EP1475517A1 - Fixation avec rattrapage de jeu d'un levier de commande sur des aubes a angle de calage variable - Google Patents
Fixation avec rattrapage de jeu d'un levier de commande sur des aubes a angle de calage variable Download PDFInfo
- Publication number
- EP1475517A1 EP1475517A1 EP04101927A EP04101927A EP1475517A1 EP 1475517 A1 EP1475517 A1 EP 1475517A1 EP 04101927 A EP04101927 A EP 04101927A EP 04101927 A EP04101927 A EP 04101927A EP 1475517 A1 EP1475517 A1 EP 1475517A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control lever
- control
- contact
- drive
- contact zone
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- 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. She particularly applicable to turbomachines intended for aeronautics, particularly for the control of the blades air intake guidelines in the compressors of turbomachines, such as aircraft turbojets.
- Known devices for controlling blades with variable pitch in a turbomachine comprise usually a control organ in the form of a ring surrounding a casing of the turbomachine and a plurality of levers or links.
- Each lever has a first end mounted on a pivot of a dawn the axis is that of pivoting the dawn and a second end connected by a joint to the ring of ordered. Synchronized change of position angle of the blades is thus obtained by the rotation of the ring around the axis of the turbomachine.
- 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.
- the lever being mounted rigidly on the pivot of the corresponding dawn, the rotation of the ring induces other movements relative between the ring and the portion of the mounted lever on the pivot of dawn.
- the rotational movement lavished on the vanes is essential to optimize the performance of the turbomachine and the margin to "pumping".
- the precision and hysteresis are very important to the bodies of modern high pressure. In other words, the attaching the end of the control lever to the pivot of dawn must be very precise.
- Figure 1 illustrates one such mechanism. It includes a compressor case and a boss 2 in which is mounted rotating the pivot exterior 11 of a blade 10. An inner pivot 62 of this dawn 10 is rotatably mounted in a boss 4 of the inner ring 3.
- the control lever 20 has a first portion 21 fixed rigidly to the pivot outside 11 of the blade 10 by means of a nut 63.
- a second end 22 of the control lever 20 has a control pivot 23 rotatably mounted in a hole of the control ring 30.
- the first part 21 of the control lever 20 has a square hole 24.
- the outer pivot 11 dawn 10 has a training square 64. Adjusting the latter in the training hole 24 of the control lever 20 must be very precise. This therefore requires difficult and expensive machining as all the transmission squares.
- the object of the invention is to remedy this disadvantage in proposing another fastening system of the control lever on the outer pivot of the blade.
- the main object of the invention is a blade angle control device variable in a turbomachine, having a ring of command and a plurality of control levers having each a first end provided with a hole training and mounted on a training part of an outer pivot of a corresponding blade and a second end connected to the control ring by a hinge, so that a rotation of the ring of control around the axis of the turbomachine itself resulting in a change in the wedging angle of blades.
- the control lever is sheet metal
- his training hole has a first part of training intended to be in contact with the drive portion of the outer pivot defining a first contact zone control lever / pivot outside, a game remaining between the game drive the outside pivot of the dawn and the hole driving the control lever, in a direction perpendicular to the contact zone, the rotational drive of the first end of the control lever on the training part of dawn being done through a sheet of catch-up game that builds on a part side of the control lever substantially perpendicular to the first end of the lever of control, by a second contact zone lever of control / sheet of play catching substantially parallel to the first contact zone to flatten the part of training dawn on the first end of the control lever by the first zone of contact.
- the lateral part of the control lever carrying the second contact zone lever of control / catch-up plate is perpendicular in the area of the play catch-up plate constituting the control lever, the game catch-up plate having also a curved part based on the side part of the control lever by a second contact area control lever / catch-up plate of play
- the game catch-up plate has a hole similar in size to the hole drive lever with one side comes into contact with a wall of a recess of dawn, located at the foot of the outer pivot, to form a third zone of contact sheet of catching up of game / external pivot.
- the first contact zone of the control lever / drive part has a flat shape.
