DE10340690A1 - Sensor for measuring gas pressure in air inlet in front of compressor stage of a driving mechanism of an aircraft jet engine has pressure measuring line for introducing gas from chamber, and surrounded by water-repelling sensor core - Google Patents
Sensor for measuring gas pressure in air inlet in front of compressor stage of a driving mechanism of an aircraft jet engine has pressure measuring line for introducing gas from chamber, and surrounded by water-repelling sensor core Download PDFInfo
- Publication number
- DE10340690A1 DE10340690A1 DE2003140690 DE10340690A DE10340690A1 DE 10340690 A1 DE10340690 A1 DE 10340690A1 DE 2003140690 DE2003140690 DE 2003140690 DE 10340690 A DE10340690 A DE 10340690A DE 10340690 A1 DE10340690 A1 DE 10340690A1
- Authority
- DE
- Germany
- Prior art keywords
- probe
- pressure
- water
- measuring line
- pressure 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.)
- Ceased
Links
- 239000000523 sample Substances 0.000 claims description 78
- 239000005871 repellent Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 5
- 240000002853 Nelumbo nucifera Species 0.000 claims description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 3
- 229910001200 Ferrotitanium Inorganic materials 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 238000009530 blood pressure measurement Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0654—Protection against aggressive medium in general against moisture or humidity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D43/00—Arrangements or adaptations of instruments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft eine Sonde zur Messung des Drucks eines Gases in einem Raum, insbesondere in einem Lufteinlauf vor einer Verdichterstufe eines Strahltriebwerks.The The invention relates to a probe for measuring the pressure of a gas in a room, in particular in an air inlet in front of a compressor stage a jet engine.
Eine
Sonde nach dem Oberbegriff des Anspruchs 1 ist aus
Der Erfindung liegt die Aufgabe zugrunde, eine Druckmesssonde nach dem Oberbegriff des Anspruchs 1 zu schaffen, die keine Beheizung aufweist und die dennoch auch dann eine fehlerfreie Druckmessung ermöglicht, wenn das Gas, dessen Druck zu messen ist, feucht und kalt ist und daher eine Vereisung sowohl der Messbohrung als auch der Druckmessleitung droht.Of the Invention is based on the object, a pressure measuring probe after the To provide preamble of claim 1, which has no heating and which nevertheless allows error-free pressure measurement, when the gas whose pressure is to be measured is moist and cold and therefore icing both the measuring bore and the pressure measuring line threatening.
Die Aufgabe wird durch eine Sonde nach Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.The The object is achieved by a probe according to claim 1. advantageous Embodiments are specified in the subclaims.
Die Erfindung sieht vor, dass der Sondenkern wasserabweisend ist. Die wasserabweisende Wirkung wirkt sich mindestens auf die durch den Sondenkern gebildete Wand der Druckmessleitung und die Umgebung des in den Raum mündenden Endes der Druckmessleitung aus. Wasser, das sich als Feuchtigkeit im Gas befindet, kann wegen der wasserabweisenden Gestaltung nicht zu einer vollständigen Benetzung der Druckmessleitung in Form einer Schicht und Blockage der Messleitung führen. Aufgrund der wasserabweisenden Gestaltung vermögen Wassertropfen die Wand der Druckmessleitung nicht zu benetzen, vielmehr bildet das kondensierte Wasser Perlen auf der Wand, welche abtropfen.The Invention provides that the probe core is water repellent. The water-repellent effect affects at least that through the probe core formed wall of the pressure measuring line and the environment of the in the Opening up the room End of the pressure measuring line off. Water that turns out to be moisture in the gas, can not because of the water-repellent design to a complete Wetting of the pressure measuring line in the form of a layer and blockage lead the measuring line. Due to the water-repellent design, water droplets are able to fill the wall not to wet the pressure measuring line, but rather forms the condensed Water beads on the wall, which drip off.
Zudem verhindert die erfindungsgemäße Druckmesssonde, dass sich auf der Stirnseite des Sondenkerns zum Raum hin eine Eisfläche aufbauen kann, womit ein Verschließen der Messbohrung durch Eis unterbunden wird.moreover prevents the pressure measuring probe according to the invention that an ice surface can build up on the front side of the probe core towards the room, what a closure the measuring bore is prevented by ice.
