EP1350924B1 - Attachement des éléments de stator dans une turbine à gaz - Google Patents

Attachement des éléments de stator dans une turbine à gaz Download PDF

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Publication number
EP1350924B1
EP1350924B1 EP03003358A EP03003358A EP1350924B1 EP 1350924 B1 EP1350924 B1 EP 1350924B1 EP 03003358 A EP03003358 A EP 03003358A EP 03003358 A EP03003358 A EP 03003358A EP 1350924 B1 EP1350924 B1 EP 1350924B1
Authority
EP
European Patent Office
Prior art keywords
stator vane
housing
vane span
casing
stator blade
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.)
Expired - Fee Related
Application number
EP03003358A
Other languages
German (de)
English (en)
Other versions
EP1350924A2 (fr
EP1350924A3 (fr
Inventor
Christian Seydel
Andrej Golowin
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.)
Rolls Royce Deutschland Ltd and Co KG
Original Assignee
Rolls Royce Deutschland Ltd and Co KG
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 Rolls Royce Deutschland Ltd and Co KG filed Critical Rolls Royce Deutschland Ltd and Co KG
Publication of EP1350924A2 publication Critical patent/EP1350924A2/fr
Publication of EP1350924A3 publication Critical patent/EP1350924A3/fr
Application granted granted Critical
Publication of EP1350924B1 publication Critical patent/EP1350924B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/246—Fastening of diaphragms or stator-rings
    • 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
    • F01D5/26—Antivibration means not restricted to blade form or construction or to blade-to-blade connections or to the use of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins

Definitions

  • the invention relates to a Statorschaufelsegmentbefest only for a gas turbine with a housing to which a plurality Statorschaufelsegmente are mounted.
  • Stator blades of gas turbines are usually formed as segment-like components which are inserted into a housing or attached to a housing. Constructions of the type mentioned, for example, US 6,296,443 B1.
  • stator blade segments (Vane Spans) inserted into a housing or fastened to a housing must be mounted in such a way that they are fixed on the one hand in the axial direction of the aircraft gas turbine and on the other hand in the circumferential direction of the housing.
  • they have, for example, as mentioned in the above-mentioned US patent, feet or grooves, which are correspondingly positively connected to the housing.
  • DE 21 65 529 describes a device for centering and fixing a guide ring in the housing of a turbomachine.
  • an axial end face of the guide ring is pressed by acting on an inclined plane screws against a circumferential axial stop surface on the housing.
  • the invention has for its object to provide a Statorschaufelsegmentbefestist for a gas turbine, which avoids the disadvantages of the prior art with a simple structure and cost manufacturability and enables a reliable attachment of the stator blade segments.
  • the object is achieved by the feature combination of the main claim, the subclaims show further advantageous embodiments of the invention.
  • the Statorschaufelsegmentbefest only invention is characterized by a number of significant advantages.
  • the principle underlying the invention is to clamp the Statorschaufelsegmente against the housing. These are thereby slightly deformed. In the same way, the housing can be subjected to a corresponding deformation. This deliberately induced elastic deformation eliminates tolerances or play of the fasteners. Unwanted vibrations or the like are thus completely prevented or at least greatly suppressed. Furthermore, it can be achieved by the embodiment according to the invention that the respective free ends of the stator blade segments firmly against the housing and thus do not come loose from the housing.
  • the means for clamping the stator blade segment preferably comprise an actuating element, which may be formed in a favorable embodiment of the invention in the form of a screw.
  • This screw can be performed for example in a threaded recess of the housing. It is then designed, for example, as a lag screw. Alternatively, it is also possible to use pressure screws or provide other biasing means.
  • the radius of the housing in the region of the stator vane segments is smaller than the radius of the respective stator vane segment. This ensures that the free end portions of the Statorschaufelsegmente bear against the housing and can be clamped accordingly.
  • Fig. 1 shows a perspective view of a stator blade segment, as is known per se from the prior art.
  • This comprises a plurality of stator blades, which are fastened to a circular segment-shaped outer support 6 and optionally to a circular segment-shaped inner support 7.
  • the outer support 6 and the inner support 7 may be provided with side feet or lugs or corresponding grooves to allow attachment in a housing 1 (see Fig. 3) or on an inner cover tape.
  • These embodiments are known from the prior art, so that it can be referenced.
  • Rotation of the stator blade segments 2 in the housing can be prevented by so-called vane stops.
  • the stator blade segment shown in FIG. 1 has, for example, a groove 8.
  • Fig. 2 shows a side view of the schematic operation of the invention prior to bracing.
  • a housing 1 is reproduced, while the inner circular arc represents a stator blade segment 2.
  • the reference numeral 3 refers to biasing means.
  • a tension of the stator blade segment 2 leads to the formation of a gap in its middle region, so that the free ends of the stator blade segment abut against the housing 1 or are pressed against this.
  • FIG. 2 shows that the radius of the stator blade segment 2 in the unstressed state is greater than the corresponding radius of the housing 1.
  • the biasing means 3 are formed in the form of a screw 4, which is guided in a threaded recess, not shown in detail, of the housing 1.
  • the screw is designed, for example, as a tension screw in order to deform the stator blade segment 2 in the manner described.

