DE202005008337U1 - Dynamic pressure probe has probe head with rectangular cross-section in which channels run which, during measurement, lead to the part of probe which is located in medium to be measured and which lead to adaptors mounted on probe head - Google Patents

Dynamic pressure probe has probe head with rectangular cross-section in which channels run which, during measurement, lead to the part of probe which is located in medium to be measured and which lead to adaptors mounted on probe head Download PDF

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Publication number
DE202005008337U1
DE202005008337U1 DE202005008337U DE202005008337U DE202005008337U1 DE 202005008337 U1 DE202005008337 U1 DE 202005008337U1 DE 202005008337 U DE202005008337 U DE 202005008337U DE 202005008337 U DE202005008337 U DE 202005008337U DE 202005008337 U1 DE202005008337 U1 DE 202005008337U1
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Germany
Prior art keywords
probe
lead
probe head
dynamic pressure
head
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Expired - Lifetime
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DE202005008337U
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German (de)
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SYSTEC CONTROLS MES und REGELT
systec Controls Meß- und Regeltechnik GmbH
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SYSTEC CONTROLS MES und REGELT
systec Controls Meß- und Regeltechnik GmbH
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Publication of DE202005008337U1 publication Critical patent/DE202005008337U1/en
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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
    • G01F1/46—Pitot tubes
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
    • G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
    • G01P5/165—Arrangements or constructions of Pitot tubes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Dynamic pressure probe has probe head (1) with rectangular cross-section. Channels (2,3) run in the probe head which, during measurement, lead to the part of probe which is located in the medium to be measured. The channels lead to the adaptors (8,9) mounted on probe head.

Description

Technisches Gebiettechnical area

Die Erfindung betrifft eine Staudrucksonde, bei welcher in einem Staurohr Kanäle verlaufen. Diese Kanäle enden jeweils in einer oder mehreren Öffnungen. Zur Messung des Differentialdrucks eines strömenden Mediums wird das Staurohr so im strömenden Medium positioniert, dass und die Öffnungen des einen Kanals stromaufwärts gerichtet sind und die Öffnungen des anderen Kanals stromabwärts gerichtet sind.The The invention relates to a dynamic pressure probe, in which in a pitot tube channels run. These channels each ending in one or more openings. For measuring the differential pressure a streaming Medium, the pitot tube is positioned in the flowing medium, that and the openings one channel upstream are directed and the openings the other channel downstream are.

Am anderen Ende des Staurohes laufen die Kanäle in einem Kopfstück mit quadratischem oder rechteckigem Querschnitt weiter.At the At the other end of the pit, the channels run in a square head or rectangular cross-section on.

Staudrucksonden werden eingesetzt um die Strömungsgeschwindigkeit von Gas, Dampf oder Flüssigkeit zu erfassen.Pitot tubes are used around the flow velocity of gas, vapor or liquid capture.

Stand der TechnikState of technology

Eine solche Staudrucksonde ist aus der EP 0198197 B1 bekannt ist.Such a pitot tube is from the EP 0198197 B1 is known.

Die Verbindungslinie der Kanalachsen steht senkrecht zu einem Paar der Aussenflächen und verläuft parallel zum anderen Paar der Aussenflächen des Kopfstücks. Im Kopfstück befinden sich Bohrungen, die von gegenüberliegenden Seite aus jeweils einen Kanal treffen. Am Kopfstück sind Schraubstutzen anschließende Elemente befestigt. Bei diesen Elementen handelt es sich beispielsweise um Kondensatgefäße oder Rohrbögen.The Connecting line of the channel axes is perpendicular to a pair of outer surfaces and runs parallel to the other pair of outer surfaces of the head piece. in the headpiece there are holes, the one from the opposite side Meet channel. At the headpiece are screw socket subsequent Elements attached. These elements are, for example around condensate vessels or Pipe bends.

Diesen Elementen nachgeordnet sind je Kanal Sensoren, die den Druck messen.this Each element is followed by sensors that measure the pressure.

Nachteilig bei der bekannten Staudrucksonde ist die Notwendigkeit je nach Einbaulage und/oder Verlauf der Anschlussleitungen zusätzliche Adapter und/oder Rohrbögen zwischen Kopfstück der Sonde und den Sensoren anzubringen.adversely in the known pitot tube is the need depending on the installation position and / or course of the connecting lines additional adapters and / or pipe bends between headpiece the probe and the sensors.

