EP0206107A2 - Hybrid metal-ceramic turbine vane - Google Patents

Hybrid metal-ceramic turbine vane Download PDF

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Publication number
EP0206107A2
EP0206107A2 EP86107927A EP86107927A EP0206107A2 EP 0206107 A2 EP0206107 A2 EP 0206107A2 EP 86107927 A EP86107927 A EP 86107927A EP 86107927 A EP86107927 A EP 86107927A EP 0206107 A2 EP0206107 A2 EP 0206107A2
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EP
European Patent Office
Prior art keywords
core
blade
pin
insulator
shirt
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.)
Granted
Application number
EP86107927A
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German (de)
French (fr)
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EP0206107B1 (en
EP0206107A3 (en
Inventor
Werner Dr.-Ing. Hüther
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines GmbH
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MTU Motoren und Turbinen Union Muenchen GmbH
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Publication of EP0206107A2 publication Critical patent/EP0206107A2/en
Publication of EP0206107A3 publication Critical patent/EP0206107A3/en
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Publication of EP0206107B1 publication Critical patent/EP0206107B1/en
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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
    • F01D5/3084—Fixing blades to rotors; Blade roots ; Blade spacers the blades being made of ceramics

Definitions

  • the invention relates to a hybrid blade, in particular a guide or rotor blade of a turbomachine composed of metal-ceramic, the more temperature-resistant material forming the inner part.
  • composite blades are already known from DE-OS 28 34 843 and DE-PS 28 34 846.
  • DE-OS 3110096 describes a blade with the features of the preamble of claim 1. Proceeding from this, the object of the invention is to create a blade which can compensate for the different thermal expansion coefficients of the metallic core and the ceramic jacket, depending on the material used, allows a large core cross section and avoids local stress peaks in the ceramic jacket and both are easy to machine are. This object is achieved by the features of the characterizing part of claim 1.
  • the solution according to the invention is that the pin (7) is formed in one piece with the blade casing (4), that the core (1) is designed in a U-shape so that its leg ends over the pin (7) in the longitudinal direction of the blade can be inserted into the blade root (5), after which the base of the core (1) rests on the pin (7) with the interposition of an insulator (3) and the leg ends of the core (2) are fixed in the blade root (5) so that they cannot be detached.
  • the main advantage of the invention is that the ceramic is under pressure in the transition area metal / ceramic. This transition area is relatively small, so that thermal expansion can be controlled safely. In addition, the heat transfer from the jacket to the core is reduced, both of which are easy to machine.
  • the outer shirt-like part consists of ceramic, in particular of fiber-reinforced ceramic such as SiC fibers in SiC or SiC fibers in Si 3 N 4 or carbon fiber reinforced carbon with a silicon carbide protective layer.
  • the core has the reference number 1, it is in one piece, U-shaped and penetrated by a slot 2 which extends in the longitudinal direction of the blade and does not extend over the entire length, as shown in FIG. 3, but ends earlier at a base.
  • the width of the slot is dimensioned such that it can accommodate the insulator 3, shown in FIG. 2, which serves the connection between the core 1 and the jacket 4.
  • the jacket 4 has a greater height than the core and a cavity 8 in the central area for receiving the core 1.
  • the foot is designated 5 and receives the shirt 4 in a recess 6.
  • the jacket has a pin 7 in the slot 2 comes to rest.
  • the foot 5 for example a dovetail foot or a fir tree foot, also receives the U-shaped core 1 in the center at the other side.
  • It is preferably made of metallic Material, made the same or similar to the core 1, preferably by eroding from solid material. It can also be produced in an investment casting process.
  • the jacket 4 made of high-temperature-resistant ceramic is preferably produced by injection molding a sinterable SiC material or Si 3N4 or by cold isostatic pressing of a ceramic powder in a mold with a core and subsequent processing of the green compact to the almost final shape.
  • the core 1 is produced, for example, by investment casting, if desired, post-processing by grinding is possible.
  • the core can also be eroded from solid, in particular metallic material, or can be produced in single crystal by directional solidification in the casting process.
  • the slot 2 which is produced in the usual way, for example by milling, is ground on its contact surfaces with the insulator 3 and the pin 7.
  • Another fine processing can also be used, which is suitable for delivering smooth parallel surfaces, as are also desired on the insulator. This should enable a slight displacement of the jacket and core due to thermal expansion during operation.
  • the parallelism of the contact surfaces to each other should be less than 0.5 ⁇ m, for example.
  • the insulator 3 should preferably consist of partially stabilized zirconium oxide as a high-temperature-resistant ceramic, in particular Y 2 0 3 in Z r0 2 .
  • the baffle 9 can also serve as radiation protection, i.e. it shields the core 1 from heat transfer from the blade casing 4.
  • the guide plate 9 does not touch the jacket 4, but is fastened, in particular soldered, at a distance from the jacket and core in the base 5 (FIG. 6).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Hybridschaufel aus Metall/Keramik wie hemd- und kappenartigen äußeren Teil aus Keramik, von einem Isolationsstift einfach und sicher gehalten auf dem metallischen Kern.Hybrid shovel made of metal / ceramic such as shirt-like and cap-like outer part made of ceramic, simply and securely held on the metallic core by an insulation pin.