Landscapes

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

Claims (5)

  1. Fixation de segment d'aube de stator pour une turbine à gaz, avec plusieurs segments d'aube de stator (2) logés dans un carter (1), caractérisée en ce que chaque segment d'aube de stator (2) est fixé de manière serrée sous précontrainte au carter (1) à l'aide d'un moyen de précontrainte (3) par déformation élastique du segment d'aube de stator (2) et/ou du carter (1), sachant qu'à l'état non déformé, le rayon du carter (1) dans la zone des segments d'aube de stator (2) est inférieur à celui de chaque segment d'aube de stator (2).
  2. Fixation de segment d'aube de stator selon la revendication n° 1, caractérisée en ce que le moyen de précontrainte (3) est disposé dans la zone circonférentielle médiane du segment d'aube de stator (2).
  3. Fixation de segment d'aube de stator selon la revendication n° 1 ou 2, caractérisée en ce que le moyen de précontrainte (3) pour mettre en précontrainte le segment d'aube de stator (2) est un élément de réglage.
  4. Fixation de segment d'aube de stator selon la revendication n° 3, caractérisée en ce que l'élément de réglage est une vis (4).
  5. Fixation de segment d'aube de stator selon la revendication n° 4, caractérisée en ce que la vis (4), qui a la forme d'une vis tirante, est introduite dans un taraudage du carter (1).
EP03003358A 2002-04-02 2003-02-14 Attachement des éléments de stator dans une turbine à gaz Expired - Fee Related EP1350924B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10214569A DE10214569A1 (de) 2002-04-02 2002-04-02 Statorschaufelsegmentbefestigung für eine Gasturbine
DE10214569 2002-04-02

Publications (3)

Publication Number Publication Date
EP1350924A2 EP1350924A2 (fr) 2003-10-08
EP1350924A3 EP1350924A3 (fr) 2005-02-02
EP1350924B1 true EP1350924B1 (fr) 2007-01-24

Family

ID=27816105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003358A Expired - Fee Related EP1350924B1 (fr) 2002-04-02 2003-02-14 Attachement des éléments de stator dans une turbine à gaz

Country Status (3)

Country Link
US (1) US6863497B2 (fr)
EP (1) EP1350924B1 (fr)
DE (2) DE10214569A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080221710A1 (en) * 2006-10-13 2008-09-11 General Electric Company System and methods for reducing an effect of a disturbance
US7421354B2 (en) * 2006-10-13 2008-09-02 General Electric Company Systems and methods for reducing an effect of a disturbance
EP2573328A1 (fr) * 2011-09-20 2013-03-27 Siemens Aktiengesellschaft Anneau de stator pour turbomachine et procédé de fonctionnement de l'anneau de stator
US10428832B2 (en) 2012-08-06 2019-10-01 United Technologies Corporation Stator anti-rotation lug
US20160017731A1 (en) * 2014-07-17 2016-01-21 Rolls-Royce Corporation Vane assembly
EP2977548B1 (fr) * 2014-07-22 2021-03-10 Safran Aero Boosters SA Aube et turbomachine associée
US11125092B2 (en) 2018-08-14 2021-09-21 Raytheon Technologies Corporation Gas turbine engine having cantilevered stators

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE826673C (de) * 1945-04-04 1952-01-03 Maschf Augsburg Nuernberg Ag Leitapparat mit keramischen Leitschaufeln
US2857093A (en) * 1954-12-02 1958-10-21 Cincinnati Testing & Res Lab Stator casing and blade assembly
GB856599A (en) * 1958-06-16 1960-12-21 Gen Motors Corp Improvements relating to axial-flow compressors
DE2152365C3 (de) * 1971-02-03 1973-12-06 Carrier Corp., Syracuse, N.Y. (V.St.A.) Einrichtung zum Lagern der inneren Enden von drehbar gelagerten Leitschaufeln einer Axial Stromungs maschine
DE2165529A1 (de) * 1971-12-30 1973-07-05 Kloeckner Humboldt Deutz Ag Einrichtung zum zentrieren und fixieren eines koerpers
DE2643285C3 (de) * 1976-09-25 1979-03-08 Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen Abstützvorrichtung für eine ein in Umfangsrichtung wirkendes Drehmoment aufnehmende Komponente in einem Stapel von Komponenten eines Gasturbinentriebwerkes, insbesondere eines Leitschaufelkranzes, im Gehäuse
US5846050A (en) * 1997-07-14 1998-12-08 General Electric Company Vane sector spring
US6296443B1 (en) * 1999-12-03 2001-10-02 General Electric Company Vane sector seating spring and method of retaining same

Also Published As

Publication number Publication date
US6863497B2 (en) 2005-03-08
EP1350924A2 (fr) 2003-10-08
DE50306344D1 (de) 2007-03-15
EP1350924A3 (fr) 2005-02-02
US20030185683A1 (en) 2003-10-02
DE10214569A1 (de) 2003-10-16

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