WO2007011269A1 - Conception d'un systeme de capteurs d'un defectoscope a l'interieur d'un tuyau - Google Patents

Conception d'un systeme de capteurs d'un defectoscope a l'interieur d'un tuyau Download PDF

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Publication number
WO2007011269A1
WO2007011269A1 PCT/RU2006/000391 RU2006000391W WO2007011269A1 WO 2007011269 A1 WO2007011269 A1 WO 2007011269A1 RU 2006000391 W RU2006000391 W RU 2006000391W WO 2007011269 A1 WO2007011269 A1 WO 2007011269A1
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WO
WIPO (PCT)
Prior art keywords
holder
flaw detector
sensors
sensor
lever
Prior art date
Application number
PCT/RU2006/000391
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 WO2007011269A1 publication Critical patent/WO2007011269A1/fr

Links

Classifications

    • 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
    • G01N29/225—Supports, positioning or alignment in moving situation
    • 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
    • G01N29/04—Analysing solids
    • G01N29/043—Analysing solids in the interior, e.g. by shear waves
    • 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
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/105—Number of transducers two or more emitters, two or more receivers
    • 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
    • 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

Definitions

  • the inventions relate to devices for non-destructive non-destructive testing of pipelines by passing inside a pipeline a device consisting of one or more transport modules with sensors installed on the housing, more specifically, to a device of an in-pipe flaw detector sensor system.
  • 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 design of the sensor system of the in-tube flaw detector during its movement should ensure a tight fit of the sensors to the pipe wall and a constant orientation of these sensors in the radial direction relative to the longitudinal axis of the flaw detector body.
  • IPC G01N 027/82 contains sensors mounted on the base - the slide and located around the perimeter of the flaw detector.
  • 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. 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
  • the sensor system according to US patent 5864232, publication January 26, 1999, IPC G01 N 027/72, contains sensors mounted on holders, each of which is mounted on the flaw detector housing using 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 is made according to the “parallelogram” scheme, which is stable and, due to its rigidity in the transverse direction, ensures constant orientation of these sensors in the radial direction when passing straight sections of the pipeline.
  • parallelogram the “parallelogram” scheme
  • This design of mounting sensors ensures their pressing while moving along straight sections of the pipeline, including and 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, since two levers are mounted both at the base and at the body at almost the same 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 group of inventions solves the problem of ensuring constant contact with the pipe wall, both in straight sections, and in roundings and in places where the diameter of the pipe changes, while maintaining lateral stability during movement of the system.
  • the inventive device of the sensor system of an in-line flaw detector contains a number of sensor holders mounted concentrically around the perimeter of the flaw detector. Each holder is located parallel to the longitudinal axis of the flaw detector housing, at least one sensor is mounted on the holder. Each holder at its front end along the flaw detector is pivotally attached to the lever, the other end of the lever is also pivotally mounted on the flaw detector body, one end of the spring is fixed to the holder at a distance from the lever attachment point, operating the working position of the system for compression, the other end of which is fixed to case.
  • the fit to the pipe wall is ensured by a structure containing two swivel joints at the points of attachment of the lever supporting the holder at its front end, which provides the holder with sensors with the necessary degree of freedom and the ability to follow the pipe wall with changes in diameter.
  • This arrangement of the lever and spring mounts to the holder, spaced along its length, provides the necessary rigidity of the system in the transverse direction, since the mounting of the sensors to the housing is rather rigid structure in the form of a “parallelogram”. This provides flexibility in the radial direction and the ability to rotate the holder relative to the lever in the radial plane.
  • This design of the sensor system allows solving two interrelated problems.
  • Each holder during the passage of any pipe sections: roundings, sections with different diameters, as well as pipe sections with occasional obstacles, for example, local irregularities, ensures that the sensors adhere to the pipe wall and are stable on the motion path.
  • the stability of each holder on a given trajectory of movement ensures the operability of the entire system of sensors, since they do not shift to the side, in the transverse direction and provide the removal of parameters from the entire surface of the pipe walls.
  • a second embodiment of the invention is as follows.
  • the device system of the in-tube flaw detector contains two rows of sensor holders mounted concentrically around the perimeter of the flaw detector in a checkerboard pattern, each holder having a T-shaped or cross-shaped plan with crossbars located along and across the longitudinal axis of the flaw detector on the transverse crossbar of the holder a series of sensors is installed, each holder at its front end along the flaw detector is pivotally attached to a lever, the other end of which is also a hinge It is fixedly mounted on the flaw detector housing, on the holder at a distance from the lever mounting point, one end of the spring is fixed, working in the working position of the system for compression, the other end of which is fixed on the housing.
  • This embodiment differs from the first in that the system contains two rows of sensor holders mounted concentrically around the perimeter of the flaw detector in a checkerboard pattern, each holder having a T-shaped or cross-shaped plan with crossbars located along and across the longitudinal axis of the flaw detector . A number of sensors are mounted on the crossbar of the holder. In this case, the system can work in a wider the range of changes in the internal diameters of the pipe examined by the flaw detector.
  • the advantages of the first option are complemented by the fact that two rows of sensors arranged in a checkerboard pattern, while mounted on the transverse crossbar of the holder, are capable of blocking a large surface of the pipe when its diameter changes.
  • the second row of sensors is separated from the first along the longitudinal axis of the flaw detector by a distance in plan not less than the width of the transverse beam of the sensor holder.
  • a third embodiment of the invention is as follows.
  • the device system of the in-line flaw detector sensors contains two rows of sensor holders mounted concentrically around the perimeter of the flaw detector body in a checkerboard pattern, each holder having a T-shaped or cross-shaped plan with crossbars located along and across the longitudinal axis of the flaw detector body.
  • a number of sensors are mounted on the crossbar of the holder.
