INPUT DEVICE OF CENTRIFUGAL TURBINES Russian patent published in 2017 - IPC F04D29/44 

FIELD: machine engineering.

SUBSTANCE: invention applies to these input devices that contain consecutive on-the-go working environment radial oriented round adapter input section to the rectangular section, increase the width of the cross-section in the radial plane, an intermediate Chamber and radial-axial axisymmetric konfuzor, with adapter in the direction of progress working environment expanding in radial plane and narrows in the meridional section, and the camera are narrowed towards the working progress environment in a meridional plane with the same angle, the boundary between the camera and the section konfusor-cylindrical and convex meridional circumscription of konfusor rounded to its radius. Square boundary sections between adapter, section camera and konfusor are equal (1.1…0.9) to the square of the section input device. Radius of convex meridional konfusor outline is (4…1) width of its output. Taper angle adapter in the meridional plane is equal to the corner of the narrow sections, and the camera in the plane. Taper angle sections and Chambers in a meridional plane is determined by a formula which included four geometric parameter of device: edge square cross-section between the section and the camera, the width of this section in the radial plane width and edge diameter cross section between the camera and the konfusor.

EFFECT: invention reduces head loss in the device.

7 dwg