DE202004005482U1 - Dynamic pressure sensor, has openings at ends of channels arranged so that vertical axis passes through opening surface at angle to direction of flow - Google Patents
Dynamic pressure sensor, has openings at ends of channels arranged so that vertical axis passes through opening surface at angle to direction of flow Download PDFInfo
- Publication number
- DE202004005482U1 DE202004005482U1 DE200420005482 DE202004005482U DE202004005482U1 DE 202004005482 U1 DE202004005482 U1 DE 202004005482U1 DE 200420005482 DE200420005482 DE 200420005482 DE 202004005482 U DE202004005482 U DE 202004005482U DE 202004005482 U1 DE202004005482 U1 DE 202004005482U1
- Authority
- DE
- Germany
- Prior art keywords
- openings
- dynamic pressure
- channels
- differential pressure
- 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 - Lifetime
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
- G01F1/46—Pitot tubes
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft eine Staudrucksonde nach den Merkmalen des Oberbegriffs von Anspruch 1.The The invention relates to a dynamic pressure probe according to the features of the preamble of claim 1.
Eine
derartige Staudrucksonde ist beispielsweise aus der
Bei der bekannten Staudrucksonde besteht der Nachteil, dass die Öffnungen, welche über einen Kanal mit dem eigentlichen Druckaufnehmer verbunden sind teilweise entgegen der Strömungsrichtung zeigen und daher Fremdstoffe, die mit der Strömung transportiert werden in diese Öffnungen gelangen können, wodurch der Messwert verfälscht werden kann.at the known dynamic pressure probe has the disadvantage that the openings, which over a channel connected to the actual pressure transducer are partially show against the flow direction and therefore foreign substances that are transported with the flow in these openings can reach, whereby the measured value falsifies can be.
Aufgrund der Anordnung der Öffnungen im Seitenbereich des Kanals, welcher den Druck zum eigentlichen Druckaufnehmer weiterleitet, ist es äusserst unwahrscheinlich, dass die Fremdstoffe von selbst wieder aus dem Kanal gelangen. Es ist vielmehr sehr wahrscheinlich, dass die Fremdstoffe auf Dauer im Kanal verbleiben und permanent das Messergebnis verfälschen.by virtue of the arrangement of the openings in the side area of the channel, which is the pressure to the actual Pressure sensor, it is extremely unlikely that the foreign matter will come out of the channel by itself. It is rather, it is very likely that the foreign substances will persist in the long term Channel remain and permanently distort the measurement result.
Es ist Aufgabe der vorliegenden Erfindung, eine Staudrucksonde zu schaffen, bei welcher die Wahrscheinlichkeit, dass Fremdstoffe in die Öffnungen gelangen grundsätzlich durch konstruktive Maßnahmen reduziert ist und ebenfalls durch konstruktive Maßnahmen eine Möglichkeit geschaffen wird, dass diese Fremdstoffe die Staudrucksonde auf einfachem Wege wieder verlassen können.It The object of the present invention is to provide a dynamic pressure probe at which the probability of foreign matter in the openings arrive basically through constructive measures is reduced and also by constructive measures a possibility is created that these impurities the pitot tube on a simple Leave ways again.
Diese Aufgabe ist erfindungsgemäß gelöst durch die kennzeichnenden Merkmale des Anspruchs 1.These The object is achieved by the characterizing features of claim 1.
Die Unteransprüche betreffen weiterbildungen und/oder spezielle Ausgestaltungen der Erfindung.The under claims relate to further education and / or special embodiments of Invention.
Die Überlegungen, die zum Entstehen der vorliegenden Erfindung führten gingen davon aus, dass der Druck in jede Richtung wirkt und zum Erfassen des Staudruckes die Öffnung, welche den Staudruck über einen Kanal zum eigentlichen Druckaufnehmer weiterleitet nicht in Richtung der Strömung zeigen muß. Es ist daher ausreichend, wenn dieses Öffnung in der Nähe einer Staufläche angeordnet ist.The considerations, which led to the emergence of the present invention assumed that the pressure acts in each direction and to detect the dynamic pressure the opening, which the dynamic pressure over a channel to the actual pressure transducer does not forward in Show the direction of the flow got to. It is therefore sufficient if this opening near a storage space is arranged.
Nachfolgend wird die Erfindung anhand von 2 Zeichnungen näher erläutert.following The invention will be explained in more detail with reference to 2 drawings.
Die
Am
unteren Ende der Staudrucksonde
Die Strömungsrichtung verläuft senkrecht auf die Zeichnungsebene.The flow direction extends perpendicular to the plane of the drawing.
Die
Die
Einbaulage des Staudruckmessers erfolgt vorzugsweise so, dass die
Staudrucksonde 3 im wesentlichen senkrecht nach unten zeigt. Sofern
von der Strömung
mittransportierte Fremdstoffe auf die Staudrucksonde
Der Durchmesser der Kanäle ist so bemessen, dass keine Kapillarwirkung bei flüssigen Fremdstoffen entstehen kann.Of the Diameter of the channels is such that no capillary action on liquid foreign matter can arise.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420005482 DE202004005482U1 (en) | 2004-04-02 | 2004-04-02 | Dynamic pressure sensor, has openings at ends of channels arranged so that vertical axis passes through opening surface at angle to direction of flow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420005482 DE202004005482U1 (en) | 2004-04-02 | 2004-04-02 | Dynamic pressure sensor, has openings at ends of channels arranged so that vertical axis passes through opening surface at angle to direction of flow |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004005482U1 true DE202004005482U1 (en) | 2005-08-11 |
Family
ID=34854256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200420005482 Expired - Lifetime DE202004005482U1 (en) | 2004-04-02 | 2004-04-02 | Dynamic pressure sensor, has openings at ends of channels arranged so that vertical axis passes through opening surface at angle to direction of flow |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202004005482U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009409A1 (en) * | 2005-07-14 | 2007-01-25 | Systec Controls Mess- Und Regelungstechnik Gmbh | Ram pressure probe |
WO2018184811A1 (en) * | 2017-04-05 | 2018-10-11 | Robert Bosch Gmbh | Sensor element for acquiring at least one property of a fluid medium |
-
2004
- 2004-04-02 DE DE200420005482 patent/DE202004005482U1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009409A1 (en) * | 2005-07-14 | 2007-01-25 | Systec Controls Mess- Und Regelungstechnik Gmbh | Ram pressure probe |
WO2007006297A3 (en) * | 2005-07-14 | 2007-08-02 | Systec Controls Mess Und Regel | Sensor unit for fluids |
WO2018184811A1 (en) * | 2017-04-05 | 2018-10-11 | Robert Bosch Gmbh | Sensor element for acquiring at least one property of a fluid medium |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20050915 |
|
R150 | Term of protection extended to 6 years |
Effective date: 20070522 |
|
R151 | Term of protection extended to 8 years |
Effective date: 20100507 |
|
R152 | Term of protection extended to 10 years |
Effective date: 20120502 |
|
R071 | Expiry of right |