EP1892380A1 - Turbine blade retention system - Google Patents
Turbine blade retention system Download PDFInfo
- Publication number
- EP1892380A1 EP1892380A1 EP06017818A EP06017818A EP1892380A1 EP 1892380 A1 EP1892380 A1 EP 1892380A1 EP 06017818 A EP06017818 A EP 06017818A EP 06017818 A EP06017818 A EP 06017818A EP 1892380 A1 EP1892380 A1 EP 1892380A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine blade
- wedge
- safety device
- securing
- traction means
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/322—Blade mountings
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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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
- F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
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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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/32—Locking, e.g. by final locking blades or keys
- F01D5/326—Locking of axial insertion type blades by other means
Definitions
- the invention relates to a turbine blade securing device for a turbomachine.
- Blade fasteners of the above type are typically used for mounting blades on a rotor of a turbomachine, such as a steam turbine, which rotate at high speed during rotation of the rotor. Due to the fast rotation of the rotor, the associated blades are subjected to high centrifugal force. The blade root of the blades is therefore exposed to high forces and is strongly forced radially outward in a groove on the blade holder. In addition, the blades are exposed to strong vibration loads, so that it can come to the groove to mechanical damage, material fatigue, corrosion and migration of the blade root within the groove.
- the object of the invention is to provide a turbine blade securing device in which a precise and low-vibration mounting of turbine blades in associated blade holders is ensured over a long period of operation.
- a turbine blade securing comprising a wedge movable in an axial direction, wherein a traction means cooperates with the wedge such that the wedge is movable in the axial direction by the traction means, wherein the wedge is formed such that the movement of the wedge in axial direction leads to a force on a turbine blade to be secured in the radial direction.
- the invention is based on the idea that the turbine blade to be secured, which is held in a blade holder, must be secured by a radially acting force.
- the traction device takes on the task of moving the wedge in the axial direction. The movement of the wedge creates a radial force that acts on the turbine blade in a radial direction. By a minimal movement of the turbine blade in the radial direction of the blade root is pressed into the blade holder. The turbine blade is thereby secured so that a tilting movement is almost avoided.
- the wedge is applied to a corresponding rotor surface contact surface. This would be an alternative way to form the turbine blade fuse. Instead of the sloping wedge surface To put on the turbine blade root, it is proposed in this advantageous development to apply the wedge to a corresponding oblique wedge surface in the blade holder. This has the advantage that the blade root does not have to be processed. In addition, this has a favorable effect on the power flow in the foot.
- a milled part which has the rotor surface contact surface. This has the advantage that the blade holder only has to be executed with a groove and that milled part can be inserted into the groove. The milled part can be prefabricated in large quantities. The blade holder can thereby be easily manufactured, since only one groove is needed.
- the traction means has a thread which engages in a complementary mating thread in the wedge.
- the traction means is developed with simple means such that it is easy to produce. The wedge moves by turning the traction mechanism. Depending on which pitch the thread has, the transmittable force on the turbine blade root is different.
- a securing segment is provided, which is designed such that an unintentional release of the traction means is prevented by the wedge. This makes it possible to safely and securely place the wedge, with a release by the securing segment should be excluded.
- the securing segment is designed as a sheet and the securing of the traction means by bending or crimping the sheet done on the traction means.
- a simple bending of the sheet is sufficient to secure the traction means.
- a securing means for exerting a spring force in the radial direction is provided.
- the locking device compensates for a groove widening for small speed ranges.
- the securing means is designed as a plate spring.
- FIG. 1 shows a perspective view of a turbine blade safety device 1.
- a turbine blade 2 comprises a blade root 3.
- the blade root 3 is designed in a known manner as Tannenbaumfuß.
- the blade root 3 is arranged in a blade holder 4.
- the blade holder 4 has a correspondingly the blade root 3 complementary formed Christmas tree shape.
- the turbine blade 2 must be secured both in the axial direction 5 and in the radial direction 6.
- the blade holder 4 may be, for example, a rotor.
- FIG. 2 shows a turbine blade securing device 1 in a sectional view.
- the turbine blade safety device 1 comprises a wedge 7 which can be moved in the axial direction 5, wherein a traction means 8 interacts with the wedge 7 such that the wedge 7 can be moved in the axial direction 5 by the traction means 8.
- the wedge 7 abuts against a turbine blade root abutment surface 9.
- the movement of the wedge 7 against the turbine blade root abutment surface 9 creates a force in the radial direction 6.
- the pulling means 8 comprises a thread 10.
