AT88082B - Measuring nozzle for speed measurements of liquids and gases. - Google Patents

Measuring nozzle for speed measurements of liquids and gases.

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Publication number
AT88082B
AT88082B AT88082DA AT88082B AT 88082 B AT88082 B AT 88082B AT 88082D A AT88082D A AT 88082DA AT 88082 B AT88082 B AT 88082B
Authority
AT
Austria
Prior art keywords
liquids
gases
speed measurements
measuring nozzle
pressure
Prior art date
Application number
Other languages
German (de)
Inventor
Friedrich Dr Ing Gebers
Original Assignee
Friedrich Dr Ing Gebers
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 Friedrich Dr Ing Gebers filed Critical Friedrich Dr Ing Gebers
Application granted granted Critical
Publication of AT88082B publication Critical patent/AT88082B/en

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Description

  

   <Desc/Clms Page number 1> 
 



    Messdüse   für Geschwindigkeitsmessungen von Flüssigkeiten und Gasen. 



     Vorliegende Erfindung gründet sich   auf die bekannte Erscheinung, dass   der grösste Unter-   druck an einem zu einer   Flüssigkeit oder   einem Gas relativ bewegten Rotationskörper gleich hinter der Ablösungsstelle der Stromlinien auftrifft. Der Gegenstand der Erfindung besteht in einer Anordnung zur konzentrischen Unterdruckentnahme auf der der Strömung zugekehrten vorderen Hälfte eines   kugel-oder eiförmigen Rotationskörpers,   an dessen vorderster Stelle die   Überdruckentnahme   wie üblich stattfindet. Die Lage der Unterdruck-stelle richtet sich bei der neuen Düse nach der Dicke des nach hinten führenden Halters der   Düse.   auch ist davon die Grösse des erzielbaren Unterdruckes und damit die Genauigkeit der Messung abhängig. 



   Die Düse wird in bekannter Weise mit einem Manometer verbunden, welches die Druckunterschiede ablesbar macht. Die günstigste Lage der   Unterdruckentnahme wird   durch Versuche festgelegt. 



   Die Erfindung soll dazu dienen, um   möglichst genaue Geschwindigkeitsmessungen   un-   abhängig vom   statischen Druck an einer möglichst eng begrenzten Stelle unter möglichst geringer Störung benachbarter Stromfäden auszuführen. 



   PATENT-ANSPRÜCHE : 
 EMI1.1 
 Geschwindigkeitsmessung herangezogen wird, um an den Stellen grössten Druckunterschiedes an demselben eine Druckentnahme zu bewerkstelligen. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Measuring nozzle for speed measurements of liquids and gases.



     The present invention is based on the known phenomenon that the greatest negative pressure occurs on a rotating body that is moved relative to a liquid or a gas immediately behind the separation point of the streamlines. The subject matter of the invention consists in an arrangement for concentric extraction of negative pressure on the front half of a spherical or egg-shaped rotating body facing the flow, at the front of which the positive pressure extraction takes place as usual. The position of the vacuum point on the new nozzle depends on the thickness of the nozzle holder that leads to the rear. The size of the attainable negative pressure and thus the accuracy of the measurement also depend on it.



   The nozzle is connected in a known manner to a manometer, which makes the pressure differences readable. The most favorable position for the vacuum extraction is determined through tests.



   The aim of the invention is to enable the speed measurements to be carried out as precisely as possible, independently of the static pressure, at a point that is as narrowly defined as possible with as little disruption as possible to adjacent streamlines.



   PATENT CLAIMS:
 EMI1.1
 Velocity measurement is used to accomplish a pressure extraction at the points of greatest pressure difference.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Eine Ausführungsform nach Anspruch i, dadurch gekennzeichnet, dass der entgegengesetzt der Bewegungsrichtung nach hinten führende Halter, der auch zur Fortleitung des Druckes und Unterdruckes dient. einen kleineren Durchmesser als der genannte Rotationskörper besitzt. EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. An embodiment according to claim i, characterized in that the opposite to the direction of movement to the rear leading holder, which is also used to forward the pressure and vacuum. has a smaller diameter than said body of revolution. EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT88082D 1920-03-20 1920-03-20 Measuring nozzle for speed measurements of liquids and gases. AT88082B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT88082T 1920-03-20

Publications (1)

Publication Number Publication Date
AT88082B true AT88082B (en) 1922-04-25

Family

ID=3608696

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88082D AT88082B (en) 1920-03-20 1920-03-20 Measuring nozzle for speed measurements of liquids and gases.

Country Status (1)

Country Link
AT (1) AT88082B (en)

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