DE102008052189A1 - Force measurement method for axial bearing at rotor of exhaust gas turbocharger, involves coupling evaluation device with elongation measuring circuit, where evaluation device determines axial forces affecting at modified axial bearing - Google Patents
Force measurement method for axial bearing at rotor of exhaust gas turbocharger, involves coupling evaluation device with elongation measuring circuit, where evaluation device determines axial forces affecting at modified axial bearing Download PDFInfo
- Publication number
- DE102008052189A1 DE102008052189A1 DE102008052189A DE102008052189A DE102008052189A1 DE 102008052189 A1 DE102008052189 A1 DE 102008052189A1 DE 102008052189 A DE102008052189 A DE 102008052189A DE 102008052189 A DE102008052189 A DE 102008052189A DE 102008052189 A1 DE102008052189 A1 DE 102008052189A1
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- Germany
- Prior art keywords
- thrust bearing
- bearing
- strain gauge
- axial
- evaluation device
- 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.)
- Withdrawn
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 12
- 230000008878 coupling Effects 0.000 title description 2
- 238000010168 coupling process Methods 0.000 title description 2
- 238000005859 coupling reaction Methods 0.000 title description 2
- 238000000691 measurement method Methods 0.000 title 1
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 description 8
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/047—Sliding-contact bearings for exclusively rotary movement for axial load only with fixed wedges to generate hydrodynamic pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
- F16C2360/24—Turbochargers
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Axiallagerkraftmessung an einem Rotor einer rotierenden Maschine, insbesondere eines Abgasturboladers.The The present invention relates to a method and a device for axial bearing force measurement on a rotor of a rotating machine, in particular an exhaust gas turbocharger.
Für die Auslegung von rotierenden Maschinen, insbesondere von Abgasturboladern, ist es erforderlich, die am Rotor auftretenden Axialkräfte zu kennen. Erst bei Kenntnis der im Betrieb tatsächlich auftretenden Axialbelastungen können die Axiallager optimal adaptiert und ausgelegt werden.For the design of rotating machinery, in particular exhaust gas turbochargers, It is necessary, the axial forces occurring on the rotor to know. Only with knowledge of the actually occurring during operation Axial loads can be optimally adapted to the axial bearings and be designed.
Aus
der
Nachteilig beim bekannten Verfahren ist der Umstand, dass die auftretenden Axialkräfte am Ort des zusätzlichen Axiallagers, also axial versetzt gemessen werden und sich dadurch von den tatsächlichen Kräften unterscheiden können, die am eigentlichen in Abhängigkeit der auftretenden Kräfte auszulegenden Axiallager der Maschine auftreten können bzw. die Rotordynamik sowie das Betriebsverhalten der rotierenden Maschine negativ beeinflussen können.adversely the known method is the fact that the occurring Axial forces at the location of the additional thrust bearing, So be measured axially offset and thereby from the actual Can distinguish forces that are at the actual depending on the forces to be interpreted Axial bearings of the machine can occur or the rotor dynamics and negatively affect the operating behavior of the rotating machine can.
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für ein Verfahren bzw. für eine Vorrichtung der eingangs genannten Art eine verbesserte oder zumindest eine andere Ausführungsform anzugeben.The The present invention addresses the problem of for a method or a device of initially mentioned type an improved or at least another Specify embodiment.
Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This Problem is inventively by the objects of the independent claims. advantageous Embodiments are the subject of the dependent Claims.
Die Erfindung beruht auf dem allgemeinen Gedanken, in der rotierenden Maschine ein Axiallager, dessen Axiallagerkräfte gemessen werden sollen, durch ein modifiziertes Axiallager zu ersetzen, in das eine Dehnmessschaltung integriert ist. Durch diesen Vorschlag ist es möglich, die auftretenden Axiallagerkräfte unmittelbar in dem Lager zu messen, das in Abhängigkeit der auftretenden Axiallagerkräfte ausgelegt werden soll. Hierdurch besitzen die ermittelten Lagerkräfte eine erhöhte Aussagekraft. Die Qualität der damit durchgeführten Untersuchungen, insbesondere zur Auslegung des jeweiligen Axiallagers, lässt sich dadurch verbessern.The Invention is based on the general idea, in the rotating Machine a thrust bearing whose axial bearing forces measured to be replaced by a modified thrust bearing, in the a strain gauge is integrated. By this proposal is it is possible, the occurring thrust bearing forces to measure directly in the warehouse, depending on the occurring axial bearing forces to be interpreted. As a result, the determined bearing forces have an increased Expressiveness. The quality of it performed Investigations, in particular for the design of the respective thrust bearing, can be improved.
Realisieren lässt sich eine derartige Dehnmessschaltung mit wenigstens einem Dehnmesselement, das auf geeignete Weise am modifizierten Axiallager angeordnet ist. Über die auftretenden Biegeverformungen lassen sich dann die wirkenden Kräfte ermitteln. Derartige Dehnmessschaltungen arbeiten sehr robust und zuverlässig. Bevorzugt umfassen die Dehnmessschaltungen mehrere Dehnmesselemente, die auf geeignete Weise miteinander verschaltet und am modifizierten Axiallager angeordnet sind.realize can be such a strain gauge circuit with at least a strain gauge which is suitably modified Thrust bearing is arranged. About the occurring bending deformations then the forces can be determined. such Dehnmessschaltungen work very robust and reliable. Preferably, the strain gauges comprise a plurality of strain gauges, which are appropriately interconnected and modified Thrust bearings are arranged.
