EP1500791A1 - Système de guidage du pivot exterieur d'une aube à angle de calage variable, de stator de turbomachine - Google Patents
Système de guidage du pivot exterieur d'une aube à angle de calage variable, de stator de turbomachine Download PDFInfo
- Publication number
- EP1500791A1 EP1500791A1 EP04103336A EP04103336A EP1500791A1 EP 1500791 A1 EP1500791 A1 EP 1500791A1 EP 04103336 A EP04103336 A EP 04103336A EP 04103336 A EP04103336 A EP 04103336A EP 1500791 A1 EP1500791 A1 EP 1500791A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pivot
- bore
- sleeve
- diameter
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 5
- 239000002783 friction material Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
- F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
Definitions
- the invention relates to the control of the blades variable pitch angle in turbomachines, in particular the turbomachines intended for aeronautics. It applies in particular to the control of blades air intake guidelines in the compressors of turbomachines called pitch angle blades variable.
- Known devices for controlling variable pitch vanes in turbomachines comprise usually a control organ in the form of a ring surrounding the casing of the turbomachine and a plurality of control levers. Each of these last has a first end mounted on a outside pivot of a blade whose axis is that of pivoting of the blade and a second end connected, by a hinge, to the control ring.
- the synchronized modification of the angular position of blades is thus obtained by the rotation of the ring around the axis of the turbomachine, in order to be able to follow the rotational movement of the ring of ordered.
- the connection between each lever and the ring includes at least one rotational degree of freedom around an axis directed substantially radially by report to the ring.
- Figure 1 illustrates the assembly of the outer pivot 11 of a blade 10 on a boss 21 of the housing 2 of a compressor stator.
- the external pivot 11 is rotatably mounted in a bore 22 of the boss 21 via two bushings 5 and 6 mounted tight or slippery in the bore 22.
- a control lever 3 attached to the end of the pivot 11 by means of a nut 4 allows to orient in wedge the dawn 10.
- the object of the invention is therefore to increase the guide height of bushes 5 and 6 without increasing the outer diameter of the casing 2, in order to preserve the original rough case.
- the main object of the invention is a guiding system of the outside pivot of a dawn turbomachine stator variable pitch angle having an outer pivot for pivoting in a bore of determined length of the stator housing of the turbomachine.
- a socket is used single being of a material having a low coefficient of friction, the length of which is greater than the bore, protruding outward from the latter and whose inner diameter is slightly larger outside diameter of the outer pivot and in that includes a metal jacket whose diameter outside is slightly larger than the diameter inside the bore and whose inside diameter corresponds to the outside diameter of the bushing for be placed around the latter and possessing a outer hook at its outer end.
- the socket is metallic and a hook external device is provided at the end outer of the metal shirt, so that to be able to constitute a gripping element for extraction of the socket.
- the positioning of the outer pivot 11 in the bore of the boss 21 is via a bushing 50 which extends over more than the length of boss 21 and whose inside diameter is slightly greater than the outside diameter of the outer pivot 11.
- the sleeve 50 is made of composite material and is always in direct contact with its diameter inside with outer diameter of outer pivot 11. Because of the composite material that constitutes it, the coefficient of friction against another part metal is very weak and a relative displacement of these two pieces is favored.
- a shirt 40 interposed between the sleeve 50 and the boss 21 of the stator. This metal shirt 40 has a outer diameter slightly larger than the diameter inside the bore of the boss 21 to allow a fastening by hooping.
- she has a hook outside 40 at its outer end 44 which is complemented by a positioning flange 42 taking support on the boss 21 of the stator.
- the sleeve 50 has a outer hook 51 to be able to be driven during of his extraction. Indeed, this outer hook 51 bears on the outer hook 41 of the shirt metal 40.
- the extraction of the sleeve 50 allows its change without having to open the stator housing of the turbomachine.
- the socket is metallic, and in particular is composed of a steel with good characteristics of friction with the material of the pivot, for example a socket in Z12CNDV12 opposite a pivot in Z6NCT25.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- figure 1, en coupe, un montage de guidage selon l'art antérieur, et
- figure 2, en coupe, la principale réalisation du système de guidage selon l'invention.