  • Each holder at its front end along the flaw detector is pivotally attached to a lever, the other end of which is also pivotally mounted on the flaw detector body.
  • one end of the spring is fixed, working in the working position of the compression system, the other end of which is fixed to the housing.
  • the sensor holder is made of two parts, the first includes the front end of the holder, and the second crossbar and the rear end of the holder.
  • the second part of the holder is mounted on an axis fixed in the first part of the holder, with the possibility of rotation in the transverse direction.
  • the sensor holder is made of two parts, the first includes a front end and is attached to the lever with a hinge, therefore, in the transverse plane, it cannot be displaced relative to the lever.
  • the second part of the holder is mounted on an axis fixed in the first part of the holder, and can be rotated in the transverse direction relative to the first part. Thanks to such a device, the holder has an additional degree of freedom and the sensors can more accurately track the inside of the pipe. For example, on pipe turns, when its internal profile has a complex geometry, the surface of the sensors is always pressed against the pipe surface, since the second part of the holder can rotate in the transverse direction.
  • This design is also less susceptible to breakdowns due to technological protrusions on the inside of the pipe, such as the ends of bolts. Hitting the crossbar in such an obstacle, the second part of the holder rotates around the axis and passes the obstacle without breaking. Further, after an obstacle, the position of the sensors is restored automatically, they are pressed to the surface of the pipe due to the entire structure, in particular the lever and the spring.
  • a unit for primary processing of sensor signals can be installed on each holder.
  • each holder contains a chipper, made with a bevel directed forward, in the direction of the flaw detector. This chipper protects the system element from breakage when it encounters a technological protrusion located along the axis of the holder.
  • the ratio of the length of the lever and the length of the sensor holder lies in the range 1: 2.5 - 1: 3.5.
  • each of the articulated joints comprises an axis perpendicular to the longitudinal axis of the flaw detector housing.
  • FIG. 1 shows a general view of the sensor system of an in-line flaw detector
  • FIG. 2 sensor holder
  • FIG. 3 is a top view of a cross-shaped holder with sensors, FIG. 4 - holder T-shaped.
  • FIG. 5 shows a separate element of the sensor system.
  • FIG. 6 shows a system of sensors installed on the flaw detector housing in top, front and side views, respectively.
  • FIG. 1 An example of the device system sensors in-line flaw detector shown in Fig.1. FIG. 2, FIG. 5 - FIG. 8.
  • FIG. 6 - FIG. 8 contains two rows of holders 1 of the sensors 3, mounted staggered around the perimeter of the flaw detector body 2 in a checkerboard pattern, each holder 1 having a cross-shaped shape 17 in plan view.
  • the sensor holders 1 can also have a T-shape 18, as shown in FIG. . four.
  • the holder 1 (see Fig. 2, Fig. 3, Fig. 5) has a longitudinal crossbar 11 and a transverse 12. A number of sensors 3 are installed on the transverse crossbar 12 of the holder 1 (Fig. 3 and Fig. 4). On the crossbars 11 and 12 of the holder 1 is also located the block 6 of the primary signal processing. Each holder 1 at its front end along the flaw detector is pivotally attached with the help of axis 9 to the lever 4. The other end of the lever is pivotally attached with the help of axis 10 to the flaw detector body 2. The end of the compression spring 5 is mounted on the holder 1 under the sensors 3, its other end is mounted on the housing 2. The sensors 1 holder 1 is made of two parts, the first part 13 includes the front end of the holder 1.
  • the second part 14 of the holder 1 is mounted on the axis 15, fixed in the first part 13 of the holder 1, which allows the second part 14 to rotate in the transverse direction relative to the axis of the holder 1.
  • Each first part 13 of the holder 1 has a chipper 7.
  • Each unit 6 of the primary signal processing of the sensors 3 through a cable 16 is connected to the signal processing units of the flaw detector sensors, which are not shown in the figures.
  • the ratio of the length of the lever 5 and the length of the holder 1 of the sensors 3 lies in the range 1: 2.5 - 1: 3.5, which allows the system to best track pipe irregularities, ensuring the fit of the sensors
  • the spring 5 is attached to the holder 1 not at the extreme point, but at a distance from the extreme point of the holder 1 of 0.1 to 0.2 of the length of the holder 1, which creates the effect of "reinforcement” and ensures that the holder 1 fits to the pipe surface in the plane of the sensors 3 on the crossbar
  • the sensor system of the in-line flaw detector operates as follows.
  • the flaw detector (Fig. 1) moves inside the pipe.
  • the sensor system located concentrically around the perimeter of the flaw detector body 2 has contact with the inner surface of the pipe (not shown in FIG.).
  • the data from the sensors 3 enter the primary processing unit 6, where in particular, signal amplification, digitalization, switching, and signal transmission via cables 16 to the subsequent processing units can be performed.
  • the crossbar 12 of the holders will be located with the ends to each other. At the same time, the strip of readout of these sensors 3 overlaps the surface of the pipe. With an increase in the diameter of the pipe, the crossbars 12 with the sensors 3 diverge, with a decrease they approach each other.
  • the range of extreme sensors 3 can be calculated in such a way as to overlap the usual changes in the diameter of the pipe.
  • the sensor system 3 still overlaps the generatrix of the inner surface of the pipe and read the necessary data. This allows you to use the system without readjustment in pipes with different diameters.
  • the sensors 3 are pressed against the pipe surface due to the spring 5, which, due to its location and hinges, by which the lever 4 is attached, provides the positioning of the sensors 3 at the pipe wall.
  • the system is “flexible” in the radial direction, which allows you to press the sensors 3 to the surface of the pipe when passing bumps, with different pipe diameters and rounding.
  • An additional effect is provided by the implementation of the holder 1 of the sensors 3 of two parts, the first 13 - stationary and the second 14 - rotating. Firstly, during the passage of the pipe roundings, the rotating part 14 of the holder 1 rotates around its axis 15 and ensures that the sensors 3 are in contact with the pipe wall.
  • part 14 of the holder 1 rotates and passes the obstacle without breaking, then returning, due to contact with the wall and the action of the spring 5, to the working position.
  • the system “crashes” and passes the obstacle.
  • the system is sufficiently rigid in the transverse direction and provides accurate positioning of the sensors 3 along the generatrix of the pipe, which makes it possible according to the measurement results to precisely tie defects to points on the surface of the pipe.
  • the rigidity of the system is ensured by all structural elements associated with the holders 1. It is also important that the articulated joints of the lever have axes 8 and 9, which also provide rigidity in the transverse direction. Moreover, as noted above, the system can easily pass obstacles and is more resistant to breakdowns.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

