| 摘要 |
FIELD: wind-driven power plants. SUBSTANCE: wind motor has shaft kinematically linked with electric generator, rotating blades with flaps secured on swivel bushes fitted on shaft, drive for rotating the blades kinematically linked with swivel bushes and blade turn control system connected with drive. Each blade is set at inclination in direction of rotation in plane of rotation of wind motor. Angle of inclination is formed by longitudinal axes of blade and bush and its magnitude ranges from 0.5 to 0.2 deg. Blades are made with twist relative to axis of twist brought in line with longitudinal axis of blade shifted from chord of section towards large curvature of blade profile. Leading edge of blade is located at distance of 0.2 to 0.25 of amount of chord of respective sections of blade relative to longitudinal axis of blade. Besides that, flap of blade has shear of end at angle of 0.5 to 2.0 deg relative to plane perpendicular to longitudinal axis of bush and shift of axis of twist may be constant along length of blade for all sections or varying monotonically changing along length of blade. This magnitude may be constant in absolute values and relative to present thickness of blade profile. Wind motor blade may be inclined relative to plane perpendicular to radius axis of blade due to inclined shear of bush end. EFFECT: enhanced efficiency due to operation in wide range of wind velocity, mainly towards low velocities; enhanced economical efficiency and reliability. 7 cl, 5 dwg |
