Cooling device for casing of turbine for turboshaft engine, has supply unit for directly providing part of air of power supply enclosure of low pressure module of turbine, in housing without allowing air to pass by cooling pipe

摘要

The device has a supply unit for directly providing a part of the air of an power supply enclosure of a low pressure module (16) of a turbine (10) of a turboshaft engine, in a housing without allowing the air to pass by a cooling pipe. The supply unit includes a set of openings crossing a casing (22) and another set of openings crossing a downstream edge of an external platform (38a) of a distributer of the module. The two sets of openings extend parallel to an axis (105) from the turbine. The former set of openings is distributed over the periphery of the casing.