EP1293643B1 - Anordnung von Statorsegmenten in einer Turbomaschine - Google Patents

Anordnung von Statorsegmenten in einer Turbomaschine Download PDF

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Publication number
EP1293643B1
EP1293643B1 EP02292230A EP02292230A EP1293643B1 EP 1293643 B1 EP1293643 B1 EP 1293643B1 EP 02292230 A EP02292230 A EP 02292230A EP 02292230 A EP02292230 A EP 02292230A EP 1293643 B1 EP1293643 B1 EP 1293643B1
Authority
EP
European Patent Office
Prior art keywords
sectors
casing
hook
flanges
flange
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 - Lifetime
Application number
EP02292230A
Other languages
English (en)
French (fr)
Other versions
EP1293643A1 (de
Inventor
Sébastien Imbourg
Jean-Luc Soupizon
Philippe Pabion
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 Moteurs SA
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 SNECMA Moteurs SA filed Critical SNECMA Moteurs SA
Publication of EP1293643A1 publication Critical patent/EP1293643A1/de
Application granted granted Critical
Publication of EP1293643B1 publication Critical patent/EP1293643B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
    • 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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/23—Three-dimensional prismatic
    • F05D2250/232—Three-dimensional prismatic conical
    • 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
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/29—Three-dimensional machined; miscellaneous
    • F05D2250/292—Three-dimensional machined; miscellaneous tapered

Definitions

  • the subject of this invention is an assembly of sectors of a distributor, carrier of fixed vanes, ensuring the recovery of the flow of gases in a turbomachine, with a casing which envelops the stator of this machine.
  • a sector 1 of rectifier carries a pair of assembly flanges 2 and 3, respectively at the front and at the back, and which are both equipped with end hooks 4 and 5 extending in the longitudinal direction of the machine.
  • the end hook 4 at the front is placed on a hook 6 of a casing 7 by a pair of mutual support faces 8, which hold sectors 1 against movements centripetal radials in the machine; the hook 5 end of the other flange 3 bute radially to the outside against the casing 7 by a pair of faces 9, and backwards, against a second hook 10 of 7, by a pair of flat abutment faces 11.
  • clip 12 is placed around the second hook 10 to under the second end hook 5 to guard here also the sectors 1 against the movements centripetal.
  • Sectors 1 still include protruding 13 protrusions that encircle the back of ferrule segments 14 between them and the first hooks.
  • This assembly maintains sectors 1 against the movements produced by the radial forces and axially oriented towards the back they undergo during operation.
  • the editing is not very convenient to realize, since the sectors 1 inclined in the casing 7 for the lip 3 at the back passes inside the second hook 10 before rotating them around the hook end 4 at the front for the end hook 5 between the hooks 10 by a movement radial outward.
  • To realize this montage he is necessary to have two sets rotor-stator important in inner vein, which are detrimental sealing between rotor and stator.
  • the most serious disadvantage of this assembly comes from the very existence of the hooks 6 and in one piece with casing 7, which are subject to mechanical and thermal stresses important, since they are close to the vein of hot gases. It is necessary to build them in one sufficiently resistant material, as well as the housing 7 himself who would not need it since he is subjected to a lower temperature; and cracks fatigue cracking can occur in hooks 6 and 10 and spread until it breaks replace the entire casing 7.
  • US 5,131,813 A further shows an assembly of this type in which an outer end of vane door on the back side a flange element cooperating with a crankcase groove carrying a locking portion on which is fixed by screw a locking element.
  • the invention satisfies these various requirements.
  • it concerns an assembly of sectors of a ring distributor to a crankcase, sectors comprising two flanges supported at the end on the casing by radial-facing mutual abutment faces, and by plane bearing faces oriented in axial and opposite directions, a hook coming under a curved edge of one of the flanges to support the sectors against movements centripetal, characterized in that it comprises a removable flange and placed between the flanges, and carrying the hook directed towards the front, means fixing the flange on the housing, flange and housing include flat faces of mutual support oriented in the axial direction, the fixing means comprise pions passing through the housing radially, the flange being held between the housing and the pawns.
  • the hook which is the part of the assembly the most requested, can be built with a lot more freedom now that he's on a flask removable and therefore separated from the housing; he can be easily replaced when needed; finally, the editing is accomplished by a linear motion of the single flange, simpler than a movement of joint rotation of sectors.
  • the assembly is very easy if the hook comprises an outer conical face at least one central portion under the curved and narrowing edge towards the flange having said curved edge.
  • the housing has the reference 21 now, but its general shape resembles that of the previous one: its diameter decreases towards the front and its shape is therefore roughly conical to the place of the invention.
  • the new rectifier sectors carry the reference 20 and include as previously flanges 22 and 23 at the front and rear provided with end hooks 24 and 25 both bent toward the back; the end hooks 24 and 25 are here resting on the housing 21 by mutual support faces 26 and 27 oriented in radial direction, and by flat bearing faces 28 and 29 oriented in axial and opposite directions. Unlike the previous design, the assembly is much more stable.
  • An essential element of the invention is a flange 30 also bearing on the housing 21 by plane support faces 31 oriented in the direction axial, and carrying on board a hook 32 directed forward and passing under the end hook 24 of the first flange 22.
  • the flange 30 extends over a complete turn.
  • the sectors of rectifier 20 carry forward a protrusion 33 intended to retain the adjacent ferrule sectors 34 from below. Another projection 35 can be noticed; she is under the second hook endpoint 25 and serves to support areas of ferrule 36 opposed to the previous ones.
  • Pawns 37 are fitted through the housing 21 in the radial direction, and maintain the flange 30 pressed against the housing 21 by engaging behind this one to block it axially.
  • Removing brackets 6 and 10 or their replacement by simpler structures decreases the solicitations and the risks on the housing 21 all by simplifying its manufacture. It can be built in a less noble material than the casing 7. Only the hook 32 and its flange 30 remain subject to major warm-ups that require to build them in a suitable material.
  • the rectifier sectors 20 amount to one purely radial outward movement (Figure 3), involving a sliding of the pairs of bearing faces 28 and 29 and that can be aroused by moving the flange 30 forward until the stops of the faces 31 establishes: the hook 32 is provided with a face exterior of which at least one central surface 38 is tapered, tapering forward, causing the first end hook 24 rises on this surface 38 as the hook 32 advances. When the end hook 24 exceeds this surface 38 for rest on a cylindrical rear portion 39 of the upper surface of the hook 32, the sectors of 20 rectifier have been put in place. It is then enough to introduce the pins 37 into their holes for axially block the flange 30.
  • a suitable tool will be able include a deck mounted in the supporting housing the rectifier sectors 1, as well as pushers to press on the back of the flange 30 through lights 42 hollowing out the other flange 23.
  • one of the solicitations main training on rectifier sectors 1 or 20 is a backward force produced by the flow of air through them. This force translated by a tilting movement around support points for sectors 7 or 21 and by a centripetal radial force on the hook 6 or 32, which makes him vulnerable; but the consequences of a rupture would be less severe on the hook 32 than on hook 6, since it would now be enough to replace the flange 30 instead of the entire housing 7.
  • the hook 32 provides radial inward support to sectors 20, just like the hook 6 to sectors 1, since the end hook 24 is placed on it; but it offers a more rigid assembly than the hook 6, although it is not of a holding with the crankcase 21, holding the end hook 24 in a hurry against the casing 21 with bearing faces 26; the diameter of the rear portion 39 of its surface can be chosen to exert the pressing force desired at this in law.
  • the conicity of the surface 38 always allows place the flange 30 without difficulty, the hook 32 playing the role of a corner.
  • the assembly is still stiffened, while being simplified, if the sectors of ferrule 36 backwards include one end before 43 protruding on the projection 35 and introduced on the end hook 25 of the flange 23, in place of the clip 12.
  • the flange 30 needs to be replaced, it is easy to extract it if we put catches such as tapping 53, which can be grasped by threaded pins introduced through the lights 42 and extract it by pulling it backwards until the rectifier sectors 20 are released.

