EP4370898A1 - Unité de liaison, module de tube de vibration et dispositif de mesure modulaire pour déterminer la densité d'un milieu de mesure - Google Patents

Unité de liaison, module de tube de vibration et dispositif de mesure modulaire pour déterminer la densité d'un milieu de mesure

Info

Publication number
EP4370898A1
EP4370898A1 EP22738481.5A EP22738481A EP4370898A1 EP 4370898 A1 EP4370898 A1 EP 4370898A1 EP 22738481 A EP22738481 A EP 22738481A EP 4370898 A1 EP4370898 A1 EP 4370898A1
Authority
EP
European Patent Office
Prior art keywords
connection unit
inlet
vibration tube
tube
outlet
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.)
Pending
Application number
EP22738481.5A
Other languages
German (de)
English (en)
Inventor
Benjamin Schwenter
Marc Werner
Markus Schütz
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.)
Endress and Hauser Flowtec AG
Original Assignee
Endress and Hauser Flowtec AG
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 and Hauser Flowtec AG, Flowtec AG filed Critical Endress and Hauser Flowtec AG
Publication of EP4370898A1 publication Critical patent/EP4370898A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/18—Supports or connecting means for meters
    • G01F15/185—Connecting means, e.g. bypass conduits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G01N2009/006—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis vibrating tube, tuning fork

