Turbomachine with cooled ring segments

Details Turbomachine with cooled ring segments Turbomachine with cooled ring segments

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 25/12 (2006.01) F01D 9/04 (2006.01) F01D 11/08 (2006.01) F01D 25/24 (2006.01)

Patent

CA 2459473

The invention concerns a turbomachine (100) comprising a casing (102), a rotor (4), and a plurality of cooled ring segments (108) installed between the casing and the rotor, each ring segment containing a main cooling cavity (162) and being attached to the casing by means of a fastening device (132). According to the invention, the fastening device (132) comprises a clamping screw (134) positioned more or less radially and pinning the ring segment against the casing. The clamping screw (134) is crossed through by a cooling airway (174) that communicates with the main cooling cavity (162) of the ring segment.

Cette invention se rapporte à une turbomachine (100) qui comprend une enveloppe (102), un rotor (4) et de multiples segments d'anneaux refroidis (108) installés entre l'enveloppe et le rotor, chaque segment d'anneau contenant une cavité de refroidissement principale (162) et étant fixé à l'enveloppe au moyen d'un dispositif de fixation (132). Selon cette invention, le dispositif de fixation (132) comprend une vis de serrage (134) placée plus ou moins radialement et chevillant le segment d'anneau contre l'enveloppe. La vis de serrage (134) est traversée par une voie aérienne de refroidissement (174) communiquant avec la cavité de refroidissement principale (162) du segment d'anneau.

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