- a dawn 10 there is a dawn 10 and more precisely its outer end, that is to say an outer pivot 11 connected to the blade 10 by a part 16. It is characterized by a shrinkage or recess 12 in relation to the diameter the outer pivot 11.
- the second essential part of the device is the joystick 40 which we see mainly the first end 46. This is with a training hole 45 a little wider than the section of the training part 16 of the dawn 10 and the outer pivot 11, but less wide than the main part of the dawn 10, so that the control lever 40 can take support on it.
- the training in rotation of the dawn 10 by the control lever 40 is made by a first zone contact 41 on a contact part 13 of the part of training 16 of the dawn 10, in contact with the inner wall of the drive hole 45 of the lever of 40.
- This first contact zone 40 is located in the first end 46 of the lever of 40, the side opposite a lateral portion 47 and curved about 90 ° from the first end 46.
- the purpose of the principle according to the invention is to ensure a frank contact between the contact party 13 of the training part 16 of the dawn 10 with the first end 46 of the control lever 40 to the first contact zone 41.
- a plate of catch-up 50 having a hole 54 of a width equivalent to that of the lever drive hole 45 40 to be able to be threaded on the pivot 11.
- This sheet of play catch-up 50 has a curved portion 51, making an angle about 90 ° with a clamping surface 57 of the sheet catch-up 50 and being intended to come into support on the inside of the lateral part 47 of the control lever 40 by a second contact zone 42.
- Positioning and maintaining in place the catch-up plate 50 is made by means of a nut 60 which is screwed around the pivot 11 of the dawn 10 and thus support on the inner surface 57 of the play catch-up plate 50.
- Figure 4 shows the control lever 40 alone. We distinguish the first end 46, prolonged by a central portion 49 ending in a boss 48. The latter serves for the articulation of the lever of command 40 on the control ring.
- the lateral part 47 is bent by referred to the first end 46 in which is find the recess 45.
- the second contact zone 42 of the control lever 40 is inside the lateral part 47 curved.
- the first zone contact 41 of the control lever 40 is on a side of the recess 45 opposite to the lateral part 47.
- Figure 5 shows the catch-up plate of game 50, alone. In correspondence, we distinguish between curved portion 51 carrier of the second zone of contact 52, placed on the outer surface of this curved portion 51.
- the third contact zone 53 is on one side of the hole 54, on the side of the curved portion 51.
- FIG. 6 shows the mounted assembly, in cavalier sight.
- the catch-up plate 50 mounted on the first end 46 of the lever 40 and taking support on the lateral part 47 curved by its bent portion 51.
- the whole is fixed by means of the nut 60 screwed around the pivot outside 11 of dawn 10.
Abstract
Description
- figure 1, la localisation du dispositif de l'invention dans un étage de compresseur de turbomachine ;
- figure 2, en vue cavalière, le levier de transmission selon l'art antérieur ;
- figure 3, en coupe, le dispositif selon l'invention ;
- figure 4, en vue cavalière, le levier de commande du dispositif selon l'invention ;
- figure 5, en vue cavalière, la tôle de rattrapage utilisée dans le dispositif selon l'invention ; et
- figure 6, en vue cavalière, le dispositif selon l'invention.
