EP2733311B1 - Nozzle ring - Google Patents
Nozzle ring Download PDFInfo
- Publication number
- EP2733311B1 EP2733311B1 EP13192993.7A EP13192993A EP2733311B1 EP 2733311 B1 EP2733311 B1 EP 2733311B1 EP 13192993 A EP13192993 A EP 13192993A EP 2733311 B1 EP2733311 B1 EP 2733311B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- fastening ring
- guide vanes
- fastening
- nozzle
- 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.)
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- 238000000034 method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005495 investment casting Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
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- 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
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
- F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
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- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
Definitions
- the invention relates to the field of turbomachines, such as turbocharger for supercharged internal combustion engines.
- nozzle ring for such a turbomachine, such as for the turbine of an exhaust gas turbocharger, such as in US 2002 / 0094284A1 or WO 2005 / 031120A1 disclosed.
- Turbochargers are used to increase the performance of reciprocating engines. So that the turbine can be operated as efficiently as possible, the exhaust gas in front of the turbine in a row guide vanes of a guide device, also called nozzle ring, deflected.
- the nozzle ring comprises two mounting rings, which limit the flow channel on both sides, and a plurality of guide vanes, which are depending on the application in a certain angle to the flow and also have a different length.
- the flow guidance is generally very good, but a separate casting model must be made for each blade angle position.
- the flexibility for additional angularity or vane spacing is limited, as each time a change is made, a new casting model must be made, which is both expensive and results in a very long lead time.
- vanes are welded or soldered into individual rings.
- flow guidance is optimal in this process, new rings have to be provided for each angular position, but the costs are slightly lower than with the investment casting process.
- sheets are welded or soldered between the fastening rings.
- the shaped vanes are in formations in the Fastening rings arranged and welded or soldered therein.
- the flow guidance due to the sheet metal profiles is significantly worse than in the first two variants.
- the walls are extremely thin and thus prone to erosion by exhaust particles.
- jet rings of two mounting rings and a variety of identical blades together whereby the flexibility in production is significantly improved.
- nozzle rings In order for nozzle rings to be able to cover the main functions of blade position and blade length (distances of the two attachment rings), but also include additional functions such as attachment of the entire nozzle ring in the turbocharger or sealing against leakage flow, different or at least differently finished output components are often used.
- the object of the present invention is to provide an assembled nozzle ring with the flow guidance of a nozzle ring produced by precision casting, which modularly can be composed of a few individual elements for different blade positions and blade length.
- a nozzle ring wherein the guide vanes on a front side has a bolt, which is received in a designated hole in a first mounting ring receiving.
- the angular position of the blade is set at the other end by a corresponding profile recess in the mounting ring, which corresponds to either the entire surface of the front side or just the profile of the projections on the front side in the second mounting ring and permanently fixed by the assembly of the blades.
- the bolts on the first end face have the advantage that the first fastening ring requires only simple holes for receiving the blades. As a result, this fastening ring can also have more complex shapes without the Production of this ring is made difficult by profile cutouts. For all blade angle positions, only one ring with always the same holes in the pivot point of the blade can be used.
- the channel width and thus the effective blade length effective in the flow channel is set by the profile-cut second fastening ring.
- the setting can be done via one or more paragraphs on the vane, or by means of a spacer tool during the joining of the contact points.
- the pivot point of the individual guide vanes may vary depending on the embodiment, therefore, depending on the embodiment, the bolt may be arranged at different locations along the end face of the guide vane.
- the guide vanes of the nozzle ring can be produced with a variable profile (shape, cross section and angular position) in investment casting, powder metallurgy or fine forging.
- these can be materially connected to each other, for example, by welding or soldering. In any case, they are connected to each other in such a way that the guide vanes and mounting rings are immovable to each other after joining.
- the guide vanes may also be positively or non-positively attached to the mounting rings, for example by a snap device or a press-fitting.
- the individual guide vanes are manufactured by precision casting, they can have any desired geometry, resulting in an optimal flow guidance in the completely assembled nozzle ring, which corresponds to the flow guidance of the nozzle ring produced in one piece using the precision casting method.
- the guide vanes can be cast as hollow profiles, whereby the total weight of the nozzle ring can be reduced. This makes it easier and thus easier to assemble and disassemble.
- the transient stresses during operation with hot air flows are also positively influenced by the hollow profiles of the guide vanes.
- the inventive, composed of individual parts nozzle ring is considerably cheaper to produce than a comparable, produced by precision casting, one-piece nozzle ring.
- the cost advantages result from the many times simplified casting or forging work.
- the additional expense of providing and prefabricating the attachment rings is further reduced by using the first attachment ring with bores to receive the bolts for multiple embodiments of nozzle rings having different angular positions.
- the inventive nozzle ring is composed of various individual parts, different materials can be used. This further contributes to the reduction in manufacturing costs compared to a nozzle ring produced in one piece by precision casting. For example, only the vanes of a higher quality material (eg, a nickel base alloy) are cast or forged while the mounting rings are made of a low cost material (eg, CrNi steel). Of course, the two mounting rings can also be made of a different material, since they have to withstand different thermal or mechanical loads.
- a higher quality material eg, a nickel base alloy
- the mounting rings are made of a low cost material (eg, CrNi steel).
- the two mounting rings can also be made of a different material, since they have to withstand different thermal or mechanical loads.
- Another advantage of the present invention made of individual vanes and separate mounting rings nozzle ring is the fact that with a single blade profile nozzle rings can be realized with different blade positions. For the production of the mounting rings, this results in only a little significant additional effort, since only the template or the program for cutting out the openings in the mounting ring must be changed.
- the nozzle ring produced in one piece using the precision casting process requires a separate casting model for each blade position, which must be custom-made. In an exhaust gas turbocharger of a certain size, for example, up to 10 different graduations (angular position of the profiles) are required.