Bei Messungen von Flüssigkeiten ist es notwendig, dass der auf den Sensoren lastende statische Druck gleich ist. Dieser statische Druck entsteht durch die in den Adaptern und/oder Rundbögen und/oder sonstigen Anschlussleitungen stehende Flüssigkeitssäule.at Measurements of liquids it is necessary that the static pressure bearing on the sensors is equal to. This static pressure is created by the in the adapters and / or round arches and / or other connecting lines standing liquid column.

Bei Messungen von Dampf ist es nötig, dass Kondensat aus dem Staudruckrohr wieder abfließen kann.at Measurements of steam it is necessary that condensate can flow out of the dynamic pressure pipe again.

Die Messungen der unterschiedlichen Medien können an horizontal oder an vertikal verlaufenden Leitungen durchgeführt werden, woraus sich eine Vielzahl von Montagemöglichkeiten ergibt.The Measurements of different media can be made horizontally or at vertically extending lines are carried out, resulting in a Variety of mounting options results.

Es ist beim Stand der Technik nötig, für jede Montageart beide Kanäle die Adapter und/oder Rundbögen und/oder sonstigen Anschlussleitungen genau aufeinander angepasst zu verlegen, damit die Flüssigkeitssäule bei beiden Sensoren die gleiche Höhe hat.It is necessary in the prior art, for every type of installation both channels the adapters and / or round bows and / or other connection lines adapted to each other exactly to lay, so that the liquid column at both sensors the same height Has.

Offenbarung der Erfindung Technische Aufgabeepiphany OF THE INVENTION Technical Problem

Es ist die Aufgabe der Erfindung eine universal einzusetzende Staudrucksonde zu schaffen, welche es ermöglicht, die unterschiedlichen Montagearten ohne aufwändige Adapter und/oder Rundbögen abzudecken.It the object of the invention is a universally applicable pitot tube to create, which makes it possible to cover the different types of installation without elaborate adapters and / or round arches.

Technische LösungTechnical solution

Die Erfindung löst diese Aufgabe durch eine Staudrucksonde, deren Kanäle in besonderer und erfinderischer Weise im Kopf der Staudrucksonde verlaufen.The Invention solves this task by a pitot tube, whose channels in particular and inventive way in the head of the pitot tube run.

Durch eine spezielle Ausgestaltung des Kopfes ist es möglich, jede beliebige Montageart mit einem standardisiertem Anschlusselement, welches dann situationsgerecht auf die individuelle Montageart in einer bestimmten Lage am Kopf befestigt wird zu realisieren.By a special design of the head, it is possible, any type of mounting with a standardized connection element, which is then appropriate to the situation on the individual mounting method in a specific position on the head is attached to realize.

Vorteilhafte Wirkungenadvantageous effects

Durch die Tatsache, dass nur ein standardisiertes Anschlusselement nötig ist wird vorteilhaft die Teilevielfalt reduziert.By the fact that only one standardized connection element is necessary Advantageously, the variety of parts is reduced.

Insbesondere der beim Stand der Technik erforderliche Aufwand zur Kalibrierung der Höhe für die Flüssigkeitssäule entfällt erfindungsgemäß.Especially the effort required for calibration in the prior art the height for the liquid column is omitted according to the invention.

Kurze Beschreibung der ZeichnungenShort description of drawings

Die 1 zeigt in Draufsicht einen Querschnitt durch den Kopf der erfindungsgemäßen Staudrucksonde.The 1 shows in plan view a cross section through the head of the dynamic pressure probe according to the invention.

Ausführungsform(en) der ErfindungEmbodiment (s) of the invention

Die 1 zeigt einen Sondenkopf 1 mit rechteckigem Querschnitt. Im Kopf 1 verlaufen Kanäle 2, 3. Die Achsen der Kanäle 2, 3 liegen auf einer Linie die schräg gegenüberliegende Ecken des Kopfes 1 verbindet.The 1 shows a probe head 1 with rectangular cross section. In the head 1 run channels 2 . 3 , The axes of the channels 2 . 3 lie on a line the diagonally opposite corners of the head 1 combines.

