DEVICE FOR DETECTION OF AERODYNAMIC PERFORMANCES OF COMPRESSOR GRATES

摘要

The invention relates to the sphere of aerodynamics of the axial-flow compressors and turbines, and can be used to determine the compressor grates aerodynamic performances. Device for determining the aerodynamic performances of compressor grates contains the set of variable-incidence blades inserted into the casing of the working part of aerodynamic tube between the vertical and horizontal walls, sealing plates, mechanism of rotation of the set of bleedings. The rotation axle of the set of the blades coincides with the end of the unmovable limiting horizontal wall of the working part of aerodynamic tube equipped with movable and unmovable horizontal walls. The movable wall is executed in form of rotating plate to provide rotation of the pack of variable-incidence blades. One end of the movable wall on the run of the flow is hinged jointly with the unmovable elements of the structure of aerodynamic tube, and the other end is placed between the two guide rollers of the rotating set. To reduce the air overflow each wall is spring-loaded in axial direction with sealing plates, placed in the front edges of the end blades of rotation pack. Technical result consists in increase of accuracy of the aerodynamic performances data and simplifying the device design.