EP0217837A1 - Internal housing for a turbo-engine. - Google Patents

Internal housing for a turbo-engine.

Info

Publication number
EP0217837A1
EP0217837A1 EP86901793A EP86901793A EP0217837A1 EP 0217837 A1 EP0217837 A1 EP 0217837A1 EP 86901793 A EP86901793 A EP 86901793A EP 86901793 A EP86901793 A EP 86901793A EP 0217837 A1 EP0217837 A1 EP 0217837A1
Authority
EP
European Patent Office
Prior art keywords
shell
inner housing
housing
structural components
parts
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
Application number
EP86901793A
Other languages
German (de)
French (fr)
Other versions
EP0217837B1 (en
Inventor
Joachim Popp
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.)
MTU Aero Engines GmbH
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0217837A1 publication Critical patent/EP0217837A1/en
Application granted granted Critical
Publication of EP0217837B1 publication Critical patent/EP0217837B1/en
Expired legal-status Critical Current

Links

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
    • 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
    • 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

Definitions

  • Inner casing for a turbomachine Inner casing for a turbomachine.
  • housings are generally divided into horizontally (or vertically) divided housings and housings consisting of rings.
  • a pot housing with suspended segments is another known option.
  • the gap control is generally carried out - if any at all - by blowing on the housing over the rotor blades.
  • the invention is intended the combination of the advantages of ring and horizontally split housings can also be achieved.
  • the assembly and disassembly is to be simplified.
  • the drawing shows an example of a housing structure with guide vanes in its vicinity.
  • the casing string consists of the annular end housings 1 and 2, the horizontally divided connecting housings 3, 4, 5 and 6, the annular blow-off housings 7 and 8 and the likewise annular lining carriers 9, 10, 11, 12 and 13.
  • the guide vanes are 14, 15 , 16, 17 and 18 marked, the indicated blades with 19, 20, 21, 22, 23 and 24. Furthermore, covers 25, 26, 27 or thermal insulation layers 28, 29, 30 and 31 applied.
  • Housings have centering seats, which also serve to hold the guide blade root; the tarnished housings are to be treated separately, the spray layers are perfectly accessible on both sides; no deep, inaccessible punctures for the guide blade root admission.
  • the guide vanes 15 are brought radially inward in the area of the dimensions 32 and pushed axially onto the lining carrier 9.
  • the lining carrier 10 is pushed into the right hooks of the guide blades 15, the radial position of these guide blades being able to be checked from the outside.
  • the axially divided housing 3 is placed over lining supports 9 and 10, is screwed radially to the joint 34 and then axially screwed to the lining supports.
  • Disassembly of the complete rotor takes place in the reverse order of assembly, the guide vanes 15 being able to be held from the outside when the lining strip 10 is disassembled.

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)

Abstract

Une turbomachine comprend un dispositif de réglage de la fente radiale entre le rotor et le carter. Le carter intérieur est composé de parties en forme de coques ayant des sièges de centrage maintenus à une distance déterminée des coques adjacentes. La construction du carter rend celui-ci facile à monter, à démonter et à entretenir. Ce carter peut être utilisé, par exemple, pour turbines à gaz d'avions.A turbomachine comprises a device for adjusting the radial slot between the rotor and the casing. The inner casing is made up of shell-shaped parts having centering seats held at a determined distance from adjacent shells. The construction of the housing makes it easy to assemble, disassemble and maintain. This casing can be used, for example, for gas turbines for airplanes.

