EP1205637B1 - Belüftungsvorrichtung für einen Statorring - Google Patents

Belüftungsvorrichtung für einen Statorring Download PDF

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Publication number
EP1205637B1
EP1205637B1 EP01402865A EP01402865A EP1205637B1 EP 1205637 B1 EP1205637 B1 EP 1205637B1 EP 01402865 A EP01402865 A EP 01402865A EP 01402865 A EP01402865 A EP 01402865A EP 1205637 B1 EP1205637 B1 EP 1205637B1
Authority
EP
European Patent Office
Prior art keywords
stator ring
ventilating
ring
manifolds
stator
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
EP01402865A
Other languages
English (en)
French (fr)
Other versions
EP1205637A1 (de
Inventor
Jean-Baptiste Arilla
Thierry Fachat
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 EP1205637A1 publication Critical patent/EP1205637A1/de
Application granted granted Critical
Publication of EP1205637B1 publication Critical patent/EP1205637B1/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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • F01D11/20—Actively adjusting tip-clearance
    • F01D11/24—Actively adjusting tip-clearance by selectively cooling-heating stator or rotor components
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
    • F05B2230/606—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins using maintaining alignment while permitting differential dilatation
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation

Definitions

  • Such ventilation assemblies are commonly used in jet engines and consist of ducts branching to several times and whose ends are pierced to blow gas and especially air to a big number of points, judiciously distributed, of the ring.
  • Terminal ducts are very often ramps current around the rings, shaped like a circular arc and kissing part of their perimeter. Often too, the gas is blown in the axial direction, on outer ribs of the ring rather than on the ring itself, so that the diameter is controlled by those ribs that are stiffer and govern therefore the deformations of the ring proper.
  • the set that will be described here is characterized in that it is easy to manufacture, despite the large number of ducts it usually takes to use, and to assemble to the ring despite the complications that can be dilated differential thermals at different times of operation of the machine.
  • the invention thus concerns a set of ventilation of a ring stator consisting of branched ducts comprising supply ducts, distributors and ramps adjacent to the ring and provided with drill holes blowing of gas directed towards the ring, characterized in what ramps are made up of pairs of half-shells comprising a flange and a border surrounding the flange, pairs of half-shells being joined by the borders, the distributors include coil spacers between the ramps and provided with shaped end edges for adjusting on side cheek openings of the flanges.
  • a stator ring 1 is associated with a group of 2 ventilation assemblies in accordance with invention, each of which occupies a portion of the circumference of ring 1 and includes a group of ramps 3 parallel and in an arc, a distributor 4 for distributing air from ventilation between all ramps 3 and a duct 5 (shown in FIG. distributor 4.
  • the supply ducts 5 come together after one or more others distributors, which are however not shown because they are not the subject of this invention; this one more specifically the end of the sets ventilation 2, that is, their parts which are close to the ring 1 to ventilate.
  • each of the ramps 3 is composed of a half-shell left 7 and a half-shell of right 8 of which each of these is assembled to one of these.
  • the half-shells 7 and 8 of the two genres each include a flange 9 substantially flat and a border 10 established around the flange 9, the 10 borders of pairs of half-shells 7 and 8 complementary information being put in extension and attached to form a single ramp.
  • the half-shells 7 and 8 can be made by a simple operation stamping and the connections between the borders 10 can be performed by welding. This mode of manufacturing is extremely simple and avoids having to to machine tubes to bring them to the shapes and desired dimensions, which would probably be a lot more tedious.
  • half-shells of left 7 can usually be built to from the same tool as the right half-shells 8 which are symmetrical to the previous ones by the plane of seal.
  • This overall similarity would not exclude some dissimilarities of details.
  • half-shells 7 and 8 could be built with borders 10 of different width, so for example to favor the ventilation by the ramps 3 the most wide.
  • An example of application of this method appears in Figure 2, where three ramps 3 ventilate two ribs 11, the central ramp being placed between the two ribs 11 and ventilating both, which justify that its width is double.
  • cheeks 14 flanges 9 Other openings, wider, carry reference 13 and are executed through cheeks 14 flanges 9, except for an extreme half-shell 10, to form the dispenser 4.
  • the cheeks 14 extend laterally from the centers of flanges 9 in this embodiment and their are coplanar.
  • the ends of the ramps 3 are closed by continuous sheets welded to them.
  • Distributor 4 still includes coils 15 in the form of a short cylinder serving of spacers between the ramps 3 and with the conduit 5. It is often advantageous for are similar, but they can also be different in particular in length. They understand generally edges 16 to engage in the openings 13 ramps 3 to keep them in place, and flanges 17 resting on the ramps 3 to define the spacing of these.
  • the distributor 4 is formed when the coils 15 were soldered to 3. However, the distribution duct 5 remains typically separate from the distributor 4 and can slide in the input coil 15, a seal However, the seal 18 is added between them.
  • one of the coils 15 comprises plane faces and opposed 19 enclosing the end 20 (here enlarged) of the rib 11 that the corresponding coil 15 overcomes.
  • the reduction of the axial clearance between the coil 15 and the enlarged portion of the rib 11 helps to ensure the axial positioning of the distributors 4 on the ring 1. This ensures the axial positioning of the distributor 4, to adjust to the most precise gaps between the ramps 3 and the control rings 11 and master the convective exchanges created by the air-drying of the rings 11.
  • the second spool overlaps its ring with axial play, this to allow relative dilations between housings 4 and the casing 1 without generating a connection hyperstatic and unwanted constraints.
  • Brackets 22 are connected to one end of the stator ring 1 by fixing bolts 23 and include a wing 24 under one end of the ruler 6; the other end of it is placed on a boss 25 of the stator ring 1.
  • Bolts 26 and 27 are screwed to Wing 24 and Boss 25. They are hold the ends of rule 6 on these by compressing springs 28 resting on the ruler 6 by washers 29.
  • Such an arrangement has the property of to better control the support effort of the rules 6 on equets 24 and 25. If this effect is excessive, the assembly is rigid and does not allow the thermal breathing.
  • rule 6 to which ramps 3 are welded, is provided with wide openings 30 around bolts 26 and 27, so as to be able to move axially and tangentially compared to the stator ring.
  • This flexible assembly avoids therefore produce excessive internal stresses in the ventilation set 2, since the ramps 3 have the ability to move over the ring 1 without exerting too much effort.
  • the support of one of the coils 15 against the end 20 of the corresponding rib 11 offers also some flexibility in allowing all of ventilation 2 to move to the ends while being recalled back to the stator ring 1 and the bottom of the 21 of the springs 28. This flexibility is valuable in allowing to absorb dilations thermal differentials inevitable with such equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Claims (7)