Description

Die Erfindung betrifft eine Hybridschaufel,insbesondere eine Leit- oder Laufschaufel einer Strömungsmaschine aus Metall-Keramik zusammengesetzt, wobei das temperaturfestere Material das innere Teil bildet. Es sind in dieser Art zusammengesetzte Schaufeln bereits bekannt aus DE-OS 28 34 843 und DE-PS 28 34 846.The invention relates to a hybrid blade, in particular a guide or rotor blade of a turbomachine composed of metal-ceramic, the more temperature-resistant material forming the inner part. In this type, composite blades are already known from DE-OS 28 34 843 and DE-PS 28 34 846.

In diesen Fällen kann es im Bereich der Querstifte zu lokalen Spannungsspitzen kommen, die die Bruchgefahr erhöhen, wie sie sich bei dem bekannten Aufbau von Hybridschaufeln ergibt aus

  • a) der unterschiedlichen Wärmedehnung von keramischem Hemd und Metallkern im jeweiligen Bereich einer Anlage- oder Anlagefläche,
  • b) daß die Auflagefläche einen innen umlaufenden Wulst hat und so einen relativ kleinen Kernquerschnitt bedingt,
  • c) daß die kleine Anlagefläche sich im Keramikhemd befindet und eine genaue Bearbeitung äußerst schwierig ist.
In these cases, local stress peaks can occur in the area of the transverse pins, which increase the risk of breakage, which results from the known structure of hybrid blades
  • a) the different thermal expansion of the ceramic shirt and metal core in the respective area of a contact or contact surface,
  • b) that the contact surface has an inner circumferential bead and thus requires a relatively small core cross section,
  • c) that the small contact surface is in the ceramic shirt and precise machining is extremely difficult.

In der DE-OS 3110096 ist eine Schaufel mit den Merkmalen des Oberbegriffs von Anspruch 1 beschrieben. Ausgehend hiervon stellt sich für die Erfindung die Aufgabe, eine Schaufel zu schaffen, die die unterschiedlichen thermischen Ausdehnungskoeffizienten von metallischem Kern und keramischem Mantel - abhängig vom verwendeten Material - ausgleichen läßt, einen großen Kernquerschnitt gestattet und lokale Spannungsspitzen im keramischen Mantel vermeidet und beide leicht bearbeitbar sind. Gelöst wird diese Aufgabe durch die Merkmale des Kennzeichens von Anspruch 1.DE-OS 3110096 describes a blade with the features of the preamble of claim 1. Proceeding from this, the object of the invention is to create a blade which can compensate for the different thermal expansion coefficients of the metallic core and the ceramic jacket, depending on the material used, allows a large core cross section and avoids local stress peaks in the ceramic jacket and both are easy to machine are. This object is achieved by the features of the characterizing part of claim 1.