- the wedge 7 accordingly has a bore 11 with a corresponding mating thread 12.
- a rotation of the traction means 8 causes a movement of the wedge 7 in the axial direction 5.
- the traction means 8 in this case has a conventional screw head 13.
- the screw head 13 may be formed as a hexagon 14 and moved with a standard open-end wrench. It can be set here a predetermined torque.
- the turbine blade guard 1 is formed with a securing segment 15.
- the securing segment 15 prevents unintentional release of the pulling means 8 from the wedge 7.
- the securing segment 15 is designed as a sheet.
- the securing of the traction means 8 takes place by bending or crimping of the sheet around the traction means 8.
- the sheet can be attached to the screw head 13 are of course bent to thereby avoid turning the traction means 8.
- the turbine blade safety device 1 also has a securing means 16, which is designed to exert a spring force in the radial direction 6.
- the securing means 16 is designed as a plate spring and arranged in a securing groove 17.
- FIG 4 is a perspective view of the blade holder to see, with the turbine blade 2 is not shown.
- the wedge 7 is elongated and arranged in a matching groove 18.
- FIG. 5 shows an alternative embodiment of the turbine blade safety device 1.
- the turbine blade 2 has been omitted, so that only the blade holder 4 can be seen.
- the blade holder 4 is in this case formed with a corresponding groove 19.
- a milled part 20 is arranged in the groove 19.
- the milled part 20 has a rotor surface contact surface 21.
- the rotor surface abutment surface 21 has substantially the same function as the turbine blade root abutment surface 9, namely to transmit a force of the wedge 7 in the radial direction 6.
- the securing means 16 is in this case arranged between the wedge 7 and the turbine blade 2.
- the securing means 16 assumes the same tasks as described for FIGS. 2 and 3.
- FIG. 8 is a perspective view of the blade holder 4 can be seen, wherein the traction means 8 and the wedge 7 and the securing means 16 are not shown.
- FIG. 8 impressively shows that the milled part 20 is easy to manufacture and can be easily mounted in the blade holder 4.
- the milled part 20 may be circular at its ends. This has the advantage that it can be minimized notch stresses.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Connection Of Plates (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
Description
Die Erfindung betrifft eine Turbinenschaufelsicherung für eine Strömungsmaschine.The invention relates to a turbine blade securing device for a turbomachine.
Schaufelbefestigungen der oben genannten Art werden in der Regel zum Befestigen von Laufschaufeln an einem Rotor einer Strömungsmaschine, wie beispielsweise einer Dampfturbine, verwendet, die bei Rotation des Rotors mit hoher Geschwindigkeit umlaufen. Durch die schnelle Rotation des Rotors werden die zugehörigen Laufschaufeln einer hohen Fliehkraft unterworfen. Der Schaufelfuß der Schaufeln ist daher hohen Kräften ausgesetzt und wird in einer Nut am Schaufelhalter stark radial nach außen gedrängt. Darüber hinaus sind die Schaufeln starken Schwingungsbelastungen ausgesetzt, so dass es an der Nut zu mechanischen Beschädigungen, Materialermüdungen, Korrosion und einer Wanderbewegung des Schaufelfußes innerhalb der Nut kommen kann.Blade fasteners of the above type are typically used for mounting blades on a rotor of a turbomachine, such as a steam turbine, which rotate at high speed during rotation of the rotor. Due to the fast rotation of the rotor, the associated blades are subjected to high centrifugal force. The blade root of the blades is therefore exposed to high forces and is strongly forced radially outward in a groove on the blade holder. In addition, the blades are exposed to strong vibration loads, so that it can come to the groove to mechanical damage, material fatigue, corrosion and migration of the blade root within the groove.
Zum Festlegen des Schaufelfußes innerhalb der Nut sind verschiedene Lösungen, wie beispielsweise Metallkeile, Federringe oder Abdichtungsstücke bekannt. Metallkeile stellen zwar sowohl axial als auch radial eine Arretierung des zugehörigen Schaufelfußes innerhalb einer Nut her, bei großen Schaufeln ist es mit solchen Metallkeilen aber schwierig, dass während der Rotation der Schaufel ausreichend Haltekräfte in radialer Richtung erzeugt werden. Tellerfedern erzeugen lediglich radiale Haltekräfte und erfordern zusätzlichen Aufwand für eine Arretierung in Längsrichtung der zugehörigen Nut. Ferner sind für Tellerfedern während der Montage aufwendige Messungen erforderlich. Als Abdichtungsstücke müssen immer zwei Teile vorgesehen sein, deren Montage darüber hinaus teilweise der Bearbeitung der Teile von Hand bedarf.For fixing the blade root within the groove, various solutions, such as metal wedges, spring washers or sealing pieces are known. Although metal wedges produce locking of the associated blade root within a groove both axially and radially, with large blades it is difficult with such metal wedges that sufficient holding forces are generated in the radial direction during the rotation of the blade. Disc springs only generate radial holding forces and require additional effort for a locking in the longitudinal direction of the associated groove. Furthermore, complex measurements are required for disc springs during assembly. As a seal pieces must always be provided two parts, the assembly also requires part of the processing of the parts by hand.
