WO2024104751A1 - Positioning device of a clamp-on ultrasonic measuring apparatus, clamp-on ultrasonic transducer, clamp-on ultrasonic measuring device, and tool carriage - Google Patents

Positioning device of a clamp-on ultrasonic measuring apparatus, clamp-on ultrasonic transducer, clamp-on ultrasonic measuring device, and tool carriage Download PDF

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Publication number
WO2024104751A1
WO2024104751A1 PCT/EP2023/079804 EP2023079804W WO2024104751A1 WO 2024104751 A1 WO2024104751 A1 WO 2024104751A1 EP 2023079804 W EP2023079804 W EP 2023079804W WO 2024104751 A1 WO2024104751 A1 WO 2024104751A1
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WO
WIPO (PCT)
Prior art keywords
bearing
pipeline
ultrasonic transducer
pair
clamp
Prior art date
Application number
PCT/EP2023/079804
Other languages
German (de)
French (fr)
Inventor
Andreas Berger
Roberto Vitali
Beat Kissling
Sascha Grunwald
Thomas Jahn
Quirin MÜLLER
Original Assignee
Endress+Hauser Flowtec 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 Endress+Hauser Flowtec Ag filed Critical Endress+Hauser Flowtec Ag
Publication of WO2024104751A1 publication Critical patent/WO2024104751A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q9/00—Arrangements for supporting or guiding portable metal-working machines or apparatus
    • B23Q9/0014—Portable machines provided with or cooperating with guide means supported directly by the workpiece during action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/02—Milling surfaces of revolution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B23C3/122—Trimming or finishing edges, e.g. deburring welded corners of pipes or cylinders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • 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
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic 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
    • G01N29/222—Constructional or flow details for analysing fluids
    • 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
    • G01N29/223—Supports, positioning or alignment in fixed 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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
    • B23C2270/08—Clamping mechanisms or provision for clamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
    • B23C2270/20—Milling external areas of components
    • 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
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02836—Flow rate, liquid level

Definitions

  • the invention relates to a positioning device of a clamp-on ultrasonic measuring device for positioning at least one ultrasonic transducer or a tool on a media-carrying pipeline, an ultrasonic transducer that can be used on the positioning device, a tool slide that can be used on the positioning device and such a clamp-on ultrasonic measuring device.
  • Clamp-on ultrasonic measuring devices such as those shown in DE102016119910A1
  • Fastening straps or fastening bands are usually used to attach such ultrasonic transducers.
  • the contact force is not large enough for good ultrasonic signal coupling between the ultrasonic transducer and the pipeline, or the positioning of the ultrasonic transducers is not precise enough, so that the theoretically achievable measurement quality is very difficult to achieve.
  • the object of the invention is therefore to better exploit the measuring potential of a clamp-on ultrasonic measuring device.
  • the object is achieved by a positioning device according to independent claim 1, by a tool carriage according to independent claim 10, by a clamp-on ultrasonic transducer according to independent claim 12 and by a clamp-on ultrasonic measuring device according to independent claim 15.
  • the mounting rails can be precisely aligned and provide an engagement point for each ultrasonic transducer so that it can be moved and positioned safely and precisely along the rails.
  • the ultrasonic transducer can be positioned at a point on a pipe wall that has previously been machined using a tool and pressed into place without tilting.
  • the ultrasonic measuring device can, for example, be a measuring device for measuring the speed of sound or the attenuation of the medium.
  • a single ultrasonic transducer can be sufficient for this. But it can also be a flow meter.
  • one or more pairs of ultrasonic transducers are usually used to implement a transit time or transit time difference measuring principle.
  • the distance is, for example, at least 2 millimeters and preferably at least 5 millimeters.
  • the respective clamping device is designed to generate a contact force of at least 500 Newtons, and in particular at least 800 Newtons and preferably at least 1000 Newtons.
  • At least one ultrasonic transducer can be attached with a high contact force.
  • the clamping device has a compensation device which is designed to at least partially compensate for changes in pipeline dimensions caused by temperature fluctuations.
  • the clamping force of the clamping device can be kept largely constant or at least sufficiently high to hold the ultrasonic transducers securely. This promotes long-term stability of ultrasonic transducer positioning.
  • the tensioning device has at least one tensioning element, such as a band, a chain or a belt, which at least one tensioning element is designed to act against a counter device in order to build up a contact force.
  • the locking device can, for example, be the pipeline or a clamping device located on an opposite side of the pipeline.
  • the clamping element is designed to encompass the pipeline and to be fastened to a bearing device and to press at least one of the bearing devices against the outer surface of the pipeline.
  • the positioning device has two pairs of fastening rails which are arranged on opposite sides of the pipeline, wherein the positioning device has two pairs of bearing devices, wherein a pair of the bearing devices is designed to support a pair of fastening rails, wherein a clamping device is designed to clamp two bearing devices of different pairs of bearing devices against each other.
  • each bearing device has at least one rotationally movable element, wherein a rotation axis of each rotational element runs parallel to the pipeline axis when the bearing device is positioned, wherein the clamping element is mounted on the at least one rotationally movable element.
  • the fastening rails and the bearing devices are each made of a metal such as steel or in particular a stainless steel.
  • a tool carriage according to the invention for a tool for machining an outer wall of a pipeline is designed to be mounted on a pair of fastening rails of a positioning device according to the invention, wherein the tool carriage has at least three positioning bearings, in particular roller or plain bearings, wherein each fastening rail is assigned at least one of the positioning bearings, and wherein the positioning bearings define a first bearing plane, wherein the tool carriage has a tool mounting device for mounting the tool.
  • a milling machine can be used, for example, to smooth an outer surface of the pipeline. Since the fastening rails define a position of the tool slide and an ultrasonic transducer along a pipeline axis, a clamp-on ultrasonic transducer can be positioned precisely and without tilting on the machined outer surface after machining the outer surface.
  • the tool carriage has at least one safety bearing, in particular a roller or plain bearing, which is arranged in a second bearing plane perpendicular to the first bearing plane and parallel to the fastening rails and has a distance of in particular at least 5 mm from the first bearing plane, wherein the at least one safety bearing can be positioned securely and robustly on one of the fastening rails.
  • at least one safety bearing in particular a roller or plain bearing, which is arranged in a second bearing plane perpendicular to the first bearing plane and parallel to the fastening rails and has a distance of in particular at least 5 mm from the first bearing plane, wherein the at least one safety bearing can be positioned securely and robustly on one of the fastening rails.
  • the tool carriage can be prevented from slipping when the rail plane is aligned vertically and the fastening rails are aligned horizontally. Since the safety bearing is arranged at a 90° angle to the positioning bearings, the safety bearing provides support in relation to the associated fastening rail. It can therefore be hung on a rail and is supported by another rail to prevent it from tipping sideways.
  • the ultrasonic transducer mounting device has an engagement means for each fastening rail, by means of which engagement means the clamp-on ultrasonic transducer can be displaced parallel to the fastening rails and can be fixedly mounted perpendicular to the rail plane.
  • the engagement means each have a recess which is designed to receive the respective fastening rail and to encompass it in sections along a circumference of the fastening rail, wherein the recesses are spatially oriented in the same direction.
  • a clamp-on ultrasonic measuring device comprises a positioning device according to the invention according to one of the preceding claims; at least one ultrasonic transducer according to the invention, in particular at least one pair of ultrasonic transducers, each ultrasonic transducer having an ultrasonic transducer mounting device for mounting on the positioning device; an electronic measuring/operating circuit for operating the at least one ultrasonic transducer, for evaluating measuring signals of the at least one ultrasonic transducer and for providing measured values of at least one measured variable such as flow rate or speed of sound of a medium flowing through a pipeline.
  • Fig. 1 a shows an oblique view of an exemplary clamp-on ultrasonic measuring device according to the invention with an exemplary positioning device according to the invention.
  • Fig. 1 b shows a further embodiment of an exemplary clamp-on ultrasonic measuring device according to the invention.
  • Fig. 2 a shows an oblique view of an exemplary bearing device according to the invention of a positioning device according to the invention.
  • Fig. 2 b shows a section through the bearing device shown in Fig. 2 a).
