EP0079272B1 - Système d'ajustement du centrage d'une roue de turbomachine - Google Patents

Système d'ajustement du centrage d'une roue de turbomachine Download PDF

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Publication number
EP0079272B1
EP0079272B1 EP82401991A EP82401991A EP0079272B1 EP 0079272 B1 EP0079272 B1 EP 0079272B1 EP 82401991 A EP82401991 A EP 82401991A EP 82401991 A EP82401991 A EP 82401991A EP 0079272 B1 EP0079272 B1 EP 0079272B1
Authority
EP
European Patent Office
Prior art keywords
shaft
ring
bearing
wheel
measuring
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
Application number
EP82401991A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0079272A1 (fr
Inventor
Alain Marie Joseph Lardellier
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
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Application filed by Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0079272A1 publication Critical patent/EP0079272A1/fr
Application granted granted Critical
Publication of EP0079272B1 publication Critical patent/EP0079272B1/fr
Expired 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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/003—Arrangements for testing or measuring
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • 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
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures

Definitions

  • the invention relates to turbomachinery. It more particularly relates to a system for adjusting the centering of a turbomachine wheel relative to the stator ring which surrounds this wheel. It is particularly advantageous when the latter belongs to the high pressure stage of a turbojet turbine, a stage in which the narrow tolerances for centering the wheel are particularly critical.
  • patent BE-A No 675737 proposes a device for controlling the variation in distance between a machine rotor and its casing, this device comprising an inductive measurement generator whose probing head slides on the wall of the casing and being fixed on the shaft through an opening of the casing and connected to an external electrical device.
  • This solution does not provide for a measurement and correction of the parallelism between the respective axes of the rotor and the stator before determining a radial clearance for which no correction is proposed.
  • Patent US-A No. 2711935 relates to a shaft mounted on a rolling bearing with the addition of an eccentric ring between the bearing and its support.
  • a worm wheel At the end of the shaft, a worm wheel carries a measurement indicator, the key of which comes into contact with an inner surface of the wheel which is concentric with the shaft.
  • No means of directly checking the parallelism of two axes is also provided and, in this case, the object is to adjust a pressure exerted between two cylinders or rollers cooperating by their external surface.
  • Patent US-A No. 2700224 indicates means for controlling the perpendicularity of a surface to the axis of a thread, this thread and this surface being arranged on a single piece. No means of correction is associated.
  • Patent G B-A No 825265 proposes means for correcting an angular misalignment, in fact alignment in the direction of two parts of the shaft which are coupled at the level of a central journal of a turbomachine. Cylindrical sleeves with concurrent axes are used to obtain this correction.
  • the object of the invention is an adjustment system which does not have any of the drawbacks mentioned above and which, moreover, makes it possible to easily adjust the centering of a wheel in an already assembled turbine.
  • the tree in question is not necessarily the one that directly carries the wheel. It is effectively the latter when it pivots in fixed bearings, that is to say linked directly to the frame.
  • the turbine is a double-body machine in which the shaft of the centering wheel (HP wheel) is supported by an inter-shaft bearing itself supported by a pivoting shaft in fixed bearings (BP or MP wheel shaft )
  • the means of reducing the value of the offset are associated with the fixed bearing closest to this wheel. Its recentering is therefore ensured by means of the B P or M P shaft and by means of the HP shaft. It will be seen that this arrangement considerably facilitates the mounting of the compensation ring.
  • the BP stator comprises the casing 10 which carries the successive rings of fixed blades 11 and a ring 12 fixed to the upstream flange of the casing 10 and which more specifically carries the first crown of fixed blades 11 A which constitutes the inlet distributor of the BP module.
  • the HP stator portion On the upstream flange of the ring 12 is fixed the HP stator portion which includes the stator ring 13 which delimits the HP vein as well as the ferrule 14 which is fixed to the upstream flange of the ring 12 and which carries the ring. 13.
  • the casing 10 is fixed by its downstream flange to the upstream flange of the turbine frame element 15.
  • the elements which constitute the HP rotor are drawn in phantom because the measuring device 70 (see below) must be used before mounting this rotor.
  • the bearing is a roller bearing which includes the inner ring 41 fitted on the shaft 24, the rollers 42 and the outer ring 43 housed in the bore of the support 31.
