WO2016118991A1 - Procédé et dispositif pour mesurer la position d'un tube intérieur dans une conduite - Google Patents

Procédé et dispositif pour mesurer la position d'un tube intérieur dans une conduite Download PDF

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Publication number
WO2016118991A1
WO2016118991A1 PCT/AT2016/050010 AT2016050010W WO2016118991A1 WO 2016118991 A1 WO2016118991 A1 WO 2016118991A1 AT 2016050010 W AT2016050010 W AT 2016050010W WO 2016118991 A1 WO2016118991 A1 WO 2016118991A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner tube
measuring
tube
specimen
jacket tube
Prior art date
Application number
PCT/AT2016/050010
Other languages
German (de)
English (en)
Inventor
Maximilian WURMITZER
Maximilian Johannes WURMITZER
Michael Sternad
Original Assignee
Wurmitzer Maximilian
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 Wurmitzer Maximilian filed Critical Wurmitzer Maximilian
Priority to EP16704381.9A priority Critical patent/EP3250880A1/fr
Publication of WO2016118991A1 publication Critical patent/WO2016118991A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies

Definitions

  • the invention relates to a method and a device for measuring the position of an inner tube within a jacket tube, in which the inner tube extends.
  • the invention also relates to a method and an apparatus for producing a pipeline with such a jacket tube.
  • Pipelines of the type considered here are used in piping systems for the distribution of a fluid medium (gas or liquid), especially in district heating systems.
  • a fluid medium gas or liquid
  • one or more tubes are positioned in which the transported medium is embedded in a sheathing outer tube.
  • inner tube or media tube inner tube or "media tube”
  • the outer tube as a “jacket tube”.
  • the space between the tubes is usually filled with an insulating foam.
  • the production of the pipes on which the invention is based takes place in a production line.
  • the manufacturing process is as follows:
  • the media tubes are rolled up on tubular drums. Now one, two or more media tubes are brought by an adjustable apparatus in a defined position and pushed or pulled in a device in which the foam is introduced.
  • the media tubes and the foam are surrounded by a cup-shaped contour.
  • the foam spreads and tightly encloses the media tubes within the confines of the cup-shaped contour. If necessary, the foam is cooled over the bowl-shaped contour, since the chemical activation generates heat.
  • the jacket tube is applied by means of plastic extruder as an outer plastic shell.
  • Test methods with which the position of the media tubes is defined in the jacket tube are given by means of X-ray apparatus. These are very expensive and lead to increased effort in terms of safety, especially radiation protection. Other methods for checking the position are to break the foam skirt with a test specimen (e.g., a needle) and to probe the (harder) inner wall of the media tubes, resulting in leaks in the insulation.
  • a test specimen e.g., a needle
  • the inner tube can be checked for gross errors (tolerances) or mechanical damage by the test specimen at the same time.
  • test body which at least partially made of a magnetizable material - such. magnetizable iron and / or a permanent magnet - exists in the inner tube,
  • a device for measuring the position of an inner tube within a jacket tube comprising a guide device with which the jacket tube is guided along a predetermined path, and a measuring device surrounding or surrounding the path with at least one magnetic Sensor which is adapted to measure the location of a introduced into the inner tube specimen, which consists at least partially of a magnetizable material.
  • the outer tube position can be detected, which is e.g. with sensors of known types of arteries, and can be included in the position determination.
  • the test body is held in the inner tube by means of a positioning device in a predetermined desired position, which is accessible to detection by the at least one magnetic sensor. Taking tolerances into account, the test specimen can be kept within a certain nominal range. It is particularly advantageous if the positioning device generates a locally variable, preferably stationary, even more preferably stationary, magnetic field, by which the test specimen is held in the desired position. Alternatively, the specimen may be held by other means of position control, such as e.g. by a mechanical-type positioning means which runs along the tube.
  • At least two magnetic sensors can be used.
  • the sensors can be arranged side by side at the same height of the path of the jacket tube, offset by an angle; Alternatively or in combination, sensors can be arranged one behind the other along the path of the jacket tube.
  • the distance value between a magnetic sensor and the test specimen can be determined;
  • the location of the specimen can be calculated from a plurality of such distance values with respect to the locations of a plurality of sensors.
