EP1951991B1 - Aube de turbine pour une turbine a vapeur - Google Patents

Aube de turbine pour une turbine a vapeur Download PDF

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Publication number
EP1951991B1
EP1951991B1 EP06819186A EP06819186A EP1951991B1 EP 1951991 B1 EP1951991 B1 EP 1951991B1 EP 06819186 A EP06819186 A EP 06819186A EP 06819186 A EP06819186 A EP 06819186A EP 1951991 B1 EP1951991 B1 EP 1951991B1
Authority
EP
European Patent Office
Prior art keywords
turbine blade
turbine
section
blade
root
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.)
Not-in-force
Application number
EP06819186A
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German (de)
English (en)
Other versions
EP1951991A1 (fr
Inventor
Detlef Haje
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.)
Siemens AG
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Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP06819186A priority Critical patent/EP1951991B1/fr
Priority to PL06819186T priority patent/PL1951991T3/pl
Publication of EP1951991A1 publication Critical patent/EP1951991A1/fr
Application granted granted Critical
Publication of EP1951991B1 publication Critical patent/EP1951991B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • 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
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments
    • 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
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced

Definitions

  • the invention relates to a turbine blade for a steam turbine with an airfoil section and a foot section, which airfoil section at least partially contains fiber composite material. Moreover, the invention relates to a steam turbine with such a turbine blade.
  • Such turbine blades in particular designed as blades turbine blades of this type are made in the prior art of steel or titanium.
  • Turbine blades in general and in particular end-stage blades are exposed to high centrifugal forces due to their function, since they are intended to provide the highest possible outflow area in order to achieve high efficiency and thus have to have a large blade length.
  • High-strength steels are therefore used for common applications. Where these are no longer applicable for reasons of centrifugal stresses, titanium vanes are used, which also experience lower centrifugal force stresses due to the lower density.
  • these blades are much more expensive than steel blades.
  • the outflow surfaces for full-speed machines (50 Hz) are limited to approximately 16 m 2 , which entails corresponding consequences for the achievable blade lengths.
  • the number of low-pressure floods is often increased in the prior art in low-pressure stages of steam turbines. This can be done, for example, by switching from single-flow to double-flow turbine stages or by using several low-pressure turbine parts. Also, the speed of the Turbosatzes be reduced. In this case larger outflow areas can be used. However, all these measures are associated with sometimes considerable costs.
  • An object of the invention is to provide a steam turbine with a turbine blade of the type mentioned, which allows a particularly high efficiency of the steam turbine and at the same time can be operated safely in the steam turbine.
  • Fiber composite blades are thus used according to the invention as low-pressure stage or final stage blades. Comparing the relative strengths of different materials clearly shows the advantage of fiber composites for use as a final stage blade material.
  • the strength above the density (R p0.2 / ⁇ ) for high-strength tempering steel is 115 m 2 / s 2 , for titanium 221 m 2 / s 2 , for the fiber-reinforced material CFK-HM, however, 563 m 2 / s 2 . Due to the significantly higher strength of the fiber composite material, either turbine blades produced with conventional dimensions can be utilized to a greater extent, or the turbine blades be made with a longer length. The resulting centrifugal force stresses can then be absorbed by the turbine blade without further loss of operational reliability due to the significantly increased strength / density ratio.
  • Due to the high strength / density ratio of a turbine blade according to the invention containing fiber composite can be provided due to the design of the airfoil section for use in a low pressure stage of the steam turbine despite the high centrifugal forces a greatly enlarged outflow. This can be done in particular by providing a particularly large blade length. Thus, the efficiency of the steam turbine can be significantly increased.
  • the turbine blade according to the invention is particularly suitable for the last row of blades of a steam turbine, but can also be used according to the invention for the second and possibly the third last row of blades. It can also be combined with steel or titanium precursor blades become.
  • the blade blade section of the turbine blade according to the invention containing at least in some regions fiber composite material preferably has the fiber composite material at least in the outer wall region.
  • the entire airfoil section can also consist of fiber composite material.
  • the number of fibers decreases advantageously in the longitudinal direction of the airfoil section when the airfoil section becomes leaner to the blade tip.
  • the above object is further achieved according to the invention with a generic turbine blade, wherein the blade section at least partially fiber composite material, wherein at least the fiber composite material containing area is surrounded with a deformable moisture-impermeable protective layer, which prevents the penetration of moisture into the fiber composite material during operation of the turbine blade ,