Definitions

  • Connection unit for determining a density of a measuring medium
  • the invention relates to a connection unit, a vibration tube module and a modular measuring device for determining a density of a measuring medium.
  • Such measuring devices are also called Coriolis measuring devices.
  • To measure the density of a medium to be measured it is guided through an oscillating tube of the measuring device, while the oscillating tube is made to oscillate by an exciter and the resulting oscillation of the oscillating tube is measured.
  • the resulting vibration depends on the density of the measuring medium flowing through the vibration tube.
  • conclusions can finally be drawn about the density of the measuring medium. In this comparison, for example, a phase shift or an amplitude change between the excitation vibration and the resulting vibration of the vibration tube is used.
  • Coriolis measuring device In some industrial applications, measurement media are used which entail time-consuming and cost-intensive cleaning of the vibration tube. For such applications, it is desirable to change all parts of the Coriolis measuring device that come into contact with the measuring medium after each measuring cycle, ie to use them only once.
  • Such a Coriolis measuring device is known, for example, from the previously unpublished patent application DE 102021105397.8.
  • the parts of the Coriolis measuring device that have to be changed are in particular the vibration tube and the connection unit of the Coriolis measuring device.
  • the Coriolis measuring device and the parts to be replaced must meet criteria such as low manufacturing costs, maximum reliability and the highest quality. These criteria cannot be realized in an obvious way, particularly for the connection unit, since the connection unit has a complex geometric shape and is exposed to high loads during operation.
  • connection unit which causes low production costs but allows maximum reliability and maximum quality in operation.
  • connection unit for at least one vibration tube module of a modular measuring device for determining a density of a measuring medium according to claim 1.
  • the connection unit according to the invention comprises: a measurement medium inlet, which extends along a first axis, a measurement medium outlet, which extends along a second axis, at least one first vibration tube inlet which is fluidically connected to the measurement medium inlet, at least one first vibration tube outlet which is fluidically connected to the measurement medium outlet is connected, wherein the measuring medium inlet and the measuring medium outlet are separated from one another with respect to a first plane and are mechanically connected to one another by means of at least one support unit, the first axis and the second axis each spanning an angle greater than 45° to the first plane.
  • connection unit according to the invention in particular thanks to the support unit which mechanically connects the measurement medium inlet to the measurement medium outlet, makes it possible for loads occurring during operation to be absorbed by the measurement medium inlet and the measurement medium outlet. This avoids individual areas of the connection unit being subjected to excessive stress. As a result of the distribution of forces that is possible as a result, it is possible to use materials and wall thicknesses or geometries for the production of the connection unit, which contribute to reducing the production costs.
  • connection unit further comprises a mounting area for detachably fastening the connection unit in a modular measuring device.
  • connection unit is made of a material that includes a plastic.
  • the first vibrator tube inlet extends along a third axis and the first vibrator tube outlet extends along a fourth axis.
  • the third axis and the fourth axis lie in a second plane which is orthogonal to the first plane.
  • connection unit further comprises a second vibration tube inlet, which is fluidically connected to the measurement medium inlet, and further comprises a second vibration tube outlet, which is fluidically connected to the measurement medium outlet is, so that the connection unit for a second vibration tube of a modular measuring device can be used.
  • the connection unit comprises: a measurement medium inlet, which extends along a first axis, a measurement medium outlet, which extends along a second axis, a tubular support unit with a tube inlet and a tube outlet, a first vibration tube inlet, which is fluidically connected to the measurement medium inlet, a first vibrating tube outlet which is connected to the tube inlet of the tubular support unit, a second vibrating tube inlet which is connected to the tube outlet of the tubular support unit, a second vibrating tube outlet which is fluidically connected to the measurement medium outlet, the measurement medium inlet and the measurement medium outlet relative to one another in a first plane are separated from each other and are mechanically connected to one another by means of the tubular support unit, the first axis and the second axis each having an angle greater than 45° to the first plane a open.
  • the modular measuring device comprises: a connection unit according to the invention, a first vibration tube with a fixing area, a first tube inlet and a first tube outlet, wherein the fixing area is complementary to the fastening area of the connection unit, and the fixing area is non-positively connected to the fastening area by an adhesive bond, a screw connection, a Welding or riveting is connected, wherein the first tube inlet is connected to the first vibration tube inlet of the connection unit and the first tube outlet is connected to the first vibration tube outlet of the connection unit.
  • a pin of the fixing portion is welded to a through hole of the attachment portion.
  • the modular measuring device comprises: a vibration tube module according to the invention, a holding device which is suitable for being connected to the mounting area of the connection unit in order to detachably fasten the vibration tube module in the holding device.
  • the modular measuring device further comprises a locking element for releasably locking the vibration tube module in the measuring device in the mounting area.
  • the locking element is a latch.
  • connection unit 1 an illustration of a connection unit according to the invention
  • connection unit 3 an exemplary embodiment of the connection unit shown in FIG. 1 with a fastening area
  • Fig. 4 a sectional view of the connection unit shown in Figure 1,
  • connection unit 5 an alternative embodiment of a connection unit according to the invention.
  • Figure 1 shows an exemplary representation of a connection unit 3 according to the invention for a vibration tube module 2 of a modular measuring device 1.
  • connection unit 3 connects to at least one first vibration tube 20 in order to form the vibration tube module 2 .
  • the connection unit 3 comprises a measuring medium inlet 30, a measuring medium outlet 31, at least one first vibration tube inlet 32 and at least one first Vibration tube outlet 33.
  • the connection unit 3 is preferably made of an inexpensive material, for example plastic, in particular PP, PC, nylon, PSU or PVDF.
  • the connection unit 3 is preferably made of a plastic that can be sterilized by gamma radiation.
  • the material for the connection unit 3 is preferably transparent so that the user can see when the measurement medium flows through the connection unit 3 .
  • the connection unit 3 is produced, for example, by means of an injection molding process.
  • the measuring medium inlet 30 is used to admit a measuring medium into the connection unit 3 or into the vibration tube module 2.
  • the measuring medium inlet 30 has, for example, a geometry that makes it possible to push a hose over the measuring medium inlet 30 and, if necessary, to the measuring medium inlet 30 by means of a fastener , for example a cable tie or a clamp.
  • the measurement medium inlet 30 is designed, for example, in the shape of a mushroom.
  • the measurement medium inlet 30 extends along a first axis A1 and is fluidically connected to at least the first vibration tube inlet 32 .
  • the measurement medium inlet 30 can also be fluidically connected to a second vibration tube inlet 37 .
  • the measurement medium inlet 30 thus serves as a distributor for the measurement medium.
  • the measuring medium can thus flow through two vibration tubes at the same time.
  • the measuring medium outlet 31 is used to let out a measuring medium from the connection unit 3 or the vibration tube module 2 .
  • the measuring medium outlet 31 is preferably configured identically to the measuring medium inlet 30 .
  • the measurement medium outlet 31 extends along a second axis A2 and is fluidically connected to at least one first vibration tube outlet 33 .
  • the measurement medium outlet 31 can also be connected to a second vibration tube outlet 38, as shown in FIG.
  • the measurement medium inlet 30 and the measurement medium outlet 31 are opposite one another.
