WO2018068942A1 - Dispositif pour déterminer un débit - Google Patents

Dispositif pour déterminer un débit Download PDF

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Publication number
WO2018068942A1
WO2018068942A1 PCT/EP2017/071600 EP2017071600W WO2018068942A1 WO 2018068942 A1 WO2018068942 A1 WO 2018068942A1 EP 2017071600 W EP2017071600 W EP 2017071600W WO 2018068942 A1 WO2018068942 A1 WO 2018068942A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring tube
tube
liquid
inner part
mass
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.)
Ceased
Application number
PCT/EP2017/071600
Other languages
German (de)
English (en)
Inventor
Heinerich Hagenmeyer
Mike Touzin
Wolfgang Drahm
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 WO2018068942A1 publication Critical patent/WO2018068942A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G01F1/74—Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
    • 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
    • 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
    • G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/04—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having electrical weight-sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G17/00—Apparatus for or methods of weighing material of special form or property
    • G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00

Definitions

  • the invention relates to a device for determining a flow, in particular a mass flow, a
  • a disadvantage of such gamma-ray gauges is that the operation is based on radioactive isotopes, and therefore complicated regulations must be met.
  • the invention is therefore based on the object, a device for
  • a device for determining a flow, in particular a mass flow, a solids-laden liquid having at least the following:
  • a measuring tube for guiding the liquid
  • a magnetic inductive flow measuring device which determines a volume flow of the liquid through the measuring tube
  • a weighing device which is a mass in the measuring tube
  • a device which determines a volumetric flow rate of a solids-laden liquid flowing through a measuring tube by means of a magnetically inductive flow measuring device and at the same time determines the mass of the liquid present in the measuring tube via a weighing device so as to be able to determine a mass flow.
  • an advantageous embodiment of the invention provides that the measuring tube has two endmost tube spring sections, so that an inner part of the measuring tube with a feed pipe or with a drain pipe via the Bourdon tube sections is connectable, wherein the Bourdon tube each at least two recesses, preferably in the form of at least a pair of slots, have.
  • the embodiment provides that via a dimensioning of the recesses a Federsteifig is speed of the respective Bourdon tube section adjusted so that the spring stiffness speed of the two Bourdon tube sections has a lower rigidity than a
  • the embodiment can provide that the dimensioning of the recesses is further selected such that the inner part of the measuring tube moves out of a rest position, in which the inner part of the measuring tube is when the measuring tube is not flowed through with the liquid, if the measuring tube is traversed with the liquid and / or that at least the inner part of the measuring tube and the
  • Bourdon tube sections are lined with an elastic, preferably a liner having a rubber and / or the recesses are offset from each other in the axial direction and are formed such that at least two adjacent recesses overlap with an end region in the azimuthal direction.
  • the embodiment can also provide that the tube spring sections and the inner part of the measuring tube are made of a one-piece material or the tube spring sections and the inner part of the measuring tube are joined together.
  • a further advantageous embodiment of the invention provides that the weighing device has a force sensor, which is mechanically connected to the measuring tube and determined to determine the mass of a force on the inner part of the measuring tube, so that the weighing device based on the force in the inner part the measuring tube located liquid determined.
  • An alternative embodiment of the invention provides that at least one of the two Bourdon tube sections has a strain gauge, which determines a deformation on the at least one Bourdon tube section, and wherein the weighing device determines the mass of the liquid located in the inner part of the measuring tube based on the deformation.
  • Evaluation unit determines the mass flow of the fluid pressure dependent.
  • FIG. 1 shows a schematic representation of an embodiment of the device according to the invention
  • Fig. 2 a section of the end-modified pipe sections or
  • FIG. 3 is a sectional view A-A corresponding to that shown in Fig. 2
  • FIG. 1 shows a schematic representation of an embodiment of the inventive device for determining a mass flow of a flowing solids-laden liquid 12.
  • Such liquids 12 may in principle constitute any flowable electrically conductive liquids, in particular dissolved in water bulk materials.
  • the device according to the invention comprises a measuring tube 2, 3, 4 through which the liquid 12 flows, a weighing device 7 which is mechanically connected to an inner part of the measuring tube 2, a magnetically inductive flow measuring device 1 with a corresponding
  • a magnetically inductive flow measuring device for example, a known from the prior art magneto-inductive flow meter can be used. This includes next to the measuring tube, which
  • preferably comprises metal, a unit for generating a magnetic field, which passes through the measuring tube, at least two on the measuring tube
  • the magnetic field measuring electrodes which are provided for detecting the inductively generated measurement voltage, in order to determine a flow value or a flow signal for the flowing liquid on the basis of the measurement voltage.
  • the weighing device 7 can, for example, comprise a force sensor, which is mechanically connected to the inner part of the measuring tube 2, for example via a connecting piece 6.
  • the weighing device 7 on a rigid support frame 8 for the force sensor.
  • the support frame 8 is
  • the force sensor is also mechanically connected to the support frame and preferably in the direction of gravitational acceleration g
  • the force sensor measures a force which substantially comprises a weight force acting on the inner part of the measuring tube.
  • the force on the measuring tube without liquid is preferably related to the force on the measuring tube with liquid.
  • the weighing device can measure a deflection of the measuring tube 2 due to the mass of the liquid, the measuring tube 2 is movably connected at a first end to an inlet pipe 10 and at a second end to a drain pipe 11.
  • the device can each one
  • the device may instead of the rubber buffer and two tube springs 3, 3 ' have.
  • Bourdon tubes offer the advantage that an unwanted movement of the measuring tube in the axial direction is avoided, but at the same time a movement in the vertical direction is possible with correct dimensioning.
  • the tube springs 3 and 3 ' are arranged for this purpose at a first end of the measuring tube and at a second end of the measuring tube, wherein the tube springs 3, 3 ' and the measuring tube are preferably formed in one piece, ie the tube springs are each end prepared in the measuring tube.
  • the measuring tube preferably has a metal and, for example, a water-jet cutting method for producing the recesses can be used to produce the tube springs. Also conceivable, of course, are other methods known from the prior art for preparing the metallic measuring tube. By means of the method for preparing the coil springs, the
  • Recesses 15 dimensioned so that a spring stiffness c of the respective Bourdon tube section or the Bourdon tube is adjusted so that the spring stiffness of the two Bourdon tube sections have a lower rigidity than a stiffness of the weighing device, so that the inner part of the measuring tube 2 from a rest position, in which is the inner part of the measuring tube 2, when the measuring tube 2, 3, 4 is not flowed through or filled with the liquid 12, moved out when the measuring tube 2, 3, 4 is flowed through or filled with the liquid 12.
  • the evaluation unit 15 determines a mass flow value based on the determined mass and the flow value. In the evaluation unit 15 pressure-dependent characteristics can be stored, so that the
  • Evaluation unit 15 can determine the mass flow of the liquid 12 depending on the pressure.
  • FIG. 2 shows a section of the end-modified pipe sections or pipe springs 3, 3 '
  • FIG. 3 shows a sectional view AA corresponding to the sectional plane shown in FIG.
  • the spring stiffness of the coil springs c can be dimensioned by the dimensions of the pair of slots or the two recesses 15 such that the tube springs 3, 3 'is relatively soft with respect to the rigidity of the load cell 7. In this way, the systematic error due to the force shunt can be kept small.
  • the dimensions of the recesses of the coil springs are selected specifically.