- Another advantage of the present invention made of individual vanes and separate mounting rings nozzle ring is the fact that can be produced without appreciable additional effort instead of a complete nozzle ring and individual segments.
- a circumferentially divided into two or more segments nozzle ring has an improved transient behavior during heating and cooling.
- the individual parts of the segmented nozzle ring even without hollow profiles, significantly lighter than a whole, one-piece nozzle ring, which is advantageous for assembly and disassembly.
- positioning elements can be provided on the fastening rings. These may be formed as projections or as embedded in the mounting rings grooves.
- nozzle ring according to the invention listed hereinafter are described with regard to use in a radial turbine of an exhaust gas turbocharger.
- inventive nozzle rings are also suitable for other turbomachines, such as pumps, compressors, gas turbines, etc.
- Fig. 13 shows a conventional exhaust gas turbocharger with a radially impinged exhaust gas turbine and a centrifugal compressor 2.
- the exhaust gas is aligned before reaching the turbine wheel 3 in a guide, the nozzle ring 1, on the blades 31 of the turbine wheel.
- Fig. 1 shows a section of a section of a radially flowed axial turbine of an exhaust gas turbocharger.
- the arrows indicate the flow direction of the exhaust gas flow coming from the combustion chambers of the reciprocating engine.
- the inventively designed nozzle ring 1 is composed of a plurality of vanes 12, which are arranged in the circumferential direction regularly or irregularly distributed in the flow channel.
- the vanes 12 are held on both sides of the flow channel in each case by an annular plate-shaped fastening ring 10 and 11 in a fixed angular position.
- the guide vanes 12 are positioned according to the invention by means of a bolt 13 in a bore in the fastening ring 10.
- the guide vanes 12 On the side facing away from the bearing housing 40, the guide vanes 12 according to the invention comprise positioning aids.
- the arrangement of the positioning aids in the respective shaping of the respective positioning aid corresponding openings in the second fastening ring 11 fixes the guide vanes 12 with respect to their angular position.
- Fig. 2 and Fig. 3 show in each case isometric views of a fully assembled, but not yet installed in a turbomachine, inventively designed nozzle ring 1.
- the many individual blades 12 can be seen, which are arranged distributed in the circumferential direction between the first mounting ring 10 and the second mounting ring 11 and fixed in its angular position, wherein the two mounting rings are arranged parallel to each other and coaxial with respect to their common central axis.
- the first fastening ring 10 can assume forms which go beyond the plate-shaped basic shape, for example an additional fastening flange, in order to secure the fastening between the bearing housing 40 and To allow turbine housing 30.
- the ring plate shape is important for the first fastening ring.
- bores are recessed, in which later find bolts of the guide vanes of the nozzle ring recording and can be optionally fixed.
- the vanes 12 comprise in the first, simplest embodiment according to Fig. 2 . 4 and 5 a streamlined blade body having two planar end faces A and B and a bolt 13 which is arranged on the first attachment ring facing end face A of the vane.
- the end faces B serve as positioning aids in order to fix the guide vanes 12 in the predetermined angular position.
- the bolt 13 is tuned by the length, the diameter and its shape to the holes 16 in the first mounting ring 10, so that the guide blades 12 can be aligned in the inserted state before a possible, final fixation in the predetermined by the opening in the second mounting ring angular position in particular by turning the vane about the axis of the bolt.
- the rotation of the vane about the axis of the bolt may be limited to one or more angular ranges or discrete angular values due to the shape of the bore and bolt and does not necessarily require full, continuous rotation of the bolt in the bore.
- the third element of the invention constructed according to the modular nozzle ring is the second mounting ring 11, which is in the simplest form, only a thin sheet with openings 14 for receiving the positioning of the guide vanes 12.
- the openings 14 are matched in size and shape to the shape of the positioning aids and correspond to the contour of the positioning aids in the openings 14 should find recording.
- the positioning aids correspond at least partially to the profile of the front side B, so that the openings 14 correspond either partially or completely to the contour of the end face B of the guide vanes 12. Due to the orientation of the openings 14, the position of the individual guide vanes is determined.
- Each vane can be rotated in the bore 16 in the first mounting ring 10 about the axis of the bolt until the intended position is determined by inserting the free vane end in the opening 14 in the second mounting ring 11.
- the second fastening ring 11 needs to be adapted, while the first fastening ring 10 and the guide vanes 12 can remain unchanged for all possible angles of the guide vanes 12.
- both mounting rings can also be cast as individual parts.
- the second mounting ring 11 can be moved along the height of the vanes, as with the divided for the purpose of illustration second mounting ring in the right half of Fig. 2 is indicated. This can be done with an unchanged trained mounting ring nozzle rings of different flow channel width.
- the openings 14 in the second mounting ring 11 are formed so that they no longer correspond to the full Leitschaufelquerrough profile, but only a portion of the vane tip in the region of the end face B can accommodate.
- the positioning aids are designed such that they only partially correspond to the profile of the front side B.
- the vane tips are according to the embodiment according to 6 and 7 provided with a projection 15 whose outer contour corresponds in shape and size of the opening 14 in the second fastening ring 11.
- the second mounting ring 11 in this embodiment can thus no longer arbitrarily along the height of the vane move. Rather, a stop on the guide vane ensures a defined height h 'of the flow channel in the nozzle ring 1.
- the vane tip according to the embodiment according to 8 and 9 have two stepped projections 15 'and 15 ", which allow to realize two different specific flow channel heights h' and h" with one vane type and two differently formed second fastening rings 11 'and 11 " Openings 14 'and 14 "matched to the outer contour of the respective projections 15' and 15" on the blades.
- the vane tips are formed to include two positioning aids.
- the guide blade tips have two separately formed projections 16 and 16 '.