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)
  • Control Of Turbines (AREA)
  • Connection Of Plates (AREA)
  • Supercharger (AREA)

Claims (4)

  1. Anordnung von Sektoren eines Leitapparats an einem Gehäuse (21) in einer Turbomaschine, wobei die Sektoren zwei Schultern (22, 23) aufweisen, die sich am Ende durch in radialer Richtung orientierte wechselseitige Abstützflächen (28, 27) und durch ebene, in entgegengesetzten axialen Richtungen orientierte Abstützflächen (28, 29) an dem Gehäuse (21) abstützen, ferner einen Haken (32), der unter einen abgewinkelten Rand (24) einer der Schultern (22) zu liegen kommt, um die Sektoren (20) gegen Zentripetalbewegungen zu halten, dadurch gekennzeichnet, daß sie einen Flansch (30) aufweist, der abnehmbar und zwischen den Schultern (22, 23) angeordnet ist und an seinem Rand den nach vorn gerichteten Haken (32) trägt, ferner Befestigungsmittel (37) zum Befestigen des Flansches an dem Gehäuse, wobei der Flansch (30) und das Gehäuse (21) ebene wechselseitige Abstützfiächen (31) besitzen, die in axialer Richtung orientiert sind, wobei die Befestigungsmittel Bolzen (37) umfassen, die das Gehäuse in radialer Richtung durchdringen, und wobei der Flansch zwischen dem Gehäuse und den Bolzen gehalten wird.
  2. Anordnung von Sektoren an einem Gehäuse nach Anspruch 1, dadurch gekennzeichnet, daß der Haken zumindest in einem zentralen Abschnitt (38) unter dem abgewinkelten Rand (24) eine konische Außenfläche aufweist, die sich zu der Schulter (22) mit dem abgewinkelten Rand (24) hin verjüngt.
  3. Anordnung von Sektoren an einem Gehäuse nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Abstützflächen der Schultern (22, 23) zur Abstützung an dem Gehäuse (21) zwei Seiten (26, 27) mit radialer Ausrichtung und zwei Seiten (28, 29) mit entgegengesetzten axialen Ausrichtungen aufweisen.
  4. Anordnung von Sektoren an einem Gehäuse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß vorstehende Enden (43) von Mantelringsektoren (36), die an die Sektoren (20) des Leitapparats angrenzen, unter einen abgewinkelten Rand (25) der anderen der Schultern (23) und auf Vorsprüngen (35) der anderen der Schultern (23) zu liegen kommen.
EP02292230A 2001-09-13 2002-09-12 Anordnung von Statorsegmenten in einer Turbomaschine Expired - Lifetime EP1293643B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0111830 2001-09-13
FR0111830A FR2829525B1 (fr) 2001-09-13 2001-09-13 Assemblage de secteurs d'un distributeur de turbine a un carter

