DE4138840A1 - Mounting for flow tube in mass flowmeter - has three and a half windings securely held by shaped part parallel to coil axis by casting or pressing - Google Patents

Mounting for flow tube in mass flowmeter - has three and a half windings securely held by shaped part parallel to coil axis by casting or pressing

Info

Publication number
DE4138840A1
DE4138840A1 DE19914138840 DE4138840A DE4138840A1 DE 4138840 A1 DE4138840 A1 DE 4138840A1 DE 19914138840 DE19914138840 DE 19914138840 DE 4138840 A DE4138840 A DE 4138840A DE 4138840 A1 DE4138840 A1 DE 4138840A1
Authority
DE
Germany
Prior art keywords
shaped part
windings
mounting
axis
casting
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE19914138840
Other languages
German (de)
Other versions
DE4138840C2 (en
Inventor
Dieter Meier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Patent GmbH
Original Assignee
Fischer and Porter GmbH
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 Fischer and Porter GmbH filed Critical Fischer and Porter GmbH
Priority to DE19914138840 priority Critical patent/DE4138840C2/en
Publication of DE4138840A1 publication Critical patent/DE4138840A1/en
Application granted granted Critical
Publication of DE4138840C2 publication Critical patent/DE4138840C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/8413—Coriolis or gyroscopic mass flowmeters constructional details means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
    • G01F1/8468—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits
    • G01F1/8481—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having loop-shaped measuring conduits, e.g. the measuring conduits form a loop with a crossing point
    • G01F1/8486—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having loop-shaped measuring conduits, e.g. the measuring conduits form a loop with a crossing point with multiple measuring conduits

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The mounting has three and a half windings at a distance apart on a common axis. The windings are connected together at three points in approximately the same angular sector by a shaped part (14) parallel to the axis (4). The angle sectors of the inner windings (8,10) opposite the shaped part are set into opposite vibration. The connected angle sectors are cast or pressed into the material of the shaped part, which can be metallic or non-metallic. ADVANTAGE - Shaped part for holding windings can be made at low cost and holds windings accurately and reliably.

Description

Die Erfindung betrifft eine Halterung für ein zu durch­ strömendes Rohr in einem Massedurchflußmesser mit dreieinhalb eine gemeinsame Achse und Abstände untereinander aufweisen­ den Windungen, die an drei Stellen in wenigstens annähernd gleichgerichteten Winkelsektoren mit einem parallel zu der Achse verlaufenden Formstück miteinander verbunden sind, bei dem die dem Formstück gegenüberliegenden Winkelsektoren der inneren Windungen parallel zu der Achse in gegensinnige Schwingungen zu versetzen sind.The invention relates to a holder for a through flowing tube in a three and a half mass flow meter have a common axis and distances between them the turns in three places in at least approximately rectified angular sectors with a parallel to the axis extending fitting are connected to each other, in which the angular sectors opposite the fitting the inner turns parallel to the axis in opposite directions Vibrations are to be set.

Bei einer solchen Halterung hat das Formstück u. a. die Auf­ gabe, die inneren Windungen des Rohrs definiert in gegensinni­ ge Schwingungen parallel zu der Achse und dadurch auch in gegensinnige Torsionsschwingungen um einander parallele Achsen versetzen zu können, wie dies aus der EP-04 21 812 A1 bekannt ist. Deswegen müssen die Windungen in den genann­ ten Winkelsektoren genau festgelegt werden. Für diese Festlegung wurden bisher mechanisch bearbeitete Formstücke oder gegossene Formstücke verwendet. Eine solche mechani­ sche Bearbeitung ist sehr aufwendig; auch gegossene Form­ stücke müssen noch mechanisch nachbearbeitet werden, um die notwendig sehr genaue Festlegung der Windungen zu er­ halten. Im allgemeinen handelt es sich darum, die Formstücke genau der Geometrie der Windungen und dem gewünschten Ab­ stand zwischen den Windungen anzupassen.With such a holder, the fitting u. a. the on gift, the inner turns of the tube defined in opposite directions vibrations parallel to the axis and therefore also in opposite torsional vibrations around parallel To be able to move axes, as is known from EP-04 21 812 A1 is known. That is why the turns must be called th angle sectors can be precisely defined. For this So far, mechanically processed fittings have been specified or molded fittings used. Such a mechani processing is very complex; also cast form pieces still have to be mechanically reworked to the necessary very precise definition of the turns hold. In general, it is the fittings exactly the geometry of the turns and the desired Ab stood between the turns to adjust.