- the respective second attachment rings 11 "are formed such that the projections 16 and 16 'of the vane tips are received in separate openings 14' and 14".
- the openings 14 'and 14 "correspond in shape and size of the contour of the projections 16 and 16'.
- Fig. 12 shows a plan view of the two end faces A and B.
- the projections 16 and 16 'on a common contour with the end face B of the vanes 12 in the lower region.
- the dashed line in the upper area should make it clear that the projections 16 and 16 'in the upper region do not necessarily have to correspond to the contour of the front side B of the guide vanes 12.
- the vanes When mounting the inventively modular assembled nozzle ring as described above, the vanes are used with their bolts in the holes of the first mounting ring. On the opposite side, the free ends of the vanes are inserted into the mating openings in the second mounting ring, the vanes being aligned about the axes of the bolts in the bores for locating the locating aids in the openings in the second mounting ring.
- the guide vanes can first be inserted into the second fastening ring and then the bolts can be guided into the bores of the first fastening ring.
- the components are materially connected to each other, for example by welding or soldering, whereby they are immovably connected to a single component to each other.
- the components can also be positively or non-positively connected to each other, for example by a snap device or a press joint.
Description
Die Erfindung bezieht sich auf das Gebiet der Strömungsmaschinen, wie etwa Abgasturbolader für aufgeladene Brennkraftmaschinen.The invention relates to the field of turbomachines, such as turbocharger for supercharged internal combustion engines.
Sie betrifft einen Düsenring für eine solche Strömungsmaschine, etwa für die Turbine eines Abgasturboladers, wie beispielsweise in
Turbolader werden zur Leistungssteigerung von Hubkolbenmotoren eingesetzt. Damit die Turbine möglichst effizient betrieben werden kann, wird das Abgas vor der Turbine in einer Reihe Leitschaufeln einer Leitvorrichtung, auch Düsenring genannt, umgelenkt. Bei Abgasturboladern mit radialen Turbinen umfasst der Düsenring zwei Befestigungsringe, welche den Strömungskanal auf beiden Seiten begrenzen, und mehrere Leitschaufeln, welche je nach Anwendung in einem bestimmten Winkel gegenüber der Strömung stehen und auch eine unterschiedliche Länge aufweisen.Turbochargers are used to increase the performance of reciprocating engines. So that the turbine can be operated as efficiently as possible, the exhaust gas in front of the turbine in a row guide vanes of a guide device, also called nozzle ring, deflected. In turbochargers with radial turbines, the nozzle ring comprises two mounting rings, which limit the flow channel on both sides, and a plurality of guide vanes, which are depending on the application in a certain angle to the flow and also have a different length.
Wird der Düsenring an einem Stück mittels Sand- oder Feingussverfahren hergestellt, ist die Strömungsführung in der Regel zwar sehr gut, dafür muss für jede Schaufelwinkelstellung ein eigenes Gussmodell angefertigt werden. Zudem ist die Flexibilität für zusätzliche Winkelstellungen oder Leitschaufelabstände eingeschränkt, da bei jeder Änderung ein neues Gussmodell hergestellt werden muss, was sowohl teuer wird als auch eine sehr lange Beschaffungszeit zur Folge hat.If the nozzle ring is manufactured in one piece by means of sand casting or investment casting, the flow guidance is generally very good, but a separate casting model must be made for each blade angle position. In addition, the flexibility for additional angularity or vane spacing is limited, as each time a change is made, a new casting model must be made, which is both expensive and results in a very long lead time.
Daneben gibt es ein Verfahren, bei welchem Leitschaufeln in einzelne Ringe geschweisst oder gelötet werden. Bei diesem Verfahren ist die Strömungsführung zwar optimal, es müssen aber für jede Winkelstellung neue Ringe bereitgestellt werden, dafür sind die Kosten etwas geringer als beim Feingussverfahren.In addition, there is a method in which vanes are welded or soldered into individual rings. Although the flow guidance is optimal in this process, new rings have to be provided for each angular position, but the costs are slightly lower than with the investment casting process.
Bei der kostengünstigsten der verbreitet angewandten Herstellungsvarianten werden anstelle der prismatischen Profile Bleche zwischen die Befestigungsringe geschweisst oder gelötet. Die geformten Leitschaufeln sind in Ausformungen in den Befestigungsringen angeordnet und darin angeschweisst oder angelötet. Bei solchen Düsenringen ist die Strömungsführung aufgrund der Blechprofile deutlich schlechter als bei den beiden erstgenannten Varianten. Zudem sind bei solchen Düsenringen die Wandungen extrem dünn und somit anfällig auf Erosion durch Abgaspartikel.In the most cost-effective of the widely used manufacturing variants, instead of the prismatic profiles, sheets are welded or soldered between the fastening rings. The shaped vanes are in formations in the Fastening rings arranged and welded or soldered therein. In such nozzle rings, the flow guidance due to the sheet metal profiles is significantly worse than in the first two variants. In addition, in such nozzle rings, the walls are extremely thin and thus prone to erosion by exhaust particles.
Somit muss bei der Herstellung von Düsenringen ein Kompromiss zwischen Kosten und Wirkungsgrad des Düsenringes eingegangen werden. Bisher gibt es kein Herstellungsverfahren, welches deutlich kostengünstiger ist als das Feingussverfahren und dennoch eine vergleichbare, gute Strömungsführung erreicht.Thus, in the manufacture of nozzle rings a compromise between cost and efficiency of the nozzle ring must be addressed. So far, there is no manufacturing process that is significantly cheaper than the investment casting process and yet achieves a comparable, good flow guidance.
