centrifugal compressor cover, cap assembly and centrifugal compressor, and turbomachine including such an assembly

The present invention aims, in a reduced axial dimension, to allow free expansion of the casing of a centrifugal compressor cover in the radial direction when temperature rises in order to control the keeping of radial clearances in edge and axial clearances in the trailing edge. To do this, the invention provides a cover (30) wherein the junction (41) between the clip (4) and the casing (3) is formed between substantially the middle (I) of the envelope (3) and its trailing edge (BF), and wherein, when cold, the clip (4) has a substantially concave shape (43) elastically deformable in bending. This concave shape (43) is connected to the casing (3) by a wall (5) extending at the junction (41) with a convex shape (44), so that the clip (4) has, generally, a cross-sectional configuration in the form of "S" with a junction (41) located closer to the trailing edge (BF) of the envelope (3) that its leading edge (BA).