Diese Kanäle 2, 3 führen zu dem – hier nicht gezeigten – Teil der Sonde, der sich bei einer Messung innerhalb des strömenden Mediums befindet.These channels 2 . 3 lead to the - not shown here - part of the probe, which is located in a measurement within the flowing medium.

Von zwei gegenüberliegenden Außenflächen 4, 5 des Kopfes 1 aus verlaufen Bohrungen 6, 7 welche die Kanäle 2, 3 treffen.From two opposite outer surfaces 4 . 5 Of the head 1 out of holes 6 . 7 which the channels 2 . 3 to meet.

An den Außenflächen 4, 5 sind Adapter 8, 9 befestigt, beispielsweise indem diese angeschweißt werden. Die Adapter 8, 9 sind vor dem Verschweißen in beliebigem Winkel – vorzugsweise in 90 Grad Schritten – um die Linie L drehbar positionierbar.On the outer surfaces 4 . 5 are adapters 8th . 9 fastened, for example, by being welded. The adapters 8th . 9 are before the welding in any angle - preferably in 90 degree increments - rotatably positionable about the line L.

Hieraus ergibt sich eine hohe Flexibilität bei der Anpassung an die örtlichen Gegebenheiten, an denen die Sonde später eingesetzt werden soll.From this results in a high flexibility in adapting to the local Conditions in which the probe is to be used later.

Die Adapter ihrerseits weisen ein Gewinde 10, 11 auf. Die Adapter 8, 9 und Gewinde 8, 9 sind so dimensioniert, dass die Normmaße (54 mm Abstand) für den direkten Anschluss von Differentialdruck Messumformern eingehalten sind.The adapters themselves have a thread 10 . 11 on. The adapters 8th . 9 and thread 8th . 9 are dimensioned so that the standard dimensions (54 mm distance) for direct connection of differential pressure transmitters are complied with.

Dies vereinfacht zusätzlich die Gesamtmontage des Messsystems.This simplified in addition the overall assembly of the measuring system.

Die Flexibilität der erfindungsgemäßen Sonde im Hinblick auf die unterschiedlichsten Anschlussbedingungen wird zudem erhöht, als es auch möglich ist die Adapter anstatt an die Außenflächen 4, 5 an die Außenflächen 12, 13 zu befestigen.The flexibility of the probe according to the invention in view of the different connection conditions is also increased, as it is also possible, the adapter instead of the outer surfaces 4 . 5 to the outer surfaces 12 . 13 to fix.

Für diesen Fall werden die gepunktet dargestellten Bohrungen 14, 15 bis zu den Kanälen 2, 3 durchgeführt. Die Bohrungen 6, 7 sind dann nicht vorhanden.For this case, the dotted holes shown 14 . 15 to the channels 2 . 3 carried out. The holes 6 . 7 are not available then.

Die Bohrungen 6, 7 und 14, 15 sind so gewählt, dass der Bohrungseingang auf gleichem Niveau liegt. Im gezeigten Beispiel liegt diese Niveau auf der Linie L.The holes 6 . 7 and 14 . 15 are chosen so that the bore input is at the same level. In the example shown, this level is on the line L.

Hierdurch wird erfinderisch automatisch erreicht, dass bei Messungen von strömenden Flüssigkeiten gleich hohe Flüssigkeitsäulen auf den beiden Seiten des Differentialdrucksensors lasten. hereby is inventively achieved automatically that in measurements of flowing fluids equal to high liquid columns load the two sides of the differential pressure sensor.

Bei der Messung von Dampf kondensiert der Dampf im Hohlraum der Adapter 8, 9 und mit der Zeit füllen sich auch bei einer Dampfmessung die Adapter 8, 9 mit Flüssigkeit bis zur Linie L und auf beiden Seiten des Differentialdrucksensors lastet die gleich hohe Flüssigkeitssäule.When measuring steam, the vapor condenses in the cavity of the adapters 8th . 9 and over time, the adapters also fill up in a vapor measurement 8th . 9 with liquid up to the line L and on both sides of the differential pressure sensor the same high liquid column loads.

Gewerbliche Anwendbarkeitcommercial applicability

Die Erfindung ist für die Messung der Geschwindigkeit fließender Medien in weiten Einsatzgebieten anwendbar.The Invention is for the measurement of the speed of flowing media in a wide range of applications applicable.