  • the invention is particularly suitable in a method for producing a pipeline having a jacket tube and at least one inner tube extending therein, in which the position of an inner tube is measured according to the method according to the invention, a deviation of the position thus measured from a desired position of the inner tube is determined and due the deviation thus determined, the position of the inner tube is readjusted.
  • a device for producing such a pipeline accordingly comprises a device according to the invention for measuring the position of an inner tube, a device for determining a deviation of the position of the inner tube from a desired position, and a device for adjusting the position of the inner tube to compensate for the deviation from the desired position of the inner tube.
  • Fig. 1 is an illustration of the measuring principle according to the invention with reference to a
  • Fig. 3 is a longitudinal sectional view of a measuring arrangement according to a first
  • Fig. 5 is a schematic overview of a manufacturing plant with an inventive
  • Measuring device in side view in longitudinal section
  • Fig. 6 is a circuit diagram of the electrical supply of the measuring device of Fig. 5, wherein Fig. 6a is a signal diagram of the generated measurement voltage;
  • Fig. 9 and 10 each a variant of the test specimen;
  • Fig. 11 Shaping of the foam material of the pipeline by half-shells;
  • Fig. 12 is a simplified electrical supply of the measuring device, wherein Fig. 12a a
  • Fig. 13 shows another embodiment of the manufacturing plant with mechanical support of the specimen.
  • a jacket tube 13 surrounds two mutually parallel media tubes 11, 12, wherein the space 14 between the media tubes 11, 12 and the jacket tube 13 is filled with an insulating foam.
  • the position of a media tube shown in the drawing using the example of the tube 11, measured by means of a test specimen 2, which is introduced into the media tube 11 to be measured.
  • the desired position of the media tubes 11, 12 in the jacket tube 13 is (as well as their other dimensions, such as diameter, thickness, etc.) specified and depends on the particular application of the pipeline.
  • the jacket tube 13 consists e.g. an inner layer of a flexible plastic film surrounding the insulating foam and an outer layer formed of a rigid plastic pipe (e.g., PVC).
  • the mandrel may include one or more layers.
  • the jacket tube is carried out along the production line by various apparatuses and system parts of known type, which set a defined position of the jacket tube.
  • the media tubes 11, 12 are made of a gas-tight plastic, for example.
  • the test piece 2 consists wholly or at least partly of a magnetizable material.
  • magnetizable material is meant here a material with high magnetic susceptibility, which in terms of magnetic properties of the Materials of Pipe 1 are different, allowing for magnetic detection and positioning of the test piece within the pipe.
  • the test specimen 2 is designed for example as Rundling or ball.
  • test specimens may be embodied as cylinders, spheres or similar bodies which may be stored or not stored, lubricated or preferably not lubricated.
  • the storage of a test specimen in the inner tube can be achieved, for example, by small rollers attached to the test specimen (cf., FIG. 10).
  • test body can also be designed as an active body, for example, equipped with sensors and a supplied via a cable connection or wireless transmission and receiving device.
  • the test piece 2 is held in the relevant media tube 11 by means of an externally applied magnetic field, with respect to the measuring system, in one place or in a limited area.
  • the generation of the magnetic field is effected by a positioning device 3.
  • the magnetic field is generated, for example by one or more coils, which are traversed by a direct and / or alternating current, and / or an arrangement of one or more permanent magnets.
  • the pipeline 1 is guided through the positioning device 3 along a predetermined path (symbol Z) according to an axial direction designated here as z-axis, which in FIG. 1 runs perpendicular to the plane of the paper.
  • This z-axis thus provides the desired longitudinal axis of the pipeline at the location of the positioning device.
  • the position of the positioning device 3 is eccentric to the center line of the pipeline 1, according to the (nominal) dimension by which the media tube 11 is disengaged from the center line (here the z-axis).
  • the attachment of the coil (s) or magnets in the Po sition ists device may be designed parallel or radially to the z-axis.
  • the test specimen 2 generally searches for the local maximum of the magnetic field along the path of the relevant media tube 11.
  • Figures 2a-c show exemplary designs of the positioning device.
  • Fig. 2a shows a first arrangement of a positioning device 31.
  • a bobbin 32 is designed as a solenoid whose axis is oriented parallel to the z-axis; the power supply V is indicated.
  • Fig. 2b shows a second arrangement of a positioning device 33.
  • a pair of coils, formed from coils 34a and 34b, is arranged radially to the z-axis.
  • ferromagnetic cores eg iron cores
  • Fig. 2c shows a third arrangement of a positioning device 35.
  • a suitably shaped core 36 e.g. rotationally symmetric about the z-axis with a cross section double horseshoe-like shape with e.g. axially oriented winding windings
  • the magnetic field can be directed to the desired position of the specimen and at the same time be designed at the desired position, for example, with a desired intensity profile.
  • the arrangements of the positioning devices may also be combined together to achieve reliable positioning at the desired location.
  • the individual magnetic components can be arranged offset from each other in the axial direction.
  • a radially arranged coil pair in the manner of the arrangement of FIG. 2b may be mounted on a device rotatable about an axis of rotation parallel to the z-axis.
  • a number of radial coil pairs may be arranged in a circle, offset from each other in the circumferential direction.
  • the positioning can, alternatively or in addition to the above-described magnetic positioning, also be effected by mechanical means.
  • a positioning in the axial direction by means of a fastened to the test piece leash, for example, a rope or wire made of non-magnetic material occur.
  • the test specimen can be directed and held to a desired position by the action of a fluid flow and / or associated pressure differential, for example by means of pressurized air introduced into the media tube or other suitable fluid.
  • the position of the specimen 2 is determined by a measuring device 4.
  • the determination of the position of the test piece 2 provides information about which position the media pipe 11 has.
  • the position of the specimen is determined by a measuring method in which the change of the magnetic field is measured.
  • dedicated measuring coils 41, 42 can be used.
  • two measuring coils 41, 42 are used, which are arranged at two different known positions radially adjacent to the desired position of the test piece 2 just outside the pipeline 1.
  • the measuring coils are offset from each other by an angle about the z-axis, preferably at an angle of 90 °, or another acute angle; in particular 360 ° / n (where n is an integer) when using several (up to n) measuring coils.
  • the distance to the test piece 2 can be determined, and due to the specific geometry, the current location of the test piece can be calculated and output, for example in Cartesian coordinates.
  • the measuring coils can be designed as passive or preferably active components.
  • For an active coil DC and / or AC voltage may be present.
  • a measuring method is carried out in which a magnetic field is generated by a coil 41 as a measuring coil, which is switched off after a predefined period. Immediately thereafter, by the same coil 41 and / or the other coil 42, the magnetic response (new curve) is measured. Due to the signal thus obtained, the distance between the measuring coil and the test specimen can be determined. This process is then repeated for the other coil 42.
  • the influence of the magnetic field of the positioning device 3 on the measuring coils 41, 42 must be taken into account.
  • Such an influence can be suppressed, for example, by the positioning device using a constant field (static magnetic field), while alternating fields can be used for the measuring coils.
  • alternating fields pick-up systems can be set up in a known manner in which generates an alternating field using a resonant circuit and by means of a compensated pair of pick-up coils and minor deviations of the magnetic field can be measured.
  • Each of the measuring coils 41 and 42 has special characteristics which, for example, output different voltage values with increasing or decreasing distance of the test body from the measuring coil. With the arrangement of two sensors at a given angle, the measurement characteristics of each coil being known, two voltage values are output. By an evaluation unit can be determined by these two voltage values, the position of the specimen.
  • FIG. 3 shows a further embodiment in which the measuring coils 38a, 38b are arranged offset from one another in the axial direction, for example one before and one after the positioning device 37, viewed along the path Z of the jacket tube.
  • the measuring coils 38a, 38b may be designed to be passive, for example.
  • Each measuring coil is flowed through by a part of the main magnetic field generated by the positioning device.
  • the axes of the measuring coils 38a, 38b are preferably aligned normal to the axial direction and parallel to the direction of the main magnetic field of the positioning device.
  • the magnetic field is changed.