Eine Möglichkeit besteht darin, Düsenringe aus zwei Befestigungsringen und einer Vielzahl baugleicher Schaufeln zusammen zufügen, wodurch die Flexibilität in der Produktion deutlich verbessert wird. Damit gefügte Düsenringe die Hauptfunktionen Schaufelstellung und Schaufellänge (Abstände der beiden Befestigungsringe) abdecken können, aber auch zusätzliche Funktionen wie Befestigung des gesamten Düsenrings im Turbolader oder Abdichtung gegen Leckageströmung beinhalten, werden oft unterschiedliche oder zumindest unterschiedlich nachbearbeitete Ausgangsbauteile eingesetzt.One possibility is to add together jet rings of two mounting rings and a variety of identical blades together, whereby the flexibility in production is significantly improved. In order for nozzle rings to be able to cover the main functions of blade position and blade length (distances of the two attachment rings), but also include additional functions such as attachment of the entire nozzle ring in the turbocharger or sealing against leakage flow, different or at least differently finished output components are often used.
Die Aufgabe der vorliegenden Erfindung besteht darin, einen gefügten Düsenring mit der Strömungsführung eines im Feingussverfahren hergestellten Düsenrings zu schaffen, welcher sich für unterschiedliche Schaufelstellungen und Schaufellänge modular aus wenigen Einzelelementen zusammensetzen lässt.The object of the present invention is to provide an assembled nozzle ring with the flow guidance of a nozzle ring produced by precision casting, which modularly can be composed of a few individual elements for different blade positions and blade length.
Erfindungsgemäss wird dies mit einem Düsenring erreicht, bei welchem die Leitschaufeln auf einer Stirnseite einen Bolzen aufweist, welcher in einer dafür vorgesehenen Bohrung in einem ersten Befestigungsring Aufnahme findet. Die Winkelstellung der Schaufel wird am anderen Ende durch eine entsprechende Profilausnehmung im Befestigungsring, die entweder der kompletten Fläche der Stirnseite oder aber auch nur dem Profil der Vorsprünge auf der Stirnseite entspricht, im zweiten Befestigungsring eingestellt und durch die Montage der Schaufeln dauerhaft fixiert. Die Bolzen auf der ersten Stirnseite haben den Vorteil, dass der erste Befestigungsring durch lediglich einfache Bohrungen zur Aufnahme der Schaufeln benötigt. Dadurch kann dieser Befestigungsring auch aufwendigere Formen aufweisen, ohne dass die Herstellung dieses Ringes durch Profilausschnitte erschwert wird. Für alle Schaufelwinkelstellungen kann lediglich ein Ring mit stets den gleichen Bohrungen im Drehpunkt der Schaufel verwendet werden.According to the invention this is achieved with a nozzle ring, wherein the guide vanes on a front side has a bolt, which is received in a designated hole in a first mounting ring receiving. The angular position of the blade is set at the other end by a corresponding profile recess in the mounting ring, which corresponds to either the entire surface of the front side or just the profile of the projections on the front side in the second mounting ring and permanently fixed by the assembly of the blades. The bolts on the first end face have the advantage that the first fastening ring requires only simple holes for receiving the blades. As a result, this fastening ring can also have more complex shapes without the Production of this ring is made difficult by profile cutouts. For all blade angle positions, only one ring with always the same holes in the pivot point of the blade can be used.
Die Kanalbreite und damit die effektive, im Strömungskanal wirksame Schaufellänge, wird durch den profilausgeschnittenen, zweiten Befestigungsring eingestellt. Das Einstellen kann über einen oder mehrere Absätze an der Leitschaufel, oder aber mittels eines abstandshaltenden Werkzeugs während dem Fügen der Kontaktstellen erfolgen.The channel width and thus the effective blade length effective in the flow channel is set by the profile-cut second fastening ring. The setting can be done via one or more paragraphs on the vane, or by means of a spacer tool during the joining of the contact points.
Der Drehpunkt der einzelnen Leitschaufeln kann je nach Ausführungsform variieren, daher kann der Bolzen je nach Ausführungsform an unterschiedlichen Orten entlang der Stirnseite der Leitschaufel angeordnet sein.The pivot point of the individual guide vanes may vary depending on the embodiment, therefore, depending on the embodiment, the bolt may be arranged at different locations along the end face of the guide vane.
Die Leitschaufeln des Düsenrings lassen sich mit einem veränderlichen Profil (Form, Querschnitt und Winkellage) im Feinguss-, Pulvermetallurgisch oder Feinschmiedeverfahren herstellen.The guide vanes of the nozzle ring can be produced with a variable profile (shape, cross section and angular position) in investment casting, powder metallurgy or fine forging.
Zur Befestigung der Leitschaufeln an den Befestigungsringen können diese stoffschlüssig miteinander verbunden werden, beispielsweise durch Anschweissen oder Anlöten. In jedem Fall werden diese derart mit einander verbunden, dass die Leitschaufeln und Befestigungsringe nach dem Fügen unbeweglich zu einander sind. Optional können die Leitschaufeln auch form- oder kraftschlüssig an den Befestigungsringen befestigt sein, beispielsweise durch eine Schnappvorrichtung oder eine Pressfügung.To attach the vanes to the mounting rings, these can be materially connected to each other, for example, by welding or soldering. In any case, they are connected to each other in such a way that the guide vanes and mounting rings are immovable to each other after joining. Optionally, the guide vanes may also be positively or non-positively attached to the mounting rings, for example by a snap device or a press-fitting.
Werden die einzelnen Leitschaufeln im Feingussverfahren hergestellt, können sie jede beliebige Geometrie haben, wodurch sich beim fertig zusammengebauten Düsenring eine optimale Strömungsführung ergibt, welche der Strömungsführung des in einem Stück im Feingussverfahren hergestellten Düsenrings entspricht.If the individual guide vanes are manufactured by precision casting, they can have any desired geometry, resulting in an optimal flow guidance in the completely assembled nozzle ring, which corresponds to the flow guidance of the nozzle ring produced in one piece using the precision casting method.
