DE579050C - Electric display device for flow meter - Google Patents

Electric display device for flow meter

Info

Publication number
DE579050C
DE579050C DEA63578D DEA0063578D DE579050C DE 579050 C DE579050 C DE 579050C DE A63578 D DEA63578 D DE A63578D DE A0063578 D DEA0063578 D DE A0063578D DE 579050 C DE579050 C DE 579050C
Authority
DE
Germany
Prior art keywords
display device
differential pressure
proportional
flow meter
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.)
Expired
Application number
DEA63578D
Other languages
German (de)
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.)
CARL BAMBERG FRIEDENAU
Askania Werke AG
Original Assignee
CARL BAMBERG FRIEDENAU
Askania Werke AG
Publication date
Priority to DEA63578D priority Critical patent/DE579050C/en
Application granted granted Critical
Publication of DE579050C publication Critical patent/DE579050C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05Measuring 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
    • G01F1/34Measuring 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 measuring pressure or differential pressure
    • G01F1/36Measuring 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 measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/38Measuring 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 measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
    • G01F1/383Measuring 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 measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule with electrical or electro-mechanical indication

Landscapes

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

Description

Elektrische Anzeigevorrichtung für Strömungsmengenmesser Die Erfindung betrifft die bekannten elektrischen Anzeigevorrichtungen fürStrömungsmengenmesser, bei denen der Differenzdruckmesser für den der Strömungsmenge quadratisch 'proportionalen Druckabfall an einem Strömungswiderstand eine seinem Ausschlag linear proportionale Änderung eines elektrischen Stromes und - der Strom eine ihm quadratisch proportionale, der Richtkraft des Differenzdruckmessers enfgegengeschaltete Kraft hervorruft. Der elektrische Kompensationsstrom ist dann der Menge der zu messenden Strömung direkt proportional, so daß die Augenblicksmenge der Strömung an. einem gewöhnlichen Strommesser, die - durch die Leitung in einer bestimmten Zeit hindurchgeflossene Gesamtmenge an einem Stromzähler abgelesen werden kann. Die Gegenkraft für die Richtkraft des Differenzdruckmessers wird bei den bekannten Vorrichtungen durch einen Elektromagneten erzeugt, dessen Ankerbewegung der Bewegung des Stellorgans des Differenzdruckmessers entgegenwirkt. Bei Elektromagneten wird die quadratische Abhängigkeit zwischen Anzugskraft.und Erregerstrom aber durch die Bewegung des Ankers gestört. Zur Vermeidung dieses Nachteils wird erfindungsgemäß statt seiner ein sogenannter Topfmagnet mit ringförmigem Spalt verwendet, in dem sich eine ringförmige Spule bewegt, deren Wicklung mit der Wicklung des Magneten in Reihe geschaltet ist.Electric display device for flow meters. The invention relates to the known electrical display devices for flow meters, where the differential pressure meter is proportional to the square of the flow rate Pressure drop across a flow resistance is linearly proportional to its deflection Change of an electric current and - the current is a square proportional to it, causes a force counteracting the straightening force of the differential pressure meter. Of the electrical compensation current is then directly related to the amount of flow to be measured proportional so that the instantaneous amount of flow at. an ordinary ammeter, - the total amount that has flowed through the pipe in a given time can be read on an electricity meter. The counterforce for the straightening force of the Differential pressure meter is in the known devices by an electromagnet generated, the armature movement of the movement of the actuator of the differential pressure meter counteracts. In the case of electromagnets, the quadratic dependency between the attraction force. And Excitation current but disturbed by the movement of the armature. To avoid this disadvantage is instead a so-called pot magnet with an annular gap according to the invention used, in which an annular coil moves, its winding with the winding of the magnet is connected in series.