Die Lösung gemäß der Erfindung besteht darin, daß der Stift (7) mit dem Schaufelmantel (4) einstückig ausgebildet ist, daß der Kern (1) so U-förmig gestaltet ist, daß er mit seinen Schenkelenden über den Stift (7) in Schaufellängsrichtung in den Schaufelfuß (5) einschiebbar ist, wonach die Basis des Kerns (1) unter Zwischenlage eines Isolators (3) auf dem Stift (7) aufliegt und die Schenkelenden des Kerns (2) im Schaufelfuß (5) unlösbar festgelegt werden.The solution according to the invention is that the pin (7) is formed in one piece with the blade casing (4), that the core (1) is designed in a U-shape so that its leg ends over the pin (7) in the longitudinal direction of the blade can be inserted into the blade root (5), after which the base of the core (1) rests on the pin (7) with the interposition of an insulator (3) and the leg ends of the core (2) are fixed in the blade root (5) so that they cannot be detached.

Der wesentliche Vorteil der Erfindung ist darin zu sehen, daß im Übergangsbereich Metall/Keramik die Keramik druckbelastet ist. Dieser Übergangsbereich ist verhältnismäßig klein, so daß eine Wärmedehnung gefahrlos beherrschbar ist. Außerdem ist der Wärmeübergang vom Mantel auf den Kern verringert.Beide sind leicht bearbeitbar.The main advantage of the invention is that the ceramic is under pressure in the transition area metal / ceramic. This transition area is relatively small, so that thermal expansion can be controlled safely. In addition, the heat transfer from the jacket to the core is reduced, both of which are easy to machine.

Weitere Ausgestaltungen der Erfindung sind in Unteransprüchen, der Beschreibung und Zeichnung eines Ausführungsbeispiels zu entnehmen. Für den metallischen Schaufelfuß und den metallischen Kern eignen sich Superlegierungen, Nickelbasislegierungen, Titanbasislegierungen und andere. Das äußere hemdartige Teil besteht aus Keramik insbesondere aus faserverstärkter Keramik wie SiC-Fasern in SiC oder SiC-Fasern in Si3N4 oder Kohlenstoffaser verstärkter Kohlenstoff mit einer Siliziumkarbidschutzschicht.Further embodiments of the invention can be found in the subclaims, the description and the drawing of an exemplary embodiment. Super alloys, nickel-based alloys, titanium-based alloys and others are suitable for the metallic blade root and the metallic core. The outer shirt-like part consists of ceramic, in particular of fiber-reinforced ceramic such as SiC fibers in SiC or SiC fibers in Si 3 N 4 or carbon fiber reinforced carbon with a silicon carbide protective layer.

In der beigefügten Zeichnung ist ein Ausführungsbeispiel der Erfindung rein schematisch dargestellt.In the accompanying drawing, an embodiment of the invention is shown purely schematically.

Es zeigen:

  • Fig. 1 Ansicht der neuartigen Hybridschaufel
  • Fig. 2 den Isolator als Zwischenlager
  • Fig. 3 den Kern der Hybridschaufel
  • Fig. 4 den Mantel der Hybridschaufel
  • Fig. 5 den Schaufelfuß
  • Fig. 6 einen Längsschnitt
  • Fig. 7 einen Querschnitt durch die Schaufel
Show it:
  • Fig. 1 view of the novel hybrid blade
  • Fig. 2 shows the insulator as an intermediate storage
  • Fig. 3 shows the core of the hybrid blade
  • Fig. 4 the jacket of the hybrid blade
  • Fig. 5 the blade root
  • Fig. 6 shows a longitudinal section
  • Fig. 7 shows a cross section through the blade

Der Kern hat das Bezugszeichen 1, er ist einstückig, U-förmig und von einem Schlitz 2 durchsetzt, der sich in Längsrichtung der Schaufel erstreckt und nicht über die gesamte Länge geht, wie Fig. 3 zeigt, sondern an einer Basis früher endet. Die Breite des Schlitzes ist so bemessen, daß sie den Isolator 3, dargestellt in Fig. 2, der der Verbindung zwischen Kern 1 und Mantel 4 dient, aufnehmen kann. Der Mantel 4 hat eine größere Höhe als der Kern und einen Hohlraum 8 im Zentralbereich für die Aufnahme des Kerns 1. Der Fuß ist mit 5 bezeichnet und nimmt das Hemd 4 auf in einer Ausnehmung 6. Der Mantel hat einen Stift 7, der im Schlitz 2 zu liegen kommt.The core has the reference number 1, it is in one piece, U-shaped and penetrated by a slot 2 which extends in the longitudinal direction of the blade and does not extend over the entire length, as shown in FIG. 3, but ends earlier at a base. The width of the slot is dimensioned such that it can accommodate the insulator 3, shown in FIG. 2, which serves the connection between the core 1 and the jacket 4. The jacket 4 has a greater height than the core and a cavity 8 in the central area for receiving the core 1. The foot is designated 5 and receives the shirt 4 in a recess 6. The jacket has a pin 7 in the slot 2 comes to rest.

