Patent ID: 8347601
Filing Date: 2013-01-08
Classification: F01D,F02C,F02K,F04D,F05D,Y02T

Abstract:
1. A device for pivoting at least one pivotable element in a gas turbine engine between a first and a second position in order to influence a gas flow in an annular gas duct in at least one of the positions, the device comprising a moveable annular member which is arranged externally around the gas duct and is connected to the pivotable element in order to effect the pivoting of the pivotable element, wherein the annular member is arranged to be displaced in a substantially axial direction and arranged to pivot the pivotable element when it is displaced axially, a linkage mechanism, the linkage mechanism connecting the annular member and a fixed part, the linkage mechanism supporting the annular member in relation to the fixed part and being arranged to control axial movement of the annular member, wherein the linkage mechanism comprises at least two parallel stabilizer bars, a first stabilizer bar being pivotably connected to the annular member at two separate positions in a circumferential direction of the device, and a second stabilizer bar being pivotably connected to the fixed part at two separate positions in the circumferential direction, and an actuator, which is connected to the annular member for displacement the annular member between a first and a second position in the axial direction, which positions correspond to the first and second position of the pivotable element, the actuator and the linkage mechanism being separate structures.