DE847208C - Flow loss pressure meter - Google Patents

Flow loss pressure meter

Info

Publication number
DE847208C
DE847208C DE1951P0005059 DEP0005059D DE847208C DE 847208 C DE847208 C DE 847208C DE 1951P0005059 DE1951P0005059 DE 1951P0005059 DE P0005059 D DEP0005059 D DE P0005059D DE 847208 C DE847208 C DE 847208C
Authority
DE
Germany
Prior art keywords
membrane
differential pressure
electrical
liters per
flow
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
DE1951P0005059
Other languages
German (de)
Inventor
Bernhard Dipl-Ing Plewka
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.)
Dipl-Ing Bernhard Plewka Bremen
Original Assignee
Dipl-Ing Bernhard Plewka Bremen
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 Dipl-Ing Bernhard Plewka Bremen filed Critical Dipl-Ing Bernhard Plewka Bremen
Priority to DE1951P0005059 priority Critical patent/DE847208C/en
Application granted granted Critical
Publication of DE847208C publication Critical patent/DE847208C/en
Expired 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
    • G01F1/34—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 measuring pressure or differential pressure
    • G01F1/36—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 measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/38—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 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
    • G01F1/383—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 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

Zur Messung kleiner Durchflußmengen sind Flüssigkeitsmesser bekannt, die für die Messung die Spiegelschwankung zweier durch eine Düse verbundener kommunizierender Röhren als NIaß benutzen, wobei der Spiegel des Meßgefäßes im Zulauf durch einen Schwimmer konstant gehalten wird. Liquid meters are known for measuring small flow rates, that for the measurement of the mirror fluctuation of two communicating ones connected by a nozzle Use tubes as NIaß, whereby the level of the measuring vessel in the inlet through a Float is kept constant.

Die im folgenden beschriebene Erfindung stellt eine Lösung der Aufgabe dar, mit einfachsten mechanischen Mitteln den Differenzdruck, der sich bei Durchfluß an einem Strömungswiderstand einstellt, zu messen, wodurch hei dieser Messung gleichzeitig eine Unabhängiigkeit vom etwa veränderlichen Anfangsdruck des ganzen Systems erreicht wird. The invention described below provides a solution to the problem represents, with the simplest mechanical means, the differential pressure, which is with flow adjusts to a flow resistance, to measure, thereby making this measurement at the same time Achieves independence from the approximately variable initial pressure of the entire system will.

Die Lösung dieser Aufgabe führt zu einem Strömungswiderstand, z.R. Krümmer W, dessen Dimensionierung abhängt von der im System noch verfügbaren Bernoulli-Verlusthöhe, die für den Energieverbrauch im Strömungswiderstand Verwendung finden kann, und ferner von der im System erforderlichen Durchflußleistung. Beide Seiten des Strömungswiderstands W sind mit den Druckkammern der Meßdose D verbunden, die den erzeugten Differenzdruck auf eine Nlembran 111 übertritt. Die Membran ihrerseits überträgt den Druck z. B. auf ein Kohledruckglied K, wodurch die Druckänderungen elektrisch zur Anzeige gebracht werden können. Vorteil des Verfahrens liegt im sehr einfachen mechanischen Aufbau und in der Unabhängigkeit von den Druckschwankungen im System. The solution to this problem leads to a flow resistance, e.g. Elbow W, the dimensioning of which depends on the Bernoulli loss height still available in the system, which can be used for energy consumption in flow resistance, and also on the flow rate required in the system. Both sides of the drag W are connected to the pressure chambers of the load cell D, the differential pressure generated crosses onto a membrane 111. The membrane in turn transmits the pressure z. B. on a carbon pressure member K, whereby the pressure changes are electrically displayed can be. The advantage of the process is the very simple mechanical structure and in independence from the pressure fluctuations in the system.

Die Anzeige am elektrischen Instrument kann in Liter pro Stunde erfolgen. Um aber z. B. bei Kraftstoffverl)rauchsmessungen in Fahrzeugen die verbrauchte Menge auf Ion km zu beziehen, kann zusätze ich ein elektrischer Umwerter vorgesehen werden. Hierbei wird vom Tachometer T auf eine zweite Spule S2 des Anzeigeinstruments eine veränderliche elektrische Spannung oder eine durch einen vom Tachometer veränderten elektrischen Widerstand erzeugte Stromänderung gegeben, so daß die endgültige Anzeige z. B. in Liter pro 100 km erfolgt. The display on the electrical instrument can be in liters per hour. But to z. B. the amount consumed for fuel loss measurements in vehicles To relate to Ion km, an electrical corrector can also be provided. In this case, the tachometer T acts on a second coil S2 of the display instrument variable electrical voltage or one that has been changed by the speedometer electrical resistance generated current change given so that the final display z. B. takes place in liters per 100 km.