  • the measurement medium inlet 30 and the measurement medium outlet 31 are separated from one another with respect to a first plane E1, i.e. the first plane E1 extends between the measurement medium inlet 30 and the measurement medium outlet 31.
  • the first plane E1 forms, for example, a mirror plane for the measurement medium inlet 30 and the measurement medium outlet 31 and /or the connection unit 3.
  • a support unit 50 connects the measurement medium inlet 30 mechanically to the measurement medium outlet 31. This makes it possible to act on the measurement medium inlet 30 Efficiently transfer forces to the measuring medium outlet 31 and vice versa.
  • the support unit 50 has, for example, two struts (see FIG. 1). Of course, the support unit 50 can also have fewer or more than two struts.
  • the cross-sectional area of the strut(s) can be chosen arbitrarily.
  • the cross-sectional area of the strut(s) is, for example, rectangular, square, circular, elliptical, annular, or similar.
  • the struts are preferably arranged parallel to the first axis A1 and the second axis A2, so that the measuring medium inlet 30 and/or forces acting on the measuring medium outlet 31 can be optimally transmitted between the measuring medium inlet 30 and the measuring medium outlet 31 .
  • the strut or struts are preferably designed in such a way that the axial moment of inertia of the strut(s) is greatest.
  • the cross-sectional shape of the strut(s) therefore preferably has a height which exceeds its width, the height being measured parallel to the third axis A3 (see FIG. 1).
  • the first axis A1 and the second axis A2 are arranged at an angle greater than 45° to the first plane E1. This enables an optimal transmission of force between the measuring medium inlet 30 and the measuring medium outlet 31 by means of the support unit 50 to be possible.
  • the first axis A1 and the second axis A2 are preferably arranged at an angle between or equal to 45° and 90° to the first plane E1. It is thus achieved that forces acting on the measuring medium inlet 30 and/or the measuring medium outlet 31 are optimally transmitted through the support unit 50 and hoses connected to the connection unit 3 can be guided away from the modular measuring device 1 in a space-saving manner.
  • the first axis A1 and the second axis A2 are arranged at an angle of 90° to the first plane E1.
  • the connection unit 3 also has a mounting area 36 for detachably mounting the connection unit 3 in the modular measuring device 1 .
  • the mounting area 36 is preferably arranged centrally between the measurement medium inlet 30 and the measurement medium outlet 31 .
  • the mounting area 36 is suitable for a locking element 16 of the modular measuring device 1 to engage in the mounting area 36 in a detachable manner.
  • the locking element 16 is, for example, a latch.
  • the toggle fastener is formed, for example, by means of a rod which is attached to the holding device 10 .
  • the mounting area 36 is, for example, a channel-shaped depression for receiving a cylindrical bolt, ie the locking element 16, as shown schematically in FIG.
  • the mounting area 36 can also have other geometric shapes, such as a threaded hole or other shapes. Thanks to The mounting area 36 allows the vibration tube module 2 to be fixed quickly and securely in a holding device 10 of the modular measuring device 1 . This facilitates modular use, ie the use of different vibration tube modules 2, of the modular measuring device 1.
  • the first vibration tube inlet 32 is arranged along a third axis A3 and the first vibration tube outlet 33 is arranged along a fourth axis A4.
  • the second vibration tube inlet 37 if present, is arranged parallel to the third axis A3.
  • the second vibration tube outlet 38 if present, is arranged parallel to the fourth axis A4.
  • the third axis A3 and the fourth axis A4 are preferably arranged parallel to one another.
  • the third axis A3 and the fourth axis A4 are arranged in a second plane E2.
  • the first axis A1 and the second axis A2 are preferably arranged parallel to the second plane E2.
  • the first plane E1 and the second plane E2 are preferably arranged orthogonally to one another.
  • Figure 3 shows the connection unit 3 with a view of the second vibration tube inlet 37.
  • a recess is preferably provided in the second vibration tube inlet 37 to accommodate an O-ring.
  • the connection unit 3 has a fastening area 34 in order to be connected to a fixing area 21 of the first vibration tube 20 and/or the second vibration tube 40.
  • the fastening area 34 of the connection unit 3 preferably has a pin which can be connected at its extremity to a through hole of the fixing area 21 (see FIG. 3 and FIG. 4).
  • the pin is inserted into the through hole and deformed by ultrasonic welding, so that a positive connection is created between the connection unit 3 and the vibration tube module 2 .
  • other connection techniques are also possible in order to produce a non-positive connection between the connection unit 3 and the first vibration tube 20 or between the connection unit 3 and the second vibration tube 40 .
  • FIG. 4 shows the pin of the fastening area 34, which is connected to the through-hole of the fixing area 21.
  • the pin can also be formed by a rivet or screw or the like.
  • the pin or rivet or screw can also be dispensed with if the attachment area 34 of the connection unit 3 is inseparably connected to the attachment area 21 of the vibration tube module 2 by another type of attachment.
  • Such other types of attachment include, for example, gluing, welding, or similar types of attachment.
  • inseparable types of attachment is that a seal between the connection unit 3 and the vibration module 2 can be dispensed with.
  • FIG. 2 shows the modular measuring device 1, which furthermore preferably has a receptacle 11 in the holding device 10 in order to fasten the vibration tube module 2 in the modular measuring device 1.
  • the receptacle 11 is a groove, for example.
  • the modular measuring device 1 has, for example, a temperature sensor 12 and a primary exciter component 13 which is suitable for interacting with a secondary exciter component 25 of the first vibrating tube 20 in order to cause the first vibrating tube 20 to vibrate.
  • the modular measuring device 1 has a primary sensor component 14 which is suitable for interacting with a secondary sensor component 24 in order to determine the vibration of the first vibration tube 20 .
  • the second vibration tube 40 is identical to the first vibration tube 20 and has the same components in order to cause the second vibration tube 40 to vibrate or to determine the vibration of the second vibration tube 40 .
  • the first vibration tube 20 has a first tube inlet 22 and a first tube outlet 23 .
  • the first tube inlet 22 is connected to the first vibration tube inlet 32 of the connection unit 3 and the first tube outlet 23 is connected to the first vibration tube outlet 33 of the connection unit 3.
  • a sealing ring is preferably arranged between the first vibration tube inlet 32 and the first tube inlet 22 and between the first vibration tube outlet 33 and the first tube outlet 23 (not shown).
  • the second vibration tube 40 is identical to the first vibration tube 20 and is arranged such that the second vibration tube inlet 37 and the second vibration tube outlet 38 are in fluid communication with the second tube inlet 42 and the second tube outlet 43 of the second vibration tube 40, respectively.
  • FIG. 5 shows a sectional drawing of an alternative embodiment of the connection unit 3, in which the support unit 50 is designed as a tube.
  • the tube is preferably arranged with its longitudinal axis orthogonal to the first plane E1.
  • the tube has a tube inlet 51 and a tube outlet 52 .
  • the tube has an internal diameter of between 2 mm and 15 mm and a wall thickness between 0.5 mm and 4 mm.
  • the measurement medium inlet 30 is only connected to the first oscillation tube inlet 32 (due to the sectional drawing, this is indicated only schematically with dotted ellipses and dashes).
  • the tube fluidly connects the first vibration tube outlet 33 to the second vibration tube inlet 37 .
  • the tube inlet 51 is thus connected to the first vibration tube outlet 33 and the tube outlet 52 is connected to the second vibration tube inlet 37 .
  • the measurement medium outlet 31 is only connected to the second vibration tube outlet 38 .
  • the first vibration tube 20 could not be shown in FIG. 5 due to the sectional drawing.
  • the dotted lines partially indicate the course of the first vibrating tube 20 and the dashed lines partially indicate the course of the second vibrating tube 40 . Since in this embodiment the medium to be measured is first conducted through the first oscillation tube 20 and then through the second oscillation tube 40, this embodiment is particularly suitable for highly precise measurements.
  • the vibration tube module 2 described above, or the modular measuring device 1 described above, can of course also be operated with the alternative embodiment of the connection unit 3 .

