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EP0091865A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Device for the axial retention of blade roots in a turbine wheel

Assignee: Safran Aircraft Engines SAS
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Filing: 1983-04-06
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Granted: —
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Expires: 2003-04-06
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Abstract

Abstract Translated from French Le dispositif comporte deux segments d'anneau (13) maintenus dans une gorge circonférentielle (11) prévue dans un rebord de la face amont (8) du disque de rotor. Ces segments d'anneau sont constitués d'une portion de bague cylindrique (17) sur les bords de laquelle sont prévues deux collerettes (18, 19) de largeurs inégales. La collerette la plus large (18) se place entre la paroi amont de la rainure transversale (7) formée dans le becquet (6) et la paroi (8) amont du disque du rotor (1). La bague cylindrique (17) coopère avec le fond de la gorge circonférentielle (11). La collerette la plus étroite (19) s'appuie contre la paroi amont de la gorge. Les deux segments mis bout à bout laissent entre eux un espace correspondant à la largeur d'une rainure axiale. Par déplacement des segments d'anneau dans la gorge, on amène l'espace devant l'aube à changer. Le capot porte deux doigts (21) qui viennent se placer entre les extrémités des segments d'anneau et les bloquent en position. D'autres exemples de réalisation sont décrits. The device comprises two ring segments (13) held in a circumferential groove (11) provided in a flange of the upstream face (8) of the rotor disc. These ring segments consist of a portion of cylindrical ring (17) on the edges of which are provided two flanges (18, 19) of unequal widths. The widest flange (18) is placed between the upstream wall of the transverse groove (7) formed in the spoiler (6) and the wall (8) upstream of the rotor disc (1). The cylindrical ring (17) cooperates with the bottom of the circumferential groove (11). The narrowest collar (19) bears against the upstream wall of the groove. The two segments placed end to end leave between them a space corresponding to the width of an axial groove. By moving the ring segments in the groove, the space in front of the blade is caused to change. The cover carries two fingers (21) which are placed between the ends of the ring segments and lock them in position. Other exemplary embodiments are described.

Inventors

  • 👤 Marcel Louis Antoine Rigo
  • 👤 Gilbert Sourdeval

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 06:07
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/3007; F01D5/3015

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

FR1158880A Cited
US3023998A Cited
US3397865A Cited
GB2038959A Cited
GB2058945A Cited

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