FR2424520A1 - Appareil de controle de debit de fluide - Google Patents

Appareil de controle de debit de fluide

Info

Publication number
FR2424520A1
FR2424520A1 FR7910495A FR7910495A FR2424520A1 FR 2424520 A1 FR2424520 A1 FR 2424520A1 FR 7910495 A FR7910495 A FR 7910495A FR 7910495 A FR7910495 A FR 7910495A FR 2424520 A1 FR2424520 A1 FR 2424520A1
Authority
FR
France
Prior art keywords
control unit
fluid flow
flow control
formation
fluid current
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
FR7910495A
Other languages
English (en)
Other versions
FR2424520B1 (fr
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Publication of FR2424520A1 publication Critical patent/FR2424520A1/fr
Application granted granted Critical
Publication of FR2424520B1 publication Critical patent/FR2424520B1/fr
Granted 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
    • G01F1/05—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 using mechanical effects
    • G01F1/20—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 using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—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 using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3282—Means for detecting quantities used as proxy variables for swirl for detecting variations in infrasonic, sonic or ultrasonic waves, due to modulation by passing through the swirling 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
    • G01F1/05—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 using mechanical effects
    • G01F1/20—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 using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—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 using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Telephonic Communication Services (AREA)
  • Amplifiers (AREA)

Abstract

L'INVENTION CONCERNE UN APPAREIL DE CONTROLE DE COURANT DE FLUIDE DU TYPE QUI DETECTE LA VITESSE DE FORMATION DE TOURBILLONS PAR UN OBSTACLE ARRONDI PLACE DANS LE COURANT DE FLUIDE. L'APPAREIL RESOUT LE PROBLEME POSE PAR LA FORMATION DE SIGNAUX ELECTRIQUES PARASITES QUI NE SONT PAS DUS A DES TOURBILLONS, PAR UTILISATION D'UN AMPLIFICATEUR 20 QUI AMPLIFIE LES FREQUENCES CHOISIES PAR UN DISPOSITIF 23 DE COMPARAISON, CE DERNIER ETANT COMMANDE PAR LA VALEUR D'UN SIGNAL SUPPLEMENTAIRE QUI EST PROPORTIONNEL AU NOMBRE DE TOURBILLONS DETECTES. APPLICATION AU CONTROLE DES COURANTS D'AIR DANS LES MINES SOUTERRAINES.
FR7910495A 1978-04-26 1979-04-25 Appareil de controle de debit de fluide Granted FR2424520A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1647378 1978-04-26

Publications (2)

Publication Number Publication Date
FR2424520A1 true FR2424520A1 (fr) 1979-11-23
FR2424520B1 FR2424520B1 (fr) 1984-01-13

Family

ID=10077981

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7910495A Granted FR2424520A1 (fr) 1978-04-26 1979-04-25 Appareil de controle de debit de fluide

Country Status (8)

Country Link
US (1) US4318303A (fr)
AU (1) AU519465B2 (fr)
BE (1) BE875824A (fr)
CA (1) CA1135396A (fr)
DE (1) DE2915924A1 (fr)
FR (1) FR2424520A1 (fr)
GB (1) GB2020022B (fr)
ZA (1) ZA791976B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021897C3 (de) * 1980-06-06 1986-07-31 Auergesellschaft Gmbh, 1000 Berlin Elektronische Schaltungsanordnung für eine Meßwertaufbereitung einer durch eine Karmansche Wirbelstraße hervorgerufenen Wirbelfolge
US4375768A (en) * 1981-06-17 1983-03-08 Auergesellschaft Gmbh Electronic circuit for processing the measured values from a vortex sequence produced by a Karman vortex path
GB2116701B (en) * 1982-03-02 1985-09-25 Itt Ind Ltd Fluid flowmeter
GB2120384A (en) * 1982-05-19 1983-11-30 Bestobell Fluid flow meter
US4567776A (en) * 1982-06-30 1986-02-04 Kubota Trane Ltd. Fluid flowmeter of Karman vortex detecting type
KR920010913B1 (ko) * 1988-04-19 1992-12-24 미쓰비시전기 주식회사 와 유량계
JPH0654245B2 (ja) * 1988-04-19 1994-07-20 三菱電機株式会社 渦流量計
US5728947A (en) * 1996-06-12 1998-03-17 Asahi/America, Inc. Ultrasonic vortex flowmeter having clamp-on housing
US7134321B2 (en) 2004-07-20 2006-11-14 Asml Holding N.V. Fluid gauge proximity sensor and method of operating same using a modulated fluid flow
US8464596B1 (en) * 2011-09-19 2013-06-18 Onicon, Inc. Vortex flow meter with gain control
CN103557031B (zh) * 2013-11-22 2015-11-04 中煤科工集团重庆研究院有限公司 矿井声发射实时自动监测仪
CN105317462A (zh) * 2015-11-13 2016-02-10 苏州扬佛自动化设备有限公司 一种具有写保护功能的煤矿安全监测系统
CN106640198A (zh) * 2016-12-28 2017-05-10 河南工业和信息化职业学院 一种煤矿井下巷道通风报警装置
US11460330B2 (en) 2020-07-06 2022-10-04 Saudi Arabian Oil Company Reducing noise in a vortex flow meter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204200A1 (de) * 1971-02-02 1972-08-17 Fischer & Porter Gmbh Signalaufbereiter für aus Nutz- und Störsignalen unterschiedlicher Frequenz zusammengesetzte Meßsignale, insbesondere die an einem Fühler abgenommenen, vgn der Durchflußgeschwindigkeit abhängigen Meßsignale eines Wirbeldurchflußmessers, mit Frequenzfiltern und Verstärkern zur Trennung von Nutz- und Störsignalen und Unterdrückung der Störsignale
US4083241A (en) * 1977-02-14 1978-04-11 Fischer & Porter Co. Multi-channel common-line flowmeter transmission system
FR2384238A1 (fr) * 1977-03-18 1978-10-13 Schlumberger Compteurs Circuit electronique pour le traitement de signaux de capteurs debitmetriques
GB1569125A (en) * 1976-02-19 1980-06-11 Ici Ltd Vortex detection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887878A (en) * 1952-05-02 1959-05-26 Foxboro Co Amplifier for an induction flow meter
US3362221A (en) * 1964-06-30 1968-01-09 Hays Corp Magnetic flow transmitter system
US3864972A (en) * 1973-03-12 1975-02-11 Fischer & Porter Co Signal recovery system for vortex type flowmeter
US3995482A (en) * 1973-03-30 1976-12-07 Chrysler Corporation Vortex swirl flowmeter sensor circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204200A1 (de) * 1971-02-02 1972-08-17 Fischer & Porter Gmbh Signalaufbereiter für aus Nutz- und Störsignalen unterschiedlicher Frequenz zusammengesetzte Meßsignale, insbesondere die an einem Fühler abgenommenen, vgn der Durchflußgeschwindigkeit abhängigen Meßsignale eines Wirbeldurchflußmessers, mit Frequenzfiltern und Verstärkern zur Trennung von Nutz- und Störsignalen und Unterdrückung der Störsignale
US3709034A (en) * 1971-02-02 1973-01-09 Fischer & Porter Co Signal conditioner for recovering dominant signals from swirl-type meters
GB1569125A (en) * 1976-02-19 1980-06-11 Ici Ltd Vortex detection
US4083241A (en) * 1977-02-14 1978-04-11 Fischer & Porter Co. Multi-channel common-line flowmeter transmission system
FR2384238A1 (fr) * 1977-03-18 1978-10-13 Schlumberger Compteurs Circuit electronique pour le traitement de signaux de capteurs debitmetriques