Entsprechend einer vorteilhaften Ausführungsform kann das modifizierte Axiallager einen ringförmigen Lagerbereich aufweisen, an dem sich im Betrieb der Maschine die Axiallagerkräfte abstützen. Koaxial zu diesem Lagerbereich ist ein ringförmiger, den Lagerbereich umschließender Haltebereich vorgesehen, mit dem das Axiallager am Stator befestigt werden kann. Radial zwischen dem Lagerbereich und dem Haltebereich ist ein dazu koaxial angeordneter, ringförmiger Verformungsbereich vorgesehen, der im Vergleich zum Lagerbereich und zum Haltebereich eine reduzierte axiale Wandstärke aufweist. Die Dehnmesselemente sind nun in diesem Verformungsbereich angeordnet. Durch die reduzierte Wandstärke im Verformungsbereich findet die Biegeverformung des Axiallagers aufgrund der daran angreifenden Axialkräfte bevorzugt im Verformungsbereich statt. Diesen Biegeverformungen folgen die Dehnmesselemente und können dadurch über ihre Verschaltung entsprechende Messsignale liefern. Durch die Konzentration der Biegevorgänge in den Verformungsbereich, kann die Empfindlichkeit der Axialkraftmessung gesteigert werden, da bereits kleinere Kräfte zu messbaren Biegeverformungen im Verformungsbereich führen.Corresponding In an advantageous embodiment, the modified Thrust bearing have an annular bearing area, at in which the axial bearing forces are supported during operation of the machine. Coaxial to this storage area is an annular, the Warehouse area enclosing holding area provided with the thrust bearing can be attached to the stator. Radial between the storage area and the holding area is a coaxial arranged, annular deformation range provided in comparison to the storage area and the holding area a reduced axial wall thickness having. The strain gauges are now in this deformation range arranged. Due to the reduced wall thickness in the deformation area finds the bending deformation of the thrust bearing due to attacking it Axial forces preferably in the deformation area instead. this Bending deformations follow the strain gauges and can thereby via their interconnection corresponding measurement signals deliver. By concentrating the bending processes in the deformation area, the sensitivity of the axial force measurement can be increased, since even smaller forces lead to measurable bending deformations lead in the deformation area.
Besonders vorteilhaft ist eine Weiterbildung, bei welcher im Verformungsbereich Stege ausgebildet sind, die bezüglich der Rotationsachse des Rotors radial ausgerichtet und in Umfangsrichtung voneinander beabstandet angeordnet sind. Die axiale Wandstärke dieser Stege ist dabei kleiner als die Wandstärke des Lagerbereichs und kleiner als die Wandstärke des Haltebereichs. Außerdem ist die axiale Wandstärke der Stege größer als die Wandstärke von Ringsegmenten des Verformungsbereichs, die in der Umfangsrichtung die benachbarten Stege miteinander verbinden. Auf diese Weise werden die Biegeverformungen aufgrund von Axialkräften auf die Stege konzentriert, da über die Stege ein vergleichsweise großer Anteil der Axialkräfte übertragen wird. Bevorzugt werden die Dehnmesselemente nun genau an diesen Stegen angebracht. Die vorgeschlagene Maßnahme führt zu einer verbesserten Genauigkeit der Axialkraftmessung.Especially advantageous is a development in which in the deformation region Webs are formed, with respect to the axis of rotation of the rotor radially aligned and circumferentially from each other spaced apart. The axial wall thickness of this Webs is smaller than the wall thickness of the storage area and smaller than the wall thickness of the holding area. Furthermore is the axial wall thickness of the webs larger as the wall thickness of ring segments of the deformation area, which connect the adjacent webs in the circumferential direction with each other. In this way, the bending deformations due to axial forces concentrated on the bridges, because of the bridges a comparatively transferred a large proportion of the axial forces becomes. Preferably, the strain gauges are now exactly to this Bars attached. The proposed action leads to an improved accuracy of Axialkraftmessung.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the accompanying Figu description with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It it is understood that the above and the following yet to be explained features not only in each case specified combination, but also in other combinations or can be used in isolation, without the scope of the present To leave invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.preferred Embodiments of the invention are in the drawings and will become more apparent in the following description explained, wherein the same reference numerals to the same or similar or functionally identical components relate.