  • an electrical voltage is induced in the coils, and the signals thus generated are evaluated and used to calculate the position of the test body and thus the media tube 11.
  • multiple measurements can be made with multiple sensors provided at different locations along the pipe or at different locations on the production line.
  • the sensors can be offset along the z-axis and / or angularly offset around the axis.
  • the DC magnetic field is superimposed on the position determination or regulation of the test body and with an AC magnetic field.
  • the AC field is used to measure the position of the specimen.
  • a separate test piece is used for each media pipe, and each test piece is held in an associated positioning device.
  • Fig. 4 shows an embodiment with two positioning devices 39, 40. These may for example be arranged offset in the axial direction against each other, or in a variant at the same axial height, but opposite each other.
  • Each positioning device generates an externally applied magnetic field, which determines and influences the axial position of the respectively associated test body 39, 40. Due to the staggered arrangement of the positioning device 39, 40, the respectively associated test pieces 11, 12 are held at different locations along the z-axis.
  • the sensors By suitable arrangement of the sensors (not shown), the position of each media tube 11, 12 can be detected. This allows the simultaneous measurement of two test specimens in a pipe system by respectively associated inductive sensors.
  • test according to the invention can be carried out on already finished pipelines (for example when cutting to length) or in any production step of the production of the pipelines.
  • a calibration may be carried out with a pipe used as a "reference pipe” prior to commencing the measurements during production, with the test specimen or bodies being introduced into the pipe and the measuring apparatus performing the measurement, which are then stored as reference values.
  • the measured actual values are then compared with the reference values, taking into account a predetermined or adjustable tolerance If the deviation exceeds the tolerance, a warning is issued.
  • a correction value can be calculated, which is returned to the production line via an interface and which is used to adjust the supply of the media tubes with respect to their lateral position in order to compensate for the deviation.
  • the transfer Cartesian coordinates of the position of the media tubes is also possible, making it possible to output the determined by the measuring system positions of the media tubes in valid for the manufacturing plant coordinates and to use in the positioning.
  • Figs. 5 to 8 illustrate another preferred embodiment for the manufacture of a pipeline 1 according to the invention.
  • FIG. 5 shows a schematic overview of a production plant 5 for a pipeline 1 with two media pipes, in which a position correction according to the invention is established.
  • the two media tubes 11, 12 are fed from the right in FIG. 5 (the feeders for the media tubes are not shown in FIG. 5 for the sake of clarity).
  • the position of the media tubes in the x and y directions (by means of 51 and 52) and their distance from one another (by means of 50) can be adjusted in a manner known per se; this positioning is controlled by the invention, as explained below.
  • the media pipes thus arranged then pass through a molding installation 57, at the inlet opening 53 of which a foam material is introduced via nozzles (not shown), which is formed by half-shells 54 (FIG.
  • the foam material is represented by a dot-hatch.
  • the half-shells 54 move with the foam and media tubes for the time required to solidify the foam material, thus to the exit port 55, and are then transported back to the entrance port 53.
  • the pipe passes through a measuring device 6 according to the invention, in which the position of the media pipes within the pipeline is determined by means of two test specimens.
  • the pipeline is then - not shown in the figure - continued to the left and rolled up there or cut into desired lengths.
  • the measuring device 6 transmits the result of the position determination to a control computer 7, which generates control signals 56 of the position correction for the adjusting devices from the latter and compares them with the predetermined desired positions. In this way results in a control loop, which provides a reliable adjustment of the desired position of the media tubes 11, 12 in the pipeline 1.
  • the electrical supply of the measuring device according to the invention is shown in the circuit diagram of FIG.
  • the coils of the measuring device are symbolized by an inductance L.
  • An alternating voltage from a voltage source Vs, for example 230 V Mains voltage, a transformer Ts and this downstream rectifier G is supplied.
  • a DC voltage Ui (FIG. 6a) is generated which serves to generate the magnetic constant field as a holding field for the test specimens.