Description

Innengehäuse für eine Strömungsmaschine. Inner casing for a turbomachine.
Bei Gehäusen von Strömungsmaschinen, vor allem mehrstufigen, ist die Angleichung des thermischen Zeitverhaltens an das des Rotors zur Gleichhaltung des Radialspaltes über Lauf- und Leitschaufeln bei Laständerung ein stetes Problem. Es ist bekannt, daß vor allem der Spalt über den Laufschaufeln großen Einfluß auf Wirkungsgrad, Pumpgrenze und Treibstoffverbrauch hat.In the case of casings of fluid-flow machines, especially multi-stage ones, the adjustment of the thermal time behavior to that of the rotor to keep the radial gap constant via rotor and guide vanes when the load changes is a constant problem. It is known that the gap above the rotor blades in particular has a great influence on efficiency, surge limit and fuel consumption.
Bei der Konstruktion dieser Gehäuse sind neben o.a. Verhalten unter anderem folgende Kriterien zu berücksichtigen:In the construction of these housings, in addition to the above Behavior taking into account the following criteria, among others:
a) Geringes Gewicht b) einfache Fertigung = grobe Toleranzen bei Unzugänglichkeit / feine Toleranzen bei Zugänglichkeit c) enge Aufnahmenuten für die Leitschaufelfüße d) leichte Montage e) leichte Demontage f) Rotor bei d\ und eNbeschaufelt und verschraubt g) Anstreifbeläge nötig (enges Laufschaufelspiel) h) leichte Reparatur i) Rundheit der Gehäuse während der Fertigung j) Rund-bleiben der Gehäuse im Betrieb k) Formtreue der Gehäuse in axialer Richtung im Betrieb Bei den heute bekannten Konstruktionen wird generell in horizontal (oder vertikal) geteilte Gehäuse und aus Ringen bestehende Gehäuse unterteilt. Ein Topfgehäuse mit eingehängten Segmenten ist eine weitere bekannte Möglichkeit.a) Low weight b) simple manufacture = rough tolerances for inaccessibility / fine tolerances for accessibility c) narrow locating grooves for the guide vane feet d) easy assembly e) easy disassembly f) rotor with d \ and eN bladed and screwed g) brushing pads necessary (tight blade clearance ) h) easy repair i) roundness of the housing during production j) the housing remains round during operation k) the shape of the housing in the axial direction during operation In the constructions known today, housings are generally divided into horizontally (or vertically) divided housings and housings consisting of rings. A pot housing with suspended segments is another known option.
Die Spaltkontrolle erfolgt im allgemeinen - wenn überhaupt eine solche vorgesehen ist - über Anblasung der Gehäuse über den Laufschaufeln.The gap control is generally carried out - if any at all - by blowing on the housing over the rotor blades.
Bei horizontal oder vertikal geteilten Gehäusen bestehen andere Probleme.There are other problems with horizontally or vertically split housings.
Die Vorteile der einen Bauart konnten andererseits nicht in der anderen angewendet werden:On the other hand, the advantages of one design could not be applied to the other:
Bei Ringgehäusen:For ring housings:
- radiale Steifigkeit und thermische Trägheit der Flanschen- radial stiffness and thermal inertia of the flanges
- einfache Fertigung- simple manufacturing
- leichte Montage und Demontage der Leitschaufeln- Easy assembly and disassembly of the guide vanes
- Anstreifbeläge in seperaten Trägern - Reparaturfreundlichkeit- Rub-on surfaces in separate carriers - Ease of repair
- Rundbleiben im Betrieb- Staying round in operation
Bei horizontal geteilten Gehäusen:For horizontally split housings:
- leichte Montage und Demontage der Gehäuse- Easy assembly and disassembly of the housing
- Rotor beschaufelt und verschraubt- Blades and screwed rotor
