Showing papers by "Alain Dominique Gendraud published in 2001"

Arrangement for adjusting the diameter of a gas turbine stator

Abstract: An arrangement for adjusting the diameter of a gas turbine stator includes a casing having a main portion and rings bordering a vein of a gas flow and located in front of respective levels of mobile blades of a rotor, and communication passages of a gas flow under pressure. The rings are surrounded by the casing and fixed thereto by circular groups of spacers. The rings include a wall extending from the casing to one of the rings and separating two chambers. The wall includes an outside edge curved into a spacer hook and engaged between the main portion of the casing and a respective appendage curved into a casing hook associated with the spacer hook. The communication passages of the gas flow under pressure exist between the chambers. At least one of the communication passages is realized by cavities through a junction of hooks.

Linking arrangement of a turbine stator ring to a support strut

Abstract: A strut (1) fixed to a main portion of turbojet stator carries a ring (5) by a pair of hooks (4, 6) on one side and joining lips (7 and 8) on the other side. In accordance with the invention, the seal is made on the flat sides (10, 11) adjacent to the lips by elastic deflection of the tabs (13) pushing back one of the lips (7). The tabs (13) can also determine the tangential positioning of the ring (5).

Array for regulating the diameter of a stator of a gas turbine

Abstract: Ventilation gas is blown to a stator ring (3) to regulate the distance between said ring and the end of the moving blades (5) and reduce leaks in a machine turbine. Communication between successive chambers (18, 19, 20) is enabled by means of fixing hooks (26, 27, 28 et 29) of a strut (10) supporting the ring (3) on the crankcase (2) in order to reduce stress concentrations in said strut (10).

Device for adjusting the diameter of the stator of a gas turbine engine

Abstract: The ventilation gas is blown to a stator ring (3) for adjusting its distance from the end of moving blades (5) and decrease leakage in a turbine machine. to operate communications is provided between successive chambers (18, 19, 20) through hooks (26, 27, 28 and 29) for fixing a strut (10) of the ring carrier (3) to the housing (2) in order to reduce stress concentrations in said spacer (10).

Linkage arrangement of a stator ring to a support strut

Abstract: A distance sleeve (1) is fixed to a principal portion of a turbo reactor stator holding a ring (5) via a pair of brackets (4,6). On one side of the ring there are fusion clips (7,8), on the other there is a seal on a face of a plane (10,11) adjacent to the clips by an elastic flexion of tabs (13), which push back on the clips. The tabs can, therefore, secure the tangential positioning of the ring.

Agencement de liaison d'un anneau de stator de turbine à une entretoise de support

Abstract: Une entretoise (1) fixee a une portion principale de stator de turboreacteur porte un anneau (5) par une paire de crochets (4,6) d'un cote et des levres (7,8) de jonction de l'autre cote. L'etancheite est realisee sur des faces planes (10,11) adjacentes aux levres par la flexion elastique de pattes (13) repoussant une des levres (7). Les pattes (13) peuvent aussi assurer le positionnement tangentiel de l'anneau (5).