EP2009245B1 - Gebläserotor - Google Patents

Gebläserotor Download PDF

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Publication number
EP2009245B1
EP2009245B1 EP08159121.6A EP08159121A EP2009245B1 EP 2009245 B1 EP2009245 B1 EP 2009245B1 EP 08159121 A EP08159121 A EP 08159121A EP 2009245 B1 EP2009245 B1 EP 2009245B1
Authority
EP
European Patent Office
Prior art keywords
blade root
rotor according
spacer
rotor
slot
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.)
Active
Application number
EP08159121.6A
Other languages
English (en)
French (fr)
Other versions
EP2009245A1 (de
EP2009245B2 (de
Inventor
Olivier Belmonte
Jean-Luc Christina Yvon Goga
Jean-Noël Mahieu
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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
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Application filed by SNECMA SAS filed Critical SNECMA SAS
Publication of EP2009245A1 publication Critical patent/EP2009245A1/de
Publication of EP2009245B1 publication Critical patent/EP2009245B1/de
Application granted granted Critical
Publication of EP2009245B2 publication Critical patent/EP2009245B2/de
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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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • 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
    • F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/322—Blade mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations

Definitions

  • the invention generally relates to a turbomachine rotor more particularly a fan rotor comprising a disc provided with cells at its periphery and blades respectively attached to said rotor, each blade having a blade root engaged in a corresponding cell.
  • the invention relates to an improvement to an elongate wedge which is interposed between the blade root and the bottom of the cell.
  • the invention is particularly applicable to the assembly of blades made of 3D woven composite material, which are increasingly used in blowers. It relates to a wedge well adapted to this type of blade (although not exclusively), the wedge may itself be made of the same material or a similar material.
  • One of the aims of the invention is to improve the behavior of the vanes of a rotor, particularly a fan rotor, in the event of a serious incident resulting for example from the ingestion of a bird.
  • French Patent No. 2,841,609 illustrates a wedge having metal parts and semi-rigid elastomer parts.
  • the shape of this wedge allows to take into account the movements of the foot of the dawn during a critical event mentioned above. In such circumstances, the fan blade pivots under the impact, so the blade root rotates in the disk cavity.
  • the dawn in addition to the rotational movement, is plunged forward and backward in response.
  • the front, central and rear parts of the dawn undergo torsional movements and axial dive, of different amplitude for each of them.
  • the invention proposes a new type of wedge whose shape has been defined to reduce the shock during the contact between the blade and the cell, absorb some of the energy generated by the impact and reduce the risk of damage. of dawn.
  • the invention relates first of all to a fan rotor comprising a disk provided with cells at its periphery and blades respectively attached to said rotor, each blade comprising a blade root engaged in a corresponding cell and each cell containing an elongated shim interposed between the blade root and the bottom of the cell, characterized in that said shim is of elastically deformable material, in that at least one longitudinal section of this shim has a transverse profile in the form of arc to define two lateral zones in contact with corresponding lateral zones of the blade root and remote from the bottom of the cell and a central zone facing the corresponding central zone of the cell bottom.
  • the central zone of said section is remote from the corresponding central zone of the blade root. In other words, a slight gap remains between the central zone of the section of the hold and the central area facing the blade root.
  • the wedge consists of several aforementioned sections joined by narrower junctions.
  • the wedge has a wavy profile along its own longitudinal direction.
  • said wedge may longitudinally have a central region in contact with the bottom of the cell and two end regions (on either side of the central region, longitudinally) in contact with the blade root.
  • the section of the hold in normal operation, is adapted to the shape of the surrounding parts (blower disk and fan blade) and the assembly is done with a slight constraint between the blade root and the bottom. of the cell.
  • the dawn foot is plated on its bearing, bearing on the bottom of the cell (in the central part) and below the blade root on the lateral surfaces of it.
  • the wavy profile mentioned above optimizes the contacts between the ends and the center of the wedge on the one hand and between the blade and the disk, on the other hand.
  • the wedge by its flexibility follows the combined movement of torsion-diving when a critical event occurs. It comes to interpose to limit the shock between the dawn foot and the alveolus of the disc.
  • the contact zone between the wedge and the underside of the blade root is curved so as to allow relative sliding of the two parts together, during pivoting of the blade.