  • Fig. 3 shows an exemplary ultrasonic transducer mounting device according to the invention.
  • Figs. 4 a) and 4 b) outline an exemplary tool carriage according to the invention.
  • Fig. 1 a shows an exemplary clamp-on ultrasonic measuring device 1 according to the invention with an exemplary positioning device 10 according to the invention.
  • Clamp-on ultrasonic transducers 20 are attached to an outer surface 52 of a media-carrying pipeline 50 and are designed to radiate and receive ultrasonic signals into the pipeline.
  • An electronic measuring/operating circuit 30 is designed to operate the ultrasonic transducers 20 and to evaluate measurement signals from the ultrasonic transducers in order to create measured values for a measured variable.
  • the ultrasonic measuring device can be designed, for example, to measure a flow rate or a speed of sound, for example by measuring the transit time or transit time difference of the medium in the pipeline.
  • the positioning device 10 has, as shown here by way of example, two fastening rails 11 which are oriented parallel to a pipeline axis 51 and define a rail plane.
  • the fastening rails are each supported at their ends by a bearing device 12, with a distance being set up between the outer surface 52 and the rails.
  • an engagement means (see Fig. 3) of an ultrasonic transducer mounting device 23 can engage in an engagement 13 between the pipeline and the fastening rail 11, so that the ultrasonic transducer 20 can be guided safely and precisely without the risk of tilting before being fixed along the fastening rails.
  • a clamping device 14 encompasses the pipeline and a bearing device 12 by means of a clamping element 14.2 and causes a contact force on the bearing device.
  • the clamping element can, for example, be made into a loop or a closed band.
  • the clamping device brings about a contact force of at least 100 Newtons, and in particular at least 800 Newtons and preferably at least 1000 Newtons. In this way, the ultrasonic transducers can be pressed against the pipeline with a sufficiently high contact force by means of the ultrasonic transducer mounting device.
  • An ultrasonic transducer 20 has a coupling body 22 and a transducer element 21, which transducer element is designed to generate and detect ultrasonic signals.
  • the coupling body is designed to conduct the ultrasonic signals between the pipeline and the transducer element and to acoustically couple them.
  • Fig. 1 b shows another exemplary clamp-on ultrasonic measuring device according to the invention, in which ultrasonic transducers are arranged on two sides of the pipeline, with two pairs of fastening rails 11 being arranged on opposite sides of the pipeline and being supported by two pairs of bearing devices 12.
  • One clamping device 14 is designed to clamp two bearing devices of different pairs of bearing devices against each other.
  • Essential to the invention is the provision of a positioning device according to the invention for the purpose of clean and precise positioning of the ultrasonic transducers.
  • Fig. 2 a) and b) show an exemplary bearing device 12 according to the invention for supporting one end of two fastening rails 11 of a pair of fastening rails in an oblique view and in a section.
  • the bearing device has, for example, two pairs of support surfaces 12.1, with support surfaces of each pair of support surfaces lying in a cross-sectional plane of the pipeline when the bearing device is in position. In this way, it is ensured that the fastening rails run parallel to a pipeline axis.
  • the bearing device can, as shown here by way of example, have a compensation device 12.4, which is designed to at least partially compensate for changes in pipeline dimensions caused by temperature fluctuations. For example, a spring mechanism under pretension can hold the tensioning element at a target tension.
  • the bearing device can, as shown here by way of example, have a rotationally movable element 12.2 for supporting the tensioning element, so that an asymmetrical tension distribution in the tensioning element can be avoided.
  • the compensation device and bearing device can be set up independently of each other.
  • a rotation axis of the rotating element is parallel to the pipeline axis when assembled.
  • Fig. 3 shows an oblique view of an exemplary ultrasonic transducer mounting device 23 according to the invention, which is designed to press a coupling body 22 of the clamp-on ultrasonic transducer against the pipeline by means of a fastening means 23.2.
  • the ultrasonic transducer mounting device 23 has engagement means 23.1, which are designed to engage in the engagement 13 (see Fig. 1) between the fastening rail and the pipeline. In this way, the clamp-on ultrasonic transducer can be moved parallel to the fastening rails and can be mounted firmly perpendicular to the rail plane.
  • the engagement means 23.1 can each have a recess 23.11, which is designed to receive the respective fastening rail 11 and to encompass it in sections along a circumference of the fastening rail, wherein the recesses are spatially oriented in the same direction. In this way, the ultrasonic transducer mounting device can be set up easily and safely.
  • Fig. 4 a outlines an exemplary tool carriage 40 according to the invention for a tool 60 (see Fig. 4 b)) for machining an outer wall 51 of a pipeline 50, wherein the tool carriage 40 is designed to be mounted on a pair of fastening rails 11 of a positioning device 10 according to one of the preceding claims.
  • the tool carriage can have three positioning bearings 41, which are designed in particular as roller or plain bearings. At least one of the positioning bearings is assigned to each fastening rail 11, so that the positioning bearings define a first bearing plane.
  • the tool carriage has a tool mounting device 42 for mounting the tool. In this way, the tool can be moved precisely parallel to the rails.
  • the tool can also have a height adjustment in order to set a machining feed.
  • the tool carriage can have at least one safety bearing 43, in particular a roller or plain bearing, as shown here, which is arranged in a second bearing plane perpendicular to the first bearing plane and parallel to the fastening rails and is at a distance from the first bearing plane, so that the at least one safety bearing can be positioned on one of the fastening rails.
  • at least one safety bearing 43 in particular a roller or plain bearing, as shown here, which is arranged in a second bearing plane perpendicular to the first bearing plane and parallel to the fastening rails and is at a distance from the first bearing plane, so that the at least one safety bearing can be positioned on one of the fastening rails.
  • Fig. 4 b shows an example of the direction in which a tool 60 is mounted or dismounted.

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  • General Health & Medical Sciences (AREA)
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Abstract

The invention relates to a positioning device (1) of a clamp-on ultrasonic measuring apparatus (10) for positioning at least one ultrasonic transducer (20) or a tool (60) on a media-conveying pipeline (50), comprising: at least one pair of fastening rails (11) designed for positioning and fastening at least one ultrasonic transducer of the at least one ultrasonic transducer or a tool for processing an outer surface (52) of the pipeline, wherein the fastening rails are designed to be aligned in parallel with the pipeline axis (51); at least one pair of bearing devices (12) designed for bearing in each case at least one pair of fastening rails (11), wherein the fastening rails have a minimum distance from the outer surface of the pipeline, wherein the minimum distance is designed to provide an engagement (13) between the fastening rail and the pipeline; a clamping device (14) for each bearing device of a pair of bearing devices (14); wherein each bearing device comprises at least one pair of contact surfaces (12.1), wherein contact surfaces of each pair of contact surfaces each lie in a cross-sectional plane (53) of the pipeline when the bearing device is positioned.

Description

Positioniervorrichtung eines Clamp-On-Ultraschall-Messgeräts, ein Clamp-On- Ultraschallwandler, ein Clamp-On-Ultraschall-Messgerät und ein WerkzeugschlittenPositioning device of a clamp-on ultrasonic measuring device, a clamp-on ultrasonic transducer, a clamp-on ultrasonic measuring device and a tool slide
Die Erfindung betrifft eine Positioniervorrichtung eines Clamp-On-Ultraschall-Messgeräts zur Positionierung mindestens eines Ultraschallwandlers oder eines Werkzeugs an einer medienführenden Rohrleitung, einen an der Positioniervorrichtung einsetzbaren Ultraschallwandler, einen an der Positioniervorrichtung einsetzbaren Werkzeugschlitten und ein solches Clamp-On- Ultraschall-Messgerät. The invention relates to a positioning device of a clamp-on ultrasonic measuring device for positioning at least one ultrasonic transducer or a tool on a media-carrying pipeline, an ultrasonic transducer that can be used on the positioning device, a tool slide that can be used on the positioning device and such a clamp-on ultrasonic measuring device.
