WIND TURBINE BLADE SPANWISE BLOCK CONNECTION STRUCTURE

The present invention relates to the field of wind turbine blade technology, in particular to a spanwise segment connection structure for wind turbine blades, comprising: a first segment and a second segment provided along the length direction of the wind turbine blade, wherein at least one splicing surface, in form of a slope structure, is provided between the first and second segments; and a structural adhesive layer provided at the splicing surface for splicing and fixing the first and second segments; wherein the bonding length of the structural adhesive layer conforms to the inclination angle of the slope structure, and a biaxial fabric reinforcement layer is provided on the outer side of a skin interface of the splicing surface. The weight of the blade is reduced and the production cost is reduced through the bonding and fixing of the first and second segments. The splicing surface in form of the slope structure increases the bonding area and reduces the stress concentration on the splicing surface of the first and second segments. In addition, the biaxial reinforcing layer at the skin interface of the splicing surface ensures the uniformity of the force on the blade shell structure, thereby improving the stability of the overall structure of the blade.