  • the object is achieved with a steam turbine, which is provided with such a turbine blade.
  • a moisture absorption of the airfoil section during operation in the steam turbine can be effectively prevented.
  • Moisture absorption is an undesirable time-dependent process that can cause weight gain of the component and thus potential rotor imbalance.
  • a moisture absorption can cause a deformation of the fiber composite material as well as permanent damage the damage of the matrix and thus a failure of the component containing the fiber composite material.
  • the provision according to the invention of a moisture-impermeable protective layer avoids the consequences listed above which endanger the operational reliability of the steam turbine.
  • the protective layer according to the invention is made deformable.
  • the protective layer is within the meaning of the invention designed so deformable that the protective layer does not lose its moisture impermeability over its lifetime despite occurring during operation of the blade deformations of the fiber composite material contained the region of the airfoil section.
  • This can be achieved in particular by the protective layer having an elastic area of use which exceeds the utilized expansion range of the base material.
  • the turbine blade embodiment according to the invention can be used particularly reliably by the moisture-impermeable protective layer according to the invention.
  • the moisture-repellent protective layer encloses the airfoil section completely. Moreover, it may also be desirable for the protective layer to cover the entire turbine blade, i. also the blade foot, encloses.
  • the protective layer should be designed so that a secure adhesion of the protective layer is given even with drops of drops. Furthermore, the design of the base material of the airfoil section should be such that continuous droplet impacts do not cause any fatigue or disruption of the base material.
  • the aforementioned object is further achieved according to the invention with a generic turbine blade, in which both the airfoil section and the foot section in each case at least partially contains fiber composite material.
  • the object is achieved with a steam turbine, which is provided with such a turbine blade.
  • the use of fiber composite material in the airfoil section makes it possible to design the turbine blade with a large outflow surface due to the low density of the fiber composite material.
  • the fiber composite material advantageously contains glass fibers, plastic fibers, such as aramid fibers, and / or plastic fibers.
  • the fiber-reinforced material CFK-HM can be used as a fiber composite material.
  • the fiber composite material has fibers which are guided in the area of the blade leaf section at an angle deviating from a main axis of the turbine blade, in particular at an angle of ⁇ 15 °, ⁇ -30 ° and / or ⁇ 45 ° with respect to the main axis.
  • the fiber composite layers can be arranged mirror-symmetrically to the blade center surface, whereby a twist is avoided.
  • the anisotropy can also be used to achieve a targeted change in the blade geometry as a function of the operating stresses.
  • a twisting can be provided, in which the blade grid opens at overspeeds, so that the flow draws less energy and thus does not contribute to a further run-up.
  • the twisting can be used to adjust an optimized flow profile depending on the flow and load.
  • the blade grid can be closed with a smaller flow and be opened correspondingly with a larger flow.
  • the blade blade section has a packing arranged in the middle of the blade, which is completely enclosed by the fiber composite material.
  • an electrically conductive layer is arranged between the protective layer and the fiber composite material.
  • This electrically conductive layer serves as a warning mechanism, with which damage to the protective layer can be detected, whereupon countermeasures, such as replacement or replacement of the affected component, or repair of the protective layer can be made in good time.
  • Such an electrically conductive layer may be provided either individually or in pairs with an insulating layer therebetween.
  • an electrically conductive, in particular metallic layer, an insulating layer, another electrically conductive, in particular metallic layer and the protective layer results for the layer structure of the airfoil section in the surface region thereof a successive arrangement of the fiber composite material, an electrically conductive, in particular metallic layer, an insulating layer, another electrically conductive, in particular metallic layer and the protective layer.
  • the insulation resistance to the environment or between the two electrically conductive layers can then be measured.
  • the electrical capacitance of the electrically conductive layer, the insulating layer, as well as the further electrically conductive layer comprising arrangement for monitoring the function of the protective layer can be measured.
  • the measurement of the insulation resistance relative to the environment or of the electrical resistance of the electrically conductive layer for monitoring the function of the protective layer is appropriate.
  • water-soluble chemical substances are alternatively arranged between the protective layer and the fiber composite material.
  • the water-soluble chemical substances are preferably detectable in dissolved form, in particular by chemical, optical and / or radiological means. This measure represents an alternative monitoring possibility of the function of the protective layer.
  • the condensate of the water-steam cycle of the steam power plant can be continuously checked. If the chemical substances arranged under the protective layer are detectable in this, this indicates damage to the protective layer.
  • a leading edge of the turbine blade is provided with an edge reinforcement for protection against droplet impact.
  • edge reinforcement may be provided by adhering to the turbine blade or by laminating into the turbine blade.
  • an edge reinforcement can be made by means of a sealed protective or intermediate layer.
  • the basic component of the turbine blade itself can be designed with a turbine-like edge reinforcement.
  • protection against gobbing may be achieved by a laminate construction of the turbine blade in which the fibers are transverse.
  • the foot portion of the turbine blade a contact element for making contact with a Schaufelfußhalterung in a rotor shaft of a Steam turbine, wherein the contact element contains fiber composite material and / or a metallic material.
  • the contact element made of fiber composite or metallic materials.
  • the corresponding metallic materials should be chosen such that they allow a stable and dimensionally stable connection to the rotor shaft and prevent overstressing of the fiber composite surrounding the contact element of the blade root.
  • the contact element can be formed by a metallic sleeve.
  • the foot section has a deflection element, by means of which a substantial number of fibers of the blade is deflected, and / or a guide element, by means of which an advantageous fiber guidance in the blade root is diverted into a fiber guide adapted to the geometry of the blade section.
  • the deflecting element and / or the guide element may each consist of fiber composite material or a metallic material.
  • the contact element and the guide element or the contact element and the deflecting element can each be formed by the same element.
  • the foot portion is designed as a plug-in foot, which can be inserted into a blade root holder of a rotor shaft of the turbine with respect to the rotor shaft radial direction.
  • the fibers of the fiber composite material are guided around serving as contact elements sleeves.
  • the sheet curvature in the foot region can advantageously be modeled by an assignment to different pin positions of the plug foot, so that advantageously result in low deflections from the foot to the blade area in such a foot. The effort for guide elements remains limited.
  • the deformable moisture-impermeable protective layer also surrounds the foot section.
  • penetration of moisture is effectively prevented even in the fiber composite material contained in the foot section.
  • life of the turbine blade can be further increased.
  • the foot portion of the turbine blade is designed as a sliding foot, which is inserted into a blade root support of a rotor shaft of the turbine in relation to the rotor shaft in the substantially axial direction.
  • the insertion direction can deviate by up to ⁇ 40 ° from the axial direction.
  • the foot portion is curved, with the foot curvature substantially following the curvature of the airfoil portion present in the vicinity of the foot.
  • this has a device for monitoring the vibration behavior of the turbine blade.
  • a change in the natural frequency of the turbine blade can be detected, which may be due to a moisture absorption of the fiber composite material in the airfoil portion during operation of the steam turbine.
  • Such a change in the natural frequency of the turbine blade should then be taken as an opportunity to check the functionality of the aforementioned deformable moisture-impermeable protective layer and possibly repair the protective layer, so that a failure of the component can be prevented.
  • the steam turbine has at least one heatable guide blade.
  • a device for extracting moisture on at least one vane may be provided.
  • fiber composite blades are preferably carried out by the usual methods in which fibers are wound and impregnated with the matrix material or applied in the form of so-called prepregs. Thereafter, they are brought in a so-called die in its final form, whereby a curing of the matrix takes place.
  • optional contact, deflection or guide elements are already inserted or attached. Thereafter, it may be necessary to place the blades at certain locations, e.g. by grinding, for example, to achieve the required dimensional accuracy, tolerance compliance and surface quality.
  • deflection or guide elements can be edited or these elements are attached after the molding process.
  • an edge protector can also be mounted which is integrated into the blade profile by subsequent fitting work, such as grinding. This is followed by coating with the layers required for the protective layer and the warning system. In this case, individual layers can be reinforced at certain points in order to improve protection or amplification functions.
  • Fig. 1 shows a first embodiment of a turbine blade 10 according to the invention, which is designed in particular for use in a low-pressure stage of a steam turbine.
  • the turbine blade 10 comprises an airfoil section 12 and a foot section 14 in the form of a plug-in foot.
  • the foot section 14 has insertion tabs 16 for a pin connection.
  • the airfoil section 12 is made of fiber composite material 18 containing glass fibers and / or carbon fibers.
  • the main fiber direction 20 runs along a main axis 21 of the turbine blade 10.
  • the airfoil section 12 has an additional fiber composite layer 22.