Der Fuß 5 z.B. ein Schwalbenschwanzfuß oder ein Tannenbaumfuß nimmt auch den U-förmigen Kern 1 umgekehrt in seinem Zentrum auf. Er ist bevorzugt aus metallischem Material, gleich oder ähnlich wie der Kern 1 hergestellt, bevorzugt durch Erodieren aus Vollmaterial. Er kann auch in einem Feingußverfahren hergestellt werden.The foot 5, for example a dovetail foot or a fir tree foot, also receives the U-shaped core 1 in the center at the other side. It is preferably made of metallic Material, made the same or similar to the core 1, preferably by eroding from solid material. It can also be produced in an investment casting process.

Der Mantel 4 aus hochtemperaturfester Keramik wird vorzugsweise hergestellt durch Spritzguß eines sinterfähigen SiC-Materials oder Si 3N4 oder durch kaltisostatisches Pressen eines Keramikpulvers in einer Form mit Kern und nachfolgender Bearbeitung des Grünlings zur Beinaheendform.The jacket 4 made of high-temperature-resistant ceramic is preferably produced by injection molding a sinterable SiC material or Si 3N4 or by cold isostatic pressing of a ceramic powder in a mold with a core and subsequent processing of the green compact to the almost final shape.

Der Kern 1 wird beispielsweise hergestellt durch Feinguß gewünschtenfalls ist eine Nachbearbeitung durch Schleifen möglich. Der Kern kann auch aus vollem, insbesondere metallischen Material erodiert werden oder einkristallin durch gerichtete Erstarrung im Gießverfahren hergestellt werden. Der Schlitz 2 der darin in üblicher Weise z.B. durch Fräsen hergestellt wird, wird an seinen Berührungsflächen mit dem Isolator 3 und dem Stift 7 geschliffen. Aber auch eine andere Feinbearbeitung ist anwendbar, die geeignet ist, glatte Parallelflächen zu liefern wie sie auch an dem Isolator gewünscht sind. Es soll hierdurch eine leichte Verschiebung von Mantel und Kern infolge Wärmedehnung im Betrieb ermöglicht werden. Die Parallelität der Auflageflächen zueinander sollte z.B. kleiner als 0,5µm sein. Der Isolator 3 sollte bevorzugt aus teilstabilisiertem Zirkonoxid als hochtemperaturfeste Keramik bestehen, insbesondere Y203 in Zr02. The core 1 is produced, for example, by investment casting, if desired, post-processing by grinding is possible. The core can also be eroded from solid, in particular metallic material, or can be produced in single crystal by directional solidification in the casting process. The slot 2 which is produced in the usual way, for example by milling, is ground on its contact surfaces with the insulator 3 and the pin 7. Another fine processing can also be used, which is suitable for delivering smooth parallel surfaces, as are also desired on the insulator. This should enable a slight displacement of the jacket and core due to thermal expansion during operation. The parallelism of the contact surfaces to each other should be less than 0.5 µm, for example. The insulator 3 should preferably consist of partially stabilized zirconium oxide as a high-temperature-resistant ceramic, in particular Y 2 0 3 in Z r0 2 .

