EP0797005A1 - Festhalter des Schaufelfusses in einem Verdichter - Google Patents

Festhalter des Schaufelfusses in einem Verdichter Download PDF

Info

Publication number: EP0797005A1
Authority: EP; European Patent Office
Prior art keywords: wedge; blade; foot; retaining; fan blade
Prior art date: 1996-03-21
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

EP97400620A

Other languages

English (en)

French (fr)

Other versions

EP0797005B1 (de

Inventor

Pierre Xavier Bussonnet

Jack Pierre Lauvergnat

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

Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA

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.)

1996-03-21

Filing date

1997-03-20

Publication date

1997-09-24

1997-03-20 Application filed by Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA

1997-09-24 Publication of EP0797005A1 publication Critical patent/EP0797005A1/de

2002-09-11 Application granted granted Critical

2002-09-11 Publication of EP0797005B1 publication Critical patent/EP0797005B1/de

2017-03-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- F01D5/32—Locking, e.g. by final locking blades or keys
- F01D5/323—Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor
- 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
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/50—Vibration damping features

Definitions

the invention relates to a device for retaining the foot of the blades of a fan.
the fan blades of turbojets are generally mounted with play in cells arranged in the rim of a rotor disc and are held in place, in known manner, by wedges slid into the cells under each blade root. Fixing means are provided upstream and downstream of the disc to prevent axial movement of the blades.
the object of the invention is to solve these problems and to produce a device for retaining the root of the blades, making it possible to dampen the vibrations of the blades, to avoid tilting of the blade root when the centrifugal forces are low, and allowing the rotation of the blade blade in the event of extreme force in order to avoid the blade breaking at its base.
the shim has a metallic structure comprising recessed parts filled by overmolding with a semi-rigid elastomeric material.
the wedge has an essentially metallic central zone extending to the lateral edge of the wedge located on the side of the upper surface of the blade.
the central metal zone has a machined profile set back from the profile of the cell, which allows the rotation of the blade root during a violent impact.
the wedge has two end zones upstream and downstream of a fully metallic structure and two lateral edges made of elastomeric material except in the central metal zone. Between the two lateral edges and on either side of the central metallic zone, the wedge has a metallic lower part and an upper elastomer part.
the device for retaining the foot of a fan blade the blade comprising two flanks called intrados and extrados respectively, the blade foot being engaged in a cell of a rotor disc and held in the 'alveolus by a wedge placed under the foot of the blade, is characterized in that the wedge is a curvilinear plate of longitudinal axis XX' composed of a metallic structure comprising hollow parts filled by overmolding with a semi-elastomeric material rigid, the wedge comprising an essentially metallic central zone extending to a lateral edge of the wedge situated on the side of the upper surface of the blade.
FIGS 1 and 2 there is shown a disc of a fan rotor having a rim in which are formed cells or grooves 2 oriented axially and having in section a dovetail shape.
each cell 2 is engaged by axial sliding a foot 3 of a blade 4.
the foot 3 has a section in the form of a dovetail.
an elastic wedge 5 which holds the foot 3 against the walls of the cell 2.
the wedge 5 shown in Figures 3, 4, 5 is in the form of a curvilinear plate of longitudinal axis XX 'composed of a metal structure having recessed parts filled by overmolding with a semi-rigid elastomeric material of the type polyurethane.
the wedge has two upstream 10 and downstream 11 end zones and a central zone 12 of entirely metallic structure, the central zone extending to the lateral edge of the wedge located on the upper surface side of the blade.
the wedge has two elastomer side edges 13, 14, 15 except in the central metallic zone 12 located on the side of the upper surface of the dawn.
the wedge consists of a metallic lower part 16, 17 and an upper elastomer part 18, 19.
the central metal zone 12 On the lateral edge of the wedge located on the side of the upper surface of the blade, the central metal zone 12 has a machined profile recessed 20 relative to the profile 21 of the upstream and downstream parts of the wedge, and filled with the material elastomer.
the recessed machined profile allows a torsional deformation of the central metallic zone 12 of the wedge under the effect of the torsional torque produced by the impact on the blade.
the wedge is deformed on the upper surface of the blade, allows rotation of the foot of the blade having suffered the impact and eliminates the risk of blade failure at the attachment of the foot.
the molding of the shim by the elastomeric material is carried out at a dimension slightly higher than that of the metal part.
the elasticity of the elastomer material allows the wedge to be mounted in slight compression under the foot of the blade.
the shim 5 makes it possible to maintain the foot 3 of the blades 4 in a good position thanks to the stiffness of the upstream 10 and downstream 11 metal zones associated with the extra thickness of polyurethane-type elastomer, the shim 5 being mounted in compression under the leg 3 of the blade to annihilate the residual play between the wedge and the blade root in the cavity 2 of the disc 1.
the wedge 5 ensures the absorption of part of the forces undergone by the vane impacted by the recessed machined profile 20 of the central metal zone 12. The positioning of the vane is retained after the impact.

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)

EP97400620A 1996-03-21 1997-03-20 Festhalter des Schaufelfusses in einem Verdichter Expired - Lifetime EP0797005B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9603497		1996-03-21
FR9603497A FR2746456B1 (fr)	1996-03-21	1996-03-21	Dispositif de retenue du pied des aubes d'une soufflante

Publications (2)

Publication Number	Publication Date
EP0797005A1 true EP0797005A1 (de)	1997-09-24
EP0797005B1 EP0797005B1 (de)	2002-09-11

Family

ID=9490380

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP97400620A Expired - Lifetime EP0797005B1 (de)	1996-03-21	1997-03-20	Festhalter des Schaufelfusses in einem Verdichter

Country Status (6)

Country	Link
US (1)	US5820347A (de)
EP (1)	EP0797005B1 (de)
JP (1)	JP3907259B2 (de)
CA (1)	CA2196745C (de)
DE (1)	DE69715278T2 (de)
FR (1)	FR2746456B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102414397A (zh) *	2009-04-29	2012-04-11	斯奈克玛	增强型风扇叶片垫片

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0680408B2 (ja) *	1985-10-09	1994-10-12	株式会社日立製作所	感熱式空気流量計及び感熱抵抗体
FR2803623B1 (fr) *	2000-01-06	2002-03-01	Snecma Moteurs	Agencement de retenue axiale d'aubes dans un disque
US6481971B1 (en) *	2000-11-27	2002-11-19	General Electric Company	Blade spacer
US6634863B1 (en) *	2000-11-27	2003-10-21	General Electric Company	Circular arc multi-bore fan disk assembly
FR2841609B1 (fr) *	2002-06-27	2004-09-10	Snecma Moteurs	Cale de retenue du pied des aubes de soufflante
FR2845436B1 (fr) *	2002-10-02	2004-12-31	Snecma Moteurs	Tambour formant en particulier un rotor de turbomachine, compresseur et turbomoteur comprenant un tel tambour
US6887043B2 (en) *	2003-03-28	2005-05-03	General Electric Company	Methods and apparatus for assembling gas turbine engines
FR2881174B1 (fr) *	2005-01-27	2010-08-20	Snecma Moteurs	Dispositif de positionnement d'une aube et disque aubage comportant un tel dispositif
JP5016482B2 (ja) *	2005-03-30	2012-09-05	ゼファー株式会社	風車
US7581924B2 (en) *	2006-07-27	2009-09-01	Siemens Energy, Inc.	Turbine vanes with airfoil-proximate cooling seam
US7488157B2 (en) *	2006-07-27	2009-02-10	Siemens Energy, Inc.	Turbine vane with removable platform inserts
US20080298973A1 (en) *	2007-05-29	2008-12-04	Siemens Power Generation, Inc.	Turbine vane with divided turbine vane platform
US8186961B2 (en) *	2009-01-23	2012-05-29	Pratt & Whitney Canada Corp.	Blade preloading system
FR2978796B1 (fr) *	2011-08-03	2013-08-09	Snecma	Roue a aubes de turbomachine
US8851854B2 (en)	2011-12-16	2014-10-07	United Technologies Corporation	Energy absorbent fan blade spacer
EP2946080B1 (de)	2013-01-17	2018-05-30	United Technologies Corporation	Rotorblatt-wurzel-zwischenstück mit einem griffelement
GB201417417D0 (en) *	2014-10-02	2014-11-19	Rolls Royce Plc	Slider
US10099323B2 (en) *	2015-10-19	2018-10-16	Rolls-Royce Corporation	Rotating structure and a method of producing the rotating structure
RU2695872C1 (ru) *	2018-11-12	2019-07-29	Публичное акционерное общество "ОДК-Уфимское моторостроительное производственное объединение"	Лопаточный аппарат статора осевого компрессора
CN114876869B (zh) *	2021-02-05	2024-08-06	中国航发商用航空发动机有限责任公司	风扇叶片以及航空发动机
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3236021A1 (de) *	1981-11-10	1983-05-19	BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau	Mit schaufeln versehener turbinenrotorkoerper
US5123813A (en) *	1991-03-01	1992-06-23	General Electric Company	Apparatus for preloading an airfoil blade in a gas turbine engine
US5236309A (en) *	1991-04-29	1993-08-17	Westinghouse Electric Corp.	Turbine blade assembly
US5282720A (en) *	1992-09-15	1994-02-01	General Electric Company	Fan blade retainer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3216699A (en) *	1963-10-24	1965-11-09	Gen Electric	Airfoil member assembly
US3572970A (en) *	1969-01-23	1971-03-30	Gen Electric	Turbomachinery blade spacer
US3910719A (en) *	1973-11-02	1975-10-07	Avco Corp	Compressor wheel assembly
GB1549152A (en) *	1977-01-11	1979-08-01	Rolls Royce	Rotor stage for a gas trubine engine
FR2535794A1 (fr) *	1982-11-08	1984-05-11	Snecma	Dispositif de retenue axiale et radiale d'aubes de soufflante