Clamp-On-Ultraschall-Messgeräte, wie beispielsweise in der DE102016119910A1 gezeigt, weisen Ultraschallwandler auf, welche an einer Außenseite von medienführenden Rohrleitungen befestigt werden. Üblicherweise kommen zur Befestigung solcher Ultraschallwandler beispielsweise Befestigungsgurte oder Befestigungsbänder zum Einsatz. Jedoch ist bei herkömmlichen Lösungen entweder eine Anpresskraft für eine gute Ultraschallsignalkopplung zwischen Ultraschallwandler und Rohrleitung nicht groß genug, oder eine Präzision einer Positionierung der Ultraschallwandler nicht gut genug, so dass eine theoretisch erreichbare Messqualität nur sehr schwer zu erreichen ist.Clamp-on ultrasonic measuring devices, such as those shown in DE102016119910A1, have ultrasonic transducers that are attached to the outside of media-carrying pipelines. Fastening straps or fastening bands are usually used to attach such ultrasonic transducers. However, with conventional solutions, either the contact force is not large enough for good ultrasonic signal coupling between the ultrasonic transducer and the pipeline, or the positioning of the ultrasonic transducers is not precise enough, so that the theoretically achievable measurement quality is very difficult to achieve.
Aufgabe der Erfindung ist es daher, ein Messpotential eines Clamp-On-Ultraschall-Messgeräts besser auszuschöpfen. The object of the invention is therefore to better exploit the measuring potential of a clamp-on ultrasonic measuring device.
Die Aufgabe wird gelöst durch eine Positioniervorrichtung gemäß dem unabhängigen Anspruch 1 , durch einen Werkzeugschlitten gemäß dem unabhängigen Anspruch 10, durch einen Clamp-On- Ultraschallwandler gemäß dem unabhängigen Anspruch 12 sowie durch ein Clamp-On-Ultraschall- Messgerät gemäß dem unabhängigen Anspruch 15. The object is achieved by a positioning device according to independent claim 1, by a tool carriage according to independent claim 10, by a clamp-on ultrasonic transducer according to independent claim 12 and by a clamp-on ultrasonic measuring device according to independent claim 15.
Eine erfindungsgemäße Positioniervorrichtung eines Clamp-On-Ultraschall-Messgeräts zur Positionierung mindestens eines Ultraschallwandlers oder eines Werkzeugs an einer medienführenden Rohrleitung mit einer Rohrleitungsachse umfasst zumindest ein Paar Befestigungsschienen eingerichtet zum Positionieren und Befestigen mindestens eines Ultraschallwandlers des zumindest einen Ultraschallwandlers oder eines Werkzeugs zum Bearbeiten einer Außenfläche der Rohrleitung, wobei die Befestigungsschienen dazu eingerichtet sind, parallel zur Rohrleitungsachse ausgerichtet zu werden, wobei ein Paar Befestigungsschienen jeweils eine Schienenebene definieren; zumindest ein Paar Lagervorrichtungen eingerichtet zum Lagern jeweils eines Paars von Befestigungsschienen, wobei die Befestigungsschienen einen Abstand zur Außenfläche der Rohrleitung aufweisen, wobei der Abstand dazu eingerichtet ist, einen Eingriff zwischen Befestigungsschiene und Rohrleitung zu bieten; für jede Lagervorrichtung eines Paars von Lagervorrichtungen jeweils eine Spannvorrichtung, welche dazu eingerichtet ist, mindestens eine der Lagervorrichtungen des zumindest einen Paars von Lagervorrichtungen gegen die Außenfläche der Rohrleitung zu pressen; wobei jede Lagervorrichtung zumindest ein Paar Auflageflächen aufweist, wobei Auflageflächen jedes Paars von Auflageflächen bei positionierter Lagervorrichtung in jeweils einer Querschnittsebene der Rohrleitung liegen. A positioning device according to the invention of a clamp-on ultrasonic measuring device for positioning at least one ultrasonic transducer or a tool on a media-carrying pipeline with a pipeline axis comprises at least one pair of fastening rails set up for positioning and fastening at least one ultrasonic transducer of the at least one ultrasonic transducer or a tool for processing an outer surface of the pipeline, wherein the fastening rails are set up to be aligned parallel to the pipeline axis, wherein a pair of fastening rails each define a rail plane; at least one pair of bearing devices set up to support a pair of fastening rails each, wherein the fastening rails are at a distance from the outer surface of the pipeline, wherein the distance is set up to provide engagement between the fastening rail and the pipeline; for each bearing device of a pair of bearing devices, a clamping device which is designed to press at least one of the bearing devices of the at least one pair of bearing devices against the outer surface of the pipeline; wherein each bearing device has at least one pair of support surfaces, wherein support surfaces of each pair of support surfaces lie in a respective cross-sectional plane of the pipeline when the bearing device is positioned.
Auf diese Weise können die Befestigungsschienen präzise ausgerichtet werden und bieten einem Ultraschallwandler jeweils einen Eingriff, so dass er entlang der Schienen sicher und präzise bewegt und positioniert werden kann. In this way, the mounting rails can be precisely aligned and provide an engagement point for each ultrasonic transducer so that it can be moved and positioned safely and precisely along the rails.
Dadurch kann beispielsweise der Ultraschallwandler an einer vorher durch ein Werkzeug bearbeiteten Stelle einer Wandung der Rohrleitung positioniert und ohne Verkippung angepresst werden. This means that, for example, the ultrasonic transducer can be positioned at a point on a pipe wall that has previously been machined using a tool and pressed into place without tilting.
Das Ultraschall-Messgerät kann beispielsweise ein Messgerät zur Messung einer Schallgeschwindigkeit oder einer Dämpfung des Mediums sein. Dazu kann ein einzelner Ultraschallwandler bereits ausreichend sein. Es kann aber auch ein Durchflussmessgerät sein. In diesem Falle werden üblicherweise ein oder mehrere Paare von Ultraschallwandlern verwendet, um ein Laufzeit- oder Laufzeitdifferenzenmessprinzip umzusetzen. The ultrasonic measuring device can, for example, be a measuring device for measuring the speed of sound or the attenuation of the medium. A single ultrasonic transducer can be sufficient for this. But it can also be a flow meter. In this case, one or more pairs of ultrasonic transducers are usually used to implement a transit time or transit time difference measuring principle.
Der Abstand beträgt beispielsweise mindestens 2 Millimeter und bevorzugt mindestens 5 Millimeter.The distance is, for example, at least 2 millimeters and preferably at least 5 millimeters.
In einer Ausgestaltung ist die jeweils Spannvorrichtung dazu eingerichtet, eine Anpresskraft von jeweils mindestens 500 Newton, und insbesondere mindestens 800 Newton und bevorzugt mindestens 1000 Newton zu erzeugen. In one embodiment, the respective clamping device is designed to generate a contact force of at least 500 Newtons, and in particular at least 800 Newtons and preferably at least 1000 Newtons.
Auf diese Weise kann der mindestens eine Ultraschallwandler mit hoher Anpresskraft befestigt werden. In this way, at least one ultrasonic transducer can be attached with a high contact force.
In einer Ausgestaltung weist die Spannvorrichtung eine Kompensationsvorrichtung auf, welche dazu eingerichtet ist, temperaturschwankungsbedingte Änderungen von Rohrleitungsabmessungen zumindest teilweise zu kompensieren. In one embodiment, the clamping device has a compensation device which is designed to at least partially compensate for changes in pipeline dimensions caused by temperature fluctuations.
Auf diese Weise kann eine Anpresskraft der Spannvorrichtung weitgehend konstant oder zumindest ausreichend hoch gehalten werden, um die Ultraschallwandler sicher zu halten. Dies begünstigt eine Langzeitstabilität einer Ultraschallwandlerpositionierung. In this way, the clamping force of the clamping device can be kept largely constant or at least sufficiently high to hold the ultrasonic transducers securely. This promotes long-term stability of ultrasonic transducer positioning.
In einer Ausgestaltung weist die Spannvorrichtung jeweils zumindest ein Spannelement wie beispielsweise ein Band, eine Kette oder ein Gurt auf, welches mindestens eine Spannelement dazu eingerichtet ist, zwecks Aufbaus einer Anpresskraft gegen eine Kontervorrichtung zu wirken. Die Kontervorrichtung kann beispielsweise die Rohrleitung oder eine auf einer gegenüberliegenden Seite der Rohrleitung befindliche Spannvorrichtung sein. In one embodiment, the tensioning device has at least one tensioning element, such as a band, a chain or a belt, which at least one tensioning element is designed to act against a counter device in order to build up a contact force. The locking device can, for example, be the pipeline or a clamping device located on an opposite side of the pipeline.