Weiterhin sieht die Erfindung eine bestimmte Positionierung der Sonde vor. Die Sonde ist dabei so positioniert, dass das in den Raum mündende Ende der Druckmessleitung tiefer liegt als die anderen Bereiche der Druckmessleitung. Das kondensierte Wasser tropft aufgrund der Schwerkraft aus der Druckmessleitung nach unten ab, bevor diese vereist oder blockiert und dadurch die Druckmessung beeinträchtigt oder verfälscht.Farther the invention provides a specific positioning of the probe. The probe is positioned so that the opening into the room end of Pressure measuring line is lower than the other areas of the pressure measuring line. The condensed water drips from gravity due to gravity Lower pressure measuring line before it ices or blocks and thereby affect or distort the pressure measurement.
Durch die erfindungsgemäße Positionierung der Sonde und durch die wasserabweisende Gestaltung des Sondenkerns erübrigt sich die Beheizung der Druckmessleitung. Damit wird das Gewicht reduziert und eine Stromversorgung für die Beheizung sowie eine Einrichtung, die diese Beheizung überwacht und Fehlfunktionen der Beheizung aufzeichnet und/oder meldet, überflüssig.By the positioning of the invention Probe and by the water-repellent design of the probe core Needless the heating of the pressure measuring line. This will be the weight reduced and a power supply for heating as well Device that monitors this heating and malfunctions the heating records and / or reports, superfluous.
Die erfindungsgemäße Sonde lässt sich sowohl dafür verwenden, den Innendruck in einem von einem Gehäuse umgebenden Raum zu messen, als auch zur Messung des Außendrucks, z. B. des Luftdrucks an einer bestimmten Stelle. Das Gehäuse kann hierbei den Raum ganz oder teilweise umschließen. Der Raum ist beispielsweise ein Lufteinlauf einer Gasturbine (Anspruch 11), insbesondere ein Lufteinlauf vor einem Niederdruck-Verdichter.The inventive probe let yourself both for that use to measure the internal pressure in a space surrounding a housing, as well as for measuring the external pressure, z. B. the air pressure at a certain point. The housing can enclose the room completely or partially. The room is for example an air inlet of a gas turbine (claim 11), in particular a Air intake before a low-pressure compressor.
Vorzugsweise wird der Sondenkern aus wasserabweisendem Kunststoff, z. B. Teflon, hergestellt (Anspruch 3, Anspruch 4).Preferably is the probe core made of water-repellent plastic, z. B. Teflon, prepared (claim 3, claim 4).
Die Ausgestaltung nach Anspruch 5 sieht zusätzlich einen Sondenkopf vor, der wenigstens einen Teil des Sondenkerns umgibt. Dies ist vor allem dann von Vorteil, wenn der Sondenkern über den Sondenkopf am Gehäuse befestigt wird. Dabei befindet sich der Sondenkern überwiegend in der Gehäusewandung und wird außerhalb dieser zumindest teilweise, insbesondere in Umfangsrichtung, vom Sondenkopf kraftschlüssig umgeben. Der Sondenkopf ist mit dem Gehäuse verbunden, insbesondere verschraubt und fixiert somit auch den Sondenkern. Zudem kann der Sondenkopf in dieser Konstellation die Gasleitungen aufnehmen, die das entnommene Gas bzw. den entnommenen Gasdruck zur angeschlossenen Messeinrichtung (Drucksensoren) weiterleiten. Dieser Sondenkopf ist mit einem wasserabweisenden Material beschichtet. Dadurch vermeidet er, dass sich Wasser auf ihm niederschlägt, vereist, den Sondenkern abkühlt und dadurch die Druckmessung beeinträchtigt oder ver fälscht. Zudem wird der Innenraum des Sondenkopfes dadurch nicht weiter abgekühlt, so dass auch im Innern befindliches kondensiertes Wasser nicht gefriert.The Embodiment according to claim 5 additionally provides a probe head, which surrounds at least a part of the probe core. This is above all then advantageous if the probe core attached to the housing via the probe head becomes. The probe core is located predominantly in the housing wall and will be outside this at least partially, in particular in the circumferential direction of the Probe head non-positive surround. The probe head is connected to the housing, in particular screwed and fixed thus also the probe core. In addition, the probe head in this constellation, take up the gas pipes that removed the Gas or the withdrawn gas pressure to the connected measuring device Forward (pressure sensors). This probe head is water repellent Coated material. By doing so, he avoids getting water on knock him down, ices, cooling the probe core and thereby affect the pressure measurement or ver falsified. moreover the interior of the probe head is thereby not further cooled, so that even condensed water inside does not freeze.
Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der beiliegenden Zeichnungen näher beschrieben. Dabei zeigen:in the The following will be an embodiment of Invention described in more detail with reference to the accompanying drawings. Showing:
Das
Ausführungsbeispiel
bezieht sich auf eine Sonde in einem Lufteinlauf vor einem Niederdruck-Verdichter
einer Gasturbine. Der Lufteinlauf
In
den Lufteinlauf
Die
Sonden
In
Der
Sondenkern
Der
die Druckmessleitung
Im
vorliegenden Beispiel verlaufen die Druckmessleitungen
- 1010
- Lufteinlauf eines Niederdruck-Verdichters als Gehäuseair inlet a low-pressure compressor as a housing
- 20.1, 20.220.1, 20.2
- DruckmesssondenPressure probes
- 3030
- DruckmessleitungPressure gauge line
- 4040
- Sondenkernprobe core
- 5050
- Sondenkopfprobe head
- 6060
-
unteres
Ende der Druckmessleitung
30 lower end of the pressure measuring line30 - 7070
-
oberes
Ende der Druckmessleitung
30 Upper end of the pressure measuring line30 - 8080
- weitere DruckmessleitungFurther Pressure gauge line
- 80.180.1
- Druckschläuchepressure hoses
- 9090
-
Oberfläche des
Lufteinlaufs
10 Surface of the air inlet10 - 100100
-
Vom
Lufteinlauf
10 umgebener RaumFrom the air inlet10 surrounded space - 110110
- Schraubenscrew
- 120120
- Muttern oder Gewindeeinsatz (selbstsichernd)nuts or threaded insert (self-locking)
- 200200
- Regeleinheit (elektronisch)control unit (Electronically)
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003140690 DE10340690A1 (en) | 2003-09-04 | 2003-09-04 | Sensor for measuring gas pressure in air inlet in front of compressor stage of a driving mechanism of an aircraft jet engine has pressure measuring line for introducing gas from chamber, and surrounded by water-repelling sensor core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003140690 DE10340690A1 (en) | 2003-09-04 | 2003-09-04 | Sensor for measuring gas pressure in air inlet in front of compressor stage of a driving mechanism of an aircraft jet engine has pressure measuring line for introducing gas from chamber, and surrounded by water-repelling sensor core |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10340690A1 true DE10340690A1 (en) | 2005-04-14 |
Family
ID=34305586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003140690 Ceased DE10340690A1 (en) | 2003-09-04 | 2003-09-04 | Sensor for measuring gas pressure in air inlet in front of compressor stage of a driving mechanism of an aircraft jet engine has pressure measuring line for introducing gas from chamber, and surrounded by water-repelling sensor core |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10340690A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008104189A1 (en) * | 2007-02-27 | 2008-09-04 | Daimler Ag | Process gas plant with a sensor for measuring a measured variable of a process gas |
DE10346626B4 (en) * | 2003-10-08 | 2013-02-21 | Robert Bosch Gmbh | Pressure sensor housing |
DE102012000051B4 (en) * | 2011-01-10 | 2016-08-04 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Pressure sensor for use in fuel cell systems |
-
2003
- 2003-09-04 DE DE2003140690 patent/DE10340690A1/en not_active Ceased
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10346626B4 (en) * | 2003-10-08 | 2013-02-21 | Robert Bosch Gmbh | Pressure sensor housing |
WO2008104189A1 (en) * | 2007-02-27 | 2008-09-04 | Daimler Ag | Process gas plant with a sensor for measuring a measured variable of a process gas |
DE102012000051B4 (en) * | 2011-01-10 | 2016-08-04 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Pressure sensor for use in fuel cell systems |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |