Device for stopping in rotation a fixed blade bearing sector in a gas turbine casing
AssigneeSnecma Moteurs
InventorsSerge Bongrand, Alain Henri Daniel Bouron, Sébastien Georges Roger Goux, Fabrice Marois, Jacky Naudet, Gabriel Radeljak, Dominique Raulin
Life of this patent
Estimating the term…
Abstract
A device for stopping rotation of a fixed blade bearing sector in a gas turbine casing. Sectors of synchronizing ring blades are maintained against tangential rotational movements by sliding into grooves of a casing by pins passing through perforations in an extension of the two parts. The pins are prevented from accidental removal either by a flexible lock ring or by a locking tab maintained between the two parts when they have been completely assembled.
Claims13
A device for stopping rotation of a blade sector of a guide vane in a casing of a gas turbine, comprising:
- a pair of drillings formed in line in the blade sector and the casing respectively;
- a pin that fits into the drillings;
- and
- means for holding the pin in the drillings,
- wherein the drillings are made through a rim of the blade sector and through a groove in the casing into which the rim is pushed in, and wherein the holding means comprises a lock ring inserted under the rim in the groove and occupying a recess intersecting the pin.
A device for stopping rotation of a blade sector of a guide vane in a casing of a gas turbine, comprising:
- a pair of drillings formed in line in the blade sector and the casing respectively;
- a pin that fits into the drillings;
- and
- means for holding the pin in the drillings,
- wherein the holding means comprises a locking tab projecting from the pin and that stops in contact with the blade sector on a first side, and the casing on a second side.
A device for stopping rotation of a blade sector of a guide vane in a casing of a gas turbine, comprising:
- a pair of drillings formed in line in the blade sector and the casing respectively;
- a pin that fits into the drillings;
- and
- a lock ring,
- wherein the drillings are made through a rim of the blade sector and through a groove in the casing into which the rim is pushed in, and wherein the lock ring is inserted under the rim in the groove and engages a recess intersecting the pin.
Dependencies are inferred from the claim text.