  • the inductance LG also serves to decouple the DC voltage supply from the AC voltage supply, which supplies an AC voltage U F via a decoupling capacitor C F.
  • the alternating voltage U F is generated via a second transformer T F and serves as a measuring voltage for generating an alternating magnetic field.
  • the measuring voltage transformer T F is fed either by the mains voltage or a frequency generator V F ; For example, with the aid of a switch si, it is possible to choose between these two voltage sources. In this way, a voltage UM is generated, which is the load inductance L is supplied. As shown in FIG. 6a, the voltage UM is a DC voltage Ui superposed by an AC voltage UF.
  • FIG. 7 shows the arrangement of the measuring coils 61-68 in the measuring device 6 according to the invention.
  • the measuring coils 61 and 62 are used as sensors.
  • the lines K1 and K2 describe the characteristic curves of an exemplary measurement that belong to the measuring coils 61, 62, respectively; the point of intersection K of the two lines gives the calculated position of the test specimen and thus of the measured media tube with respect to the illustrated cross-sectional plane.
  • test specimen 23 shows the measuring device 6 in a longitudinal sectional view.
  • An advantageous embodiment of a test specimen 23 as a cylindrical "pig" is also shown therein
  • the test specimen 23 is designed as a cylindrical body with a head 231 made of a permanent magnetic material and an adjoining soft iron core 232.
  • the permanent magnet head 231 reliably supports the test specimen While the soft iron core 232 is detected by the arrangement of the measuring coils 61-68, the exciting coil 60 generates both the holding field for the test body 23 and the measuring field (alternating field) for the actual position measurement
  • the measuring coils can be as shown in this figure spaced from the holding field coils 60, for example, offset in the axial direction, be arranged.
  • the test specimen 24 of FIG. 9 has, in addition to the permanent-magnetic head 241 and adjoining soft iron core 242, one or more, preferably two, plastic bodies 243 which improve the sliding behavior within the media tube; For example, each such a body at the front and rear ends.
  • the plastic bodies are preferably bevelled, in the manner of a cylinder stub, in order to be able to more easily overcome any unevenness in the inner wall of the media pipe.
  • the outer edge of the plastic body can be provided with a number of radial recesses or a perforation; this allows any existing debris in the media tube to pass through the recesses and thus prevents accumulation / accumulation of contaminants on the front of the specimen.
  • a cylindrical test piece 25 with rollers is shown in FIG.
  • a ring of a plurality of rollers 253 is provided in each case.
  • the number of rollers per ring is at least three, preferably four or six, possibly even more.
  • Figure 11 illustrates the shaping of the tubing in the molding equipment 57 ( Figure 5) by a pair of half-shells 15 surrounding and enclosing the foam material 14 until solidified.
  • FIG. 12 a shows the generated measuring voltage U'M, which corresponds to a half-wave rectified voltage UF 2 .
  • the positioning of the specimen can also be done in a non-magnetic manner within the scope of the invention.
  • the test body can be guided gravitationally in a deflection, which is generated by a deflection roller, which from the top presses the conduit and this Uf örmig bends; in the depression thus located, the specimen is held by gravity.
  • FIG. 13 shows a variant of a production plant 5 'according to the invention, in which the positioning of the test body takes place via a positioning device 3' with mechanical anchoring.
  • the test piece 26 is held by an anchorage 28 by means of a twist-proof connection 27, for example a non-magnetic rod.
  • the anchor 28 can be mechanically held; however, it is preferably held by a magnetic field generated by an outer holding magnet 29 (thus combining mechanical magnetic holding of the specimen) and for this purpose can be equipped with a permanent magnetic material.
  • the position is measured magnetically at the location of the test specimen 26 with a measuring device 6 'as described above and can advantageously take place in the molding system 57, which shortens the control loop. As a result, significantly less waste can be produced, especially when starting up the production line.
  • the specimen may be active, i. it excites an alternating field itself, which is detected by measuring coils (not shown in Fig. 13).
  • the power supply of the test piece 26 is effected by means of a pickup part 58, which is excited inductively via an induction coil 59. In this way, not only the power supply, but also the transmission of control commands can be done contactlessly and wirelessly.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