L'invention concerne des dispositifs destinés au contrôle interne non destructeur des tuyauteries. Selon l'invention, on fait passer à l'intérieur des tuyauteries un dispositif constitué d'un ou de plusieurs modules de transport avec des capteurs montés sur le boîtier du dispositif. L'invention concerne plus particulièrement la conception du système des capteurs du défectoscope à l'intérieur d'un tuyau. Le dispositif comprend un ensemble de support de capteurs montés concentriques sur le périmètre du boîtier du défectoscope. Chaque support est monté parallèle à l'axe longitudinal du boîtier du défectoscope, et au moins un capteur est monté sur le support. Chaque support est monté par charnière sur un levier, près de son extrémité avant en suivant le mouvement du défectoscope, l'autre extrémité du levier étant montée par charnière sur le boîtier du défectoscope. Sur l'extrémité arrière de chaque support on a monté une extrémité d'un ressort qui fonctionne par compression dans un état de travail du système, et l'on a monté l'autre extrémité sur le boîtier. Les capteurs, montés sur les supports, sont orientés transversalement par rapport à l'axe longitudinal du défectoscope. Dans un deuxième mode de réalisation, le dispositif comprend deux rangées de supports de capteurs, montés concentriques et en quinconce sur le périmètre du boîtier du défectoscope. Chaque support possède en plan une forme en croix ou en T, avec des traverses disposées le long et en travers de l'axe longitudinal du boîtier du défectoscope. Dans un troisième mode de réalisation, le support des capteurs est constitué de deux parties, la première comprenant l'extrémité avant et étant montée au moyen d'une charnière sur le levier, ce qui l'empêche de se déplacer dans un plan transversal par rapport au levier. La deuxième partie du support est montée sur un axe monté dans la première partie du support et peut effectuer des rotations dans une direction transversale par rapport à la première partie.
PCT/RU2006/000391 2005-07-19 2006-07-14 Conception d'un systeme de capteurs d'un defectoscope a l'interieur d'un tuyau WO2007011269A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005123408 2005-07-19
RU2005123408/28A RU2293312C1 (ru) 2005-07-19 2005-07-19 Устройство системы датчиков внутритрубного дефектоскопа (варианты)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130081486A1 (en) * 2011-09-29 2013-04-04 Electric Power Research Institute, Inc. Apparatus and method for inspection of tubes in a boiler
CN117129491A (zh) * 2023-09-20 2023-11-28 广东天信电力工程检测有限公司 一种基于x射线的gis设备缺陷检测方法及系统

