EP1028229A1 - Turbomachine blade - Google Patents

Turbomachine blade Download PDF

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Publication number
EP1028229A1
EP1028229A1 EP99810111A EP99810111A EP1028229A1 EP 1028229 A1 EP1028229 A1 EP 1028229A1 EP 99810111 A EP99810111 A EP 99810111A EP 99810111 A EP99810111 A EP 99810111A EP 1028229 A1 EP1028229 A1 EP 1028229A1
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EP
European Patent Office
Prior art keywords
platform
base point
parallelogram
edge base
deflection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99810111A
Other languages
German (de)
French (fr)
Other versions
EP1028229B1 (en
Inventor
Jörgen Ferber
Rudof Dr. Kellerer
Mark Mccarthy
Beat Von Arx
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.)
General Electric Technology GmbH
Original Assignee
ABB Alstom Power Switzerland Ltd
Alstom Power Schweiz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Alstom Power Switzerland Ltd, Alstom Power Schweiz AG filed Critical ABB Alstom Power Switzerland Ltd
Priority to DE59912578T priority Critical patent/DE59912578D1/en
Priority to EP99810111A priority patent/EP1028229B1/en
Priority to US09/499,399 priority patent/US6343914B1/en
Publication of EP1028229A1 publication Critical patent/EP1028229A1/en
Application granted granted Critical
Publication of EP1028229B1 publication Critical patent/EP1028229B1/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
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/80—Platforms for stationary or moving blades

Definitions

  • the invention relates to a component of a turbomachine, in essentially consisting of a flow deflection device, which in a foot area is connected to a platform, the penetration the flow deflection device with the platform through a pressure side Profile line, a suction-side profile line, and a leading edge base point and there is a trailing edge base point, and wherein the top view of FIG Platform essentially in the form of a parallelogram with an attached to it arranged circumferential nose shows.
  • the blades of modern gas turbines are subject to high mechanical ones Loads due to centrifugal forces, aerodynamic forces, and Thermal stresses.
  • the Blade transition i.e. the area in which the actual Transfer flow deflection devices into the platforms. At this point must be the entire moment induced by aerodynamic forces are transferred, and with rotor blades there is also their centrifugal force to keep.
  • At high hot gas temperatures and especially when the Components are cooled, is in the area of transition from the Shovel to the platform continues to expect high temperature gradients.
  • such platforms of blades usually pose as Parallelograms represent the two sides in the circumferential direction of the machine are oriented, while the other two sides are roughly in the direction of the mean flow angle. Most is on a downstream End arranged a circumferential nose.
  • the noses of one platform each engage in a corresponding one Recess of another component, and thus seal the space between the Platforms in the direction of flow.
  • the line of penetration lies within the area thus described Vane, essentially by a suction side and pressure side Profile line and a trailing edge base point and a leading edge base point is to be characterized.
  • the platforms bear on their underside Devices to the components in the housing or on the shaft too anchor, and therefore represent quite massive and therefore also rigid structures.
  • Support points are here the base points of the rear edge and front edge, as well as the suction side Profile line, in the area of the maximum curvature.
  • the invention seeks to remedy this.
  • the aim of the invention is in a Component of a fluid flow machine, consisting essentially of a Flow deflection device, which in a foot area with a platform is connected, the penetration of the flow deflecting device with the platform through a pressure side profile line, a suction side profile line, and a leading edge base point and a trailing edge base point is given, and wherein the top view of the platform is essentially in shape a parallelogram with one arranged thereon in the circumferential direction running nose shows the transition from the platform to the Flow deflecting device to design such that the introductory mentioned voltage increases are avoided as far as possible.
  • the contour of the component is in the area of the transition from to design the platform for the flow deflection device accordingly, According to the invention this is achieved on the one hand in that the Trailing edge base point of the flow deflector in a corner of the Parallelogram.
  • leading edge base point the flow deflector in a corner of the Parallelogram or that a parallelogram long side as Tangent to the suction-side profile line is arranged. All three features can be combined with one another as required.
  • the nose of the platform is at the downstream end of the parallelogram suction side of the platform is arranged.
  • FIG. 1 shows a turbine blade according to the prior art in perspective view.
  • Fig. 2 shows a schematic section through this shovel immediately in the area of the transition from the Flow deflector to the platform.
  • 3 finally shows one analog section through a component with all essential to the invention Characteristics.
  • Fig. 1 shows a turbomachine component as it is according to the prior art Technology is carried out in perspective.
  • the foot 12 of the Component is with a device for fastening in the housing Fluid machine or provided on its rotor, as well as with a platform 15, on which the flow deflection device 11 is arranged.
  • the platform is provided with a nose 14, which in the installed state with others Components overlap and have a sealing function.
  • FIG. 2 A section through this turbomachine component immediately on The transition from the flow deflection device to the platform is shown in FIG. 2 shown, the penetration line 18, 19 of the Flow deflection device 11 with the platform 15 is particularly good is recognizable. The disadvantageous tensions in this area are discussed in the introduction.
  • FIG. 3 shows a section analogous to that shown in FIG. 2, 3 shows an inventive component with all represents features essential to the invention.
  • the platform 15 is designed that the leading edge base point 16 and the trailing edge base point 17 of the Flow deflection device 11 exactly in corners of the parallelogram, which is the top view of the platform.
  • a platform edge forms a tangent to the profile line 19 on the suction side recognizes, these measures result in a significantly more favorable Power flow at the points where, as discussed in the introduction, the highest Tensions are present.
  • By making these areas of Flow deflection device will end on the outside of the platform at these points the deformation of the material is less hampered than at a conventional design. Especially in places where maximum When loaded, the platform goes straight into the flow deflection device over and the flow of force does not have to be redirected. Voltage peaks become much better as a result of elastic stretching recorded and excessive voltage increases avoided.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

The flow deflector (11) is connected to a platform (15), shaped like a parallelogram with a nose (14) extending in circumferential direction. The rear edge base point and front edge base point of the flow deflector are each located in one corner of the parallelogram. One longitudinal parallelogram side is positioned as a tangent to the suction-sided profile line. The nose is positioned on the downstream end suction-sided long parallelogram side of the platform.

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Komponente einer Strömungsmaschine, im wesentlichen bestehend aus einer Strömungsumlenkvorrichtung, welche in einem Fussbereich mit einer Plattform verbunden ist, wobei die Durchdringung der Strömungsumlenkvorrichtung mit der Plattform durch eine druckseitige Profillinie, eine saugseitige Profillinie, sowie einen Vorderkanten-Basispunkt und einen Hinterkanten-Basispunkt gegeben ist, und wobei die Draufsicht der Plattform im wesentlichen die Form eines Parallelogramms mit einer daran angeordneten in Umfangsrichtung verlaufenden Nase zeigt.The invention relates to a component of a turbomachine, in essentially consisting of a flow deflection device, which in a foot area is connected to a platform, the penetration the flow deflection device with the platform through a pressure side Profile line, a suction-side profile line, and a leading edge base point and there is a trailing edge base point, and wherein the top view of FIG Platform essentially in the form of a parallelogram with an attached to it arranged circumferential nose shows.

Stand der TechnikState of the art

Die Schaufeln moderner Gasturbinen unterliegen hohen mechanischen Belastungen aufgrund von Fliehkräften, aerodynamischen Kräften, und Wärmespannungen. Extrem hoch belastet ist insbesondere der Schaufelübergang, also der Bereich, in dem die eigentlichen Strömungsumlenkvorrichtungen in die Plattformen übergehen. An dieser Stelle muss das gesamte durch aerodynamische Kräfte induzierte Moment übertragen werden, und bei Laufschaufeln ist auch deren Fliehkraftbelastung zu halten. Bei hohen Heissgastemperaturen und insbesondere dann, wenn die Komponenten gekühlt werden, ist gerade im Bereich des Übergangs von der Schaufel zur Plattform weiterhin mit hohen Temperaturgradienten zu rechnen.The blades of modern gas turbines are subject to high mechanical ones Loads due to centrifugal forces, aerodynamic forces, and Thermal stresses. In particular, the Blade transition, i.e. the area in which the actual Transfer flow deflection devices into the platforms. At this point must be the entire moment induced by aerodynamic forces are transferred, and with rotor blades there is also their centrifugal force to keep. At high hot gas temperatures and especially when the Components are cooled, is in the area of transition from the Shovel to the platform continues to expect high temperature gradients.

In der Draufsicht stellen sich derartige Plattformen von Schaufeln meist als Parallelogramme dar, deren zwei Seiten in Umfangsrichtung der Maschine orientiert sind, während die beiden anderen Seiten in etwa in Richtung des mittleren Strömungswinkels verlaufen. Meist ist an einem stromab gelegenen Ende eine in Umfangsrichtung verlaufende Nase angeordnet. Im eingebauten Zustand greifen die Nasen einer Plattform jeweils in eine korrespondierende Aussparung eines anderen Bauteils, und dichten so den Zwischenraum der Plattformen in Strömungsrichtung ab.In the top view, such platforms of blades usually pose as Parallelograms represent the two sides in the circumferential direction of the machine are oriented, while the other two sides are roughly in the direction of the mean flow angle. Most is on a downstream End arranged a circumferential nose. In the built-in Condition, the noses of one platform each engage in a corresponding one Recess of another component, and thus seal the space between the Platforms in the direction of flow.

Innerhalb der so beschriebenen Fläche liegt die Durchdringungslinie der Schaufel, die im wesentlichen durch eine saugseitige und druckseitige Profillinie sowie einen Hinterkanten-Basispunkt und einen Vorderkanten-Basispunkt zu charakterisieren ist. Die Plattformen tragen an ihrer Unterseite Vorrichtungen, um die Komponenten im Gehäuse oder auf der Welle zu verankern, und stellen daher recht massive und somit auch steife Gebilde dar.The line of penetration lies within the area thus described Vane, essentially by a suction side and pressure side Profile line and a trailing edge base point and a leading edge base point is to be characterized. The platforms bear on their underside Devices to the components in the housing or on the shaft too anchor, and therefore represent quite massive and therefore also rigid structures.

Der Fachmann erkennt bei der Draufsicht auf die so beschriebene Konfiguration im Übergang von der Strömungsumlenkvorrichtung zur Plattform die Grundzüge einer Dreipunktauflage, die das durch aerodynamische Kräfte induzierte Moment von in die Plattform überträgt. Auflagepunkte sind hierbei die Basispunkte von Hinterkante und Vorderkante, sowie die saugseitigen Profillinie, im Bereich der maximalen Wölbung.The person skilled in the art recognizes from the top view of the one described Configuration in the transition from the flow deflector to the platform the basics of a three-point support, which is due to aerodynamic forces induced moment of transmits into the platform. Support points are here the base points of the rear edge and front edge, as well as the suction side Profile line, in the area of the maximum curvature.

Aufgrund der Einleitung der Kräfte und Momente in die steife Plattform entstehen an den genannten Stellen komplexe dreidimensionale Spannungszustände. Aufgrund der Steifigkeit der Plattform kann das Material die Spannungen nicht durch elastische Dehnungen kompensieren; die erwähnten Temperaturgradienten bedingen Differenzdehnungen, die ebenfalls aufgrund der Bauteilgeometrie nicht frei erfolgen können, was die Bauteilbelastung weiter erhöht.Due to the introduction of the forces and moments into the rigid platform complex three-dimensional form at the points mentioned Stress states. Due to the rigidity of the platform, the material can do not compensate for the stresses by means of elastic strains; the mentioned temperature gradients cause differential strains, which also due to the component geometry, what the Component load further increased.

Weiterhin müssen im Übergang von der Plattform zur Strömungsumlenkvorrichtung relativ enge Radien angebracht werden. Daraus resultiert in diesem Bereich eine Kerbwirkung und ein ungünstiger Kraftfluss.Furthermore, in the transition from the platform to Flow deflection device relatively tight radii are attached. Out of it this results in a notch effect and an unfavorable power flow.

Insgesamt werden also starke Spannungen in einem Gebiet induziert, in dem die Werkstoffdehnung extrem behindert ist. Insbesondere, wenn die Festigkeit des Werkstoffs ohnehin durch hohe Temperaturen vermindert ist, begrenzen die auftretenden Spannungsspitzen die Lebensdauer einer Komponente.Overall, strong tensions are induced in an area in which the material expansion is extremely impeded. Especially when the strength of the material is already reduced by high temperatures the voltage peaks that occur the life of a component.