Also Published As

Publication number Publication date
GB2020022A (en) 1979-11-07
FR2424520B1 (fr) 1984-01-13
AU4643579A (en) 1979-11-01
GB2020022B (en) 1982-09-22
AU519465B2 (en) 1981-12-03
DE2915924C2 (fr) 1990-02-22
US4318303A (en) 1982-03-09
CA1135396A (fr) 1982-11-09
DE2915924A1 (de) 1979-11-08
ZA791976B (en) 1980-05-28
BE875824A (fr) 1979-10-24

Similar Documents

Publication Publication Date Title
FR2424520A1 (fr) Appareil de controle de debit de fluide
FR2456702A1 (fr) Grue comportant un dispositif de traitement de donnees pour le calcul de conditions de travail
FR2366783A1 (fr) Dispositif de commande automatique de semoir de graines
FR2392728A1 (fr) Appareil et procede de commande de pulverisation a distance
FR2439981A1 (fr) Procede et dispositif de compensation de la vitesse du son pour debitmetre doppler
FR2427563A1 (fr) Appareil de commande de degivrage pour systeme de conditionnement de la temperature
FR2383475A1 (fr) Stabilisateur d'helicoptere a incidence variable, et dispositif de manoeuvre a l'epreuve des defaillances
US2783459A (en) Alarm system for swimming pools
FR2410560A1 (fr) Systeme d'alarme pour machines a imprimer
FR2432410A1 (fr) Installation de detection de patinage pour vehicule
FR2458124A1 (fr) Appareillage pour enregistrer un signal d'information sur un support d'enregistrement au moyen d'un dispositif d'enregistrement et comportant des moyens de commande de gain
FR2404208A1 (fr) Indicateur de niveau-limite a ultrasons
FR2425965A1 (fr) Systeme de regulation antiblocage
FR1077009A (fr) Dispositif de contrôle au moyen d'ultra-sons
FR2421368A1 (fr) Appareil d'affichage numerique
FR2379182A1 (fr) Circuit de relais de protection
FR2356142A1 (fr) Dispositif de mesure de vitesse d'ecoulement
FR2341133A1 (fr) Dispositif pour fournir un signal de debit massique avec ou sans signal de densite
FR2450443A1 (fr) Dispositif de controle, d'indication et d'avertissement d'altitude de securite minimale
FR2426245A1 (fr) Dispositif de mesure a ultrasons
FR2430129A1 (fr) Systeme de commande d'excitation d'un moteur a courant continu
US2390739A (en) System and apparatus for measuring cloud height and thickness
CH441817A (fr) Dispositif électronique pour la détection d'un fluide comprenant un circuit oscillant permettant de commander un relais
FR2441991A1 (fr) Generateur radiologique pour appareil de radiodiagnostic comportant un dispositif de mesure pour le courant du tube a rayons x
CH426991A (fr) Dispositif pour déplacer un organe entraîné conformément au fonctionnement d'un appareil de commande d'entrée

Legal Events

Date Code Title Description
ST Notification of lapse