DE429888C - Flow meter with partial flow measurement - Google Patents

Flow meter with partial flow measurement

Info

Publication number
DE429888C
DE429888C DEA46125D DEA0046125D DE429888C DE 429888 C DE429888 C DE 429888C DE A46125 D DEA46125 D DE A46125D DE A0046125 D DEA0046125 D DE A0046125D DE 429888 C DE429888 C DE 429888C
Authority
DE
Germany
Prior art keywords
membrane
flow
steam
housing
partial
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
DEA46125D
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
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 CARL BAMBERG FRIEDENAU, Askania Werke AG filed Critical CARL BAMBERG FRIEDENAU
Priority to DEA46125D priority Critical patent/DE429888C/en
Application granted granted Critical
Publication of DE429888C publication Critical patent/DE429888C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F5/00Measuring a proportion of the volume flow
    • G01F5/005Measuring a proportion of the volume flow by measuring pressure or differential pressure, created by the use of flow constriction

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Description

Strömungsmesser mit Teilstrommessung. Die Erfindung betrifft den bekannten Strömungsmesser, bei dem ein von der Hauptleitung abgezweigter Teilstrom mittels eines durch eine Membran eingestellten Regelventils dadurch proportional zum Hauptstrom gemacht wird, daB das Verhältnis des Differenzdruckes an der Hauptdrossel zum Differenzdruck an einer in der Teilleitung liegenden Nebendrossel konstant gehalten wird. Die vorliegende Erfindung bezweckt nuil, eine solche Vorrichtung insbesondere zum Messen von Dämpfen oder heißen Gasen dadurch gut verwendbar zu machen, daß die Membran nebst ihrem Gehäuse in einen besonderen Heizmantel eingeschlossen wird, welcher mit dem zu messenden Gas oder Dampf geheizt wird.Flow meter with partial flow measurement. The invention relates to the known Flow meter in which a partial flow branched off from the main line by means of a control valve adjusted by a diaphragm is proportional to the main flow it is made that the ratio of the differential pressure at the main throttle to the differential pressure is kept constant at a secondary throttle located in the sub-line. The present Invention nuil aims at such a device in particular for measuring vapors or to make hot gases usable by the fact that the membrane together with its Housing is enclosed in a special heating jacket, which with the to be measured Gas or steam is heated.

Die Zeichnung zeigt eine beispielsweise Ausführungsform der Erfindung.The drawing shows an exemplary embodiment of the invention.

In der Zeichnung sind c und d die beiden von der Hauptleitung kommenden Rohre, welche vor zünd hinter dem Staurand in der Hauptleitung abgezweigt sind. Sie führen also Dampf von einer etwas voneinander abweichenden Spannung. Das Rohr c mündet in eine Kammer f, in der sich das die Membran i tragende Gehäuse e befindet. Durch die Membran i wird das Gehäuse e in zwei Kammern s und t geteilt. Die Kammer s steht durch den Stutzen cl mit dem Inneren. des Raumes f, also auch mit der Leitung c in Verbindung, und zwar enthält der Stutzen cl den die Nebendrossel bildenden Staurand r, während die Leitung cl unmittelbar mit der Kammer t in Verbindung steht, 1n die Leitung d können ebenfalls Stauränder eingesetzt sein. Die Membran i trägt das Nadelventil n, welches in dem Sitz h hin und her bewegt werden kann. Zwischen dem Raum f und der Leitung d ist an der mit k bezeichneten Stelle eine Undichtheit vorhanden, so daß immer eine sehr geringe Dampfnieiige aus dem Raum f in die Leitung d, die ja unter geringerer Spannung steht, abfließen kann.In the drawing, c and d are the two pipes coming from the main line, which are branched off before ignition behind the edge of the reservoir in the main line. So they carry steam with a slightly different voltage. The tube c opens into a chamber f in which the housing e carrying the membrane i is located. The housing e is divided into two chambers s and t by the membrane i. The chamber s is connected to the interior through the nozzle cl. of the space f, so also with the line c in connection, namely the nozzle cl contains the retaining edge r forming the secondary throttle, while the line cl is directly connected to the chamber t, 1n the line d, retaining edges can also be used. The membrane i carries the needle valve n, which can be moved back and forth in the seat h. Between the space f and the line d there is a leak at the point marked k, so that a very small amount of vapor can always flow from the space f into the line d, which is under less tension.

Die Einrichtung hat soweit, nie bisher beschrieben, den Zweck, das ganze Gehäuse e außen unter der gleichen Spannung und auch unter der gleichen Temperatur zu halten als die innerhalb des Gehäuses herrschende. Durch den Druckausgleich ist es möglich, das Gehäuse aus verhältnismäßig schwachem Mateiy.al zu wählen, ihm dadurch eine gute Wärmeleitungsfähigkeit zu geben, so daß auch tatsächlich der in die Räume s und t eindrin.-gende Dampf die gleiche Temperatur hat wie der Dampf in der Hauptleitung und keine Kondensation in diesen Kammern vorgeht.The facility has so far, never been described before, the purpose that whole housings outside under the same voltage and also under the same temperature to keep than that prevailing within the housing. Due to the pressure equalization is it possible to choose the case from relatively weak mateiy.al, thereby it to give a good thermal conductivity, so that actually in the rooms s and t penetrating steam has the same temperature as the steam in the main line and no condensation is going on in these chambers.

Claims (1)

PATENTANSPRÜCHE: z. Strömungsmesser mit Teilstrommessung mittels eines durch eine Membran eingestellten Regelventils, insbesondere für heiße Gase und Dämpfe, dadurch gekennzeichnet, daß das Gehäuse mit der Membran von einem Heizmantel umgeben ist, welcher mit dein zu messenden Gas oder Dampf geheizt wird. v. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß der Dampfmantel mit dem Gas oder dem Dampf des höheren Druckes der zu messenden Druckdifferenz verbunden ist und durch eine feine, die Druckdifferenz wenig beeinflussende Undichtheit mit der den niedrigeren Druck führenden Leitung in Verbindung sieht, um durch eine dauernde Strömung eine Kondensation zu verhindern. 3. Vorrichtung nach Anspruch i und a, dadurch gekennzeichnet, daß das die Membran (i) enthaltene Gehäuse (e) aus verhältnismäßig dünnem Metall gebildet ist. PATENT CLAIMS: e.g. Flow meter with partial flow measurement by means of a control valve set by a membrane, in particular for hot gases and vapors, characterized in that the housing with the membrane is surrounded by a heating jacket which is heated with the gas or steam to be measured. v. Device according to claim i, characterized in that the steam jacket is connected to the gas or the steam of the higher pressure of the pressure difference to be measured and is connected to the line carrying the lower pressure through a fine leak which has little influence on the pressure difference in order to be connected by a constant flow to prevent condensation. 3. Apparatus according to claim i and a, characterized in that the housing (e) containing the membrane (i) is formed from relatively thin metal.
DEA46125D 1923-04-01 1923-04-01 Flow meter with partial flow measurement Expired DE429888C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA46125D DE429888C (en) 1923-04-01 1923-04-01 Flow meter with partial flow measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA46125D DE429888C (en) 1923-04-01 1923-04-01 Flow meter with partial flow measurement

Publications (1)

Publication Number Publication Date
DE429888C true DE429888C (en) 1926-06-03

Family

ID=6935093

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA46125D Expired DE429888C (en) 1923-04-01 1923-04-01 Flow meter with partial flow measurement

Country Status (1)

Country Link
DE (1) DE429888C (en)

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