METHOD FOR MOUNTING SHIELDING ON A TURBINE CASING, AND MOUNTING ASSEMBLY FOR IMPLEMENTING SAME

摘要

The invention relates to negating the thermal inertia of a solid portion, such as shielding, which influences the mechanical behavior of the parts of the engine structure. In particular, the invention aims to reduce the forces transmitted to the engine structure during an event in which a turbine blade ruptures, while at the same time preserving the mechanical strength thereof and suitable vibratory positioning. To this end, the invention provides a flexible fastener for the shield, thereby enabling a fusible section to be produced. An exemplary assembly for mounting shielding (15) onto a casing (20) of the engine structure (30) of a turbine (10) according to the invention comprises connection lugs (70) and points (82, 92) for attachment to the casing (20) and to the shielding (15). The attachment points are sufficiently spaced apart in accordance with the curvature of the shielding (15) and casing (20) such that the connection between the lugs (70) and the shielding (15) or casing (20), as well as the connection to the attachment points (92, 82), are substantially tangential. The lugs (70) are sized such that the connection has a sufficient degree of flexibility in order to control the vibratory positioning thereof and to ensure a sufficient degree of mechanical strength under a thermomechanical loads.