In einer Ausgestaltung ist das Spannelement dazu eingerichtet, die Rohrleitung zu umgreifen und an einer Lagervorrichtung befestigt zu werden und zumindest eine der Lagervorrichtungen gegen die Außenfläche der Rohrleitung zu pressen. In one embodiment, the clamping element is designed to encompass the pipeline and to be fastened to a bearing device and to press at least one of the bearing devices against the outer surface of the pipeline.
In einer Ausgestaltung weist die Positioniervorrichtung zwei Paar Befestigungsschienen auf, welche auf gegenüberliegenden Seiten der Rohrleitung angeordnet sind, wobei die Positioniervorrichtung zwei Paar Lagervorrichtungen aufweist, wobei jeweils ein Paar der Lagervorrichtungen dazu eingerichtet ist, jeweils ein Paar Befestigungsschienen zu lagern, wobei jeweils eine Spannvorrichtung dazu eingerichtet ist, zwei Lagervorrichtungen verschiedener Paare Lagervorrichtungen gegeneinander zu spannen. In one embodiment, the positioning device has two pairs of fastening rails which are arranged on opposite sides of the pipeline, wherein the positioning device has two pairs of bearing devices, wherein a pair of the bearing devices is designed to support a pair of fastening rails, wherein a clamping device is designed to clamp two bearing devices of different pairs of bearing devices against each other.
In einer Ausgestaltung weist jede Lagervorrichtung zumindest ein rotatorisch bewegliches Element auf, wobei eine Rotationsachse jedes rotatorischen Elements bei positionierter Lagervorrichtung parallel zur Rohrleitungsachse verläuft, wobei das Spannelement auf dem mindestens einen rotatorisch beweglichen Element gelagert ist. In one embodiment, each bearing device has at least one rotationally movable element, wherein a rotation axis of each rotational element runs parallel to the pipeline axis when the bearing device is positioned, wherein the clamping element is mounted on the at least one rotationally movable element.
Auf diese Weise können Asymmetrien in Spannkräften des Spannelements kompensiert werden.In this way, asymmetries in the clamping forces of the clamping element can be compensated.
In einer Ausgestaltung sind die Befestigungsschienen sowie die Lagervorrichtungen jeweils aus einem Metall wie beispielsweise Stahl oder insbesondere einem rostfreien Stahl hergestellt sind.In one embodiment, the fastening rails and the bearing devices are each made of a metal such as steel or in particular a stainless steel.
Ein erfindungsgemäßer Werkzeugschlitten für ein Werkzeug zum Bearbeiten einer Außenwand einer Rohrleitung ist dazu eingerichtet, an einem Paar Befestigungsschienen einer erfindungsgemäßen Positioniervorrichtung gelagert zu werden, wobei der Werkzeugschlitten zumindest drei Positionierlager, insbesondere Roll- oder Gleitlager aufweist, wobei jeder Befestigungsschiene zumindest eines der Positionierlager zugeordnet ist, und wobei die Positionierlager eine erste Lagerebene definieren, wobei der Werkzeugschlitten eine Werkzeugmontiervorrichtung zur Montage des Werkzeugs aufweist. A tool carriage according to the invention for a tool for machining an outer wall of a pipeline is designed to be mounted on a pair of fastening rails of a positioning device according to the invention, wherein the tool carriage has at least three positioning bearings, in particular roller or plain bearings, wherein each fastening rail is assigned at least one of the positioning bearings, and wherein the positioning bearings define a first bearing plane, wherein the tool carriage has a tool mounting device for mounting the tool.
Mit Hilfe des erfindungsgemäßen Werkzeugschlittens kann beispielsweise eine Fräse dazu genutzt werden, eine Außenfläche der Rohrleitung zu glätten. Da die Befestigungsschienen eine Position des Werkzeugschlittens sowie eines Ultraschallwandlers entlang einer Rohrleitungsachse definieren, kann nach Bearbeitung der Außenfläche ein Clamp-On-Ultraschallwandler präzise und ohne Verkippung auf der bearbeiteten Außenfläche positioniert werden. In einer Ausgestaltung weist der Werkzeugschlitten zumindest ein Sicherheitslager, insbesondere Roll- oder Gleitlager auf, welches in einer zweiten Lagerebene senkrecht zur ersten Lagerebene und parallel zu den Befestigungsschienen angeordnet ist und einen Abstand von insbesondere mindestens 5 mm zur ersten Lagerebene aufweist, wobei das zumindest eine Sicherheitslager sicher und robust auf einer der Befestigungsschienen positionierbar ist. With the aid of the tool slide according to the invention, a milling machine can be used, for example, to smooth an outer surface of the pipeline. Since the fastening rails define a position of the tool slide and an ultrasonic transducer along a pipeline axis, a clamp-on ultrasonic transducer can be positioned precisely and without tilting on the machined outer surface after machining the outer surface. In one embodiment, the tool carriage has at least one safety bearing, in particular a roller or plain bearing, which is arranged in a second bearing plane perpendicular to the first bearing plane and parallel to the fastening rails and has a distance of in particular at least 5 mm from the first bearing plane, wherein the at least one safety bearing can be positioned securely and robustly on one of the fastening rails.
Auf diese Weise kann ein Abrutschen des Werkzeugschlittens bei senkrechter Ausrichtung der Schienenebene sowie waagerechter Ausrichtung der Befestigungsschienen verhindert werden. Da das Sicherheitslager einen 90°-Winkel zu den Positionierlagern angeordnet ist, bietet das Sicherheitslager einen Halt gegenüber der zugehörigen Befestigungsschiene. Es kann somit an eine Schiene gehängt werden und wird durch eine andere Schiene gegen seitliches Verkippen gestützt.In this way, the tool carriage can be prevented from slipping when the rail plane is aligned vertically and the fastening rails are aligned horizontally. Since the safety bearing is arranged at a 90° angle to the positioning bearings, the safety bearing provides support in relation to the associated fastening rail. It can therefore be hung on a rail and is supported by another rail to prevent it from tipping sideways.
Ein erfindungsgemäßer Clamp-On-Ultraschallwandler eingerichtet für eine erfindungsgemäße Positioniervorrichtung umfasst ein Wandlerelement zum Erzeugen und Erfassen von Ultraschallsignalen; einen Koppelkörper zum Übertragen von Ultraschallsignalen zwischen Rohrleitung und Wandlerelement; eine Ultraschallwandlermontiervorrichtung zur Montage an der Positioniervorrichtung; A clamp-on ultrasonic transducer according to the invention configured for a positioning device according to the invention comprises a transducer element for generating and detecting ultrasonic signals; a coupling body for transmitting ultrasonic signals between the pipeline and the transducer element; an ultrasonic transducer mounting device for mounting on the positioning device;
In einer Ausgestaltung weist die Ultraschallwandlermontiervorrichtung ein Eingriffsmittel für jede Befestigungsschiene auf, mittels welchen Eingriffsmitteln der Clamp-On-Ultraschallwandler parallel zu den Befestigungsschienen verschiebbar ist, und senkrecht zur Schienenebene fest lagerbar ist.In one embodiment, the ultrasonic transducer mounting device has an engagement means for each fastening rail, by means of which engagement means the clamp-on ultrasonic transducer can be displaced parallel to the fastening rails and can be fixedly mounted perpendicular to the rail plane.
In einer Ausgestaltung weisen die Eingriffsmittel jeweils eine Einbuchtung auf, welche dazu eingerichtet sind, die jeweilige Befestigungsschiene aufzunehmen und entlang eines Umfangs der Befestigungsschiene abschnittsweise zu umgreifen, wobei die Einbuchtungen räumlich gleichgerichtet orientiert sind. In one embodiment, the engagement means each have a recess which is designed to receive the respective fastening rail and to encompass it in sections along a circumference of the fastening rail, wherein the recesses are spatially oriented in the same direction.