Vorteilhafterweise können die Leitschaufeln als Hohlprofile gegossen werden, wodurch sich das Gesamtgewicht des Düsenrings reduzieren lässt. Dieser wird dadurch leichter und ist somit einfacher zu montieren und demontieren. Auch werden durch die Hohlprofile der Leitschaufeln die transienten Spannungen im Betrieb mit heissen Luftströmungen positiv beeinflusst.Advantageously, the guide vanes can be cast as hollow profiles, whereby the total weight of the nozzle ring can be reduced. This makes it easier and thus easier to assemble and disassemble. The transient stresses during operation with hot air flows are also positively influenced by the hollow profiles of the guide vanes.
Der erfindungsgemässe, aus Einzelteilen zusammengesetzte Düsenring ist erheblich kostengünstiger herzustellen als ein vergleichbarer, im Feingussverfahren hergestellter, einteiliger Düsenring. Die Kostenvorteile ergeben sich aus der um ein Vielfaches vereinfachten Guss oder Schmiedearbeit. Der Mehraufwand durch die Bereitstellung und Vorfertigung der Befestigungsringe wird weiter verringert, indem der erste Befestigungsring mit Bohrungen zur Aufnahme der Bolzen für mehrere Ausführungsformen von Düsenringen mit unterschiedlichen Winkelstellungen verwendet werden kann.The inventive, composed of individual parts nozzle ring is considerably cheaper to produce than a comparable, produced by precision casting, one-piece nozzle ring. The cost advantages result from the many times simplified casting or forging work. The additional expense of providing and prefabricating the attachment rings is further reduced by using the first attachment ring with bores to receive the bolts for multiple embodiments of nozzle rings having different angular positions.
Da der erfindungsgemässe Düsenring aus verschiedenen Einzelteilen zusammengesetzt ist, können auch unterschiedliche Materialien verwendet werden. Dies trägt weiter zur Senkung der Herstellungskosten gegenüber einem in einem Stück im Feingussverfahren hergestellten Düsenring bei. So sind etwa nur die Leitschaufeln aus einem hochwertigeren Material (beispielsweise eine Nickelbasislegierung) gegossen oder geschmiedet, während die Befestigungsringe aus einem kostengünstigen Material (beispielsweise CrNi-Stahl) gefertigt sind. Natürlich können die beiden Befestigungsringe auch aus je einem anderen Material gefertigt sein, da sie etwa unterschiedlichen thermischen oder mechanischen Belastungen standzuhalten haben.Since the inventive nozzle ring is composed of various individual parts, different materials can be used. This further contributes to the reduction in manufacturing costs compared to a nozzle ring produced in one piece by precision casting. For example, only the vanes of a higher quality material (eg, a nickel base alloy) are cast or forged while the mounting rings are made of a low cost material (eg, CrNi steel). Of course, the two mounting rings can also be made of a different material, since they have to withstand different thermal or mechanical loads.
Ein weiterer Vorteil des erfindungsgemäss aus einzelnen Leitschaufeln und separaten Befestigungsringen gefertigten Düsenrings ist darin zu sehen, dass mit einem einzigen Schaufelprofil Düsenringe mit verschiedenen Schaufelstellungen realisiert werden können. Für die Herstellung der Befestigungsringe ergibt sich dabei lediglich ein kaum nennenswerter Mehraufwand, da lediglich die Vorlage oder das Programm für das Ausschneiden der Öffnungen im Befestigungsring geändert werden muss. Im Gegensatz dazu ist beim in einem Stück im Feingussverfahren hergestellten Düsenring für jede Schaufelstellung ein eigenes Gussmodell notwendig, welches speziell angefertigt werden muss. Bei einem Abgasturbolader einer bestimmten Baugrösse, werden beispielsweise bis zu 10 verschiedene Staffelungen (Winkelstellung der Profile) benötigt.Another advantage of the present invention made of individual vanes and separate mounting rings nozzle ring is the fact that with a single blade profile nozzle rings can be realized with different blade positions. For the production of the mounting rings, this results in only a little significant additional effort, since only the template or the program for cutting out the openings in the mounting ring must be changed. In contrast, the nozzle ring produced in one piece using the precision casting process requires a separate casting model for each blade position, which must be custom-made. In an exhaust gas turbocharger of a certain size, for example, up to 10 different graduations (angular position of the profiles) are required.
Ein weiterer Vorteil des erfindungsgemäss aus einzelnen Leitschaufeln und separaten Befestigungsringe gefertigten Düsenrings ist darin zu sehen, dass sich anstelle eines kompletten Düsenringes auch einzelne Segmente ohne merklichen Mehraufwand herstellen lassen. Ein in Umfangsrichtung in zwei oder mehr Segmente unterteilter Düsenring weist ein verbessertes transientes Verhalten beim Aufheizen und Abkühlen auf. Zudem sind die Einzelteile des segmentierten Düsenrings, auch ohne Hohlprofile, markant leichter als ein ganzer, einteiliger Düsenring, was für die Montage und Demontage vorteilhaft ist.Another advantage of the present invention made of individual vanes and separate mounting rings nozzle ring is the fact that can be produced without appreciable additional effort instead of a complete nozzle ring and individual segments. A circumferentially divided into two or more segments nozzle ring has an improved transient behavior during heating and cooling. In addition, the individual parts of the segmented nozzle ring, even without hollow profiles, significantly lighter than a whole, one-piece nozzle ring, which is advantageous for assembly and disassembly.
