit de fixation du troisième levier et dont l'autre extrémité est montée par charnière sur le deuxième levier à l'endroit du support qui divise le troisième levier en deux bras. Les troisième et quatrième leviers et les bras correspondants des premier et deuxième leviers forment un losange dans la diagonale duquel on a fixé aux leviers un ressort de traction qui assure la compression du capteur contre la paroi interne du tuyau à examiner.
PCT/RU2006/000686 2005-12-21 2006-12-19 Mecanisme de fixation d'un capteur au boitier d'un detecteur de defauts intratubulaire WO2007075126A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005141812 2005-12-21
RU2005141812/28A RU2298784C1 (ru) 2005-12-21 2005-12-21 Механизм крепления датчика к корпусу внутритрубного дефектоскопа

Publications (1)

Publication Number Publication Date
WO2007075126A1 true WO2007075126A1 (fr) 2007-07-05

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ID=38107955

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2006/000686 WO2007075126A1 (fr) 2005-12-21 2006-12-19 Mecanisme de fixation d'un capteur au boitier d'un detecteur de defauts intratubulaire

Country Status (2)

Country Link
RU (1) RU2298784C1 (fr)
WO (1) WO2007075126A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2445593C1 (ru) * 2010-11-01 2012-03-20 Открытое акционерное общество "Газпром" Механизм крепления датчика к корпусу внутритрубного снаряда-дефектоскопа

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447777A (en) * 1980-10-17 1984-05-08 British Gas Corporation Magnetic pipeline inspection vehicle with metallic foil and bristle contacts supporting the vehicle
US5864232A (en) * 1996-08-22 1999-01-26 Pipetronix, Ltd. Magnetic flux pipe inspection apparatus for analyzing anomalies in a pipeline wall
RU2204113C1 (ru) * 2002-03-28 2003-05-10 ЗАО "Нефтегазкомплектсервис" Носитель датчиков для внутритрубного инспекционного снаряда (варианты)
RU2225977C1 (ru) * 2003-05-27 2004-03-20 ЗАО "Нефтегазкомплектсервис" Внутритрубный дефектоскоп

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447777A (en) * 1980-10-17 1984-05-08 British Gas Corporation Magnetic pipeline inspection vehicle with metallic foil and bristle contacts supporting the vehicle
US5864232A (en) * 1996-08-22 1999-01-26 Pipetronix, Ltd. Magnetic flux pipe inspection apparatus for analyzing anomalies in a pipeline wall
RU2204113C1 (ru) * 2002-03-28 2003-05-10 ЗАО "Нефтегазкомплектсервис" Носитель датчиков для внутритрубного инспекционного снаряда (варианты)
RU2225977C1 (ru) * 2003-05-27 2004-03-20 ЗАО "Нефтегазкомплектсервис" Внутритрубный дефектоскоп

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