Claims (5)

Staudrucksonde mit einem Sondenkopf, in welchem Kanäle verlaufen, die zu dem Teil der Sonde führen, der sich während einer Messung im zu messenden Medium befindet und an den Sondenkopf angebrachten Adaptern, dadurch gekennzeichnet, dass der Sondenkopf (1) einen rechteckigen Querschnitt aufweist.Dynamic pressure probe with a probe head, in which run channels leading to the part of the probe, which is located during a measurement in the medium to be measured and adapters attached to the probe head, characterized in that the probe head ( 1 ) has a rectangular cross-section. Staudrucksonde nach Anspruch 1 dadurch gekennzeichnet, dass der Sondenkopf (1) einen quadratischen Querschnitt aufweist.Dynamic pressure probe according to claim 1, characterized in that the probe head ( 1 ) has a square cross-section. Staudrucksonde nach einem der vorangegangenen Ansprüche dadurch gekennzeichnet, dass die Achsen der Kanäle (2, 3) auf der zwischen zwei Ecken des Sondenkopfes (1) verlaufenden Diagonalen (D) liegen.Dynamic pressure probe according to one of the preceding claims, characterized in that the axes of the channels ( 2 . 3 ) on the between two corners of the probe head ( 1 ) extending diagonals (D) lie. Staudrucksonde nach einem der vorangegangenen Ansprüche dadurch gekennzeichnet, dass die Lage der Kanäle so gewählt ist, dass die Kanäle (2, 3) von mindestens zwei Außenflächen (4, 5, 12, 13) des Sondenkopfes (1) durch Querbohrungen (6, 7, 14, 15) erreichbar sind.Dynamic pressure probe according to one of the preceding claims, characterized in that the position of the channels is selected so that the channels ( 2 . 3 ) of at least two outer surfaces ( 4 . 5 . 12 . 13 ) of the probe head ( 1 ) by transverse bores ( 6 . 7 . 14 . 15 ) are reachable. Staudrucksonde nach Anspruch 4 dadurch gekennzeichnet, dass die Bohrungen so verlaufen, dass der Bohrungsausgang von jeweils gegenüberliegenden Bohrungspaaren (6, 7) und (14, 15) auf gleichem Niveau liegen.A dynamic pressure probe according to claim 4, characterized in that the bores extend in such a way that the bore exit of respectively opposite pairs of bores ( 6 . 7 ) and ( 14 . 15 ) are at the same level.
DE202005008337U 2005-01-26 2005-05-24 Dynamic pressure probe has probe head with rectangular cross-section in which channels run which, during measurement, lead to the part of probe which is located in medium to be measured and which lead to adaptors mounted on probe head Expired - Lifetime DE202005008337U1 (en)

Priority Applications (1)

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DE202005008337U DE202005008337U1 (en) 2005-01-26 2005-05-24 Dynamic pressure probe has probe head with rectangular cross-section in which channels run which, during measurement, lead to the part of probe which is located in medium to be measured and which lead to adaptors mounted on probe head

Applications Claiming Priority (3)

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DE202005001314.5 2005-01-26
DE202005001314 2005-01-26
DE202005008337U DE202005008337U1 (en) 2005-01-26 2005-05-24 Dynamic pressure probe has probe head with rectangular cross-section in which channels run which, during measurement, lead to the part of probe which is located in medium to be measured and which lead to adaptors mounted on probe head

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DE202005008337U1 true DE202005008337U1 (en) 2006-06-08

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1093229A (en) * 1912-08-05 1914-04-14 Gen Electric Pitot plug for fluid-meters.
US1119581A (en) * 1913-11-17 1914-12-01 Gen Electric Nozzle-plug.
US5773726A (en) * 1996-06-04 1998-06-30 Dieterich Technology Holding Corp. Flow meter pitot tube with temperature sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1093229A (en) * 1912-08-05 1914-04-14 Gen Electric Pitot plug for fluid-meters.
US1119581A (en) * 1913-11-17 1914-12-01 Gen Electric Nozzle-plug.
US5773726A (en) * 1996-06-04 1998-06-30 Dieterich Technology Holding Corp. Flow meter pitot tube with temperature sensor

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