Damit der erfindungsgemässe Düsenring beim Einbau in die Strömungsmaschine bezüglich der Umfangsrichtung richtig und bleibend positioniert werden kann, können an den Befestigungsringen Positionierungselemente vorgesehen sein. Diese können als Vorsprünge oder als in die Befestigungsringe eingelassene Nuten ausgebildet sein.So that the nozzle ring according to the invention can be correctly and permanently positioned with respect to the circumferential direction when installed in the turbomachine, positioning elements can be provided on the fastening rings. These may be formed as projections or as embedded in the mounting rings grooves.
Weitere Vorteile ergeben sich aus den abhängigen Ansprüchen.Further advantages emerge from the dependent claims.
Anschliessend sind anhand der Zeichnungen Ausführungsformen des erfindungsgemässen Düsenrings beschrieben. Hierbei zeigt
- Fig. 1
- ein Schnittbild einer Radialturbine eines Abgasturboladers mit einem erfindungsgemäss ausgebildeten Düsenring,
- Fig. 2
- eine isometrische Ansicht eines gemäss einer ersten Ausführungsform der Erfindung ausgebildeten Düsenrings mit einer Vielzahl von Laufschaufeln,
- Fig. 3
- eine isometrische Ansicht eines gemäss einer zweiten Ausführungsform der Erfindung ausgebildeten Düsenrings mit einer Vielzahl von Laufschaufeln,
- Fig. 4
- eine Detailansicht einer Laufschaufel des Düsenrings nach
Fig. 2 , - Fig. 5
- ein schematisches Schnittbild des Düsenrings nach
Fig. 2 , - Fig. 6
- eine Detailansicht einer Laufschaufel des Düsenrings nach
Fig. 3 , - Fig. 7
- ein schematisches Schnittbild des Düsenrings nach
Fig. 3 , - Fig. 8
- eine Detailansicht einer Laufschaufel eines gemäss einer dritten Ausführungsform ausgebildeten Düsenrings,
- Fig. 9
- ein schematisches Schnittbild eines gemäss einer dritten Ausführungsform ausgebildeten Düsenrings,
- Fig. 10
- eine Detailansicht einer Laufschaufel eines gemäss einer vierten Ausführungsform ausgebildeten Düsenrings,
- Fig. 11
- ein schematisches Schnittbild eines gemäss einer vierten Ausführungsform ausgebildeten Düsenrings,
- Fig. 12a
- und
Fig. 12b zeigen jeweils eine Draufsicht der jeweiligen Stirnseiten A und B der Leitschaufeln eines gemäss einer vierten Ausführungsform ausgebildeten Düsenrings, - Fig. 13
- ein schematisches Schnittbild eines Abgasturbolader mit Radialturbine gemäss dem Stand der Technik mit einem turbinenseitigen Düsenring.
- Fig. 1
- a sectional view of a radial turbine of an exhaust gas turbocharger with an inventively designed nozzle ring,
- Fig. 2
- 8 is an isometric view of a nozzle ring with a plurality of blades formed according to a first embodiment of the invention;
- Fig. 3
- an isometric view of a formed according to a second embodiment of the invention nozzle ring with a plurality of blades,
- Fig. 4
- a detailed view of a blade of the nozzle ring after
Fig. 2 . - Fig. 5
- a schematic sectional view of the nozzle ring after
Fig. 2 . - Fig. 6
- a detailed view of a blade of the nozzle ring after
Fig. 3 . - Fig. 7
- a schematic sectional view of the nozzle ring after
Fig. 3 . - Fig. 8
- a detailed view of a blade of a trained according to a third embodiment nozzle ring,
- Fig. 9
- a schematic sectional view of a formed according to a third embodiment nozzle ring,
- Fig. 10
- a detailed view of a blade of a trained according to a fourth embodiment nozzle ring,
- Fig. 11
- FIG. 2 is a schematic sectional view of a nozzle ring formed according to a fourth embodiment; FIG.
- Fig. 12a
- and
Fig. 12b each show a plan view of the respective end faces A and B of the guide vanes of a nozzle ring formed according to a fourth embodiment, - Fig. 13
- a schematic sectional view of an exhaust gas turbocharger with radial turbine according to the prior art with a turbine-side nozzle ring.
Die hiernach aufgeführten Ausführungsbeispiele des erfindungsgemässen Düsenrings werden bezüglich dem Einsatz in einer Radialturbine eines Abgasturboladers beschrieben. Die erfindungsgemässen Düsenringe, wie sie durch die Patentansprüche geschützt sind, eignen sich jedoch auch für andere Strömungsmaschinen, so etwa für Pumpen, Verdichter, Gasturbinen, etc.The exemplary embodiments of the nozzle ring according to the invention listed hereinafter are described with regard to use in a radial turbine of an exhaust gas turbocharger. However, the inventive nozzle rings, as they are protected by the claims, are also suitable for other turbomachines, such as pumps, compressors, gas turbines, etc.