Es zeigen, jeweils schematisch,It show, in each case schematically,
Entsprechend
Der
Rotor
Um
nun die im Betrieb am Axiallager
Entsprechend
Im
gezeigten Beispiel sind im Verformungsbereich
Entsprechend
einer besonders vorteilhaften Ausführungsform, kann die
jeweilige Dehnmessschaltung
Die
Dehnmesselemente
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10219430 A1 [0003] - DE 10219430 A1 [0003]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008052189A DE102008052189A1 (en) | 2008-10-17 | 2008-10-17 | Force measurement method for axial bearing at rotor of exhaust gas turbocharger, involves coupling evaluation device with elongation measuring circuit, where evaluation device determines axial forces affecting at modified axial bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008052189A DE102008052189A1 (en) | 2008-10-17 | 2008-10-17 | Force measurement method for axial bearing at rotor of exhaust gas turbocharger, involves coupling evaluation device with elongation measuring circuit, where evaluation device determines axial forces affecting at modified axial bearing |
Publications (1)
Publication Number | Publication Date |
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DE102008052189A1 true DE102008052189A1 (en) | 2010-06-17 |
Family
ID=42168234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102008052189A Withdrawn DE102008052189A1 (en) | 2008-10-17 | 2008-10-17 | Force measurement method for axial bearing at rotor of exhaust gas turbocharger, involves coupling evaluation device with elongation measuring circuit, where evaluation device determines axial forces affecting at modified axial bearing |
Country Status (1)
Country | Link |
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DE (1) | DE102008052189A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100089057A1 (en) * | 2007-04-24 | 2010-04-15 | Continental Automotive Gmbh | Axial Bearing, in Particular for a Turbocharger |
US8051660B2 (en) * | 2007-12-21 | 2011-11-08 | Mahle International Gmbh | Charging device |
CN105102950A (en) * | 2013-05-03 | 2015-11-25 | 尤尼弗莱克斯-液压有限责任公司 | Force-measuring device |
US10184355B2 (en) * | 2016-05-04 | 2019-01-22 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Supercharging device |
CN109724726A (en) * | 2019-02-20 | 2019-05-07 | 凤城市时代龙增压器制造有限公司 | A kind of turbocharger axial direction force test system and test method |
CN110500175A (en) * | 2019-08-07 | 2019-11-26 | 中国北方发动机研究所(天津) | Turbocharger axial direction power measurement supercharger arrangement, shaft coupling and measurement method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0355656B1 (en) * | 1988-08-15 | 1994-02-16 | Praxair Technology, Inc. | Bearing support system |
DE10219430A1 (en) | 2002-05-02 | 2003-11-20 | Audi Ag | Turbocharger axial bearing force measurement method in which the operational bearing of the turbocharger shaft is removed and replaced with a measurement bearing so that the force acting on bearing measurement arms can be recorded |
JP2004144596A (en) * | 2002-10-24 | 2004-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Apparatus for detecting thrust load on slide bearing |
-
2008
- 2008-10-17 DE DE102008052189A patent/DE102008052189A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0355656B1 (en) * | 1988-08-15 | 1994-02-16 | Praxair Technology, Inc. | Bearing support system |
DE10219430A1 (en) | 2002-05-02 | 2003-11-20 | Audi Ag | Turbocharger axial bearing force measurement method in which the operational bearing of the turbocharger shaft is removed and replaced with a measurement bearing so that the force acting on bearing measurement arms can be recorded |
JP2004144596A (en) * | 2002-10-24 | 2004-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Apparatus for detecting thrust load on slide bearing |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100089057A1 (en) * | 2007-04-24 | 2010-04-15 | Continental Automotive Gmbh | Axial Bearing, in Particular for a Turbocharger |
US8240921B2 (en) * | 2007-04-24 | 2012-08-14 | Continental Automotive Gmbh | Axial bearing for a turbocharger |
US8051660B2 (en) * | 2007-12-21 | 2011-11-08 | Mahle International Gmbh | Charging device |
CN105102950A (en) * | 2013-05-03 | 2015-11-25 | 尤尼弗莱克斯-液压有限责任公司 | Force-measuring device |
CN105102950B (en) * | 2013-05-03 | 2017-07-28 | 尤尼弗莱克斯-液压有限责任公司 | Force measuring device |
US10184355B2 (en) * | 2016-05-04 | 2019-01-22 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Supercharging device |
CN109724726A (en) * | 2019-02-20 | 2019-05-07 | 凤城市时代龙增压器制造有限公司 | A kind of turbocharger axial direction force test system and test method |
CN109724726B (en) * | 2019-02-20 | 2024-03-29 | 凤城市时代龙增压器制造有限公司 | Turbocharger axial force testing system and testing method |
CN110500175A (en) * | 2019-08-07 | 2019-11-26 | 中国北方发动机研究所(天津) | Turbocharger axial direction power measurement supercharger arrangement, shaft coupling and measurement method |
CN110500175B (en) * | 2019-08-07 | 2020-09-08 | 中国北方发动机研究所(天津) | Supercharger device for measuring axial force of turbocharger, coupling and measuring method |
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Owner name: BMTS TECHNOLOGY GMBH & CO. KG, DE Free format text: FORMER OWNER: BOSCH MAHLE TURBO SYSTEMS GMBH & CO. KG, 70376 STUTTGART, DE |
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Representative=s name: BRP RENAUD UND PARTNER MBB RECHTSANWAELTE PATE, DE |
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