DE4228977A1 - Throughflow measurement in mains pipe - using acoustic properties of pipes such as Doppler effect and sound wave expansion to obtain data concerning throughflow - Google Patents

Throughflow measurement in mains pipe - using acoustic properties of pipes such as Doppler effect and sound wave expansion to obtain data concerning throughflow

Info

Publication number
DE4228977A1
DE4228977A1 DE19924228977 DE4228977A DE4228977A1 DE 4228977 A1 DE4228977 A1 DE 4228977A1 DE 19924228977 DE19924228977 DE 19924228977 DE 4228977 A DE4228977 A DE 4228977A DE 4228977 A1 DE4228977 A1 DE 4228977A1
Authority
DE
Germany
Prior art keywords
throughflow
pipes
doppler effect
sound wave
obtain data
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
DE19924228977
Other languages
German (de)
Inventor
Josef Dr Poeppel
Lorenz Kreitmayr
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.)
Remos Entwicklung und Pro GmbH
Original Assignee
Remos Entwicklung und Pro 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 Remos Entwicklung und Pro GmbH filed Critical Remos Entwicklung und Pro GmbH
Priority to DE19924228977 priority Critical patent/DE4228977A1/en
Publication of DE4228977A1 publication Critical patent/DE4228977A1/en
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
    • G01F1/66—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
    • G01F1/663—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 by measuring Doppler frequency shift
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Electro-acoustic transmitter and receiver units are fitted from the outside onto a section of pipe and the diffusion of sound via the conduit is evaluated. From the geometrical data, the physical parameters and the received acoustic signal, the flow speed in the pipe is determined. Alternatively, from the frequency shift between the transmitter and receiver frequency and the geometrical and physical data, the flow speed can be calculated. USE/ADVANTAGE - Flow measurement without opening mains pipe conduit.

Description

1. Stand der Technik:1. State of the art:

Die üblichen Meßmethoden zur Strömungsmessung in Rohrleitungen benutzen z. B. Flügelräder, deren Drehzahl erfaßt wird, hydrodynamische Prinzipien, Wärme­ abtransportmethoden oder den akustischen Dopplereffekt. Alle diese Verfahren sind dadurch gekennzeichnet, daß der Meßsensor Bestandteil der Rohrleitung ist. Bei nachträglichem Einbau der Meßsensoren muß daher das Leitungssystem geöffnet werden.The usual measuring methods for flow measurement in pipelines use z. B. Impellers, the speed of which is recorded, hydrodynamic principles, heat removal methods or the acoustic Doppler effect. All of these procedures are characterized in that the measuring sensor is part of the pipeline. At subsequent installation of the measuring sensors must therefore open the line system become.

EP 481691, EP 475100, DE 37 20 668, EP 139285, EP 138017, DE 31 47 197, DE 31 21 778.EP 481691, EP 475100, DE 37 20 668, EP 139285, EP 138017, DE 31 47 197, DE 31 21 778.

2. Zielsetzung der Erfindung:2. Objective of the invention:

Die Zielsetzung der Erfindung ist es, eine Strömungsmeßkomponente zu schaffen, die ohne Öffnung des Rohrleitungsnetzes adaptiert werden kann.The object of the invention is to provide a flow measuring component which can be adapted without opening the pipeline network.

3. Beschreibung der Erfindung:3. Description of the invention:

Die Erfindung nutzt die Schallausbreitung in leitungsgeführten Medien sowie den damit verbundenen akustischen Dopplereffekt, um die Strömungsgeschwindigkeit zu erfassen.The invention uses sound propagation in line-guided media as well as the associated acoustic Doppler effect to increase the flow velocity to capture.