Die Montage der neuen Hybridschaufel ist wie folgt:

  • Zunächst kommt der Isolator 3 auf dem Stift 7 des Schaufelmantels am oberen Ende des Schlitzes 2 zu liegen, wenn der U-förmige Kern umgekehrt in Schaufellängsrichtung von oben in den Mantel 4 hineingeschoben wird. Der Isolator 3 kann jetzt nicht mehr herausfallen. Mantel 4 und Kern 1 werden zusammengehalten und in den Schaufelfuß 5 hineingeschoben.
The assembly of the new hybrid bucket is as follows:
  • First, the insulator 3 comes to rest on the pin 7 of the blade casing at the upper end of the slot 2 when the U-shaped core is pushed into the jacket 4 from above in the longitudinal direction of the blade. The insulator 3 can no longer fall out. Sheath 4 and core 1 are held together and pushed into the blade root 5.

Danach werden Kern 1 und Fuß 5 von der Unterseite des Fußes her miteinander fest verbunden.Then core 1 and foot 5 are firmly connected to each other from the bottom of the foot.

Es ist statt der dargestellten Ausführung auch möglich, den Kern 1 bis zur Spitze des Mantels 4 hin konisch zulaufen zu lassen, was eine Gewichtsersparnis und Entlastung des schaufelseitigen Endes des Kernes zur Folge hat. Zwischen Mantel 4 und Kern 1 kann noch ein Leitblech 9 oder dergl. Element zur Führung von Kühlluft durch die (nicht dargestellte) Radnabe und/oder Turbinenscheibe (Rotor) und durch den Fuß 5 in den Zwischenraum 10 der dann als Kühlluftkanal dient und einen Teil des Hohlraums 8 bildet (Fig. 5).Instead of the embodiment shown, it is also possible to let the core 1 taper conically up to the tip of the jacket 4, which results in a weight saving and relief of the end of the core on the blade side. Between the jacket 4 and the core 1, a baffle 9 or the like. Element for guiding cooling air through the (not shown) wheel hub and / or turbine disc (rotor) and through the foot 5 into the intermediate space 10, which then serves as a cooling air duct and a part of the cavity 8 forms (Fig. 5).

Das Leitblech 9 kann zugleich dem Strahlungsschutz dienen, d.h. es schirmt den Kern 1 vor Wärmeübergang vom Schaufelmantel 4 ab. Das Leitblech 9 berührt den Mantel 4 nicht, sondern ist mit Abstand zu Mantel und Kern im Fuß 5 befestigt, insbesondere eingelötet (Fig. 6).The baffle 9 can also serve as radiation protection, i.e. it shields the core 1 from heat transfer from the blade casing 4. The guide plate 9 does not touch the jacket 4, but is fastened, in particular soldered, at a distance from the jacket and core in the base 5 (FIG. 6).

Claims (19)

