FIELD: energy industry.
SUBSTANCE: wind turbine blade with vertical axis of rotation, comprising a tip made in the form of the input part of the airfoil. The tip consists of two freely rotatable parts interconnected by the hinge with a vertical axis of rotation located at the extreme entry point of the tip. The tip of the blade is provided with a mechanism of fixed changing the distance between the free ends of the tip. The tip of the blade is made of flat plates connected by the hinge. The inner surfaces of the flat plates of the tip are provided with the trellis work of reinforcement ribs. The tip is provided with regulated springs inserted in the telescopic cylinders which are fastened by the hinges to the flat plates at one end and to the stopper located on the axis of symmetry of the tip in an expanded form, at the other end.
EFFECT: improvement of manufacturability of the blade, increase in its strength, rigidity and operating efficiency.
4 dwg
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