Publications (2)

Publication Number Publication Date
EP1293643A1 EP1293643A1 (de) 2003-03-19
EP1293643B1 true EP1293643B1 (de) 2004-11-24

Family

ID=8867236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02292230A Expired - Lifetime EP1293643B1 (de) 2001-09-13 2002-09-12 Anordnung von Statorsegmenten in einer Turbomaschine

Country Status (12)

Country Link
US (1) US7210901B2 (de)
EP (1) EP1293643B1 (de)
JP (1) JP4165880B2 (de)
CN (1) CN1309936C (de)
CA (1) CA2460096C (de)
DE (1) DE60202032T2 (de)
ES (1) ES2229068T3 (de)
FR (1) FR2829525B1 (de)
MA (1) MA26212A1 (de)
RU (1) RU2317422C2 (de)
UA (1) UA77434C2 (de)
WO (1) WO2003023193A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2899275A1 (fr) * 2006-03-30 2007-10-05 Snecma Sa Dispositif de fixation de secteurs d'anneau sur un carter de turbine d'une turbomachine
FR2907499B1 (fr) * 2006-10-24 2011-12-23 Snecma Module de stator de distributeur de turbine a haute pression et turbomachine comportant ce module
FR2923525B1 (fr) * 2007-11-13 2009-12-18 Snecma Etancheite d'un anneau de rotor dans un etage de turbine
JP2011169246A (ja) * 2010-02-19 2011-09-01 Mitsubishi Heavy Ind Ltd ガスタービンケーシング構造
US8360716B2 (en) * 2010-03-23 2013-01-29 United Technologies Corporation Nozzle segment with reduced weight flange
FR2960590B1 (fr) * 2010-05-25 2014-04-11 Snecma Distributeur de turbine pour une turbomachine
FR2960591B1 (fr) * 2010-06-01 2012-08-24 Snecma Dispositif pour caler en rotation un segment de distributeur dans un carter de turbomachine ; pion antirotation
RU2534333C1 (ru) * 2013-11-25 2014-11-27 Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) Статор газовой турбины
CN107060896B (zh) * 2017-05-08 2019-03-29 中国航发湖南动力机械研究所 涡轮导向器连接结构及具有其的燃气涡轮发动机
RU190280U1 (ru) * 2019-01-09 2019-06-25 Публичное Акционерное Общество "Одк-Сатурн" Устройство для фиксации сегментов сопловых лопаток в силовом корпусе статора турбины

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GB856599A (en) * 1958-06-16 1960-12-21 Gen Motors Corp Improvements relating to axial-flow compressors
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AU6962200A (en) * 2000-10-30 2002-05-02 Phoenix Steel Sales Pty Ltd Supporting means for elongated building services supply means
FR2816352B1 (fr) * 2000-11-09 2003-01-31 Snecma Moteurs Ensemble de ventilation d'un anneau de stator
RU2272151C2 (ru) * 2000-12-28 2006-03-20 Альстом Текнолоджи Лтд Лопатка статора осевой турбины
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FR2835563B1 (fr) * 2002-02-07 2004-04-02 Snecma Moteurs Agencement d'accrochage de secteurs en arc de cercle de distributeur porteur d'aubes

Also Published As

Publication number Publication date
JP2005502807A (ja) 2005-01-27
RU2317422C2 (ru) 2008-02-20
US20040206871A1 (en) 2004-10-21
CA2460096A1 (fr) 2003-03-20
EP1293643A1 (de) 2003-03-19
FR2829525A1 (fr) 2003-03-14
DE60202032D1 (de) 2004-12-30
JP4165880B2 (ja) 2008-10-15
RU2004111004A (ru) 2005-05-20
CN1553986A (zh) 2004-12-08
CA2460096C (fr) 2011-05-31
ES2229068T3 (es) 2005-04-16
WO2003023193A1 (fr) 2003-03-20
CN1309936C (zh) 2007-04-11
UA77434C2 (uk) 2006-12-15
US7210901B2 (en) 2007-05-01
FR2829525B1 (fr) 2004-03-12
DE60202032T2 (de) 2006-02-09
MA26212A1 (fr) 2004-07-01

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