1. Schaufel für Strömungsmaschinen mit einem mit dem Schaufelfuß verbundenen metallischen Kern und einem diesen mit Abstand umgebenden keramischen Schaufelmantel, der über einen den Kern durchquerenden keramischen Stift mit dem Kern verbunden ist, dadurch gekennzeichnet, daß der Stift (7) mit dem Schaufelmantel (4) einstückig ausgebildet ist, daß der Kern (1) U-förmig gestaltet ist, daß er mit seinen Schenkelenden über den Stift (7) in Schaufellängsrichtung in den Schaufelmantel (4) soweit einschiebbar ist, daß die Basis des Kerns (1) unter Zwischenlage eines Isolators (3) auf dem Stift (7) aufliegt und die Schenkelenden des Kerns (2) im Schaufelfuß (5) unlösbar festgelegt sind.1. A blade for turbomachines with a metallic core connected to the blade root and a ceramic blade shell surrounding it at a distance, which is connected to the core by a ceramic pin passing through the core, characterized in that the pin (7) with the blade shell (4 ) is formed in one piece so that the core (1) is U-shaped so that it can be inserted with its leg ends over the pin (7) in the longitudinal direction of the blade into the blade shell (4) to such an extent that the base of the core (1) with an intermediate layer an insulator (3) rests on the pin (7) and the leg ends of the core (2) in the blade root (5) are non-detachably fixed. 2. Schaufel nach Anspruch 1, dadurch gekennzeichnet, daß der eingelegte Isolator ein feinbearbeitetes insbesondere geschliffenes Stück mit Parallelflächen zur den Anlageflächen in Bezug auf Kern bzw. Stift ausgebildet ist (für leichten Schiebesitz).2. Blade according to claim 1, characterized in that the inserted insulator is a finely machined, in particular ground piece with parallel surfaces to the contact surfaces in relation to the core or pin (for easy sliding fit). 3. Schaufel nach Anspruch 1, dadurch gekennzeichnet, daß der Kern mit einem Schaufelfuß verlötet ist.3. Blade according to claim 1, characterized in that the core is soldered to a blade root. 4. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kern aus einem Metall oder einer Metallegierung, einer Superlegierung oder dergleichen besteht.4. Blade according to one of the preceding claims, characterized in that the core consists of a metal or a metal alloy, a superalloy or the like. 5. Schaufel nach Anspruch 4, dadurch gekennzeichnet, daß der Kern aus einem Feingußteil,insbesondere mit gerichteter Erstarrung besteht.5. Bucket according to claim 4, characterized in that the core consists of an investment casting, in particular with directional solidification. 6. Schaufel nach Anspruch 4, dadurch gekennzeichnet, daß der Kern einkristallin ist.6. Blade according to claim 4, characterized in that the core is single crystal. 7. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Hemd aus einer Hochtemperaturkeramik wie faserverstärktem Siliziumkarbid oder Siliziumnitrid besteht.7. Bucket according to one of the preceding claims, characterized in that the shirt consists of a high-temperature ceramic such as fiber-reinforced silicon carbide or silicon nitride. 8. Schaufel nach Anspruch 7, dadurch gekennzeichnet, daß das Hemd durch Spritzguß hergestellt ist.8. A scoop according to claim 7, characterized in that the shirt is made by injection molding. 9. Schaufel nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß das Hemd aus einem Hochtemperaturkeramikpulver insbesondere SiC oder Si3N4 geformt ist.9. Scoop according to claim 1 to 5, characterized in that the shirt is formed from a high temperature ceramic powder, in particular SiC or Si 3 N 4 . 10. Schaufel nach Anspruch 9, dadurch gekennzeichnet, daß das Hemd kalt isostatisch gepreßt und grün bearbeitet ist.10. A shovel according to claim 9, characterized in that the shirt is cold isostatically pressed and processed green. 11. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Isolator aus einem teilstabilisierten Zirkonoxid besteht, bei dem alle Auflageflächen geschliffen sind.11. Blade according to one of the preceding claims, characterized in that the insulator consists of a partially stabilized zirconium oxide, in which all the bearing surfaces are ground. 12. Hybridschaufel nach Anspruch 1, dadurch gekennzeichnet, daß der Kern konisch vom Schaufelfuß zur Schaufelspitze zulaufend ausgeführt ist.12. Hybrid blade according to claim 1, characterized in that the core is tapered from the blade root to the blade tip. 13. Schaufel nach Anspruch 1, dadurch gekennzeichnet, daß ein Strahlungsschutz zwischen Kern und Mantel angeordnet ist und dieses Leitblech den Mantel nicht berührt.13. A blade according to claim 1, characterized in that radiation protection is arranged between the core and the jacket and this baffle does not touch the jacket. 14. Schaufel nach Anspruch 13, dadurch gekennzeichnet, daß zwischen Kern und Leitblech Kühlluft einführbar ist und/oder der Kern kühlbar ist.14. A blade according to claim 13, characterized in that cooling air can be introduced between the core and the guide plate and / or the core can be cooled. 15. Schaufel nach Anspruch 14, dadurch gekennzeichnet, daß in dem Kern längsgerichtete durchgehende Kühlkanäle angeordnet sind.15. A blade according to claim 14, characterized in that longitudinal continuous cooling channels are arranged in the core. 16. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schlitz im Kern zur Aufnahme von Isolator und Stift des Hemdes eine größere Breite besitzt und eine erheblich größere Länge bzw. Tiefe als Isolator und Stift.16. Bucket according to one of the preceding claims, characterized in that the slot in the core for receiving the insulator and pin of the shirt has a greater width and a considerably greater length or depth than the insulator and pin. 17. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Stift einen rechteckförmigen Querschnitt aufweist, der hochkantig im Schlitz angeordnet ist.17. Bucket according to one of the preceding claims, characterized in that the pin has a rectangular cross section, which is arranged in the slot in the upright position. 18. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Isolator auf dem Stift im zusammengebauten Zustand im Gleit- oder Schiebesitz angeordnet ist.18. Bucket according to one of the preceding claims, characterized in that the insulator is arranged on the pin in the assembled state in the sliding or sliding seat. 19. Schaufel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der zwischen Kern und Hemd einlegbare Isolator in Quaderform mit quadratischem Querschnitt ausgebildet ist.19. A blade according to one of the preceding claims, characterized in that the insulator which can be inserted between the core and the shirt is formed in a cuboid shape with a square cross section.
EP86107927A 1985-06-19 1986-06-10 Hybrid metal-ceramic turbine vane Expired EP0206107B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3521782 1985-06-19
DE19853521782 DE3521782A1 (en) 1985-06-19 1985-06-19 HYBRID SHOVEL MADE OF METAL AND CERAMIC