Ein erfindungsgemäßes Clamp-On-Ultraschall-Messgerät umfasst eine erfindungsgemäße Positioniervorrichtung nach einem der vorigen Ansprüche; zumindest einen erfindungsgemäßen Ultraschallwandler, insbesondere mindestens ein Paar Ultraschallwandler, wobei jeder Ultraschallwandler eine Ultraschallwandlermontiervorrichtung zur Montage an der Positioniervorrichtung aufweist; eine elektronische Mess-/Betriebsschaltung zum Betreiben des zumindest einen Ultraschallwandlers, zum Auswerten von Messsignalen des zumindest einen Ultraschallwandlers und zu Bereitstellen von Messwerten mindestens einer Messgröße wie beispielsweise Durchfluss oder Schallgeschwindigkeit eines durch eine Rohrleitung strömenden Mediums. A clamp-on ultrasonic measuring device according to the invention comprises a positioning device according to the invention according to one of the preceding claims; at least one ultrasonic transducer according to the invention, in particular at least one pair of ultrasonic transducers, each ultrasonic transducer having an ultrasonic transducer mounting device for mounting on the positioning device; an electronic measuring/operating circuit for operating the at least one ultrasonic transducer, for evaluating measuring signals of the at least one ultrasonic transducer and for providing measured values of at least one measured variable such as flow rate or speed of sound of a medium flowing through a pipeline.
Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen beschrieben. In the following, the invention is described using embodiments.
Fig. 1 a) zeigt eine Schrägansicht eines beispielhaften erfindungsgemäßen Clamp-On-Ultraschall- Messgeräts mit einer beispielhaften erfindungsgemäßen Positioniervorrichtung. Fig. 1 a) shows an oblique view of an exemplary clamp-on ultrasonic measuring device according to the invention with an exemplary positioning device according to the invention.
Fig. 1 b) zeigt eine weitere Ausgestaltung eines beispielhaften erfindungsgemäßen Clamp-On- Ultraschall-Messgeräts. Fig. 1 b) shows a further embodiment of an exemplary clamp-on ultrasonic measuring device according to the invention.
Fig. 2 a) zeigt eine Schrägansicht einer beispielhaften erfindungsgemäßen Lagervorrichtung einer erfindungsgemäßen Positioniervorrichtung. Fig. 2 a) shows an oblique view of an exemplary bearing device according to the invention of a positioning device according to the invention.
Fig. 2 b) zeigt einen Schnitt durch die in Fig. 2 a) gezeigte Lagervorrichtung. Fig. 2 b) shows a section through the bearing device shown in Fig. 2 a).
Fig. 3 zeigt eine beispielhafte erfindungsgemäße Ultraschallwandlermontiervorrichtung. Fig. 3 shows an exemplary ultrasonic transducer mounting device according to the invention.
Figs. 4 a) und 4 b) skizzieren einen beispielhaften erfindungsgemäßen Werkzeug sch litten. Figs. 4 a) and 4 b) outline an exemplary tool carriage according to the invention.
Fig. 1 a) zeigt ein beispielhaftes erfindungsgemäßes Clamp-On-Ultraschall-Messgerät 1 mit einer beispielhaften erfindungsgemäßen Positioniervorrichtung 10. Clamp-On-Ultraschallwandler 20 sind an einer Außenfläche 52 einer medienführenden Rohrleitung 50 befestigt und dazu eingerichtet Ultraschallsignale in die Rohrleitung einzustrahlen und zu empfangen. Eine elektronische Mess- /Betriebsschaltung 30 ist dazu eingerichtet, die Ultraschallwandler 20 zu betreiben und Messsignale der Ultraschallwandler zwecks Erstellung von Messwerten zu einer Messgröße auszuwerten. Das Ultraschall-Messgerät kann dabei beispielsweise zur Messung eines Durchflusses oder einer Schallgeschwindigkeit beispielsweise mittels Laufzeit- oder Laufzeitdifferenzenmessung des in der Rohrleitung befindlichen Mediums eingerichtet sein. Die Positioniervorrichtung 10 weist wie hier beispielhaft gezeigt zwei Befestigungsschienen 11 auf, welche parallel zu einer Rohrleitungsachse 51 orientiert sind und eine Schienenebene definieren. Die Befestigungsschienen werden an ihren Enden jeweils durch eine Lagervorrichtung 12 gelagert, wobei zwischen der Außenfläche 52 und den Schienen jeweils ein Abstand eingerichtet ist. Auf diese Weise kann ein Eingriffsmittel (siehe Fig. 3) einer Ultraschallwandlermontiervorrichtung 23 in einen Eingriff 13 zwischen Rohrleitung und Befestigungsschiene 11 eingreifen, so dass der Ultraschallwandler 20 vor einer Fixierung entlang den Befestigungsschienen sicher und präzise ohne Verkippungsgefahr geführt werden kann. Eine Spannvorrichtung 14 umgreift mittels eines Spannelements 14.2 Rohrleitung und jeweils eine Lagervorrichtung 12 und bewirkt eine Anpresskraft auf die Lagervorrichtung. Das Spannelement kann beispielsweise mittels eines Bandschlosses oder ähnlichem zu einer Schlaufe bzw. zu einem geschlossenen Band zusammengefügt sein. In einer Ausgestaltung bewirkt die Spannvorrichtung jeweils eine Anpresskraft von mindestens 100 Newton, und insbesondere mindestens 800 Newton und bevorzugt mindestens 1000 Newton. Auf diese Weise können die Ultraschallwandler mittels der Ultraschallwandlermontiervorrichtung mit einer ausreichend hohen Anpresskraft gegen die Rohrleitung gepresst werden. Fig. 1 a) shows an exemplary clamp-on ultrasonic measuring device 1 according to the invention with an exemplary positioning device 10 according to the invention. Clamp-on ultrasonic transducers 20 are attached to an outer surface 52 of a media-carrying pipeline 50 and are designed to radiate and receive ultrasonic signals into the pipeline. An electronic measuring/operating circuit 30 is designed to operate the ultrasonic transducers 20 and to evaluate measurement signals from the ultrasonic transducers in order to create measured values for a measured variable. The ultrasonic measuring device can be designed, for example, to measure a flow rate or a speed of sound, for example by measuring the transit time or transit time difference of the medium in the pipeline. The positioning device 10 has, as shown here by way of example, two fastening rails 11 which are oriented parallel to a pipeline axis 51 and define a rail plane. The fastening rails are each supported at their ends by a bearing device 12, with a distance being set up between the outer surface 52 and the rails. In this way, an engagement means (see Fig. 3) of an ultrasonic transducer mounting device 23 can engage in an engagement 13 between the pipeline and the fastening rail 11, so that the ultrasonic transducer 20 can be guided safely and precisely without the risk of tilting before being fixed along the fastening rails. A clamping device 14 encompasses the pipeline and a bearing device 12 by means of a clamping element 14.2 and causes a contact force on the bearing device. The clamping element can, for example, be made into a loop or a closed band. In one embodiment, the clamping device brings about a contact force of at least 100 Newtons, and in particular at least 800 Newtons and preferably at least 1000 Newtons. In this way, the ultrasonic transducers can be pressed against the pipeline with a sufficiently high contact force by means of the ultrasonic transducer mounting device.
Die Befestigungsschienen 11 , welche über die Lagervorrichtungen fixiert sind, bieten ihrerseits einen Halt für die Ultraschallwandlermontiervorrichtung. The mounting rails 11, which are fixed via the bearing devices, in turn provide a support for the ultrasonic transducer mounting device.
Ein Ultraschallwandler 20 weist dabei einen Koppelkörper 22 und ein Wandlerelement 21 auf, welches Wandlerelement dazu eingerichtet ist, Ultraschallsignale zu erzeugen und zu erfassen. Der Koppelkörper ist dazu eingerichtet, die Ultraschallsignale zwischen Rohrleitung und Wandlerelement zu leiten und akustisch zu koppeln. An ultrasonic transducer 20 has a coupling body 22 and a transducer element 21, which transducer element is designed to generate and detect ultrasonic signals. The coupling body is designed to conduct the ultrasonic signals between the pipeline and the transducer element and to acoustically couple them.
