WO2016202602A1 - Appareil de mesure de débit à induction magnétique - Google Patents

Appareil de mesure de débit à induction magnétique Download PDF

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Publication number
WO2016202602A1
WO2016202602A1 PCT/EP2016/062537 EP2016062537W WO2016202602A1 WO 2016202602 A1 WO2016202602 A1 WO 2016202602A1 EP 2016062537 W EP2016062537 W EP 2016062537W WO 2016202602 A1 WO2016202602 A1 WO 2016202602A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
measuring tube
inductive flowmeter
flowmeter according
field
Prior art date
Application number
PCT/EP2016/062537
Other languages
German (de)
English (en)
Inventor
Frank Voigt
Günther Bähr
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 WO2016202602A1 publication Critical patent/WO2016202602A1/fr

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Classifications

    • 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
    • G01F1/56—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 using electric or magnetic effects
    • G01F1/58—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 using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/586—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 using electric or magnetic effects by electromagnetic flowmeters constructions of coils, magnetic circuits, accessories therefor

Definitions

  • the present invention relates to a magnetic-inductive flow measuring device according to the preamble of claim 1.
  • Flow meter are well known. These flowmeters mostly magnet coils are used to generate a magnetic field. In such a solenoid coil metal wire is often wound on a bobbin made of plastic. This is then attached to a spool core.
  • the spool core can be formed from a plurality of interconnected sheets.
  • DE 10 2010 001 393 A1 discloses a generic magneto-inductive flowmeter with a coil core formed from field plates and a coil body mounted thereon.
  • the spool core points in one
  • This flowmeter is a plug-in system which can be mounted perpendicular to the measuring tube axis on the measuring tube of the flowmeter.
  • the present invention solves this problem by a magnetic-inductive flowmeter with the features of claim 1.
  • a magnetic-inductive flow meter comprises a measuring tube and a magnet system which is arranged on the measuring tube.
  • the magnet system has two magnetic coils for field generation, which are arranged on opposite sides of the measuring tube. In addition to the magnetic coils, the magnet system has a so-called
  • Field guiding system which combines the function of the coil core, the pole piece and the field feedback in one component.
  • the field is on the one hand by the Reinforced coil core, on the other hand designed by the pole piece in the fluid advantageously in the spatial distribution and finally by the
  • the field guidance system is provided in one piece or in one piece. This one-piece refers to the structural design of this component in a sectional plane perpendicular to the longitudinal axis of the measuring tube. In a sectional plane in the
  • the field guidance system has a plurality of interconnected sheets. These sheets are preferably electrically isolated from each other. A bobbin can advantageously be omitted if the function of fixing the magnetic coils is taken over by the field guidance system. In addition, however, electrical insulation, e.g. an insulating layer of plastic, to be provided between the magnetic coil and the field guide system.
  • the field-guiding system itself has corresponding segments or sections which are integrally formed, so that the field-guiding system assumes the function of the pole piece, the magnet coil core and the field feedback ,
  • the pole shoe segment serves for the optimal distribution of the magnetic field and is adapted to the shape of the measuring tube, that is to say predominantly circular.
  • Spool core segment is passed through the solenoid and improves the
  • the outer segment serves to return the magnetic flux.
  • the field guidance system consists of a plurality of interconnected sheets.
  • the construction of the field guidance system makes it possible to dispense with individual parts.
  • the magnet system can also be easily attached by attaching from the axial direction forth on the measuring tube.
  • the sheets are advantageously connected to each other by stamping packages. As a result, mass production can be realized.
  • the sheets are preferably designed in the same shape in the field of magnetic coils.
  • the magnetic coils are designed as saddle coils.
  • the magnet system can advantageously be attached to the measuring tube and fixed, so that a quick installation can be realized. In a particularly preferred embodiment, this can be done in such a way that the fixing is effected by adhesion between the magnet system and housing parts without further fixing means.
  • the measuring tube is formed at least in two parts with two measuring tube segments and that the two measuring tube segments are connected to each other by positive locking and / or material closure.
  • the assembly effort is reduced when the magnet system is surrounded by a housing, which is constructed substantially in two parts with a housing pot and a housing cover.