Publications (3)

Publication Number Publication Date
EP0206107A2 true EP0206107A2 (en) 1986-12-30
EP0206107A3 EP0206107A3 (en) 1987-04-29
EP0206107B1 EP0206107B1 (en) 1988-08-17

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Application Number Title Priority Date Filing Date
EP86107927A Expired EP0206107B1 (en) 1985-06-19 1986-06-10 Hybrid metal-ceramic turbine vane

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US (1) US4645421A (en)
EP (1) EP0206107B1 (en)
JP (1) JPS6248903A (en)
DE (2) DE3521782A1 (en)

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EP2853688A3 (en) * 2013-09-30 2015-07-22 MTU Aero Engines GmbH Blade for a gas turbine

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JP2834125B2 (en) * 1987-10-23 1998-12-09 財団法人電力中央研究所 Multi-layer thermal insulation structure
US4790721A (en) * 1988-04-25 1988-12-13 Rockwell International Corporation Blade assembly
JP2602929B2 (en) * 1988-11-21 1997-04-23 株式会社東芝 Blade structure of turbomachine
US5854525A (en) * 1993-07-30 1998-12-29 Jeumont Industrie Jacketed rotary machine
FR2766157B1 (en) * 1997-07-15 1999-10-01 Eurocopter France THERMAL PROTECTION DEVICE FOR ELASTOMERIC ORGANS, SET OF SUCH DEVICES FOR THE PROTECTION IN COLD WEATHER OF A ROTORCRAFT ROTOR, AND ROTORCRAFT ROTOR EQUIPPED WITH SUCH A SET
US6572372B1 (en) * 2000-04-25 2003-06-03 Align Technology, Inc. Embedded features and methods of a dental appliance
WO2000053896A1 (en) * 1999-03-09 2000-09-14 Siemens Aktiengesellschaft Turbine blade and method for producing a turbine blade
US6514046B1 (en) 2000-09-29 2003-02-04 Siemens Westinghouse Power Corporation Ceramic composite vane with metallic substructure
US6709230B2 (en) * 2002-05-31 2004-03-23 Siemens Westinghouse Power Corporation Ceramic matrix composite gas turbine vane
US6648597B1 (en) 2002-05-31 2003-11-18 Siemens Westinghouse Power Corporation Ceramic matrix composite turbine vane
US9068464B2 (en) * 2002-09-17 2015-06-30 Siemens Energy, Inc. Method of joining ceramic parts and articles so formed
US7093359B2 (en) 2002-09-17 2006-08-22 Siemens Westinghouse Power Corporation Composite structure formed by CMC-on-insulation process
US7080971B2 (en) * 2003-03-12 2006-07-25 Florida Turbine Technologies, Inc. Cooled turbine spar shell blade construction
US7435058B2 (en) * 2005-01-18 2008-10-14 Siemens Power Generation, Inc. Ceramic matrix composite vane with chordwise stiffener
DE102007012320A1 (en) * 2007-03-09 2008-09-11 Rolls-Royce Deutschland Ltd & Co Kg Turbine blade with blade-formed microturbine nozzle
US8075280B2 (en) * 2008-09-08 2011-12-13 Siemens Energy, Inc. Composite blade and method of manufacture
CH700071A1 (en) * 2008-12-12 2010-06-15 Alstom Technology Ltd Moving blade for a gas turbine.
US8007242B1 (en) 2009-03-16 2011-08-30 Florida Turbine Technologies, Inc. High temperature turbine rotor blade
US8256088B2 (en) * 2009-08-24 2012-09-04 Siemens Energy, Inc. Joining mechanism with stem tension and interlocked compression ring
US10605086B2 (en) 2012-11-20 2020-03-31 Honeywell International Inc. Turbine engines with ceramic vanes and methods for manufacturing the same
WO2014149116A2 (en) 2013-02-23 2014-09-25 Shuck Quinlan Y Gas turbine engine component
US10724380B2 (en) * 2017-08-07 2020-07-28 General Electric Company CMC blade with internal support
US10612399B2 (en) 2018-06-01 2020-04-07 Rolls-Royce North American Technologies Inc. Turbine vane assembly with ceramic matrix composite components
US10808560B2 (en) 2018-06-20 2020-10-20 Rolls-Royce Corporation Turbine vane assembly with ceramic matrix composite components
US20200248568A1 (en) * 2019-02-01 2020-08-06 Rolls-Royce Plc Turbine vane assembly with ceramic matrix composite components and temperature management features
US20220090504A1 (en) * 2020-09-24 2022-03-24 General Electric Company Rotor blade for a gas turbine engine having a metallic structural member and a composite fairing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2187032A5 (en) * 1972-05-29 1974-01-11 Berry Sa Ets
GB2027495A (en) * 1978-08-09 1980-02-20 Mtu Muenchen Gmbh Turbine blade
DE2834843A1 (en) * 1978-08-09 1980-06-26 Motoren Turbinen Union COMPOSED CERAMIC GAS TURBINE BLADE
DE3110096A1 (en) * 1981-03-16 1982-09-23 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Turbine blade, especially turbine rotor blade for gas turbine engines
EP0118020A1 (en) * 1983-02-26 1984-09-12 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Ceramic turbine blade with a supporting metal core