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne une unité de liaison (3) pour au moins un module de tube de vibration (2) d'un dispositif de mesure modulaire (1) pour déterminer la densité d'un milieu de mesure, comprenant : une entrée de milieu de mesure (30) qui s'étend le long d'un premier axe (A1) ; une sortie de milieu de mesure (31) qui s'étend le long d'un second axe (A2) ; au moins une première entrée de tube de vibration (32), qui est en communication fluidique avec l'entrée de milieu de mesure (30) ; au moins une première sortie de tube de vibration (33), qui est en communication fluidique avec la sortie du milieu de mesure (31) ; l'entrée de milieu de mesure (30) et la sortie du milieu de mesure (31) étant opposées l'une à l'autre par rapport à un premier plan (E1), de telle sorte qu'elles sont séparées l'une de l'autre, et sont reliées mécaniquement l'une à l'autre au moyen d'au moins une unité de support (50), et le premier axe (A1) et le second axe (A2) formant chacun un angle supérieur à 45° par rapport au premier plan (E1).
EP22738481.5A 2021-07-14 2022-07-04 Unité de liaison, module de tube de vibration et dispositif de mesure modulaire pour déterminer la densité d'un milieu de mesure Pending EP4370898A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021118263.8A DE102021118263A1 (de) 2021-07-14 2021-07-14 Anschlusseinheit, Schwingungsrohrmodul und modulare Messvorrichtung zum Ermitteln einer Dichte eines Messmediums
PCT/EP2022/068404 WO2023285185A1 (fr) 2021-07-14 2022-07-04 Unité de liaison, module de tube de vibration et dispositif de mesure modulaire pour déterminer la densité d'un milieu de mesure