Der Erfindung liegt die Aufgabe zu Grunde eine Turbinenschaufelsicherung bereitzustellen, bei der über einen langen Betriebszeitraum hinweg eine präzise und schwingungsarme Halterung von Turbinenschaufeln in zugehörigen Schaufelhaltern sichergestellt ist.The object of the invention is to provide a turbine blade securing device in which a precise and low-vibration mounting of turbine blades in associated blade holders is ensured over a long period of operation.
Die Aufgabe wird gelöst durch eine Turbinenschaufelsicherung umfassend einen in einer axialen Richtung bewegbaren Keil, wobei ein Zugmittel derart mit dem Keil zusammenwirkt, dass der Keil durch das Zugmittel in axialer Richtung bewegbar ist, wobei der Keil derart ausgebildet ist, dass die Bewegung des Keils in axialer Richtung zu einer Kraft auf eine zu sichernde Turbinenschaufel in radialer Richtung führt.The object is achieved by a turbine blade securing comprising a wedge movable in an axial direction, wherein a traction means cooperates with the wedge such that the wedge is movable in the axial direction by the traction means, wherein the wedge is formed such that the movement of the wedge in axial direction leads to a force on a turbine blade to be secured in the radial direction.
Die Erfindung geht von dem Gedanken aus, dass die zu sichernde Turbinenschaufel, die in einem Schaufelhalter gehalten ist, durch eine radial wirkende Kraft gesichert werden muss. Das Zugmittel übernimmt hierbei die Aufgabe, den Keil in axialer Richtung zu bewegen. Durch die Bewegung des Keils entsteht eine radiale Kraft, die wirkt auf die Turbinenschaufel in einer radialen Richtung. Durch eine minimale Bewegung der Turbinenschaufel in radialer Richtung wird der Schaufelfuß in den Schaufelhalter gedrückt. Die Turbinenschaufel wird dadurch derart gesichert, dass eine Kippbewegung nahezu vermieden wird.The invention is based on the idea that the turbine blade to be secured, which is held in a blade holder, must be secured by a radially acting force. The traction device takes on the task of moving the wedge in the axial direction. The movement of the wedge creates a radial force that acts on the turbine blade in a radial direction. By a minimal movement of the turbine blade in the radial direction of the blade root is pressed into the blade holder. The turbine blade is thereby secured so that a tilting movement is almost avoided.
Vorteilhafte Weiterbildungen werden in den Unteransprüchen beschrieben. So ist es von Vorteil, wenn der Keil an einer entsprechenden Turbinenschaufelfußanlagefläche in der zu sichernden Turbinenschaufel anliegt. Dadurch ist eine Möglichkeit angegeben, den Keil und/oder die Turbinenschaufel einfach und kostengünstig herzustellen, um eine möglichst gute Kraftübertragung zu erhalten.Advantageous developments are described in the subclaims. Thus, it is advantageous if the wedge rests against a corresponding turbine blade root contact surface in the turbine blade to be secured. As a result, a possibility is specified, the wedge and / or the turbine blade simple and inexpensive to produce in order to obtain the best possible power transmission.
In einer weiteren vorteilhaften Weiterbildung wird der Keil an einer entsprechenden Rotoroberflächen-Anlegefläche angelegt. Dies wäre eine alternative Möglichkeit die Turbinenschaufelsicherung auszubilden. Statt die schräge Keilfläche an den Turbinenschaufelfuß anzulegen, wird in dieser vorteilhaften Weiterbildung vorgeschlagen, den Keil an einer entsprechenden schrägen Keilfläche im Schaufelhalter anzulegen. Dies hat den Vorteil, dass der Schaufelfuß nicht bearbeitet werden muss. Außerdem wirkt sich dies günstig auf den Kraftfluss im Fuß aus.In a further advantageous development, the wedge is applied to a corresponding rotor surface contact surface. This would be an alternative way to form the turbine blade fuse. Instead of the sloping wedge surface To put on the turbine blade root, it is proposed in this advantageous development to apply the wedge to a corresponding oblique wedge surface in the blade holder. This has the advantage that the blade root does not have to be processed. In addition, this has a favorable effect on the power flow in the foot.
In einer vorteilhaften Weiterbildung ist ein Frästeil vorgesehen, dass die Rotoroberflächen-Anlagefläche aufweist. Dies hat den Vorteil, dass der Schaufelhalter lediglich mit einer Nut ausgeführt werden muss und dass Frästeil in die Nut eingesetzt werden kann. Das Frästeil kann in großen Mengen vorgefertigt werden. Der Schaufelhalter kann dadurch einfach hergestellt werden, da lediglich eine Nut benötigt wird.In an advantageous development, a milled part is provided which has the rotor surface contact surface. This has the advantage that the blade holder only has to be executed with a groove and that milled part can be inserted into the groove. The milled part can be prefabricated in large quantities. The blade holder can thereby be easily manufactured, since only one groove is needed.
In einer weiteren vorteilhaften Weiterbildung weist das Zugmittel ein Gewinde auf, das in ein komplementäres Gegengewinde im Keil eingreift. Dadurch wird mit einfachen Mitteln das Zugmittel derart weitergebildet, dass es leicht herstellbar ist. Der Keil bewegt sich, indem das Zugmittel gedreht wird. Je nach dem welche Steigung das Gewinde hat, ist die übertragbare Kraft auf den Turbinenschaufelfuß unterschiedlich.In a further advantageous development, the traction means has a thread which engages in a complementary mating thread in the wedge. As a result, the traction means is developed with simple means such that it is easy to produce. The wedge moves by turning the traction mechanism. Depending on which pitch the thread has, the transmittable force on the turbine blade root is different.
In einer weiteren vorteilhaften Weiterbildung ist ein Sicherungssegment vorgesehen, dass derart ausgebildet, dass ein ungewolltes Lösen des Zugmittels von dem Keil verhindert ist. Dadurch wird es möglich, den Keil sicher und fest zu platzieren, wobei ein Lösen durch das Sicherungssegment ausgeschlossen werden soll.In a further advantageous embodiment, a securing segment is provided, which is designed such that an unintentional release of the traction means is prevented by the wedge. This makes it possible to safely and securely place the wedge, with a release by the securing segment should be excluded.
Vorteilhafter Weise wird das Sicherungssegment als Blech ausgeführt und die Sicherung des Zugmittels durch Umbiegen oder Umbördeln des Blechs an dem Zugmittel erfolgen. Dadurch ist es sehr einfach das Zugmittel, das selbstverständlich einen Schraubenkopf oder ähnliches aufweist, mit dem Sicherungssegment zu sichern. Ein einfaches Umbiegen des Bleches genügt um das Zugmittel zu sichern.Advantageously, the securing segment is designed as a sheet and the securing of the traction means by bending or crimping the sheet done on the traction means. This makes it very easy to secure the traction means, which of course has a screw head or the like, with the securing segment. A simple bending of the sheet is sufficient to secure the traction means.
In einer weiteren vorteilhaften Weiterbildung ist ein Sicherungsmittel zum Ausüben einer Federkraft in radialer Richtung vorgesehen. Das Sicherungsmittel kompensiert für kleine Drehzahlbereiche eine Nutaufweitung.In a further advantageous embodiment, a securing means for exerting a spring force in the radial direction is provided. The locking device compensates for a groove widening for small speed ranges.
In vorteilhafter Weise wird das Sicherungsmittel als Tellerfeder ausgebildet.Advantageously, the securing means is designed as a plate spring.
Nachfolgend wird ein Ausführungsbeispiel einer erfindungsgemäßen Schaufelbefestigung anhand der beigefügten schematischen Zeichnungen näher erläutert. Es zeigen:
- Figur 1
- eine perspektivische Darstellung der Turbinenschaufelsicherung im eingebauten Zustand,
Figur 2- eine Schnittansicht durch die Turbinenschaufelsicherung,
Figur 3- eine vergrößerte Darstellung eines Teilausschnitts aus
Figur 2, Figur 4- eine perspektivische Darstellung des Schaufelhalters ohne Turbinenschaufel,
Figur 5- eine perspektivische Darstellung einer alternativen Ausführungsform der Turbinenschaufelsicherung ohne eingebauter Turbinenschaufel,
Figur 6- eine Querschnittsansicht einer alternativen Ausführungsform der Turbinenschaufelsicherung,
Figur 7- eine vergrößerte Darstellung eines Ausschnitts aus
Figur 6, Figur 8- eine perspektivische Darstellung der Turbinenschaufelssicherung ohne Keil und ohne Turbinenschaufel.
- FIG. 1
- a perspective view of the turbine blade fuse in the installed state,
- FIG. 2
- a sectional view through the turbine blade fuse,
- FIG. 3
- an enlarged view of a partial section of Figure 2,
- FIG. 4
- a perspective view of the blade holder without turbine blade,
- FIG. 5
- a perspective view of an alternative embodiment of the turbine blade fuse without built-turbine blade,
- FIG. 6
- a cross-sectional view of an alternative embodiment of the turbine blade fuse,
- FIG. 7
- an enlarged view of a detail of Figure 6,
- FIG. 8
- a perspective view of the turbine blade securing without wedge and without turbine blade.
In der Figur 1 ist eine perspektivische Darstellung einer Turbinenschaufelsicherung 1 zu sehen. Eine Turbinenschaufel 2 umfasst einen Schaufelfuß 3. Der Schaufelfuß 3 ist in bekannter Weise als Tannenbaumfuß ausgeführt. Der Schaufelfuß 3 ist in einem Schaufelhalter 4 angeordnet. Der Schaufelhalter 4 weist entsprechend ein dem Schaufelfuß 3 komplementär ausgebildete Tannenbaumform auf. Die Turbinenschaufel 2 muss sowohl in axialer Richtung 5 als auch in radialer Richtung 6 gesichert werden. Der Schaufelhalter 4 kann beispielsweise ein Rotor sein.FIG. 1 shows a perspective view of a turbine blade safety device 1. A
In der Figur 2 ist eine Turbinenschaufelsicherung 1 in einer Schnittdarstellung zu sehen. Die Turbinenschaufelsicherung 1 umfasst einen in der axialen Richtung 5 bewegbaren Keil 7, wobei ein Zugmittel 8 derart mit dem Keil 7 zusammenwirkt, dass der Keil 7 durch das Zugmittel 8 in axialer Richtung 5 bewegbar ist. Der Keil 7 liegt an einer Turbinenschaufelfuß-Anlagefläche 9 an. Durch die Bewegung des Keils 7 gegen die Turbinenschaufelfuß-Anlagefläche 9 entsteht eine Kraft in der radialen Richtung 6.FIG. 2 shows a turbine blade securing device 1 in a sectional view. The turbine blade safety device 1 comprises a
Das Zugmittel 8 umfasst ein Gewinde 10. Der Keil 7 weist dementsprechend eine Bohrung 11 mit einem entsprechenden Gegengewinde 12 auf. Ein Drehen des Zugmittels 8 bewirkt eine Bewegung des Keils 7 in axialer Richtung 5. Das Zugmittel 8 weist hierbei einen üblichen Schraubenkopf 13 auf. Der Schraubenkopf 13 kann als Sechskant 14 ausgebildet sein und mit einem handelsüblichen Gabelschlüssel bewegt werden. Es kann hierbei ein vorbestimmtes Drehmoment eingestellt werden.The pulling means 8 comprises a
Die Turbinenschaufelsicherung 1 ist mit einem Sicherungssegment 15 ausgebildet. Das Sicherungssegment 15 verhindert ein ungewolltes Lösen des Zugmittels 8 von dem Keil 7. Dazu wird das Sicherungssegment 15 als Blech ausgeführt. Die Sicherung des Zugmittels 8 erfolgt durch Umbiegen oder Umbördeln des Blechs um das Zugmittel 8. Das Blech kann an dem Schraubenkopf 13 selbstverständlich umgebogen werden, um dadurch ein Drehen des Zugmittels 8 zu vermeiden.The turbine blade guard 1 is formed with a securing
Die Turbinenschaufelsicherung 1 weist darüber hinaus noch ein Sicherungsmittel 16 auf, das zum Ausüben einer Federkraft in der radialen Richtung 6 ausgebildet. Das Sicherungsmittel 16 ist dafür als Tellerfeder ausgebildet und in einer Sicherungsnut 17 angeordnet.The turbine blade safety device 1 also has a securing means 16, which is designed to exert a spring force in the
In der Figur 4 ist eine perspektivische Darstellung des Schaufelhalters zu sehen, wobei die Turbinenschaufel 2 nicht dargestellt ist. Der Keil 7 ist länglich ausgebildet und in einer passenden Nut 18 angeordnet.In the figure 4 is a perspective view of the blade holder to see, with the