  • the supplemental fiber composite layer 22 includes additional fibers that extend at a different angle to the major axis 21 of the turbine blade 10, e.g. at an angle of ⁇ 15 °, ⁇ 30 ° or ⁇ 45 ° and are provided for stiffening the airfoil section 12. It is also possible to provide a plurality of such additional fiber composite layers 22. In this case, these layers can be arranged mirror-symmetrically to the blade center surface, whereby a distortion is avoided. An asymmetrical arrangement of the additional fiber composite layers leads to a twist. This may possibly be used for self-adjustment purposes.
  • Fig. 2 shows the section II-II in the blade section 12 according to Fig. 1 , This shows a arranged in the range of large sheet thickness for weight and stiffness filler 24. This is surrounded by the fiber composite material 18.
  • the turbine blade 10 is determined by means of turbine steam 26 in accordance with Fig. 2 flowed in from the left.
  • the inflowing turbine steam 26 facing the leading edge of the turbine blade 10 is provided with an edge reinforcement 28.
  • the edge reinforcement 28 is in Fig. 2c shown in more detail. It consists of metal and is attached by means of an adhesive bond 40 with a sticky and fiber composite fair outlet 42 to the leading edge 27 of the turbine blade 10.
  • Fig. 2a illustrates a first embodiment of the construction of the turbine blade 10 according to Fig. 2 in a surface area thereof.
  • the inner fiber composite material 18 is surrounded by a first electrically conductive layer 36 in the form of a metallic layer, an insulating layer 34, a second electrically conductive layer 32 in the form of a metallic layer, and finally a protective layer 30.
  • the protective layer 30 is moisture-repellent for sealing the airfoil section 12 to liquid.
  • the protective layer 30 thus prevents moisture from penetrating into the fiber composite material 18.
  • the protective layer 30 is deformable in such a way that it compensates for the deformations to be expected during operation of the turbine blade 10 without loss of its sealing function.
  • the successive arrangement of the electrically conductive layer 32, the insulating layer 34 and the electrically conductive layer 36 serves to monitor the function of the protective layer 30.
  • Fig. 2b shows a second embodiment of the construction of the turbine blade 10 according to Fig. 2 in a surface area thereof.
  • the fiber composite material 18 is surrounded by a layer of indication material 38, which in turn is surrounded by the protective layer 30.
  • the indication material 38 is in the form of water-soluble substances which are detectable in dissolved form in a chemical, optical and / or radiological manner. The indication material 38 thus serves to detect a leak in the protective layer 30. If moisture penetrates into the interior of the airfoil section 12, the water-soluble chemical substances of the indication material 38 are released and can be detected in the condensate leaving the turbine.
  • Fig. 3a shows a second embodiment of a turbine blade 110 according to the invention.
  • a foot section 43 adjoins an airfoil section 12, which is only partially shown, with fiber composite material 18.
  • the fibers of the fiber composite material 18 are guided starting from the blade section 12 in the foot section 43 and guided around a contact and deflection element 46 in the form of a metallic sleeve, whereupon the fiber then again runs back into the airfoil section 12.
  • the element 46 thus fulfills a deflection function.
  • it also fills a contact function in which it makes contact with a shaft groove 48 of a rotor shaft 47 of a steam turbine.
  • the turbine blade 110 according to FIG Fig. 3a a so-called guide element 44, by means of which an advantageous fiber guide in the blade root is diverted into a fiber guide of the fiber composite material 18 adapted to the geometry of the blade leaf section 12.
  • Fig. 3b is the section III-III after Fig. 3a shown.
  • the foot portion 43 is designed in the form of a plug foot with insertion tabs 45 for insertion into corresponding transversely to a longitudinal axis 50 of a rotor shaft 47 extending wave grooves 48.
  • the push-in tabs 45 are then secured in the shaft grooves 48 by means of insertion pins arranged transversely thereto.
  • Each of these plug-in feet 45 has one of the contact and deflection elements 46.
  • Fig. 4a is a third embodiment of a turbine blade 210 according to the invention illustrated with a foot portion 52 in the form of a sliding foot.
  • the foot section 52 the in Fig. 4b is shown in more detail in section, is inserted into a running in the axial direction of the rotor shaft shaft groove 60.
  • the foot section 52 is provided with a curvature, as in Fig. 4a and has a deflection element 56, around which a substantial number of fibers of the fiber composite material 18 is led around. These fibers are surrounded by a guide or contact element 54.
  • This element initially fulfills the function of redirecting an advantageous fiber guide in the foot section 52 into a fiber guide adapted to the geometry of the blade section 12.
  • the element 54 fulfills the function of making contact with a shaft groove 60 of the rotor shaft 58.
  • the guide and contact element 54 completely surrounds the fiber composite material 18 of the foot section 14 and also adjoins the fiber composite material 18 in the lower region of the fiber blade leaf section 12.
  • a gap 62 is provided between the fiber composite material 18 and the element 54.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Laminated Bodies (AREA)