Als Basis des Düsenrings 1 dient eine ringförmige Platte, der erste Befestigungsring 10. Je nach Einbaugeometrie in der Abgasturbine kann der erste Befestigungsring 10 Formen annehmen, die über die plattenförmige Grundform hinausgehen, beispielsweise einen zusätzlichen Befestigungsflansch, um die Befestigung im Verbund zwischen Lagergehäuse 40 und Turbinengehäuse 30 zu ermöglichen. Für die erfindungsgemässe Funktion ist für den ersten Befestigungsring jedoch lediglich die Ringplattenform von Bedeutung. In die Ringplatte des ersten Befestigungsrings 10, welche im Betrieb auch den Strömungskanal begrenzt, sind Bohrungen eingelassen, in welchen später Bolzen der Leitschaufeln des Düsenrings Aufnahme finden und gegebenenfalls fixiert werden können.Depending on the installation geometry in the exhaust gas turbine, the
Die Leitschaufeln 12 umfassen in der ersten, einfachsten Ausführungsform gemäss
Das dritte Element des erfindungsgemäss modular aufgebauten Düsenrings ist der zweite Befestigungsring 11, welcher in der einfachsten Form lediglich ein dünnes Blech mit Öffnungen 14 zur Aufnahme der Positionierungshilfen der Leitschaufeln 12 ist. Dabei sind die Öffnungen 14 in Grösse und Form auf die Formgebung der Positionierungshilfen abgestimmt und entsprechen der Kontur der Positionierungshilfen, die in den Öffnungen 14 Aufnahme finden soll. Die Positionierungshilfen entsprechen dabei zumindestens teilweise dem Profil der Stirnseite B, so dass die Öffnungen 14 entweder teilweise oder komplett der Kontur der Stirnseite B der Leitschaufeln 12 entsprechen. Durch die Ausrichtung der Öffnungen 14 wird die Lage der einzelnen Leitschaufeln festgelegt. Jede Leitschaufel lässt sich in der Bohrung 16 im ersten Befestigungsring 10 um die Achse des Bolzens drehen, bis die vorgesehene Lage durch Einschieben des freien Leitschaufelendes in die Öffnung 14 im zweiten Befestigungsring 11 festgelegt wird. Um Düsenringe mit unterschiedlich ausgerichteten Leitschaufeln 12 herstellen zu können, braucht erfindungsgemäss nur der zweite Befestigungsring 11 angepasst zu werden, während der erste Befestigungsring 10 und die Leitschaufeln 12 für alle möglichen Winkel der Leitschaufeln 12 unverändert bleiben können.The third element of the invention constructed according to the modular nozzle ring is the second mounting
Die Ausformungen in dem zweiten Befestigungsring werden bei der Herstellung vorteilhafterweise ausgeschnitten oder ausgestanzt. Beim Schneiden eignet sich vor allem das Laserschneiden. Alternativ können beiden Befestigungsringe auch als Einzelteile gegossen werden.The formations in the second fastening ring are advantageously cut out or punched out during manufacture. When cutting, especially the laser cutting is suitable. Alternatively, both mounting rings can also be cast as individual parts.
In der ersten Ausführungsform des erfindungsgemässen Düsenrings weist der zweite Befestigungsring Öffnungen 14 auf, welche dem vollen Leitschaufelquerschnitt-Profil entsprechen, da die Stirnflächen B insgesamt als Positionierungshilfen dienen. Damit lässt sich der zweite Befestigungsring 11 entlang der Höhe der Leitschaufeln verschieben, wie dies mit dem zum Zweck der Veranschaulichung geteilten zweiten Befestigungsring in der rechten Hälfte der
In der zweiten und dritten Ausführungsform gemäss den
Entsprechend sind die Positionierungshilfen derart ausgeführt, dass diese nur noch teilweise dem Profil der Stirnseite B entsprechen. Die Leitschaufelspitzen sind gemäss der Ausführung nach
Die Leitschaufelspitze gemäss der Ausführung nach
In einer vierten Ausführungsform gemäss den
Bei der Montage des erfindungsgemäss modular zusammengefügten Düsenrings werden wie oben beschrieben die Leitschaufeln mit ihren Bolzen in den Bohrungen des ersten Befestigungsrings eingesetzt. Auf der gegenüberliegenden Seite werden die freien Enden der Leitschaufeln in die passenden Öffnungen in dem zweiten Befestigungsring eingeführt, wobei die Leitschaufeln um die Achsen der Bolzen in den Bohrungen ausgerichtet werden, damit die Positionierungshilfen in den Öffnungen in dem zweiten Befestigungsring Aufnahme finden. Alternativ können erst die Leitschaufeln in den zweiten Befestigungsring eingesetzt und anschliessend die Bolzen in die Bohrungen des ersten Befestigungsrings geführt werden. Ist die Strömungskanalhöhe des Düsenrings nicht über einen Anschlag festgelegt, wie in den Ausführungsformen nach
Obwohl in den dargestellten Ausführungsformen die beiden Befestigungsringe jeweils parallel zueinander angeordnet sind, sind auch Ausführungsformen denkbar und durch die nachfolgenden Ansprüche geschützt, bei welchen die Befestigungsringe in einem Winkel zueinander angeordnet sind. Dabei ist der erste und/ oder der zweite Befestigungsring jeweils konisch ausgebildet, so dass sich zwischen den koaxial angeordneten Befestigungsringen im entlang der Achse geführten Schnitt eine Winkelstellung abweichend von der parallelen Anordnung ergibt. Dabei sind Winkelöffnungen im Bereich von -10° (nach radial aussen hin verengend) bis + °20 Grad (nach radial aussen hin öffnend) denkbar.
- 1
- Düsenring
- 10, 11
- Befestigungsring
- 12
- Leitschaufel
- 13
- Bolzen
- 14
- Öffnung im Befestigungsring
- 15
- Vorsprung
- 16
- Bohrung
- 2
- Verdichterrad
- 20
- Verdichtergehäuse
- 3
- Turbinenrad
- 31
- Laufschaufeln des Turbinenrades
- 32
- Nabe des Turbinenrades
- 30
- Turbinengehäuse
- 4
- Welle
- 40
- Lagergehäuse
- A, B
- Stirnfläche der Leitschaufeln
- 1
- nozzle ring
- 10, 11
- fixing ring
- 12
- vane
- 13
- bolt
- 14
- Opening in the fastening ring
- 15
- head Start
- 16
- drilling
- 2
- compressor
- 20
- compressor housing
- 3
- turbine
- 31
- Blades of the turbine wheel
- 32
- Hub of the turbine wheel
- 30
- turbine housing
- 4
- wave
- 40
- bearing housing
- A, B
- Face of the vanes
Claims (14)
- Nozzle ring (1), comprising a first, annular plate-like fastening ring (10) and a second, annular plate-like fastening ring (11) and also a multiplicity of guide vanes (12) which are arranged between the fastening rings (10, 11), which are arranged coaxially to each other, and are fixed in a respective angular position, characterized in that
the guide vanes (12) have in each case a pin (13) on a first end face (A),
in that the guide vanes (12) are guided in a first fastening ring (10) by means of the arrangement of the respective pin (13) in a respective hole (16) wherein the respective pin (13) and the respective hole (16) are formed in such a way that the guide vane (12), during the assembly of the nozzle ring (1), can be oriented into the respective angular position,
in that the guide vanes (12), on a second end face (B), have in each case at least one positioning aid which corresponds in each case at least partially to the outer contour of said second end face (B), and
in that the guide vanes (12) are fixed with regard to their angular position by means of the arrangement of the at least one positioning aid in an opening (14) in each case - which corresponds to the shape of the positioning aid - in the second fastening ring (11). - Nozzle ring according to Claim 1, wherein the hole (16) in the first fastening ring (10) and the pin (13) of the guide vanes (12) are formed in such a way that rotation of the pin is limited to one angular range or to individual, discrete angular values.