Claims (3)
- Système de guidage du pivot extérieur (11) d'une aube (10) à angle de calage variable de stator de turbomachine possédant un pivot extérieur (11) d'aube destiné à pivoter dans un alésage (22) de longueur déterminée du carter du stator de la turbomachine,
caractérisé en ce qu'il comprend une douille (30, 50) unique étant en un matériau ayant un faible coefficient de frottement, dont la longueur est supérieure à celle de l'alésage (22), dépassant vers l'extérieur de ce dernier et dont le diamètre intérieur est légèrement supérieur au diamètre extérieur du pivot extérieur (11) et en ce qu'il comprend une chemise métallique (40) dont le diamètre extérieur est légèrement supérieur au diamètre intérieur de l'alésage et dont le diamètre intérieur correspond au diamètre extérieur de la douille (50) pour être placée autour de cette dernière et possédant un crochet extérieur (41) à son extrémité extérieure (44). - Système de guidage selon la revendication 1, caractérisé en ce que la douille (50) est métallique et comprend un crochet extérieur (51) périphérique à l'extrémité extérieure (44) de la chemise métallique.
- Système de guidage selon la revendication 1, caractérisé en ce que la chemise métallique (40) possède un rebord de positionnement (42) pour prendre appui sur un bossage (21) du carter du stator.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0350343 | 2003-07-17 | ||
FR0350343A FR2857692B1 (fr) | 2003-07-17 | 2003-07-17 | Systeme de guidage du pivot exterieur d'une aube a angle de calage variable, de stator de turbomachine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1500791A1 true EP1500791A1 (fr) | 2005-01-26 |
EP1500791B1 EP1500791B1 (fr) | 2007-05-02 |
Family
ID=33484736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04103336A Expired - Lifetime EP1500791B1 (fr) | 2003-07-17 | 2004-07-13 | Système de guidage du pivot exterieur d'une aube à angle de calage variable, de stator de turbomachine |
Country Status (9)
Country | Link |
---|---|
US (1) | US7214030B2 (fr) |
EP (1) | EP1500791B1 (fr) |
JP (1) | JP4056995B2 (fr) |
CA (1) | CA2473819C (fr) |
DE (1) | DE602004006197T2 (fr) |
ES (1) | ES2285356T3 (fr) |
FR (1) | FR2857692B1 (fr) |
RU (1) | RU2340778C2 (fr) |
UA (1) | UA83794C2 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2881146A1 (fr) * | 2005-01-27 | 2006-07-28 | Snecma Moteurs Sa | Procede de reparation d'une surface de frottement d'une aube a calage variable de turbomachine |
EP1961922A2 (fr) | 2007-02-22 | 2008-08-27 | Snecma | Commande des aubes à angle de calage variable |
WO2017013326A1 (fr) * | 2015-07-20 | 2017-01-26 | Safran Aircraft Engines | Étage d'aubes a calage variable pour une turbomachine, turbomachine et procédé de montage associé |
EP2622178A4 (fr) * | 2010-09-30 | 2017-12-27 | Rolls-Royce North American Technologies, Inc. | Agencement d'étanchéité destiné à une aube fixe à incidence variable |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2868490B1 (fr) * | 2004-04-05 | 2006-07-28 | Snecma Moteurs Sa | Douille a base de ceramique pour un systeme de calage variable d'aubes de turbomachines |
US8517661B2 (en) | 2007-01-22 | 2013-08-27 | General Electric Company | Variable vane assembly for a gas turbine engine having an incrementally rotatable bushing |
US8215902B2 (en) * | 2008-10-15 | 2012-07-10 | United Technologies Corporation | Scalable high pressure compressor variable vane actuation arm |
US10030533B2 (en) | 2012-09-21 | 2018-07-24 | United Technologies Corporation | Flanged bushing for variable vane |
CN111288020B (zh) * | 2020-02-24 | 2021-05-28 | 中国航发沈阳发动机研究所 | 一种压气机静子叶片联动结构 |
CN114251134B (zh) * | 2021-12-07 | 2024-01-26 | 萍乡德博科技股份有限公司 | 一种汽油机涡轮增压可变截面喷嘴环 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3325087A (en) * | 1965-04-28 | 1967-06-13 | David R Davis | Stator casing construction for gas turbine engines |
GB1083156A (en) * | 1965-05-17 | 1967-09-13 | Gen Electric | Improvements in control mechanism |