Fig. 1 b) zeigt ein weiteres beispielhaftes erfindungsgemäßes Clamp-On-Ultraschall-Messgerät, bei welchem auf zwei Rohrleitungsseiten Ultraschallwandler angeordnet sind, wobei zwei Paar Befestigungsschienen 11 auf gegenüberliegenden Rohrleitungsseiten angeordnet sind und durch zwei Paar Lagervorrichtungen 12 gelagert werden. Jeweils eine Spannvorrichtung 14 ist dazu eingerichtet, zwei Lagervorrichtungen verschiedener Paare Lagervorrichtungen gegeneinander zu spannen. Fig. 1 b) shows another exemplary clamp-on ultrasonic measuring device according to the invention, in which ultrasonic transducers are arranged on two sides of the pipeline, with two pairs of fastening rails 11 being arranged on opposite sides of the pipeline and being supported by two pairs of bearing devices 12. One clamping device 14 is designed to clamp two bearing devices of different pairs of bearing devices against each other.
Die Anzahl der hier gezeigten Ultraschallwandler sowie ihre Anordnung sind rein beispielhaft. The number of ultrasonic transducers shown here and their arrangement are purely exemplary.
Erfindungswesentlich ist die Einrichtung einer erfindungsgemäßen Positioniervorrichtung zwecks sauberer und präziser Positionierung der Ultraschallwandler. Essential to the invention is the provision of a positioning device according to the invention for the purpose of clean and precise positioning of the ultrasonic transducers.
Fig. 2 a) und b) zeigen eine beispielhafte erfindungsgemäße Lagervorrichtung 12 zum Lagern von jeweils einem Ende zweier Befestigungsschienen 11 eines Paars Befestigungsschienen in einer Schrägansicht und in einem Schnitt. Die Lagervorrichtung weist beispielhaft zwei Paare Auflageflächen 12.1 auf, wobei Auflageflächen jedes Paars von Auflageflächen bei positionierter Lagervorrichtung in jeweils einer Querschnittsebene der Rohrleitung liegen. Auf diese Weise ist sichergestellt, dass die Befestigungsschienen parallel zu einer Rohrleitungsachse verlaufen. Die Lagervorrichtung kann wie hier beispielhaft gezeigt, eine Kompensationsvorrichtung 12.4 aufweisen, welche dazu eingerichtet ist, temperaturschwankungsbedingte Änderungen von Rohrleitungsabmessungen zumindest teilweise zu kompensieren. Dabei kann beispielsweise ein Federmechanismus unter Vorspannung das Spannelement auf einer Sollspannung halten. Die Lagervorrichtung kann wie hier beispielsweise gezeigt zur Lagerung des Spannelements ein rotatorisch bewegliches Element 12.2 aufweisen, so dass eine asymmetrische Spannungsverteilung im Spannelement vermieden werden kann. Kompensationsvorrichtung und Lagervorrichtung können unabhängig voneinander eingerichtet sein. Eine Rotationsachse des rotatorisch beweglichen Elements ist in montiertem Zustand dabei parallel zur Rohrleitungsachse. Fig. 2 a) and b) show an exemplary bearing device 12 according to the invention for supporting one end of two fastening rails 11 of a pair of fastening rails in an oblique view and in a section. The bearing device has, for example, two pairs of support surfaces 12.1, with support surfaces of each pair of support surfaces lying in a cross-sectional plane of the pipeline when the bearing device is in position. In this way, it is ensured that the fastening rails run parallel to a pipeline axis. The bearing device can, as shown here by way of example, have a compensation device 12.4, which is designed to at least partially compensate for changes in pipeline dimensions caused by temperature fluctuations. For example, a spring mechanism under pretension can hold the tensioning element at a target tension. The bearing device can, as shown here by way of example, have a rotationally movable element 12.2 for supporting the tensioning element, so that an asymmetrical tension distribution in the tensioning element can be avoided. The compensation device and bearing device can be set up independently of each other. A rotation axis of the rotating element is parallel to the pipeline axis when assembled.
Fig. 3 zeigt eine Schrägansicht auf eine beispielhafte erfindungsgemäße Ultraschallwandlermontiervorrichtung 23, welche dazu eingerichtet ist, einen Koppelkörper 22 des Clamp-On-Ultraschallwandlers mittels eines Befestigungsmittels 23.2 gegen die Rohrleitung zu pressen. Die Ultraschallwandlermontiervorrichtung 23 weist dabei Eingriffsmittel 23.1 auf, welche dazu eingerichtet sind, in den Eingriff 13 (siehe Fig. 1) zwischen Befestigungsschiene und Rohrleitung einzugreifen. Auf diese Weise ist der Clamp-On-Ultraschallwandler parallel zu den Befestigungsschienen verschiebbar, und senkrecht zur Schienenebene fest lagerbar. Fig. 3 shows an oblique view of an exemplary ultrasonic transducer mounting device 23 according to the invention, which is designed to press a coupling body 22 of the clamp-on ultrasonic transducer against the pipeline by means of a fastening means 23.2. The ultrasonic transducer mounting device 23 has engagement means 23.1, which are designed to engage in the engagement 13 (see Fig. 1) between the fastening rail and the pipeline. In this way, the clamp-on ultrasonic transducer can be moved parallel to the fastening rails and can be mounted firmly perpendicular to the rail plane.
Wie hier gezeigt können die Eingriffsmittel 23.1 jeweils eine Einbuchtung 23.11 aufweisen, welche dazu eingerichtet sind, die jeweilige Befestigungsschiene 11 aufzunehmen und entlang eines Umfangs der Befestigungsschiene abschnittsweise zu umgreifen, wobei die Einbuchtungen räumlich gleichgerichtet orientiert sind. So lässt sich die Ultraschallwandlermontiervorrichtung einfach und sicher einrichten. As shown here, the engagement means 23.1 can each have a recess 23.11, which is designed to receive the respective fastening rail 11 and to encompass it in sections along a circumference of the fastening rail, wherein the recesses are spatially oriented in the same direction. In this way, the ultrasonic transducer mounting device can be set up easily and safely.
Fig. 4 a) skizziert einen beispielhaften erfindungsgemäßen Werkzeugschlitten 40 für ein Werkzeug 60 (siehe Fig. 4 b)) zum Bearbeiten einer Außenwand 51 einer Rohrleitung 50, wobei der Werkzeugschlitten 40 dazu eingerichtet ist, an einem Paar Befestigungsschienen 11 einer Positioniervorrichtung 10 gemäß einem der vorigen Ansprüche gelagert zu werden. Wie hier gezeigt kann der Werkzeugschlitten drei Positionierlager 41 aufweisen, die insbesondere Roll- oder Gleitlager ausgeführt sind. Jeder Befestigungsschiene 11 ist zumindest eines der Positionierlager zugeordnet, so dass die Positionierlager eine erste Lagerebene definieren. Der Werkzeugschlitten weist eine Werkzeugmontiervorrichtung 42 zur Montage des Werkzeugs auf. Auf diese Weise kann das Werkzeug parallel zu den Schienen präzise bewegt werden. Das Werkzeug kann auch eine Höhenverstellung aufweisen, um eine Bearbeitungszustellung einzustellen. Fig. 4 a) outlines an exemplary tool carriage 40 according to the invention for a tool 60 (see Fig. 4 b)) for machining an outer wall 51 of a pipeline 50, wherein the tool carriage 40 is designed to be mounted on a pair of fastening rails 11 of a positioning device 10 according to one of the preceding claims. As shown here, the tool carriage can have three positioning bearings 41, which are designed in particular as roller or plain bearings. At least one of the positioning bearings is assigned to each fastening rail 11, so that the positioning bearings define a first bearing plane. The tool carriage has a tool mounting device 42 for mounting the tool. In this way, the tool can be moved precisely parallel to the rails. The tool can also have a height adjustment in order to set a machining feed.