- Nozzle ring according to one of the preceding claims, wherein the guide vanes (12) are connected to the first and/or to the second fastening ring (10, 11) in a form-fitting, frictionally locking or materially bonding manner.
- Nozzle ring according to one of the preceding claims, wherein the positioning aids of the guide vanes (12) are designed in such a way that the second end faces (B) have in each case at least one projection (15, 15', 15") which projects in relation to the end face (B), and wherein the guide vanes (12), along the at least one projection (15, 15', 15", 16, 16'), are arranged in a opening (14, 14', 14")- corresponding to the outer contour of the at least one projection - in the second fastening ring (11, 11', 11").
- Nozzle ring according to one of the preceding claims, wherein the guide vanes (12) are produced from a first material, and wherein the first fastening ring (10), or the second fastening ring (11), or the first fastening ring (10) and the second fastening ring (11), is, or are, produced from a second material which is different from the first material.
- Nozzle ring according to Claim 5, wherein the guide vanes (12) are produced from a nickel-based alloy, and wherein the first fastening ring (10), or the second fastening ring (11), or the first fastening ring (10) and the second fastening ring (11), is, or are, produced from a CrNi steel.
- Nozzle ring according to one of the preceding claims, wherein the first fastening ring (10) and/or the second fastening ring (11) is, or are, of a conical design in such a way that an angle of between - 10° and + 20° is created between the two fastening rings.
- Exhaust gas turbocharger, characterized by a radial turbine with a nozzle ring (1) according to one of the preceding claims.
- Guide vane for arranging and fixing in a respective angular position between two fastening rings of a nozzle ring which are arranged coaxially to each other, wherein the guide vane (12) has a pin (13) on a first end face (A), characterized in that the guide vane (12), on a second end face (B), has at least one positioning aid which in each case corresponds at least partially to the outer contour of the second end face (B).
- Method for producing a nozzle ring with a multiplicity of guide vanes (12) which are arranged between a first fastening ring (10) and a second fastening ring (11), in which method the guide vanes (12), on one end face (A), are provided with pins (13) with which they are arranged in holes (16) of the first fastening ring (10),
openings (14) are let into the second fastening ring (11), which openings correspond to the shape of the positioning aids (12) and into which the positioning aids of the guide vanes are inserted, and
the guide vanes (12) are connected to the two fastening rings (10, 11) in a materially bonding, frictionally locking or form-fitting manner. - Method according to Claim 10, wherein the guide vanes (12), rotating around the pin (13) in the hole (16), are aligned with the openings (14) in the second fastening ring (11).
- Method according to Claim 10, wherein the positioning aids of the guide vanes (12) are first introduced into the openings (14) in the second fastening ring (11) and then the pins (13) are introduced into the holes (16) in the first fastening ring (10).
- Method according to one of Claims 10 to 12, wherein the positioning aids of the guide vanes (12) on the end face (B), which are introduced into the openings (14) in the second fastening ring (11), comprise at least one projection (15), and this projection is introduced into the openings (14) in the second fastening ring (11), wherein the end face (B) provides a stop for the second fastening ring (11) and the guide vanes are introduced into the openings in the second fastening ring (11) as far as the stop.
- Method according to one of claims 10 to 12, wherein the two fastening rings (10, 11) are positioned in relation to each other by means of a spacer for the materially bonding connection.
Priority Applications (1)
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EP13192993.7A EP2733311B1 (en) | 2012-11-16 | 2013-11-15 | Nozzle ring |
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EP12193018 | 2012-11-16 | ||
EP13192993.7A EP2733311B1 (en) | 2012-11-16 | 2013-11-15 | Nozzle ring |
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EP (1) | EP2733311B1 (en) |
JP (2) | JP6092077B2 (en) |
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2013
- 2013-11-15 EP EP13192993.7A patent/EP2733311B1/en active Active
- 2013-11-15 KR KR1020130139417A patent/KR20140063474A/en active Application Filing
- 2013-11-18 JP JP2013238369A patent/JP6092077B2/en active Active
- 2013-11-18 US US14/083,025 patent/US9909456B2/en active Active
- 2013-11-18 CN CN201310574838.7A patent/CN103821568B/en active Active
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JP2014111936A (en) | 2014-06-19 |
CN103821568A (en) | 2014-05-28 |
KR20140063474A (en) | 2014-05-27 |
JP2017025923A (en) | 2017-02-02 |
US9909456B2 (en) | 2018-03-06 |
JP6092077B2 (en) | 2017-03-08 |
KR101994511B1 (en) | 2019-09-24 |
KR20150079537A (en) | 2015-07-08 |
US20140140834A1 (en) | 2014-05-22 |
CN103821568B (en) | 2016-04-20 |
EP2733311A1 (en) | 2014-05-21 |
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