Eine einfache Ausführungsform der Erfindung zeigt Fig. 1. An ein Leitungsstück ist eine Sendereinheit (S) angebracht, bestehend aus zwei oder mehr elektroakustischen Wandlern sowie einer oder mehreren Empfängereinheiten (E1, E2), welche die ausgesendeten akustischen Wellen empfangen. Um eine hohe Empfindlichkeit zu erreichen, werden die Sendesignale der Sendewandler gegeneinander phasenverschoben, so daß eine resultierende Welle mit hoher Ausbreitungskomponente in Richtung der Strömung erfolgt. Aus den geometrischen Abständen, den physikalischen Eigenschaften der Medien sowie der Frequenzverschiebung zwischen Sende- und Empfangsfrequenz kann die Strömungsgeschwindigkeit errechnet werden.A simple embodiment of the invention is shown in FIG. 1. A transmitter unit (S) is attached to a line section, consisting of two or more electroacoustic transducers and one or more receiver units (E1, E2) which receive the emitted acoustic waves. In order to achieve high sensitivity, the transmission signals of the transmission converters are phase-shifted with respect to one another, so that a resulting wave with a high propagation component occurs in the direction of the flow. The flow velocity can be calculated from the geometric distances, the physical properties of the media and the frequency shift between the transmission and reception frequency.

Claims (2)

1. Verfahren zur Messung der Strömungsgeschwindigkeit bzw. des Durchflusses, dadurch gekennzeichnet, daß eine und/oder mehrere elektroakustische Sende- und/oder Empfangseinheiten von außen an ein Rohrleitungsstück angebracht sind und die Ausbreitung des Schalls über die Leitung ausnützt. Aus den Geometriedaten, den physikalischen Parametern sowie dem empfangenen akustischen Signal läßt sich die Strömungsgeschwindigkeit in der Rohrleitung ermitteln.1. A method for measuring the flow rate or the flow rate, characterized in that one and / or more electro-acoustic transmitter and / or receiver units are attached to a pipe section from the outside and exploits the propagation of the sound via the line. The flow velocity in the pipeline can be determined from the geometry data, the physical parameters and the received acoustic signal. 2. Verfahren zur Messung der Strömungsgeschwindigkeit bzw. des Durchflusses, dadurch gekennzeichnet, daß eine elektroakustische Sendeeinheit (S) bestehend aus 2 oder mehreren Wandlern gegeneinander phasenverschoben akustische Signale zu einer oder mehreren Empfangseinheiten (E1, E2) sendet und Sende- und/oder Empfangseinheiten extern an ein Leitungsstück angebracht sind. Aus der Frequenzverschiebung zwischen Sende- und Empfangsfrequenz sowie den Geometrie- und physikalischen Daten kann dadurch die Strömungsgeschwindigkeit errechnet werden.2. Method for measuring the flow velocity or the flow, characterized in that an electro-acoustic transmitter unit (S) consisting of 2 or more transducers acoustic signals phase-shifted with respect to one another Receiving units (E1, E2) sends and transmitting and / or receiving units externally to a line piece are attached. From the frequency shift between transmit and Reception frequency as well as the geometrical and physical data can thereby Flow rate can be calculated.
DE19924228977 1992-08-31 1992-08-31 Throughflow measurement in mains pipe - using acoustic properties of pipes such as Doppler effect and sound wave expansion to obtain data concerning throughflow Ceased DE4228977A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924228977 DE4228977A1 (en) 1992-08-31 1992-08-31 Throughflow measurement in mains pipe - using acoustic properties of pipes such as Doppler effect and sound wave expansion to obtain data concerning throughflow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924228977 DE4228977A1 (en) 1992-08-31 1992-08-31 Throughflow measurement in mains pipe - using acoustic properties of pipes such as Doppler effect and sound wave expansion to obtain data concerning throughflow

Publications (1)

Publication Number Publication Date
DE4228977A1 true DE4228977A1 (en) 1994-03-03

Family

ID=6466860

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924228977 Ceased DE4228977A1 (en) 1992-08-31 1992-08-31 Throughflow measurement in mains pipe - using acoustic properties of pipes such as Doppler effect and sound wave expansion to obtain data concerning throughflow

Country Status (1)

Country Link
DE (1) DE4228977A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10161770B2 (en) 2016-06-30 2018-12-25 Ott Hydromet Gmbh Flow meter with adaptable beam characteristics
US10295385B2 (en) 2016-06-30 2019-05-21 Hach Company Flow meter with adaptable beam characteristics
US10408648B2 (en) 2016-06-30 2019-09-10 Hach Company Flow meter with adaptable beam characteristics