Die bekannte Schaltung ist in Abb. i dargestellt. während Abb. 2 die Einrichtung nach der Erfindung zeigt. r bezeichnet das Rohr, durch welches das zu messende Gas oder die zu messende Flüssigkeit strömt. Von einem Staurand :2 wird mittels Leitungen 3, q., die in die beiden Kammern 5, 6 einer Membrankapsel 7 münden; der dem Quadrat der augenblicklichen Menge proportionale Differenzdruck abgenommen. '- Die Membran 8 wirkt mittels eines Lenkers 9 auf das Einstellglied ro eines - von einer Batterie i i gespeisten Stromkreises 12. In den Stromkreis ist ein dynamometrisches System 13 eingeschaltet, welches auf den Lenker io in entgegengesetztem Sinne wirkt wie die Membran 8 über den Lenker 9. Das Einstellglied io spielt also unter der entgegengesetzten Wirkung der Membran 8 und des dynamometrischen Systems in eine Gleichgewichtslage ein, bei welcher der auf die Membran 8 wirkende Differenzdruck der Kraftwirkung des dynamometrischen Systems gleich ist. Da die Kraftwirkung des dynamometrischen Systems dem Quadrat der Stromstärke proportional ist, so ist der durch den Kreis 12 fließende Strom stets der durch das Rohr i fließenden augenblicklichen Strömungsmenge proportional. Infolgedessen zeigt ein in den Stromkreis 12 eingeschlossenes Amperemeter 14 die augenblickliche Menge des durch das Rohr i strömenden Mediums an, während ein Elektrizitätszähler 15 fortlaufend die durch. das Rohr i strömende Menge zählt, wobei es natürlich zweckmäßig ist, Amperemeter 1¢ und Zähler 15 nach Mengenwerten zu eichen.The known circuit is shown in Fig. I. while Fig. 2 the Device according to the invention shows. r denotes the pipe through which the to The gas to be measured or the liquid to be measured flows. From a storage edge: 2 will by means of lines 3, q., which open into the two chambers 5, 6 of a membrane capsule 7; the differential pressure proportional to the square of the instantaneous quantity is taken. '- The membrane 8 acts by means of a link 9 on the setting member ro of a - Circuit 12 powered by a battery i i. In the circuit is a dynamometric System 13 switched on, which acts on the handlebar in the opposite sense like the membrane 8 over the handlebars 9. The adjusting member io thus plays under the opposite action of the membrane 8 and the dynamometric system in one A position of equilibrium at which the differential pressure acting on the membrane 8 the force effect of the dynamometric system is equal. Since the force of the dynamometric system is proportional to the square of the current intensity, so is the The current flowing through the circuit 12 is always the instantaneous current flowing through the pipe i Flow rate proportional. As a result, one included in circuit 12 shows Ammeter 14 shows the instantaneous amount of the medium flowing through the pipe i on, while an electricity meter 15 continuously the by. the pipe i flowing Amount counts, although it is of course useful to add ammeter 1 ¢ and counter 15 To calibrate quantity values.

Das neue dynamometrische System besteht, wie in Abb. 2 dargestellt, aus einem Topfmagneten 16 mit ringförmigem Spalt 17. In diesem bewegt sich die ringförmige Spule r8, deren Wicklung hinter die Wicklung 2o des Topfmagneten geschaltet ist. Die Spule 18 trägt mittels eines Bügels 21 den Druckstift 23; welcher auf das Einstellglied ro für den Kompensationsstrom gegen die Wirkung des Lenkers 9 einwirkt.The new dynamometric system consists, as shown in Fig. 2, from a pot magnet 16 with an annular gap 17. The annular gap moves in this Coil r8, the winding of which is connected behind the winding 2o of the pot magnet. The coil 18 carries the pressure pin 23 by means of a bracket 21; which on the adjuster ro acts against the action of the link 9 for the compensation current.

Claims (1)

PATENTANSPRUCH: Anzeigevorrichtung für Strömungsmengenmesser, bei der der Differenzdruckmesser eine seinem Ausschlag linear proportionale Änderung eines elektrischen Stromes und der Strom eine ihm quadratisch proportionale Gegenkraft für den Differenzdruckmesser hervorruft, dadurch gekennzeichnet, daß die Gegenkraft durch eine von dem Strom durchflossene ringförmige Spule (r8) übertragen wird, die sich in dem ringförmigen Spalt (17) eines Topfmagneten (16) bewegt und mit seiner Wicklung in Reihe geschaltet ist: Claim: Display device for flow meters, in which the differential pressure meter produces a change in an electrical current that is linearly proportional to its deflection and the current produces a counterforce proportional to the square of the differential pressure meter, characterized in that the counterforce is transmitted by an annular coil (r8) through which the current flows which moves in the annular gap (17) of a pot magnet (16) and is connected in series with its winding:
DEA63578D Electric display device for flow meter Expired DE579050C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA63578D DE579050C (en) Electric display device for flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA63578D DE579050C (en) Electric display device for flow meter

Publications (1)

Publication Number Publication Date
DE579050C true DE579050C (en) 1933-06-21

Family

ID=6943235

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA63578D Expired DE579050C (en) Electric display device for flow meter

Country Status (1)

Country Link
DE (1) DE579050C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118063B (en) * 1956-02-02 1961-11-23 Schoppe & Faeser Gmbh Quantity measuring device
DE2941192A1 (en) * 1979-10-11 1981-04-23 Amin Dipl.-Ing. Mirahmadi Automatic calibration of baffle plate flowmeter - using sequential compensation current measurement with fixed and moving plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118063B (en) * 1956-02-02 1961-11-23 Schoppe & Faeser Gmbh Quantity measuring device
DE2941192A1 (en) * 1979-10-11 1981-04-23 Amin Dipl.-Ing. Mirahmadi Automatic calibration of baffle plate flowmeter - using sequential compensation current measurement with fixed and moving plate

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