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
US4105972A (en) * 1976-04-09 1978-08-08 British Gas Corporation Pipeline inspection vehicle for detecting defects in pipeline walls
US5479100A (en) * 1994-05-10 1995-12-26 Gas Research Institute Method for detecting anomalies in pipes
RU2225977C1 (ru) * 2003-05-27 2004-03-20 ЗАО "Нефтегазкомплектсервис" Внутритрубный дефектоскоп
RU2240549C1 (ru) * 2003-09-25 2004-11-20 ЗАО "Нефтегазкомплектсервис" Внутритрубный дефектоскоп (варианты)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105972A (en) * 1976-04-09 1978-08-08 British Gas Corporation Pipeline inspection vehicle for detecting defects in pipeline walls
US5479100A (en) * 1994-05-10 1995-12-26 Gas Research Institute Method for detecting anomalies in pipes
RU2225977C1 (ru) * 2003-05-27 2004-03-20 ЗАО "Нефтегазкомплектсервис" Внутритрубный дефектоскоп
RU2240549C1 (ru) * 2003-09-25 2004-11-20 ЗАО "Нефтегазкомплектсервис" Внутритрубный дефектоскоп (варианты)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130081486A1 (en) * 2011-09-29 2013-04-04 Electric Power Research Institute, Inc. Apparatus and method for inspection of tubes in a boiler
US9146215B2 (en) * 2011-09-29 2015-09-29 Electric Power Research Institute, Inc. Apparatus and method for inspection of tubes in a boiler
US10048225B2 (en) 2011-09-29 2018-08-14 Electric Power Research Institute, Inc. Apparatus and method for inspection of tubes in a boiler
CN117129491A (zh) * 2023-09-20 2023-11-28 广东天信电力工程检测有限公司 一种基于x射线的gis设备缺陷检测方法及系统
CN117129491B (zh) * 2023-09-20 2024-03-29 广东天信电力工程检测有限公司 一种基于x射线的gis设备缺陷检测方法及系统

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