Mit der Erfindung soll neben der Optimierung des thermischen (Radial-) Spaltverhaltens einer Strömungsmaschine auch eine Verwirklichung der Kombination der Vorteile von Ring- und horizontal geteilten Gehäusen erreicht werden.In addition to the optimization of the thermal (radial) splitting behavior of a turbomachine, the invention is intended the combination of the advantages of ring and horizontally split housings can also be achieved.
Gelöst wird diese Aufgabe durch die Merkmale des Anspruchs 1. Weitere Merkmale sind den Unteransprüchen sowie der Beschreibung und Zeichnung eines Ausführungsbeispiels zu entnehmen. Die Montage und Demontage ist zu vereinfachen. Die Zeichnung zeigt einen beispielsweisen Gehäuseaufbau mit Leitschaufeln in seiner Umgebung. Der Gehäusestrang besteht aus den ringförmigen Endgehäusen 1 und 2, den horizontal geteilten Verbindungsgehäusen 3, 4, 5 und 6 den ringförmigen Abblasegehäusen 7 und 8 sowie den ebenfalls ringförmigen Belagträgern 9, 10, 11, 12 und 13. Die Leitschaufeln sind mit 14, 15, 16, 17 und 18 gekennzeichnet, die angedeuteten Laufschaufeln mit 19, 20, 21, 22, 23 und 24. Weiterhin sind zur Abschirmung der das thermische Verhalten bestimmenden Flanschpaare Abdeckungen 25, 26, 27 vorgesehen bzw. Wärmedämmschichten 28, 29, 30 und 31 aufgebracht.This object is achieved by the features of claim 1. Further features can be found in the subclaims and in the description and drawing of an exemplary embodiment. The assembly and disassembly is to be simplified. The drawing shows an example of a housing structure with guide vanes in its vicinity. The casing string consists of the annular end housings 1 and 2, the horizontally divided connecting housings 3, 4, 5 and 6, the annular blow-off housings 7 and 8 and the likewise annular lining carriers 9, 10, 11, 12 and 13. The guide vanes are 14, 15 , 16, 17 and 18 marked, the indicated blades with 19, 20, 21, 22, 23 and 24. Furthermore, covers 25, 26, 27 or thermal insulation layers 28, 29, 30 and 31 applied.
Aus Nachstehendem sind die Vorteile der Erfindung gegenüber dem Stand der Technik ersichtlich:The advantages of the invention over the prior art can be seen from the following:
- thermisches Verhalten: optimiert durch Anordnung der steifen Flansche über den Laufschaufeln und günstiges Verhältnis radialer Flanschhöhe zu Laufschaufellänge, durch Abschirmelemente und Wärmedämmschichten. Das Bestreben horizontal geteilter Gehäuse Zitronenform anzunehmen wird durch diese steifen Flansche nicht auf die Ringraumkontur übertragen. - Fertigung :- Thermal behavior: optimized by arranging the rigid flanges over the rotor blades and a favorable ratio of radial flange height to rotor blade length, by shielding elements and thermal insulation layers. The striving to adopt a horizontally divided housing in the shape of a lemon is not transferred to the contour of the annulus by these rigid flanges. - Manufacturing:
Gehäuse besitzen Zentriersitze, die gleichzeitig der Leitschaufelfußaufnähme dienen; die mit Anlaufbelag versehenen Gehäuse sind separat zu behandeln, die Spritzschichten beidseitig einwandfrei zugänglich; keine tiefen, unzugänglichen Einstiche für die Leitschaufelfußaufnähme.Housings have centering seats, which also serve to hold the guide blade root; the tarnished housings are to be treated separately, the spray layers are perfectly accessible on both sides; no deep, inaccessible punctures for the guide blade root admission.
- Montage bei kompletten Rotor:- Assembly with complete rotor:
Bei z.B. bereits erfolgter Montage der Teile 1 , 14 und 9 werden die Leitschaufeln 15 im Bereich der Maße 32 radial nach innen gebracht und axial auf den Belagträger 9 geschoben. Als nächstes wird der Belagträger 10 in die rechten Haken der Leitschaufeln 15 geschoben, wobei die radiale Lage dieser Leitschaufeln von außen noch kontrolliert werden kann. Anschließend wird das axial geteilte Gehäuse 3 über Belagträger 9 und 10 gesetzt, an der Teilfuge 34 radial und anschließend axial mit den Belagträgern verschraubt. - Demontage beim kompletten Rotor: Erfolgt in umgeliehrrer Montagereihenfolge, wobei die Leitschaufeln 15-bei der Demontage des Belagstreifens 10 von außen gehalten werden können.With e.g. the parts 1, 14 and 9 have already been assembled, the guide vanes 15 are brought radially inward in the area of the dimensions 32 and pushed axially onto the lining carrier 9. Next, the lining carrier 10 is pushed into the right hooks of the guide blades 15, the radial position of these guide blades being able to be checked from the outside. Subsequently, the axially divided housing 3 is placed over lining supports 9 and 10, is screwed radially to the joint 34 and then axially screwed to the lining supports. - Disassembly of the complete rotor: takes place in the reverse order of assembly, the guide vanes 15 being able to be held from the outside when the lining strip 10 is disassembled.
- Anstreifbeläge: in eigenen Ringen- Rubbing surfaces: in their own rings
- Reparatur:- repair:
Schaufelschaden siehe Demontage, Belagschaden siehe Anstreifbeläge.Damage to the shovel, see dismantling, damage to the covering, see rubbing-on rubbers.
- Rundheit während Fertigung: radiale Flanschhöhe, Masse der Belagträger u.a. sichern eine relativ größere Rundheit der Ringgehäuse gegenüber den anderen Konstruktionen. Eine eventuelle Zitronenform der horizontal geteilten- Roundness during manufacture: radial flange height, mass of the lining carrier, etc. ensure a relatively greater roundness of the ring housing compared to the other designs. A possible lemon shape of the horizontally divided
Gehäuse fällt kaum ins Gewicht.Housing is hardly significant.
- Rundheit im Betrieb: durch Durchmesserzentrierung wesentlich besser als bei Bolzenzentrierung gewährleistet; steife, radial hohe Flansche ohne Scallops lassen sich bei Laständerung nicht in Vieleckform bringen. Eine eventuelle Zitronenform der horizontal geteilten Gehäuse wirkt sich über die steifen Ringgehäuseflansche nicht auf den Ringraum aus- Roundness in operation: thanks to diameter centering, it is much better than with bolt centering; Rigid, radially high flanges without scallops cannot be made into polygons when the load changes. A possible lemon shape of the horizontally divided housing does not affect the annular space via the rigid ring housing flanges
- Formtreue im Betrieb: in axialer Richtung gleichmäßig und kräftig gestaltete Gehäuse neigen kaum zu Verformungen. Etwaiger Längsverzug zwischen Teilfugenflansch und Gehäusewandung wirkt sich bei den kurzen Axiallängen der Teilfugenflansche nicht aus.- Shape retention during operation: housings with a uniform and strong design in the axial direction hardly tend to deform. Any longitudinal distortion between the joint flange and the housing wall has no effect on the short axial lengths of the joint flanges.
Abwandlungen der dargestellten und beschriebenen Ausführungsbeispiele können ebenso wie die Kombination einzelner Merkmale vorgenommen werden ohne hierdurch den Rahmen der Erfindung zu verlassen. Modifications of the illustrated and described exemplary embodiments can be made as well as the combination of individual features without thereby leaving the scope of the invention.
B e z u g s z e i c h e n l i s t eB e z u g s z e i c h e n l i s t e
1 Endgehäuse vorne1 front housing
2 " hinten2 "rear
3 Verbindungsgehäuse3 connection housings
4 "4 "
5 "5 "
6 "6 "
7 Abblasegehäuse7 blow-off housing
8 "8th "
9 Belagträger9 brake pads
10 "10 "
11 "11 "
12 "12 "
13 "13 "
14 Leitschaufel14 guide vane
15 "15 "
16 "16 "
17 "17 "
18 "18 "
19 Laufschaufel19 moving blade
20 "20 "
21 "21 "
22 "22 "
23 "23 "
24 "24 "
25 Abdeckung25 cover
26 "26 "
27 "27 "
28 Wärmedämmschicht28 thermal barrier coating
29 "29 "
30 "30 "
21 "21 "
32 Montageteilmaß 33 Außengehäuse32 Mounting part size 33 outer housing
34 Trennlinien34 dividing lines