Claims (16)

  1. Aube de turbine (10, 110, 210) pour une turbine à vapeur comprenant une section d'ailette (12) et une section de base (14, 43, 52), la section d'ailette (12) contenant au moins par endroits du matériau composite renforcé par des fibres (18), au moins la zone contenant le matériau composite renforcé par des fibres (18) étant entourée d'une couche de protection (30) déformable et imperméable à l'humidité, qui empêche la pénétration de l'humidité dans le matériau composite renforcé par des fibres (18) pendant le fonctionnement de l'aube de turbine (10, 110, 210), caractérisée en ce qu'une couche (32, 36) électroconductrice ou des substances (38) chimiques solubles à l'eau sont disposées entre la couche de protection (30) et le matériau composite renforcé par des fibres (18), la fonction de la couche de protection (30) étant ainsi contrôlable.
  2. Aube de turbine selon la revendication 1, aussi bien la section d'ailette (12) que la section de base (14, 43, 52) contenant à chaque fois au moins par endroits du matériau composite renforcé par des fibres (18).
  3. Aube de turbine selon l'une quelconque des revendications précédentes, le matériau composite renforcé par des fibres (18) contenant des fibres de verre, des fibres de plastique et/ou des fibres de carbone.
  4. Aube de turbine selon l'une quelconque des revendications précédentes, le matériau composite renforcé par des fibres (18) contenant des fibres qui sont guidées dans la zone de l'ailette (12) sous un angle s'écartant d'un axe principal (21) de l'aube de turbine (10, 110, 210), en particulier sous des angles ± 15°, ± 30° et/ou ± 45° par rapport à l'axe principal (21).
  5. Aube de turbine selon l'une quelconque des revendications précédentes, la section d'ailette (12) présentant un corps de remplissage (24) disposé au centre de l'ailette et entouré complètement par le matériau composite renforcé par des fibres (18).
  6. Aube de turbine selon l'une quelconque des revendications précédentes, la section d'ailette (12) étant conçue pour une utilisation dans un étage de basse pression de la turbine à vapeur.
  7. Aube de turbine selon l'une quelconque des revendications précédentes, les substances (38) chimiques solubles à l'eau pouvant être décelées dans une forme dissoute, en particulier de façon chimique, optique et/ou radiologique.
  8. Aube de turbine selon l'une quelconque des revendications précédentes, une arête d'arrivée du courant (27) de l'aube de turbine (10, 110, 210) étant dotée d'un renfort d'arête (28) pour la protection contre le choc des gouttes.
  9. Aube de turbine selon l'une quelconque des revendications précédentes, la section de base (14) présentant un élément de contact (46, 54) pour l'établissement d'un contact avec un support de base d'aube (48, 60) dans un arbre de rotor (47, 58) d'une turbine à vapeur, l'élément de contact (46, 54) contenant du matériau composite renforcé par des fibres (18) et/ou un matériau métallique.
  10. Aube de turbine selon l'une quelconque des revendications précédentes, la section de base (14, 43, 52) présentant un élément de déviation (46, 56), au moyen duquel un nombre important de fibres de la section d'ailette (12) est dévié, et/ou un élément de guidage (44, 54) au moyen duquel un guidage de fibre avantageux dans la section de base (14, 43, 52) est dévié dans un guidage de fibre adapté à la géométrie de la section d'ailette (12).
  11. Aube de turbine selon l'une quelconque des revendications précédentes, la section de base (14, 43, 52) étant réalisée sous forme de pied emboîtable (14, 43), qui peut être enfiché dans un support de base d'aube (48) d'un arbre de rotor (47) de la turbine dans la direction radiale par rapport à l'arbre de rotor (47).
  12. Aube de turbine selon l'une quelconque des revendications précédentes, la couche de protection (30) rejetant l'humidité entourant également la section de base (14, 43, 52).
  13. Aube de turbine selon l'une quelconque des revendications précédentes, la section de base (14, 43, 52) étant réalisée sous forme de pied coulissant (52), qui peut être introduit dans un support de base d'aube (60) d'un arbre de rotor (58) de la turbine dans la direction sensiblement axiale par rapport à l'arbre de rotor (58).
  14. Turbine à vapeur comprenant une aube de turbine (10, 110, 210) selon l'une quelconque des revendications précédentes.
  15. Turbine à vapeur selon la revendication 14, présentant un dispositif pour le suivi du comportement aux vibrations de l'aube de turbine (10, 110, 210).
  16. Turbine à vapeur selon la revendication 14 ou 15, présentant au moins une ailette directrice chauffante.
EP06819186A 2005-11-21 2006-10-30 Aube de turbine pour une turbine a vapeur Not-in-force EP1951991B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06819186A EP1951991B1 (fr) 2005-11-21 2006-10-30 Aube de turbine pour une turbine a vapeur
PL06819186T PL1951991T3 (pl) 2005-11-21 2006-10-30 Łopatka turbiny dla turbiny parowej

