Method for attaching a cover of a centrifugal compressor of the turbine engine, compressor assembly the compressor cover and such cover implementing the method is provided

摘要

An object of the present invention, the cover of the centrifugal compressor, a gap between the cover and the blade of the compressor impeller, is that it enables to move to remain substantially and as small as possible constant. To achieve the above object, the present invention provides an arrangement of the mounting portion in the center of the cover having a resiliently deformable portion. The cover, the mounting portion (8), has a blade impeller having a (20) (22) is provided compressor (12) a concave shell (50) having an inner surface (51) placed at a distance from. Mounting portion (8) has one connection end in the middle of the shell (50) and (83), another end attached to the casing (6) of the turbine engine (1) and (82). Arm mounting portion (8), when in the rest position, which is attached to the double elbow joint having a right angle and an obtuse angle (8c, 8d, 8e) end for attachment to the casing (6) by (82) comprising a profile axisymmetric diaphragm having a generally frustoconical shape with a (8b) (80). The distance between the shell (50) inner surface (51) and the blade upper edge (20) (21), in operation, may be held constant with minimal clearance adjustment.