Selon l'invention, la mesure de la position d'un tube intérieur (11) à l'intérieur d'un tube extérieur (13) dans lequel s'étend le tube intérieur (11) est réalisée par : introduction d'une éprouvette (2), constituée au moins partiellement d'un matériau magnétisable, dans le tube intérieur (11) ; guidage du tube extérieur le long d'une trajectoire prédéfinie (Z) passant par un dispositif de mesure (4) et mesure de l'emplacement de l'éprouvette au moyen d'au moins un capteur magnétique (41, 42) du dispositif de mesure (4) par rapport à la trajectoire, le ou les capteurs magnétiques étant placés à une position prédéfinie à l'extérieur du tube extérieur.
PCT/AT2016/050010 2015-01-27 2016-01-25 Procédé et dispositif pour mesurer la position d'un tube intérieur dans une conduite WO2016118991A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16704381.9A EP3250880A1 (fr) 2015-01-27 2016-01-25 Procédé et dispositif pour mesurer la position d'un tube intérieur dans une conduite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50047/2015 2015-01-27
ATA50047/2015A AT516787B1 (de) 2015-01-27 2015-01-27 Verfahren und vorrichtung zur messung der position eines innenrohres in einer rohrleitung

Publications (1)

Publication Number Publication Date
WO2016118991A1 true WO2016118991A1 (fr) 2016-08-04

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PCT/AT2016/050010 WO2016118991A1 (fr) 2015-01-27 2016-01-25 Procédé et dispositif pour mesurer la position d'un tube intérieur dans une conduite

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EP (1) EP3250880A1 (fr)
AT (1) AT516787B1 (fr)
WO (1) WO2016118991A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010033265A1 (fr) * 2008-09-19 2010-03-25 Analogic Corporation Inspection de conduite
JP4902032B1 (ja) * 2011-03-17 2012-03-21 茂治郎 清水 管内移動体探知用の発信器、管内移動体および管内移動体探知システム
WO2013189851A1 (fr) * 2012-06-19 2013-12-27 Enrichment Technology Company Ltd. Zweigniederlassung Deutschland Recherche de bouchons dans des systèmes de tubes
EP2752287A1 (fr) * 2013-01-02 2014-07-09 Proton Products International Limited Dispositif pour mesurer de produits industriels fabriqués avec des techniques d'extrusion

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3547023B2 (ja) * 1995-02-28 2004-07-28 東京瓦斯株式会社 二重管の近接距離測定方法
GB0421199D0 (en) * 2004-09-24 2004-10-27 Emtelle Uk Ltd Method of manufacturing a tube
DE102007004104A1 (de) * 2007-01-26 2008-07-31 Ksb Aktiengesellschaft Positionsdetektor für ein in einem Rohr bewegtes Teil
US8938938B2 (en) * 2008-05-11 2015-01-27 Tetra Laval Holdings & Finance S.A. Packaging and filling machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010033265A1 (fr) * 2008-09-19 2010-03-25 Analogic Corporation Inspection de conduite
JP4902032B1 (ja) * 2011-03-17 2012-03-21 茂治郎 清水 管内移動体探知用の発信器、管内移動体および管内移動体探知システム
WO2013189851A1 (fr) * 2012-06-19 2013-12-27 Enrichment Technology Company Ltd. Zweigniederlassung Deutschland Recherche de bouchons dans des systèmes de tubes
EP2752287A1 (fr) * 2013-01-02 2014-07-09 Proton Products International Limited Dispositif pour mesurer de produits industriels fabriqués avec des techniques d'extrusion

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AT516787B1 (de) 2016-11-15
EP3250880A1 (fr) 2017-12-06
AT516787A1 (de) 2016-08-15

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