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Thermische Strömungsmaschine mit Mitteln zur Kontrolle bzw. Konstanthaltung des Radialspaltes zwischen Rotor und inneren, aus schalenartigen Teilen zusammengesetztem Gehäuse, das Temperaturwechseln im Betrieb ausgesetzt ist, dadurch gekennzeichnet, daß Belagträger (9-13) und schalenartige Innengehäuseteile (3-6) in Axialrichtung abwechselnd hintereinander angeordnet und miteinander lösbar verbunden sind, indem Flansche der schalenartigen Innengehäuseteile (3-6) zwischen sich Radialstege der Belagträger (9-13) aufnehmen, die, an einander zugekehrten Flächen Umfangs-Zentriersitze (41) aufweisen, jeweils zwischen zwei benachbarten Belagträgern ein Fuß einer Leitschaufel (15-18) eingesetzt und formschlüssig gehalten ist; die schalenartigen Innengehäuseteile1. Thermal fluid machine with means for checking or keeping the radial gap between the rotor and the inner, composed of shell-like parts housing, which is exposed to temperature changes in operation, characterized in that lining carrier (9-13) and shell-like inner housing parts (3-6) in Axial direction are alternately arranged one behind the other and releasably connected to each other by flanges of the shell-like inner housing parts (3-6) between them accommodate radial webs of the lining carrier (9-13), which have circumferential centering seats (41) on facing surfaces, each between two adjacent ones Base carriers a foot of a guide vane (15-18) is inserted and held in a form-fitting manner; the shell-like inner housing parts
(3-6) eine Trennebene (34) aufweisen, die parallel zur Achsrichtung verläuft und durch die Mittelachse hindurchgeht. Teile der Schalen (von 3-6) mittels quer zur Achsrichtung zugeordneter Schrauben (35) lösbar verbunden sind und daß die schalenartigen Innengehäuseteile (3-6) über Abdeckringe (25, 26, 27) mit dem Außengehäuse (33) verbunden sind. (3-6) have a parting plane (34) which runs parallel to the axial direction and passes through the central axis. Parts of the shells (from 3-6) are detachably connected by means of screws (35) assigned transversely to the axial direction and that the shell-like inner housing parts (3-6) are connected to the outer housing (33) via cover rings (25, 26, 27).
2. Strömungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Flanschpaare (9a-13a) der Schalen (3-6) welche sich radial erstrecken und zwischen sich die2. Turbomachine according to claim 1, characterized in that the flange pairs (9a-13a) of the shells (3-6) which extend radially and between them
Radialstege der Belagträger (19-24) aufnehmen, an je einer Trennungslinie um ein vorherbestimmtes Maß (32) zu Montagezwecken axial auseinanderdrückbar sind.Take up the radial webs of the brake pads (19-24), each of which can be axially separated by a predetermined dimension (32) for assembly purposes.
3. Strömungsmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die abwechselnde Anordnung von schalenartigen (3-6) und von ringförmigen (9-13) Strukturbauteilen des inneren Gehäuses derart gestaltet ist, daß sie durch Ineinandergreifen korrespondierender Vorsprünge und Ausnehmungen gehalten sind.3. Turbomachine according to claim 1 or 2, characterized in that the alternating arrangement of shell-like (3-6) and of annular (9-13) structural components of the inner housing is designed such that they are held by interlocking corresponding projections and recesses.
4. Strömungsmaschine nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß das Austauschen von Strukturbauteilen wie Belagträgern (9-13) durch axiales Auseinanderdrücken und Abheben der verbindenden schalenartigen Gehäuseteile (3-6) mit Hilfe eines Hilfsringes (37) erfolgt, ohne den gesamten Verbund der Strukturbauteile zu demontieren.4. Fluid machine according to claim 1, 2 or 3, characterized in that the replacement of structural components such as lining carriers (9-13) by axially pressing apart and lifting the connecting shell-like housing parts (3-6) with the aid of an auxiliary ring (37) without to dismantle the entire assembly of structural components.
5. Strömungsmaschine nach einem der vorhergehenden Ansprüche gekennzeichnet durch Anfangs- und Endgehäuse (1,2) in Form von Ringen bleibender Rundheit auch bei thermischen Dehnungen.5. Turbomachine according to one of the preceding claims, characterized by a start and end housing (1, 2) in the form of rings of permanent roundness even with thermal expansions.
6. Strömungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Strukturbauteile (3-6 und 9-13) rotationssymmetrisch und koaxial fluchtend ausgebildet sind. 6. Turbomachine according to one of the preceding claims, characterized in that the structural components (3-6 and 9-13) are rotationally symmetrical and coaxially aligned.
EP86901793A 1985-03-14 1986-03-12 Internal housing for a turbo-engine Expired EP0217837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853509193 DE3509193A1 (en) 1985-03-14 1985-03-14 FLOWING MACHINE WITH INNER HOUSING
DE3509193 1985-03-14