Claims (3)

PATENTANSPRÜCHE: 1. Membrandosenmesser zur Messung des Differenzdrucks von Flüssigkeiten und Gasen, gekennzeichnet dadurch, daß der Differenzdruck an der Membran durch einen an der Meßdose angebauten Strömungswiderstand erzeugt wird. wobei auch sehr kleine Durchflußmengen einen für die Anzeige brauchbaren Differenzdruck ergehen. PATENT CLAIMS: 1. Membrane can meter for measuring the differential pressure of liquids and gases, characterized in that the differential pressure on the Membrane is generated by a flow resistance built onto the load cell. with even very small flow rates a usable differential pressure for the display endure. 2. Membrandosenmesser nach Anspruch 1 wobei die Uhertragung des Differenzdrucks der Membran über einen Kohledruckkontakt in eine elektrische Größe umgesetzt wird. 2. Membrane can knife according to claim 1, wherein the transmission of the differential pressure the membrane is converted into an electrical quantity via a carbon pressure contact. 3. Elektrische Messung für die durch den Membrandosenmesser nach Anspruch i und 2 gelieferte elektrische Größe. bei welcher bei Fahrzeugen die Anzeige des Durchflusses in Liter pro 100 km angegeben wird, derart, daß in einer zeiten Spule eines elektrischen Anzeigegeräts für den Durchfluß ein vom Tachometerstand abhängiger Strom das Meßergebni 5 von Liter pro Stunde auf Liter pro 100 km umwertet. 3. Electrical measurement for by the membrane can knife according to Claims i and 2 supplied electrical size. at which in vehicles the display the flow rate is given in liters per 100 km, in such a way that in one time Coil of an electrical indicator for the flow of one from the speedometer dependent current the Meßergebni 5 converts from liters per hour to liters per 100 km.
DE1951P0005059 1951-02-09 1951-02-09 Flow loss pressure meter Expired DE847208C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1951P0005059 DE847208C (en) 1951-02-09 1951-02-09 Flow loss pressure meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1951P0005059 DE847208C (en) 1951-02-09 1951-02-09 Flow loss pressure meter

Publications (1)

Publication Number Publication Date
DE847208C true DE847208C (en) 1952-08-21

Family

ID=580010

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1951P0005059 Expired DE847208C (en) 1951-02-09 1951-02-09 Flow loss pressure meter

Country Status (1)

Country Link
DE (1) DE847208C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381289A1 (en) * 1977-02-17 1978-09-15 Effa Etudes Sarl Continuous fluid flow meter - gives flow rate and total consumption measurement by monitoring pressure differential across flexible membrane
US4386518A (en) * 1981-03-04 1983-06-07 The United States Of America As Represented By The Secretary Of The Interior Apparatus and method for measuring low concentrations of high molecular weight polymers in solution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381289A1 (en) * 1977-02-17 1978-09-15 Effa Etudes Sarl Continuous fluid flow meter - gives flow rate and total consumption measurement by monitoring pressure differential across flexible membrane
US4386518A (en) * 1981-03-04 1983-06-07 The United States Of America As Represented By The Secretary Of The Interior Apparatus and method for measuring low concentrations of high molecular weight polymers in solution

Similar Documents

Publication Publication Date Title
DE3213303C2 (en) Measuring device for determining the capacitance of a capacitor partially immersed in a liquid
DE847208C (en) Flow loss pressure meter
DE409318C (en) Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o.
US1513558A (en) Method of and apparatus for determining ion concentration
DE362671C (en) Device for measuring air or gas pressure
US1727254A (en) Apparatus for measurement of the level and flow of liquids and the height or movement of a body
DE721490C (en) Vibration, force or strain gauges
DE564392C (en) Electric water level indicator and controller, in which the fluid resistance, which changes with the immersion depth of the electrodes, is used for display
DE842122C (en) Device for measuring specific fuel consumption
DE661211C (en) Method for measuring an auxiliary current proportional to a main current and consisting of an electrolytically decomposable substance
DE842655C (en) Procedure for testing contact lines
DE898970C (en) Process for recording the energy that is still available for withdrawal within a certain period of time
DE564621C (en) Device for measuring pressures
DE880506C (en) Pressure gauge for flowing gases and vapors
DE593157C (en) Device for the continuous determination of the oxygen content of a gas mixture
DE932822C (en) Partial flow meter
AT57581B (en) Electrolytic apparatus for electricity meters, recorders, switching devices and other electrical apparatus.
DE643294C (en) Device for displaying, recording or regulating print heights
DE848578C (en) Device for temperature and pressure measurement, especially for refrigeration systems
DE276499C (en)
DE280286C (en)
DE663389C (en) Device for checking and / or displaying the vacuum in vacuum discharge apparatus with glow or mercury cathode
DE738214C (en) DC high voltage watt hour counter
DE577900C (en) Device for measuring current and ship speeds
DE372805C (en) Electric remote indicator or teleprinter for pressure gauges