  • Measuring tube segment can be formed as a first one-piece component.
  • the housing cover and a second measuring tube segment may also be formed as a second one-piece component.
  • the field guidance system may consist exclusively of electrically magnetized metal sheets which are insulated against one another.
  • FIG. 1 shows a partially sectioned side view of an embodiment of a magnetic-inductive flow measuring device 1 according to the invention
  • FIG. 2 shows the aforementioned magnetic-inductive flow measuring device 1 in a sectional view perpendicular to the measuring tube axis L.
  • the measuring tube axis L subsequently serves as an orientation aid for specifying the longitudinal direction, which is along the
  • the illustrated flow meter is characterized by its compact design and its cost-effective mass production suitable production.
  • This housing 2 is constructed in several parts and comprises in the embodiment of FIGS. 1 and 2 a housing pot 6 and a
  • the housing pot 6 has a measuring tube segment 19 and an outer wall segment 20 limiting the flow meter to the outside.
  • the measuring tube segment 19 is cylindrical in FIG. 1, but it can also assume any other known tubular shape. For example, it is conceivable to produce a measuring tube segment with a reduced cross section in the region of the measuring electrodes for realizing a smaller one
  • the measuring tube segment 19 serves to support a medium-contacting liner 4, ie a plastic lining, along the inner wall of the measuring tube segment 19.
  • medium-contacting means that the liner 4 is in contact with the measuring medium on a side facing away from the measuring tube.
  • the housing pot 6 also has on one side already a connection flange 3. The housing pot 6, for example, by a casting process or by a
  • outside wall segment 20 and the measuring tube segment 19 individually and by a welding method, e.g. Laser welding, to connect with each other or to press the two parts together to realize in this way the illustrated housing pot 6.
  • a welding method e.g. Laser welding
  • the housing cover 5 also has a connection flange 3 and a
  • the measuring tube 1 1 is formed. This can e.g. via a fit.
  • Welding process such as laser welding, for connecting the housing pot 6 and housing cover 5 are applied.
  • a housing space closed to the outside is created, in which the components of the magnetic-inductive flowmeter are arranged.
  • a measuring tube is provided which extends between the two connecting flanges 3.
  • the measuring tube segment 19 of the housing pot 6 can also serve as a guide element in the manufacture of the magnetic-inductive measuring device, on which a magnet system can be plugged.
  • This magnet system comprises two magnet coils 7, a field feedback 17, one magnet yoke each adapted to the lateral surface of the Meßrohrsegments pole piece 15 and a coil core 14, which are formed in segments of a stanzlast conducting field guidance system 8.
  • the field feedback, the coil core and the pole piece together with the coil commonly referred to as a field system.
  • the field guide system is composed of a plurality of metal sheets 16, wherein the stacking direction of the stanzmpying metal sheets runs parallel to the measuring tube axis L.
  • the field is generated primarily by the magnetic coils 7.
  • These magnetic coils 7 are formed in the embodiment of FIGS. 1 and 2 as so-called saddle coils.
  • the laminated core has a pole piece segment 15, a
  • Field feedback segment 17 is preferably formed as a hollow cylinder but which has recesses, e.g. Cable penetrations in the range of measuring electrodes 13, may have. Starting from this hollow cylindrical shape extend radially to the measuring tube axis L out two on the side facing the measuring tube circular arc-shaped projections whose circular chord increases towards the measuring tube axis L out. The width of the
  • circular arc projection preferably increases by at least 5%, more preferably by at least 10%. This projection forms the magnetic core segment and the pole shoe segment, which merge into one another.
  • Laminated packages realized. It only needs the magnetic coil 7 are completed to complete the magnet system. This can then be plugged onto the measuring tube segment in a simple manufacturing step.
  • the aforementioned laminated core can be realized by punching the individual metal sheets 16 and by packaging these sheets. This can be done particularly effective and automated by punching packetization.
  • Stamped packetizing is known per se as a production method and is described, for example, in the book "Chipless Production: Stamping, by W.Hellwig et al. , Friedrich Vieweg & son
  • Packaging variant can also be applied in the present case preferred.
  • a magnet system can thus be made particularly time-saving and automated.
  • the stanzmpiere magnet system can then be easily attached to a measuring tube.
  • a display and evaluation unit 9 is also integrated, which has a display 10.
  • the housing 2 also has a power and / or signal cable connection 12, via which cables for power supply and / or signal exchange can be connected.
  • Measuring tube segment of the housing cover Measuring tube segment of the housing pot Outer wall segment Ssrohrachse

