Centripetal flow air bleed device

Details Centripetal flow air bleed device Centripetal flow air bleed device

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 25/04 (2006.01) F01D 5/08 (2006.01) F04D 29/58 (2006.01) F04D 29/66 (2006.01)

Patent

CA 2387462

The invention relates to a device for sampling the centripetal flow of air provided between two discs (3a, 3b) of a turbomachine compressor (1). This device includes an annular support (10) attached to one side of one of said discs (3a, 3b) and a plurality of tubes (11) for the sampling of air substantially radially mounted in openings formed in said support (10), each tube (11) being provided with means to reduce the vibrations of said tube (11) during the operation of the turbomachine. Ways to reduce the vibrations of a sample tube (11) comprise a shock absorbing tube (20) held in a hole on the support ring (10) and around the radially outer portion of said sampling tube (11), the radially interior end (26) of said shock absorbing tube (20) enclosing a corresponding area 27 of said sampling tube (11) and an annular space being provided between the middle area of said shock absorbing tube (20) and said sampling tube (11).

L'invention concerne un dispositif de prélèvement d'air par écoulement centripète prévu entre deux disques (3a, 3b) d'un compresseur (1) de turbomachine. Ce dispositif comporte un support annulaire (10) fixé sur une face de l'un desdits disques (3a, 3b) et une pluralité de tubes de prélèvement (11) d'air montés sensiblement radialement dans des orifices ménagés dans ledit support (10), chaque tube (11) étant équipé de moyens pour réduire les vibrations dudit tube (11) lors du fonctionnement de la turbomachine. Les moyens pour réduire les vibrations d'un tube de prélèvement (11) comportent un tube amortisseur (20) retenu dans un orifice du support annulaire (10) et entourant la partie radialement extérieure dudit tube de prélèvement (11), l'extrémité radialement intérieure (26) dudit tube amortisseur (20) enserrant une zone correspondante 27 dudit tube de prélèvement (11) et un espace annulaire étant prévu entre la zone médiane dudit tube amortisseur (20) et ledit tube de prélèvement (11).

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