Darstellung der ErfindungPresentation of the invention

Hier will die Erfindung Abhilfe schaffen. Ziel der Erfindung ist es, bei einer Komponente einer Strömungsmaschine, im wesentlichen bestehend aus einer Strömungsumlenkvorrichtung, welche in einem Fussbereich mit einer Plattform verbunden ist, wobei die Durchdringung der Strömungsumlenkvorrichtung mit der Plattform durch eine druckseitige Profillinie, eine saugseitige Profillinie, sowie einen Vorderkanten-Basispunkt und einen Hinterkanten-Basispunkt gegeben ist, und wobei die Draufsicht der Plattform im wesentlichen die Form eines Parallelogramms mit einer daran angeordneten in Umfangsrichtung verlaufenden Nase zeigt den Übergang von der Plattform zu der Strömungsumlenkvorrichtung derart zu gestalten, dass die einleitend genannten Spannungsüberhöhungen soweit als möglich vermieden werden. Insbesondere ist die Kontur der Komponente im Bereich des Übergangs von der Plattform zur Strömungsumlenkvorrichtung entsprechend zu gestalten, Erfindungsgemäss wird dies einerseits dadurch erreicht, dass der Hinterkanten-Basispunkt der Strömungsumlenkvorrichtung in einer Ecke des Parallelogramms liegt.The invention seeks to remedy this. The aim of the invention is in a Component of a fluid flow machine, consisting essentially of a Flow deflection device, which in a foot area with a platform is connected, the penetration of the flow deflecting device with the platform through a pressure side profile line, a suction side profile line, and a leading edge base point and a trailing edge base point is given, and wherein the top view of the platform is essentially in shape a parallelogram with one arranged thereon in the circumferential direction running nose shows the transition from the platform to the Flow deflecting device to design such that the introductory mentioned voltage increases are avoided as far as possible. In particular, the contour of the component is in the area of the transition from to design the platform for the flow deflection device accordingly, According to the invention this is achieved on the one hand in that the Trailing edge base point of the flow deflector in a corner of the Parallelogram.

Es ist ebenso im Sinne der Erfindung möglich, dass der Vorderkanten-Basispunkt der Strömungsumlenkvorrichtung in einer Ecke des Parallelogramms liegt, oder, dass eine Parallelogramm-Längsseite als Tangente zur saugseitigen Profilline angeordnet ist. Alle drei Merkmale können beliebig untereinander kombiniert werden.It is also possible in the sense of the invention that the leading edge base point the flow deflector in a corner of the Parallelogram, or that a parallelogram long side as Tangent to the suction-side profile line is arranged. All three features can can be combined with one another as required.

Insbesondere in Verbindung mit der Plazierung des Hinterkanten-Basispunktes ist es von Vorteil, wenn die Nase der Plattform am stromabwärtigen Ende der saugseitigen Parallelogramm-Längsseite der Plattform angeordnet ist.Especially in connection with the placement of the trailing edge base point it is beneficial if the nose of the platform is at the downstream end of the parallelogram suction side of the platform is arranged.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Nachfolgend sei die Erfindung anhand der Zeichnung näher erläutert. Dabei zeigt Fig. 1 eine Turbinenschaufel nach dem Stand der Technik in perspektivischer Darstellung. Fig. 2 zeigt einen schematischen Schnitt durch diese Schaufel unmittelbar im Bereich des Übergangs von der Strömungsumlenkvorrichtung zur Plattform. Fig. 3 schliesslich zeigt einen analogen Schnitt durch eine Komponente mit allen erfindungswesentlichen Merkmalen.The invention is explained in more detail below with reference to the drawing. Here 1 shows a turbine blade according to the prior art in perspective view. Fig. 2 shows a schematic section through this shovel immediately in the area of the transition from the Flow deflector to the platform. 3 finally shows one analog section through a component with all essential to the invention Characteristics.

