DE1648136A1 - Differential pressure flow meter - Google Patents
Differential pressure flow meterInfo
- Publication number
- DE1648136A1 DE1648136A1 DE19671648136 DE1648136A DE1648136A1 DE 1648136 A1 DE1648136 A1 DE 1648136A1 DE 19671648136 DE19671648136 DE 19671648136 DE 1648136 A DE1648136 A DE 1648136A DE 1648136 A1 DE1648136 A1 DE 1648136A1
- Authority
- DE
- Germany
- Prior art keywords
- differential pressure
- flow meter
- pressure flow
- flow
- measuring
- 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.)
- Pending
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
-
- 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
- G01F1/206—Measuring pressure, force or momentum of a fluid flow which is forced to change its direction
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Description
Differensdruck-Strömungsmesser Zur Mengenmessung von Flüssigkeiten und Gasen sind in der Praxis verschiedene Systeme bekannt. Die allgemein bekannteste dürfte wohl die Staublenden-Messung sein, Außer dieser werden auch noch häufig Schwebekörpermesser sowie Stauplattenmesser verwendet. Differential pressure flow meter For measuring the quantity of liquids and gases, various systems are known in practice. The most popular one Probably the dust aperture measurement, besides this, float meters are also often used as well as baffle knife used.
Alle vorbeschriebenen Meßarten haben den einen Nachteil, daß es hier'an den Meßstellen zu relativ starken Querschnitts-Einschnürungen kommt, durch die u. U. starke Druckverluste entstehen. Bei verschmutzten Medien führt es an diesen Stellen oft zu Ablagerungen bzw, zu Verstopfungen. All the types of measurement described above have the one disadvantage that this is the case the measuring points to relatively strong cross-sectional constrictions through which u. U. strong pressure losses arise. In the case of dirty media, it leads to these points often to deposits or to blockages.
Bei der im folgenden beschriebenen Meßmethode werden die vorher beschriebenen Nachteile vermieden, da man zur Messung der Durch'flußmenge weder eine Blende, Stauplatte oder Schwebekörper verwendet, den freien Querschnitt der Rohrleitung also nicht verändert. Das Meßgerät hat kein Strömungshindernis, so daß auch stark verschmutzte Medien gemessen werden können. Weiter ist das Gerät weitgehend unempfindlich gegen Viskositätsänderungen. In the measurement method described below, those previously described are used Disadvantages are avoided because neither a diaphragm nor a baffle plate is required to measure the flow rate or float is used, i.e. not the free cross-section of the pipeline changes. The measuring device has no flow obstacles, so that even heavily soiled ones Media can be measured. Furthermore, the device is largely insensitive to Viscosity changes.
Die Druckdifferenz zum Messen der Strömung wird dadurch erzeugt, daß das Medium durch eine Rohrschleife, einen halbkreisförmigen; Bogen oder auch einfachen Winkelbogen geführt wird, wobei es unerheblich ist, ob die Rohrschleife kreisförmig oder oval verläuft oder ob der Rohrquersohnitt rund oder eine sonstige Form hat. The pressure difference for measuring the flow is generated by that the medium passes through a pipe loop, a semicircular; Bow or also simple elbow is performed, it is irrelevant whether the pipe loop circular or oval or whether the Rohrquersohnitt round or some other Has shape.
Beim Passieren der Rohrschleife oder dgl. entwickelt das Medium infolge seiner Flichkraft einen Druck auf die Außenwandung, während an der Innenwandung ein Unterdruck entsteht. When passing the pipe loop or the like. The medium develops as a result its Flichkraft a pressure on the outer wall, while on the inner wall a negative pressure is created.
Die Druckdifferenz wird in der symetrischen Ebene der Schleife, des Winkelbogens e ct gemessen und zur Anzeige der Durchflußgeschwindigkeit resp. der Durchflußmenge benutzt. Das Druckausgangs-Signal ist annähernd quadratisch. Die Breite des Meßbereiches ist in jedem Fale günstiger als die einer Staublende resp. Stauplatte. The pressure difference is in the symmetrical plane of the loop, des Angle arc e ct measured and to display the flow rate, respectively. the Flow rate used. The print output signal is approximately square. the Width of the measuring range is more favorable in each case than that of a dust cover, respectively. Stowage plate.