In einer Ausgestaltung kann der Werkzeugschlitten wie hier gezeigt zumindest ein Sicherheitslager 43, insbesondere Roll- oder Gleitlager aufweisen, welches in einer zweiten Lagerebene senkrecht zur ersten Lagerebene und parallel zu den Befestigungsschienen angeordnet ist und einen Abstand zur ersten Lagerebene aufweist, so dass das zumindest eine Sicherheitslager auf einer der Befestigungsschienen positionierbar ist. In one embodiment, the tool carriage can have at least one safety bearing 43, in particular a roller or plain bearing, as shown here, which is arranged in a second bearing plane perpendicular to the first bearing plane and parallel to the fastening rails and is at a distance from the first bearing plane, so that the at least one safety bearing can be positioned on one of the fastening rails.
Fig. 4 b) skizziert beispielhaft, in welche Richtung ein Werkzeug 60 montiert bzw. demontiert wird. Bezugszeichenliste Fig. 4 b) shows an example of the direction in which a tool 60 is mounted or dismounted. List of reference symbols
Clamp-On-Ultraschall-DurchflussmessgerätClamp-on ultrasonic flow meter
PositioniervorrichtungPositioning device
Befestigungsschiene Mounting rail
Lagervorrichtung Storage device
Auflagefläche rotatorisch bewegliches ElementSupport surface rotatory movable element
Rotationsachse Rotation axis
EingriffsvorrichtungIntervention device
Kompensationsvorrichtung Compensation device
Eingriff Intervention
Spannvorrichtung Clamping device
Spannelement Clamping element
Band Tape
Clamp-On-UltraschallwandlerClamp-on ultrasonic transducer
Wandlerelement Transducer element
KoppelkörperCoupling body
UltraschallwandlermontiervorrichtungUltrasonic transducer mounting device
Eingriffsmittel Intervention means
Einbuchtung indentation
Befestigungsmittel Fasteners
Elektronische Mess-/BetriebsschaltungElectronic measuring/operating circuit
Werkzeugschlitten Tool carriage
Positionierlager Werkzeugmontiervorrichtung Sicherheitslager Rohrleitung Rohrleitungsachse Außenfläche Werkzeug Positioning bearing Tool mounting device Safety bearing Pipeline Pipeline axis Outer surface Tool

Claims

Patentansprüche Patent claims
1. Positioniervorrichtung (10) eines Clamp-On-Ultraschall-Messgeräts (1) zur Positionierung mindestens eines Ultraschallwandlers (20) oder eines Werkzeugs (60) an einer medienführenden Rohrleitung (50) mit einer Rohrleitungsachse (51), umfassend: zumindest ein Paar Befestigungsschienen (11) eingerichtet zum Positionieren und Befestigen zumindest eines Ultraschallwandlers des mindestens einen Ultraschallwandlers oder eines Werkzeugs zum Bearbeiten einer Außenfläche (52) der Rohrleitung, wobei ein Paar Befestigungsschienen jeweils eine Schienenebene definieren; zumindest ein Paar Lagervorrichtungen (12) eingerichtet zum Lagern jeweils eines Paars von Befestigungsschienen (11), wobei die Befestigungsschienen einen Mindestabstand (11.2) zur Außenfläche der Rohrleitung aufweisen, wobei der Mindestabstand dazu eingerichtet ist, einen Eingriff (13) zwischen Befestigungsschiene und Rohrleitung zu bieten, wobei die Lagervorrichtungen in Richtung der Befestigungsschienen fluchtende Auflageflächen aufweisen; für jede Lagervorrichtung eines Paars von Lagervorrichtungen jeweils eine Spannvorrichtung (14), welche dazu eingerichtet ist, mindestens eine der Lagervorrichtungen des zumindest einen Paars von Lagervorrichtungen gegen die Außenfläche der Rohrleitung zu pressen; wobei jede Lagervorrichtung zumindest ein Paar Auflageflächen (12.1) aufweist, wobei Auflageflächen jedes Paars von Auflageflächen bei positionierter Lagervorrichtung in jeweils einer Querschnittsebene der Rohrleitung liegen. 1. Positioning device (10) of a clamp-on ultrasonic measuring device (1) for positioning at least one ultrasonic transducer (20) or a tool (60) on a media-carrying pipeline (50) with a pipeline axis (51), comprising: at least one pair of fastening rails (11) set up for positioning and fastening at least one ultrasonic transducer of the at least one ultrasonic transducer or a tool for machining an outer surface (52) of the pipeline, wherein a pair of fastening rails each define a rail plane; at least one pair of bearing devices (12) set up for supporting a pair of fastening rails (11) each, wherein the fastening rails have a minimum distance (11.2) from the outer surface of the pipeline, wherein the minimum distance is set up to provide an engagement (13) between the fastening rail and the pipeline, wherein the bearing devices have support surfaces aligned in the direction of the fastening rails; for each bearing device of a pair of bearing devices, a clamping device (14) which is designed to press at least one of the bearing devices of the at least one pair of bearing devices against the outer surface of the pipeline; wherein each bearing device has at least one pair of support surfaces (12.1), wherein support surfaces of each pair of support surfaces lie in a cross-sectional plane of the pipeline when the bearing device is positioned.
2. Positioniervorrichtung nach Anspruch 1 , wobei die Spannvorrichtung (14) dazu eingerichtet ist, pro Ultraschallwandler eine Anpresskraft von jeweils mindestens 500 Newton, und insbesondere mindestens 800 Newton und bevorzugt mindestens 1000 Newton zu erzeugen. 2. Positioning device according to claim 1, wherein the clamping device (14) is designed to generate a contact force of at least 500 Newtons, and in particular at least 800 Newtons and preferably at least 1000 Newtons, per ultrasonic transducer.
3. Positioniervorrichtung nach Anspruch 1 oder 2, wobei die Lagervorrichtung (12) eine Kompensationsvorrichtung (12.4) aufweist, welche dazu eingerichtet ist, temperaturschwankungsbedingte Änderungen von Rohrleitungsabmessungen zumindest teilweise zu kompensieren. 3. Positioning device according to claim 1 or 2, wherein the bearing device (12) has a compensation device (12.4) which is designed to at least partially compensate for changes in pipeline dimensions caused by temperature fluctuations.
4. Positioniervorrichtung nach einem der vorigen Ansprüche, wobei die Spannvorrichtung (14) jeweils zumindest ein Spannelement (14.1) wie beispielsweise ein Band, eine Kette oder ein Gurt aufweist, welches mindestens eine Spannelement dazu eingerichtet ist, eine Anpresskraft gegen die Lagervorrichtung zu bewirken. 4. Positioning device according to one of the preceding claims, wherein the tensioning device (14) in each case has at least one tensioning element (14.1) such as a band, a chain or a belt, which at least one tensioning element is adapted to cause a contact force against the bearing device.
5. Positioniervorrichtung nach Anspruch 4, wobei das Spannelement (14.1) dazu eingerichtet ist, die Rohrleitung (50) sowie die Lagervorrichtung zu umgreifen und zu werden und zumindest eine der Lagervorrichtungen gegen die Außenfläche (52) der Rohrleitung zu pressen. 5. Positioning device according to claim 4, wherein the clamping element (14.1) is adapted to encompass the pipeline (50) and the bearing device and to press at least one of the bearing devices against the outer surface (52) of the pipeline.
6. Positioniervorrichtung nach einem der Ansprüche 1 bis 4, wobei die Positioniervorrichtung (10) zwei Paar Befestigungsschienen aufweist, welche auf gegenüberliegenden Seiten der Rohrleitung angeordnet sind, wobei die Positioniervorrichtung zwei Paar Lagervorrichtungen (12) aufweist, wobei jeweils ein Paar Lagervorrichtungen dazu eingerichtet ist, jeweils ein Paar Befestigungsschienen (11) zu lagern, wobei jeweils eine Spannvorrichtung (14) dazu eingerichtet ist, zwei Lagervorrichtungen verschiedener Paare Lagervorrichtungen gegeneinander zu spannen. 6. Positioning device according to one of claims 1 to 4, wherein the positioning device (10) has two pairs of fastening rails which are arranged on opposite sides of the pipeline, wherein the positioning device has two pairs of bearing devices (12), wherein in each case a pair of bearing devices is adapted to support a pair of fastening rails (11), wherein in each case a clamping device (14) is adapted to clamp two bearing devices of different pairs of bearing devices against one another.