In der Figur 5 ist eine alternative Ausführungsform der Turbinenschaufelsicherung 1 dargestellt. Allerdings wurde in der Figur 5 die Turbinenschaufel 2 weggelassen, so dass lediglich der Schaufelhalter 4 zu sehen ist. Der Schaufelhalter 4 ist hierbei mit einer entsprechenden Nut 19 ausgebildet. In die Nut 19 ist ein Frästeil 20 angeordnet. Das Frästeil 20 weist eine Rotoroberflächen-Anlagefläche 21 auf. Die Rotoroberflächen-Anlagefläche 21 hat im Wesentlichen dieselbe Funktion wie die Turbinenschaufelfuß-Anlagefläche 9, nämlich eine Kraft des Keiles 7 in radialer Richtung 6 zu übertragen.FIG. 5 shows an alternative embodiment of the turbine blade safety device 1. However, in FIG. 5 the
Das Sicherungsmittel 16 ist hierbei zwischen dem Keil 7 und der Turbinenschaufel 2 angeordnet. Das Sicherungsmittel 16 übernimmt hierbei die gleichen Aufgaben wie zur Figur 2 und 3 beschrieben.The securing means 16 is in this case arranged between the
In der Figur 5 ist der Keil 7 und das Sicherungsmittels 16 im eingebauten Zustand dargestellt.In the figure 5, the
In der Figur 6 ist eine Schnittdarstellung durch die Turbinenschaufelsicherung 1 zu sehen. Selbstverständlich ist es vorteilhaft, wenn die erfindungsgemäße Anordnung aus Zugmittel und Keil an den Enden 21, 22 angeordnet wird.In the figure 6 is a sectional view through the turbine blade fuse 1 can be seen. Of course, it is advantageous if the inventive arrangement of traction means and wedge at the
In der Figur 7 ist eine vergrößerte Darstellung der Turbinenschaufelsicherung 1 aus Figur 6 zu sehen.In the figure 7 is an enlarged view of the turbine blade fuse 1 of Figure 6 can be seen.
In der Figur 8 ist eine perspektivische Darstellung des Schaufelhalters 4 zu sehen, wobei das Zugmittel 8 und der Keil 7 sowie das Sicherungsmittel 16 nicht dargestellt sind. Die Figur 8 zeigt eindrucksvoll, dass das Frästeil 20 einfach herzustellen ist und leicht in den Schaufelhalter 4 montiert werden kann.In the figure 8 is a perspective view of the
Das Frästeil 20 kann an seinen Enden kreisförmig ausgebildet sein. Dies hat den Vorteil, dass dadurch Kerbspannungen minimiert werden können.The milled
Claims (11)
umfassend einen in einer axialen Richtung (5) bewegbaren Keil (7),
wobei ein Zugmittel (8) derart mit dem Keil (7) zusammenwirkt,
dass der Keil (7) durch das Zugmittel (8) in axialer Richtung (5) bewegbar ist,
wobei der Keil (7) derart ausgebildet ist,
dass die Bewegung des Keils (7) in axialer Richtung zu einer Kraft auf eine zu sichernde Turbineschaufel (2) in radialer Richtung (6) führt.Turbine blade safety device (1),
comprising a wedge (7) which can be moved in an axial direction (5),
wherein a traction means (8) cooperates with the wedge (7) in such a way,
the wedge (7) is movable in the axial direction (5) by the traction means (8),
wherein the wedge (7) is formed in such a way
in that the movement of the wedge (7) in the axial direction leads to a force on a turbine blade (2) to be secured in the radial direction (6).
wobei der Keil (7) an einer entsprechenden Anlagefläche (21) in der zu sichernden Turbinenschaufel (2) anliegt.Turbine blade safety device (1) according to claim 1,
wherein the wedge (7) bears against a corresponding contact surface (21) in the turbine blade (2) to be secured.
wobei der Keil (7) an einer entsprechenden Rotoroberflächen-Anlagefläche (21) anliegt.Turbine blade safety device (1) according to claim 1,
wherein the wedge (7) abuts a corresponding rotor surface abutment surface (21).
wobei ein Frästeil (20) vorgesehen ist, das die Rotoroberfläche-Anlagefläche (21) aufweist.Turbine blade safety device (1) according to claim 3,
wherein a milled part (20) is provided, which has the rotor surface-contact surface (21).