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR999820A (en) * 1946-01-11 1952-02-05 Improvements to gas turbines
US4247259A (en) * 1979-04-18 1981-01-27 Avco Corporation Composite ceramic/metallic turbine blade and method of making same
FR2463849A1 (en) * 1979-08-23 1981-02-27 Onera (Off Nat Aerospatiale) Blade for gas turbine rotor - has outer ceramic liner fitted over metal core and held by enlarged head and pin into rotor root fixing
US4519745A (en) * 1980-09-19 1985-05-28 Rockwell International Corporation Rotor blade and stator vane using ceramic shell
DE3129304A1 (en) * 1981-07-24 1983-02-10 MTU Motoren- und Turbinen-Union München GmbH, 8000 München "TURBINE BLADE INFLUED BY HOT GAS"
DE3203869C2 (en) * 1982-02-05 1984-05-10 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Turbine rotor blades for turbo machines, in particular gas turbine engines
FR2538029A1 (en) * 1982-12-15 1984-06-22 Onera (Off Nat Aerospatiale) IMPROVEMENTS TO CERAMIC, ROTATING OR FIXED BLADES OF TURBOMACHINES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2187032A5 (en) * 1972-05-29 1974-01-11 Berry Sa Ets
GB2027495A (en) * 1978-08-09 1980-02-20 Mtu Muenchen Gmbh Turbine blade
DE2834843A1 (en) * 1978-08-09 1980-06-26 Motoren Turbinen Union COMPOSED CERAMIC GAS TURBINE BLADE
DE3110096A1 (en) * 1981-03-16 1982-09-23 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Turbine blade, especially turbine rotor blade for gas turbine engines
EP0118020A1 (en) * 1983-02-26 1984-09-12 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Ceramic turbine blade with a supporting metal core

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853688A3 (en) * 2013-09-30 2015-07-22 MTU Aero Engines GmbH Blade for a gas turbine

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EP0206107B1 (en) 1988-08-17
US4645421A (en) 1987-02-24
DE3521782A1 (en) 1987-01-02
EP0206107A3 (en) 1987-04-29
JPS6248903A (en) 1987-03-03
DE3660556D1 (en) 1988-09-22

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