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Appareil de mesure de débit à induction magnétique comportant un tube de mesure et un système magnétique disposé sur le tube de mesure, présentant deux bobines d'électro-aimant maintenues par un système de guidage de champ et disposées au niveau de côtés opposés sur le tube de mesure. L'appareil est caractérisé en ce que le système de guidage de champ est formé d'un seul tenant à partir de plusieurs segments dans un plan perpendiculaire à l'axe du tube de mesure, les segments étant conçus comme épanouissement polaire, noyau de bobine d'électro-aimant et rétroaction de champ, et le système de guidage de champ étant composé d'une pluralité de tôles reliées les unes aux autres.
PCT/EP2016/062537 2015-06-18 2016-06-02 Appareil de mesure de débit à induction magnétique WO2016202602A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015109747.8 2015-06-18
DE102015109747.8A DE102015109747A1 (de) 2015-06-18 2015-06-18 Magnetisch-induktives Durchflussmessgerät

Publications (1)

Publication Number Publication Date
WO2016202602A1 true WO2016202602A1 (fr) 2016-12-22

Family

ID=56097128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/062537 WO2016202602A1 (fr) 2015-06-18 2016-06-02 Appareil de mesure de débit à induction magnétique

Country Status (2)

Country Link
DE (1) DE102015109747A1 (fr)
WO (1) WO2016202602A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3640604A1 (fr) 2018-10-18 2020-04-22 Krohne AG Appareil de mesure de débit à induction magnétique, dispositif de circuit magnétique et procédé de fabrication d'un dispositif de circuit magnétique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696737A (en) * 1949-12-14 1954-12-14 Erdco Eng Corp Magnetic type flowmeter
US2844568A (en) * 1955-10-10 1958-07-22 Phillips Petroleum Co Indicating and/or control system and method
US4635486A (en) * 1984-06-06 1987-01-13 Danfoss A/S Electromagnetic flow meter
DE19535998A1 (de) * 1995-09-27 1997-04-03 Ketelsen Broder Induktiver Durchflußmesser
DE102008035739A1 (de) * 2008-07-31 2010-02-04 Abb Technology Ag Magnetisch induktiver Durchflussmesser mit einer gleichartige magnetische Flussleitmittel umfassenden Elektromagneteinheit
DE102010001393A1 (de) 2010-01-29 2011-08-04 Endress + Hauser Flowtec Ag Magnetisch-induktives Durchflussmessgerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2009513A1 (de) * 1970-02-28 1971-09-09 Fischer & Porter Gmbh Induktive Durchflußmeßeinnchtung mit eisenhaltigem Ruckschluß
JPS5871416A (ja) * 1981-10-23 1983-04-28 Hitachi Ltd 電磁流量計検出器
DE4114137A1 (de) * 1991-04-30 1992-11-05 Bopp & Reuther Ag Durchflussmessgeraet
DE19845346C2 (de) * 1998-10-02 2001-10-18 Abb Patent Gmbh Durchflussmeßaufnehmer, insbesondere induktiver Durchflussmeßaufnehmer
DE102007004828B4 (de) * 2007-01-31 2013-02-07 Ifm Electronic Gmbh Kompaktes, modular aufgebautes magnetisch induktives Durchflussmessgerät und Verfahren zur Herstellung eines solchen Durchflussmessgerätes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696737A (en) * 1949-12-14 1954-12-14 Erdco Eng Corp Magnetic type flowmeter
US2844568A (en) * 1955-10-10 1958-07-22 Phillips Petroleum Co Indicating and/or control system and method
US4635486A (en) * 1984-06-06 1987-01-13 Danfoss A/S Electromagnetic flow meter
DE19535998A1 (de) * 1995-09-27 1997-04-03 Ketelsen Broder Induktiver Durchflußmesser
DE102008035739A1 (de) * 2008-07-31 2010-02-04 Abb Technology Ag Magnetisch induktiver Durchflussmesser mit einer gleichartige magnetische Flussleitmittel umfassenden Elektromagneteinheit
DE102010001393A1 (de) 2010-01-29 2011-08-04 Endress + Hauser Flowtec Ag Magnetisch-induktives Durchflussmessgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
W.HELLWIG ET AL.: "Spanlose Fertigung: Stanzen", 1996, FRIEDRICH VIEWEG & SOHN VERLAGSGESELLSCHAFT MBH BRAUNSCHWEIG

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3640604A1 (fr) 2018-10-18 2020-04-22 Krohne AG Appareil de mesure de débit à induction magnétique, dispositif de circuit magnétique et procédé de fabrication d'un dispositif de circuit magnétique

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