  1. Belüftungsvorrichtung (2) für einen Statorring (1), bestehend aus verzweigten Leitungen mit Speiseleitungen (5), Verteilern (4) und Rampen (3), die dem Statorring benachbart und mit auf den Statorring gerichteten Bohrungen (12) zum Einblasen von Gas ausgestattet sind, wobei die Rampen aus Paaren von Halbschalen (7, 8) zusammengesetzt sind, die einen Flansch (9) und eine um den Flansch verlaufende Einfassung (10) umfassen, wobei die Paare von Halbschalen durch die Einfassungen miteinander verbunden sind,
       dadurch gekennzeichnet,    daß die Verteiler Wicklungen (15) als Stege zwischen den Rampen aufweisen, die mit Außenrändern (16) ausgestattet sind, um sich an Öffnungen (13) der seitlichen Wangen (14) der Flansche zu justieren.
  2. Belüftungsvorrichtung für einen Statorring nach Anspruch 1, dadurch gekennzeichnet, daß die Halbschalen identische Flansche besitzen, wobei die Einfassungen jedoch unterschiedliche Breiten haben können.
  3. Belüftungsvorrichtung für einen Statorring nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie V-förmige Einschnitte in Rippen (11) aufweist, in denen die Wicklungen (15) sich selbstzentrierend abstützen, so daß eine perfekte Position der Verteiler auf dem Statorring (1) radial, tangential und in Richtung einer Motorachse gewährleistet ist.
  4. Belüftungsvorrichtung für einen Statorring nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie zu den Wicklungen und zu den Rampen parallele, ebene Stützflächen (19) zum Abstützen an einer Rippe (11) des Statorrings (1) aufweist und daß die Rippe (11) sich lokal verbreitert, um das axiale Spiel mit der Wicklung zu reduzieren und die axiale Positionierung der Verteiler (4) auf dem Statorring (1) zu sichern.
  5. Belüftungsvorrichtung für einen Statorring nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie Halteleisten (6) zum Halten der Rampen gegen den Statorring aufweist, die die Rampen (3) kreuzend überdecken und mit dem Statorring fest verbunden sind.
  6. Belüftungsvorrichtung für einen Statorring nach Anspruch 5, dadurch gekennzeichnet, daß die Halteleisten durch elastische Verbindungen in Richtung des Statorrings an dem Statorring befestigt sind.
  7. Belüftungsvorrichtung für einen Statorring nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die Halteleisten durch Verbindungen (26, 27) an dem Statorring befestigt sind, die eine Gleitbewegung der Halteleisten an den Enden ermöglichen.
EP01402865A 2000-11-09 2001-11-08 Belüftungsvorrichtung für einen Statorring Expired - Lifetime EP1205637B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0014373A FR2816352B1 (fr) 2000-11-09 2000-11-09 Ensemble de ventilation d'un anneau de stator
FR0014373 2000-11-09

Publications (2)

Publication Number Publication Date
EP1205637A1 EP1205637A1 (de) 2002-05-15
EP1205637B1 true EP1205637B1 (de) 2003-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01402865A Expired - Lifetime EP1205637B1 (de) 2000-11-09 2001-11-08 Belüftungsvorrichtung für einen Statorring

Country Status (9)

Country Link
US (1) US6896038B2 (de)
EP (1) EP1205637B1 (de)
JP (1) JP3913032B2 (de)
CA (1) CA2361103C (de)
DE (1) DE60100448T2 (de)
ES (1) ES2199921T3 (de)
FR (1) FR2816352B1 (de)
RU (1) RU2276733C2 (de)
UA (1) UA73938C2 (de)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107795383A (zh) * 2016-08-29 2018-03-13 中国航发商用航空发动机有限责任公司 一种燃气轮机冷却气分配系统
CN107795383B (zh) * 2016-08-29 2019-08-06 中国航发商用航空发动机有限责任公司 一种燃气轮机冷却气分配系统

Also Published As

Publication number Publication date
JP3913032B2 (ja) 2007-05-09
DE60100448T2 (de) 2004-04-15
FR2816352B1 (fr) 2003-01-31
US6896038B2 (en) 2005-05-24
FR2816352A1 (fr) 2002-05-10
CA2361103A1 (en) 2002-05-09
EP1205637A1 (de) 2002-05-15
ES2199921T3 (es) 2004-03-01
RU2276733C2 (ru) 2006-05-20
UA73938C2 (uk) 2005-10-17
JP2002195007A (ja) 2002-07-10
CA2361103C (en) 2009-12-29
US20020053837A1 (en) 2002-05-09
DE60100448D1 (de) 2003-08-14

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