Claims (4)
- Dispositif de commande d'aubes (10) à angle de calage variable dans une turbomachine, comportant un anneau de commande (30) et une pluralité de leviers de commande (40) ayant chacun une première extrémité (46) munie d'un trou d'entraínement (45) et montés sur la partie d'entraínement (16) d'un pivot extérieur (11) d'une aube (10) et une deuxième extrémité (22) reliée à l'anneau de commande (30) par une articulation, de sorte qu'une rotation de l'anneau de commande (30) autour de l'axe de la turbomachine se traduit par une modification de l'angle de calage des aubes (10),
caractérisé en ce que chaque levier de commande (40) est en tôle, le trou d'entraínement (45) du levier de commande (40) possède une première partie d'entraínement (13) destinée à être en contact avec la partie d'entraínement (16) du pivot d'entraínement (11) de l'aube (10) définissant une première zone de contact (41) levier de commande (40)/pivot extérieur (11), un jeu subsistant entre la partie d'entraínement (16) du pivot extérieur (11) de l'aube (10) et le trou d'entraínement (45) du levier de commande (40), dans une direction perpendiculaire à la première zone de contact (41), l'entraínement en rotation de la première extrémité (46) du levier de commande (40) sur la partie d'entraínement (16) de l'aube (10) se faisant par l'intermédiaire d'une tôle de rattrapage de jeu (50) qui prend appui sur une partie latérale (47) du levier de commande (40), sensiblement perpendiculaire à la première extrémité (46) du levier de commande (40) par une deuxième zone de contact (42) levier de commande (40)/tôle de rattrapage de jeu (50), sensiblement parallèle à la première zone de contact, pour plaquer la partie d'entraínement (16) de l'aube (10) sur la première extrémité (46) du levier de commande (40) à la première zone de contact (41). - Dispositif de commande selon la revendication 1, caractérisé en ce que la tôle de rattrapage de jeu (50) possède un trou (54) de dimension analogue au trou d'entraínement (45) du levier de commande (40) et présentant un côté destiné à venir en contact avec une paroi (15) d'un évidement (12) de l'aube (10), à la base du pivot extérieur (11), formant ainsi une troisième zone de contact (53) tôle de rattrapage (50)/pivot extérieur (11).
- Dispositif de commande selon la revendication 1, caractérisé en ce que la partie latérale (47) du levier de commande (40) portant la deuxième zone de contact (42) levier de commande (40)/tôle de rattrapage de jeu (50) est perpendiculaire au plan de la tôle constituant le levier de commande (40), la tôle de rattrapage de jeu (50) ayant également une partie recourbée (51) prenant appui sur la partie latérale (47) du levier de commande (40) par une deuxième zone de contact (42) levier de commande (40)/tôle de rattrapage de jeu (50).
- Dispositif de commande selon la revendication 1, caractérisé en ce que la première zone de contact (41) levier de commande (40)/pivot extérieur (11) a une forme plane.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0350148 | 2003-05-07 | ||
FR0350148A FR2854648B1 (fr) | 2003-05-07 | 2003-05-07 | Fixation avec rattrapage de jeu d'un levier de commande sur des aubes a angle de calage variable |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1475517A1 true EP1475517A1 (fr) | 2004-11-10 |
EP1475517B1 EP1475517B1 (fr) | 2013-03-06 |
Family
ID=32982405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04101927A Expired - Lifetime EP1475517B1 (fr) | 2003-05-07 | 2004-05-05 | Fixation avec rattrapage de jeu d'un levier de commande sur des aubes à angle de calage variable |
Country Status (8)
Country | Link |
---|---|
US (1) | US7140838B2 (fr) |
EP (1) | EP1475517B1 (fr) |
JP (1) | JP4002907B2 (fr) |
KR (1) | KR101119204B1 (fr) |
CA (1) | CA2464809C (fr) |
FR (1) | FR2854648B1 (fr) |
RU (1) | RU2338072C2 (fr) |
UA (1) | UA80688C2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2882570A1 (fr) * | 2005-02-25 | 2006-09-01 | Snecma Moteurs Sa | Dipositif de commande d'aubes a calage variable dans une turbomachine |