wobei das Frästeil (20) in einer entsprechenden Nut (19) eines Schaufelhalters (4) angeordnet ist.Turbine blade safety device (1) according to claim 4,
wherein the milled part (20) is arranged in a corresponding groove (19) of a blade holder (4).
wobei das Zugmittel (8) ein Gewinde (10) aufweist, das in ein komplementäres Gegengewinde (12) im Keil (7) eingreift.Turbine blade safety device (1) according to one of the preceding claims,
wherein the traction means (8) has a thread (10) which engages in a complementary mating thread (12) in the wedge (7).
wobei ein Sicherungssegment (15) vorgesehen ist, das derart ausgebildet ist, dass ein ungewolltes Lösen des Zugmittels (8) mit dem Keil (7) verhindert ist.Turbine blade safety device (1) according to one of the preceding claims,
wherein a securing segment (15) is provided, which is designed such that an unintentional release of the traction means (8) with the wedge (7) is prevented.
wobei das Sicherungssegment (15) als Blech ausgeführt ist und die Sicherung des Zugmittels (8) durch Umbiegen oder Umbördeln des Blechs an dem Zugmittel (8) erfolgt.Turbine blade safety device (1) according to claim 7,
wherein the securing segment (15) is designed as a sheet metal and the securing of the traction means (8) by bending or crimping of the sheet on the traction means (8).
wobei ein Sicherungsmittel (16) zum Ausüben einer Federkraft in radialer Richtung (6) vorgesehen ist.Turbine blade safety device (1) according to one of the preceding claims,
wherein a securing means (16) for exerting a spring force in the radial direction (6) is provided.
wobei das Sicherungsmittel (16) als Tellerfeder ausgebildet ist.Turbine blade safety device (1) according to claim 3,
wherein the securing means (16) is designed as a plate spring.
wobei das Sicherungsmittel (16) in einer Sicherungsnut (19) angeordnet ist.Turbine blade safety device (1) according to claim 9 or 10,
wherein the securing means (16) is arranged in a securing groove (19).
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06017818A EP1892380A1 (en) | 2006-08-25 | 2006-08-25 | Turbine blade retention system |
| CN2007800316835A CN101506475B (en) | 2006-08-25 | 2007-08-02 | Blade fastening means of a turbine |
| PCT/EP2007/058001 WO2008022890A1 (en) | 2006-08-25 | 2007-08-02 | Blade fastening means of a turbine |
| AT07802464T ATE459786T1 (en) | 2006-08-25 | 2007-08-02 | BLADE FIXING OF A TURBINE |
| DE502007003039T DE502007003039D1 (en) | 2006-08-25 | 2007-08-02 | BUCKLE MOUNTING OF A TURBINE |
| US12/310,412 US8192167B2 (en) | 2006-08-25 | 2007-08-02 | Blade fastening means of a turbine |
| JP2009524997A JP2010501765A (en) | 2006-08-25 | 2007-08-02 | Turbine blade fixing device |
| EP07802464A EP2076656B1 (en) | 2006-08-25 | 2007-08-02 | Blade fastening means of a turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06017818A EP1892380A1 (en) | 2006-08-25 | 2006-08-25 | Turbine blade retention system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1892380A1 true EP1892380A1 (en) | 2008-02-27 |
Family
ID=37685152
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06017818A Withdrawn EP1892380A1 (en) | 2006-08-25 | 2006-08-25 | Turbine blade retention system |
| EP07802464A Not-in-force EP2076656B1 (en) | 2006-08-25 | 2007-08-02 | Blade fastening means of a turbine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07802464A Not-in-force EP2076656B1 (en) | 2006-08-25 | 2007-08-02 | Blade fastening means of a turbine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8192167B2 (en) |
| EP (2) | EP1892380A1 (en) |
| JP (1) | JP2010501765A (en) |
| CN (1) | CN101506475B (en) |
| AT (1) | ATE459786T1 (en) |
| DE (1) | DE502007003039D1 (en) |
| WO (1) | WO2008022890A1 (en) |
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| DE102012213227B3 (en) * | 2012-07-27 | 2013-09-26 | Siemens Aktiengesellschaft | Blade ring for a turbo machine |
