Device for the control of an air flow flowing in a rotor shaft of a turbine

摘要

The device has a deformable plate (16`) with a bilinear performance deformed under the effect of a centrifugal force due to the rotation of a rotating shaft (10`) of a turbo machine such that a closing valve (14`) is displaced between two positions based on the speed of rotation of the shaft. The valve closes an orifice (12`) in one position and opens the orifice in the other position to permit an air passage. Portions of a working part (16a`) of the plate situated on two sides of another portion are compression and traction controlled, when the plate is deformed due to the centrifugal force.