  • the wedge is divided into three sections which react separately to the combined movements of the blade root and make it possible to better accompany the movements and deformations specific to each part of the blade root.
  • a polyurethane film-like coating or the like is disposed on and / or under the shim to help dissipate some of the energy of the impact and therefore limit the risk of breakage of the wedge and cracking of the blade root.
  • the wedge is made of a one-piece elastic composite material and preferably of 3D woven composite material.
  • the invention also relates to a wedge intended to be inserted in a blower rotor cell, characterized in that it consists of an elastically deformable material and in that it comprises at least one longitudinal profile section. cross-shaped arc.
  • a shim 11 intended to be inserted into a cavity 13 of a fan rotor disc 15. Such a disk is partially represented on the Figures 2 to 4 .
  • the shim 11 consists of a single block of elastically deformable material and more particularly here a composite woven 3D known per se. It is recalled that the 3-dimensional weave defining the core of the piece is coated with resin.
  • the shim comprises at least one longitudinal section arcuate cross section.
  • Such shim is intended to be inserted into a tangential cavity 13 made at the periphery of the rotor disc 15.
  • it is a fan rotor disk to which blades 20 are attached.
  • Each blade comprises a blade root 21 engaged in a corresponding cell 13.
  • a hold such as that shown in Figures 1 and 2 is housed in each cell 13 being interposed between the blade root 21 and the bottom 13a of the cell 13.
  • the shim 11 is preferably made of 3D woven composite material.
  • the wedge is of elastically deformable material.
  • the or each longitudinal section 17a-17c of this wedge has a transverse profile in the form of an arc to define two lateral zones 25a, 25b in contact with corresponding lateral zones 26a, 26b of the foot of dawn 20 while being away from the bottom of the cell. Furthermore, a central zone 29 of the wedge section is located opposite the corresponding central zone 30 of the cell bottom. This central zone of the wedge section may be in contact with the bottom of the cell, as is visible on the figure 3 .
  • the central zone of said section may be remote from the corresponding central area of the blade root, leaving a slight gap 32 between them.
  • the wedge 11 has a wavy profile in its longitudinal direction.
  • the wedge longitudinally has a central region 11a in contact with the bottom of the cell and two end regions 11b in contact with the blade root but remote from the bottom of the cell.
  • the wedge is shown mounted under stress between the blade root and the bottom of the cell, so that its longitudinal curvature between the center and the ends is less than it is in the unconstrained state, before mounting.
  • a polyurethane film-like coating or the like is disposed on and / or under the shim. This makes it possible to dissipate part of the energy of the shock, in the event of an incident, and consequently to limit the risks of breakage of the wedge or cracking of the blade root.
  • this type of shim is well adapted to maintain a blade of 3D woven composite material in its cell, at rest or in normal operation.
  • Oblong holes 35 are furthermore made in the central zones of at least some sections, to further improve the flexibility and the deformability of the different parts of the hold.
  • the shape of the wedge combined with the classic shape of the blade root optimizes the contacts between the ends and the center of the wedge on the one hand and the contact between the blade root and the walls of the blade. cell on the other hand.
  • the wedge section has two further thinning 36 between the side portions in contact with the blade root and the middle portion facing the bottom of the cell.
  • each junction 18 connecting two adjacent sections 17a-17c is substantially in the extension and continuity of the central zones of these two sections, it joins.
  • said junction has a transverse profile substantially identical to that of the central zone of a aforementioned section.
  • the proposed solution which consists in giving a form adapted to the wedge and preferably in making it in a flexible material identical to the material of the composite blade makes it possible to eliminate the risk of cracking the blade root.
  • the preload assembly allows to properly press the blade root on its bearing, bearing on the bottom of the cavity of the disc.
  • the wavy shape of the wedge in the axial direction, optimizes the contacts between the ends and the center of the wedge on the one hand and between the blade and the disk on the other hand.
  • the wedge by its flexibility, follows the combined movement of torsion / diving of the foot of dawn, during a critical event.
  • the wedge is interposed to limit the impact between the blade root and the disk cavity.
  • the area in contact between the wedge and the underside of the blade root is of curved shape, which allows a relative sliding of the two parts during a large pivot.
  • the three sections of the hold react separately to the movement of the dawn, which allows to better accompany the movement of each part of the foot of the dawn.

