DE418349C - Measuring nozzle - Google Patents

Measuring nozzle

Info

Publication number
DE418349C
DE418349C DEG58336D DEG0058336D DE418349C DE 418349 C DE418349 C DE 418349C DE G58336 D DEG58336 D DE G58336D DE G0058336 D DEG0058336 D DE G0058336D DE 418349 C DE418349 C DE 418349C
Authority
DE
Germany
Prior art keywords
measuring nozzle
nozzle
measuring
sheet metal
pipeline
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
DEG58336D
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.)
WILHELM EDUARD GERMER
Original Assignee
WILHELM EDUARD GERMER
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 WILHELM EDUARD GERMER filed Critical WILHELM EDUARD GERMER
Priority to DEG58336D priority Critical patent/DE418349C/en
Application granted granted Critical
Publication of DE418349C publication Critical patent/DE418349C/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
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/44—Venturi tubes

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Description

Meßdüse. Die Erfindung betrifft die bekannte, aus einem Stück bestehende Meßdüse, die zwischen zwei Flanschen einer Rohrleitung eingebaut wird, und besteht in der durch den Anspruch gekennzeichneten und nachstehend näher beschriebenen Anordnung zur Bildung eines geschlossenen Ringraumes für die Aufnahme des statischen Druckes.Measuring nozzle. The invention relates to the known one-piece Measuring nozzle, which is installed between two flanges of a pipeline, and consists in the arrangement characterized by the claim and described in more detail below to form a closed annulus to absorb the static pressure.

Auf der Zeichnung sind in Abb. i und 2 zwei Ausführungsbeispiele dargestellt, und zwar ist hierbei eine Meßdüse zugrunde gelegt, die durch Anbau eines Blechauslaufrohres nach Art der bekannten Venturidüse gestaltet ist.In the drawing, two exemplary embodiments are shown in Figs. I and 2, namely here a measuring nozzle is used as a basis, which by adding a sheet metal outlet pipe is designed in the manner of the known Venturi nozzle.

Die Düse nach Abb. i ist für Rohrleitungen kleineren Durchmessers und die nach Abb. 2 für größere Durchmesser bestimmt. Hinsichtlich der die Erfindung bildenden Einrichtung unterscheiden sie sich nicht. Es bezeichnet a die aus einem Stück bestehende massive Meßdüse, die zwischen zwei Flanschen einer Rohrleitung üblicher Art eingebaut ist. An der vorderen Stirnseite ist eine Ringnut b eingedreht, .deren äußerer Durchmesser gleich dem inneren Durchmesser der Rohrleitung ist. Vor die Stirnseite ist ein zweckmäßig zwischen Rohrleitung und Düse eingeklemmtes Blech gelegt, das eine Reihe von Löchern aufweist, die vor der Ringnut liegen. Es wird so ein geschlossener Ringraum zur Aufnahme des statischen Druckes gebildet; der mit dem Differenzdurchmesser in Verbindung gebracht wird und keine Wirbelbildung hervorruft, wie dies bei einem offenen Ringraum der Fall sein würde.The nozzle according to Fig. I is for pipes with a smaller diameter and the one according to Fig. 2 for larger diameters. Regarding the invention educational institution they do not differ. It denotes the from one Piece of existing massive measuring nozzle, which is between two flanges of a pipeline usual type is installed. An annular groove b is screwed into the front face, .whose outer diameter is equal to the inner diameter of the pipeline. before the end face is a sheet metal suitably clamped between the pipeline and the nozzle placed, which has a series of holes that lie in front of the annular groove. It will such a closed annulus to absorb the static pressure educated; which is associated with the difference diameter and none Induces vortex formation, as would be the case with an open annulus.

Die Bildung eines geschlossenen Ringraumes durch eine Eindrehung oder eine auf sonstige Art hergestellte Ringnut und ein sie abdeckendes gelochtes Blech ist an sich nicht neu. Indessen handelt es sich bei den bekannten Anordnungen um Ringnuten, die an der Wand der Meßdüse laufen und durch einen gelochten Blechzylinder geschlossen werden. Die Übertragung dieser Anordnung auf vorliegenden Fall ergibt den besonderen Vorteil, daß das abschließende Blech durch Einklemmen bequem befestigt werden kann. Die hier dargestellten Meßdüsen sind außerdem mit einem Blechauslaufrohr d versehen, das durch straffes Einpassen oder Klemmen befestigt ist.The formation of a closed annulus by turning or an annular groove produced in some other way and a perforated sheet metal covering it is not new in itself. However, the known arrangements are Ring grooves that run on the wall of the measuring nozzle and through a perforated sheet metal cylinder getting closed. The transfer of this arrangement to the present case results the particular advantage that the final sheet is conveniently fastened by clamping can be. The measuring nozzles shown here are also equipped with a sheet metal outlet pipe d, which is secured by tight fitting or clamping.

Claims (1)

PATENT-ANSPRUCFI: Aus einem Stück bestehende Meßdüse, die zwischen die Flanschen einer bestehenden Rohrleitung eingebaut ist, gekennzeichnet durch eine an der vorderen Stirnseite angebrachte und im Anschluß an die innere Rohrwand verlaufende Eindrehung (b), über die ein gelochtes Blech gelegt ist, so :daß eine geschlossene ringförmige Druckkammer entsteht, von der der statische Druck vor der Meßdlise seitlich durch eineAnbohrung in derMeßduse abgenommen wird. PATENT APPLICATION: A measuring nozzle consisting of one piece, which is installed between the flanges of an existing pipeline, characterized by a recess (b) attached to the front face and following the inner pipe wall, over which a perforated plate is placed, see above : that a closed ring-shaped pressure chamber is created, from which the static pressure in front of the measuring nozzle is taken laterally through a hole in the measuring nozzle.
DEG58336D 1923-01-20 1923-01-20 Measuring nozzle Expired DE418349C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG58336D DE418349C (en) 1923-01-20 1923-01-20 Measuring nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG58336D DE418349C (en) 1923-01-20 1923-01-20 Measuring nozzle

Publications (1)

Publication Number Publication Date
DE418349C true DE418349C (en) 1925-09-05

Family

ID=7131860

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG58336D Expired DE418349C (en) 1923-01-20 1923-01-20 Measuring nozzle

Country Status (1)

Country Link
DE (1) DE418349C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704555A (en) * 1955-03-22 Low loss venturi tube
US3406569A (en) * 1965-07-07 1968-10-22 Fischer & Porter Co Magnetic flowmeter of improved linearity
US5693226A (en) * 1995-12-14 1997-12-02 Amway Corporation Apparatus for demonstrating a residential point of use water treatment system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704555A (en) * 1955-03-22 Low loss venturi tube
US3406569A (en) * 1965-07-07 1968-10-22 Fischer & Porter Co Magnetic flowmeter of improved linearity
US5693226A (en) * 1995-12-14 1997-12-02 Amway Corporation Apparatus for demonstrating a residential point of use water treatment system

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