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05025359A EP1788197A1 (fr) 2005-11-21 2005-11-21 Aube de turbine pour turbine à vapeur
PCT/EP2006/067923 WO2007057294A1 (fr) 2005-11-21 2006-10-30 Aube de turbine pour une turbine a vapeur
EP06819186A EP1951991B1 (fr) 2005-11-21 2006-10-30 Aube de turbine pour une turbine a vapeur

Publications (2)

Publication Number Publication Date
EP1951991A1 EP1951991A1 (fr) 2008-08-06
EP1951991B1 true EP1951991B1 (fr) 2010-02-24

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP05025359A Withdrawn EP1788197A1 (fr) 2005-11-21 2005-11-21 Aube de turbine pour turbine à vapeur
EP06819186A Not-in-force EP1951991B1 (fr) 2005-11-21 2006-10-30 Aube de turbine pour une turbine a vapeur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05025359A Withdrawn EP1788197A1 (fr) 2005-11-21 2005-11-21 Aube de turbine pour turbine à vapeur

Country Status (11)

Country Link
US (1) US20100014982A1 (fr)
EP (2) EP1788197A1 (fr)
JP (1) JP4772873B2 (fr)
CN (1) CN101313129B (fr)
AT (1) ATE458900T1 (fr)
BR (1) BRPI0618860A2 (fr)
DE (1) DE502006006279D1 (fr)
ES (1) ES2338369T3 (fr)
PL (1) PL1951991T3 (fr)
RU (1) RU2418956C2 (fr)
WO (1) WO2007057294A1 (fr)

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Publication number Priority date Publication date Assignee Title
FR2921099B1 (fr) * 2007-09-13 2013-12-06 Snecma Dispositif d'amortissement pour aube en materiau composite
US20090077802A1 (en) * 2007-09-20 2009-03-26 General Electric Company Method for making a composite airfoil
EP2113635A1 (fr) 2008-04-30 2009-11-04 Siemens Aktiengesellschaft Turbine à vapeur à condensation à plusieurs étages
DE102008033402A1 (de) * 2008-07-16 2010-01-21 Siemens Aktiengesellschaft Dampfturbinenanlage sowie Verfahren zum Betreiben einer Dampfturbine
DE102008061573B4 (de) 2008-12-11 2016-03-31 Siemens Aktiengesellschaft Turbinenschaufel mit Beschichtung
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JP4772873B2 (ja) 2011-09-14
BRPI0618860A2 (pt) 2011-09-13
RU2008125060A (ru) 2009-12-27
RU2418956C2 (ru) 2011-05-20
US20100014982A1 (en) 2010-01-21
ATE458900T1 (de) 2010-03-15
DE502006006279D1 (de) 2010-04-08
PL1951991T3 (pl) 2010-07-30
EP1788197A1 (fr) 2007-05-23
JP2009516798A (ja) 2009-04-23
WO2007057294A1 (fr) 2007-05-24
EP1951991A1 (fr) 2008-08-06
CN101313129B (zh) 2011-07-06
ES2338369T3 (es) 2010-05-06
CN101313129A (zh) 2008-11-26

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