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)
  • Wind Motors (AREA)

Claims (11)

  1. Gebläserotor, umfassend eine Scheibe, die mit Vertiefungen an ihrer Peripherie versehen ist, und Schaufeln, die jeweils am Rotor befestigt sind, wobei jede Schaufel (20) einen Schaufelfuß (21), umfasst, der in einer entsprechenden Vertiefung (13) in Eingriff ist, und wobei jede Vertiefung einen länglichen Keil (11) einschließt, der zwischen dem Schaufelfuß und dem Boden der Vertiefung zwischengefügt ist, wobei der Keil aus einem elastisch verformbaren Material ist, dadurch gekennzeichnet, dass mindestens ein Längsabschnitt (17a-17c) dieses Keils ein Querprofil in Bogenform hat, um zwei seitliche Kontaktzonen mit entsprechenden seitlichen Zonen des Schaufelfußes, die vom Boden der Vertiefung entfernt sind, und eine zentrale Zone gegenüber der entsprechenden zentralen Zone des Bodens der Vertiefung zu definieren.
  2. Rotor gemäß Anspruch 1, dadurch gekennzeichnet, dass die zentrale Zone (29) des Abschnitts von der entsprechenden zentralen Zone des Schaufelfußes entfernt ist.
  3. Rotor gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Keil von mehreren vorgenannten Abschnitten (17a-17c) gebildet ist, die durch schmalere Verbindungen (18) verbunden sind.
  4. Rotor gemäß Anspruch 3, dadurch gekennzeichnet, dass jede Verbindung (18) im Wesentlichen in der Verlängerung und der Kontinuität der zentralen Zonen der zwei Abschnitte, die sie verbindet, angeordnet ist.
  5. Rotor gemäß Anspruch 4, dadurch gekennzeichnet, dass die Verbindung (18) ein Querprofil im Wesentlichen identisch mit jenem der zentralen Zone eines vorgenannten Abschnitts hat.
  6. Rotor gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Keil (11) entlang seiner Längsrichtung ein welliges Profil hat (Fig. 2).
  7. Rotor gemäß Anspruch 6, dadurch gekennzeichnet, dass der Keil längs einen zentralen Bereich (11a) in Kontakt mit dem Boden der Vertiefung und zwei äußerste Bereiche (11b) in Kontakt mit dem Schaufelfuß aufweist.
  8. Rotor gemäß einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass der Keil (11) unter Spannung zwischen dem Schaufelfuß (21) und dem Boden (13a) der Vertiefung montiert ist.
  9. Rotor gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Keil aus einem 3D-gewebten Verbundstoff ist.
  10. Rotor gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schaufeln (20) aus einem 3D-gewebten Verbundstoff sind.
  11. Turbomaschine, dadurch gekennzeichnet, dass sie einen Rotor gemäß einem der Ansprüche 1 bis 10 umfasst.
EP08159121.6A 2007-06-26 2008-06-26 Gebläserotor Active EP2009245B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0756015A FR2918129B1 (fr) 2007-06-26 2007-06-26 Perfectionnement a une cale intercalee entre un pied d'aube et le fond de l'alveole du disque dans laquelle il est monte

Publications (3)

Publication Number Publication Date
EP2009245A1 EP2009245A1 (de) 2008-12-31
EP2009245B1 true EP2009245B1 (de) 2017-10-04
EP2009245B2 EP2009245B2 (de) 2020-12-16

Family

ID=39154378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08159121.6A Active EP2009245B2 (de) 2007-06-26 2008-06-26 Gebläserotor

Country Status (6)

Country Link
US (2) US8529209B2 (de)
EP (1) EP2009245B2 (de)
JP (1) JP5496476B2 (de)
CA (1) CA2634942C (de)
FR (1) FR2918129B1 (de)
RU (1) RU2479724C2 (de)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
FR3124546A1 (fr) 2021-06-28 2022-12-30 Safran Aircraft Engines Aube de rotor a maintien ameliore, procede de fabrication d’une telle aube et rotor comportant une telle aube
FR3132126A1 (fr) * 2022-01-24 2023-07-28 Safran Aircraft Engines Moteur d'aéronef comprenant des aubes fixées au carter

