FR3087224B1 - SYSTEM FOR FIXING A SHAFT OF A CONTRAROTARY TURBINE FOR AN AIRCRAFT TURBOMACHINE - Google Patents

SYSTEM FOR FIXING A SHAFT OF A CONTRAROTARY TURBINE FOR AN AIRCRAFT TURBOMACHINE Download PDF

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Publication number
FR3087224B1
FR3087224B1 FR1859404A FR1859404A FR3087224B1 FR 3087224 B1 FR3087224 B1 FR 3087224B1 FR 1859404 A FR1859404 A FR 1859404A FR 1859404 A FR1859404 A FR 1859404A FR 3087224 B1 FR3087224 B1 FR 3087224B1
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France
Prior art keywords
shaft
turbine
nut
journal
upstream
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.)
Active
Application number
FR1859404A
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French (fr)
Other versions
FR3087224A1 (en
Inventor
Paul Ghislain Albert Levisse
Olivier Belmonte
Olivier Formica
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
Safran Aircraft Engines SAS
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 Safran Aircraft Engines SAS filed Critical Safran Aircraft Engines SAS
Priority to FR1859404A priority Critical patent/FR3087224B1/en
Publication of FR3087224A1 publication Critical patent/FR3087224A1/en
Application granted granted Critical
Publication of FR3087224B1 publication Critical patent/FR3087224B1/en
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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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/025—Fixing blade carrying members on shafts
    • 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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/24—Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like
    • 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
    • F01D25/162—Bearing supports
    • 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
    • F01D25/18—Lubricating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/072—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with counter-rotating, e.g. fan rotors
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Système de fixation d'un arbre (36) d'une turbine contrarotative (22) pour une turbomachine (10) d'aéronef, caractérisé en ce qu'il comprend : - un premier arbre (36) de turbine sensiblement tubulaire s'étendant le long et autour d'un axe X, ce premier arbre de turbine comportant à une extrémité libre, appelée extrémité amont par référence à l'écoulement des gaz dans la turbomachine, une portion amont de vissage (86) à filetage externe, et une portion aval d'accouplement (84), - un tourillon de compresseur (90) qui est monté sur ladite extrémité libre amont du premier arbre de turbine et est configuré pour coopérer avec ladite portion d'accouplement pour être solidaire en rotation du premier arbre de turbine, et - un écrou (92) de blocage du tourillon sur le premier arbre de turbine, cet écrou comprenant un tronçon amont de préhension (92a) configurée pour être mis en prise avec un outil de vissage/dévissage de l'écrou, et un tronçon intermédiaire de vissage (92b) à filetage interne configuré pour coopérer avec ladite portion amont, ledit écrou étant configuré pour prendre appui axialement sur ledit tourillon lorsqu'il est dans une position vissée et serrée, et pour être maintenu radialement par appui sur ledit tourillon et/ou ledit premier arbre de turbine lorsqu'il est dans une position complètement dévissée.System for fixing a shaft (36) of a counter-rotating turbine (22) for an aircraft turbomachine (10), characterized in that it comprises: - a first substantially tubular turbine shaft (36) extending along and around an axis X, this first turbine shaft comprising at a free end, called the upstream end with reference to the flow of gases in the turbomachine, an upstream screwing portion (86) with external thread, and a downstream coupling portion (84), - a compressor journal (90) which is mounted on said free upstream end of the first turbine shaft and is configured to cooperate with said coupling portion to be integral in rotation with the first shaft of turbine, and - a nut (92) for locking the journal on the first turbine shaft, this nut comprising an upstream gripping section (92a) configured to be engaged with a tool for screwing / unscrewing the nut, and an intermediate screwing section (92b) with internal thread co nfigured to cooperate with said upstream portion, said nut being configured to bear axially on said journal when it is in a screwed and tightened position, and to be held radially by resting on said journal and / or said first turbine shaft when ' it is in a completely unscrewed position.

FR1859404A 2018-10-10 2018-10-10 SYSTEM FOR FIXING A SHAFT OF A CONTRAROTARY TURBINE FOR AN AIRCRAFT TURBOMACHINE Active FR3087224B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1859404A FR3087224B1 (en) 2018-10-10 2018-10-10 SYSTEM FOR FIXING A SHAFT OF A CONTRAROTARY TURBINE FOR AN AIRCRAFT TURBOMACHINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1859404A FR3087224B1 (en) 2018-10-10 2018-10-10 SYSTEM FOR FIXING A SHAFT OF A CONTRAROTARY TURBINE FOR AN AIRCRAFT TURBOMACHINE

Publications (2)

Publication Number Publication Date
FR3087224A1 FR3087224A1 (en) 2020-04-17
FR3087224B1 true FR3087224B1 (en) 2021-05-21

Family

ID=65244233

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1859404A Active FR3087224B1 (en) 2018-10-10 2018-10-10 SYSTEM FOR FIXING A SHAFT OF A CONTRAROTARY TURBINE FOR AN AIRCRAFT TURBOMACHINE

Country Status (1)

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FR (1) FR3087224B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2896827B1 (en) * 2006-01-27 2008-04-25 Snecma Sa REDUCED RADIAL DIMMING ASSEMBLY BETWEEN A TURBINE SHAFT AND A TURBOMACHINE COMPRESSOR SHAFT SHAFT
FR2942273B1 (en) 2009-02-18 2011-06-10 Snecma DOUBLE FLOW MOTOR WITH CONTRAROTATIVE TURBINE WHEELS
FR2975449B1 (en) * 2011-05-17 2015-11-13 Snecma DEVICE FOR FASTENING AN ANNULAR PART ON A TURBOMACHINE SHAFT
FR2991386B1 (en) * 2012-06-05 2014-07-18 Snecma TURBOMACHINE COMPRISING FASTENING MEANS BEFORE A DEHUILING TUBE

Also Published As

Publication number Publication date
FR3087224A1 (en) 2020-04-17

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