In der beigefügten Skizze ist ein Durchfl#messgerät in einer beispielsweisen Form dargestellt, wobei"1" die Rohrschleife bedeutet,"2"und"3" sind die ibnahmestellen für das Ausgangssignal, d. h0 "2" den Differenzdruck + und "3" den Differenzdruck resp. Unterdruck. Die Anzeige erfolgt durch das Anzeigeinstrument,"5". Im vorliegenden Falle ein Differenzdruokmanometer. Anstelle -dieses D-f ferenzdruckmanome ters kann auch ein , Sohwebekörpermesser treten durch den eine von + nach - fließende Teilmenge des Mediums gemessen wird. Selbstverständlich tat auch die Boaufschlagung eines Transmitters mit einem elektrischen oder pneumatischen Ausgangssignal möglich. Die eingezeichneten Pfeile deuten die Durchflußrichtung an. Grundsätzlich ist die Durchflußrichtung und Einbaulage für die Messung ohne Bedeutung. In the attached sketch a flow meter is shown as an example Shape shown, where "1" means the pipe loop, "2" and "3" are the pick-up points for the output signal, d. h0 "2" the differential pressure + and "3" the differential pressure resp. Negative pressure. The display is made by the display instrument, "5". In the present Trap a differential pressure gauge. Instead of this D-f ferenzdruckmanometer can also a, Sohwebekkörpermesser pass through the one from + to - flowing subset of the medium is measured. Of course, the booster did too one Transmitter with an electrical or pneumatic output signal possible. the The arrows shown indicate the direction of flow. Basically the direction of flow is and mounting position is irrelevant for the measurement.
Schutzansprüche 1). 3ifferenzdruck-Strömungsmesser dadurch gekennzeichnet, daß das Verhältnis des Krümmungsradius vom Meßgerät zum Radius des Meßrohres oder bei rechteckigen Querschnitten zur kleinsten Seitenlänge in der Größenordnung 1:1 bis 10:1 liegen kann. Protection claims 1). 3 differential pressure flow meter characterized that the ratio of the radius of curvature of the measuring device to the radius of the measuring tube or in the case of rectangular cross-sections, the smallest side length in the order of 1: 1 can be up to 10: 1.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET0033013 | 1967-01-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1648136A1 true DE1648136A1 (en) | 1971-06-16 |
Family
ID=7557446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671648136 Pending DE1648136A1 (en) | 1967-01-19 | 1967-01-19 | Differential pressure flow meter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1648136A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2384240A1 (en) * | 1977-03-18 | 1978-10-13 | Texaco Development Corp | MULTI-PHASE FLUID MEASURING DEVICE |
-
1967
- 1967-01-19 DE DE19671648136 patent/DE1648136A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2384240A1 (en) * | 1977-03-18 | 1978-10-13 | Texaco Development Corp | MULTI-PHASE FLUID MEASURING DEVICE |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2450730A1 (en) | METHOD OF LOCATING A LEAK IN LIQUID PIPING | |
DE102015111642A1 (en) | Flowmeter according to the vortex meter principle | |
DE1648136A1 (en) | Differential pressure flow meter | |
DE1927551A1 (en) | Photoelectric bubble measuring device for testing gas-tight containers and the like. | |
DE426957C (en) | Flow meter with movable damming body | |
DE102007062781A1 (en) | Leakage locating device for locating leakage in region of e.g. pneumatic air supply, has contactlessly operating sensor implemented as ultrasonic sensor, which includes sound sensor, and mouth piece with axial end including inlet opening | |
DE1960869U (en) | DIFFERENTIAL PRESSURE - FLOW METER. | |
DE867307C (en) | Flow meter | |
DE615246C (en) | Device for displaying the fuel consumption in a certain period of time, especially for motor vehicles | |
DE202014006894U1 (en) | Flow sensor in pipe and hose systems with processor-based fully electronic evaluation unit for spreading manure with appropriate agricultural machinery and equipment | |
DE4242444A1 (en) | Testing and calibrating throughput vol. flow meter | |
DE722745C (en) | Pressure gauge connection | |
DE633842C (en) | Meter and regulator for currents in closed lines | |
DE465051C (en) | Protective arrangement for differential pressure gauges | |
DE583729C (en) | Trip and fluid level meters | |
DE701392C (en) | Method for determining the liquid content of a container | |
DE839729C (en) | Arrangement for measuring flow velocities | |
DE468977C (en) | Arrangement for measuring the pressure difference between two rooms | |
DE713090C (en) | Device for ensuring the unhindered flow of a flowing substance through a pipeline containing a volume counter | |
DE838658C (en) | Differential pressure meter | |
DE432520C (en) | Device for determining the specific gravity of gases at which a gas flow passes through a pipeline with a dam arrangement | |
DE395853C (en) | Steam or liquid meter with rim | |
DE393172C (en) | Liquid level indicator | |
DE1026978B (en) | Measuring device for performing flow measurements | |
DE710041C (en) | Device for testing the breathing resistance of respiratory protection filters |