GB1201949A (en) * | 1966-10-31 | 1970-08-12 | United Aircraft Corp | Movable stator vane unit for a bladed fluid flow machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2082709A1 (fr) * | 1991-12-02 | 1993-06-03 | Srinivasan Venkatasubbu | Aubage de stator a incidence variable pour compresseur a ecoulement axial de turbomachine |
US6481960B2 (en) * | 2001-03-30 | 2002-11-19 | General Electric Co. | Variable gas turbine compressor vane structure with sintered-and-infiltrated bushing and washer bearings |
US6767183B2 (en) * | 2002-09-18 | 2004-07-27 | General Electric Company | Methods and apparatus for sealing gas turbine engine variable vane assemblies |
-
2003
- 2003-07-17 FR FR0350343A patent/FR2857692B1/fr not_active Expired - Fee Related
-
2004
- 2004-07-09 JP JP2004202721A patent/JP4056995B2/ja not_active Expired - Lifetime
- 2004-07-12 US US10/887,832 patent/US7214030B2/en active Active
- 2004-07-13 CA CA2473819A patent/CA2473819C/fr not_active Expired - Lifetime
- 2004-07-13 EP EP04103336A patent/EP1500791B1/fr not_active Expired - Lifetime
- 2004-07-13 DE DE602004006197T patent/DE602004006197T2/de not_active Expired - Lifetime
- 2004-07-13 ES ES04103336T patent/ES2285356T3/es not_active Expired - Lifetime
- 2004-07-16 UA UA20040705840A patent/UA83794C2/uk unknown
- 2004-07-16 RU RU2004121995/06A patent/RU2340778C2/ru active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3325087A (en) * | 1965-04-28 | 1967-06-13 | David R Davis | Stator casing construction for gas turbine engines |
GB1083156A (en) * | 1965-05-17 | 1967-09-13 | Gen Electric | Improvements in control mechanism |
GB1201949A (en) * | 1966-10-31 | 1970-08-12 | United Aircraft Corp | Movable stator vane unit for a bladed fluid flow machine |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2881146A1 (fr) * | 2005-01-27 | 2006-07-28 | Snecma Moteurs Sa | Procede de reparation d'une surface de frottement d'une aube a calage variable de turbomachine |
EP1686239A1 (fr) * | 2005-01-27 | 2006-08-02 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." | Procédé de réparation d'une surface de frottement d'une aube à calage variable de turbomachine |
US7685712B2 (en) | 2005-01-27 | 2010-03-30 | Snecma | Method for repairing a rubbing surface of a turbomachine variable-pitch blade |
EP1961922A2 (fr) | 2007-02-22 | 2008-08-27 | Snecma | Commande des aubes à angle de calage variable |
EP2622178A4 (fr) * | 2010-09-30 | 2017-12-27 | Rolls-Royce North American Technologies, Inc. | Agencement d'étanchéité destiné à une aube fixe à incidence variable |
WO2017013326A1 (fr) * | 2015-07-20 | 2017-01-26 | Safran Aircraft Engines | Étage d'aubes a calage variable pour une turbomachine, turbomachine et procédé de montage associé |
FR3039226A1 (fr) * | 2015-07-20 | 2017-01-27 | Snecma | Etage d'aubes a calage variable pour une turbomachine |
GB2556725A (en) * | 2015-07-20 | 2018-06-06 | Safran Aircraft Engines | Stage of variable-pitch blades for a turbine engine, turbine engine and associated installation method |
US10753371B2 (en) | 2015-07-20 | 2020-08-25 | Safran Aircraft Engines | Stage of variable-pitch blades for a turbine engine, turbine engine and associated installation method |
GB2556725B (en) * | 2015-07-20 | 2020-12-23 | Safran Aircraft Engines | Stage of variable-pitch blades for a turbine engine, turbine engine and associated installation method |
Also Published As
Publication number | Publication date |
---|---|
UA83794C2 (uk) | 2008-08-26 |
DE602004006197D1 (de) | 2007-06-14 |
FR2857692A1 (fr) | 2005-01-21 |
DE602004006197T2 (de) | 2007-12-20 |
US7214030B2 (en) | 2007-05-08 |
JP4056995B2 (ja) | 2008-03-05 |
RU2340778C2 (ru) | 2008-12-10 |
JP2005036806A (ja) | 2005-02-10 |
FR2857692B1 (fr) | 2007-05-11 |
ES2285356T3 (es) | 2007-11-16 |
CA2473819A1 (fr) | 2005-01-17 |
RU2004121995A (ru) | 2006-01-20 |
CA2473819C (fr) | 2012-08-28 |
EP1500791B1 (fr) | 2007-05-02 |
US20050036885A1 (en) | 2005-02-17 |
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