Weg zur Ausführung der ErfindungWay of carrying out the invention

Fig. 1 zeigt eine Strömungsmaschinenkomponente wie sie nach dem Stand der Technik ausgeführt wird in perspektivischer Darstellung. Der Fuss 12 der Komponente ist mit einer Vorrichtung zur Befestigung im Gehäuse einer Strömungsmaschine oder auf deren Läufer versehen, sowie mit einer Plattform 15, auf welcher die Strömungsumlenkvorrichtung 11 angeordnet ist. Im Bereich des Übergangs von der Strömungsumlenkvorrichtung zum Fuss finden sich eine druckseitige Profillinie 18, eine saugseitige Profillinie 19, sowie jeweils ein Basispunkt der Vorderkante und der Hinterkante, 16 bzw. 17. Die Plattform ist mit einer Nase 14 versehen, welche im eingebauten Zustand mit anderen Bauteilen überlappt und eine Dichtfunktion hat.Fig. 1 shows a turbomachine component as it is according to the prior art Technology is carried out in perspective. The foot 12 of the Component is with a device for fastening in the housing Fluid machine or provided on its rotor, as well as with a platform 15, on which the flow deflection device 11 is arranged. In the area the transition from the flow deflector to the foot can be found a pressure-side profile line 18, a suction-side profile line 19, and one each Base point of the leading edge and the trailing edge, 16 and 17. The platform is provided with a nose 14, which in the installed state with others Components overlap and have a sealing function.

Ein Schnitt durch diese Strömungsmaschinenkomponente unmittelbar am Übergang von der Strömungsumlenkvorrichtung zur Plattform ist in Fig. 2 dargestellt, wobei die Durchdringungslinie 18, 19 der Strömungsumlenkvorrichtung 11 mit der Plattform 15 besonders gut zu erkennen ist. Die nachteiligen Spannungsverhältnisse in diesem Bereich sind einleitend diskutiert.A section through this turbomachine component immediately on The transition from the flow deflection device to the platform is shown in FIG. 2 shown, the penetration line 18, 19 of the Flow deflection device 11 with the platform 15 is particularly good is recognizable. The disadvantageous tensions in this area are discussed in the introduction.

Zu erwähnen ist an dieser Stelle, dass die Darstellung der Schaufeln als Vollprofile in den Figuren 2 und 3 rein schematischer Natur ist, und nicht in einem einschränkenden Sinne verstanden werden darf. Innerhalb der Schaufel können beispielsweise auch Kühlluftkanäle vorhanden sein.It should be mentioned at this point that the blades are shown as Full profiles in Figures 2 and 3 is purely schematic in nature, and not in can be understood in a restrictive sense. Inside the shovel For example, cooling air ducts can also be present.

In Fig. 3 ist ein Schnitt analog zum dem in Fig. 2 dargestellten abgebildet, wobei Fig. 3 eine erfindungsgemässe Komponente mit allen erfindungswesentlichen Merkmalen darstellt. Die Plattform 15 ist so gestaltet, dass der Vorderkanten-Basispunkt 16 und der Hinterkanten-Basispunkt 17 der Strömungsumlenkvorrichtung 11 genau in Ecken des Parallelogramms, welches die Plattform in der Draufsicht darstellt, liegen. Eine Plattformkante bildet eine Tangente zur saugseitigen Profillinie 19. Wie der Fachmann leicht erkennt, ergibt sich durch diese Massnahmen ein wesentlich günstigerer Kraftfluss an den Stellen, an denen, wie einleitend diskutiert, die höchsten Spannungen vorliegen. Dadurch, dass diese Bereiche der Strömumgsumlenkvorrichtung an der Aussenseite der Plattform enden, werden an diesen Stellen die Verformungen des Werkstoffs weniger behindert als bei einer herkömmlichen Ausgestaltung. Gerade an den Stellen maximaler Belastung geht die Plattform geradlinig in die Strömungsumlenkvorrichtung über und der Kraftfluss muss nicht umgelenkt werden. Spannungsspitzen werden hierdurch wesentlich besser durch elastische Dehnungen aufgenommen und Spannungsüberhöhungen vermieden.FIG. 3 shows a section analogous to that shown in FIG. 2, 3 shows an inventive component with all represents features essential to the invention. The platform 15 is designed that the leading edge base point 16 and the trailing edge base point 17 of the Flow deflection device 11 exactly in corners of the parallelogram, which is the top view of the platform. A platform edge forms a tangent to the profile line 19 on the suction side recognizes, these measures result in a significantly more favorable Power flow at the points where, as discussed in the introduction, the highest Tensions are present. By making these areas of Flow deflection device will end on the outside of the platform at these points the deformation of the material is less hampered than at a conventional design. Especially in places where maximum When loaded, the platform goes straight into the flow deflection device over and the flow of force does not have to be redirected. Voltage peaks become much better as a result of elastic stretching recorded and excessive voltage increases avoided.