Publications (2)

Publication Number Publication Date
EP0217837A1 true EP0217837A1 (en) 1987-04-15
EP0217837B1 EP0217837B1 (en) 1988-11-23

Family

ID=6265228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901793A Expired EP0217837B1 (en) 1985-03-14 1986-03-12 Internal housing for a turbo-engine

Country Status (5)

Country Link
US (1) US4778337A (en)
EP (1) EP0217837B1 (en)
JP (1) JPS62502207A (en)
DE (2) DE3509193A1 (en)
WO (1) WO1986005546A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826397A (en) * 1988-06-29 1989-05-02 United Technologies Corporation Stator assembly for a gas turbine engine
US5127794A (en) * 1990-09-12 1992-07-07 United Technologies Corporation Compressor case with controlled thermal environment
WO2003044329A1 (en) * 2001-11-20 2003-05-30 Alstom Technology Ltd Gas turbo group
EP2184445A1 (en) * 2008-11-05 2010-05-12 Siemens Aktiengesellschaft Axial segmented vane support for a gas turbine

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Publication number Priority date Publication date Assignee Title
NL74168C (en) * 1946-02-25
FR964650A (en) * 1947-04-16 1950-08-19
CH421142A (en) * 1965-01-12 1966-09-30 Escher Wyss Ag Housing for a gas or steam turbine
CH419184A (en) * 1965-01-12 1966-08-31 Escher Wyss Ag Rigid guide apparatus for a gas or steam turbine with two or more guide vane rings
US3343806A (en) * 1965-05-27 1967-09-26 Gen Electric Rotor assembly for gas turbine engines
US4023919A (en) * 1974-12-19 1977-05-17 General Electric Company Thermal actuated valve for clearance control
GB1501916A (en) * 1975-06-20 1978-02-22 Rolls Royce Matching thermal expansions of components of turbo-machines
US4019320A (en) * 1975-12-05 1977-04-26 United Technologies Corporation External gas turbine engine cooling for clearance control
GB2111129A (en) * 1980-10-21 1983-06-29 Rolls Royce Mounting arrangement for a stage of stator blades for a gas turbine engine
GB2110306B (en) * 1981-11-26 1985-02-13 Roll Royce Limited Turbomachine housing
GB2115487B (en) * 1982-02-19 1986-02-05 Gen Electric Double wall compressor casing
JPH041309U (en) * 1990-04-19 1992-01-08

Non-Patent Citations (1)

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Title
See references of WO8605546A1 *

Also Published As

Publication number Publication date
DE3509193A1 (en) 1986-09-25
WO1986005546A1 (en) 1986-09-25
JPS62502207A (en) 1987-08-27
EP0217837B1 (en) 1988-11-23
DE3661281D1 (en) 1988-12-29
US4778337A (en) 1988-10-18

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