1996
- 1996-03-21 FR FR9603497A patent/FR2746456B1/fr not_active Expired - Fee Related
1997
- 1997-02-04 CA CA002196745A patent/CA2196745C/fr not_active Expired - Fee Related
- 1997-03-17 US US08/818,941 patent/US5820347A/en not_active Expired - Lifetime
- 1997-03-20 DE DE69715278T patent/DE69715278T2/de not_active Expired - Fee Related
- 1997-03-20 EP EP97400620A patent/EP0797005B1/de not_active Expired - Lifetime
- 1997-03-21 JP JP06851797A patent/JP3907259B2/ja not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3236021A1 (de) *	1981-11-10	1983-05-19	BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau	Mit schaufeln versehener turbinenrotorkoerper
US5123813A (en) *	1991-03-01	1992-06-23	General Electric Company	Apparatus for preloading an airfoil blade in a gas turbine engine
US5236309A (en) *	1991-04-29	1993-08-17	Westinghouse Electric Corp.	Turbine blade assembly
US5282720A (en) *	1992-09-15	1994-02-01	General Electric Company	Fan blade retainer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102414397A (zh) *	2009-04-29	2012-04-11	斯奈克玛	增强型风扇叶片垫片
CN102414397B (zh) *	2009-04-29	2015-02-18	斯奈克玛	增强型风扇叶片垫片及具有该垫片的涡轮发动机风扇

Also Published As

Publication number	Publication date
US5820347A (en)	1998-10-13
FR2746456A1 (fr)	1997-09-26
DE69715278T2 (de)	2003-05-08
FR2746456B1 (fr)	1998-04-30
JPH108907A (ja)	1998-01-13
CA2196745C (fr)	2004-09-14
EP0797005B1 (de)	2002-09-11
CA2196745A1 (fr)	1997-09-22
JP3907259B2 (ja)	2007-04-18
DE69715278D1 (de)	2002-10-17

Publication	Publication Date	Title
EP0797005B1 (de)	2002-09-11	Festhalter des Schaufelfusses in einem Verdichter
EP1540189B1 (de)	2010-06-16	Vorrichtung zum festhalten des fusses eines gebläseflügels
FR2535794A1 (fr)	1984-05-11	Dispositif de retenue axiale et radiale d'aubes de soufflante
EP2009245B1 (de)	2017-10-04	Gebläserotor
EP0488874B1 (de)	1994-11-09	Gebläserotor mit Schaufeln ohne Plattform und Stromlinien rekonstruierenden Füllstücken
EP4110691B1 (de)	2024-03-27	Fanrotor mit schaufeln mit variablem anstellwinkel und mit einem solchen rotor ausgestattete turbomaschine
EP2464828B1 (de)	2016-10-05	Schwingungsdämpfendes abstandsblech für einen ventilatorflügel
EP1693551A1 (de)	2006-08-23	Vorrichtung zur Positionierung einer Rotorschaufel und beschaufelte Rotorscheibe mit einer solchen Vorrichtung
EP1400698B1 (de)	2008-09-03	Kontrolle der axialen Lage einer Verdichterschaufel
EP2300317B1 (de)	2011-11-09	Vorrichtung zum befestigen eines blatts mit variabler einstellung
FR2939835A1 (fr)	2010-06-18	Joint d'etancheite de plateforme dans un rotor de turbomachine, methode pour ameliorer l'etancheite entre une plateforme et une aube de turbomachine.
FR2866069A1 (fr)	2005-08-12	Turboreacteur a soufflante solidaire d'un arbre d'entrainement supporte par un premier et un deuxieme paliers
EP0069620A1 (de)	1983-01-12	Dämpfungsvorrichtung für Turbomaschinenschaufeln insbesondere von Gebläsen
WO2013017805A1 (fr)	2013-02-07	Roue à aubes de turbomachine
FR2561307A1 (fr)	1985-09-20	Dispositif de verrouillage d'aubes de soufflantes
CA2475145C (fr)	2012-08-28	Plate-forme inter-aubes allegee, pour un disque de support d'aubes de turboreacteur
FR2557661A1 (fr)	1985-07-05	Poulie de variateur de vitesse a commande centrifuge
EP0854268A1 (de)	1998-07-22	Beschaufelte Rotorscheibe mit dreifüssigen Schaufeln
FR3108665A1 (fr)	2021-10-01	Rotor de soufflante comprenant des aubes à centre de gravité en amont
FR2946400A1 (fr)	2010-12-10	Disque de rotor, en particulier de soufflante, pour turbomachine
WO2022079360A1 (fr)	2022-04-21	Ensemble d'attache pour une aube de turbomachine
EP1491721A1 (de)	2004-12-29	Verdichterschaufel eines Strahltriebwerkes
FR3117534A1 (fr)	2022-06-17	Rotor de soufflante à aubes à calage variable.
FR3149039A1 (fr)	2024-11-29	Système de cale pour une aube
FR3096730A1 (fr)	2020-12-04	Ensemble pour turbomachine

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1997-08-08	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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2002-05-29	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: SNECMA MOTEURS
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