Publications (1)

Publication Number Publication Date
EP4370898A1 true EP4370898A1 (fr) 2024-05-22

Family

ID=82446618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22738481.5A Pending EP4370898A1 (fr) 2021-07-14 2022-07-04 Unité de liaison, module de tube de vibration et dispositif de mesure modulaire pour déterminer la densité d'un milieu de mesure

Country Status (4)

Country Link
EP (1) EP4370898A1 (fr)
CN (1) CN117677832A (fr)
DE (1) DE102021118263A1 (fr)
WO (1) WO2023285185A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768385A (en) * 1986-08-13 1988-09-06 Micro Motion, Inc. Parallel path Coriolis mass flow meter
DE102006013601A1 (de) * 2006-03-22 2007-09-27 Endress + Hauser Flowtec Ag Meßaufnehmer vom Vibrationstyp
DE202009006488U1 (de) 2009-05-04 2009-08-06 Bürkert Werke GmbH & Co. KG Modulares optisches Sensorsystem für fluide Medien
DE102010029343A1 (de) 2010-05-27 2011-12-01 Endress + Hauser Flowtec Ag Adapter zum Anschluss eines flanschlossen Durchflussmessgeräts an eine Rohrleitung
DE202012105029U1 (de) 2012-12-21 2014-03-24 Hans Sasserath & Co. Kg Rohrtrenneranordnung
DE102014005783A1 (de) 2014-04-23 2015-10-29 Armaturenfabrik Franz Schneider GmbH + Co. KG Verbindungsvorrichtung zum Herstellen eines Anschlusses zwischen einem Messgerät/Ventilblock und einer Pipeline
CN208805225U (zh) 2017-07-10 2019-04-30 Wika亚历山大·威甘德欧洲股份两合公司 用于将处理室与测量系统连接的连接适配器以及测量设备
US11585687B2 (en) * 2019-04-02 2023-02-21 Malema Engineering Corporation Polymer-based Coriolis mass flow sensor fabricated through casting
DE102019134806A1 (de) 2019-12-17 2021-06-17 Endress+Hauser Flowtec Ag Messrohranordnung, Messrohrsystem und Trägereinheit eines Messgerätes zum Erfassen eines Massedurchflusses, einer Viskosität, einer Dichte und/oder einer davon abgeleiteten Größe eines fließfähigen Mediums
DE102020114518A1 (de) * 2020-05-29 2021-12-02 Endress+Hauser Flowtec Ag Messaufnehmer eines Coriolis-Durchflussmessgerätes und Coriolis-Durchflussmessgerät
DE102020131563A1 (de) * 2020-11-27 2022-06-02 Endress+Hauser Flowtec Ag Messaufnehmer eines Messgerätes und Messgerät

Also Published As

Publication number Publication date
DE102021118263A1 (de) 2023-01-19
WO2023285185A1 (fr) 2023-01-19
CN117677832A (zh) 2024-03-08

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