| EP2816196A1 (en) * | 2013-06-21 | 2014-12-24 | Siemens Aktiengesellschaft | Blade lock for turbine blades and corresponding rotor |
| WO2016116285A1 (en) * | 2015-01-20 | 2016-07-28 | Siemens Aktiengesellschaft | Blade fastening mechanism having a securing device for turbine blades |
| IT201600130088A1 (en) * | 2016-12-22 | 2018-06-22 | Nuovo Pignone Tecnologie Srl | Turbine blade and fastening set |
| FR3121954A1 (en) * | 2021-04-20 | 2022-10-21 | Safran Aircraft Engines | DEVICE FOR WHEELING A BLADE FOOT IN A CELL OF A TURBOMACHINE ROTOR DISC |
| DE102014100090B4 (en) | 2013-01-11 | 2023-06-07 | General Electric Company | Turbomachine and method of handling turbomachine components |
| FR3132078A1 (en) * | 2022-01-24 | 2023-07-28 | Safran Aircraft Engines | Fixing assembly for a blade for a turbomachine |
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| CN115773278B (en) * | 2022-12-21 | 2024-02-13 | 无锡市盛禾泰业涡轮增压器有限公司 | Multi-stage impeller structure for turbocharger |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2299060A1 (en) * | 2009-09-17 | 2011-03-23 | Siemens Aktiengesellschaft | Blade fixation with locking device for turbine blades |
| WO2011033063A1 (en) * | 2009-09-17 | 2011-03-24 | Siemens Aktiengesellschaft | Blade fastening having safety device for turbine blades |
| US8956122B2 (en) | 2009-09-17 | 2015-02-17 | Siemens Aktiengesellschaft | Blade fastening having safety device for turbine blades |
| DE102012213227B3 (en) * | 2012-07-27 | 2013-09-26 | Siemens Aktiengesellschaft | Blade ring for a turbo machine |
| WO2014016431A1 (en) | 2012-07-27 | 2014-01-30 | Siemens Aktiengesellschaft | Blade ring for a turbomachine |
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| EP2816196A1 (en) * | 2013-06-21 | 2014-12-24 | Siemens Aktiengesellschaft | Blade lock for turbine blades and corresponding rotor |
| WO2014202561A1 (en) * | 2013-06-21 | 2014-12-24 | Siemens Aktiengesellschaft | Blade fastener for turbine blades and a corresponding rotor |
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| RU2668512C1 (en) * | 2015-01-20 | 2018-10-01 | Сименс Акциенгезелльшафт | Fixing blades with safety device for turbine blades |
| US10487674B2 (en) | 2015-01-20 | 2019-11-26 | Siemens Aktiengesellschaft | Blade fastening mechanism having a securing device for turbine blades |
| WO2016116285A1 (en) * | 2015-01-20 | 2016-07-28 | Siemens Aktiengesellschaft | Blade fastening mechanism having a securing device for turbine blades |
| IT201600130088A1 (en) * | 2016-12-22 | 2018-06-22 | Nuovo Pignone Tecnologie Srl | Turbine blade and fastening set |
| EP3339579A1 (en) * | 2016-12-22 | 2018-06-27 | Nuovo Pignone Tecnologie SrL | Turbine blade and locking set |
| US10669868B2 (en) | 2016-12-22 | 2020-06-02 | Nuovo Pignone Tecnologie Srl | Turbine blade and locking set |
| FR3121954A1 (en) * | 2021-04-20 | 2022-10-21 | Safran Aircraft Engines | DEVICE FOR WHEELING A BLADE FOOT IN A CELL OF A TURBOMACHINE ROTOR DISC |
| FR3132078A1 (en) * | 2022-01-24 | 2023-07-28 | Safran Aircraft Engines | Fixing assembly for a blade for a turbomachine |
| EP4443008A1 (en) * | 2023-04-05 | 2024-10-09 | Alpinov X | Rotor for the compression of aqueous gas with blade attached to a support via at least one assembly system |
| FR3147602A1 (en) * | 2023-04-05 | 2024-10-11 | Alpinov X | Rotor for compressing aqueous gas with blade fixed to a support via at least one assembly system |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE459786T1 (en) | 2010-03-15 |
| EP2076656A1 (en) | 2009-07-08 |
| US8192167B2 (en) | 2012-06-05 |
| WO2008022890A1 (en) | 2008-02-28 |
| JP2010501765A (en) | 2010-01-21 |
| CN101506475B (en) | 2013-01-23 |
| DE502007003039D1 (en) | 2010-04-15 |
| EP2076656B1 (en) | 2010-03-03 |
| US20090324414A1 (en) | 2009-12-31 |
| CN101506475A (en) | 2009-08-12 |
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