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WO1997010490A1 - Dispositif pour determiner la quantite de liquide s'ecoulant a travers un systeme de tuyaux - Google Patents

Dispositif pour determiner la quantite de liquide s'ecoulant a travers un systeme de tuyaux Download PDF

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Publication number
WO1997010490A1
WO1997010490A1 PCT/DK1996/000377 DK9600377W WO9710490A1 WO 1997010490 A1 WO1997010490 A1 WO 1997010490A1 DK 9600377 W DK9600377 W DK 9600377W WO 9710490 A1 WO9710490 A1 WO 9710490A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow duct
transducer
ribs
transducers
dome
Prior art date
Application number
PCT/DK1996/000377
Other languages
English (en)
Inventor
Henrik Norgreen
Original Assignee
Raab Karcher Energieservice 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 Raab Karcher Energieservice Gmbh filed Critical Raab Karcher Energieservice Gmbh
Priority to AU67863/96A priority Critical patent/AU6786396A/en
Publication of WO1997010490A1 publication Critical patent/WO1997010490A1/fr

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
    • G01F1/66—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

Definitions

  • a device for determining the amount of liquid flowing through a piping system A device for determining the amount of liquid flowing through a piping system.
  • the invention concerns a device for determining the flow amount of liquid in a pipe system, said pipe system hav ⁇ ing inserted therein an ultrasonic meter which consists of a flow duct at whose ends a first measuring transducer and a second measuring transducer, respectively, are ar- ranged, said measuring transducers being suspended cen ⁇ trally at the ends of the flow duct.
  • Danish Published Application No. 161258 discloses a meas ⁇ uring device in which a transducer is mounted at the ends of a measuring pipe.
  • the liquid whose flow amount is to be determined is conveyed via an inlet distribution cham ⁇ ber to a transducer, which is mounted at one end of a flow duct, and further through the flow duct to the other end at which a second transducer is mounted.
  • This device thus involves a system in which liquid is conveyed into distribution chambers which are staggered with respect to the axial direction of the measuring path. This known de ⁇ vice therefore requires some mounting space because of the position of the distribution chambers.
  • European Patent Specification No. 88235 discloses a de ⁇ vice of the type defined in the introductory portion of claim 1.
  • This known transducer incorporates distri ⁇ bution chambers which are positioned axially with the flow duct itself in one embodiment.
  • the transducers are suspended centrally in the distribution chambers to the flow duct, without it being indicated at all how the sus ⁇ pension is constructed.
  • the object of the invention is to provide a device of the type defined in the introductory portion of claim 1 which takes up less space and is moreover inex ⁇ pensive to produce.
  • the stated object is achieved by the device of claim 1, which is characterized in that the measuring transducers are suspended at the ends of the flow duct, and that they are suspended by rib-shaped means or from a plate having one or more through bores, the size and shape of said through bores being dimensioned for a given liquid flow.
  • the transducers are suspended from four ribs, a sturdy suspension is obtained, capable of foxedly securing the transducers even at high liquid flow rates.
  • dome-shaped unit which has a plane face having essentially the same diameter as the diameter of the transducers. It is a further advantage when the dome-shaped unit has a cavity extending from the plane face to receive the transducer, as the transducer is hereby protected well.
  • the transducer is retained very stably and fixedly in the dome-shaped unit.
  • the ribs have a curved shape along their axis of sym- metry, such as a convex or tray shape with a plane face from which the curvature begins at each side of the per ⁇ pendicular axis of symmetry of the plane face, it is en ⁇ sured that the liquid flow through the duct is disturbed as little as possible.
  • fig. 1 is sectional view of the device according to the invention.
  • fig. 2 shows the transducer with suspension according to the invention
  • fig. 3 shows a dome-shaped unit to protect the trans ⁇ ducer
  • fig. 4 is a perspective view of an embodiment of a rib to secure the transducer
  • fig. 5 is a cross-sectional view of a ring to secure the ribs of fig. 4.
  • a device for determining the flow of a liquid in a pipe system consists of a pipe 1 having a duct 3 which is terminated at both ends by a funnel 2.
  • a small pipe section having threads is arranged in extension of the funnel 2 and is intended to receive a gasket ring 6 adapted to engage the bottom of the small pipe section.
  • a transducer 4 may be engaged at the oppo ⁇ site side of the gasket ring 6 and be tightened by means of a nut 5.
  • the transducer 4 is suspended cen ⁇ trally by means of ribs 7, whose opposite ends with re ⁇ spect to the transducer are terminated by a ring 8.
  • This structure may be inserted in a simple manner by means of the gasket ring 6 and be tightened by means of the nut 5, as shown in fig. 1.
  • Fig. 3 schematically shows an embodiment in which the transducer 4 is protected by a dome-shaped unit 8, which has a base face 13 having essentially the same diameter as the transducer 4.
  • the dome-shaped unit may be constructed with a depression (not shown) in which the transducer may be positioned and be well protected there.
  • Fig. 4 shows a preferred embodiment of the ribs 7, as these are formed with a convex or tray shape, which also contributes to ensuring that liquid flowing through the flow duct 3 of fig. 1 is disturbed as little as possible.
  • fig. 5 shows a cross-section of the ring 8 which has two faces 11, 12 capable of engaging the small pipe in fig. 1, more particularly the gasket ring 6 with the face 12 and with the face 11 along the inner surface of the small pipe.
  • Fig. 5 additionally shows that the ring 10 has a curved surface 10 which may be dimensioned for the funnel 2 in fig. 1 so that the face 10 merges evenly into the funnel 2.
  • the dome-shaped unit may be shaped more pointedly than shown in fig. 3.

Landscapes

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

Abstract

L'invention porte sur un compteur ultrasonique servant à déterminer l'écoulement d'un liquide dans un système de tuyaux, ledit compteur étant inséré dans ledit système de tuyaux. Ledit compteur est constitué d'un canal d'écoulement à chaque extrémité duquel est suspendu de manière centrale un transducteur (4). La suspension est réalisée au moyen d'une unité en forme de dôme (8), qui est éventuellement munie d'une cavité où chaque transducteur (4) peut être logé, ladite unité en forme de dôme étant reliée soit à des nervures (7) dont les extrémités opposées se terminent par un anneau (8), soit à une plaque ayant des alésages. L'alimentation en énergie des transducteurs est effectuée à travers des lignes (13) longeant l'intérieur de l'une des nervures (7). Chaque transducteur (4) est fixé aux extrémités dudit conduit d'écoulement avec son système de suspension, dans une petite partie du tuyau pouvant recevoir un joint d'étanchéité (6) sur lequel est placé l'anneau (8) de l'unité en forme de dôme. L'assemblage est serré au moyen d'un écrou (5). La structure obtenue occupe peu de place et offre une très grande flexibilité au moment du remplacement d'un transducteur (4).
PCT/DK1996/000377 1995-09-11 1996-09-10 Dispositif pour determiner la quantite de liquide s'ecoulant a travers un systeme de tuyaux WO1997010490A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67863/96A AU6786396A (en) 1995-09-11 1996-09-10 A device for determining the amount of liquid flowing through a piping system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK99495 1995-09-11
DK0994/95 1995-09-11

Publications (1)

Publication Number Publication Date
WO1997010490A1 true WO1997010490A1 (fr) 1997-03-20

Family

ID=8099828

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1996/000377 WO1997010490A1 (fr) 1995-09-11 1996-09-10 Dispositif pour determiner la quantite de liquide s'ecoulant a travers un systeme de tuyaux

Country Status (2)

Country Link
AU (1) AU6786396A (fr)
WO (1) WO1997010490A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6390626B2 (en) 1996-10-17 2002-05-21 Duke University Image projection system engine assembly
US6473236B2 (en) 1998-10-23 2002-10-29 Duke University Projection lens and system
EP1887328A1 (fr) * 2006-08-08 2008-02-13 Siemens VDO Automotive AG Débitmètre à ultrasons monté coaxialement
DE202008014619U1 (de) * 2008-11-04 2009-12-24 Junker, Raul Ultraschall-Durchflussmesser
DE202009011310U1 (de) * 2009-08-19 2010-09-30 Junker, Raul Ultraschalldurchflussmesser mit Universal-Sensorträger
CN102829895A (zh) * 2012-04-25 2012-12-19 合肥瑞纳表计有限公司 超声波热量表稳流装置
EP2759806A1 (fr) * 2013-01-29 2014-07-30 Itron France Débitmètre à ultrasons
EP2824429A1 (fr) * 2013-07-12 2015-01-14 Gill Corporate Limited Débitmètre à ultrasons
CN111256768A (zh) * 2020-03-31 2020-06-09 成都千嘉科技有限公司 一种超声波流量计

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339631A1 (de) * 1972-08-09 1974-03-07 Saratoga Systems Durchfluss- und schallgeschwindigkeitsmesser und messverfahren
EP0152132A1 (fr) * 1984-01-27 1985-08-21 N.V. Nederlandsche Apparatenfabriek NEDAP Débimètre à ultrasons
EP0202583A1 (fr) * 1985-05-21 1986-11-26 Siemens Aktiengesellschaft Débitmètre
EP0538930A1 (fr) * 1991-10-25 1993-04-28 Schlumberger Industries Dispositif de mesure de la vitesse d'un fluide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339631A1 (de) * 1972-08-09 1974-03-07 Saratoga Systems Durchfluss- und schallgeschwindigkeitsmesser und messverfahren
EP0152132A1 (fr) * 1984-01-27 1985-08-21 N.V. Nederlandsche Apparatenfabriek NEDAP Débimètre à ultrasons
EP0202583A1 (fr) * 1985-05-21 1986-11-26 Siemens Aktiengesellschaft Débitmètre
EP0538930A1 (fr) * 1991-10-25 1993-04-28 Schlumberger Industries Dispositif de mesure de la vitesse d'un fluide

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6390626B2 (en) 1996-10-17 2002-05-21 Duke University Image projection system engine assembly
US6746122B2 (en) 1996-10-17 2004-06-08 Duke University Image projection system engine assembly
US6473236B2 (en) 1998-10-23 2002-10-29 Duke University Projection lens and system
EP1887328A1 (fr) * 2006-08-08 2008-02-13 Siemens VDO Automotive AG Débitmètre à ultrasons monté coaxialement
DE102006037059A1 (de) * 2006-08-08 2008-02-14 Siemens Ag Verfahren zur Luftmassenmessung und Luftmassensensor
DE202008014619U1 (de) * 2008-11-04 2009-12-24 Junker, Raul Ultraschall-Durchflussmesser
DE202009011310U1 (de) * 2009-08-19 2010-09-30 Junker, Raul Ultraschalldurchflussmesser mit Universal-Sensorträger
CN102829895A (zh) * 2012-04-25 2012-12-19 合肥瑞纳表计有限公司 超声波热量表稳流装置
EP2759806A1 (fr) * 2013-01-29 2014-07-30 Itron France Débitmètre à ultrasons
EP3798583A1 (fr) * 2013-01-29 2021-03-31 Itron Global SARL Débitmètre à ultrasons
EP2824429A1 (fr) * 2013-07-12 2015-01-14 Gill Corporate Limited Débitmètre à ultrasons
US9261389B2 (en) 2013-07-12 2016-02-16 Gill Corporate Limited Ultrasonic flowmeter
CN111256768A (zh) * 2020-03-31 2020-06-09 成都千嘉科技有限公司 一种超声波流量计

Also Published As

Publication number Publication date
AU6786396A (en) 1997-04-01

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