Aufgabe der Erfindung ist es, ein Formstück zur Festlegung der Windungen anzugeben, das mit geringem Aufwand herstell­ bar ist und die Windungen mit großer Zuverlässigkeit dauer­ haft genau festlegt.The object of the invention is to determine a fitting of the turns to be produced with little effort bar and the turns last with great reliability detects precisely.

Zur Lösung dieser Aufgabe ist die Halterung dadurch gekenn­ zeichnet, daß die erstgenannten Winkelsektoren mit dem Werkstoff des Formstücks umgossen oder umpreßt sind.The bracket is known to solve this problem records that the former angular sectors with the Material of the molding is cast or pressed.

In einigen Fällen hat es sich als vorteilhaft erwiesen, einen metallischen Werkstoff, insbesondere Edelstahl, Bronze oder Aluminium, in anderen Fällen einen nichtmetalli­ schen Werkstoff zu verwenden.In some cases, it has proven beneficial  a metallic material, especially stainless steel, Bronze or aluminum, in other cases a non-metallic use material.

Die Erfindung wird im folgenden an einem Ausführungsbeispiel unter Hinweis auf die beigefügte Zeichnung erläutert.The invention is based on an embodiment explained with reference to the accompanying drawing.

In der Zeichnung ist ein zu durchströmendes Rohr 2 in einem Massedurchflußmesser dargestellt, das dreieinhalb eine gemein­ same Achse 4 und im wesentlichen gleiche Abstände unter­ einander aufweisende Windungen 6, 8, 10, 12 aufweist. Diese Windungen 6, 8, 10, 12 sind an drei Stellen 16, 18, 20 in gleichgerichteten (in der Zeichnung untenliegenden) Winkelsektoren durch ein parallel zu der Achse 4 verlau­ fendes Formstück 14 miteinander verbunden. Die dem Formstück 14 gegenüberliegenden Winkelsektoren der inneren Windungen 8, 10 sind in an sich bekannter Weise parallel zu der Achse 4 in gegensinnige Schwingungen zu versetzen, die die eingangs angegebenen Torsionsschwingungen zur Folge haben. Das Form­ stück 14 ist um die in der Fig. 4 untenliegenden Winkel­ sektoren der Windungen 6, 8, 10, 12 gegossen oder mit Sinter­ material umpreßt und anschließend umsintert.In the drawing, a pipe 2 to be flowed through is shown in a mass flow meter, which has three and a half a common axis 4 and essentially the same spacing between turns 6 , 8 , 10 , 12 . These windings 6 , 8 , 10 , 12 are connected to one another at three points 16 , 18 , 20 in the same (in the drawing below) angular sectors by a fitting 14 parallel to the axis 4 . The angular sectors of the inner windings 8 , 10 opposite the shaped piece 14 are to be set in a manner known per se parallel to the axis 4 in opposite vibrations which result in the torsional vibrations specified at the outset. The shaped piece 14 is cast around the bottom in Fig. 4 angle sectors of the turns 6 , 8 , 10 , 12 or pressed with sintered material and then sintered.

Die Enden 22, 24 des Rohrs 2 sind vorrichtungsfest in Gehäusewänden 26, 28 eingespannt. Die Windungen 8, 10 werden in einem dem Formstück 14 gegenüberliegenden Sektor mittels eines Erregers 30 in gegensinnige Schwingungen versetzt. Zwischen den Windungen 8, 10 befinden sich einander gegenüberliegende Sensoren 32, 34. Die Einspannung der Enden 22, 24, der Erreger 30 und die Sensoren 32, 34 können so ausgebildet sein, wie dies in der EP-04 21 812 A1 be­ schrieben ist.The ends 22 , 24 of the tube 2 are fixed to the device in the housing walls 26 , 28 . The windings 8 , 10 are caused to oscillate in opposite directions in a sector opposite the shaped piece 14 by means of an exciter 30 . Sensors 32 , 34 are located opposite one another between the windings 8 , 10 . The clamping of the ends 22 , 24 , the exciter 30 and the sensors 32 , 34 can be designed as described in EP-04 21 812 A1.