Im Rahmen der Implementation der erfindungsgemässen Merkmale ist es weiterhin vorteilhaft, die Nase 14 auf der Saugseite anzubringen. Es wird dadurch konstruktiv wesentlich einfacher, den Hinterkanten-Basispunkt erfindungsgemäss anzuordnen.It is within the scope of the implementation of the features according to the invention further advantageous to attach the nose 14 on the suction side. It will this makes the trailing edge base point much simpler in design terms to arrange according to the invention.

BezugszeichenlisteReference list

1111
StrömungsumlenkvorrichtungFlow deflection device
1212th
FussFoot
1414
Nasenose
1515
Plattformplatform
1616
Vorderkanten-BasispunktLeading edge base point
1717th
Hinterkanten-BasispunktTrailing edge base point
1818th
druckseitige Profilliniepressure side profile line
1919th
saugseitige ProfillinieProfile line on the suction side

Claims (4)

Komponente einer Strömungsmaschine, im wesentlichen bestehend aus einer Strömungsumlenkvorrichtung (11), welche in einem Fussbereich mit einer Plattform (15) verbunden ist, wobei die Durchdringung der Strömungsumlenkvorrichtung mit der Plattform durch eine druckseitige Profillinie (18), eine saugseitige Profillinie( 19), sowie einen Vorderkanten-Basispunkt (16) und einen Hinterkanten-Basispunkt (17) gegeben ist, und wobei die Draufsicht der Plattform im wesentlichen die Form eines Parallelogramms mit einer daran angeordneten in Umfangsrichtung verlaufenden Nase (14) zeigt, dadurch gekennzeichnet, dass der Hinterkanten-Basispunkt der Strömungsumlenkvorrichtung in einer Ecke des Parallelogramms liegt.Component of a fluid flow machine, consisting essentially of a flow deflection device (11), which in a foot area with a platform (15) is connected, the penetration of the Flow deflection device with the platform through a pressure side Profile line (18), a suction-side profile line (19), and a leading edge base point (16) and a trailing edge base point (17) is given, and the top view of the platform being substantially in the form of a Parallelogram with one arranged in the circumferential direction extending nose (14), characterized in that the Trailing edge base point of the flow deflection device in a corner of the parallelogram. Komponente einer Strömungsmaschine, im wesentlichen bestehend aus einer Strömungsumlenkvorrichtung (11), welche in einem Fussbereich mit einer Plattform (15) verbunden ist, wobei die Durchdringung der Strömungsumlenkvorrichtung mit der Plattform durch eine druckseitige Profillinie (18), eine saugseitige Profillinie( 19), sowie einen Vorderkanten-Basispunkt (16) und einen Hinterkanten-Basispunkt (17) gegeben ist, und wobei die Draufsicht der Plattform im wesentlichen die Form eines Parallelogramms mit einer daran angeordneten in Umfangsrichtung verlaufenden Nase (14) zeigt, dadurch gekennzeichnet, dass der Vorderkanten-Basispunkt der Strömungsumlenkvorrichtung in einer Ecke des Parallelogramms liegt.Component of a fluid flow machine, consisting essentially of a flow deflection device (11), which in a foot area with a platform (15) is connected, the penetration of the Flow deflection device with the platform through a pressure side Profile line (18), a suction-side profile line (19), and a leading edge base point (16) and a trailing edge base point (17) is given, and the top view of the platform being substantially in the form of a Parallelogram with one arranged in the circumferential direction extending nose (14), characterized in that the Leading edge base point of the flow deflector in a corner of the parallelogram. Komponente einer Strömungsmaschine, im wesentlichen bestehend aus einer Strömungsumlenkvorrichtung (11), welche in einem Fussbereich mit einer Plattform (15) verbunden ist, wobei die Durchdringung der Strömungsumlenkvorrichtung mit der Plattform durch eine druckseitige Profillinie (18), eine saugseitige Profillinie( 19), sowie einen Vorderkanten-Basispunkt (16) und einen Hinterkanten-Basispunkt (17) gegeben ist, und wobei die Draufsicht der Plattform im wesentlichen die Form eines Parallelogramms mit einer daran angeordneten in Umfangsrichtung verlaufenden Nase (14) zeigt, dadurch gekennzeichnet, dass eine Parallelogramm-Längsseite alsTangente zur saugseitigen Profilline angeordnet ist.Component of a fluid flow machine, consisting essentially of a flow deflection device (11), which in a foot area with a platform (15) is connected, the penetration of the Flow deflection device with the platform through a pressure side Profile line (18), a suction-side profile line (19), and a leading edge base point (16) and a trailing edge base point (17) is given, and the top view of the platform being substantially in the form of a Parallelogram with one arranged in the circumferential direction extending nose (14), characterized in that a Parallelogram long side as tangent to the suction-side Profilline is arranged. Komponente einer Strömungsmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Nase am stromabwärtigen Ende der saugseitigen Parallelogramm-Längsseite der Plattform angeordnet istComponent of a fluid flow machine according to one of claims 1 to 3, characterized in that the nose at the downstream end of the parallelogram suction side of the platform is arranged
EP99810111A 1999-02-10 1999-02-10 Turbomachine blade Expired - Lifetime EP1028229B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59912578T DE59912578D1 (en) 1999-02-10 1999-02-10 A blade
EP99810111A EP1028229B1 (en) 1999-02-10 1999-02-10 Turbomachine blade
US09/499,399 US6343914B1 (en) 1999-02-10 2000-02-07 Fluid-flow machine component