  • the ring 43 is provided with a flange 44 which allows its fixing on a flat surface 32 of the support 31 by means of bolts 45.
  • the centering of the ring 43 in the bore of the support 31 is ensured by means of an interchangeable ring 46.
  • this ring 46 is a ring 46A (fig. 3 ) with concentric cylindrical surfaces 47A and 48A.
  • the ring 46 is a ring 46B (fig. 4) whose cylindrical bearings 47B and 48B are off-center by a suitable value (distance from their respective centers C2etC1).
  • the ring 46B In order to facilitate the correct positioning of the ring 46B, it has two marks on one side, an XX sign indicating the direction of the strongest offset and an X sign, diametrically opposite, indicating the direction of the most weak offset. Maintaining the orientation of the eccentric ring 46 B is ensured by the clamping in the axial direction of this eccentric ring by means of the bolts 45 bearing on the flange 44. This maintenance can also be ensured by the hooping between the surface of contact of the ring 46B and the part opposite the support 31.
  • This measuring device includes a measuring frame 60 and a measuring arm 70.
  • the frame 60 is a bracket whose vertical branch 61 is intended to fix the frame 15 of the turbine by the downstream flange thereof and whose horizontal branch 62 supports the branch 61 and a shaft support 63.
  • a large orifice 64 is formed in the vertical branch 61 to allow access downstream to the bearing 40.
  • the turbine housing (frame element 15, casing 10-12, ferrule 14) is firstly fixed to the vertical branch 61 by means of bolts 152 which pass through the downstream flange 151 of the frame element 15.
  • L 'shaft 24 is then mounted in the conical support 31 (accessible through the orifice 64 of the measuring frame) via the bearing 40 and the ring with concentric bearings 46A (fig. 3), while being supported towards the upstream by means of a bearing 65 fixed on the support 63.
  • the position of the bearing 65 is adjustable on demand in the two directions transverse to the axis of the turbine, for example by means of transverse stops (not shown) and shims such as 66.
  • an eccentricity measuring arm 70 which comprises, on the one hand, a radial support rod 71 fixed by its foot to a sleeve 72 tightened on the shaft by a screw 73 and, on the other hand, two support arms parallel to the axis of the shaft 24 and respectively fixed to nuts 76 and 77 which can slide on the rod 71 and be fixed there in determined positions.
  • the first phase of the measurement consists, on the one hand, in mounting on the external arm 74 a displacement sensor (comparator) 78 the key of which touches the flat downstream face of the flange 141 of the ferrule 14, on the other hand, to rotate the shaft 24 and to adjust the position of the bearing 65 so that the displacements of the key remain below a determined limit (for example 20 to 30 ⁇ ). It is then certain that the axis XX of the shaft 24 is perpendicular to the plane of the flange 141 and, therefore, parallel to the axis of the stator BP.
  • the second phase consists in using a comparator 79 carried by the internal arm 75 to palpate the internal wall of the ring 13 by rotating the shaft 24.
  • the reading of the indications of this comparator then makes it possible to determine the eccentricity of the shaft and ring and, therefore, to determine the offset C1-C2 and the position to be assigned to the ring 46B (fig. 4) to correct this offset.
  • the ring 46B is either produced on demand, or chosen from a batch of rings whose offset values are distributed over a determined range.
  • a verification is carried out by again planing, if necessary, the position of the shaft 24 by means of the comparator 78 and the bearing 65 and by carrying out a new measurement of eccentricity by means of the comparator 79. If the results are within the tolerances, the measuring device 70 can be dismantled and the assembly of the turbine resumed.
  • the example that has just been described relates to the case of a double-body turbine in which the HP conical shaft 53 is mounted on the BP shaft 24 by means of the inter-shaft bearing 54.
  • the invention applies without difficulty to the case where the HP turbine shaft is supported by bearings on a fixed part. The recentering is then carried out by means of an eccentric ring inserted around the downstream fixed bearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Support Of The Bearing (AREA)
  • Control Of Turbines (AREA)
EP82401991A 1981-11-05 1982-10-28 Système d'ajustement du centrage d'une roue de turbomachine Expired EP0079272B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120719A FR2515734A1 (fr) 1981-11-05 1981-11-05 Systeme d'ajustement du centrage d'une roue de turbomachine et turbomachine munie de moyens permettant l'application dudit systeme
FR8120719 1981-11-05

Publications (2)

Publication Number Publication Date
EP0079272A1 EP0079272A1 (fr) 1983-05-18
EP0079272B1 true EP0079272B1 (fr) 1985-04-10

Family

ID=9263710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401991A Expired EP0079272B1 (fr) 1981-11-05 1982-10-28 Système d'ajustement du centrage d'une roue de turbomachine