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062237A (en) * 1976-05-07 1977-12-13 Fox Martin D Crossed beam ultrasonic flowmeter
DE3121778A1 (en) * 1980-05-23 1982-05-19 Fuji Electric Co., Ltd., Kawasaki, Kanagawa Ultrasonic flow meter
DE3149933A1 (en) * 1980-12-16 1982-07-15 Micro Pure Systems, Inc., Smithfield, R.I. SOUND PULSE ECHOGER
DE3147197A1 (en) * 1981-11-27 1983-06-09 Siemens AG, 1000 Berlin und 8000 München METHOD AND DEVICE FOR CARRYING OUT FLOW MEASURES ON FLOWING MEDIA BY THE ULTRASONIC DOPPLER METHOD
EP0138017A1 (en) * 1983-09-15 1985-04-24 Siemens Aktiengesellschaft Method for ultrasonic Doppler fluid flow measurement with improved spatial resolution
EP0139285A2 (en) * 1983-10-20 1985-05-02 General Electric Company Transducer array for sector scan and doppler flow measurement applications
DE3809189A1 (en) * 1987-03-20 1988-09-29 Noriyoshi Chubachi Method and device for the measurement of flow velocity using ultrasonic waves
DE3720668A1 (en) * 1987-06-23 1989-01-05 Schael Wilfried Flow meter for blood
EP0475100A1 (en) * 1990-08-20 1992-03-18 Matsushita Electric Industrial Co., Ltd. Ultrasonic doppler blood flowmeter
EP0481691A1 (en) * 1990-10-12 1992-04-22 Advanced Technology Laboratories, Inc. Ultrasonic doppler flow measurement system with tissue motion discrimination

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062237A (en) * 1976-05-07 1977-12-13 Fox Martin D Crossed beam ultrasonic flowmeter
DE3121778A1 (en) * 1980-05-23 1982-05-19 Fuji Electric Co., Ltd., Kawasaki, Kanagawa Ultrasonic flow meter
DE3149933A1 (en) * 1980-12-16 1982-07-15 Micro Pure Systems, Inc., Smithfield, R.I. SOUND PULSE ECHOGER
DE3147197A1 (en) * 1981-11-27 1983-06-09 Siemens AG, 1000 Berlin und 8000 München METHOD AND DEVICE FOR CARRYING OUT FLOW MEASURES ON FLOWING MEDIA BY THE ULTRASONIC DOPPLER METHOD
EP0138017A1 (en) * 1983-09-15 1985-04-24 Siemens Aktiengesellschaft Method for ultrasonic Doppler fluid flow measurement with improved spatial resolution
EP0139285A2 (en) * 1983-10-20 1985-05-02 General Electric Company Transducer array for sector scan and doppler flow measurement applications
DE3809189A1 (en) * 1987-03-20 1988-09-29 Noriyoshi Chubachi Method and device for the measurement of flow velocity using ultrasonic waves
DE3720668A1 (en) * 1987-06-23 1989-01-05 Schael Wilfried Flow meter for blood
EP0475100A1 (en) * 1990-08-20 1992-03-18 Matsushita Electric Industrial Co., Ltd. Ultrasonic doppler blood flowmeter
EP0481691A1 (en) * 1990-10-12 1992-04-22 Advanced Technology Laboratories, Inc. Ultrasonic doppler flow measurement system with tissue motion discrimination

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10161770B2 (en) 2016-06-30 2018-12-25 Ott Hydromet Gmbh Flow meter with adaptable beam characteristics
US10295385B2 (en) 2016-06-30 2019-05-21 Hach Company Flow meter with adaptable beam characteristics
US10408648B2 (en) 2016-06-30 2019-09-10 Hach Company Flow meter with adaptable beam characteristics

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OP8 Request for examination as to paragraph 44 patent law
8122 Nonbinding interest in granting licenses declared
8131 Rejection