Applications Claiming Priority (1)

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EP99810111A EP1028229B1 (en) 1999-02-10 1999-02-10 Turbomachine blade

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EP1028229A1 true EP1028229A1 (en) 2000-08-16
EP1028229B1 EP1028229B1 (en) 2005-09-21

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EP99810111A Expired - Lifetime EP1028229B1 (en) 1999-02-10 1999-02-10 Turbomachine blade

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EP (1) EP1028229B1 (en)
DE (1) DE59912578D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5090287B2 (en) * 2008-08-07 2012-12-05 株式会社日立製作所 Turbine blade and its fixed structure
CH700319A1 (en) * 2009-01-30 2010-07-30 Alstom Technology Ltd Chilled component for a gas turbine.

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GB2162588A (en) * 1984-07-30 1986-02-05 Gen Electric Gas turbine blades
US5443365A (en) * 1993-12-02 1995-08-22 General Electric Company Fan blade for blade-out protection
US5853286A (en) * 1996-01-23 1998-12-29 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Movable fan vane with a safety profile

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US3014695A (en) * 1960-02-03 1961-12-26 Gen Electric Turbine bucket retaining means
US4676723A (en) * 1986-03-26 1987-06-30 Westinghouse Electric Corp. Locking system for a turbine side entry blade
US4815938A (en) * 1987-12-24 1989-03-28 Westinghouse Electric Corp. Shroud gap control for integral shrouded blades
JPH06129203A (en) * 1992-10-09 1994-05-10 Mitsubishi Heavy Ind Ltd Vibration suppressing structure for gas turbine rotor blade
US6030178A (en) * 1998-09-14 2000-02-29 General Electric Co. Axial entry dovetail segment for securing a closure bucket to a turbine wheel and methods of installation

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GB2162588A (en) * 1984-07-30 1986-02-05 Gen Electric Gas turbine blades
US5443365A (en) * 1993-12-02 1995-08-22 General Electric Company Fan blade for blade-out protection
US5853286A (en) * 1996-01-23 1998-12-29 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Movable fan vane with a safety profile

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US6343914B1 (en) 2002-02-05
EP1028229B1 (en) 2005-09-21
DE59912578D1 (en) 2005-10-27

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