7. Positioniervorrichtung nach einem der vorigen Ansprüche 4 bis 6, wobei jede Lagervorrichtung (12) zumindest ein rotatorisch bewegliches Element (12.2) aufweist, wobei eine Rotationsachse (12.21) jedes rotatorischen Elements bei positionierter Lagervorrichtung parallel zur Rohrleitungsachse (51) verläuft, wobei das Spannelement (14.2) auf dem mindestens einen rotatorisch beweglichen Element gelagert ist. 7. Positioning device according to one of the preceding claims 4 to 6, wherein each bearing device (12) has at least one rotationally movable element (12.2), wherein a rotation axis (12.21) of each rotary element runs parallel to the pipeline axis (51) when the bearing device is positioned, wherein the clamping element (14.2) is mounted on the at least one rotationally movable element.
8. Positioniervorrichtung nach einem der vorigen Ansprüche, wobei die Befestigungsschienen (11) sowie die Lagervorrichtungen (12) jeweils aus einem Metall wie beispielsweise Stahl oder insbesondere einem rostfreien Stahl hergestellt sind. 8. Positioning device according to one of the preceding claims, wherein the fastening rails (11) and the bearing devices (12) are each made of a metal such as steel or in particular a stainless steel.
9. Werkzeugschlitten (40) für ein Werkzeug (60) zum Bearbeiten einer Außenwand (51) einer Rohrleitung (50), wobei der Werkzeugschlitten (40) dazu eingerichtet ist, an einem Paar Befestigungsschienen (11) einer Positioniervorrichtung (10) gemäß einem der vorigen Ansprüche gelagert zu werden, wobei der Werkzeugschlitten zumindest drei Positionierlager (41), insbesondere Roll- oder Gleitlager aufweist, wobei jeder Befestigungsschiene (11) zumindest eines der Positionierlager zugeordnet ist, und wobei die Positionierlager eine erste Lagerebene definieren, wobei der Werkzeugschlitten eine Werkzeugmontiervorrichtung (42) zur Montage des Werkzeugs aufweist. 9. Tool carriage (40) for a tool (60) for machining an outer wall (51) of a pipeline (50), wherein the tool carriage (40) is designed to be mounted on a pair of fastening rails (11) of a positioning device (10) according to one of the preceding claims, wherein the tool carriage has at least three positioning bearings (41), in particular roller or plain bearings, wherein each fastening rail (11) is assigned at least one of the positioning bearings, and wherein the positioning bearings define a first bearing plane, wherein the tool carriage has a tool mounting device (42) for mounting the tool.
10. Werkzeugschlitten nach Anspruch 9, wobei der Werkzeugschlitten zumindest ein Sicherheitslager (43), insbesondere Roll- oder Gleitlager aufweist, welches in einer zweiten Lagerebene senkrecht zur ersten Lagerebene (41.1) und parallel zu den Befestigungsschienen (11) angeordnet ist und einen Abstand zur ersten Lagerebene aufweist, wobei das zumindest eine Sicherheitslager auf einer der Befestigungsschienen positionierbar ist.10. Tool carriage according to claim 9, wherein the tool carriage has at least one safety bearing (43), in particular a roller or plain bearing, which is arranged in a second bearing plane perpendicular to the first bearing plane (41.1) and parallel to the fastening rails (11) and has a distance from the first bearing plane, wherein the at least one safety bearing can be positioned on one of the fastening rails.
11. Clamp-On-Ultraschallwandler (20) eingerichtet für eine Positioniervorrichtung (10) nach einem der Ansprüche 1 bis 8, umfassend: ein Wandlerelement (21) zum Erzeugen und Erfassen von Ultraschallsignalen; einen Koppelkörper (22) zum Übertragen von der Ultraschallsignale zwischen Rohrleitung (50) und Wandlerelement; eine Ultraschallwandlermontiervorrichtung (23) zur Montage an der Positioniervorrichtung; 11. Clamp-on ultrasonic transducer (20) configured for a positioning device (10) according to one of claims 1 to 8, comprising: a transducer element (21) for generating and detecting ultrasonic signals; a coupling body (22) for transmitting the ultrasonic signals between the pipeline (50) and the transducer element; an ultrasonic transducer mounting device (23) for mounting on the positioning device;
12. Clamp-On-Ultraschallwandler nach Anspruch 11 , wobei die Ultraschallwandlermontiervorrichtung (23) ein Eingriffsmittel (23.1) für jede Befestigungsschiene (11) aufweist, mittels welchen Eingriffsmitteln der Clamp-On-Ultraschallwandler (20) parallel zu den Befestigungsschienen verschiebbar ist, und senkrecht zur Schienenebene fest lagerbar ist. 12. Clamp-on ultrasonic transducer according to claim 11, wherein the ultrasonic transducer mounting device (23) has an engagement means (23.1) for each fastening rail (11), by means of which engagement means the clamp-on ultrasonic transducer (20) can be displaced parallel to the fastening rails and can be fixedly mounted perpendicular to the rail plane.
13. Clamp-On-Ultraschallwandler nach Anspruch 12, wobei die Eingriffsmittel (23.1) jeweils eine Einbuchtung (23.11) aufweisen, welche dazu eingerichtet sind, die jeweilige Befestigungsschiene (11) aufzunehmen und entlang eines Umfangs der Befestigungsschiene abschnittsweise zu umgreifen, wobei die Einbuchtungen räumlich gleichgerichtet orientiert sind. 13. Clamp-on ultrasonic transducer according to claim 12, wherein the engagement means (23.1) each have a recess (23.11) which are adapted to receive the respective fastening rail (11) and to encompass it in sections along a circumference of the fastening rail, wherein the recesses are spatially oriented in the same direction.
14. Clamp-On-Ultraschall-Messgerät (1) umfassend: eine Positioniervorrichtung (10) nach einem der vorigen Ansprüche; zumindest einen Ultraschallwandler (20) nach einem der Ansprüche 11 bis 13, insbesondere mindestens ein Paar Ultraschallwandler (20), wobei jeder Ultraschallwandler eine Ultraschallwandlermontiervorrichtung zur Montage an der Positioniervorrichtung aufweist; eine elektronische Mess-/Betriebsschaltung (30) zum Betreiben des zumindest einen Ultraschallwandlers, zum Auswerten von Messsignalen des zumindest einen Ultraschallwandlers und zu Bereitstellen von Messwerten mindestens einer Messgröße wie beispielsweise Durchfluss oder Schallgeschwindigkeit eines durch eine Rohrleitung strömenden Mediums. 14. Clamp-on ultrasonic measuring device (1) comprising: a positioning device (10) according to one of the preceding claims; at least one ultrasonic transducer (20) according to one of claims 11 to 13, in particular at least one pair of ultrasonic transducers (20), each ultrasonic transducer having an ultrasonic transducer mounting device for mounting on the positioning device; an electronic measuring/operating circuit (30) for operating the at least one ultrasonic transducer, for evaluating measurement signals from the at least one ultrasonic transducer and for providing measured values of at least one measured variable such as flow rate or speed of sound of a medium flowing through a pipeline.
PCT/EP2023/079804 2022-11-18 2023-10-25 Positioning device of a clamp-on ultrasonic measuring apparatus, clamp-on ultrasonic transducer, clamp-on ultrasonic measuring device, and tool carriage WO2024104751A1 (en)

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Publication number Priority date Publication date Assignee Title
US4286470A (en) * 1979-10-19 1981-09-01 Lfe Corporation Clamp-on ultrasonic transducer
JPS57207860A (en) * 1981-06-16 1982-12-20 Toshiba Corp Ultrasonic test equipment of piping
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DE102007023802A1 (en) * 2007-05-21 2008-11-27 Endress + Hauser Flowtec Ag Clamp on flow meter for fixing in pipe line, has multiple modular shaped components, which are combined in different arrangements and two different types of clamp on flow meters are realized
JP2013174567A (en) * 2012-02-27 2013-09-05 Atsuden:Kk Ultrasonic transceiver and clamp-on type ultrasonic flowmeter using ultrasonic transceiver
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EP3441726A1 (en) * 2017-08-07 2019-02-13 Flexim Flexible Industriemesstechnik Gmbh Method for detachably fastening clamp-on ultrasound flow rate sensors and apparatus for same and a clamping unit

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