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FR2945074B1 (fr) * 2009-04-29 2011-06-03 Snecma Cale d'aube de soufflante renforcee
US8616850B2 (en) * 2010-06-11 2013-12-31 United Technologies Corporation Gas turbine engine blade mounting arrangement
EP2455588B1 (de) 2010-11-15 2017-03-01 MTU Aero Engines GmbH Sicherungsmittel zur axialen Sicherung eines Schaufelfußes einer Turbomaschinenschaufel
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GB201106278D0 (en) * 2011-04-14 2011-05-25 Rolls Royce Plc Annulus filler system
FR2975428B1 (fr) * 2011-05-17 2015-11-20 Snecma Roue a aubes de turbomachine
EP2562356A1 (de) 2011-08-24 2013-02-27 Siemens Aktiengesellschaft Schaufelanordnung
FR2981132B1 (fr) * 2011-10-10 2013-12-06 Snecma Ensemble pour turbomachine a refroidissement de disque
US8851854B2 (en) 2011-12-16 2014-10-07 United Technologies Corporation Energy absorbent fan blade spacer
US9359906B2 (en) * 2012-12-18 2016-06-07 United Technologies Corporation Rotor blade root spacer with a fracture feature
US9422819B2 (en) * 2012-12-18 2016-08-23 United Technologies Corporation Rotor blade root spacer for arranging between a rotor disk and a root of a rotor blade
EP2938872B1 (de) * 2012-12-27 2019-01-30 United Technologies Corporation Schaufelunterfussabstandshalter mit hakenentfernung
WO2014113009A1 (en) 2013-01-17 2014-07-24 United Technologies Corporation Rotor blade root spacer with grip element
US9840922B2 (en) 2014-03-07 2017-12-12 United Technologies Corporation Fan blade spacer
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GB201417417D0 (en) * 2014-10-02 2014-11-19 Rolls Royce Plc Slider
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FR3102206B1 (fr) * 2019-10-18 2023-02-17 Safran Aircraft Engines Ensemble pour une aube de turbomachine comprenant une attache définissant une alvéole et une cale adaptée pour être reçue dans l’alvéole en même temps qu’un pied de l’aube
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US11242761B2 (en) 2020-02-18 2022-02-08 Raytheon Technologies Corporation Tangential rotor blade slot spacer for a gas turbine engine
FR3107724B1 (fr) 2020-02-27 2022-06-24 Safran Aircraft Engines Rotor de soufflante à aubes à calage variable et turbomachine équipée d’un tel rotor
KR102454379B1 (ko) * 2020-09-08 2022-10-14 두산에너빌리티 주식회사 로터 및 이를 포함하는 터보머신
CN116323390B (zh) * 2020-10-16 2025-10-28 赛峰飞机发动机公司 用于涡轮机叶片的紧固组件
FR3120389B1 (fr) 2021-03-04 2023-06-02 Safran Aircraft Engines Ensemble pour un rotor pour une turbomachine
FR3121171B1 (fr) 2021-03-25 2023-04-14 Safran Aircraft Engines Rotor de soufflante pour une turbomachine
KR20230091604A (ko) * 2021-12-16 2023-06-23 한화에어로스페이스 주식회사 보호심을 구비하는 로터 어셈블리 및 이를 포함하는 가스 터빈 엔진
FR3139159B1 (fr) * 2022-08-31 2024-07-19 Safran Aircraft Engines Roue de turbine comprenant un dispositif de maintien radial de pieds d’aube dans les alveoles d’un disque de rotor
US12146421B2 (en) * 2022-10-28 2024-11-19 Rtx Corporation Deformable root spacer for a gas turbine engine rotor blade
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3124546A1 (fr) 2021-06-28 2022-12-30 Safran Aircraft Engines Aube de rotor a maintien ameliore, procede de fabrication d’une telle aube et rotor comportant une telle aube
FR3132126A1 (fr) * 2022-01-24 2023-07-28 Safran Aircraft Engines Moteur d'aéronef comprenant des aubes fixées au carter

Also Published As

Publication number Publication date
RU2008125805A (ru) 2009-12-27
CA2634942A1 (fr) 2008-12-26
US20090004017A1 (en) 2009-01-01
EP2009245A1 (de) 2008-12-31
FR2918129B1 (fr) 2009-10-30
FR2918129A1 (fr) 2009-01-02
US8529209B2 (en) 2013-09-10
US20130259695A1 (en) 2013-10-03
JP2009008079A (ja) 2009-01-15
EP2009245B2 (de) 2020-12-16
CA2634942C (fr) 2015-12-01
JP5496476B2 (ja) 2014-05-21
RU2479724C2 (ru) 2013-04-20
US8845294B2 (en) 2014-09-30

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