FIELD: power engineering.
SUBSTANCE: invention relates to a structural element of the tail end of a blade of a wind power plant. Structural element (19) of the tail end of blade (5) of the wind power plant passes from shank (7) of the blade to tail section (14) of blade shell (11) formed by a blade part having inner surface (21), outer surface (22) and a connecting edge for the connection of the blade. Moreover, structural element (19) contains fasteners (23) distributed along tail end (7) of the blade part in the circumferential direction. In this case, each fastener (23) has first inner surface (39), first outer surface (40) and first side surfaces (41a, 41b) facing in opposite directions, each of which passes in the longitudinal direction. Moreover, second pultrusion element (28') is located between outermost fastener (23a) and connecting edge (20a, 20b) for the connection of the blade and the blade part, and, optionally, first pultrusion element (27) is located between a pair of fasteners (23). In this case, each of pultrusion elements (27, 28), the first and the second one, has second inner surface (34), second outer surface (35) and second side surfaces (33a, 33b) facing in opposite directions, also passing in the longitudinal direction. Moreover, structural element (19) additionally contains several outer layers (44) of fibrous material, passing along outer surface (22), and several inner layers (29) of fibrous material, passing along inner surface (21). In this case, second pultrusion element (28') forms transition section (31) passing from one second side surface (33b) to another second side surface (33a). Moreover, the local thickness of transition section (31) gradually decreases to connecting edge (20a, 20b) for the connection of the blade and/or to another second side surface (33a).
EFFECT: reduction in the risk of creasing in an interface area for the connection of a blade, and improvement of the laying of fibrous material.
11 cl, 30 dwg