Country Status (5)

Country Link
US (1) US4548546A (ja)
EP (1) EP0079272B1 (ja)
JP (1) JPS5888403A (ja)
DE (1) DE3263023D1 (ja)
FR (1) FR2515734A1 (ja)

Families Citing this family (26)

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FR2540560B1 (fr) * 1983-02-03 1987-06-12 Snecma Dispositif d'etancheite d'aubages mobiles de turbomachine
FR2644843B1 (fr) * 1989-03-23 1991-05-24 Snecma Procede de montage de la turbine basse pression sur le corps haute pression d'une turbomachine a palier inter-arbres et outillages pour la mise en oeuvre du procede
FR2646473B1 (fr) * 1989-04-26 1991-07-05 Snecma Moteur a soufflantes contrarotatives tractrices
FR2652858B1 (fr) * 1989-10-11 1993-05-07 Snecma Stator de turbomachine associe a des moyens de deformation.
US6309177B1 (en) 1999-06-08 2001-10-30 Pratt & Whitney Canada Corp. Concentricity ring
US6839979B1 (en) * 2003-08-25 2005-01-11 General Electric Company Top mounted turbine casing alignment tool with multi-axis maneuverability
EP1609953A1 (de) * 2004-06-24 2005-12-28 BorgWarner Inc. Montageverfahren und damit zusammengestellte Strömungsmaschine
DE102005007776A1 (de) * 2005-02-19 2006-08-31 Mtu Aero Engines Gmbh Lageranordnung
DE102005025311B4 (de) * 2005-06-02 2015-05-28 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Montage eines Wälzlagers in eine Gehäusebohrung eines Kraftfahrzeuges
US7510374B2 (en) * 2005-07-28 2009-03-31 Honeywell International Inc. Non-concentric rings for reduced turbo-machinery operating clearances
FR2890110B1 (fr) * 2005-08-26 2007-11-02 Snecma Procede d'assemblage d'une turbomachine
US7625128B2 (en) 2006-09-08 2009-12-01 Pratt & Whitney Canada Corp. Thrust bearing housing for a gas turbine engine
US20090031802A1 (en) * 2007-08-03 2009-02-05 General Electric Company Rotor alignment system and method
US7878756B2 (en) * 2007-10-31 2011-02-01 United Technologies Corporation Systems and methods for controlling seal clearance in a turbine engine
US8511986B2 (en) * 2007-12-10 2013-08-20 United Technologies Corporation Bearing mounting system in a low pressure turbine
US7825532B1 (en) * 2009-04-20 2010-11-02 Barber Gerald L Electrical generator for wind turbine
US8373298B2 (en) * 2009-04-20 2013-02-12 Gerald L. Barber Electrical generator for wind turbine
US8316523B2 (en) * 2009-10-01 2012-11-27 Pratt & Whitney Canada Corp. Method for centering engine structures
CA2760454C (en) 2010-12-03 2019-02-19 Pratt & Whitney Canada Corp. Gas turbine rotor containment
WO2014164586A1 (en) * 2013-03-13 2014-10-09 United Technologies Corporation Engine mounting system
JP6455179B2 (ja) 2015-01-26 2019-01-23 株式会社Ihi センターベントチューブ調芯機構及びセンターベントチューブ支持装置
CN105458647B (zh) * 2015-11-20 2017-06-30 沈阳黎明航空发动机(集团)有限责任公司 转子与静子轴向间隙无调整的动力涡轮的装配方法
US11401835B2 (en) * 2017-06-12 2022-08-02 General Electric Company Turbine center frame
FR3068390B1 (fr) * 2017-06-28 2019-07-19 Safran Aircraft Engines Dispositif pour l'assemblage d'une turbomachine, et procede utilisant le dispositif
EP3772572A1 (en) * 2019-08-05 2021-02-10 Rolls-Royce Deutschland Ltd & Co KG Device for restraining an element of a coupling to another element of the coupling in a straight-build assembly for a module of a gas turbine engine
GB202203012D0 (en) 2022-03-04 2022-04-20 Rolls Royce Plc Brush seal

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Also Published As

Publication number Publication date
JPS5888403A (ja) 1983-05-26
DE3263023D1 (en) 1985-05-15
EP0079272A1 (fr) 1983-05-18
FR2515734A1 (fr) 1983-05-06
US4548546A (en) 1985-10-22
JPH0419365B2 (ja) 1992-03-30

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