WIND-DRIVEN POWERPLANT Russian patent published in 2008 - IPC F03D1/00 

FIELD: power engineering.

SUBSTANCE: invention is attributed to the field of wind-driven power engineering and can be used in wind engines with rotation axis coinciding with wind direction. The plant contains two identical blades connected with horizontal shaft of generator rotor via front and rear bearing assemblies located on supporting arch resting on its bearing assembly allowing the plant to rotate around its axis. Midlines of blades are shaped as a line resulting from intersecting of two quadric surfaces - sphere and saddle. Cross-section of blades has a shape of wing airfoil. Flow concentrator is attached on the outside to the middle of blades. Middle surface of this concentrator is made in the form of truncated cone with section of aerodynamic streamlined shape, at that smaller concentrator diameter is directed toward incoming wind flow. Additional confusor and diffuser are installed respectively outside and inside front bearing assembly of blades attachment. Front bearing assembly is made with hollow providing possibility for wind flow to pass inside volume swept by blades, at that, front and rear bearing assemblies of blades attachment are connected by additional shaft.

EFFECT: increase of plant efficiency factor, widening of usable range and range of operation without rotor deformation at high speeds.

1 dwg