Landscapes

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

Abstract

L'invention concerne un dispositif pour déterminer un débit, en particulier un débit massique d'un liquide (12) chargé de matières solides, ce dispositif comprenant au moins : un tube de mesure (2, 3, 4) destiné à conduire le liquide (12) ; un débitmètre à induction magnétique (1) qui détermine un débit volumique du liquide (12) à travers le tube de mesure (2, 3, 4) ; un dispositif de pesée (6, 7, 8, 9) qui détermine une masse du liquide (12) se trouvant dans le tube de mesure (2, 3, 4) ; une unité d'évaluation (14) qui détermine le débit massique du liquide (12) au moyen du débit volumique déterminé et de la masse déterminée.
PCT/EP2017/071600 2016-10-13 2017-08-29 Dispositif pour déterminer un débit Ceased WO2018068942A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119541.3A DE102016119541A1 (de) 2016-10-13 2016-10-13 Vorrichtung zur Bestimmung eines Durchflusses
DE102016119541.3 2016-10-13

Publications (1)

Publication Number Publication Date
WO2018068942A1 true WO2018068942A1 (fr) 2018-04-19

Family

ID=59799355

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/071600 Ceased WO2018068942A1 (fr) 2016-10-13 2017-08-29 Dispositif pour déterminer un débit

Country Status (2)

Country Link
DE (1) DE102016119541A1 (fr)
WO (1) WO2018068942A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251226A (en) * 1963-03-12 1966-05-17 Vincent J Cushing Apparatus for measuring mass flow and density
FR2549220A1 (fr) * 1983-07-13 1985-01-18 Kobe Steel Ltd Procede de mesure du debit de matiere en particules dispersee dans un courant a deux phases solides/gaz
WO2001025732A1 (fr) * 1999-10-01 2001-04-12 Dynatechnik Messsysteme Gmbh Procede et dispositif de mesure de flux de matiere en vrac
WO2009030870A1 (fr) * 2007-09-05 2009-03-12 University Of Leeds Système de mesure de débit multiphase
WO2012118775A2 (fr) * 2011-03-02 2012-09-07 Robert Batey Appareil pour la détection d'une densité de milieu dans un pipeline
US20130008260A1 (en) * 2011-07-09 2013-01-10 Andrew Polczynski Flow Measuring Device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285239A (en) * 1980-05-01 1981-08-25 Heine Otto R Apparatus for measuring varying density of a slurry flowing in a pipeline
JPH08334396A (ja) * 1995-06-07 1996-12-17 Riyuuki Eng:Kk 排土量の計測方法と装置
US8915145B1 (en) * 2013-07-30 2014-12-23 Fred G. Van Orsdol Multiphase mass flow metering system and method using density and volumetric flow rate determination

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251226A (en) * 1963-03-12 1966-05-17 Vincent J Cushing Apparatus for measuring mass flow and density
FR2549220A1 (fr) * 1983-07-13 1985-01-18 Kobe Steel Ltd Procede de mesure du debit de matiere en particules dispersee dans un courant a deux phases solides/gaz
WO2001025732A1 (fr) * 1999-10-01 2001-04-12 Dynatechnik Messsysteme Gmbh Procede et dispositif de mesure de flux de matiere en vrac
WO2009030870A1 (fr) * 2007-09-05 2009-03-12 University Of Leeds Système de mesure de débit multiphase
WO2012118775A2 (fr) * 2011-03-02 2012-09-07 Robert Batey Appareil pour la détection d'une densité de milieu dans un pipeline
US20130008260A1 (en) * 2011-07-09 2013-01-10 Andrew Polczynski Flow Measuring Device

Also Published As

Publication number Publication date
DE102016119541A1 (de) 2018-04-19

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