Claims (3)

1. Halterung für ein zu durchströmendes Rohr (2) in einem Massedurchflußmesser mit dreieinhalb eine gemeinsame Achse (4) und Abstände untereinander aufweisenden Windungen (6, 8, 10, 12), die an drei Stellen (16, 18, 20) in wenigstens annähernd gleichgerichteten Winkelsektoren mit einem parallel zu der Achse (4) verlaufenden Formstück (14) verbunden sind, bei dem die dem Formstück (14) gegenüberliegenden Winkel­ sektoren der inneren Windungen (8, 10) parallel zu der Achse (4) in gegensinnige Schwingungen zu versetzen sind, dadurch gekennzeichnet, daß die erstgenannten Winkelsektoren mit dem Werkstoff des Formstücks (14) umgossen oder umpreßt sind. 1. Holder for a pipe to be flowed through ( 2 ) in a mass flow meter with three and a half common axis ( 4 ) and spaced turns ( 6 , 8 , 10 , 12 ), which at three points ( 16 , 18 , 20 ) in at least approximately rectified angular sectors with a parallel to the axis ( 4 ) shaped piece ( 14 ) are connected, in which the opposite the shaped piece ( 14 ) sectors of the inner turns ( 8 , 10 ) parallel to the axis ( 4 ) in opposite vibrations are offset, characterized in that the first-mentioned angle sectors are cast or pressed with the material of the shaped piece ( 14 ). 2. Halterung nach Anspruch 1, dadurch gekennzeichnet, daß der Werkstoff metallisch ist.2. Holder according to claim 1, characterized in that the material is metallic. 3. Halterung nach Anspruch 1, dadurch gekennzeichnet, daß der Werkstoff nichtmetallisch ist.3. Holder according to claim 1, characterized in that the material is non-metallic.
DE19914138840 1991-11-26 1991-11-26 Holder for a pipe to be flowed through in a mass flow meter Expired - Fee Related DE4138840C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914138840 DE4138840C2 (en) 1991-11-26 1991-11-26 Holder for a pipe to be flowed through in a mass flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914138840 DE4138840C2 (en) 1991-11-26 1991-11-26 Holder for a pipe to be flowed through in a mass flow meter

Publications (2)

Publication Number Publication Date
DE4138840A1 true DE4138840A1 (en) 1993-05-27
DE4138840C2 DE4138840C2 (en) 2003-02-06

Family

ID=6445608

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914138840 Expired - Fee Related DE4138840C2 (en) 1991-11-26 1991-11-26 Holder for a pipe to be flowed through in a mass flow meter

Country Status (1)

Country Link
DE (1) DE4138840C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0763720A1 (en) * 1995-09-13 1997-03-19 Endress + Hauser Flowtec AG Helical Coriolis mass flow sensor
EP1903319A1 (en) * 2005-07-12 2008-03-26 Oval Corporation Coriolis flow rate meter with flow tube of double loop structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046043A1 (en) 2009-10-27 2011-05-05 Endress + Hauser Flowtec Ag Vibration-type transducers
DE102011117282A1 (en) * 2011-08-16 2013-02-21 Krohne Ag Coriolis mass flowmeter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61275620A (en) * 1985-05-31 1986-12-05 Oval Eng Co Ltd Mass flowmeter
JPS61275621A (en) * 1985-05-31 1986-12-05 Oval Eng Co Ltd Mass flowmeter
JPS61290324A (en) * 1985-06-17 1986-12-20 Oval Eng Co Ltd Mass flowmeter
US4733569A (en) * 1985-12-16 1988-03-29 K-Flow Division Of Kane Steel Co., Inc. Mass flow meter
DE3619464A1 (en) * 1986-06-10 1987-12-23 Bosch Gmbh Robert IGNITION COIL FOR IGNITION SYSTEMS FOR INTERNAL COMBUSTION ENGINES
US4957005A (en) * 1989-10-05 1990-09-18 Fischer & Porter Company Coriolis-type flowmeter
ES2204933T3 (en) * 1994-09-19 2004-05-01 Endress + Hauser Flowtec Ag PROCEDURE FOR FIXING THE MEASUREMENT PIPES OF A MASS FLOW SENSOR.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0763720A1 (en) * 1995-09-13 1997-03-19 Endress + Hauser Flowtec AG Helical Coriolis mass flow sensor
US5675093A (en) * 1995-09-13 1997-10-07 Endress+Hauser Flowtec Ag Coriolis mass flow sensor including a single connection and support structure
EP1903319A1 (en) * 2005-07-12 2008-03-26 Oval Corporation Coriolis flow rate meter with flow tube of double loop structure
EP1903319A4 (en) * 2005-07-12 2014-09-24 Oval Corp Coriolis flow rate meter with flow tube of double loop structure

Also Published As

Publication number Publication date
DE4138840C2 (en) 2003-02-06

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: ABB PATENT GMBH, 68526 LADENBURG, DE

8304 Grant after examination procedure
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee