DE705455C - Flow meter with several measuring ranges - Google Patents

Flow meter with several measuring ranges

Info

Publication number
DE705455C
DE705455C DEK142621D DEK0142621D DE705455C DE 705455 C DE705455 C DE 705455C DE K142621 D DEK142621 D DE K142621D DE K0142621 D DEK0142621 D DE K0142621D DE 705455 C DE705455 C DE 705455C
Authority
DE
Germany
Prior art keywords
measuring
throttle
flow meter
measuring ranges
line
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
DEK142621D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEK142621D priority Critical patent/DE705455C/en
Application granted granted Critical
Publication of DE705455C publication Critical patent/DE705455C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F7/00Volume-flow measuring devices with two or more measuring ranges; Compound meters
    • G01F7/005Volume-flow measuring devices with two or more measuring ranges; Compound meters by measuring pressure or differential pressure, created by the use of flow constriction

Landscapes

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

Description

Stromungsmengenniesser mit mehreren Meßbereichen Die vorliegende Erfindung geht von einem Strömungsmeiigenmesser mit mehreren MQeßbereichen aus, bei dem jedem Meßbereich eine besondere Meßdrossel in einer blesonderen, durch ein selbsttätiges Ventil einschaltbaren Leitung zugeordnet ist. Derartige Anordnungen werden benutzt, um leinen möglichst großen Meßbereich erfassen zu können.Flow Meter With Multiple Ranges The present invention is based on a flow meter with several measuring ranges, in which each Measuring range a special measuring throttle in a special one, through an automatic one Valve switchable line is assigned. Such arrangements are used in order to be able to cover the largest possible measuring range.

Bei bekannten Ausführungen befinden sich eine Meßdrossel in der Hauptleitung und die weiteren in außerhalb der Hauptleitung befindlichen Umgehungsleitungen, die durch elektrisch oder von Hand betätigte Ventile an Stelle der Hauptleitung eingeschaltet werden. Insbesondere für die Anordnung einer Mehrzahl von solchen Meßdrosseln wird hierbei die Gesamtanordnung leicht sperrig und umfangreich. Durch die vorliegende Erfindung soll dieser Nachteil vermieden werden und eine möglichst einfache und raumsparende Anordnung für einen solchen Strömungsmesser mit mehreren Meßbereichen erreicht werden. Die Erfindung besteht darin, daß bei dem eingangs erwähnten Strömungsmengenmesser die aus Ventil, Leitung und Drossel bestehenden Meßstellen für den einzelnen Meßbereich in beliebiger Anzahl hintereinander innerhalb der Hauptstromleitung zusätzlich einer Drosselstelle üblicher Art eingebaut sind.In known designs, there is a measuring throttle in the main line and the other bypass lines located outside the main line, those by electrically or manually operated valves in place of the main line be switched on. In particular for the arrangement of a plurality of such Measuring throttles here the overall arrangement is slightly bulky and extensive. By the present invention is intended to avoid this disadvantage and as far as possible simple and space-saving arrangement for such a flow meter with several Measuring ranges can be achieved. The invention consists in that at the beginning mentioned flow meters consisting of valve, line and throttle Measuring points for the individual measuring range in any number one after the other within the main power line is also fitted with a throttle point of the usual type.

Die Erfindung wird dadurch weiter ausgestartet, daß die Ventile über Kontakte elektromagnetisch durch die Differenzdruckmesser für die einzelnen Meßbereiche steuerbar sind. The invention is further started in that the valves have Electromagnetic contacts through the differential pressure meter for the individual measuring ranges are controllable.

In den Abbildungen ist ein Ausführungsbeispiel der Erfindung dargestellt. In the figures, an embodiment of the invention is shown.

Gemäß Abb. 1 ist in die Hauptrohrleitung I eine Meßdrossel 2 üblicher Art eingebaut und durcn die Meßdruckleitungen 3 mit dem Meßgerät 4 verbunden. Um auch die kleinsten Mengen unterhalb der üblichen Io%-Grenze genau zu erfassen, sind weitere Meßdrossheln 5 und 6 mit Rohrleitungen 7 und 8 von kleinerem Querschnitt als die Hauptleitung und mit Ventilen g und IO eingebaut. Durch die Meßdruckleitungen 11 und I2 sind die Meßgeräte 13 und 14 mit den Meßdrosseln 5 und 6 verbunden. Die Ventileg und IO werden über die Kontakte 15 und I6 mittels Elektromagnete 17 und I8, welche an eine Stromquelle 19 oder Netz angeschlossen sind durch die Meßgeräte 4 und I3 gesteuert. Die Hauptstromieitung ist jeweils an der Stelle, wo die Meßdrosseln eingebaut sind, erweitert, damit der ursprüngliche Querschnitt der Hauptstromleitung erhalten bleibt. According to Fig. 1, a measuring throttle 2 is more common in the main pipeline I. Art installed and connected to the measuring device 4 by the measuring pressure lines 3. Around even the smallest amounts below the usual Io% limit are to be recorded precisely further measuring throttles 5 and 6 with pipes 7 and 8 of smaller cross-section installed as the main line and with valves g and IO. Through the measuring pressure lines 11 and I2, the measuring devices 13 and 14 are connected to the measuring throttles 5 and 6. the Ventileg and IO are via the contacts 15 and I6 by means of electromagnets 17 and I8 connected to a power source 19 or mains through the meters 4 and I3 controlled. The main power line is in each case at the point where the measuring throttles are built in, expanded so that the original cross-section of the main power line preserved.

Die Wirkungsweise ist folgende: Wird die durchfließende Menge kleiner, als der Meßbereich des Meßgerätes 4 erfassen kann, so hat der Zeiger seinen Nullpunkt erreicht, und der Kontakt 15 am Meß gerät 4 wird geschlossen, wobei das Ventil 9 durch den Magnet 17 geöffnet wird, wie Abb. 2 zeigt, und die durchfließende Menge gezwungen wird, durch die Meßdrossel 5 zu gehen und dabei von dem Meßgerät 13 erfaßt wird. Wird nun die Menge noch geringer, als der Meßbereich des Meßgerätes 13 erfassen kann, so hat der Zeiger seinen Nullpunkt erreicht, und der Kontakt 16 am meßgerät 13 wird geschlossen, wobei das Ventil 10 durch den Magnet IS geöffnet wird, wie vor in Abb. 2, und damit die durchflie-Bende Menge gezwungen wird, durch die Meßdrossel 6 zu gehen, und vom Meßgerät 1 4 erfaßt wird. The mode of action is as follows: If the amount flowing through becomes smaller, as the measuring range of the measuring device 4 can, so has the pointer reaches its zero point, and the contact 15 on the measuring device 4 is closed, wherein the valve 9 is opened by the magnet 17, as Fig. 2 shows, and the flowing through Amount is forced to go through the measuring throttle 5 and thereby by the measuring device 13 is detected. Now the amount becomes even smaller than the measuring range of the measuring device 13 can detect, the pointer has reached its zero point, and the contact 16 the measuring device 13 is closed, the valve 10 being opened by the magnet IS is, as before in Fig. 2, and thus the amount flowing through is forced through the measuring throttle 6 to go, and is detected by the measuring device 1 4.

Die Schließung und Öffnung der Ventile 9 und 10 durch die Meßgeräte 4 und 13 geschiebt derart, daß immer nur eine Meßdrossel eingeschaltet ist und damit ein doppeltes Anzeigen oder Zählen der Meßgerfite usgescblossen ist. The closing and opening of the valves 9 and 10 by the measuring devices 4 and 13 pushed in such a way that only one measuring throttle is switched on and thus a double display or counting of the measuring devices is excluded.

Werden die Meßdrosseln beispielsweise so bemessen, daß ihr jeweiliger Meßbereich I:IO beträgt, so erhält man mit allen drei Meßgeräten nach Abb. 1 einen Gesamtbereich von 1 : 1000. If the measuring throttles are dimensioned, for example, so that their respective Measuring range I: IO is, you will get one with all three measuring devices according to Fig. 1 Total range of 1: 1000.

Claims (2)

PATENTANSPRÜCHE: I. Strömungsmengenmesser mit mehreren Meßbereichen, bei dem jedem Meßbereich eine besondere Meßdrossel in einer besonderen, durch ein selbsttätiges Ventil einschaltbaren Leitung zugeordnet ist, dadurch gekennzeichnet, daß die aus Ventil, Leitung und Drossel bestehenden Meßstellen für den einzelnen Meßbereich in beliebiger Anzahl hintereinander innerhalb der Hauptstromleitung zusätzlich einer Drosselstelle üblicher Art eingebaut sind. PATENT CLAIMS: I. Flow meter with several measuring ranges, in which each measuring range has a special measuring throttle in a special, through a automatic valve is assigned to a switchable line, characterized in that that the measuring points consisting of valve, line and throttle for the individual Additional measuring range in any number one after the other within the main power line a throttle point of the usual type are installed. 2. Vorrichtung nach Anspruchs, dadurch gekennzeichnet, daß die Ventile über Kontakte elektromagnetisch durch die Differenzdruckmesser für die einzelnen Meßbereiche steuerbar sind. 2. Apparatus according to claim, characterized in that the valves Electromagnetic via contacts through the differential pressure meter for the individual Measuring ranges are controllable.
DEK142621D 1936-06-20 1936-06-20 Flow meter with several measuring ranges Expired DE705455C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK142621D DE705455C (en) 1936-06-20 1936-06-20 Flow meter with several measuring ranges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK142621D DE705455C (en) 1936-06-20 1936-06-20 Flow meter with several measuring ranges

Publications (1)

Publication Number Publication Date
DE705455C true DE705455C (en) 1941-04-29

Family

ID=7250226

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK142621D Expired DE705455C (en) 1936-06-20 1936-06-20 Flow meter with several measuring ranges

Country Status (1)

Country Link
DE (1) DE705455C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648059B1 (en) * 1966-04-15 1971-12-30 New York Air Brake Co FLOW MEASURING DEVICE WITH A WIDE MEASURING RANGE
WO1998010250A1 (en) * 1996-09-06 1998-03-12 Framo Engineering As Fluid flow measurement device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648059B1 (en) * 1966-04-15 1971-12-30 New York Air Brake Co FLOW MEASURING DEVICE WITH A WIDE MEASURING RANGE
WO1998010250A1 (en) * 1996-09-06 1998-03-12 Framo Engineering As Fluid flow measurement device
AU713447B2 (en) * 1996-09-06 1999-12-02 Framo Engineering As Fluid flow measurement device
US6339963B1 (en) 1996-09-06 2002-01-22 Framo Engineering As Fluid flow measurement device

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