FR2897120A1 (fr) * | 2006-02-03 | 2007-08-10 | Snecma Sa | Pivot d'aube a angle de calage variable de turbomachine et dispositif de commande d'une telle aube |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0505147D0 (en) * | 2005-03-12 | 2005-04-20 | Rolls Royce Plc | Securing arrangement |
US8215902B2 (en) * | 2008-10-15 | 2012-07-10 | United Technologies Corporation | Scalable high pressure compressor variable vane actuation arm |
JP5244640B2 (ja) * | 2009-02-06 | 2013-07-24 | 本田技研工業株式会社 | 自動車用成形部品の製造方法 |
US9644491B2 (en) | 2014-06-13 | 2017-05-09 | Pratt & Whitney Canada Corp. | Single bolting flange arrangement for variable guide vane connection |
DE102016224523A1 (de) * | 2016-12-08 | 2018-06-14 | MTU Aero Engines AG | Leitschaufelverstellung mit seitlich montiertem Verstellhebel |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4668165A (en) * | 1986-03-27 | 1987-05-26 | The United States Of America As Represented By The Secretary Of The Air Force | Super gripper variable vane arm |
US4767264A (en) * | 1986-10-31 | 1988-08-30 | United Technologies Corporation | Vane lever arm construction |
US5024580A (en) * | 1989-06-17 | 1991-06-18 | Rolls-Royce Plc | Control of variable stator vanes |
FR2814206A1 (fr) * | 2000-09-18 | 2002-03-22 | Snecma Moteurs | Dispositif de commande d'aubes a calage variable |
FR2835562A1 (fr) * | 2002-02-07 | 2003-08-08 | Snecma Moteurs | Agencement de pivotement d'aube de stator dans une turbomachine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5947680A (en) * | 1995-09-08 | 1999-09-07 | Ebara Corporation | Turbomachinery with variable-angle fluid guiding vanes |
US5669756A (en) * | 1996-06-07 | 1997-09-23 | Carrier Corporation | Recirculating diffuser |
-
2003
- 2003-05-07 FR FR0350148A patent/FR2854648B1/fr not_active Expired - Lifetime
-
2004
- 2004-05-04 CA CA2464809A patent/CA2464809C/fr not_active Expired - Lifetime
- 2004-05-04 US US10/837,595 patent/US7140838B2/en not_active Expired - Lifetime
- 2004-05-05 EP EP04101927A patent/EP1475517B1/fr not_active Expired - Lifetime
- 2004-05-06 JP JP2004137177A patent/JP4002907B2/ja not_active Expired - Lifetime
- 2004-05-06 RU RU2004113961/06A patent/RU2338072C2/ru active
- 2004-05-06 KR KR1020040031613A patent/KR101119204B1/ko active IP Right Grant
- 2004-05-07 UA UA20040503506A patent/UA80688C2/uk unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4668165A (en) * | 1986-03-27 | 1987-05-26 | The United States Of America As Represented By The Secretary Of The Air Force | Super gripper variable vane arm |
US4767264A (en) * | 1986-10-31 | 1988-08-30 | United Technologies Corporation | Vane lever arm construction |
US5024580A (en) * | 1989-06-17 | 1991-06-18 | Rolls-Royce Plc | Control of variable stator vanes |
FR2814206A1 (fr) * | 2000-09-18 | 2002-03-22 | Snecma Moteurs | Dispositif de commande d'aubes a calage variable |
FR2835562A1 (fr) * | 2002-02-07 | 2003-08-08 | Snecma Moteurs | Agencement de pivotement d'aube de stator dans une turbomachine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2882570A1 (fr) * | 2005-02-25 | 2006-09-01 | Snecma Moteurs Sa | Dipositif de commande d'aubes a calage variable dans une turbomachine |
EP1696104A3 (fr) * | 2005-02-25 | 2009-01-28 | Snecma | Dispositif de commande d'aubes à calage variable d'une turbomachine |
US7530784B2 (en) | 2005-02-25 | 2009-05-12 | Snecma | Device for controlling variable-pitch vanes in a turbomachine |
FR2897120A1 (fr) * | 2006-02-03 | 2007-08-10 | Snecma Sa | Pivot d'aube a angle de calage variable de turbomachine et dispositif de commande d'une telle aube |
Also Published As
Publication number | Publication date |
---|---|
UA80688C2 (uk) | 2007-10-25 |
JP2004332735A (ja) | 2004-11-25 |
RU2338072C2 (ru) | 2008-11-10 |
CA2464809A1 (fr) | 2004-11-07 |
KR101119204B1 (ko) | 2012-03-20 |
RU2004113961A (ru) | 2005-10-27 |
US7140838B2 (en) | 2006-11-28 |
JP4002907B2 (ja) | 2007-11-07 |
FR2854648B1 (fr) | 2005-07-15 |
KR20040095669A (ko) | 2004-11-15 |
FR2854648A1 (fr) | 2004-11-12 |
EP1475517B1 (fr) | 2013-03-06 |
US20040265119A1 (en) | 2004-12-30 |
CA2464809C (fr) | 2012-06-26 |
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